WO2021196309A1 - 双向能量传输装置、车载充电器及电动汽车 - Google Patents

双向能量传输装置、车载充电器及电动汽车 Download PDF

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Publication number
WO2021196309A1
WO2021196309A1 PCT/CN2020/085934 CN2020085934W WO2021196309A1 WO 2021196309 A1 WO2021196309 A1 WO 2021196309A1 CN 2020085934 W CN2020085934 W CN 2020085934W WO 2021196309 A1 WO2021196309 A1 WO 2021196309A1
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Prior art keywords
port
voltage
bridge
circuit
energy storage
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Ceased
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PCT/CN2020/085934
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English (en)
French (fr)
Inventor
代胜勇
托瑞克•巴斯科佩•格罗弗•维克多
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202080098741.1A priority Critical patent/CN115298922A/zh
Priority to EP20928152.6A priority patent/EP4120504A4/en
Publication of WO2021196309A1 publication Critical patent/WO2021196309A1/zh
Priority to US17/955,427 priority patent/US12434583B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/50Charging stations characterised by energy-storage or power-generation means
    • B60L53/57Charging stations without connection to power networks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/11DC charging controlled by the charging station, e.g. mode 4
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H02J7/04Regulation of charging current or voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of DC power input into DC power output
    • H02M3/22Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H02M3/33584Bidirectional converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/66Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal
    • H02M7/68Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters
    • H02M7/72Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/79Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/797Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00Converter types
    • B60L2210/10DC to DC converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/30Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles
    • H02J2105/33Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles
    • H02J2105/37Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Details of circuit arrangements for charging or discharging batteries or supplying loads from batteries
    • H02J2207/20Charging or discharging characterised by the power electronics converter
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/14Plug-in electric vehicles

Definitions

  • This application relates to the field of on-board charging, in particular to a two-way energy transmission device, on-board charger and electric vehicle.
  • V2V Vehicle-to-vehicle
  • V2L vehicle-to-load
  • V2G vehicle-to-grid
  • Fig. 1 Its working principle is as follows: three independent converters are adopted, and each independent converter includes power factor correction (PFC). and a DC-circuit current (direct current-direct current, DCDC ) circuit, three separate converter output port (i.e.
  • PFC power factor correction
  • DCDC DC-circuit current
  • the disadvantage of the circuit shown in Figure 1 is that the circuit is complicated, it uses too many power devices, the cost is high, the system is unstable, and only single-phase inverter can be realized when inverting, and the inverter output power is low.
  • the embodiments of the present application provide a two-way energy transmission device, an on-board charger, and an electric vehicle.
  • the embodiments of the present application realize the function of not only high-power charging, but also inverter.
  • an embodiment of the present application provides a bidirectional energy transmission device, including: a controller and a bidirectional energy transfer transmission circuit, wherein the control end of the controller is connected to the controlled end of the bidirectional energy transmission circuit;
  • the controller is used to control the bidirectional energy transmission circuit to be in a rectifying working state, so as to realize the conversion of the three-phase or single-phase AC voltage input from the first port of the bidirectional energy transmission circuit into the first direct current voltage, and the conversion of the bidirectional energy transmission circuit
  • the second port output or used to control the bidirectional energy transmission circuit to be in the inverter working state, so as to realize the conversion of the first DC voltage input from the second port of the bidirectional energy transmission circuit into three-phase or single-phase AC voltage, and from the two-way The first port output of the energy transmission circuit.
  • the controller realizes the two-way conversion of three-phase/single-phase AC voltage to DC voltage by controlling the two-way energy transmission circuit to be in different working states, and the configuration is flexible and changeable. Realize the function of not only high-power charging, but also inverter.
  • the rectification working state includes a first rectifying working state and a second rectifying working state
  • the controller controlling the bidirectional energy transmission circuit to be in the rectifying working state specifically includes:
  • the controller controls the bidirectional energy transmission circuit to be in the first rectification working state to realize the conversion of the three-phase AC voltage into the first DC voltage, and The second port output of the bidirectional energy transmission circuit;
  • the controller controls the bidirectional energy transmission circuit to be in the first rectification working state, so as to realize the conversion of the three-phase AC voltage into the first DC voltage, and The second port output of the bidirectional energy transmission circuit.
  • the inverter working state includes a first inverter working state and a second inverter working state
  • the controller controls the bidirectional energy transmission circuit to be in the inverter working state, which specifically includes:
  • the controller controls the bidirectional energy transmission circuit to be in the first inverter working state, so as to realize the second input from the second port of the bidirectional energy transmission circuit.
  • a DC voltage is converted into a three-phase AC voltage and output from the first port of the bidirectional energy transmission circuit;
  • the controller controls the bidirectional energy transmission circuit to be in the second inverter working state, so as to realize the first input from the second port of the bidirectional energy transmission circuit.
  • a DC voltage is converted into a single-phase AC voltage and output from the first port of the bidirectional energy transmission circuit.
  • detecting whether the input or output of the first port of the bidirectional energy transmission circuit is three-phase AC voltage or single-phase AC voltage can be detected by detecting the type of connector connected to the first port of the bidirectional energy transmission circuit; When it is a four-hole connector, make sure that the input or output of the first port of the bidirectional energy transmission circuit is three-phase AC voltage; when the connector type is a two-hole connector, make sure that the input or output of the first port of the bidirectional energy transmission circuit is single-phase Phase AC voltage.
  • the bidirectional energy transmission circuit includes a bidirectional conversion circuit and a direct current to direct current (DCDC) circuit, wherein the second port of the bidirectional conversion circuit is connected to the first port of the DCDC circuit, and the bidirectional transmission circuit is controlled
  • the terminal includes the controlled terminal of the bidirectional conversion circuit and the controlled terminal of the DCDC circuit; the controller controls the bidirectional energy transmission circuit to be in the first rectification state, which specifically includes:
  • the controller controls the bidirectional conversion circuit to be in the first working state, so as to convert the three-phase AC voltage input from the first port of the bidirectional conversion circuit into a second DC voltage, and output from the second port of the bidirectional conversion circuit; and control DCDC The circuit is in the second working state, so as to realize the conversion of the second direct current voltage input from the first port of the DCDC circuit into the first direct current voltage and output from the second port of the DCDC circuit;
  • the controller controls the bidirectional energy transmission circuit to be in the second rectification state, which specifically includes:
  • the controller controls the bidirectional conversion circuit to be in the third working state, so as to convert the single-phase AC voltage input from the first port of the bidirectional conversion circuit into a second DC voltage and output from the second port of the bidirectional conversion circuit; and control DCDC The circuit is in the second working state to convert the second direct current voltage input from the first port of the DCDC circuit into a first direct current voltage and output it from the second port of the DCDC circuit; wherein the first direct current voltage and the second direct current voltage The voltage is the same or different.
  • the controller controlling the bidirectional energy transmission circuit to be in the first inverter state includes:
  • the controller controls the DCDC circuit to be in the fourth working state to realize the conversion of the first voltage input from the second port of the DCDC circuit to the second DC voltage and output from the first port of the DCDC circuit; and controls the bidirectional conversion circuit to be in A fifth working state to convert the second DC voltage input from the second port of the bidirectional conversion circuit into a three-phase AC voltage and output from the first port of the bidirectional conversion circuit;
  • the controller controls the bidirectional energy transmission circuit to be in the second inverter state, which specifically includes:
  • the controller controls the DCDC circuit to be in the fourth working state to realize the conversion of the first voltage input from the second port of the DCDC circuit to the second direct current voltage and output from the first port of the DCDC circuit; and controls the bidirectional conversion circuit to be in the second Six working states to realize the conversion of the second DC voltage input from the second port of the bidirectional conversion circuit into a single-phase AC voltage and output from the first port of the bidirectional conversion circuit.
  • the two-way conversion circuit includes an energy storage/filter circuit, a switch network, and an energy storage circuit, wherein the first port of the energy storage/filter circuit is the first port of the two-way conversion circuit, and the energy storage/filter circuit
  • the second port of the switch network is connected to the first port of the switch network
  • the third port of the energy storage/filter circuit is connected to the first port of the energy storage circuit
  • the second port of the switch network is connected to the first port of the energy storage circuit.
  • the second port of the circuit is the second port of the bidirectional conversion circuit; the controlled end of the bidirectional conversion circuit includes the controlled end of the energy storage/filter circuit and the controlled end of the switch network,
  • the DCDC circuit includes a first electric bridge, a second electric bridge, a third electric bridge, a fourth electric bridge, a first resonant network, a second resonant network and an energy storage device,
  • the first port of the DCDC circuit includes the first port of the first bridge and the first port of the third bridge, the second port of the first bridge is connected to the first port of the first resonant network, and the first resonant network
  • the second port of the second electrical bridge is connected to the first port
  • the second port of the third electrical bridge is connected to the first port of the second resonant network
  • the second port of the second resonant network is connected to the fourth electrical bridge.
  • the second port of the electric bridge, the second port of the second electric bridge and the second port of the fourth electric bridge are all connected to the first port of the energy storage device, and the second port of the DCDC circuit is the second port of the energy storage device;
  • the controlled end of the DCDC circuit includes the controlled end of the first bridge, the controlled end of the second bridge, the controlled end of the third bridge, and the controlled end of the fourth bridge.
  • the controller controlling the bidirectional conversion circuit to be in the first working state specifically includes:
  • the controller controls the energy storage/filter circuit and the switch network to be in the first state st1 to achieve:
  • the energy storage/filter circuit stores energy for the three-phase AC voltage input from its first port, and outputs a DC voltage from its second port; the switching network performs power conversion on the DC voltage input from its first port, and from its The second port outputs the converted DC voltage; the energy storage network stores energy from the DC voltage input from the first port, and outputs the second DC voltage from the second port.
  • the controller controls the bidirectional conversion circuit to be in the third working state, which specifically includes:
  • the controller controls the energy storage/filter circuit and the switch network to be in the third state st3 to achieve:
  • the energy storage/filter circuit stores energy for the single-phase AC voltage input from its first port, and outputs a DC voltage from its second port; the switching network performs power conversion on the DC voltage input from its first port, and from its The second port outputs the converted DC voltage; the energy storage network stores energy from the DC voltage input from the first port, and outputs the second DC voltage from the second port.
  • the controller controls the bidirectional conversion circuit to be in the fifth working state, which specifically includes:
  • the controller controls the energy storage/filter circuit and the switch network to be in the fifth state st5 to achieve:
  • the energy storage network stores energy for the DC voltage input from its second port and outputs the DC voltage from its first port; the switching network performs power conversion on the DC voltage input from its second port and outputs it from its first port The converted DC voltage; the energy storage/filter circuit filters the DC voltage input from its second port, and outputs a three-phase AC voltage from its first port.
  • the controller controls the bidirectional conversion circuit to be in the sixth working state, which specifically includes:
  • the controller controls the energy storage/filter circuit and the switch network to be in the sixth state st6 to achieve:
  • the energy storage network stores energy for the DC voltage input from its second port and outputs the DC voltage from its first port; the switching network performs power conversion on the DC voltage input from its second port and outputs it from its first port The converted DC voltage; the energy storage/filter circuit filters the DC voltage input from its second port, and outputs a single-phase AC voltage from its first port.
  • the controller controlling the DCDC circuit to be in the second working state specifically includes:
  • the controller controls the first bridge, the second bridge, the third bridge, and the fourth bridge to be in the second state st2 to achieve:
  • the first electric bridge is used for power conversion of the DC voltage input from the first port of the electric bridge, and the DC voltage after the power conversion is output from the second port of the electric bridge;
  • the first resonance network is used for inputting The DC voltage is converted into power, and the converted DC voltage is output;
  • the second bridge is used to rectify the DC voltage input from the first port of the bridge, and output the rectified DC voltage from the second port of the bridge ⁇ DC voltage;
  • the third electric bridge is used for power conversion of the DC voltage input from the first port of the electric bridge, and the DC voltage after the power conversion is output from the second port of the electric bridge;
  • the second resonance network is used for inputting The DC voltage is converted into power and the converted DC voltage is output;
  • the fourth bridge is used to rectify the DC voltage input from the first port of the bridge, and output the rectified DC voltage from the second port of the bridge ⁇ DC voltage;
  • the second DC voltage is the DC voltage input from the first port of the first bridge, or the DC voltage input from the first port of the third bridge, or the DC voltage input from the first port of the first bridge The sum of the DC voltage and the DC voltage input from the first port of the third bridge;
  • the first DC voltage is the DC voltage output from the second port of the second bridge, or the DC voltage output from the second port of the fourth bridge, or the DC voltage output from the second port of the second bridge And the sum of the DC voltage output from the second port of the fourth bridge.
  • the controller controls the DCDC circuit to be in the fourth working state, which specifically includes:
  • the controller controls the first bridge, the second bridge, the third bridge, and the fourth bridge to be in the fourth state st4 to achieve:
  • the second electric bridge is used for power conversion of the DC voltage input from the second port of the electric bridge, and the converted DC voltage is output from the first port of the electric bridge;
  • the first resonance network is used for inputting The DC voltage is converted into power, and the converted DC voltage is output;
  • the first bridge is used to rectify the DC voltage input from the second port of the bridge, and output the rectified DC voltage from the first port of the bridge ⁇ DC voltage;
  • the fourth bridge is used for power conversion of the DC voltage input from the second port of the bridge, and the converted DC voltage is output from the first port of the bridge;
  • the second resonance network is used for power conversion The input DC voltage is converted into power, and the converted DC voltage is output;
  • the third bridge is used to rectify the DC voltage input from the second port of the bridge, and output the rectification from the first port of the bridge After the DC voltage;
  • the second DC voltage is the DC voltage output from the first port of the first bridge, or the DC voltage output from the first port of the third bridge, or the DC voltage output from the first port of the first bridge The sum of the DC voltage and the DC voltage output from the first port of the third bridge;
  • the first DC voltage is the DC voltage input from the second port of the second bridge, or the DC voltage input from the second port of the fourth bridge, or the DC voltage input from the second port of the second bridge And the sum of the DC voltage input from the second port of the fourth bridge.
  • the first port of the bidirectional energy transmission circuit includes an A-phase terminal, a B-phase terminal, a C-phase terminal, and an N-phase terminal;
  • the three-phase AC voltage is input or output from the first port of the bidirectional energy transmission circuit
  • the three-phase AC voltage is input or output from the A-phase, B-phase, C-phase and N-phase terminals of the bidirectional energy transmission circuit
  • the input or output from the first port of the bidirectional energy transmission circuit is a single-phase AC voltage
  • the single-phase AC voltage is input or output from the A-phase terminal and the N-phase terminal of the bidirectional energy transmission circuit.
  • the energy storage/filter circuit is composed of a capacitor C1, a capacitor C2, a capacitor C3, an inductor L1, an inductor L2, an inductor L3, a switch tube S1, and a switch tube S2;
  • the first end of the inductor L1 is connected to the first end of the switching tube S2 through the capacitor C1
  • the first end of the inductor L2 is connected to the first end of the switching tube S2 through the parallel capacitor C2 and the switching tube S1
  • the first end of the capacitor C2 and the first end of the capacitor L3 is connected to the first end of the switch tube S2 through the capacitor C3.
  • the first end of the inductor L1, the first end of the inductor L2, and the first end of the inductor L3 are respectively A Phase end, B-phase end and C-phase end, the first end of the switch tube S2 is the N-phase end;
  • the second end of the inductor L1, the second end of the inductor L2 and the second end of the inductor L3 constitute energy storage /
  • the second port of the filter circuit, the second end of the switch tube S2 is the third port of the energy storage/filter circuit;
  • the controlled terminal of the energy storage/filter circuit includes the controlled terminal of the switch tube S1 and the controlled terminal of the switch tube S2.
  • the switch network consists of MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, MOS transistors Q4, MOS transistors Q5, MOS transistors Q6, switch transistors S3, switch transistors S4, and switch transistors S5,
  • the drain of the MOS transistor Q1 and the drain of the MOS transistor Q3 are both connected to the drain of the MOS transistor Q5, the source of the MOS transistor Q1 is connected to the drain of the MOS transistor Q2, and the source of the MOS transistor Q2 is connected to the MOS transistor.
  • the drain of Q4, the source of MOS transistor Q5 is connected to the drain of MOS transistor Q6, the source of MOS transistor Q2 and the source of MOS transistor Q4 are both connected to the source of MOS transistor Q6, and the first end of switch S3
  • the part is connected between the source of the MOS transistor Q1 and the drain of the MOS transistor Q2, the first end of the switch S4 is connected between the source of the MOS transistor Q3 and the drain of the MOS transistor Q4, and the first end of the switch S5
  • One end is connected between the source of MOS transistor Q5 and the drain of MOS transistor Q6.
  • the source of MOS transistor Q1, the source of MOS transistor Q3 and the source of MOS transistor Q5 constitute the first port of the switching network.
  • the drain of the tube Q5, the source of the MOS tube Q6, the second end of the switching tube S3, the second end of the switching tube S4, and the second end of the switching tube S5 constitute the second port of the switching network;
  • the controlled end of the switch network includes the gate of MOS transistor Q1, the gate of MOS transistor Q2, the gate of MOS transistor Q3, the gate of MOS transistor Q4, the gate of MOS transistor Q5, and the gate of MOS transistor Q6. , The controlled end of the switch tube S3, the controlled end of the switch tube S4, and the controlled end of the switch tube S5.
  • the tank circuit is composed of a capacitor C9 and a capacitor C10, wherein the second end of the capacitor C9 is connected to the first end of the capacitor C10;
  • the second port of the energy storage/filter circuit connected to the first port of the switching network specifically includes: the second end of the inductor L1 is connected between the source of the MOS transistor Q1 and the drain of the MOS transistor Q2, and the second end of the inductor L2 The end is connected between the source of the MOS transistor Q3 and the drain of the MOS transistor Q4, and the second end of the inductor L3 is connected between the source of the MOS transistor Q5 and the drain of the MOS transistor Q6;
  • the second port of the switch network connected to the first port of the tank circuit specifically includes: the drain of the MOS transistor Q5 is connected to the first end of the capacitor C9, the source of the MOS transistor Q6 is connected to the second end of the capacitor C10, The second end of the switching tube S3, the second end of the switching tube S4, and the second end of the switching tube S5 are all connected between the first end of the capacitor C9 and the second end of the capacitor C10;
  • Connecting the third port of the energy storage/filter circuit to the first port of the energy storage circuit specifically includes: the second end of the switch tube S2 is connected between the second end of the capacitor C9 and the first end of the capacitor C10.
  • each of the first bridge, the second bridge, the third bridge, and the fourth bridge is composed of a first MOS tube, a second MOS tube, a third MOS tube, and a first MOS tube.
  • the drain of the third MOS transistor is connected to the drain of the first MOS transistor, the source of the first MOS transistor is connected to the drain of the second MOS transistor, and the source of the third MOS transistor is connected To the drain of the second MOS tube, the source of the fourth MOS tube is connected to the source of the second MOS tube;
  • Each of the first resonant network and the second resonant network is composed of a first capacitor, a first inductor, a transformer, a second inductor, and a second capacitor,
  • the second end of the first capacitor is connected to the end of the transformer primary coil with the same name through the first inductance, and the end of the transformer secondary coil is connected to the first end of the second capacitor through the second inductance.
  • the controlled end of each of the first bridge, the second bridge, the third bridge, and the fourth bridge includes the gate of the first MOS transistor, the gate of the second MOS transistor, and the third The gate of the MOS tube and the gate of the fourth MOS tube.
  • the second port of the first electrical bridge is connected to the first port of the first resonant network, which specifically includes: the first end of the first capacitor of the first resonant network is connected to the first electrical bridge Between the source of the third MOS and the drain of the fourth MOS, and the synonymous end of the primary coil of the transformer of the first resonant network to the source of the first MOS and the drain of the second MOS in the first bridge Between poles
  • the second port of the first resonant network connected to the first port of the second bridge specifically includes: the second end of the second capacitor of the first resonant network is connected to the source of the first MOS in the second bridge and the second Between the drain of the MOS transistor, and between the synonymous end of the secondary coil of the transformer of the first resonant network and the source of the third MOS and the drain of the fourth MOS in the second bridge;
  • the second port of the third bridge connected to the first port of the second resonant network specifically includes: the first end of the first capacitor of the second resonant network is connected to the source of the third MOS in the third bridge and the fourth Between the drain of the MOS transistor, and between the synonymous end of the primary coil of the transformer of the second resonant network to the source of the first MOS and the drain of the second MOS in the third bridge;
  • the second port of the second resonant network connected to the first port of the fourth bridge specifically includes: the second end of the second capacitor of the second resonant network is connected to the source of the first MOS in the fourth bridge and the second Between the drains of the MOS transistors, and between the synonymous end of the secondary coil of the transformer of the second resonant network to the source of the third MOS and the drain of the fourth MOS in the fourth bridge.
  • the second port of the bidirectional conversion circuit is connected to the first port of the DCDC circuit, which specifically includes:
  • the drain of the first MOS transistor in the first bridge is connected to the first end of the capacitor C9, the source of the second MOS transistor in the first bridge and the drain of the first MOS transistor in the third bridge are both connected Between the second end of the capacitor C9 and the first end of the capacitor C10, the source of the second MOS transistor of the second bridge is connected to the second end of the capacitor C10.
  • the controller controls the energy storage/filter circuit and the switch network to be in the first state st1, which specifically includes:
  • the controller controls the switching tube S1, the switching tube S2 in the energy storage/filtering circuit and the MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, MOS tube Q5, MOS tube Q6, and switching tube S3 in the switching network.
  • the switching tube S4 and the switching tube S5 are respectively disconnected and turned on according to the corresponding first preset rule, so as to realize:
  • the energy storage/filter circuit stores energy for the three-phase AC voltage input from its first port, and outputs a DC voltage from its second port; the switching network performs power conversion on the DC voltage input from its first port, and from its The second port outputs the converted DC voltage; the energy storage network stores energy from the DC voltage input from the first port, and outputs the second DC voltage from the second port.
  • the controller controls the energy storage/filter circuit and the switch network to be in the fifth state st5, which specifically includes:
  • the controller controls the switching tube S1, the switching tube S2 in the energy storage/filtering circuit and the MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, MOS tube Q5, MOS tube Q6, and switching tube S3 in the switching network.
  • the switching tube S4 and the switching tube S5 are disconnected and turned on respectively according to the corresponding second preset rule, so as to realize:
  • the energy storage network stores energy for the DC voltage input from its second port and outputs the DC voltage from its first port; the switching network performs power conversion on the DC voltage input from its second port and outputs it from its first port The converted DC voltage; the energy storage/filter circuit filters the input from its second port and outputs a three-phase AC voltage from its first port.
  • the controller controls the energy storage/filter circuit and the switch network to be in the third state st3, which specifically includes:
  • the controller controls the switching tube S1 in the energy storage/filtering circuit to close and the switching tube S2 to open, and the switching tube S5 in the switching network to open, the MOS tube Q5 to open and the MOS tube Q6 to open, and to control the MOS tube in the switching network Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, switching tube S3, and switching tube SS4 are respectively turned off and turned on according to the corresponding third preset rule to realize:
  • the energy storage/filter circuit stores energy for the single-phase AC voltage input from its first port, and outputs a DC voltage from its second port; the switching network performs power conversion on the DC voltage input from its first port, and from its The second port outputs the converted DC voltage; the energy storage network stores energy from the DC voltage input from the first port, and outputs the second DC voltage from the second port.
  • the controller controls the energy storage/filter circuit and the switch network to be in the sixth state st6, which specifically includes:
  • the controller controls the switching tube S1 in the energy storage/filtering circuit to close and the switching tube S2 to open, and the switching tube S3, the switching tube S4 and the switching tube S5 in the switching network are all disconnected, and the MOS tube Q5 is opened and the MOS tube Q6 is opened. , And control the MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, switching tube S3, and switching tube SS4 in the switching network to be turned off and turned on according to the corresponding fourth preset rule, so as to realize:
  • the energy storage network stores energy from the DC voltage input from its second port, and outputs the DC voltage from the first port of the energy storage circuit; the switching network performs power conversion on the DC voltage input from its second port, and then The first port outputs the converted DC voltage; the energy storage/filter circuit filters the voltage input from the second port, and outputs a single-phase AC voltage from the first port.
  • the controller controls the energy storage/filter circuit and the switch network to be in the third state st3, which specifically includes:
  • the controller controls the switching tube S1 in the energy storage/filtering circuit to close and the switching tube S2 to open, and the switching tube S3, the switching tube S4 and the switching tube S5 in the switching network are all disconnected, and the MOS tube Q5 is opened and the MOS tube Q6 is opened.
  • the energy storage/filter circuit stores energy for the single-phase AC voltage input from the first port of the energy storage/filter circuit, and outputs the DC voltage from the second port of the energy storage/filter circuit;
  • the DC voltage input from the port performs power conversion, and the converted DC voltage is output from the second port of the switch network;
  • the energy storage network stores energy from the DC voltage input from the first port of the energy storage network, and receives energy from the energy storage circuit The second port of the output second DC voltage.
  • the controller controls the energy storage/filter circuit and the switch network to be in the sixth state st6, which specifically includes:
  • the controller controls the switching tube S1 in the energy storage/filtering circuit to open and the switching tube S2 to close, and the switching tube S3, the switching tube S4 and the switching tube S5 in the switching network are all disconnected, the MOS tube Q3, the MOS tube Q4, and the MOS tube.
  • the transistor Q5 and the MOS transistor Q6 are both open, and the MOS transistor Q1 and the MOS transistor Q2 in the switching network are controlled to be turned off and turned on respectively according to the corresponding sixth preset rule to achieve:
  • the energy storage network stores energy for the DC voltage input from the second port of the energy storage network, and outputs the DC voltage from the first port of the energy storage circuit;
  • the switching network performs power on the DC voltage input from the second port of the switching network And output the converted DC voltage from the first port of the switch network;
  • the energy storage/filter circuit filters the voltage input from the second port of the energy storage/filter circuit, and from the first port of the energy storage/filter circuit Output single-phase AC voltage.
  • the controller controls the first bridge, the second bridge, the third bridge, and the fourth bridge to be in the second state st2, which specifically includes:
  • the controller controls the MOS transistors in the first bridge, the second bridge, the third bridge, and the fourth bridge to be disconnected and turned on according to the seventh preset rule to achieve:
  • the first electric bridge and the third electric bridge are used to perform power conversion on the DC voltage input from the first port of the electric bridge, and output the power-converted DC voltage from the second port of the electric bridge; a first resonance network And the second resonant network, used for power conversion of the input DC voltage, and output the converted DC voltage; the second bridge and the fourth bridge, used for the DC voltage input from the first port of the bridge Perform rectification, and output the rectified DC voltage from the second port of the bridge.
  • the controller controls the first bridge, the second bridge, the third bridge, and the fourth bridge to be in the fourth state st4, which specifically includes:
  • the controller controls the MOS transistors in the first bridge, the second bridge, the third bridge, and the fourth bridge to be disconnected and turned on according to the eighth preset rule to achieve:
  • the second electric bridge and the fourth electric bridge are used for power conversion of the DC voltage input from the second port of the electric bridge, and output the converted DC voltage from the first port of the electric bridge; a first resonance network And the second resonant network, used for power conversion of the input DC voltage, and output the converted DC voltage; the first bridge and the third bridge, used for the DC voltage input from the second port of the bridge Perform rectification, and output the rectified DC voltage from the first port of the bridge.
  • the controller controls the first bridge, the second bridge, the third bridge, and the fourth bridge to be in the second state st2, which specifically includes:
  • the controller controls the short circuit of the MOS transistors in the third bridge and the open circuit of the MOS transistors in the fourth bridge, and controls the MOS transistors in the first bridge and the second bridge to disconnect and conduct according to the ninth preset rule, To achieve:
  • the first electric bridge is used for power conversion of the DC voltage input from the first port of the electric bridge, and the DC voltage after the power conversion is output from the second port of the electric bridge;
  • the first resonance network is used for inputting The DC voltage is converted into power, and the converted DC voltage is output;
  • the second bridge is used to rectify the DC voltage input from the first port of the bridge, and output the rectified DC voltage from the second port of the bridge ⁇ DC voltage;
  • the controller controls the first electric bridge, the second electric bridge, the third electric bridge and the fourth electric bridge to be in the fourth state st4, which specifically includes:
  • the controller controls the MOS transistors in the third bridge to be short-circuited and the MOS transistors in the fourth bridge to be open, and controls the MOS transistors in the first bridge and the second bridge to disconnect and conduct according to the tenth preset rule.
  • the second electric bridge is used for power conversion of the DC voltage input from the second port of the electric bridge, and the converted DC voltage is output from the first port of the electric bridge;
  • the first resonance network is used for inputting The DC voltage is converted into power, and the converted DC voltage is output;
  • the first bridge is used to rectify the DC voltage input from the second port of the bridge, and output the rectified DC voltage from the first port of the bridge DC voltage.
  • the controller controls the first bridge, the second bridge, the third bridge, and the fourth bridge to be in the second state st2, which specifically includes:
  • the controller controls the short-circuit of the MOS transistors in the first bridge and the open-circuit of the MOS transistors in the second bridge, and controls the MOS transistors in the third and fourth bridges to disconnect and conduct according to the eleventh preset rule To achieve:
  • the third electric bridge is used for power conversion of the DC voltage input from the first port of the electric bridge, and the DC voltage after the power conversion is output from the second port of the electric bridge;
  • the second resonance network is used for inputting The DC voltage is converted into power and the converted DC voltage is output;
  • the fourth bridge is used to rectify the DC voltage input from the first port of the bridge, and output the rectified DC voltage from the second port of the bridge ⁇ DC voltage;
  • the controller controls the first electric bridge, the second electric bridge, the third electric bridge and the fourth electric bridge to be in the fourth state st4, which specifically includes:
  • the controller controls the MOS transistors in the first bridge to be short-circuited and the MOS transistors in the second bridge to be open, and controls the MOS transistors in the third and fourth bridges to open and disconnect according to the twelfth preset rule.
  • the fourth electric bridge is used for power conversion of the DC voltage input from the second port of the electric bridge, and the converted DC voltage is output from the first port of the electric bridge;
  • the second resonance network is used for inputting The DC voltage is converted into power and the converted DC voltage is output;
  • the third bridge is used to rectify the DC voltage input from the second port of the bridge, and output the rectified DC voltage from the first port of the bridge DC voltage.
  • an embodiment of the present application provides a vehicle-mounted charger, including the bidirectional energy transmission device as described in the first aspect.
  • an embodiment of the present application provides an electric vehicle, including the two-way energy transmission device as described in the first aspect or the on-board charger as described in the second aspect.
  • FIG. 1 is a schematic diagram of an energy transmission circuit in the prior art
  • FIG. 2 is a schematic diagram of an application scenario of a bidirectional energy transmission device provided by an embodiment of the application
  • Fig. 3a is a schematic structural diagram of a bidirectional energy transmission device provided by an embodiment of the application.
  • 3b is a schematic structural diagram of another bidirectional energy transmission device provided by an embodiment of the application.
  • 4a is a schematic structural diagram of a bidirectional conversion circuit provided by an embodiment of this application.
  • 4b is a schematic structural diagram of an inverse DCDC circuit provided by an embodiment of the application.
  • FIG. 5a is a schematic diagram of a specific structure of a bidirectional energy transmission circuit provided by an embodiment of the application.
  • 5b is a schematic diagram of input and output ports of an energy storage device provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of a specific structure of another bidirectional energy transmission circuit provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of a specific structure of another bidirectional energy transmission circuit provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of a specific structure of another bidirectional energy transmission circuit provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of a specific structure of another bidirectional energy transmission circuit provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram of a specific structure of another bidirectional energy transmission circuit provided by an embodiment of the application.
  • FIG. 11 is a schematic diagram of a specific structure of another bidirectional energy transmission circuit provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the application.
  • the application scenario includes a first electric vehicle 200, a charging pile 201, a second electric vehicle 202, and electrical appliances 203.
  • the first electric vehicle 200 and the second electric vehicle 202 include a two-way energy transmission device, which is used to convert a three-phase AC voltage or a single-phase AC voltage into a DC voltage, or a DC voltage into a three-phase AC voltage. Voltage or single-phase AC voltage.
  • the charging pile 201 may be a three-phase alternating current charging pile or a single-phase alternating current charging pile.
  • the three-phase alternating current voltage of the three-phase alternating current charging pile or the single-phase alternating voltage of the single-phase alternating current charging pile can be transferred through the aforementioned two-way energy transmission device. It is converted into a direct current voltage, so that the first electric vehicle 200 can be charged.
  • the DC voltage of the battery in the first electric vehicle 200 can be converted into three-phase AC through the two-way energy transmission device in the first electric vehicle 200
  • the three-phase AC voltage or the single-phase AC voltage is converted into a DC voltage through the two-way energy transmission device in the second electric vehicle 202, so as to realize the charging of the second electric vehicle 202.
  • the first electric vehicle 200 is a RV.
  • an electrical appliance 203 such as an electric rice cooker.
  • the voltage is converted into a single-phase AC voltage, thereby realizing power supply for the consumer.
  • the above-mentioned first electric vehicle 200 or second electric vehicle 202 may be a pure electric vehicle, or a hybrid electric vehicle of electricity + other energy sources.
  • FIG. 3a is a schematic diagram of a bidirectional energy transmission device provided by an embodiment of the application.
  • the bidirectional energy transmission device 30 includes a bidirectional energy transmission circuit 300 and a controller 303, wherein the control terminal 303a of the controller 303 is connected to the controlled terminal 300c of the bidirectional energy transmission circuit 300.
  • the controller 303 is used to control the bidirectional energy transmission circuit 300 to be in a rectifying working state, so as to realize the conversion of the three-phase or single-phase AC voltage input from the first port 300a of the bidirectional energy transmission circuit 300 into the first DC voltage, and convert the bidirectional energy from the three-phase or single-phase AC voltage
  • the second port 300b of the transmission circuit 300 outputs, or is used to control the bidirectional energy transmission circuit 300 to be in an inverter working state, so as to realize the conversion of the first DC voltage input from the second port 300b of the bidirectional energy transmission circuit 300 into three-phase or
  • the single-phase AC voltage is output from the first port 300a of the bidirectional energy transmission circuit.
  • the rectifying working state includes a first rectifying working state and a second rectifying working state
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the rectifying working state, which specifically includes:
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the first rectifying working state, so as to realize the conversion of the three-phase AC voltage into the first DC voltage. Voltage and output from the second port 300b of the bidirectional energy transmission circuit 300;
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the first rectification working state, so as to realize the conversion of the three-phase AC voltage into the first direct current
  • the voltage is output from the second port 300b of the bidirectional energy transmission circuit 300.
  • the inverter working state includes a first inverter working state and a second inverter working state
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the inverter working state, which specifically includes:
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the first inverter working state, so as to realize the second operation from the bidirectional energy transmission circuit 300.
  • the first DC voltage input from the two ports 300b is converted into a three-phase AC voltage and output from the first port 300a of the bidirectional energy transmission circuit 300;
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the second inverter working state, so as to realize the second inverter operation from the bidirectional energy transmission circuit 300.
  • the first DC voltage input from the two ports 300b is converted into a single-phase AC voltage and output from the first port 300a of the bidirectional energy transmission circuit 300.
  • detecting whether the input or output of the first port 300a of the bidirectional energy transmission circuit 300 is a three-phase AC voltage or a single-phase AC voltage can be detected by detecting the type of connector connected to the first port 300a of the bidirectional energy transmission circuit 300 ;
  • the connector type is a four-hole connector, determine that the first port 300a of the bidirectional energy transmission circuit 300 inputs or outputs a three-phase AC voltage;
  • the connector type is a two-hole connector, determine the first port of the bidirectional energy transmission circuit 300
  • the input or output of 300a is single-phase AC voltage.
  • the bidirectional energy transmission circuit 300 includes a bidirectional conversion circuit 301 and a DCDC circuit 302, wherein the second port 301b of the bidirectional conversion circuit 301 is connected to the first port 302a of the DCDC circuit, and the control terminal 303a of the controller 303 is connected to
  • the connection of the controlled terminal 300c of the bidirectional energy transmission circuit 300 specifically includes: the control terminal 303b of the controller 303 is connected with the controlled terminal 301c of the bidirectional conversion circuit 301 and the controlled terminal 302c of the DCDC circuit 302.
  • the controller controls the bidirectional energy transmission circuit to be in the first rectification state, which specifically includes:
  • the controller 303 controls the bidirectional conversion circuit 301 to be in the first working state, so as to convert the three-phase AC voltage input from the first port 301a of the bidirectional conversion circuit 301 into the second DC voltage, and from the second port of the bidirectional conversion circuit 301 301b outputs and controls the DCDC circuit 302 to be in the second working state to realize the conversion of the second direct current voltage input from the first port 302a of the DCDC circuit 302 into the first direct current voltage, and from the second port 302b of the DCDC circuit 302 Output
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the second rectification state, which specifically includes:
  • the controller 303 controls the bidirectional conversion circuit 301 to be in the third working state, so as to realize the conversion of the single-phase AC voltage input from the first port 301a of the bidirectional conversion circuit 301 into the second DC voltage, and from the second port of the bidirectional conversion circuit 301 301b output; and control the DCDC circuit 302 to be in the second working state to realize the conversion of the second DC voltage input from the first port 302a of the DCDC circuit 302 into the first DC voltage, and output from the second port 302b of the DCDC circuit 302 ; Wherein, the voltage value of the first DC voltage and the voltage value of the second DC voltage are different or the same.
  • the controller 303 controls the bidirectional energy transmission circuit 300 to be in the first inverter state, which specifically includes:
  • the controller 303 controls the DCDC circuit 302 to be in the fourth working state, so as to realize the conversion of the first voltage input from the second port 302b of the DCDC circuit 302 into the second direct current voltage, and output from the first port 302a of the DCDC circuit 302; And control the bidirectional conversion circuit 301 to be in the fifth working state, so as to realize the conversion of the second DC voltage input from the second port 301b of the bidirectional conversion circuit 301 into a three-phase AC voltage, and output from the first port 301a of the bidirectional conversion circuit 301 ;
  • the controller 303 controls the bidirectional energy transmission circuit to be in the second inverter state, which specifically includes:
  • the controller 303 controls the DCDC circuit 302 to be in the fourth working state, so as to realize the conversion of the first voltage input from the second port 302b of the DCDC circuit 302 into the second direct current voltage and output from the first port 302a of the DCDC circuit 302; and
  • the bidirectional conversion circuit 301 is controlled to be in the sixth working state to realize the conversion of the second DC voltage input from the second port 301b of the bidirectional conversion circuit 301 into a single-phase AC voltage and output from the first port 301a of the bidirectional conversion circuit 301.
  • the DCDC circuit 302 functions as an isolation.
  • the process of inputting three-phase AC voltage or single-phase AC voltage from the first port 301a of the bidirectional conversion circuit 301 and outputting the DC voltage from the second port 302b of the DCDC circuit 302 is called forward energy transmission.
  • Process or rectification process the process of inputting the DC voltage from the second port 302b of the DCDC circuit 302 and outputting the three-phase AC voltage or the single-phase AC voltage from the first port 301a of the bidirectional conversion circuit 301 is called the energy reverse transmission process or reverse Change process.
  • the bidirectional conversion circuit 301 when the three-phase AC voltage or the single-phase AC voltage is input from the first port 301a of the bidirectional conversion circuit 301 and the DC voltage is output from the second port 301b of the bidirectional conversion circuit 301, the bidirectional conversion circuit 301 can be regarded as a PFC circuit , The circuit is used to convert AC voltage to DC voltage; when the DC voltage is input from the second port 301b of the bidirectional conversion circuit 301, when the three-phase AC voltage or single-phase AC voltage is output from the first port 301a of the bidirectional conversion circuit 301
  • the bidirectional conversion circuit 301 can be regarded as an inverter circuit, which is used to convert the DC voltage into a three-phase or single-phase AC voltage.
  • the aforementioned bidirectional energy transmission circuit 300 can convert a three-phase or single-phase AC voltage into a DC voltage, or convert a DC voltage into a three-phase or single-phase AC voltage.
  • the bidirectional energy transmission circuit 300 inputs a three-phase AC voltage of 380V, that is, the first port 301a of the bidirectional conversion circuit 301 inputs a three-phase AC voltage of 380V; the second port 301b of the bidirectional conversion circuit 301 outputs a DC voltage.
  • the voltage range is 660V-1000V.
  • the second port 301b of the bidirectional conversion circuit 301 outputs a DC voltage of 800V.
  • the DCDC circuit 302 Since the second port 301b of the bidirectional conversion circuit 301 is connected to the first port 302a of the DCDC circuit 302, the DCDC circuit 302 The input of the first port 302a of the DCDC circuit 302 is also 800V DC voltage, and the range of the DC voltage output from the second port 302b of the DCDC circuit 302 is 200V-500V; the reverse is the same.
  • the first port 301a of the bidirectional conversion circuit 301 includes an A-phase terminal, a B-phase terminal, a C-phase terminal, and an N-phase terminal.
  • the input or output voltage of the first port 301a of the bidirectional conversion circuit 301 is a three-phase AC voltage
  • the three The phase AC voltage is input or output through the A-phase, B-phase, C-phase and N-phase terminals of the bidirectional conversion circuit 301;
  • the input or output voltage of the first port 301a of the bidirectional conversion circuit 301 is a single-phase AC voltage
  • the single-phase AC voltage is input or output through the A-phase terminal and the N-phase terminal of the bidirectional conversion circuit 301.
  • the bidirectional conversion circuit 301 includes an energy storage/filter circuit 3011, a switch network 3012, and an energy storage circuit 3013.
  • the first port 3011a of the energy storage/filter circuit 3011 is the first port 301a of the bidirectional conversion circuit 301, and the second port 3011b of the energy storage/filter circuit 3011 is connected to the first port 3012a of the switch network 3012.
  • the second port 3012b is connected to the first port 3013a of the energy storage circuit 3013;
  • the third port 3011c of the energy storage/filter circuit 3011 is connected to the first port 3013a of the energy storage circuit 3013, and the second port 3013b of the energy storage circuit 3013 is bidirectional
  • the second port 301b of the conversion circuit 301 and the controlled end 301c of the bidirectional conversion circuit 301 include the controlled end 3011d of the energy storage/filter circuit 3011 and the controlled end 3012c of the switch network 3012, that is, the control end 303a of the controller 303
  • the controlled terminal 301c connected to the bidirectional conversion circuit 301 specifically refers to that the control terminal 303a of the controller 303 is connected to the controlled terminal 3011d of
  • the DCDC circuit 302 includes an energy storage device, four bridges, and two resonance networks.
  • the second port 3021b in the first electrical bridge 3021 is connected to the first port 3022a of the first resonant network 3022, and the second port 3022b of the first resonant network 3022 is connected to the first port 3023a of the second electrical bridge 3023;
  • the second port 3025b of the three electric bridge 3025 is connected with the first port 3026a of the second resonant network 3026, and the second port 3026b of the second resonant network 3026 is connected with the first port 3027a of the fourth electric bridge 3027;
  • the second electric bridge The second port 3023b of the 3023 and the second port 3027b of the fourth bridge 3027 are both connected to the first port 3024a of the energy storage device 3024;
  • the first port of the DCDC circuit 302 includes the first port 3021a and the first port 3021a of the first bridge 3021 The first port 3025a of the three electric bridge 3025 and
  • the controlled end 302c of the DCDC circuit 302 includes the controlled end 3021c of the first bridge 3021, the controlled end 3023c of the second bridge 3023, the controlled end 3025c of the third bridge 3025, and the controlled end of the fourth bridge 3027.
  • the terminal 3027c that is, the control terminal 303a of the controller 303 and the controlled terminal 302c of the DCDC circuit 302 specifically refer to the control terminal 303a of the controller 303, the controlled terminal 3021c of the first bridge 3021, and the second bridge 3023.
  • the controlled end 3023c of the third bridge 3025, the controlled end 3025c of the third bridge 3025, and the controlled end 3027c of the fourth bridge 3027 are connected.
  • the controller 303 sends control signals to the energy storage/filter circuit 3011 and the switching network 3012 in the bidirectional conversion circuit 301 through its control terminal 303a, so that the bidirectional conversion circuit 301 realizes different voltages. Conversion between.
  • the controller 303 controls the bidirectional conversion circuit 301 to be in the first working state, which specifically includes:
  • the controller 303 sends control signals to the energy storage/filter circuit 3011 and the switch network 3012 through its control terminal 303a, and controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the first state st1 to achieve:
  • the energy storage/filter circuit 3011 stores energy for the three-phase AC voltage input from its first port 3011a, and outputs a DC voltage from its second port 3011b;
  • the switching network 3012 performs power on the DC voltage input from its first port 3012a Transform and output the transformed DC voltage from its second port 3012b;
  • the energy storage network 3013 stores energy from the DC voltage input from its first port 3013a, and outputs the second DC voltage from its second port 3013b;
  • the controller 303 controls the bidirectional conversion circuit 301 to be in the third working state, which specifically includes:
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the third state st3 to achieve:
  • the energy storage/filter circuit 3011 stores energy for the single-phase AC voltage input from its first port 3011a, and outputs a DC voltage from its second port 3011b;
  • the switching network 3012 performs power on the DC voltage input from its first port 3012a Transform and output the transformed DC voltage from its second port 3012b;
  • the energy storage network 3013 stores energy from the DC voltage input from its first port 3013a, and outputs the second DC voltage from its second port 3013b;
  • the controller 303 controls the bidirectional conversion circuit 301 to be in the fifth working state, which specifically includes:
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network to be in the fifth state st5 to achieve:
  • the energy storage network 3013 stores energy from the DC voltage input from its second port 3013b, and outputs the DC voltage from its first port 3013a;
  • the switching network 3012 performs power conversion on the DC voltage input from its second port 3012b, and from Its first port 3012a outputs the converted DC voltage;
  • the energy storage/filter circuit 3011 filters the DC voltage input from its second port 3011b, and outputs a three-phase AC voltage from its first port 3011a;
  • the controller 303 controls the bidirectional conversion circuit to be in the sixth working state, which specifically includes:
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the sixth state st6 to achieve:
  • the energy storage network 3013 stores energy from the DC voltage input from its second port 3013b, and outputs the DC voltage from its first port 3013a; the switching network 3012 performs power conversion on the DC voltage input from its second port 3012b, and from Its first port 3012a outputs the converted DC voltage; the energy storage/filter circuit 3011 filters the DC voltage input from its second port 3011b, and outputs a single-phase AC voltage from its first port 3011a.
  • the controller 303 sends control signals to the first bridge 3021, the second bridge 3023, the third bridge 3025, and the fourth bridge 3027 in the DCDC circuit 302 through its control terminal 303a. , To control the first electric bridge 3021, the second electric bridge 3023, the third electric bridge 3025 and the fourth electric bridge 3027 to be in different working states, so that the DCDC circuit 302 realizes the conversion between different voltages.
  • the controller 303 controls the DCDC circuit to be in the second working state, which specifically includes:
  • the controller 303 controls the first electrical bridge 3021, the second electrical bridge 3023, the third electrical bridge 3025, and the fourth electrical bridge 3027 to be in the second state st2 to achieve:
  • the first electric bridge 3021 is used to perform power conversion on the DC voltage input from the first port 3021a of the electric bridge 3021, and output the power-converted DC voltage from the second port 3021b of the electric bridge 3021; a first resonance network 3022, used to perform power conversion on the input DC voltage and output the converted DC voltage; the second bridge 3023, used to rectify the DC voltage input from the first port 3023a of the bridge 3023, and from the The second port 3023b of the bridge 3023 outputs the rectified DC voltage;
  • the third electric bridge 3025 is used to perform power conversion on the DC voltage input from the first port 3025a of the electric bridge, and output the power-converted DC voltage from the second port 3025b of the electric bridge 3025; the second resonance network 3026 , For power conversion of the input DC voltage, and output the converted DC voltage; the fourth bridge 3027, for rectifying the DC voltage input from the first port 3027a of the bridge 3027, and from the power The second port 3027b of the bridge 3027 outputs the rectified DC voltage;
  • the second DC voltage is the DC voltage input from the first port 3021a of the first electric bridge 3021, or the DC voltage input from the first port 3025a of the third electric bridge 3025, or the DC voltage input from the first electric bridge 3021 The sum of the DC voltage input from the first port 3021a and the DC voltage input from the first port 3025a of the third electric bridge 3025;
  • the first DC voltage is the DC voltage output from the second port 3023b of the second bridge 3023, or the DC voltage output from the second port 3027b of the fourth bridge 3027, or the second DC voltage from the second bridge 3023.
  • the controller 303 controls the DCDC circuit 302 to be in the fourth working state, which specifically includes:
  • the controller 303 controls the first electrical bridge 3021, the second electrical bridge 3023, the third electrical bridge 3025, and the fourth electrical bridge 3027 to be in the fourth state st4 to achieve:
  • the second electric bridge 3023 is used to perform power conversion on the DC voltage input from the second port 3023b of the electric bridge 3023, and output the converted DC voltage from the first port 3023a of the electric bridge 3023; a first resonance network 3022, used to perform power conversion on the input DC voltage and output the converted DC voltage; the first bridge 3021, used to rectify the DC voltage input from the second port 3021b of the bridge 3021, and from the The first port 3021a of the bridge 3021 outputs the rectified DC voltage;
  • the fourth bridge 3027 is used for power conversion of the DC voltage input from the second port 3027b of the bridge 3027, and output the converted DC voltage from the first port 3027a of the bridge 3027; second resonance The network 3026 is used to convert the input DC voltage and output the converted DC voltage; the third bridge 3025 is used to rectify the DC voltage input from the second port 3025b of the bridge 3025, and from The first port 3025a of the bridge 3025 outputs the rectified DC voltage;
  • the second DC voltage is the DC voltage output from the first port 3021a of the first electric bridge 3021, or the DC voltage output from the first port 3025a of the third electric bridge 3025, or the DC voltage output from the first electric bridge 3021 The sum of the DC voltage output from the first port 3021a and the DC voltage output from the first port 3025a of the third bridge 3025;
  • the first DC voltage is the DC voltage input from the second port 3023b of the second bridge 3023, or the DC voltage input from the second port 3027b of the fourth bridge 3027, or the second DC voltage from the second bridge 3023.
  • the first port 3021a of the first bridge 3021 and the first port 3025a of the third bridge 3025 together form the first port 302a of the DCDC circuit 302, and the energy storage device 3024
  • the second port 3024b is the second port 302b of the DCDC circuit 302.
  • the second port 301b of the bidirectional conversion circuit 301 is connected to the first port 302a of the DCDC circuit 302, specifically referring to that the second port of the energy storage circuit 3013 in the bidirectional conversion circuit 301 is connected to the second port of the first bridge 3021 in the DCDC circuit 302
  • the energy storage/filter circuit 3011 is composed of a capacitor C1, a capacitor C2, a capacitor C3, an inductor L1, an inductor L2, an inductor L3, a switch tube S1, and a switch tube S2;
  • the first end of the inductor L1 is connected to the first end of the switching tube S2 through the capacitor C1
  • the first end of the inductor L2 is connected to the first end of the switching tube S2 through the capacitor C2 and the switching tube S1 in parallel.
  • the first end of the capacitor C2 and the first end of the capacitor L3 is connected to the first end of the switch S2 through the capacitor C3, the first end of the inductor L1, the first end of the inductor L2, and the first end of the inductor L3 are respectively It is the A-phase end, the B-phase end and the C-phase end.
  • the first end of the switch S2 is the N-phase end; the second end of the inductor L1, the second end of the inductor L2 and the second end of the inductor L3 are formed
  • the second port of the energy storage/filter circuit, the second end of the switch tube S2 is the third port 3011c of the energy storage/filter circuit 3011; the controlled terminal 3011d of the energy storage/filter circuit 3011 includes the controlled terminal of the switch tube S1 And the controlled end of the switch tube S2.
  • the switch network 3012 is composed of MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, MOS transistors Q4, MOS transistors Q5, and MOS transistors Q6, a switch transistor S3, a switch transistor S4, and a switch transistor S5;
  • the drain of MOS transistor Q1 and the drain of MOS transistor Q3 are both connected to the drain of MOS transistor Q5, and the source of MOS transistor Q2 and the source of MOS transistor Q4 are both connected to the source of MOS transistor Q6.
  • the source of Q1 is connected to the drain of MOS transistor Q2, the source of MOS transistor Q3 is connected to the drain of MOS transistor Q4, the source of MOS transistor Q5 is connected to the drain of MOS transistor Q6, and the first end of switch S3
  • the part is connected between the source of the MOS transistor Q1 and the drain of the MOS transistor Q2
  • the first end of the switch S4 is connected between the source of the MOS transistor Q3 and the drain of the MOS transistor Q4
  • the first end of the switch S5 One end is connected between the source of the MOS transistor Q5 and the drain of the MOS transistor Q6.
  • the source of the MOS transistor Q1, the source of the MOS transistor Q3 and the source of the MOS transistor Q5 constitute the first port 3012a of the switch network 3012
  • the drain of the MOS transistor Q5, the source of the MOS transistor Q6, the second end of the switch S3, the second end of the switch S4 and the second end of the switch S5 constitute the second port 3012b of the switch network 3012 ;
  • the second port 3011b of the energy storage/filter circuit 3011 is connected to the first port 3012a of the switch network 3012.
  • the second end of the inductor L1 is connected between the source of the MOS transistor Q1 and the drain of the MOS transistor Q2.
  • the second end of L2 is connected between the source of the MOS transistor Q3 and the drain of the MOS transistor Q4, and the second end of the inductor L3 is connected between the source of the MOS transistor Q5 and the drain of the MOS transistor Q6.
  • the switch in this application can be implemented by two MOS transistors connected in series, and the controlled ends of the switch are the gates of the two MOS transistors.
  • the tank circuit is composed of a capacitor C9 and a capacitor C10, wherein the second end of the capacitor C9 is connected to the first end of the capacitor C10;
  • the second port 3011b of the energy storage/filter circuit 3011 connected to the first port 3012a of the switch network 3012 specifically includes: the second end of the inductor L1 is connected between the source of the MOS transistor Q1 and the drain of the MOS transistor Q2, and the inductor The second end of L2 is connected between the source of MOS transistor Q3 and the drain of MOS transistor Q4, and the second end of inductor L3 is connected between the source of MOS transistor Q5 and the drain of MOS transistor Q6;
  • the second port 3012b of the switch network 3012 connected to the first port 3013a of the tank circuit 3013 specifically includes: the drain of the MOS transistor Q5 is connected to the first end of the capacitor C9, and the source of the MOS transistor Q6 is connected to the first end of the capacitor C10.
  • the two ends, the second end of the switching tube S3, the second end of the switching tube S4, and the second end of the switching tube S5 are all connected between the first end of the capacitor C9 and the second end of the capacitor C10 ;
  • the third port 3011c of the energy storage/filter circuit 3011 connected to the first port 3013a of the energy storage circuit 3013 specifically includes: the second end of the switch tube S2 is connected to the second end of the capacitor C9 and the first end of the capacitor C10 between.
  • the first electric bridge 3021 is composed of MOS transistor Q7, MOS transistor Q8, MOS transistor Q9 and MOS transistor Q10, wherein the drain of MOS transistor Q7 is connected to the drain of MOS transistor Q9, and the drain of MOS transistor Q7
  • the source is connected to the drain of the MOS transistor Q8, the source of the MOS transistor Q9 is connected to the drain of the MOS transistor Q10, and the source of the MOS transistor Q10 is connected to the source of the MOS transistor Q8.
  • the first resonant network 3022 is composed of a capacitor C4, an inductor L4, a transformer T1, a capacitor C6, and an inductor L6.
  • the second end of the capacitor C4 is connected to the end of the primary coil of the transformer T1 with the same name through the inductor L4, and the secondary of the transformer T1 The end of the coil with the same name is connected to the first end of the capacitor C6 through the inductor L6.
  • connection between the first port 3022a of the first resonant network 3022 and the second port 3021b of the first bridge 3021 is specifically that the first end of the capacitor C4 in the first resonant network 3022 is connected to the first electrical Between the source of the MOS transistor Q9 in the bridge 3021 and the drain of the MOS transistor Q10, and the synonymous end of the primary coil of the transformer T1 in the first resonant network 3022 is connected to the source of the MOS transistor Q7 of the first bridge 3021 Between the electrode and the drain of the MOS transistor Q8.
  • the second bridge is composed of MOS transistor Q15, MOS transistor Q16, MOS transistor Q17 and MOS transistor Q18, wherein the drain of MOS transistor Q15 is connected to the drain of MOS transistor Q17, and the source of MOS transistor Q15 is connected to MOS transistor Q16
  • the drain of the MOS transistor Q17 is connected to the drain of the MOS transistor Q18, and the source of the MOS transistor Q16 is connected to the source of the MOS transistor Q18;
  • the gate of the MOS tube Q7, the gate of the MOS tube Q8, the gate of the MOS tube Q9 and the gate of the MOS tube Q10 in the first electric bridge 3021 constitute the controlled end 3021c of the first electric bridge 3021;
  • the second electric bridge The gate of the MOS tube Q15, the gate of the MOS tube Q16, the gate of the MOS tube Q17 and the gate of the MOS tube Q18 in 3023 constitute the controlled end 3023c of the second bridge 3023.
  • connection between the second port 3022b of the first resonant network 3022 and the first port 3023a of the second bridge 3023 is specifically that the second end of the capacitor C6 in the first resonant network 3022 is connected to the second electrical Between the source of the MOS transistor Q15 in the bridge 3023 and the drain of the MOS transistor Q16, and the synonymous end of the secondary coil in the first resonant network 3022 is connected to the source of the MOS transistor Q17 in the second bridge 3023 Between and the drain of MOS tube Q18.
  • the third bridge 3025 is composed of MOS transistor Q11, MOS transistor Q12, MOS transistor Q13 and MOS transistor Q14, wherein the drain of MOS transistor Q11 is connected to the drain of MOS transistor Q13, and the drain of MOS transistor Q11
  • the source is connected to the drain of the MOS transistor Q12
  • the source of the MOS transistor Q13 is connected to the drain of the MOS transistor Q14
  • the source of the MOS transistor Q14 is connected to the source of the MOS transistor Q12.
  • the second resonance network 3026 is composed of a capacitor C5, an inductor L5, a transformer T2, a capacitor C7, and an inductor L7, wherein the second end of the capacitor C5 is connected to the first end of the inductor L5, and the second end of the inductor L5 is connected to The end of the primary coil of the transformer T2 with the same name, the end of the secondary coil of the transformer T2 with the same name is connected to the first end of the inductor L7, and the second end of the inductor L7 is connected to the first end of the capacitor C7.
  • connection between the first port 3026a of the second resonant network 3026 and the second port 3025b of the second bridge 3025 is specifically that the first end of the capacitor C5 in the second resonant network 3026 is connected to the second electrical Between the source of the MOS transistor Q13 in the bridge 3025 and the drain of the MOS transistor Q14, and the synonymous end of the primary coil of the transformer T2 in the second resonant network 3026 is connected to the source of the MOS transistor Q11 of the second bridge 3025 Between the electrode and the drain of the MOS transistor Q12.
  • the fourth bridge is composed of MOS transistor Q19, MOS transistor Q20, MOS transistor Q21 and MOS transistor Q22, wherein the drain of MOS transistor Q19 is connected to the drain of MOS transistor Q21, and the source of MOS transistor Q19 is connected to MOS transistor Q20
  • the drain of the MOS transistor Q21 is connected to the drain of the MOS transistor Q22, and the source of the MOS transistor Q20 is connected to the source of the MOS transistor Q22;
  • the gate of the MOS tube Q11, the gate of the MOS tube Q12, the gate of the MOS tube Q13 and the gate of the MOS tube Q14 in the third electric bridge 3025 constitute the controlled end 3025c of the first electric bridge 3025;
  • the fourth electric bridge The gate of the MOS tube Q19, the gate of the MOS tube Q20, the gate of the MOS tube Q21, and the gate of the MOS tube Q22 in 3027 constitute the controlled end 3027c of the first bridge 3027.
  • connection between the second port 3026b of the second resonant network 3026 and the first port 3027a of the fourth bridge 3027 is specifically that the second end of the capacitor C7 in the second resonant network 3026 is connected to the fourth electrical Between the source of the MOS transistor Q19 in the bridge 3027 and the drain of the MOS transistor Q20, and the synonymous end of the secondary coil in the second resonant network 3026 is connected to the source of the MOS transistor Q21 in the fourth bridge 3027 Between the drain of the MOS tube Q22.
  • the second port 3013b of the tank circuit 3013 is connected to the first port 3021a of the first bridge 3021 and the first port 3025a of the third bridge 3025, which specifically includes:
  • the first end of the capacitor C9 is connected to the drain of the MOS transistor Q7, the second end of the capacitor C10 is connected to the source of the MOS transistor Q12, the source of the MOS transistor Q8 and the drain of the MOS transistor Q11 are both connected to the capacitor C9 Between the second end of the capacitor and the first end of the capacitor C10.
  • the energy storage device 3024 may be a capacitor, such as a capacitor C8.
  • the capacitor C8 is not only used for energy storage, but also used for filtering the input or output voltage.
  • the second port 3023b of the second bridge 3023 is connected to the first port 3024a of the energy storage device 3024, specifically the drain of the MOS transistor Q17 and the source of the MOS transistor Q18 in the second bridge 3023 are respectively connected to the capacitor C8
  • the first end and the second end; the second port 3027b of the fourth bridge 3027 is connected to the first port 3024a of the energy storage device 3024, specifically the drain of the MOS transistor Q21 and the MOS transistor in the fourth bridge 3027
  • the source of Q22 is connected to the first end and the second end of the capacitor C8, respectively.
  • the voltage input from the first port 3024a or the second port 3024b of the energy storage device 3024 specifically refers to the voltage input from different sides of the capacitor, as shown in FIG. 5b.
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the first state st1, and controls the DCDC circuit to be in the second state st2, which specifically includes:
  • the controller 303 controls the switching tube S1, the switching tube S2 in the energy storage/filtering circuit 3011 and the MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, MOS tube Q5, MOS tube Q6, and switches in the switching network 3012.
  • the tube S3, the switching tube S4, and the switching tube S5 are respectively disconnected and turned on according to the corresponding first preset rule, so as to realize:
  • the energy storage/filter circuit 3011 stores energy for the three-phase AC voltage input from its first port, and outputs a DC voltage from its second port;
  • the switch network 3012 performs power conversion on the DC voltage input from its first port 3012a, And output the converted DC voltage from its second port 3012b;
  • the energy storage network 3013 stores energy from the DC voltage input from its first port 3013a, and outputs the second DC voltage from its second port 3013b;
  • the controller controls the MOS transistors in the first bridge 3021, the second bridge 3023, the third bridge 3025, and the fourth bridge 3027 to be turned off and turned on according to the seventh preset rule to achieve:
  • the first bridge 3021 and the third bridge 3025 are used for power conversion of the DC voltage input from the first port of the bridge, and output the converted DC voltage from the second port of the bridge;
  • the resonant network 3022 and the second resonant network 3026 are used for power conversion of the input DC voltage and output the converted DC voltage;
  • the second bridge 3023 and the fourth bridge 3027 are used for the second bridge.
  • the DC voltage input from one port is rectified, and the rectified DC voltage is output from the second port of the bridge.
  • the controller 303 controls the first bridge 3021, the second bridge 3023, the third bridge 3025, and the fourth bridge 3027 to be in the fourth state st4, which specifically includes:
  • the controller 303 controls the MOS transistors in the first electric bridge 3021, the second electric bridge 3023, the third electric bridge 3025, and the fourth electric bridge 3027 to be turned off and turned on according to the eighth preset rule, so as to realize:
  • the second bridge 3023 and the fourth bridge 3027 are used for power conversion of the DC voltage input from the second port of the bridge, and output the converted DC voltage from the first port of the bridge;
  • the resonant network 3022 and the second resonant 3026 network are used for power conversion of the input DC voltage and output the converted DC voltage;
  • the first bridge 3021 and the third bridge 3025 are used for the second bridge.
  • the DC voltage input from the two ports is rectified, and the rectified DC voltage is output from the first port of the bridge;
  • the controller 303 controls the switching tube S1, the switching tube S2 in the energy storage/filtering circuit 3011 and the MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, MOS tube Q5, MOS tube Q6, and switches in the switching network 3012.
  • the tube S3, the switching tube S4, and the switching tube S5 are respectively disconnected and turned on according to their corresponding second preset rules to achieve:
  • the energy storage network 3013 stores energy for the DC voltage input from its second port 301b, and outputs the DC voltage from its first port 3013a; the switching network 3012 performs power conversion on the DC voltage input from its second port 3012b, and from Its first port 3012a outputs the converted DC voltage; the energy storage/filter circuit 3011 filters the voltage input from its second port 3011b, and outputs a three-phase AC voltage from its first port 3011a.
  • the circuit shown in Figure 5a can realize the two-way conversion of three-phase AC voltage to DC voltage.
  • the three-phase AC voltage is converted by the two-way conversion circuit 301
  • the A-phase terminal, B-phase terminal, C-phase terminal and N-phase terminal that is, input from the first port 301a of the bidirectional conversion circuit 301, that is, from the first port 3011a of the energy storage/filter circuit 3011), and from the DCDC circuit
  • the second port Vo of 302 (that is, the second port 3024b of the energy storage device 3024) outputs a DC voltage, where the bidirectional conversion circuit 301 is a traditional Vienna rectifier circuit or a PFC circuit, and the voltages on the capacitors C9 and C10 are DC voltages ,
  • the DCDC circuit 302 is a full bridge + CLLC circuit.
  • the DC voltage is input from the second port Vo of the DCDC circuit 302, and the three-phase AC voltage is input from the A-phase terminal and the B-phase terminal of the bidirectional conversion circuit 301 , C-phase terminal and N-phase terminal output.
  • the electric bridge (including the first electric bridge, the second electric bridge, the third electric bridge and the fourth electric bridge) in the DCDC circuit may also be a half bridge circuit or a related modified circuit.
  • bidirectional conversion circuit and the DCDC circuit are not limited to the structure shown in FIG. 5a, and may also be bidirectional conversion circuits and DCDC circuits of other structures.
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the third state st3, which specifically includes:
  • the controller 303 controls the switching tube S1 in the energy storage/filter circuit 3011 to close and the switching tube S2 to open, controls the switching tube S5 in the switching network 3012 to open, the MOS tube Q5 to open and the MOS tube Q6 to open, and controls the switching network 3012
  • the MOS tube Q1, the MOS tube Q2, the MOS tube Q3, the MOS tube Q4, the switch tube S3 and the switch tube SS4 are respectively turned off and turned on according to the corresponding third preset rule to realize:
  • the energy storage/filter circuit 3011 stores energy for the single-phase AC voltage input from its first port 3011a, and outputs a DC voltage from its second port 3011b;
  • the switching network 3012 performs power on the DC voltage input from its first port 3012a Transform and output the transformed DC voltage from its second port 3012b;
  • the energy storage network 3013 stores energy from the DC voltage input from its first port 3013a, and outputs the second DC voltage from its second port 3013b;
  • the controller 303 also controls the first electrical bridge 3021, the second electrical bridge 3023, the third electrical bridge 3025, and the fourth electrical bridge 3027 to be in the second state st2, which specifically includes:
  • the controller controls the MOS transistors in the third bridge 3025 to short circuit and the MOS transistors in the fourth bridge 3027 to open, and controls the MOS transistors in the first bridge and the second bridge to follow the ninth preset.
  • Set rules for disconnection and conduction to achieve:
  • the first electric bridge 3021 is used to perform power conversion on the DC voltage input from the first port 3021a of the electric bridge 3021, and output the power-converted DC voltage from the second port 3021b of the electric bridge 3021; a first resonance network 3022, used to perform power conversion on the input DC voltage and output the converted DC voltage; the second bridge 3023, used to rectify the DC voltage input from the first port 3023a of the bridge 3023, and from the The second port 3023b of the bridge 3023 outputs the rectified DC voltage;
  • the MOS transistors in the first bridge 3021 are controlled to be short-circuited and the MOS transistors in the second bridge 3023 are controlled to open, and the MOS transistors in the third bridge and the fourth bridge are controlled according to the eleventh preset
  • the rules are disconnected and turned on to achieve:
  • the third electric bridge 3025 is used to perform power conversion on the DC voltage input from the first port 3025a of the electric bridge 3025, and output the power-converted DC voltage from the second port 3025b of the electric bridge 3025; a second resonance network 3026, used to perform power conversion on the input DC voltage, and output the converted DC voltage; the fourth bridge 3027, used to rectify the DC voltage input from the first port 3027a of the bridge 3027, and from the The second port 3027b of the bridge 3027 outputs the rectified DC voltage.
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the third state st3, which specifically includes:
  • the controller 303 controls the switching tube S1 in the energy storage/filtering circuit 3011 to close and the switching tube S2 to open, and controls the switching tube S3, the switching tube S4, and the switching tube S5 in the switching network 3012 to open, and the MOS tube Q5 to open and MOS.
  • the tube Q6 is open, and the MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, switching tube S3, and switching tube SS4 in the switching network are controlled to be disconnected and turned on according to the corresponding fifth preset rule, respectively, to achieve :
  • the energy storage/filter circuit 3011 stores energy for the single-phase AC voltage input from its first port 3011a, and outputs a DC voltage from its second port 3011b;
  • the switching network 3012 performs power on the DC voltage input from its first port 3012a Transform and output the transformed DC voltage from its second port 3012b;
  • the energy storage network 3013 stores energy from the DC voltage input from its first port 3013a, and outputs the second DC voltage from its second port 3013b;
  • controller 303 controls the first electric bridge 3021, the second electric bridge 3023, the third electric bridge 3025, and the fourth electric bridge 3027 to be in the second state st2, which specifically includes:
  • the controller 303 controls the MOS transistors in the first bridge 3021, the second bridge 3023, the third bridge 3025, and the fourth bridge 3027 to be turned off and turned on according to the seventh preset rule to achieve:
  • the first bridge 3021 and the third bridge 3025 are used for power conversion of the DC voltage input from the first port of the bridge, and output the converted DC voltage from the second port of the bridge;
  • the resonant network 3022 and the second resonant network 3026 are used for power conversion of the input DC voltage and output the converted DC voltage;
  • the second bridge 3023 and the fourth bridge 3027 are used for the second bridge.
  • the DC voltage input from one port is rectified, and the rectified DC voltage is output from the second port of the bridge.
  • the controller controls the first electric bridge 3021, the second electric bridge 3023, the third electric bridge 3025, and the fourth electric bridge 3027 to be in the fourth state st4, which specifically includes:
  • the controller controls the MOS transistors in the third bridge 3025 to be short-circuited and the MOS transistors in the fourth bridge 3027 to be open, and controls the MOS transistors in the first bridge 3021 and the second bridge 3023. Disconnect and conduct according to the tenth preset rule to achieve:
  • the second electric bridge 3023 is used to perform power conversion on the DC voltage input from the second port 3023b of the electric bridge 3023, and output the converted DC voltage from the first port 3023a of the electric bridge 3023; a first resonance network 3022, used to perform power conversion on the input DC voltage and output the converted DC voltage; the first bridge 3021, used to rectify the DC voltage input from the second port 3021b of the bridge 3021, and from the The first port 3021a of the bridge 3021 outputs the rectified DC voltage;
  • the controller 303 controls the MOS transistors in the first bridge 3021 to be short-circuited and the MOS transistors in the second bridge 3023 to be open, and controls the third bridge 3025 and the fourth bridge 3027 to
  • the MOS tube is disconnected and turned on according to the twelfth preset rule to achieve:
  • the fourth electric bridge 3027 is used to perform power conversion on the DC voltage input from the second port 3027b of the electric bridge 3027, and output the converted DC voltage from the first port 3027a of the electric bridge 3027;
  • the second resonance network 3026 used to perform power conversion on the input DC voltage and output the converted DC voltage;
  • the third bridge 3025 used to rectify the DC voltage input from the second port 3025b of the bridge 3025, and from the The first port 3025a of the bridge 3025 outputs the rectified DC voltage;
  • the controller 303 controls the energy storage/filter circuit 3011 and the switch network 3012 to be in the sixth state st6, which specifically includes:
  • the controller 303 controls the switching tube S1 in the energy storage/filtering circuit 3011 to close and the switching tube S2 to open, and the switching tube S3, the switching tube S4 and the switching tube S5 in the switching network are all disconnected, and the MOS tube Q5 is opened and the MOS tube is opened.
  • Q6 is open, and controls the MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, MOS transistors Q4, switch transistors S3 and switch transistors SS4 in the switching network to be disconnected and turned on respectively according to the corresponding fourth preset rule to achieve:
  • the energy storage network 3013 stores energy from the DC voltage input from its second port 3013b, and outputs the DC voltage from its first port 3013a; the switching network 3012 performs power conversion on the DC voltage input from its second port 3012b, and from Its first port 3012a outputs the converted DC voltage; the energy storage/filter circuit 3011 filters the voltage input from its second port 3011b, and outputs a single-phase AC voltage from its first port 3011a.
  • the controller 303 controls the first bridge 3021, the second bridge 3023, the third bridge 3025, and the fourth bridge 3027 to be in the fourth state st4, which specifically includes:
  • the controller 303 controls the MOS transistors in the first electric bridge 3021, the second electric bridge 3023, the third electric bridge 3025, and the fourth electric bridge 3027 to be turned off and turned on according to the eighth preset rule, so as to realize:
  • the second bridge 3023 and the fourth bridge 3027 are used for power conversion of the DC voltage input from the second port of the bridge, and output the converted DC voltage from the first port of the bridge;
  • the resonant network 3022 and the second resonant network 3026 are used for power conversion of the input DC voltage and output the converted DC voltage;
  • the first bridge 3021 and the third bridge 3025 are used for the second bridge.
  • the DC voltage input from the two ports is rectified, and the rectified DC voltage is output from the first port of the bridge;
  • controller 303 controls the energy storage/filter circuit 3011 and the switch network to be in the sixth state st6, which specifically includes:
  • the controller 303 controls the switching tube S1 in the energy storage/filtering circuit 3011 to close and the switching tube S2 to open, and the switching tube S3, the switching tube S4 and the switching tube S5 in the switching network are all disconnected, and the MOS tube Q5 is opened and the MOS tube is opened.
  • Q6 is open, and controls the MOS transistors Q1, MOS transistors Q2, MOS transistors Q3, MOS transistors Q4, switch transistors S3 and switch transistors SS4 in the switching network to be disconnected and turned on respectively according to the corresponding fourth preset rule to achieve:
  • the energy storage network 3013 stores energy from the DC voltage input from its second port 3013b, and outputs the DC voltage from its first port 3013a;
  • the switching network 3012 performs power conversion on the DC voltage input from its second port 3012b, and from Its first port 3012a outputs the converted DC voltage;
  • the energy storage/filter circuit 3011 filters the voltage input from its second port 3011b, and outputs a single-phase AC voltage from its first port 3011a;
  • the controller 303 controls the switching tube S1 in the energy storage/filtering circuit 3011 to open and the switching tube S2 to close, and controls the switching tube S3, the switching tube S4 and the switching tube S5 in the switching network 3012 to all open MOS transistors Q3, MOS transistors Q4, MOS transistors Q5 and MOS transistors Q6 are all open, and the MOS transistors Q1 and MOS transistors Q2 in the switch network 3012 are respectively turned off and turned on according to the corresponding sixth preset rule to achieve :
  • the energy storage network 3013 stores energy from the DC voltage input from its second port 3013b, and outputs the DC voltage from its first port 3013a; the switching network 3012 performs power conversion on the DC voltage input from its second port 3012b, and from Its first port 3012a outputs the converted DC voltage; the energy storage/filter circuit 3011 filters the voltage input from its second port 3011b, and outputs a single-phase AC voltage from its first port 3011a.
  • the input or output of the three-phase or single-phase AC voltage from the first port 301a of the bidirectional conversion circuit 301 specifically refers to the three-phase or single-phase AC voltage from the first port 3011a of the energy storage/filter circuit 3011.
  • Input or output; the DC voltage is input or output from the second port 301b of the bidirectional conversion circuit 301, specifically referring to the input or output from the second port of the second port 3013b of the energy storage circuit 3013.
  • the bidirectional conversion circuit 301 when the single-phase AC voltage is converted into a DC voltage, the bidirectional conversion circuit 301 can be called a PFC circuit, and when the DC voltage is converted into a single-phase AC voltage, the bidirectional conversion circuit 301 can be called an inverter. Circuit.
  • the controller 303 controls the switching tube S1 to close, the switching tube S2 and the switching tube S5 are disconnected, and the MOS tube Q5 and the MOS tube Q6 are opened.
  • other components work normally; in the DCDC circuit 302, the MOS transistor Q11, MOS transistor Q12, MOS transistor Q13, and MOS transistor Q14 are all short-circuited through the controller 303, and the MOS transistors Q19, MOS transistors Q20, MOS transistors Q21 and MOS are all short-circuited. Except Q22 is open circuit, other components are in normal working condition, as shown in Figure 6;
  • the switch S1 When the DC voltage is converted into single-phase AC voltage, the switch S1 is closed by the controller 303 in the bidirectional conversion circuit 301, the switch S2, the switch S3, the switch S4 and the switch S5 are all disconnected, and the MOS transistor Except for the open circuit of Q5 and MOS transistor Q6, other components work normally; in the DCDC circuit 302, the MOS transistor Q11, MOS transistor Q12, MOS transistor Q13 and MOS transistor Q14 are all short-circuited through the controller 303, and the MOS transistors Q19 and MOS transistors are all short-circuited. Except Q20, MOS transistor Q21, and MOS transistor Q22 are all open, other components are all in a normal working state, as shown in Figure 7.
  • the second port Vo outputs DC voltage.
  • the switching tube S1 is closed, the switching tube S2 is disconnected, the switching tube S5 is disconnected, and the MOS tube Q5 and the MOS tube Q6 are opened.
  • Inductor L1, inductor L2, MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q4, switch tube S3, switch tube S4 and capacitor C9 together form a new bidirectional conversion circuit 301.
  • the circuit can be regarded as a bridgeless PFC circuit, used to convert single-phase AC voltage to DC voltage; MOS tube Q11, MOS tube Q12, MOS tube Q13 and MOS tube Q14 are short-circuited, MOS tube Q19, MOS tube Q20, MOS tube Q21 and MOS tube Q22 are open, also That is to say capacitor C2, capacitor C3, capacitor C10, inductor L3, MOS tube Q5, MOS tube Q6, MOS tube Q11, MOS tube Q12, MOS tube Q13, MOS tube Q14, MOS tube Q19, capacitor C5, inductor L5, transformer T2 , Inductor L7, capacitor C7, MOS tube Q20, MOS tube Q21, and MOS tube Q22 are not working.
  • MOS tube Q7, MOS tube Q8, MOS tube Q9, MOS tube Q10, capacitor C4, inductor L4, inductor T1, inductor L6, capacitor C6, MOS tube Q15, MOS tube Q16, MOS tube Q17, MOS tube Q18, and capacitor C8 are common Form a new DCDC circuit.
  • the switching tube S1 is closed, and the switching tubes S2 and S5 are disconnected.
  • MOS tube Q7, MOS tube Q8, MOS tube Q9, MOS tube Q10, capacitor C4, inductor L4, transformer T1, inductor L6, capacitor C6, MOS tube Q15, MOS tube Q16, MOS tube Q17, MOS tube Q18, and capacitor C8 are common Form a new DCDC circuit, MOS tube Q11, MOS tube Q12, MOS tube Q13, MOS tube Q14 short circuit, MOS tube Q19, MOS tube Q20, MOS tube Q21 and MOS tube Q22 open circuit, namely MOS tube Q11, MOS tube Q12, MOS tube Q13, MOS tube Q14, capacitor C5, inductor L5, transformer T2, inductor L7, capacitor C7, MOS tube Q19, MOS tube Q20, MOS tube Q21 and MOS tube Q22 do not work; inductor L3, MOS tube Q5 and MOS tube Q6 is open, inductor L1, inductor L2, MOS tube Q1, MOS tube Q2, MOS tube Q3, MOS tube Q
  • the first port 301a of the bidirectional conversion circuit 301 is composed of an A-phase end and an N-phase end
  • the second port 302b is composed of the first and second ends of the capacitor C9 and the source of the MOS transistor Q4; DCDC circuit
  • the first port 302a of the 302 is formed by the drain of the MOS transistor Q7 and the source of the MOS transistor Q8, and the second port 302b is formed by the first end and the second end of the capacitor C8.
  • a specific circuit as shown in FIG. 8 and FIG. 9 can also be used to realize the bidirectional conversion of single-phase AC voltage-DC voltage.
  • FIG. 8 and FIG. 9 can also be used to realize the bidirectional conversion of single-phase AC voltage-DC voltage.
  • FIG. 8 and FIG. 9 For the specific link relationship of the circuits shown in FIG. 8 and FIG. 9, refer to the specific description of FIG. 6 and FIG. 7, which will not be described here.
  • the controller 303 controls the switching tube S1 to be closed, the switching tube S2 and the switching tube S5 are disconnected, and the MOS tube Q5 and the MOS tube Q6 are open, and other components work normally; in the DCDC circuit In 302, the MOS tube Q7, MOS tube Q8, MOS tube Q9, and MOS tube Q10 are all short-circuited through the controller 303, and the MOS tube Q15, MOS tube Q16, MOS tube Q17, and MOS tube Q18 are all open. In normal working condition, as shown in Figure 8.
  • the switch S1 is closed by the controller 303, the switch S2, the switch S3, the switch S4 and the switch S5 are all disconnected, and the MOS transistor Q5 and the MOS transistor Q6 are open, other components Normal operation;
  • the MOS tube Q7, MOS tube Q8, MOS tube Q9 and MOS tube Q10 are all short-circuited through the controller 303, and the MOS tube Q15, MOS tube Q16, MOS tube Q17 and MOS tube Q18 are all open.
  • other components are in normal working condition, as shown in Figure 9.
  • the second port Vo outputs DC voltage.
  • the switching tube S1 is closed, the switching tube S2 and the switching tube S5 are disconnected, the MOS tube Q5 and the MOS tube Q6 are open;
  • the inductor L1, the inductor L2, the MOS tube Q1, the MOS tube Q2, the MOS tube Q3, the MOS tube Q4, and the switch Tube S3, switch tube S4 and capacitor C10 together form a new bidirectional conversion circuit, which can be regarded as a PFC circuit, which is used to convert single-phase AC voltage to DC voltage;
  • MOS tube Q7, MOS tube Q8, MOS tube Q9 and MOS tube Q10 are short-circuited, MOS tube Q15, MOS tube Q16, MOS tube Q17 and MOS tube Q18 are open, that is to say MOS tube Q7, MOS tube Q8, MOS tube Q9, MOS tube Q10, capacitor C4, induct
  • the switching tube S1 When energy flows in the reverse direction (that is, the DC voltage is converted into a single-phase AC voltage), as shown in FIG.
  • the phase end outputs single-phase AC voltage.
  • the switching tube S1 is closed, the switching tubes S2 and S5 are disconnected; MOS tube Q11, MOS tube Q12, MOS tube Q13, MOS tube Q14, capacitor C5, inductor L5, inductor T2, inductor L7, capacitor C7, MOS transistor Q19 , MOS tube Q20, MOS tube Q21, MOS tube Q22, and capacitor C8 form a new DCDC circuit; MOS tube Q7, MOS tube Q8, MOS tube Q9 and MOS tube Q10 are short-circuited, MOS tube Q15, MOS tube Q16, MOS tube Q17 And MOS tube Q18 are open circuit, that is to say MOS tube Q7, MOS tube Q8, MOS tube Q9, MOS tube Q10, capacitor C4, inductor L4, transformer T1, inductor L6, capacitor C
  • the first port 301a of the bidirectional conversion circuit 301 is composed of an A-phase end and an N-phase end
  • the second port 301b is composed of the first and second ends of the capacitor C10 and the drain of the MOS transistor Q3;
  • the DCDC circuit 302 The first port 302a is formed by the drain of the MOS transistor Q11 and the source of the MOS transistor Q13, and the second port 302b is formed by the first end and the second end of the capacitor C8.
  • the bidirectional energy transmission circuit for realizing the bidirectional conversion of single-phase AC voltage to DC voltage can also have other circuit structures.
  • FIG. 10 The circuit shown in FIG. 10 is obtained when some devices in the circuit shown in FIG. 5a are in a non-working state. Specifically, as shown in FIG. The switching tube S4 and the switching tube S5 are both disconnected, and the capacitor C2, the capacitor C3, the inductor L3, the MOS tube Q5 and the MOS tube Q6 are open, and other components in the bidirectional energy transmission circuit are in a normal working state.
  • the switching tube S1 is closed, the switching tubes S2, S3, S4 and S5 are disconnected, the MOS tube Q5 and the MOS tube Q6;
  • the inductance L1 is open, the inductance L2, the MOS tube Q1, the MOS tube Q2, the MOS tube Q3, and the MOS tube Q4 , Capacitor C9 and Capacitor C10 together form a two-way conversion circuit.
  • the two-way conversion circuit When the two-way conversion circuit is used to convert a single-phase AC voltage to a DC voltage, the two-way conversion circuit can be regarded as a PFC circuit; when the two-way conversion circuit is used to convert a DC voltage to a single-phase AC voltage, the two-way conversion circuit can be Think of it as an inverter circuit;
  • the above-mentioned new bidirectional conversion circuit and new DCDC circuit can not only realize the rectification of single-phase AC voltage, but also realize the inversion of DC voltage.
  • the first port 301a of the bidirectional conversion circuit 301 is composed of an A-phase end and an N-phase end, and the second port 301b is composed of the first and second ends of the capacitor C9 and the second end of the capacitor C10; DCDC
  • the first port 302a of the circuit 302 is formed by the drain of the MOS transistor Q7 and the source of the MOS transistor Q13, and the second port 302b is formed by the first end and the second end of the capacitor C8.
  • the DCDC circuit in the circuit shown in Figure 10 and the DCDC circuit in the circuits shown in Figures 6-9 have two more full-bridge circuits and one CLLC circuit, so that the DCDC circuit in the circuit shown in Figure 10
  • the voltage regulation range is greater than that of the DCDC circuit in the circuit shown in Figure 6-9.
  • the bidirectional conversion circuit 301 in the bidirectional energy transmission circuit may also have other circuit structures, as shown in FIG. 11.
  • the circuit shown in FIG. 11 is obtained when some devices in the circuit shown in FIG. 5a are in a non-operating state. Specifically, as shown in FIG. S1, switching tube S3, switching tube S4, and switching tube S5 are disconnected, MOS tube Q3, MOS tube Q4, MOS tube Q5, and MOS tube Q6 are open, other components in the bidirectional energy transmission circuit 300 are in normal working conditions .
  • the switch tube S2 is closed, the switch tube S1, the switch tube S3, the switch tube S4 and the switch tube S5 are disconnected, and the MOS tube Q3, the MOS tube Q4, the MOS tube Q5, and the MOS tube Q6 are open; the capacitor C1,
  • the first port 301a of the bidirectional conversion circuit 301 includes an A-phase end and an N-phase end, and the second port 301b is composed of the first end of the capacitor C9 and the first and second ends of the capacitor C10; DCDC circuit
  • the first port 302a of 302 is formed by the drain of the MOS transistor Q7, the source of the MOS transistor Q8, and the source of the MOS transistor Q13, and the second port 302b is formed by the first end and the second end of the capacitor C8.
  • this application provides a two-way energy transmission device.
  • the rectification of three-phase AC power can be realized, and the rectification of single-phase AC power can also be realized, and the energy can flow in the reverse direction.
  • it can realize DC to three-phase AC inversion, and also can realize DC to single-phase AC inverter, the configuration is flexible and changeable, and at the same time, it can realize the function of high-power charging.
  • an embodiment of the present application further provides an on-board charger, which includes the two-way energy transmission device disclosed in the embodiment of the present application.
  • the embodiment of the present application also provides an electric vehicle, the electric vehicle includes a control system and an energy system, wherein the energy system includes the above-mentioned FIG. 5a, and any one of FIG. 6 to FIG. Two-way energy transmission device or the above-mentioned on-board charger.

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Abstract

一种双向能量传输装置(30),包括:控制器(303)和双向转能传输电路(300),其中,控制器(303)的控制端(303a)连接到双向能量传输电路(303)的受控端(300c);控制器(303),用于控制双向能量传输电路(300)处于整流工作状态,以实现将从双向能量传输电路(300)的第一端口(300a)输入的三相或单相交流电压转换为第一直流电压,并从双向能量传输电路(300)的第二端口(300b)输出,或者用于控制双向能量传输电路(300)处于逆变工作状态,以实现将从双向能量传输电路(300)的第二端口(300b)输入的第一直流电压转换为三相或者单相交流电压,并从双向能量传输电路的第一端口(300a)输出。控制器(303)通过控制双向能量传输电路(300)处于不同的工作状态,实现了三相/单相交流电压到直流电压的双向转换,配置灵活多变。

Description

双向能量传输装置、车载充电器及电动汽车 技术领域
本申请涉及车载充电领域,具体涉及一种双向能量传输装置、车载充电器及电动汽车。
背景技术
随着电动车的发展,车载充电器(on-board-charger,OBC)得到了广泛应用。同时发现电动车的电池容量越来越高,充电时间的增加变得明显,三相交流输入的OBC可以提升充电功率,缩短充电时间。同时,为了增加用户体验,逆变电路已经作为了一种标配的功能,通过逆变技术可以实现车辆到车辆(vehicle-to-vehicle,V2V)、车辆到负载(vehicle-to-load,V2L)以及车辆到电网(vehicle-to-grid,V2G)的应用。如何通过合理的设计,既可以大功率充电,同时又能实现逆变功能是需要亟需结局的问题。
针对上述问题,现有技术提出了如图1所示的电路,其工作的原理为:采用三个独立变换器的方式,每个独立的变换器包含了功率因素校正(power pactor correction,PFC)电路和直流转电流(direct current-direct current,DCDC)电路,三个独立的变换器输出端口(即DCDC电路1的输出端口V o1、DCDC电路2的输出端口V o2,和DCDC电路3的输出端口V o3,)采用并联连接的方式,其中,由PFC电路1和DCDC电路1组成的变换器1与由PFC电路2和DCDC电路2组成的变换器2的硬件拓扑架构相同,是有桥PFC+LLC谐振电路组合,输出侧是全桥二极管整流,由PFC电路3和DCDC电路3组成的变换器3为无桥PFC+LLC组合,输出为全桥MOS管组合,这样变换器3还可以实现逆变功能。
但是图1所示电路的缺点就是电路复杂,使用的功率器件太多,成本高,系统不稳定,而且在逆变的时候只能实现单相逆变,逆变输出的功率低。
发明内容
本申请实施例提供了一种双向能量传输装置、车载充电器及电动汽车,采用本申请实施例实现了既可以大功率充电功能,同时又可以逆变的功能。
第一方面,本申请实施例提供了一种双向能量传输装置,包括:控制器和双向转能传输电路,其中,控制器的控制端连接到双向能量传输电路的受控端;
控制器,用于控制双向能量传输电路处于整流工作状态,以实现将从双向能量传输电路的第一端口输入的三相或单相交流电压转换为第一直流电压,并从双向能量传输电路的第二端口输出,或者用于控制双向能量传输电路处于逆变工作状态,以实现将从双向能量传输电路的第二端口输入的第一直流电压转换为三相或者单相交流电压,并从双向能量传输电路的第一端口输出。
控制器通过控制双向能量传输电路处于不同的工作状态,实现了三相/单相交流电压到直流电压的双向转换,配置灵活多变。实现了既可以大功率充电功能,同时又可以逆变的功能。
在一个可行的实施例中,整流工作状态包括第一整流工作状态和第二整流工作状态, 控制器控制双向能量传输电路处于整流工作状态,具体包括:
当检测到双向能量传输电路的第一端口输入的是三相交流电压时,控制器控制双向能量传输电路处于第一整流工作状态,以实现将三相交流电压转换为第一直流电压,并从双向能量传输电路的第二端口输出;
当检测到双向能量传输电路的第一端口输入的是单相交流电压时,控制器控制双向能量传输电路处于第一整流工作状态,以实现将三相交流电压转换为第一直流电压,并从双向能量传输电路的第二端口输出。
在一个可行的实施例中,逆变工作状态包括第一逆变工作状态和第二逆变工作状态,控制器控制双向能量传输电路处于逆变工作状态,具体包括:
当检测到双向能量传输电路的第一端口输出的是三相交流电压时,控制器控制双向能量传输电路处于第一逆变工作状态,以实现将从双向能量传输电路的第二端口输入的第一直流电压转换为三相交流电压,并从双向能量传输电路的第一端口输出;
当检测到双向能量传输电路的第一端口输出的是单相交流电压时,控制器控制双向能量传输电路处于第二逆变工作状态,以实现将从双向能量传输电路的第二端口输入的第一直流电压转换为单相交流电压,并从双向能量传输电路的第一端口输出。
在此需要指出的是,检测双向能量传输电路的第一端口输入或者输出的是三相交流电压还是单相交流电压可以通过检测双向能量传输电路的第一端口所连接的接头类型;当接头类型为四孔接头时,确定双向能量传输电路的第一端口输入或者输出的是三相交流电压;当接头类型为两孔接头时,确定双向能量传输电路的第一端口输入或者输出的是单相相交流电压。
具体地,双向能量传输电路包括双向转换电路和直流转直流(direct current to direct current,DCDC)电路,其中,双向转换电路的第二端口连接到DCDC电路的第一端口,双向传输电路的受控端包括双向转换电路的受控端和DCDC电路的受控端;控制器控制双向能量传输电路处于第一整流状态,具体包括:
控制器控制双向转换电路处于第一工作状态,以实现将从双向转换电路的第一端口输入的三相交流电压转换为第二直流电压,并从双向转换电路的第二端口输出;并控制DCDC电路处于第二工作状态,以实现将从DCDC电路的第一端口输入的第二直流电压转换为第一直流电压,并从DCDC电路的第二端口输出;
控制器控制双向能量传输电路处于第二整流状态,具体包括:
控制器控制双向转换电路处于第三工作状态,以实现将从双向转换电路的第一端口输入的单相交流电压转换为第二直流电压,并从双向转换电路的第二端口输出;并控制DCDC电路处于第二工作状态,以实现将从DCDC电路的第一端口输入的第二直流电压转换为第一直流电压,并从DCDC电路的第二端口输出;其中,第一直流电压与第二直流电压相同或者不同。
具体地,控制器控制双向能量传输电路处于第一逆变状态,具体包括:
控制器控制DCDC电路处于第四工作状态,以实现将从DCDC电路的第二端口输入的第一电压转换为第二直流电压,并从所DCDC电路的第一端口输出;并控制双向转换电路处于第五工作状态,以实现将从双向转换电路的第二端口输入的第二直流电压转换为三相 交流电压,并从双向转换电路的第一端口输出;
控制器控制双向能量传输电路处于第二逆变状态,具体包括:
控制器控制DCDC电路处于第四工作状态,以实现将从DCDC电路的第二端口输入的第一电压转换为第二直流电压,并从DCDC电路的第一端口输出;并控制双向转换电路处于第六工作状态,以实现将从双向转换电路的第二端口输入的第二直流电压转换为单相交流电压,并从双向转换电路的第一端口输出。
在一个可行的实施例中,双向转换电路包括储能/滤波电路、开关网络和储能电路,其中,储能/滤波电路的第一端口为双向转换电路的第一端口,储能/滤波电路的第二端口连接到开关网络的第一端口,储能/滤波电路的第三端口连接到储能电路的第一端口,开关网络的第二端口连接到储能电路的第一端口,储能电路的第二端口为双向转换电路的第二端口;双向转换电路的受控端包括储能/滤波电路的受控端和开关网络的受控端,
DCDC电路包括第一电桥、第二电桥、第三电桥、第四电桥、第一谐振网络、第二谐振网络和储能器件,
其中,DCDC电路的第一端口包括第一电桥的第一端口和第三电桥的第一端口,第一电桥的第二端口连接到第一谐振网络的第一端口,第一谐振网络的第二端口连接到第二电桥的第一端口,第三电桥的第二端口连接到第二谐振网络的第一端口,第二谐振网络的第二端口连接到第四电桥的该电桥的第二端口,第二电桥的第二端口和第四电桥的第二端口均连接到储能器件的第一端口,DCDC电路的第二端口为储能器件的第二端口;DCDC电路的受控端包括第一电桥的受控端、第二电桥的受控端、第三电桥的受控端和第四电桥的受控端。
在一个可行的实施例中,控制器控制双向转换电路处于第一工作状态,具体包括:
控制器控制储能/滤波电路和开关网络处于第一状态st1,以实现:
储能/滤波电路对从其第一端口输入的三相交流电压进行储能,并从其第二端口输出直流电压;开关网络对从其第一端口输入的直流电压进行功率变换,并从其第二端口输出变换后的直流电压;储能网络对从其第一端口输入的直流电压进行储能,并从其第二端口输出第二直流电压。
在一个可行的实施例中,控制器控制双向转换电路处于第三工作状态,具体包括:
控制器控制储能/滤波电路和开关网络处于第三状态st3,以实现:
储能/滤波电路对从其第一端口输入的单相交流电压进行储能,并从其第二端口输出直流电压;开关网络对从其第一端口输入的直流电压进行功率变换,并从其第二端口输出变换后的直流电压;储能网络对从其第一端口输入的直流电压进行储能,并从其第二端口输出第二直流电压。
在一个可行的实施例中,控制器控制双向转换电路处于第五工作状态,具体包括:
控制器控制储能/滤波电路和开关网络处于第五状态st5,以实现:
储能网络对从其第二端口输入的直流电压进行储能,并从其第一端口输出直流电压;开关网络对从其第二端口输入的直流电压进行功率变换,并从其第一端口输出变换后的直流电压;储能/滤波电路对从其第二端口输入的直流电压进行滤波,并从其第一端口输出三相交流电压。
在一个可行的实施例中,控制器控制双向转换电路处于第六工作状态,具体包括:
控制器控制储能/滤波电路和开关网络处于第六状态st6,以实现:
储能网络对从其第二端口输入的直流电压进行储能,并从其第一端口输出直流电压;开关网络对从其第二端口输入的直流电压进行功率变换,并从其第一端口输出变换后的直流电压;储能/滤波电路对从其第二端口输入的直流电压进行滤波,并从其第一端口输出单相交流电压。
在一个可行的实施例中,控制器控制DCDC电路处于第二工作状态,具体包括:
控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,以实现:
第一电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
和/或
第三电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第四电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
其中,第二直流电压为从第一电桥的第一端口输入的直流电压,或者为从第三电桥的第一端口输入的直流电压,或者为从第一电桥的第一端口输入的直流电压和从第三电桥的第一端口输入的直流电压之和;
第一直流电压为从第二电桥的第二端口输出的直流电压,或者为从第四电桥的第二端口输出的直流电压,或者为从第二电桥的第二端口输出的直流电压和从第四电桥的第二端口输出的直流电压之和。
在一个可行的实施例中,控制器控制DCDC电路处于第四工作状态,具体包括:
控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,以实现:
第二电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压;
和/或
第四电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出功率变换后的直流电压;第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第三电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压;
其中,第二直流电压为从第一电桥的第一端口输出的直流电压,或者为从第三电桥的第一端口输出的直流电压,或者为从第一电桥的第一端口输出的直流电压和从第三电桥的第一端口输出的直流电压之和;
第一直流电压为从第二电桥的第二端口输入的直流电压,或者为从第四电桥的第二端 口输入的直流电压,或者为从第二电桥的第二端口输入的直流电压和从第四电桥的第二端口输入的直流电压之和。
在一个可行的实施例中,双向能量传输电路的第一端口包括A相端、B相端、C相端和N相端;
当从双向能量传输电路的第一端口输入或输出的为三相交流电压时,该三相交流电压从双向能量传输电路的A相端、B相端、C相端和N相端输入或输出;当从双向能量传输电路的第一端口输入或输出的为单相交流电压时,该单相交流电压从双向能量传输电路的A相端和N相端输入或输出。
在一个可行的实施例中,储能/滤波电路由电容C1、电容C2、电容C3、电感L1、电感L2、电感L3、开关管S1和开关管S2构成;
其中,电感L1的第一端部通过电容C1连接至开关管S2的第一端部,电感L2的第一端部通过并联的电容C2和开关管S1连接到开关管S2的第一端部,电容C2和电容L3的第一端部通过电容C3连接到开关管S2的第一端部,电感L1的第一端部、电感L2的第一端部和电感L3的第一端部分别为A相端、B相端和C相端,开关管S2的第一端部为N相端;电感L1的第二端部、电感L2的第二端部和电感L3的第二端部构成储能/滤波电路的第二端口,开关管S2的第二端部为储能/滤波电路的第三端口;
储能/滤波电路的受控端包括开关管S1的受控端和开关管S2的受控端。
在一个可行的实施例中,开关网络由MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5构成,
其中,MOS管Q1的漏极和MOS管Q3的漏极均连接到MOS管Q5的漏极,MOS管Q1的源极连接到MOS管Q2的漏极,MOS管Q2的源极连接到MOS管Q4的漏极,MOS管Q5的源极连接到MOS管Q6的漏极,MOS管Q2的源极和MOS管Q4的源极均连接到MOS管Q6的源极,开关管S3的第一端部连接到MOS管Q1的源极和MOS管Q2的漏极之间,开关管S4的第一端部连接到MOS管Q3的源极和MOS管Q4的漏极之间,开关管S5的第一端部连接到MOS管Q5的源极和MOS管Q6的漏极之间,MOS管Q1的源极、MOS管Q3的源极和MOS管Q5的源极构成开关网络的第一端口,MOS管Q5的漏极、MOS管Q6的源极、开关管S3的第二端部、开关管S4的第二端部和开关管S5的第二端部构成开关网络的第二端口;
其中,开关网络的受控端包括MOS管Q1的栅极、MOS管Q2的栅极、MOS管Q3的栅极、MOS管Q4的栅极、MOS管Q5的栅极、MOS管Q6的栅极、开关管S3的受控端、开关管S4的受控端和开关管S5的受控端。
在一个可行的实施例中,储能电路由电容C9和电容C10构成,其中,电容C9的第二端部连接到电容C10的第一端部;
储能/滤波电路的第二端口连接到开关网络的第一端口具体包括:电感L1的第二端部连接到MOS管Q1的源极和MOS管Q2的漏极之间,电感L2的第二端部连接到MOS管Q3的源极和MOS管Q4的漏极之间,电感L3的第二端部连接到MOS管Q5的源极和MOS管Q6的漏极之间;
开关网络的第二端口连接到储能电路的第一端口具体包括:MOS管Q5的漏极连接到 电容C9的第一端部,MOS管Q6的源极连接到电容C10的第二端部,开关管S3的第二端部、开关管S4的第二端部和开关管S5的第二端部均连接到电容C9的第一端部和电容C10的第二端部之间;
储能/滤波电路的第三端口连接到储能电路的第一端口具体包括:开关管S2的第二端部连接到电容C9的第二端部和电容C10的第一端部之间。
在一个可行的实施例中,第一电桥、第二电桥、第三电桥和第四电桥中的每个电桥由第一MOS管、第二MOS管、第三MOS管和第四MOS管构成,
其中,对于每个电桥,第三MOS管的漏极连接到第一MOS管的漏极,第一MOS管的源极连接到第二MOS管的漏极,第三MOS管的源极连接到第二MOS管的漏极,第四MOS管的源极连接到第二MOS管的源极;
第一谐振网络和第二谐振网络中的每个谐振网络由第一电容、第一电感、变压器、第二电感和第二电容构成,
其中,对于每个谐振网络,第一电容的第二端部通过第一电感连接到变压器初级线圈的同名端,变压器次级线圈的同名端通过第二电感连接到第二电容的第一端部;
其中,第一电桥、第二电桥、第三电桥和第四电桥中的每个电桥的受控端包括第一MOS管的栅极、第二MOS管的栅极、第三MOS管的栅极和第四MOS管的栅极。
在一个可行的实施例中,第一电桥的第二端口连接到第一谐振网络的第一端口,具体包括:第一谐振网络的第一电容的第一端部连接到第一电桥中第三MOS的源极和第四MOS管的漏极之间,和第一谐振网络的变压器的初级线圈的异名端到第一电桥中第一MOS的源极和第二MOS管的漏极之间;
第一谐振网络的第二端口连接到第二电桥的第一端口具体包括:第一谐振网络的第二电容的第二端部连接到第二电桥中第一MOS的源极和第二MOS管的漏极之间,和第一谐振网络的变压器的次级线圈的异名端到第二电桥中第三MOS的源极和第四MOS管的漏极之间;
第三电桥的第二端口连接到第二谐振网络的第一端口具体包括:第二谐振网络的第一电容的第一端部连接到第三电桥中第三MOS的源极和第四MOS管的漏极之间,和第二谐振网络的变压器的初级线圈的异名端到第三电桥中第一MOS的源极和第二MOS管的漏极之间;
第二谐振网络的第二端口连接到第四电桥的第一端口具体包括:第二谐振网络的第二电容的第二端部连接到第四电桥中第一MOS的源极和第二MOS管的漏极之间,和第二谐振网络的变压器的次级线圈的异名端到第四电桥中第三MOS的源极和第四MOS管的漏极之间。
在一个可行的实施例中,双向转换电路的第二端口连接到DCDC电路的第一端口,具体包括:
第一电桥中的第一MOS管的漏极连接到电容C9的第一端部,第一电桥中第二MOS管的源极和第三电桥中第一MOS管的漏极均连接到电容C9的第二端部和电容C10的第一端部之间,第二电桥的第二MOS管的源极连接到电容C10的第二端部。
在一个可行的实施例中,控制器控制储能/滤波电路和开关网络处于第一状态st1,具体 包括:
控制器控制储能/滤波电路中的开关管S1、开关管S2和开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5分别按照各自对应的第一预设规则断开和导通,以实现:
储能/滤波电路对从其第一端口输入的三相交流电压进行储能,并从其第二端口输出直流电压;开关网络对从其第一端口输入的直流电压进行功率变换,并从其第二端口输出变换后的直流电压;储能网络对从其第一端口输入的直流电压进行储能,并从其第二端口输出第二直流电压。
在一个可行的实施例中,控制器控制储能/滤波电路和开关网络处于第五状态st5,具体包括:
控制器控制储能/滤波电路中的开关管S1、开关管S2和开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5分别按照各自对应的第二预设规则断开和导通,以实现:
储能网络对从其第二端口输入的直流电压进行储能,并从其第一端口输出直流电压;开关网络对从其第二端口输入的直流电压进行功率变换,并从其第一端口输出变换后的直流电压;储能/滤波电路对从其第二端口输入的进行滤波,并从其第一端口输出三相交流电压。
在一个可行的实施例中,控制器控制储能/滤波电路和开关网络处于第三状态st3,具体包括:
控制器控制储能/滤波电路中的开关管S1闭合和开关管S2断开,控制开关网络中的开关管S5断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第三预设规则断开和导通,以实现:
储能/滤波电路对从其第一端口输入的单相交流电压进行储能,并从其第二端口输出直流电压;开关网络对从其第一端口输入的直流电压进行功率变换,并从其第二端口输出变换后的直流电压;储能网络对从其第一端口输入的直流电压进行储能,并从其第二端口输出第二直流电压。
在一个可行的实施例中,控制器控制储能/滤波电路和开关网络处于第六状态st6,具体包括:
控制器控制储能/滤波电路中的开关管S1闭合和开关管S2断开,控制开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第四预设规则断开和导通,以实现:
储能网络对从其第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;开关网络对从其第二端口输入的直流电压进行功率变换,并从其第一端口输出变换后的直流电压;储能/滤波电路对从其第二端口输入的电压进行滤波,并从其第一端口输出单相交流电压。
在一个可行的实施例中,控制器控制储能/滤波电路和开关网络处于第三状态st3,具体 包括:
控制器控制储能/滤波电路中的开关管S1闭合和开关管S2断开,控制开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第五预设规则断开和导通,以实现:
储能/滤波电路对从储能/滤波电路的第一端口输入的单相交流电压进行储能,并从储能/滤波电路的第二端口输出直流电压;开关网络对从该开关网络第一端口输入的直流电压进行功率变换,并从开关网络的第二端口输出变换后的直流电压;储能网络对从该储能网络第一端口输入的直流电压进行储能,并从该储能电路的第二端口输出第二直流电压。
在一个可行的实施例中,控制器控制储能/滤波电路和开关网络处于第六状态st6,具体包括:
控制器控制储能/滤波电路中的开关管S1断开和开关管S2闭合,控制开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q3、MOS管Q4、MOS管Q5和MOS管Q6均开路,并控制开关网络中的MOS管Q1和MOS管Q2分别按照对应的第六预设规则断开和导通,以实现:
储能网络对从该储能网络第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;开关网络对从该开关网络第二端口输入的直流电压进行功率变换,并从开关网络的第一端口输出变换后的直流电压;储能/滤波电路对从储能/滤波电路的第二端口输入的电压进行滤波,并从储能/滤波电路的第一端口输出单相交流电压。
在一个可行的实施例中,控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,具体包括:
控制器控制第一电桥、第二电桥、第三电桥和第四电桥中的MOS管按照第七预设规则断开和导通,以实现:
第一电桥和第三电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;第一谐振网络和第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥和第四电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压。
在一个可行的实施例中,控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,具体包括:
控制器控制第一电桥、第二电桥、第三电桥和第四电桥中的MOS管按照第八预设规则断开和导通,以实现:
第二电桥和第四电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;第一谐振网络和第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥和第三电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压。
在一个可行的实施例中,控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于 第二状态st2,具体包括:
控制器控制第三电桥中的MOS管短路和第四电桥中的MOS管开路,并控制第一电桥和第二电桥中的MOS管按照第九预设规则断开和导通,以实现:
第一电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,具体包括:
控制器控制第三电桥中的MOS管均短路和第四电桥中的MOS管均开路,并控制第一电桥和第二电桥中的MOS管按照第十预设规则断开和导通,以实现:
第二电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压。
在一个可行的实施例中,控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,具体包括:
控制器控制第一电桥中的MOS管短路和第二电桥中的MOS管开路,并控制第三电桥和第四电桥中的MOS管按照第十一预设规则断开和导通,以实现:
第三电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第四电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
控制器控制第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,具体包括:
控制器控制第一电桥中的MOS管均短路和第二电桥中的MOS管均开路,并控制第三电桥和第四电桥中的MOS管按照第十二预设规则断开和导通,以实现:
第四电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第三电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压。
第二方面,本申请实施例提供一种车载充电器,包括如第一方面所述的双向能量传输装置。
第三方面,本申请实施例提供一种电动汽车,包括如第一方面所述的双向能量传输装置或者如第二方面所述的车载充电器。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1为现有技术中的能量传输电路示意图;
图2为本申请实施例提供的一种双向能量传输装置的应用场景示意图;
图3a为本申请实施例提供的一种双向能量传输装置的结构示意图;
图3b为本申请实施例提供的另一种双向能量传输装置的结构示意图;
图4a为本申请实施例提供的一种双向转换电路的结构示意图;
图4b为本申请实施例提供的一种逆DCDC电路的结构示意图;
图5a为本申请实施例提供的一种双向能量传输电路的具体结构示意图;
图5b为本申请实施例提供的储能器件的输入输出端口示意图;
图6为本申请实施例提供的另一种双向能量传输电路的具体结构示意图;
图7为本申请实施例提供的另一种双向能量传输电路的具体结构示意图;
图8为本申请实施例提供的另一种双向能量传输电路的具体结构示意图;
图9为本申请实施例提供的另一种双向能量传输电路的具体结构示意图;
图10为本申请实施例提供的另一种双向能量传输电路的具体结构示意图;
图11为本申请实施例提供的另一种双向能量传输电路的具体结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述。
参见图2,图2为本申请实施例提供的一种应用场景示意图。如图2所示,该应用场景包括第一电动汽车200、充电桩201、第二电动汽车202和用电器203。
其中第一电动汽车200和第二电动汽车202中包含双向能量传输装置,该双向能量传输装置用于将三相交流电压转换或者单相交流电压为直流电压,或者将直流电压转换为三相交流电压或者单相交流电压。
比如上述充电桩201可以是三相交流电充电桩,或者单相交流电充电桩,可以通过上述双向能量传输装置可将三相交流电充电桩的三相交流电压或单相交流电充电桩的单相交流电压转换为直流电压,从而实现对第一电动汽车200进行充电。
再比如在第二电动汽车202电量不足或者没电,且周围没充电桩时,可通过第一电动汽车200中的双向能量传输装置将第一电动汽车200中蓄电池的直流电压转换为三相交流电压或者单相交流电压,再通过第二电动汽车202中的双向能量传输装置将三相交流电压或者单相交流电压转换为直流电压,从而实现对第二电动汽车202进行充电。
再比如,第一电动汽车200为房车,在野外时,需要使用用电器203比如电饭煲,电磁炉做饭时,可通过第一电动汽车200中的双向能量传输装置将第一电动汽车中蓄电池的直流电压转换为单相交流电压,从而实现为用电器供电。
其中,上述第一电动汽车200或第二电动汽车202可以为纯电动汽车,或者为电+其他能源的混合动力汽车。
参见图3a,图3a为本申请实施例提供一种双向能量传输装置的示意图。如图3a所示,该双向能量传输装置30包括双向能量传输电路300和控制器303,其中,控制器303的控制端303a与双向能量传输电路300的受控端300c相连接。
控制器303用于控制双向能量传输电路300处于整流工作状态,以实现将从双向能量传输电路300的第一端口300a输入的三相或单相交流电压转换为第一直流电压,并从双向能量传输电路300的第二端口300b输出,或者用于控制双向能量传输电路300处于逆变工作状态,以实现将从双向能量传输电路300的第二端口300b输入的第一直流电压转换为三相或者单相交流电压,并从双向能量传输电路的第一端口300a输出。
可选地,整流工作状态包括第一整流工作状态和第二整流工作状态,控制器303控制双向能量传输电路300处于整流工作状态,具体包括:
当检测到双向能量传输电路300的第一端口300a输入的是三相交流电压时,控制器303控制双向能量传输电路300处于第一整流工作状态,以实现将三相交流电压转换为第一直流电压,并从双向能量传输电路300的第二端口300b输出;
当检测到双向能量传输电路300的第一端口300a输入的是单相交流电压时,控制器303控制双向能量传输电路300处于第一整流工作状态,以实现将三相交流电压转换为第一直流电压,并从双向能量传输电路300的第二端口300b输出。
可选地,逆变工作状态包括第一逆变工作状态和第二逆变工作状态,控制器303控制双向能量传输电路300处于逆变工作状态,具体包括:
当检测到双向能量传输电路300的第一端口300a输出的是三相交流电压时,控制器303控制双向能量传输电路300处于第一逆变工作状态,以实现将从双向能量传输电路300的第二端口300b输入的第一直流电压转换为三相交流电压,并从双向能量传输电路300的第一端口300a输出;
当检测到双向能量传输电路300的第一端口300a输出的是单相交流电压时,控制器303控制双向能量传输电路300处于第二逆变工作状态,以实现将从双向能量传输电路300的第二端口300b输入的第一直流电压转换为单相交流电压,并从双向能量传输电路300的第一端口300a输出。
在此需要指出的是,检测双向能量传输电路300的第一端口300a输入或者输出的是三相交流电压还是单相交流电压可以通过检测双向能量传输电路300的第一端口300a所连接的接头类型;当接头类型为四孔接头时,确定双向能量传输电路300的第一端口300a输入或者输出的是三相交流电压;当接头类型为两孔接头时,确定双向能量传输电路300的第一端口300a输入或者输出的是单相相交流电压。
如图3b所示,双向能量传输电路300包括双向转换电路301和DCDC电路302,其中,双向转换电路301的第二端口301b与DCDC电路的第一端口302a连接,控制器303的控制端303a与双向能量传输电路300的受控端300c连接具体包括:控制器303的控制端303b与双向转换电路301的受控端301c和DCDC电路302的受控端302c连接。
具体地,控制器控制双向能量传输电路处于第一整流状态,具体包括:
控制器303控制双向转换电路301处于第一工作状态,以实现将从双向转换电路301的第一端口301a输入的三相交流电压转换为第二直流电压,并从双向转换电路301的第二端口301b输出,并控制DCDC电路302处于第二工作状态,以实现将从从DCDC电路302的第一端口302a输入的第二直流电压转换为第一直流电压,并从DCDC电路302的第二端口302b输出;
控制器303控制双向能量传输电路300处于第二整流状态,具体包括:
控制器303控制双向转换电路301处于第三工作状态,以实现将从双向转换电路301的第一端口301a输入的单相交流电压转换为第二直流电压,并从双向转换电路301的第二端口301b输出;并控制DCDC电路302处于第二工作状态,以实现将从DCDC电路302的第一端口302a输入的第二直流电压转换为第一直流电压,并从DCDC电路302的第二端口302b输出;其中,第一直流电压的电压值与第二直流电压的电压值不相同或相同。
具体地,控制器303控制双向能量传输电路300处于第一逆变状态,具体包括:
控制器303控制DCDC电路302处于第四工作状态,以实现将从DCDC电路302的第二端口302b输入的第一电压转换为第二直流电压,并从所DCDC电路302的第一端口302a输出;并控制双向转换电路301处于第五工作状态,以实现将从双向转换电路301的第二端口301b输入的第二直流电压转换为三相交流电压,并从双向转换电路301的第一端口301a输出;
控制器303控制双向能量传输电路处于第二逆变状态,具体包括:
控制器303控制DCDC电路302处于第四工作状态,以实现将从DCDC电路302的第二端口302b输入的第一电压转换为第二直流电压,并从DCDC电路302的第一端口302a输出;并控制双向转换电路301处于第六工作状态,以实现将从双向转换电路301的第二端口301b输入的第二直流电压转换为单相交流电压,并从双向转换电路301的第一端口301a输出。
当第一直流电压和第二直流电压相同时,DCDC电路302起到隔离的作用。
在此需要说明的是,将三相交流电压或者单相交流电压从双向转换电路301的第一端口301a输入,且从DCDC电路302的第二端口302b输出直流电压的过程称为能量正向传输过程或者整流过程;将直流电压从DCDC电路302的第二端口302b输入,且从双向转换电路301的第一端口301a输出三相交流电压或者单相交流电压的过程称为能量逆向传输过程或者逆变过程。
其中,当三相交流电压或者单相交流电压从双向转换电路301的第一端口301a输入,从双向转换电路301的第二端口301b输出直流电压时,双向转换电路301可以看成是一个PFC电路,该电路用于将交流电压转换为直流电压;当直流电压从双向转换电路301的第二端口301b输入时,从双向转换电路301的第一端口301a输出三相交流电压或单相交流电压时,双向转换电路301可以看成一个逆变电路,该电路用于将直流电压转换为三相或单相交流电压。
上述双向能量传输电路300可实现将三相或者单相交流电压转换为直流电压,或者将直流电压转换为三相或者单相交流电压。
比如双向能量传输电路300的输入380V的三相交流电压,即双向转换电路301的第一端口301a输入的是380V的三相交流电压;双向转换电路301的第二端口301b输出直流电压,该直流电压的范围为660V-1000V,比如双向转换电路301的第二端口301b输出是800V的直流电压,由于双向转换电路301的第二端口301b连接至DCDC电路302的第一端口302a,因此DCDC电路302的第一端口302a输入也是800V直流电压,DCDC电路302的第二端口302b输出直流电压的范围为200V-500V;逆向同理。
在此需要说明的是,上述直流电压的范围为660V-1000V和800V的直流电压只是一个示例,不是对本申请的限定,当然还可以是其他范围或者其他值。
双向转换电路301的第一端口301a包括A相端、B相端、C相端及N相端,当双向转换电路301的第一端口301a输入或者输出的电压是三相交流电压时,该三相交流电压通过双向转换电路301的A相端、B相端、C相端及N相端输入或者输出;当双向转换电路301的第一端口301a输入或者输出的电压是单相交流电压时,该单相交流电压通过双向转换电路301的A相端及N相端输入或者输出。
下面具体介绍上述双向转换电路301和DCDC电路302的具体结构。
如图4a所示,双向转换电路301包括储能/滤波电路3011、开关网络3012和储能电路3013。
其中,储能/滤波电路3011的第一端口3011a为双向转换电路301的第一端口301a,储能/滤波电路3011的第二端口3011b与开关网络3012的第一端口3012a连接,开关网络3012的第二端口3012b与储能电路3013的第一端口3013a连接;储能/滤波电路3011的第三端口3011c与储能电路3013的第一端口3013a连接,储能电路3013的第二端口3013b为双向转换电路301的第二端口301b,双向转换电路301的受控端301c包括储能/滤波电路3011的受控端3011d和开关网络3012的受控端3012c,也就是说控制器303的控制端303a连接到双向转换电路301的受控端301c具体是指控制器303的控制端303a连接到储能/滤波电路3011的受控端3011d和开关网络3012的受控端3012c。
如图4b所示,DCDC电路302包括储能器件、四个电桥和两个谐振网络。其中,第一电桥3021中的第二端口3021b与第一谐振网络3022的第一端口3022a连接,第一谐振网络3022的第二端口3022b与第二电桥3023的第一端口3023a连接;第三电桥3025中的第二端口3025b与第二谐振网络3026的第一端口3026a连接,第二谐振网络3026的第二端口3026b与第四电桥3027的第一端口3027a连接;第二电桥3023的第二端口3023b和第四电桥3027的第二端口3027b均与储能器件3024的第一端口3024a连接;DCDC电路302的第一端口包括第一电桥3021的第一端口3021a和第三电桥3025的第一端口3025a,DCDC电路302的第二端口302b为储能器件3024的第二端口3024b。DCDC电路302的受控端302c包括第一电桥3021的受控端3021c、第二电桥3023的受控端3023c、第三电桥3025的受控端3025c和第四电桥3027的受控端3027c,也就是说,控制器303的控制端303a与DCDC电路302的受控端302c具体是指控制器303的控制端303a与第一电桥3021的受控端3021c、第二电桥3023的受控端3023c、第三电桥3025的受控端3025c和第四电桥3027的受控端3027c相连接。
对于图4a所示的电路结构,控制器303通过其控制端303a分别向双向转换电路301中的储能/滤波电路3011和开关网路3012发送控制信号,以使双向转换电路301实现不同的电压之间的转换。
具体地,控制器303控制双向转换电路301处于第一工作状态,具体包括:
控制器303通过其控制端303a分别向储能/滤波电路3011和开关网路3012发送控制信号,控制储能/滤波电路3011和开关网路3012处于第一状态st1,以实现:
储能/滤波电路3011对从其第一端口3011a输入的三相交流电压进行储能,并从其第二 端口3011b输出直流电压;开关网络3012对从其第一端口3012a输入的直流电压进行功率变换,并从其第二端口3012b输出变换后的直流电压;储能网络3013对从其第一端口3013a输入的直流电压进行储能,并从其第二端口3013b输出第二直流电压;
控制器303控制双向转换电路301处于第三工作状态,具体包括:
控制器303控制储能/滤波电路3011和开关网络3012处于第三状态st3,以实现:
储能/滤波电路3011对从其第一端口3011a输入的单相交流电压进行储能,并从其第二端口3011b输出直流电压;开关网络3012对从其第一端口3012a输入的直流电压进行功率变换,并从其第二端口3012b输出变换后的直流电压;储能网络3013对从其第一端口3013a输入的直流电压进行储能,并从其第二端口3013b输出第二直流电压;
控制器303控制双向转换电路301处于第五工作状态,具体包括:
控制器303控制储能/滤波电路3011和开关网络处于第五状态st5,以实现:
储能网络3013对从其第二端口3013b输入的直流电压进行储能,并从其第一端口3013a输出直流电压;开关网络3012对从其第二端口3012b输入的直流电压进行功率变换,并从其第一端口3012a输出变换后的直流电压;储能/滤波电路3011对从其第二端口3011b输入的直流电压进行滤波,并从其第一端口3011a输出三相交流电压;
控制器303控制双向转换电路处于第六工作状态,具体包括:
控制器303控制储能/滤波电路3011和开关网络3012处于第六状态st6,以实现:
储能网络3013对从其第二端口3013b输入的直流电压进行储能,并从其第一端口3013a输出直流电压;开关网络3012对从其第二端口3012b输入的直流电压进行功率变换,并从其第一端口3012a输出变换后的直流电压;储能/滤波电路3011对从其第二端口3011b输入的直流电压进行滤波,并从其第一端口3011a输出单相交流电压。
对于图4b所示的电路结构,控制器303通过其控制端303a分别向DCDC电路302中的第一电桥3021、第二电桥3023、第三电桥3025和第四电桥3027发送控制信号,以控制第一电桥3021、第二电桥3023、第三电桥3025和第四电桥3027处于不同的工作状态,以使DCDC电路302实现不同的电压之间的转换。
具体地,控制器303控制DCDC电路处于第二工作状态,具体包括:
控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电桥3027处于第二状态st2,以实现:
第一电桥3021,用于对从该电桥3021的第一端口3021a输入的直流电压进行功率变换,并从该电桥3021的第二端口3021b输出功率变换后的直流电压;第一谐振网络3022,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥3023,用于对从该电桥3023的第一端口3023a输入的直流电压进行整流,并从该电桥3023的第二端口3023b输出整流后的直流电压;
和/或
第三电桥3025,用于对从该电桥的第一端口3025a输入的直流电压进行功率变换,并从该电桥3025的第二端口3025b输出功率变换后的直流电压;第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第四电桥3027,用于对从该电桥3027的第一端口3027a输入的直流电压进行整流,并从该电桥3027的第二端口3027b 输出整流后的直流电压;
其中,第二直流电压为从第一电桥3021的第一端口3021a输入的直流电压,或者为从第三电桥3025的第一端口3025a输入的直流电压,或者为从第一电桥3021的第一端口3021a输入的直流电压和从第三电桥3025的第一端口3025a输入的直流电压之和;
第一直流电压为从第二电桥3023的第二端口3023b输出的直流电压,或者为从第四电桥3027的第二端口3027b输出的直流电压,或者为从第二电桥3023的第二端口3023b输出的直流电压和从第四电桥3027的第二端口3027b输出的直流电压之和;
控制器303控制DCDC电路302处于第四工作状态,具体包括:
控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电桥3027处于第四状态st4,以实现:
第二电桥3023,用于对从该电桥3023的第二端口3023b输入的直流电压进行功率变换,并将从该电桥3023的第一端口3023a输出变换后的直流电压;第一谐振网络3022,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥3021,用于对从该电桥3021的第二端口3021b输入的直流电压进行整流,并从该电桥3021的第一端口3021a输出整流后的直流电压;
和/或
第四电桥3027,用于对从该电桥3027的第二端口3027b输入的直流电压进行功率变换,并将从该电桥3027的第一端口3027a输出功率变换后的直流电压;第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第三电桥3025,用于对从该电桥3025的第二端口3025b输入的直流电压进行整流,并从该电桥3025的第一端口3025a输出整流后的直流电压;
其中,第二直流电压为从第一电桥3021的第一端口3021a输出的直流电压,或者为从第三电桥3025的第一端口3025a输出的直流电压,或者为从第一电桥3021的第一端口3021a输出的直流电压和从第三电桥3025的第一端口3025a输出的直流电压之和;
第一直流电压为从第二电桥3023的第二端口3023b输入的直流电压,或者为从第四电桥3027的第二端口3027b输入的直流电压,或者为从第二电桥3023的第二端口3023b输入的直流电压和从第四电桥3027的第二端口3027b输入的直流电压之和。
在此需要指出的是,在此需要指出的是,第一电桥3021的第一端口3021a和第三电桥3025的第一端口3025a共同构成DCDC电路302的第一端口302a,储能器件3024的第二端口3024b为DCDC电路302的第二端口302b。双向转换电路301的第二端口301b连接到DCDC电路302的第一端口302a,具体是指双向转换电路301中的储能电路3013的第二端口连接到DCDC电路302中第一电桥3021的第一端口3021a和第二电桥3025的第一端口3025a。
具体地,如图5a所示,储能/滤波电路3011由电容C1、电容C2、电容C3、电感L1、电感L2、电感L3、开关管S1和开关管S2构成;
其中,其中,电感L1的第一端部通过电容C1连接至开关管S2的第一端部,电感L2的第一端部通过并联的电容C2和开关管S1连接到开关管S2的第一端部,电容C2和电容L3的第一端部通过电容C3连接到开关管S2的第一端部,电感L1的第一端部、电感L2 的第一端部和电感L3的第一端部分别为A相端、B相端和C相端,开关管S2的第一端部为N相端;电感L1的第二端部、电感L2的第二端部和电感L3的第二端部构成储能/滤波电路的第二端口,开关管S2的第二端部为储能/滤波电路3011的第三端口3011c;储能/滤波电路3011的受控端3011d包括开关管S1的受控端和开关管S2的受控端。
如图5a所示,开关网络3012由MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6构成、开关管S3,开关管S4和开关管S5构成;
其中,MOS管Q1的漏极和MOS管Q3的漏极均连接至MOS管Q5的漏极,MOS管Q2的源极和MOS管Q4的源极均连接至MOS管Q6的源极,MOS管Q1的源极连接至MOS管Q2的漏极,MOS管Q3的源极连接至MOS管Q4的漏极,MOS管Q5的源极连接至MOS管Q6的漏极,开关管S3的第一端部连接到MOS管Q1的源极和MOS管Q2的漏极之间,开关管S4的第一端部连接到MOS管Q3的源极和MOS管Q4的漏极之间,开关管S5的第一端部连接到MOS管Q5的源极和MOS管Q6的漏极之间,MOS管Q1的源极、MOS管Q3的源极和MOS管Q5的源极构成开关网络3012的第一端口3012a,MOS管Q5的漏极、MOS管Q6的源极、开关管S3的第二端部、开关管S4的第二端部和开关管S5的第二端部构成开关网络3012的第二端口3012b;
储能/滤波电路3011的第二端口3011b连接至开关网络3012的第一端口3012a,具体是电感L1的第二端部连接至MOS管Q1的源极和MOS管Q2的漏极之间,电感L2的第二端部连接至MOS管Q3的源极和MOS管Q4的漏极之间,电感L3的第二端部连接至MOS管Q5的源极和MOS管Q6的漏极之间。
在此需要说明的是,本申请中的开关管可以通过两个串联的MOS管实现,开关管的受控端为两个MOS管的栅极。
如图5a所示,储能电路由电容C9和电容C10构成,其中,电容C9的第二端部连接到电容C10的第一端部;
储能/滤波电路3011的第二端口3011b连接到开关网络3012的第一端口3012a具体包括:电感L1的第二端部连接到MOS管Q1的源极和MOS管Q2的漏极之间,电感L2的第二端部连接到MOS管Q3的源极和MOS管Q4的漏极之间,电感L3的第二端部连接到MOS管Q5的源极和MOS管Q6的漏极之间;
开关网络3012的第二端口3012b连接到储能电路3013的第一端口3013a具体包括:MOS管Q5的漏极连接到电容C9的第一端部,MOS管Q6的源极连接到电容C10的第二端部,开关管S3的第二端部、开关管S4的第二端部和开关管S5的第二端部均连接到电容C9的第一端部和电容C10的第二端部之间;
储能/滤波电路3011的第三端口3011c连接到储能电路3013的第一端口3013a具体包括:开关管S2的第二端部连接到电容C9的第二端部和电容C10的第一端部之间。
如图5a所示,第一电桥3021由MOS管Q7、MOS管Q8、MOS管Q9和MOS管Q10构成,其中,MOS管Q7的漏极连接至MOS管Q9的漏极,MOS管Q7的源极连接至MOS管Q8的漏极,MOS管Q9的源极连接至MOS管Q10的漏极,MOS管Q10的源极连接至MOS管Q8的源极。
第一谐振网络3022由电容C4、电感L4、变压器T1、电容C6和电感L6构成,其中, 电容C4的第二端部通过电感L4连接至变压器T1的初级线圈的同名端,变压器T1的次级线圈的同名端通过电感L6连接至电容C6的第一端部。
在此需要指出的是,第一谐振网络3022的第一端口3022a与第一电桥3021的第二端口3021b连接具体是第一谐振网络3022中的电容C4的第一端部连接到第一电桥3021中的MOS管Q9的源极与MOS管Q10的漏极之间,和第一谐振网络3022中的变压器T1的初级线圈的异名端连接至第一电桥3021的MOS管Q7的源极与MOS管Q8的漏极之间。
第二电桥由MOS管Q15、MOS管Q16、MOS管Q17和MOS管Q18构成,其中,MOS管Q15的漏极连接至MOS管Q17的漏极,MOS管Q15的源极连接至MOS管Q16的漏极,MOS管Q17的源极连接至MOS管Q18的漏极,MOS管Q16的源极连接至MOS管Q18的源极;
第一电桥3021中的MOS管Q7的栅极、MOS管Q8的栅极、MOS管Q9的栅极和MOS管Q10的栅极构成第一电桥3021的受控端3021c;第二电桥3023中的MOS管Q15的栅极、MOS管Q16的栅极、MOS管Q17的栅极和MOS管Q18的栅极构成第二电桥3023的受控端3023c。
在此需要说明的是,第一谐振网络3022的第二端口3022b与第二电桥3023的第一端口3023a连接具体是第一谐振网络3022中的电容C6的第二端部连接到第二电桥3023中的MOS管Q15的源极与MOS管Q16的漏极之间,和第一谐振网络3022中的次级线圈的异名端连接到第二电桥3023中的MOS管Q17的源极与MOS管Q18的漏极之间。
如图5a所示,第三电桥3025由MOS管Q11、MOS管Q12、MOS管Q13和MOS管Q14构成,其中,MOS管Q11的漏极连接至MOS管Q13的漏极,MOS管Q11的源极连接至MOS管Q12的漏极,MOS管Q13的源极连接至MOS管Q14的漏极,MOS管Q14的源极连接至MOS管Q12的源极。
第二谐振网络3026由电容C5、电感L5、变压器T2、电容C7和电感L7构成,其中,电容C5的第二端部连接至电感L5的第一端部,电感L5的第二端部连接至变压器T2的初级线圈的同名端,变压器T2的次级线圈的同名端连接至电感L7的第一端部,电感L7的第二端部连接至电容C7的第一端部。
在此需要指出的是,第二谐振网络3026的第一端口3026a与第二电桥3025的第二端口3025b连接具体是第二谐振网络3026中的电容C5的第一端部连接到第二电桥3025中的MOS管Q13的源极与MOS管Q14的漏极之间,和第二谐振网络3026中的变压器T2的初级线圈的异名端连接至第二电桥3025的MOS管Q11的源极与MOS管Q12的漏极之间。
第四电桥由MOS管Q19、MOS管Q20、MOS管Q21和MOS管Q22构成,其中,MOS管Q19的漏极连接至MOS管Q21的漏极,MOS管Q19的源极连接至MOS管Q20的漏极,MOS管Q21的源极连接至MOS管Q22的漏极,MOS管Q20的源极连接至MOS管Q22的源极;
第三电桥3025中的MOS管Q11的栅极、MOS管Q12的栅极、MOS管Q13的栅极和MOS管Q14的栅极构成第一电桥3025的受控端3025c;第四电桥3027中的MOS管Q19的栅极、MOS管Q20的栅极、MOS管Q21的栅极和MOS管Q22的栅极构成第一电桥3027的受控端3027c。
在此需要说明的是,第二谐振网络3026的第二端口3026b与第四电桥3027的第一端口3027a连接具体是第二谐振网络3026中的电容C7的第二端部连接到第四电桥3027中的MOS管Q19的源极与MOS管Q20的漏极之间,和第二谐振网络3026中的次级线圈的异名端连接到第四电桥3027中的MOS管Q21的源极与MOS管Q22的漏极之间。
储能电路3013的第二端口3013b连接到第一电桥3021的第一端口3021a和第三电桥3025的第一端口3025a,具体包括:
电容C9的第一端部连接到MOS管Q7的漏极,电容C10的第二端部连接到MOS管Q12的源极,MOS管Q8的源极和MOS管Q11的漏极均连接到电容C9的第二端部和电容C10的第一端部之间。
如图5a所示,储能器件3024可以为电容,比如电容C8。电容C8不仅用于储能,还用于对输入或输出的电压进行滤波。
其中,第二电桥3023的第二端口3023b连接至储能器件3024的第一端口3024a具体是第二电桥3023中的MOS管Q17的漏极和MOS管Q18的源极分别连接至电容C8的第一端部和第二端部;第四电桥3027的第二端口3027b连接至储能器件3024的第一端口3024a具体是第四电桥3027中的MOS管Q21的漏极和MOS管Q22的源极分别连接至电容C8的第一端部和第二端部。
在此需要说明的是,当储能器件3024为电容时,从储能器件3024的第一端口3024a或第二端口3024b输入电压具体是指从电容不同侧输入电压,如图5b所示。
基于图5a所示电路,具体介绍在实现不同的电压之间的转换时各元器件的工作状态。
1、三相交流电压转直流电压:
此时控制器303控制储能/滤波电路3011和开关网络3012处于第一状态st1,并控制DCDC电路处于第二状态st2,具体包括:
控制器303控制储能/滤波电路3011中的开关管S1、开关管S2和开关网络3012中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5分别按照各自对应的第一预设规则断开和导通,以实现:
储能/滤波电路3011对从其第一端口输入的三相交流电压进行储能,并从其第二端口输出直流电压;开关网络3012对从其第一端口3012a输入的直流电压进行功率变换,并从其第二端口3012b输出变换后的直流电压;储能网络3013对从其第一端口3013a输入的直流电压进行储能,并从其第二端口3013b输出第二直流电压;
并控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027桥处于第二状态st2,具体包括:
控制器控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027中的MOS管按照第七预设规则断开和导通,以实现:
第一电桥3021和第三电桥3025,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;第一谐振网络3022和第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥3023和第四电桥3027,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压。
2、直流电压转三相交流电压:
如图5a所示,此时控制器303控制器控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027处于第四状态st4,具体包括:
控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027中的MOS管按照第八预设规则断开和导通,以实现:
第二电桥3023和第四电桥3027,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;第一谐振网络3022和第二谐振3026网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥3021和第三电桥3025,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压;
并控制储能/滤波电路3011和开关网络3012处于第五状态st5,具体包括:
控制器303控制储能/滤波电路3011中的开关管S1、开关管S2和开关网络3012中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5分别按照各自对应的第二预设规则断开和导通,以实现:
储能网络3013对从其第二端口301b输入的直流电压进行储能,并从其第一端口3013a输出直流电压;开关网络3012对从其第二端口3012b输入的直流电压进行功率变换,并从其第一端口3012a输出变换后的直流电压;储能/滤波电路3011对从其第二端口3011b输入的电压进行滤波,并从其第一端口3011a输出三相交流电压。
如图5a所示的电路可实现三相交流电压-直流电压的双向转换,当能量正向流动(也就是说将三相交流电压转换为直流电压)时,三相交流电压由双向转换电路301的A相端、B相端、C相端和N相端(即从双向转换电路301的第一端口301a,也就是从储能/滤波电路3011的第一端口3011a)输入,并从DCDC电路302的第二端口Vo(也就是从储能器件3024的第二端口3024b)输出直流电压,其中,双向转换电路301为传统Vienna整流电路或者PFC电路,电容C9,电容C10上的电压为直流电压,DCDC电路302为全桥+CLLC电路。当能量逆向流动(也就是说将直流电压转换为三相交流电压)时,直流电压从DCDC电路302的第二端口Vo输入,三相交流电压从双向转换电路301的A相端、B相端、C相端和N相端输出。
在此需要说明的是,DCDC电路中的电桥(包括第一电桥、第二电桥、第三电桥和第四电桥)还可以为半桥电路或者是相关变形电路。
需要指出的是,双向转换电路和DCDC电路不限于图5a所示的结构,还可以是其他结构的双向转换电路和DCDC电路。
在实现单相交流电压-直流电压的双向转换时,图5a所示电路的部分元器件处于非工作状态。
3、单相交流电压转直流电压:
可选地,如图6所示,控制器303控制储能/滤波电路3011和开关网络3012处于第三状态st3,具体包括:
控制器303控制储能/滤波电路3011中的开关管S1闭合和开关管S2断开,控制开关网络3012中的开关管S5断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络3012 中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第三预设规则断开和导通,以实现:
储能/滤波电路3011对从其第一端口3011a输入的单相交流电压进行储能,并从其第二端口3011b输出直流电压;开关网络3012对从其第一端口3012a输入的直流电压进行功率变换,并从其第二端口3012b输出变换后的直流电压;储能网络3013对从其第一端口3013a输入的直流电压进行储能,并从其第二端口3013b输出第二直流电压;
控制器303并控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027处于第二状态st2,具体包括:
如图6所示,控制器控制第三电桥3025中的MOS管短路和第四电桥3027中的MOS管开路,并控制第一电桥和第二电桥中的MOS管按照第九预设规则断开和导通,以实现:
第一电桥3021,用于对从该电桥3021的第一端口3021a输入的直流电压进行功率变换,并从该电桥3021的第二端口3021b输出功率变换后的直流电压;第一谐振网络3022,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥3023,用于对从该电桥3023的第一端口3023a输入的直流电压进行整流,并从该电桥3023的第二端口3023b输出整流后的直流电压;
或者
如图8所示,控制第一电桥3021中的MOS管短路和第二电桥3023中的MOS管开路,并控制第三电桥和第四电桥中的MOS管按照第十一预设规则断开和导通,以实现:
第三电桥3025,用于对从该电桥3025的第一端口3025a输入的直流电压进行功率变换,并从该电桥3025的第二端口3025b输出功率变换后的直流电压;第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第四电桥3027,用于对从该电桥3027的第一端口3027a输入的直流电压进行整流,并从该电桥3027的第二端口3027b输出整流后的直流电压。
可选地,如图10所示,控制器303控制储能/滤波电路3011和开关网络3012处于第三状态st3,具体包括:
控制器303控制储能/滤波电路3011中的开关管S1闭合和开关管S2断开,控制开关网络3012中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第五预设规则断开和导通,以实现:
储能/滤波电路3011对从其第一端口3011a输入的单相交流电压进行储能,并从其第二端口3011b输出直流电压;开关网络3012对从其第一端口3012a输入的直流电压进行功率变换,并从其第二端口3012b输出变换后的直流电压;储能网络3013对从其第一端口3013a输入的直流电压进行储能,并从其第二端口3013b输出第二直流电压;
并且控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027处于第二状态st2,具体包括:
控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027中的MOS管按照第七预设规则断开和导通,以实现:
第一电桥3021和第三电桥3025,用于对从该电桥的第一端口输入的直流电压进行功 率变换,并从该电桥的第二端口输出功率变换后的直流电压;第一谐振网络3022和第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第二电桥3023和第四电桥3027,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压。
4、直流电压转单相交流电压:
可选地,控制器控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027处于第四状态st4,具体包括:
如图7所示,控制器控制第三电桥3025中的MOS管均短路和第四电桥3027中的MOS管均开路,并控制第一电桥3021和第二电桥3023中的MOS管按照第十预设规则断开和导通,以实现:
第二电桥3023,用于对从该电桥3023的第二端口3023b输入的直流电压进行功率变换,并将从该电桥3023的第一端口3023a输出变换后的直流电压;第一谐振网络3022,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥3021,用于对从该电桥3021的第二端口3021b输入的直流电压进行整流,并从该电桥3021的第一端口3021a输出整流后的直流电压;
或者,如图9所示;控制器303控制第一电桥3021中的MOS管均短路和第二电桥3023中的MOS管均开路,并控制第三电桥3025和第四电桥3027中的MOS管按照第十二预设规则断开和导通,以实现:
第四电桥3027,用于对从该电桥3027的第二端口3027b输入的直流电压进行功率变换,并将从该电桥3027的第一端口3027a输出变换后的直流电压;第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第三电桥3025,用于对从该电桥3025的第二端口3025b输入的直流电压进行整流,并从该电桥3025的第一端口3025a输出整流后的直流电压;
如图7所示,并且控制器303控制储能/滤波电路3011和开关网络3012处于第六状态st6,具体包括:
控制器303控制储能/滤波电路3011中的开关管S1闭合和开关管S2断开,控制开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第四预设规则断开和导通,以实现:
储能网络3013对从其第二端口3013b输入的直流电压进行储能,并从其第一端口3013a输出直流电压;开关网络3012对从其第二端口3012b输入的直流电压进行功率变换,并从其第一端口3012a输出变换后的直流电压;储能/滤波电路3011对从其第二端口3011b输入的电压进行滤波,并从其第一端口3011a输出单相交流电压。
可选地,如图10所示,控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027处于第四状态st4,具体包括:
控制器303控制第一电桥3021、第二电桥3023、第三电桥3025和第四电3027中的MOS管按照第八预设规则断开和导通,以实现:
第二电桥3023和第四电桥3027,用于对从该电桥的第二端口输入的直流电压进行功 率变换,并将从该电桥的第一端口输出变换后的直流电压;第一谐振网络3022和第二谐振网络3026,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;第一电桥3021和第三电桥3025,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压;
并且控制器303控制储能/滤波电路3011和开关网络处于第六状态st6,具体包括:
控制器303控制储能/滤波电路3011中的开关管S1闭合和开关管S2断开,控制开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第四预设规则断开和导通,以实现:
储能网络3013对从其第二端口3013b输入的直流电压进行储能,并从其第一端口3013a输出直流电压;开关网络3012对从其第二端口3012b输入的直流电压进行功率变换,并从其第一端口3012a输出变换后的直流电压;储能/滤波电路3011对从其第二端口3011b输入的电压进行滤波,并从其第一端口3011a输出单相交流电压;
或者如图11所示,控制器303控制储能/滤波电路3011中的开关管S1断开和开关管S2闭合,控制开关网络3012中的开关管S3、开关管S4和开关管S5均断开,MOS管Q3、MOS管Q4、MOS管Q5和MOS管Q6均开路,并控制开关网络3012中的MOS管Q1和MOS管Q2分别按照对应的第六预设规则断开和导通,以实现:
储能网络3013对从其第二端口3013b输入的直流电压进行储能,并从其第一端口3013a输出直流电压;开关网络3012对从其第二端口3012b输入的直流电压进行功率变换,并从其第一端口3012a输出变换后的直流电压;储能/滤波电路3011对从其第二端口3011b输入的电压进行滤波,并从其第一端口3011a输出单相交流电压。
在此需要指出的是,三相或单相交流电压从双向转换电路301的第一端口301a输入或输出具体是指从三相或单相交流电压从储能/滤波电路3011的第一端口3011a输入或者输出;直流电压从双向转换电路301的第二端口301b输入或者输出,具体是指从储能电路3013的第二端口3013b的第二端口输入或者输出。
在此需要说明的是,当将单相交流电压转换为直流电压时,双向转换电路301可称为PFC电路,当将直流电压转换为单相交流电压时,双向转换电路301可称为逆变电路。
换言之,在实现将单相交流电压转换为直流电压时,在双向转换电路301中通过控制器303控制开关管S1闭合,开关管S2和开关管S5断开,MOS管Q5和MOS管Q6开路之外,其他元器件正常工作;在DCDC电路302中,通过控制器303控制MOS管Q11、MOS管Q12、MOS管Q13和MOS管Q14均短路,MOS管Q19、MOS管Q20、MOS管Q21和MOS管Q22均开路之外,其他元器件均处于正常工作状态,如图6所示;
在实现将直流电压转换为单相交流电压时,在双向转换电路301中通过控制器303控制开关管S1闭合,开关管S2,开关管S3,开关管S4和开关管S5均断开,MOS管Q5和MOS管Q6开路之外,其他元器件正常工作;在DCDC电路302中,通过控制器303控制MOS管Q11、MOS管Q12、MOS管Q13和MOS管Q14均短路,MOS管Q19、MOS管Q20、MOS管Q21和MOS管Q22均开路之外,其他元器件均处于正常工作状态,如图7所示。
当能量正向流动(也就是说将单相交流电压转换为直流电压)时,如图6所示,单相交流电压由双向转换电路301的A相端和N相端输入,从DCDC电路302的第二端口Vo输出直流电压。其中,开关管S1吸合,开关管S2断开,开关管S5断开,MOS管Q5和MOS管Q6开路。电感L1,电感L2,MOS管Q1,MOS管Q2,MOS管Q3,MOS管Q4,开关管S3,开关管S4和电容C9共同组成新的双向转换电路301,此时该电路可以看成无桥PFC电路,用于将单相交流电压转换为直流电压;MOS管Q11,MOS管Q12,MOS管Q13和MOS管Q14短路,MOS管Q19、MOS管Q20,MOS管Q21和MOS管Q22开路,也就是说电容C2、电容C3、电容C10、电感L3、MOS管Q5、MOS管Q6、MOS管Q11,MOS管Q12,MOS管Q13、MOS管Q14、MOS管Q19、电容C5、电感L5、变压器T2、电感L7、电容C7、MOS管Q20、MOS管Q21和MOS管Q22不工作。MOS管Q7,MOS管Q8,MOS管Q9,MOS管Q10,电容C4,电感L4,电感T1,电感L6,电容C6,MOS管Q15,MOS管Q16,MOS管Q17,MOS管Q18,电容C8共同组成新的DCDC电路。
当能量逆向流动(也就是说将直流电压转换为单相交流电压)时,如图7所示,直流电压从DCDC电路302的第二端口Vo输入,从双向转换电路301的A相端和N相端输出单相交流电压。其中,开关管S1吸合,开关管S2和S5断开。MOS管Q7,MOS管Q8,MOS管Q9,MOS管Q10,电容C4,电感L4,变压器T1,电感L6,电容C6,MOS管Q15,MOS管Q16,MOS管Q17,MOS管Q18,电容C8共同组成新的DCDC电路,MOS管Q11,MOS管Q12,MOS管Q13,MOS管Q14短路,MOS管Q19,MOS管Q20,MOS管Q21和MOS管Q22开路,也就是MOS管Q11,MOS管Q12,MOS管Q13、MOS管Q14、电容C5、电感L5、变压器T2、电感L7、电容C7、MOS管Q19,MOS管Q20,MOS管Q21和MOS管Q22不工作;电感L3、MOS管Q5和MOS管Q6开路,电感L1,电感L2,MOS管Q1,MOS管Q2,MOS管Q3,MOS管Q4,开关管S3,开关管S4,电容C9共同组成新的双向转换电路,此时该电路可以看成一个逆变电路,用于将直流电压转换为单相交流电压。
此时,双向转换电路301的第一端口301a由A相端和N相端构成,第二端口302b由电容C9的第一端部、第二端部及MOS管Q4的源极构成;DCDC电路302的第一端口302a由MOS管Q7的漏极和MOS管Q8的源极构成,第二端口302b由电容C8的第一端部和第二端部构成。
可选地,还可以采用如图8和图9所示的具体电路实现单相交流电压-直流电压的双向换。图8和图9所示电路的具体链接关系具体可对应参见图6和图7的具体描述,在此不再叙述。
具体地,在双向转换电路301中,通过控制器303控制开关管S1闭合,开关管S2和开关管S5断开,MOS管Q5和MOS管Q6开路之外,其他元器件正常工作;在DCDC电路302中,通过控制器303控制MOS管Q7、MOS管Q8、MOS管Q9和MOS管Q10均短路,MOS管Q15、MOS管Q16、MOS管Q17和MOS管Q18均开路之外,其他元器件均处于正常工作状态,如图8所示。
在双向转换电路301中,通过控制器303控制开关管S1闭合,开关管S2,开关管S3,开关管S4和开关管S5均断开,MOS管Q5和MOS管Q6开路之外,其他元器件正常工作; 在DCDC电路302中,通过控制器303控制MOS管Q7、MOS管Q8、MOS管Q9和MOS管Q10均短路,MOS管Q15、MOS管Q16、MOS管Q17和MOS管Q18均开路之外,其他元器件均处于正常工作状态,如图9所示。
当能量正向流动(也就是说将单相交流电压转换为直流电压)时,如图8所示,单相交流电压由双向转换电路301的A相端和N相端输入,从DCDC电路302的第二端口Vo输出直流电压。其中,开关管S1吸合,开关管S2和开关管S5断开,MOS管Q5和MOS管Q6开路;电感L1,电感L2,MOS管Q1,MOS管Q2,MOS管Q3,MOS管Q4,开关管S3,开关管S4和电容C10共同组成新的双向转换电路,该电路可以看成一个PFC电路,该电路用于将单相交流电压转换为直流电压;MOS管Q7,MOS管Q8,MOS管Q9和MOS管Q10短路,MOS管Q15、MOS管Q16,MOS管Q17和MOS管Q18开路,也就是说MOS管Q7,MOS管Q8,MOS管Q9、MOS管Q10、电容C4、电感L4、变压器T1、电感L6、电容C6、MOS管Q15、MOS管Q16、MOS管Q17和MOS管Q18不工作;MOS管Q11,MOS管Q12,MOS管Q13,MOS管Q14,电容C5,电感L5,电感T2,电感L7,电容C7,MOS管Q19,MOS管Q20,MOS管Q21,MOS管Q22,电容C8共同组成新的DCDC电路。
当能量逆向流动(也就是说将直流电压转换为单相交流电压)时,如图9所示,直流电压从DCDC电路302的第二端口Vo输入,从双向转换电路302的A相端和N相端输出单相交流电压。其中,开关管S1吸合,开关管S2和S5断开;MOS管Q11,MOS管Q12,MOS管Q13,MOS管Q14,电容C5,电感L5,电感T2,电感L7,电容C7,MOS管Q19,MOS管Q20,MOS管Q21,MOS管Q22,电容C8共同组成新的DCDC电路;MOS管Q7,MOS管Q8,MOS管Q9和MOS管Q10短路,MOS管Q15、MOS管Q16,MOS管Q17和MOS管Q18均开路,也就是说MOS管Q7,MOS管Q8,MOS管Q9、MOS管Q10、电容C4、电感L4、变压器T1、电感L6、电容C6、MOS管Q15、MOS管Q16、MOS管Q17和MOS管Q18不工作;电容C2、电容C3、电容C9、电感L3、MOS管Q5和MOS管Q6开路;电感L1,电感L2,MOS管Q1,MOS管Q2,MOS管Q3,MOS管Q4,开关管S3,开关管S4,电容C10共同组成新的双向转换电路,此时该电路可以看成一个逆变电路,用于将直流电压转换为单相交流电压。
此时,双向转换电路301的第一端口301a由A相端和N相端构成,第二端口301b由电容C10第一端部、第二端部及MOS管Q3的漏极构成;DCDC电路302的第一端口302a由MOS管Q11的漏极和MOS管Q13的源极构成,第二端口302b由电容C8的第一端部和第二端部构成。
用于实现单相交流电压-直流电压双向转换的双向能量传输电路还可以其他的电路结构。如图10所示。图10所示电路是图5a所示电路中的部分器件处于非工作状态得到的,具体地,如图10所示,除了双向转换电路301中开关管S1闭合,开关管S2、开关管S3、开关管S4和开关管S5均断开,电容C2、电容C3、电感L3、MOS管Q5和MOS管Q6开路之外,双向能量传输电路中的其他元器件均处于正常工作状态。
如图10所示,当能量正向流动(也就是说将单相交流电压转换为直流电压)时,单相交流电压由双向转换电路301的A相端和N相端输入,从DCDC电路302的第二端口Vo 输出直流电压;当能量逆向流动(也就是说将直流电压转换为单相交流电压)时,直流电压从DCDC电路的第二端口Vo输入,从双向转换电路301的A相端和N相端输出单相交流电压。其中,开关管S1吸合,开关管S2,S3,S4和S5断开,MOS管Q5和MOS管Q6;电感L1开路,电感L2,MOS管Q1,MOS管Q2,MOS管Q3,MOS管Q4,电容C9,电容C10共同组成双向转换电路。当双向转换电路用于将单相交流电压转换为直流电压时,该双向转换电路可以看成一个PFC电路;当双向转换电路用于将直流电压转换为单相交流电压时,该双向转换电路可以看成一个逆变电路;
MOS管Q7,MOS管Q8,MOS管Q9,MOS管Q10,电容C4,电感L4,变压器T1,电感L6,电容C6,MOS管Q15,MOS管Q16,MOS管Q17,MOS管Q18,MOS管Q11,MOS管Q12,MOS管Q13,Q14,电容C5,电感L5,变压器T2,电感L7,电容C7,MOS管Q19,MOS管Q20,MOS管Q21,MOS管Q22,电容C8共同组成DCDC电路302。
上述新的双向转换电路和新的DCDC电路既可以实现对单相交流电压的整流,也可以实现对直流电压的逆变。
此时,双向转换电路301的第一端口301a由A相端和N相端构成,第二端口301b由电容C9的第一端部和第二端部及电容C10的第二端部构成;DCDC电路302的第一端口302a由MOS管Q7的漏极和MOS管Q13的源极构成,第二端口302b由电容C8的第一端部和第二端部构成。
在此需要说明的是,图10所示电路中DCDC电路与图6-图9所示电路中的DCDC电路多出两个全桥电路和一个CLLC电路,使得图10所示电路中DCDC电路的调压范围大于图6-图9所示电路中的DCDC电路的调压范围。
在一个可行的实施例中,在实现将直流电压转换为单相交流电压时,双向能量传输电路中的双向转换电路301还可以是其他电路结构,如图11所示。
图11所示电路是图5a所示电路中的部分器件处于非工作状态得到的,具体地,如图11所示,在双向转换电路301中,通过控制器303控制开关管S2闭合,开关管S1、开关管S3、开关管S4和开关管S5断开,MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6开路之外,双向能量传输电路300中的其他元器件均处于正常工作状态。
当能量逆向流动(也就是说将直流电压转换为单相交流电压)时,如图11所示,直流电压从DCDC电路302的第二端口Vo输入,从双向转换电路301的A相端和N相端输出单相交流电压。其中,MOS管Q7,MOS管Q8,MOS管Q9,MOS管Q10,电容C4,电感L4,变压器T1,电感L6,电容C6,MOS管Q15,MOS管Q16,MOS管Q17,MOS管Q18,MOS管Q11,MOS管Q12,MOS管Q13,Q14,电容C5,电感L5,变压器T2,电感L7,电容C7,MOS管Q19,MOS管Q20,MOS管Q21,MOS管Q22,电容C8共同组成DCDC电路;开关管S2闭合,开关管S1、开关管S3、开关管S4和开关管S5断开,MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6开路;电容C1、电感L2、MOS管Q1,MOS管Q2,电容C9,电容C10共同组成新的双向转换电路,此时该电路可以看成一个逆变电路,用于将直流电压转换为单相交流电压。
此时,双向转换电路301的第一端口301a包括A相端和N相端,第二端口301b由电 容C9的第一端部及电容C10的第一端部和第二端部构成;DCDC电路302的第一端口302a由MOS管Q7的漏极、MOS管Q8的源极和MOS管Q13的源极构成,第二端口302b由电容C8的第一端部和第二端部构成。
需要指出的是,在实现能量逆向流动时,图10和图11所示电路的差别除了开关和电感之外,图10所示电路比图11所示电路多出两个MOS管,从而使得图10所示电路的输出功率高于图11所示的电路的输出功率。
在此需要说明的是,图5a、与图6-图11所示的电路中,为了方便画图,各MOS管的栅极悬空,但在实际运用过程中,各MOS管的栅极与控制器连接,并且控制器基于导通策略向栅极输入信号,使得MOS管按照一定策略导通,从而实现整流和逆变。
可以看出,本申请提供了一种双向能量传输装置,能量正向流动时,通过控制不同开关器件的导通策略,可实现三相交流电的整流,也可以实现单相交流电整流,能量逆向流动时,可以实现直流到三相交流电逆变,也可以实现直流到单相交流的逆变,配置灵活多变,同时实现了既可以大功率充电功能。
在一个可行的实施例中,本申请实施例还提供一种车载充电器,该车载充电器包括本申请实施例公开的双向能量传输装置。
在一个可行的实施例中,本申请实施例还提供一种电动汽车,该电动汽车包括控制系统和能源系统,其中能源系统包括上述如图5a、与图6-图11任一项所述的双向能量传输装置或上述车载充电器。
以上对本申请实施例进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及其核心思想;同时,对于本领域的一般技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上上述,本说明书内容不应理解为对本申请的限制。

Claims (31)

  1. 一种双向能量传输装置,其特征在于,包括:控制器和双向转能传输电路,其中,所述控制器的控制端连接到所述双向能量传输电路的受控端;
    所述控制器,用于控制所述双向能量传输电路处于整流工作状态,以实现将从所述双向能量传输电路的第一端口输入的三相或单相交流电压转换为第一直流电压,并从所述双向能量传输电路的第二端口输出,或者,
    所述控制器,还用于控制所述双向能量传输电路处于逆变工作状态,以实现将从所述双向能量传输电路的第二端口输入的第一直流电压转换为三相或者单相交流电压,并从所述双向能量传输电路的第一端口输出。
  2. 根据权利要求1所述的装置,其特征在于,所述整流工作状态包括第一整流工作状态和第二整流工作状态,所述控制器,用于控制所述双向能量传输电路处于整流工作状态,具体包括:
    所述控制器,用于当检测到所述双向能量传输电路的第一端口输入的是三相交流电压时,控制所述双向能量传输电路处于第一整流工作状态,以实现将所述三相交流电压转换为所述第一直流电压,并从所述双向能量传输电路的第二端口输出;
    当检测到所述双向能量传输电路的第一端口输入的是单相交流电压时,控制所述双向能量传输电路处于第一整流工作状态,以实现将所述三相交流电压转换为所述第一直流电压,并从所述双向能量传输电路的第二端口输出。
  3. 根据权利要求1或2所述的装置,其特征在于,所述逆变工作状态包括第一逆变工作状态和第二逆变工作状态,所述控制器,用于控制所述双向能量传输电路处于逆变工作状态,具体包括:
    所述控制器,用于当检测到所述双向能量传输电路的第一端口输出的是三相交流电压时,控制所述双向能量传输电路处于第一逆变工作状态,以实现将从所述双向能量传输电路的第二端口输入的第一直流电压转换为所述三相交流电压,并从所述双向能量传输电路的第一端口输出;
    当检测到所述双向能量传输电路的第一端口输出的是单相交流电压时,控制所述双向能量传输电路处于第二逆变工作状态,以实现将从所述双向能量传输电路的第二端口输入的第一直流电压转换为所述单相交流电压,并从所述双向能量传输电路的第一端口输出。
  4. 根据权利要求2或3所述的装置,其特征在于,所述双向能量传输电路包括双向转换电路和直流转直流DCDC电路,其中,所述双向转换电路的第二端口连接到所述DCDC电路的第一端口,所述双向传输电路的受控端包括所述双向转换电路的受控端和所述DCDC电路的受控端;
    所述控制器控制所述双向能量传输电路处于第一整流状态,具体包括:
    所述控制器控制所述双向转换电路处于第一工作状态,以实现将从所述双向转换电路的第一端口输入的三相交流电压转换为第二直流电压,并从所述双向转换电路的第二端口 输出;并控制所述DCDC电路处于第二工作状态,以实现将从所述DCDC电路的第一端口输入的第二直流电压转换为第一直流电压,并从所述DCDC电路的第二端口输出;
    所述控制器控制所述双向能量传输电路处于第二整流状态,具体包括:
    所述控制器控制所述双向转换电路处于第三工作状态,以实现将从所述双向转换电路的第一端口输入的单相交流电压转换为第二直流电压,并从所述双向转换电路的第二端口输出;并控制所述DCDC电路处于第二工作状态,以实现将从所述DCDC电路的第一端口输入的第二直流电压转换为第一直流电压,并从所述DCDC电路的第二端口输出;
    其中,所述第一直流电压与所述第二直流电压相同或者不同。
  5. 根据权利要求4所述的装置,其特征在于,
    所述控制器控制所述双向能量传输电路处于第一逆变状态,具体包括:
    所述控制器控制所述DCDC电路处于第四工作状态,以实现将从所述DCDC电路的第二端口输入的第一电压转换为第二直流电压,并从所述DCDC电路的第一端口输出;并控制所述双向转换电路处于第五工作状态,以实现将从所述双向转换电路的第二端口输入的第二直流电压转换为三相交流电压,并从所述双向转换电路的第一端口输出;
    所述控制器控制所述双向能量传输电路处于第二逆变状态,具体包括:
    所述控制器控制所述DCDC电路处于第四工作状态,以实现将从所述DCDC电路的第二端口输入的第一电压转换为第二直流电压,并从所述DCDC电路的第一端口输出;并控制所述双向转换电路处于第六工作状态,以实现将从所述双向转换电路的第二端口输入的第二直流电压转换为单相交流电压,并从所述双向转换电路的第一端口输出。
  6. 根据权利要求4或5所述的装置,其特征在于,所述双向转换电路包括储能/滤波电路、开关网络和储能电路,
    其中,所述储能/滤波电路的第一端口为所述双向转换电路的第一端口,所述储能/滤波电路的第二端口连接到开关网络的第一端口,所述储能/滤波电路的第三端口连接到所述储能电路的第一端口,所述开关网络的第二端口连接到所述储能电路的第一端口,所述储能电路的第二端口为所述双向转换电路的第二端口;所述双向转换电路的受控端包括储能/滤波电路的受控端和开关网络的受控端,
    所述DCDC电路包括第一电桥、第二电桥、第三电桥、第四电桥、第一谐振网络、第二谐振网络和储能器件,
    其中,所述DCDC电路的第一端口包括所述第一电桥的第一端口和第三电桥的第一端口,所述第一电桥的第二端口连接到所述第一谐振网络的第一端口,所述第一谐振网络的第二端口连接到第二电桥的第一端口,所述第三电桥的第二端口连接到所述第二谐振网络的第一端口,所述第二谐振网络的第二端口连接到所述第四电桥的该电桥的第二端口,所述第二电桥的第二端口和所述第四电桥的第二端口均连接到所述储能器件的第一端口,所述DCDC电路的第二端口为所述储能器件的第二端口;所述DCDC电路的受控端包括所述第一电桥的受控端、第二电桥的受控端、第三电桥的受控端和第四电桥的受控端。
  7. 根据权利要求6所述的装置,其特征在于,所述控制器控制所述双向转换电路处于第一工作状态,具体包括:
    所述控制器控制所述储能/滤波电路和所述开关网络处于第一状态st1,以实现:
    所述储能/滤波电路对从所述储能/滤波电路的第一端口输入的三相交流电压进行储能,并从所述储能/滤波电路的第二端口输出直流电压;
    所述开关网络对从该开关网络第一端口输入的直流电压进行功率变换,并从所述开关网络的第二端口输出变换后的直流电压;
    所述储能网络对从该储能网络第一端口输入的直流电压进行储能,并从该储能电路的第二端口输出所述第二直流电压。
  8. 根据权利要求6所述的装置,其特征在于,所述控制器控制所述双向转换电路处于第三工作状态,具体包括:
    所述控制器控制所述储能/滤波电路和所述开关网络处于第三状态st3,以实现:
    所述储能/滤波电路对从所述储能/滤波电路的第一端口输入的单相交流电压进行储能,并从所述储能/滤波电路的第二端口输出直流电压;
    所述开关网络对从该开关网络第一端口输入的直流电压进行功率变换,并从所述开关网络的第二端口输出变换后的直流电压;
    所述储能网络对从该储能网络第一端口输入的直流电压进行储能,并从该储能电路的第二端口输出所述第二直流电压。
  9. 根据权利要求6所述的装置,其特征在于,所述控制器控制所述双向转换电路处于第五工作状态,具体包括:
    所述控制器控制所述储能/滤波电路和所述开关网络处于第五状态st5,以实现:
    所述储能网络对从该储能网络第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;
    所述开关网络对从该开关网络第二端口输入的直流电压进行功率变换,并从所述开关网络的第一端口输出变换后的直流电压;
    所述储能/滤波电路对从所述储能/滤波电路的第二端口输入的直流电压进行滤波,并从所述储能/滤波电路的第一端口输出三相交流电压。
  10. 根据权利要求6所述的装置,其特征在于,所述控制器控制所述双向转换电路处于第六工作状态,具体包括:
    所述控制器控制所述储能/滤波电路和所述开关网络处于第六状态st6,以实现:
    所述储能网络对从该储能网络第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;
    所述开关网络对从该开关网络第二端口输入的直流电压进行功率变换,并从所述开关网络的第一端口输出变换后的直流电压;
    所述储能/滤波电路对从所述储能/滤波电路的第二端口输入的直流电压进行滤波,并从 所述储能/滤波电路的第一端口输出单相交流电压。
  11. 根据权利要求6所述的装置,其特征在于,所述控制器控制所述DCDC电路处于第二工作状态,具体包括:
    所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,以实现:
    所述第一电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;
    所述第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第二电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
    和/或
    第三电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;
    第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    第四电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
    其中,所述第二直流电压为从所述第一电桥的第一端口输入的直流电压,或者为从所述第三电桥的第一端口输入的直流电压,或者为从所述第一电桥的第一端口输入的直流电压和从所述第三电桥的第一端口输入的直流电压之和;
    所述第一直流电压为从所述第二电桥的第二端口输出的直流电压,或者为从所述第四电桥的第二端口输出的直流电压,或者为从所述第二电桥的第二端口输出的直流电压和从所述第四电桥的第二端口输出的直流电压之和。
  12. 根据权利要求6所述的装置,其特征在于,所述控制器控制所述DCDC电路处于第四工作状态,具体包括:
    所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,以实现:
    所述第二电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;
    所述第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第一电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压;
    和/或
    所述第四电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出功率变换后的直流电压;
    所述第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第三电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的 第一端口输出整流后的直流电压;
    其中,所述第二直流电压为从所述第一电桥的第一端口输出的直流电压,或者为从所述第三电桥的第一端口输出的直流电压,或者为从所述第一电桥的第一端口输出的直流电压和从所述第三电桥的第一端口输出的直流电压之和;
    所述第一直流电压为从所述第二电桥的第二端口输入的直流电压,或者为从所述第四电桥的第二端口输入的直流电压,或者为从所述第二电桥的第二端口输入的直流电压和从所述第四电桥的第二端口输入的直流电压之和。
  13. 根据权利要求1-12任一项所述的装置,其特征在于,所述双向能量传输电路的第一端口包括A相端、B相端、C相端和N相端;
    当从所述双向能量传输电路的第一端口输入或输出的为三相交流电压时,该三相交流电压从双向能量传输电路的A相端、B相端、C相端和N相端输入或输出;
    当从所述双向能量传输电路的第一端口输入或输出的为单相交流电压时,该单相交流电压从双向能量传输电路的A相端和N相端输入或输出。
  14. 根据权利要求13所述的装置,其特征在于,所述储能/滤波电路由电容C1、电容C2、电容C3、电感L1、电感L2、电感L3、开关管S1和开关管S2构成;
    其中,所述电感L1的第一端部通过所述电容C1连接至所述开关管S2的第一端部,所述电感L2的第一端部通过并联的电容C2和开关管S1连接到所述开关管S2的第一端部,所述电容C2和所述电容L3的第一端部通过电容C3连接到所述开关管S2的第一端部,所述电感L1的第一端部、所述电感L2的第一端部和所述电感L3的第一端部分别为所述A相端、B相端和C相端,所述开关管S2的第一端部为N相端;所述电感L1的第二端部、电感L2的第二端部和电感L3的第二端部构成所述储能/滤波电路的第二端口,所述开关管S2的第二端部为所述储能/滤波电路的第三端口;
    所述储能/滤波电路的受控端包括所述开关管S1的受控端和所述开关管S2的受控端。
  15. 根据权利要求14所述的装置,其特征在于,所述开关网络由MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5构成,
    其中,所述MOS管Q1的漏极和MOS管Q3的漏极均连接到MOS管Q5的漏极,所述MOS管Q1的源极连接到MOS管Q2的漏极,所述MOS管Q2的源极连接到MOS管Q4的漏极,所述MOS管Q5的源极连接到MOS管Q6的漏极,所述MOS管Q2的源极和MOS管Q4的源极均连接到MOS管Q6的源极,所述开关管S3的第一端部连接到MOS管Q1的源极和MOS管Q2的漏极之间,所述开关管S4的第一端部连接到MOS管Q3的源极和MOS管Q4的漏极之间,所述开关管S5的第一端部连接到MOS管Q5的源极和MOS管Q6的漏极之间,所述MOS管Q1的源极、MOS管Q3的源极和MOS管Q5的源极构成所述开关网络的第一端口,所述MOS管Q5的漏极、MOS管Q6的源极、开关管S3的第二端部、开关管S4的第二端部和开关管S5的第二端部构成所述开关网络的第二端 口;
    其中,所述开关网络的受控端包括所述MOS管Q1的栅极、所述MOS管Q2的栅极、所述MOS管Q3的栅极、所述MOS管Q4的栅极、所述MOS管Q5的栅极、所述MOS管Q6的栅极、所述开关管S3的受控端、所述开关管S4的受控端和所述开关管S5的受控端。
  16. 根据权利要求15所述的装置,其特征在于,所述储能电路由电容C9和电容C10构成,其中,所述电容C9的第二端部连接到所述电容C10的第一端部;
    所述储能/滤波电路的第二端口连接到所述开关网络的第一端口具体包括:所述电感L1的第二端部连接到MOS管Q1的源极和MOS管Q2的漏极之间,所述电感L2的第二端部连接到MOS管Q3的源极和MOS管Q4的漏极之间,所述电感L3的第二端部连接到MOS管Q5的源极和MOS管Q6的漏极之间;
    所述开关网络的第二端口连接到所述储能电路的第一端口具体包括:所述MOS管Q5的漏极连接到所述电容C9的第一端部,所述MOS管Q6的源极连接到所述电容C10的第二端部,所述开关管S3的第二端部、开关管S4的第二端部和开关管S5的第二端部均连接到所述电容C9的第一端部和电容C10的第二端部之间;
    所述储能/滤波电路的第三端口连接到所述储能电路的第一端口具体包括:所述开关管S2的第二端部连接到所述电容C9的第二端部和电容C10的第一端部之间。
  17. 根据权利要求16所述的装置,其特征在于,所述第一电桥、第二电桥、第三电桥和第四电桥中的每个电桥由第一MOS管、第二MOS管、第三MOS管和第四MOS管构成,
    其中,对于每个电桥,所述第三MOS管的漏极连接到所述第一MOS管的漏极,所述第一MOS管的源极连接到所述第二MOS管的漏极,所述第三MOS管的源极连接到所述第二MOS管的漏极,所述第四MOS管的源极连接到所述第二MOS管的源极;
    所述第一谐振网络和第二谐振网络中的每个谐振网络由第一电容、第一电感、变压器、第二电感和第二电容构成,
    其中,对于每个谐振网络,所述第一电容的第二端部通过所述第一电感连接到所述变压器初级线圈的同名端,所述变压器次级线圈的同名端通过所述第二电感连接到所述第二电容的第一端部;
    其中,所述第一电桥、第二电桥、第三电桥和第四电桥中的每个电桥的受控端包括第一MOS管的栅极、第二MOS管的栅极、第三MOS管的栅极和第四MOS管的栅极。
  18. 根据权利要求17所述的装置,其特征在于,所述第一电桥的第二端口连接到所述第一谐振网络的第一端口,具体包括:所述第一谐振网络的第一电容的第一端部连接到所述第一电桥中第三MOS的源极和第四MOS管的漏极之间,和所述第一谐振网络的变压器的初级线圈的异名端到所述第一电桥中第一MOS的源极和第二MOS管的漏极之间;
    所述第一谐振网络的第二端口连接到所述第二电桥的第一端口,具体包括:所述第一谐振网络的第二电容的第二端部连接到所述第二电桥中第一MOS的源极和第二MOS管的 漏极之间,和所述第一谐振网络的变压器的次级线圈的异名端到所述第二电桥中第三MOS的源极和第四MOS管的漏极之间;
    所述第三电桥的第二端口连接到所述第二谐振网络的第一端口,具体包括:所述第二谐振网络的第一电容的第一端部连接到所述第三电桥中第三MOS的源极和第四MOS管的漏极之间,和所述第二谐振网络的变压器的初级线圈的异名端到所述第三电桥中第一MOS的源极和第二MOS管的漏极之间;
    所述第二谐振网络的第二端口连接到所述第四电桥的第一端口,具体包括:所述第二谐振网络的第二电容的第二端部连接到所述第四电桥中第一MOS的源极和第二MOS管的漏极之间,和所述第二谐振网络的变压器的次级线圈的异名端到所述第四电桥中第三MOS的源极和第四MOS管的漏极之间。
  19. 根据权利要求18所述的装置,其特征在于,所述双向转换电路的第二端口连接到所述DCDC电路的第一端口,具体包括:
    所述第一电桥中的第一MOS管的漏极连接到所述电容C9的第一端部,所述第一电桥中第二MOS管的源极和第三电桥中第一MOS管的漏极均连接到所述电容C9的第二端部和电容C10的第一端部之间,所述第二电桥的第二MOS管的源极连接到所述电容C10的第二端部。
  20. 根据权利要求19所述的装置,其特征在于,所述控制器控制所述储能/滤波电路和所述开关网络处于第一状态st1,具体包括:
    所述控制器控制所述储能/滤波电路中的开关管S1、开关管S2和所述开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5分别按照各自对应的第一预设规则断开和导通,以实现:
    所述储能/滤波电路对从所述储能/滤波电路的第一端口输入的三相交流电压进行储能,并从所述储能/滤波电路的第二端口输出直流电压;
    所述开关网络对从该开关网络第一端口输入的直流电压进行功率变换,并从所述开关网络的第二端口输出变换后的直流电压;
    所述储能网络对从该储能网络第一端口输入的直流电压进行储能,并从该储能电路的第二端口输出所述第二直流电压。
  21. 根据权利要求19所述的装置,其特征在于,所述控制器控制所述储能/滤波电路和所述开关网络处于第五状态st5,具体包括:
    所述控制器控制所述储能/滤波电路中的开关管S1、开关管S2和所述开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、MOS管Q5、MOS管Q6、开关管S3、开关管S4和开关管S5分别按照各自对应的第二预设规则断开和导通,以实现:
    所述储能网络对从该储能网络第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;
    所述开关网络对从该开关网络第二端口输入的直流电压进行功率变换,并从所述开关 网络的第一端口输出变换后的直流电压;
    所述储能/滤波电路对从所述储能/滤波电路的第二端口输入的电压进行滤波,并从所述储能/滤波电路的第一端口输出三相交流电压。
  22. 根据权利要求19所述的装置,其特征在于,所述控制器控制所述储能/滤波电路和所述开关网络处于第三状态st3,具体包括:
    所述控制器控制所述储能/滤波电路中的开关管S1闭合和开关管S2断开,控制所述开关网络中的开关管S5断开,MOS管Q5开路和MOS管Q6开路,并控制所述开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第三预设规则断开和导通,以实现:
    所述储能/滤波电路对从所述储能/滤波电路的第一端口输入的单相交流电压进行储能,并从所述储能/滤波电路的第二端口输出直流电压;
    所述开关网络对从该开关网络第一端口输入的直流电压进行功率变换,并从所述开关网络的第二端口输出变换后的直流电压;
    所述储能网络对从该储能网络第一端口输入的直流电压进行储能,并从该储能电路的第二端口输出所述第二直流电压。
  23. 根据权利要求19所述的装置,其特征在于,所述控制器控制所述储能/滤波电路和所述开关网络处于第六状态st6,具体包括:
    所述控制器控制所述储能/滤波电路中的开关管S1闭合和开关管S2断开,控制所述开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制所述开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第四预设规则断开和导通,以实现:
    所述储能网络对从该储能网络第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;
    所述开关网络对从该开关网络第二端口输入的直流电压进行功率变换,并从所述开关网络的第一端口输出变换后的直流电压;
    所述储能/滤波电路对从所述储能/滤波电路的第二端口输入的电压进行滤波,并从所述储能/滤波电路的第一端口输出单相交流电压。
  24. 根据权利要求19所述的装置,其特征在于,所述控制器控制所述储能/滤波电路和所述开关网络处于第三状态st3,具体包括:
    所述控制器控制所述储能/滤波电路中的开关管S1闭合和开关管S2断开,控制所述开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q5开路和MOS管Q6开路,并控制所述开关网络中的MOS管Q1、MOS管Q2、MOS管Q3、MOS管Q4、开关管S3和开关管SS4分别按照对应的第五预设规则断开和导通,以实现:
    所述储能/滤波电路对从所述储能/滤波电路的第一端口输入的单相交流电压进行储能,并从所述储能/滤波电路的第二端口输出直流电压;
    所述开关网络对从该开关网络第一端口输入的直流电压进行功率变换,并从所述开关网络的第二端口输出变换后的直流电压;
    所述储能网络对从该储能网络第一端口输入的直流电压进行储能,并从该储能电路的第二端口输出所述第二直流电压。
  25. 根据权利要求19所述的装置,其特征在于,所述控制器控制所述储能/滤波电路和所述开关网络处于第六状态st6,具体包括:
    所述控制器控制所述储能/滤波电路中的开关管S1断开和开关管S2闭合,控制所述开关网络中的开关管S3、开关管S4和开关管S5均断开,MOS管Q3、MOS管Q4、MOS管Q5和MOS管Q6均开路,并控制所述开关网络中的MOS管Q1和MOS管Q2分别按照对应的第六预设规则断开和导通,以实现:
    所述储能网络对从该储能网络第二端口输入的直流电压进行储能,并从该储能电路的第一端口输出直流电压;
    所述开关网络对从该开关网络第二端口输入的直流电压进行功率变换,并从所述开关网络的第一端口输出变换后的直流电压;
    所述储能/滤波电路对从所述储能/滤波电路的第二端口输入的电压进行滤波,并从所述储能/滤波电路的第一端口输出单相交流电压。
  26. 根据权利要求20、21、23、24和25任一项所述的装置,其特征在于,所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,具体包括:
    所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥中的MOS管按照第七预设规则断开和导通,以实现:
    所述第一电桥和第三电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;
    所述第一谐振网络和第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第二电桥和第四电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压。
  27. 根据权利要求20、21、23、24和25任一项所述的装置,其特征在于,所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,具体包括:
    所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥中的MOS管按照第八预设规则断开和导通,以实现:
    所述第二电桥和第四电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;
    所述第一谐振网络和第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第一电桥和第三电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并 从该电桥的第一端口输出整流后的直流电压。
  28. 根据权利要求22或23所述的装置,其特征在于,所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,具体包括:
    所述控制器控制第三电桥中的MOS管短路和第四电桥中的MOS管开路,并控制所述第一电桥和第二电桥中的MOS管按照第九预设规则断开和导通,以实现:
    所述第一电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;
    所述第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第二电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
    所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,具体包括:
    所述控制器控制第三电桥中的MOS管均短路和第四电桥中的MOS管均开路,并控制所述第一电桥和第二电桥中的MOS管按照第十预设规则断开和导通,以实现:
    所述第二电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;
    所述第一谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第一电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压。
  29. 根据权利要求22或23所述的装置,其特征在于,所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第二状态st2,具体包括:
    所述控制器控制第一电桥中的MOS管短路和第二电桥中的MOS管开路,并控制所述第三电桥和第四电桥中的MOS管按照第十一预设规则断开和导通,以实现:
    所述第三电桥,用于对从该电桥的第一端口输入的直流电压进行功率变换,并从该电桥的第二端口输出功率变换后的直流电压;
    所述第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第四电桥,用于对从该电桥的第一端口输入的直流电压进行整流,并从该电桥的第二端口输出整流后的直流电压;
    所述控制器控制所述第一电桥、第二电桥、第三电桥和第四电桥处于第四状态st4,具体包括:
    所述控制器控制第一电桥中的MOS管均短路和第二电桥中的MOS管均开路,并控制所述第三电桥和第四电桥中的MOS管按照第十二预设规则断开和导通,以实现:
    所述第四电桥,用于对从该电桥的第二端口输入的直流电压进行功率变换,并将从该电桥的第一端口输出变换后的直流电压;
    所述第二谐振网络,用于对输入的直流电压进行功率变换,并输出变换后的直流电压;
    所述第三电桥,用于对从该电桥的第二端口输入的直流电压进行整流,并从该电桥的第一端口输出整流后的直流电压。
  30. 一种车载充电器,其特征在于,包括如权利要求1-29任一项所述的双向能量传输装置。
  31. 一种电动汽车,其特征在于,所述电动汽车包括驱动控制系统和能源系统,所述能源系统包括如1-29任一项所述的双向能量传输电路或者如权利要求30所述的车载充电器。
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