WO2023029047A1 - 电池加热装置及其控制方法、控制电路和动力装置 - Google Patents

电池加热装置及其控制方法、控制电路和动力装置 Download PDF

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Publication number
WO2023029047A1
WO2023029047A1 PCT/CN2021/116735 CN2021116735W WO2023029047A1 WO 2023029047 A1 WO2023029047 A1 WO 2023029047A1 CN 2021116735 W CN2021116735 W CN 2021116735W WO 2023029047 A1 WO2023029047 A1 WO 2023029047A1
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WO
WIPO (PCT)
Prior art keywords
power battery
bridge arm
energy storage
storage element
battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/116735
Other languages
English (en)
French (fr)
Inventor
黄孝键
但志敏
侯贻真
张伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to PCT/CN2021/116735 priority Critical patent/WO2023029047A1/zh
Priority to JP2023535941A priority patent/JP7570590B2/ja
Priority to KR1020237019956A priority patent/KR20230107650A/ko
Priority to EP21955578.6A priority patent/EP4250436A4/en
Priority to CN202180048180.9A priority patent/CN115956317B/zh
Priority to CN202280004725.0A priority patent/CN115917836B/zh
Priority to PCT/CN2022/088567 priority patent/WO2023010898A1/zh
Priority to EP22851620.9A priority patent/EP4369474A4/en
Priority to JP2024507051A priority patent/JP7767579B2/ja
Priority to KR1020247004327A priority patent/KR20240031382A/ko
Publication of WO2023029047A1 publication Critical patent/WO2023029047A1/zh
Priority to US18/322,897 priority patent/US20230299374A1/en
Priority to US18/431,824 priority patent/US20240178690A1/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
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • B60L1/00Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/615Heating or keeping warm
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • 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
    • 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
    • H02J7/34Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • 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
    • H02J7/90Regulation of charging or discharging current or voltage
    • H02J7/933Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • 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
    • H02J7/90Regulation of charging or discharging current or voltage
    • H02J7/96Regulation of charging or discharging current or voltage in response to battery voltage
    • 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
    • H02J7/90Regulation of charging or discharging current or voltage
    • H02J7/971Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/975Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • 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
    • H02J7/90Regulation of charging or discharging current or voltage
    • H02J7/971Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/975Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/977Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • 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
    • H02M3/02Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145Conversion of DC power input into DC power output without intermediate conversion into AC 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
    • H02M3/155Conversion of DC power input into DC power output without intermediate conversion into AC 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
    • H02M3/156Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158Conversion of DC power input into DC power output without intermediate conversion into AC 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1582Buck-boost converters
    • 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
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/54Drive Train control parameters related to batteries
    • B60L2240/545Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00Type of vehicle
    • B60Y2200/90Vehicles comprising electric prime movers
    • B60Y2200/91Electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00Special features of vehicle units
    • B60Y2400/11Electric energy storages
    • B60Y2400/112Batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • H01M10/637Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • H02J7/80Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82Control of state of charge [SOC]
    • 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
    • H02J7/855Circuit arrangements for charging or discharging batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02M1/32Means for protecting converters other than automatic disconnection
    • H02M1/327Means for protecting converters other than automatic disconnection against abnormal temperatures
    • 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
    • H02M7/42Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53Conversion of DC power input into AC power output without 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
    • H02M7/537Conversion of DC power input into AC power output without 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, e.g. single switched pulse inverters
    • H02M7/5387Conversion of DC power input into AC power output without 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, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871Conversion of DC power input into AC power output without 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using 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
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    • 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

Definitions

  • the present application relates to the technical field of batteries, in particular to a battery heating device, a control method of the battery heating device, a control circuit and a power device of the battery heating device.
  • the traditional heating method is to use the motor to heat the power battery. Therefore, during the battery heating process, the motor cannot drive the vehicle, that is, it cannot realize driving heating.
  • Embodiments of the present application provide a battery heating device, a control method of the battery heating device, a control circuit and a power device of the battery heating device, which can realize driving heating.
  • a battery heating device which is used to connect with a power battery and heat the power battery, and the battery heating device includes:
  • a heating module including a first bridge arm, a second bridge arm and an energy storage element
  • control module configured to control the first bridge arm and the second bridge arm to form a circuit for discharging the power battery to the energy storage element and a circuit for charging the energy storage element to the power battery, In order to heat the power battery during the process of discharging and charging.
  • the battery heating device includes two bridge arms and an energy storage element. By controlling the two bridge arms, a loop for discharging the power battery to the energy storage element and a loop for the energy storage element to charge the power battery are formed.
  • the power battery is heated during discharging and charging.
  • the motor can normally drive the vehicle, thereby realizing driving heating.
  • the first end of the first bridge arm, the first end of the second bridge arm are connected to the first end of the power battery, and the second end of the first bridge arm end, the second end of the second bridge arm is connected to the second end of the power battery;
  • the first bridge arm includes a first sub-bridge arm and a second sub-bridge arm, and the second bridge arm includes a first sub-bridge arm
  • the third sub-bridge arm and the fourth sub-bridge arm, the first end of the energy storage element is connected between the first sub-bridge arm and the second sub-bridge arm, and the second end of the energy storage element is connected between the third sub-bridge arm and the fourth sub-bridge arm.
  • the first sub-bridge arm includes a first switch tube and a first freewheeling diode connected in parallel with the first switch tube;
  • the second sub-bridge arm includes a second switch tube and A second freewheeling diode connected in parallel with the second switching tube;
  • the third sub-bridge arm includes a third switching tube and a third freewheeling diode connected in parallel with the third switching tube;
  • the fourth sub-bridge arm It includes a fourth switch tube and a fourth freewheeling diode connected in parallel with the fourth switch tube.
  • control module is specifically configured to:
  • each sub-bridge arm is controlled, thereby forming a circuit for the power battery to discharge to the energy storage element, and a circuit for the energy storage element to charge the power battery.
  • the discharge circuit and the charging circuit are switched back and forth, so that the power battery and the energy storage element are repeatedly charged and discharged, and the battery is heated during the charge and discharge process.
  • the battery heating device is also connected to a charging device, and the charging device is used to charge the power battery through the battery heating device, and the control module is also used to: When the voltage of the charging device is lower than the voltage of the power battery, the first bridge arm and the second bridge arm are controlled to form a circuit in which the charging device charges the energy storage element, and the charging device and the The circuit in which the energy storage element charges the power battery at the same time; when the voltage of the charging device is higher than the voltage of the power battery, the first bridge arm and the second bridge arm are controlled to form the A circuit for charging the power battery and the energy storage element by the charging device, and a circuit for charging the power battery by the energy storage element.
  • the battery heating device has a heating mode and a charging mode at the same time, which can not only be used to heat the power battery, but also can be used as a voltage regulation unit in the process of charging the power battery by the charging device.
  • the charging device can boost charge or lower the voltage of the power battery through the battery heating device Charging, thereby improving the adaptability of the charging device and the power battery.
  • the second end of the energy storage element is connected to one end of the charging device through the fifth switch tube, the second end of the second bridge arm is connected to the other end of the charging device,
  • the charging device is used to charge the power battery through the heating module, and the control module is also used to: control the disconnection of the third sub-bridge arm; when the voltage of the charging device is lower than that of the power battery When the voltage is higher, the second switch tube and the fifth switch tube are controlled to be closed, and the first switch tube and the fourth switch tube are opened to form a charging device, the energy storage element and the
  • the circuit of the second switching tube is used for the charging device to charge the energy storage element; and, the first switching tube and the fifth switching tube are controlled to be closed, and the second switching tube and the first switching tube
  • the four switching tubes are disconnected to form a circuit including the charging device, the energy storage element, the first switching tube and the power battery, for the charging device and the energy storage element to simultaneously supply the power Charging batteries.
  • the charging device when the voltage of the charging device is lower than the voltage of the power battery, a reasonable control sequence is set to control the conduction and disconnection of each sub-bridge arm, and the charging device is formed to charge the energy storage element in each charging cycle. stage, and the stage where the charging device and the energy storage element charge the power battery at the same time.
  • the charging device charges the energy storage element
  • the power stored in the energy storage element enables the energy storage element to charge the power battery together with the charging device, thereby reducing the voltage difference between the charging device and the power battery and improving the charging efficiency. efficiency.
  • control module is further configured to: when the voltage of the charging device is higher than the voltage of the power battery, control the first switch tube and the fifth switch tube to be closed, The second switching tube and the fourth switching tube are disconnected to form a circuit including the charging device, the energy storage element, the first switching tube and the power battery, for the charging device to The power battery and the energy storage element are charged; and, the first switch tube is controlled to be closed, and the second switch tube, the fourth switch tube, and the fifth switch tube are turned off, forming the The circuit of the energy storage element, the first switching tube, the power battery and the fourth freewheeling diode is used for charging the power battery by the energy storage element.
  • a reasonable control sequence is set to control the conduction and disconnection of each sub-bridge arm, so that the charging device supplies energy to the energy storage element and the charging device in each charging cycle.
  • the phase of charging the power battery, and the phase of charging the power battery only with the energy storage element. In this way, when the charging device charges the energy storage element, the energy stored in the energy storage element enables the energy storage element to charge the power battery alone, thereby reducing the continuous charging of the power battery by the high-voltage charging device and improving charging safety.
  • the energy storage element includes an inductor; or, the energy storage element includes an inductor and a first capacitor connected in series.
  • a second capacitor is further connected in parallel to both ends of the power battery.
  • the second capacitor can realize functions such as voltage stabilization and improve the voltage stability of the power battery.
  • the power battery is also connected to the drive circuit of the motor, and is used to provide power to the drive circuit. It can be seen that when the power battery is heated by the battery heating device, the power battery can provide power to the drive circuit of the motor connected to the power battery, thereby realizing heating of the power battery during driving.
  • a method for controlling a battery heating device is provided.
  • the battery heating device is connected to a power battery for heating the power battery.
  • the battery heating device includes a first bridge arm and a second bridge arm and an energy storage element, the control method includes:
  • Control the first bridge arm and the second bridge arm to form a loop for the power battery to discharge to the energy storage element, and a loop for the energy storage element to charge the power battery, so that during discharge and charge During the process, the power battery is heated.
  • a circuit for discharging the power battery to the energy storage element and a circuit for charging the energy storage element to the power battery are formed, thus The power battery is heated during the charging process.
  • the motor can normally drive the vehicle, thereby realizing driving heating.
  • the first end of the first bridge arm, the first end of the second bridge arm are connected to the first end of the power battery, and the second end of the first bridge arm end, the second end of the second bridge arm is connected to the second end of the power battery
  • the first bridge arm includes a first sub-bridge arm and a second sub-bridge arm
  • the second bridge arm includes a first sub-bridge arm
  • the third sub-bridge arm and the fourth sub-bridge arm, the first end of the energy storage element is connected between the first sub-bridge arm and the second sub-bridge arm, and the second end of the energy storage element is connected between the third sub-bridge arm and the fourth sub-bridge arm.
  • the first sub-bridge arm includes a first switch tube and a first freewheeling diode connected in parallel with the first switch tube;
  • the second sub-bridge arm includes a second switch tube and A second freewheeling diode connected in parallel with the second switching tube;
  • the third sub-bridge arm includes a third switching tube and a third freewheeling diode connected in parallel with the third switching tube;
  • the fourth sub-bridge arm It includes a fourth switch tube and a fourth freewheeling diode connected in parallel with the fourth switch tube.
  • the controlling the first bridge arm, the second bridge arm and the power battery includes: receiving a heating request message; generating a first control signal according to the heating request message , wherein the first control signal is used for:
  • each sub-bridge arm is controlled, thereby forming a circuit for the power battery to discharge to the energy storage element, and a circuit for the energy storage element to charge the power battery.
  • the discharge circuit and the charging circuit are switched back and forth, so that the power battery and the energy storage element are repeatedly charged and discharged, and the battery is heated during the charge and discharge process.
  • control method further includes: receiving a heating stop message; generating a second control signal according to the heating stop message, where the second control signal is used to control the battery heating device Stop heating the power battery.
  • the battery heating device is also connected to a charging device, and the charging device is used to charge the power battery through the battery heating device, and the control module is also used to: When the voltage of the charging device is lower than the voltage of the power battery, the first bridge arm and the second bridge arm are controlled to form a circuit in which the charging device charges the energy storage element, and the charging device and the The circuit in which the energy storage element charges the power battery at the same time; when the voltage of the charging device is higher than the voltage of the power battery, the first bridge arm and the second bridge arm are controlled to form the A circuit for charging the power battery and the energy storage element by the charging device, and a circuit for charging the power battery by the energy storage element.
  • the battery heating device has a heating mode and a charging mode at the same time, which can not only be used to heat the power battery, but also can be used as a voltage regulation unit in the process of charging the power battery by the charging device.
  • the charging device can boost charge or lower the voltage of the power battery through the battery heating device Charging, thereby improving the adaptability of the charging device and the power battery.
  • the second end of the energy storage element is connected to one end of the charging device through the fifth switch tube, the second end of the second bridge arm is connected to the other end of the charging device,
  • the charging device is used to charge the power battery through the heating module, and the control method further includes: controlling the third sub-bridge arm to be disconnected; when the voltage of the charging device is lower than that of the power battery voltage, the second switching tube and the fifth switching tube are controlled to be closed, and the first switching tube and the fourth switching tube are disconnected to form a charging device, the energy storage element and the The circuit of the second switching tube is used for the charging device to charge the energy storage element; and, control the closing of the first switching tube and the fifth switching tube, the second switching tube and the fourth switching tube
  • the switching tube is disconnected to form a loop including the charging device, the energy storage element, the first switching tube and the power battery, for the charging device and the energy storage element to simultaneously charge the power battery Charge.
  • the charging device when the voltage of the charging device is lower than the voltage of the power battery, a reasonable control sequence is set to control the conduction and disconnection of each sub-bridge arm, and the charging device is formed to charge the energy storage element in each charging cycle. stage, and the stage where the charging device and the energy storage element charge the power battery at the same time.
  • the charging device charges the energy storage element
  • the power stored in the energy storage element enables the energy storage element to charge the power battery together with the charging device, thereby reducing the voltage difference between the charging device and the power battery and improving the charging efficiency. efficiency.
  • control method further includes: when the voltage of the charging device is higher than the voltage of the power battery, controlling the first switch tube and the fifth switch tube to be closed, so The second switching tube and the fourth switching tube are disconnected to form a circuit including the charging device, the energy storage element, the first switching tube and the power battery, for the charging device to charging the power battery and the energy storage element; and, controlling the first switch tube to be closed, and the second switch tube, the fourth switch tube, and the fifth switch tube to be turned off, forming a The loop of the energy element, the first switching tube, the power battery and the fourth freewheeling diode is used for the energy storage element to charge the power battery.
  • a reasonable control sequence is set to control the conduction and disconnection of each sub-bridge arm, so that the charging device supplies energy to the energy storage element and the charging device in each charging cycle.
  • the phase of charging the power battery, and the phase of charging the power battery only with the energy storage element. In this way, when the charging device charges the energy storage element, the energy stored in the energy storage element enables the energy storage element to charge the power battery alone, thereby reducing the continuous charging of the power battery by the high-voltage charging device and improving charging safety.
  • the energy storage element includes an inductor; or, the energy storage element includes an inductor and a first capacitor connected in series.
  • a second capacitor is further connected in parallel to both ends of the power battery.
  • the second capacitor can realize functions such as voltage stabilization and improve the voltage stability of the power battery.
  • the power battery is also connected to the drive circuit of the motor, and is used to provide power to the drive circuit. It can be seen that when the power battery is heated by the battery heating device, the power battery can provide power to the drive circuit of the motor connected to the power battery, thereby realizing heating of the power battery during driving.
  • a control circuit for a battery heating device which is characterized in that it includes a processor, and the processor is configured to execute the method in the above-mentioned second aspect or any possible implementation manner of the second aspect.
  • a power device including: a power battery; the battery heating device in the first aspect or any possible implementation of the first aspect, the battery heating device is connected to the power battery for heating the power battery; and a motor, the drive circuit of the motor is connected to the power battery, and the power battery is used to provide power to the drive circuit.
  • the motor can drive the vehicle normally to realize driving heating.
  • a circuit for the power battery to discharge to the energy storage element in the battery heating device and a circuit for the energy storage element to charge the power battery are formed, thereby Effective use of energy storage elements to achieve heating of the power battery.
  • Fig. 1 is a schematic diagram of an application scenario of a battery heating device according to an embodiment of the present application.
  • Fig. 2 is a schematic block diagram of a battery heating device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a possible implementation based on the battery heating device shown in FIG. 2 .
  • FIG. 4 is a schematic diagram of another possible implementation based on the battery heating device shown in FIG. 2 .
  • FIG. 5 is a schematic diagram of another possible implementation based on the battery heating device shown in FIG. 2 .
  • FIG. 6 is a schematic diagram of another possible implementation based on the battery heating device shown in FIG. 2 .
  • Fig. 7 is a schematic flowchart of a control method of a battery heating device according to an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a control circuit of a battery heating device according to an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of a power plant according to an embodiment of the present application.
  • the charging and discharging capacity of the power battery is greatly limited in the low temperature environment, which seriously affects the customer's car experience in winter. Therefore, in order to be able to use the power battery normally, it is necessary to heat the power battery in a low temperature environment.
  • the power battery in the embodiment of the present application may be lithium-ion battery, lithium metal battery, lead-acid battery, nickel-battery, nickel-metal hydride battery, lithium-sulfur battery, lithium-air battery or sodium-ion battery, etc., which are not limited herein.
  • the power battery in the embodiment of the present application can be a single battery cell, or a battery module or battery pack, which is not limited here.
  • the power battery can be used in power devices such as automobiles and ships. For example, it can be applied to electric vehicles to supply power to the motors of electric vehicles as the power source of electric vehicles.
  • the power battery can also supply power to other electrical devices in the electric vehicle, such as the air conditioner in the car, the car player, etc.
  • the power system is one of the core components of a power vehicle, and its driving characteristics determine the main performance indicators of the vehicle.
  • the power system of a power vehicle is mainly composed of an electric motor, a power converter, a drive circuit such as an inverter, various detection sensors, and a power supply.
  • the motor is a rotating electromagnetic machine that operates on the principle of electromagnetic induction, and is used to convert electrical energy into mechanical energy. During operation, it absorbs electric power from the electrical system and outputs mechanical power to the mechanical system.
  • the traditional way is to use the motor to heat the power battery. Therefore, during the battery heating process, the motor cannot drive the vehicle, that is, it cannot realize heating while driving, which greatly limits the battery heating scene. In addition, when the motor is used to heat the power battery, it may also cause the problem of excessive vibration and noise of the motor, thereby affecting the user's experience of using the power car. Moreover, the frequent operation of the motor will affect the service life of the motor.
  • the present application provides a solution for heating the power battery, which can realize driving heating and solve the problems of excessive motor vibration and noise and affecting the service life of the motor in the above-mentioned traditional heating method.
  • Fig. 1 shows a schematic diagram of an application scenario of a battery heating device according to an embodiment of the present application.
  • the battery heating device 110 is connected to the power battery 120 , and the battery heating device 110 is used to heat the power battery 120 .
  • the power system 130 includes, for example, a motor, etc., and the drive circuit of the motor is connected to the power battery 120.
  • the power battery 120 is used to provide power to the drive circuit of the motor, thereby ensuring the normal running of the power vehicle.
  • the battery heating device 110 heats the power battery 120 , it does not affect the normal operation of the power system 130 , so the driving heating can be realized.
  • the battery management system (Battery Management System, BMS) of the power battery 120 collects state information of the power battery 120, such as battery temperature, state of charge (State of Charge, SOC), voltage signal, current signal, etc. , and determine whether the power battery 120 needs to be heated according to the state information.
  • the BMS can send a heating request to a vehicle controller (Vehicle Control Unit, VCU).
  • VCU Vehicle Control Unit
  • the VCU may determine whether to use the battery heating device 110 to heat the power battery 120 according to the SOC of the power battery 120 .
  • the battery heating device 110 can be used to heat the power battery 120 , which does not affect the normal running of the power vehicle.
  • the battery heating device 110 may not be used to heat the power battery.
  • the motor controller such as Microprogrammed Control Unit (MCU)
  • MCU Microprogrammed Control Unit
  • the motor controller can determine the state of the motor according to the voltage and current of the motor, and send it to the VCU. Therefore, if the motor is in a normal working state at this time, the power battery 120 can be heated or kept warm by using the heat generated by the working loss of the motor, for example, heating the cooling liquid of the power battery 120 by using the heat generated by the working loss of the motor when driving, thereby The cooling liquid heats or keeps the power battery 120 warm.
  • the battery heating device 110 can be turned on to heat the power battery 120, and the length of the heating cycle of the battery heating device 110 can be adjusted, or the heating frequency of the battery heating device 110 can be adjusted.
  • the present application does not limit the usage scenarios of the battery heating device 110 , and the battery heating device 110 in the embodiment of the present application can be used to heat the power battery 120 under any necessary circumstances.
  • the BMS of the power battery 120 can also monitor whether the temperature of the power battery 120 is abnormal.
  • the BMS can send information about the abnormal temperature to the VCU, and the VCU controls the battery heating device 110 to stop heating the power battery 120. heating.
  • the power battery 120 can be heated or kept warm by using the heat generated by the working loss of the motor, for example, heating the cooling liquid of the power battery 120 by using the heat generated by the working loss of the motor, so that the power battery 120 can be heated or kept warm by the cooling liquid.
  • the VCU may control the battery heating device 110 to stop heating the power battery 120 .
  • the power battery 120 can be kept warm by using the heat generated by the motor working loss, for example, heating the cooling liquid of the power battery 120 by using the heat generated by the working loss of the motor, so that the power battery 120 can be kept warm by the cooling liquid.
  • FIG. 2 is a schematic block diagram of a battery heating device 110 according to an embodiment of the present application. As shown in FIG. 2 , the battery heating device 110 includes a heating module 1110 and a control module 1120 .
  • the heating module 1110 includes a first bridge arm 1111 , a second bridge arm 1112 and an energy storage element 1113 .
  • the energy storage element 1113 may be, for example, an inductor L, or an inductor L and a first capacitor connected in series.
  • a second capacitor C2 may also be connected in parallel to both ends of the power battery 120 .
  • the second capacitor C2 can realize functions such as voltage stabilization, reduce the voltage fluctuation of the power battery 120 , and improve the voltage stability of the power battery 120 . In this way, during the driving process, the sampling accuracy requirement of the motor controller for the battery voltage can be reduced.
  • the control module 1120 is used to control the first bridge arm 1111 and the second bridge arm 1112 to form a circuit in which the power battery 120 discharges to the energy storage element 1113, and a circuit in which the energy storage element 1113 charges the power battery 120, so that the discharge and charge During the process, the power battery is heated.
  • the control module 1120 may be a VCU, or a control module relatively independent of the VCU, for example, a control module specially set for the battery heating device 110, which is not limited in this embodiment of the present application.
  • the control module 1120 needs to control the first bridge arm 1111 and the second bridge arm 1112 in the heating module 1110, by controlling the first bridge arm 1111 and the second bridge arm
  • the conduction or disconnection of 1112 forms a circuit in which the power battery 120 discharges to the energy storage element 1113 and a circuit in which the energy storage element 1113 charges the power battery 120 .
  • the discharge circuit and the charge circuit are switched back and forth, so that the power battery 120 and the energy storage element 1113 are charged and discharged repeatedly. Due to the flow of current inside the battery during the discharge and charge process, the temperature of the battery will increase to achieve heating of the battery.
  • the first end E11 of the first bridge arm 1111, the first end of the second bridge arm 1112, and the first end of the power battery 120 are connected, and the second end E12 of the first bridge arm 1111, the second The second end E22 of the second bridge arm 1112 is connected to the second end of the power battery 120 .
  • the first bridge arm 1111 includes a first sub-bridge arm 1101 and a second sub-bridge arm 1102
  • the second bridge arm 1112 includes a third sub-bridge arm 1103 and a fourth sub-bridge arm 1104 .
  • the first end of the energy storage element 1113 is connected between the first sub-bridge arm 1101 and the second sub-bridge arm 1102, and the second end of the energy storage element 1113 is connected between the third sub-bridge arm 1103 and the fourth sub-bridge arm 1104 between.
  • the first end of the power battery 120 is the positive pole of the power battery 120, and the second end of the power battery 120 is the negative pole of the power battery 120; or, the first end of the power battery 120 is the negative pole of the power battery 120, and the The second terminal is the positive pole of the power battery 120 .
  • the control module 1120 can control the first sub-bridge arm 1101 and the fourth sub-bridge arm 1104 to be turned on at the same time, forming a Energy element 1113 and the circuit of the fourth sub-bridge arm 1104, so as to discharge the power battery to the energy storage element 1113;
  • the circuit of the second sub-bridge arm 1102 , the energy storage element 1113 and the third sub-bridge arm 1103 is used to charge the power battery 120 from the energy storage element 1113 , so as to heat the power battery 120 during discharging and charging.
  • the control electrical module 1120 can also control the second sub-bridge arm 1102 and the third sub-bridge arm 1103 to conduct simultaneously, forming a , the circuit of the energy storage element 1113 and the second sub-bridge arm 1102, which is used to discharge the power battery to the energy storage element 1113; and, control the first sub-bridge arm 1101 and the fourth sub-bridge arm 1104 to conduct simultaneously, forming a 120, the circuit of the fourth sub-bridge arm 1104, the energy storage element 1113 and the first sub-bridge arm 1101, used for the energy storage element 1113 to charge the power battery 120, so as to realize the heating of the power battery 120 in the process of discharging and charging .
  • the first sub-bridge arm 1101 may include a first switching tube V11 and a first freewheeling diode D11 connected in parallel with the first switching tube V11;
  • the bridge arm 1102 may include a second switch tube V12, and a second freewheeling diode D12 connected in parallel with the second switch tube V12;
  • the third sub-bridge arm 1103 may include a third switch tube V13, and a second switch tube V13 connected in parallel
  • the fourth sub-bridge arm 1104 may include a fourth switching transistor V14 and a fourth freewheeling diode D14 connected in parallel with the fourth switching transistor V14.
  • Freewheeling diodes are often used with inductors. When the current of the inductor changes suddenly, the voltage across the inductor will change suddenly, which may damage other components of the circuit loop. And when it cooperates with a freewheeling diode, the current of the inductor can change more smoothly, avoiding sudden changes in the voltage and improving the safety of the circuit.
  • the three freewheeling diodes D13, the fourth switching transistor V14 and the fourth freewheeling diode D14 connected in parallel thereto may all be referred to as Insulated Gate Bipolar Translator (IGBT).
  • IGBT Insulated Gate Bipolar Translator
  • the control module 1120 (not shown in FIG.
  • the switching tube V12 and the third switching tube V13 are disconnected to form a loop including the power battery 120, the first switching tube V11, the inductor L and the fourth switching tube V14, which is used to discharge the power battery 120 to the inductor L; control the first switching tube V11, the second switching tube V12, the third switching tube V13 and the fourth switching tube V14 are disconnected to form a loop including the power battery 120, the second freewheeling diode D12, the inductor L and the third freewheeling diode D13, for the inductor L charges the power battery 120 .
  • each heating cycle may include a first phase and a second phase.
  • first switch tube V11 and the fourth switch tube V14 are closed, and the second switch tube V12 and the third switch tube V13 are turned off, that is, the first sub-bridge arm 1101 and the fourth sub-bridge arm 1104 are turned on at the same time.
  • control module 1120 is also used to: control the second switching tube V12 and the third switching tube V13 to close, and the first switching tube V11 and the fourth switching tube V14 to open, forming a 120.
  • each heating cycle may include a first stage and a second stage, or a third stage and a fourth stage, or simultaneously include the first stage, the second extreme, the third stage and the fourth stage.
  • the second switch tube V12 and the third switch tube V13 are closed, and the first switch tube V11 and the fourth switch tube V14 are turned off, that is, the second sub-bridge arm 1102 and the third sub-bridge arm 1103 are turned on at the same time.
  • each sub-bridge is controlled, thereby forming a loop for the power battery 120 to discharge to the inductor L, and a loop for the inductor L to charge the power battery 120 .
  • the discharge circuit and the charge circuit are switched back and forth, so that the power battery 120 and the inductor L are charged and discharged repeatedly, so as to realize continuous heating of the battery.
  • the process of heating the power battery 120 by the battery heating device 110 of the present application is described above, that is, the heating mode of the battery heating device 110 is different from the traditional way of using a motor to heat the power battery 120.
  • the motor can run normally, so when the battery heating device works in the heating mode, it does not affect the normal running of the vehicle where the power battery 120 is located.
  • the charging device 140 includes but is not limited to a charging post or a charging machine.
  • the battery heating device 110 is connected to the charging device 140 , and the charging device 140 is used to charge the power battery 120 through the battery heating device 110 .
  • the battery heating device 110 Since the battery heating device 110 has both a heating mode and a charging mode, it can not only be used to heat the power battery 120 , but also can adjust the charging voltage when the charging device 140 is charging the power battery 120 . In this way, when the voltage of the charging device 140 does not match the voltage of the power battery 120, for example, when the voltage of the charging device 140 is lower than or higher than the voltage of the power battery 120, the charging device 140 can heat the power battery 120 through the battery heating device 110. Boost charging or step-down charging improves the adaptability of the charging device 140 and the power battery 120 .
  • the control module 1120 controls the first bridge arm 1111 and the second bridge arm 1112 to form a circuit for the charging device 140 to charge the energy storage element 1113, and the charging device 140 A circuit for charging the power battery 120 simultaneously with the energy storage element 1113 .
  • the control module 1120 controls the first bridge arm 1111 and the second bridge arm 1112 to form a circuit in which the charging device 140 charges the power battery 120 and the energy storage element 1113 , and a circuit in which the energy storage element 1113 charges the power battery 120 .
  • the energy storage element 1113 as an inductor L taking the energy storage element 1113 as an inductor L as an example, its second end is connected to one end of the charging device 140 through the fifth switch tube V15 , and the second end of the second bridge arm 1112
  • the end E22 is connected to the other end of the charging device 140 , and the charging device 140 is used to charge the power battery 120 through the battery heating device 110 .
  • the capacitor C3 in FIG. 4 may be the capacitor of the charging device 140, for example, it may function as a voltage regulator during the charging process.
  • the third switch tube V13 can also be used as a switch for mode switching.
  • the control module 1120 controls the third switch tube V13 to close; when the battery heating device 110 is in the charging mode , the control module 1120 controls the third switching tube V13 to turn off.
  • a heating cycle may only include the above-mentioned third stage and fourth stage, that is, firstly, the second switch tube V12 and the third switch tube V13 are closed at the same time, forming L and the second switching tube V12 are used to discharge the power battery 120 to the inductance L; secondly, the second switching tube V12 and the third switching tube V13 are also disconnected to form a circuit including the power battery 120, the fourth freewheeling diode D14, The loop of the inductor L and the first freewheeling diode D11 is used for the inductor L to charge the power battery 120 . At this time, the freewheeling diode D14 may not be connected to both ends of the fourth switching transistor V14.
  • a sixth switch V16 may be connected between the first end E11 of the first bridge arm 1111 and the first end E21 of the second bridge arm 1112, as a mode switching switch. In the heating mode, the sixth switch V16 is closed; and in the charging mode, the sixth switch V16 is open.
  • the control module 1120 is also used to: control the third sub-bridge arm 1103 to be disconnected, for example, the third switching tube V13 or the sixth switching tube V16 is switched off;
  • the second switch tube V12 and the fifth switch tube V15 are controlled to be closed, and the first switch tube V11 and the fourth switch tube V14 are opened to form a charging device 140 and an energy storage element 1113 and the circuit of the second switching tube V12, used for charging the energy storage element 1113 by the charging device 140; and, controlling the closing of the first switching tube V11 and the fifth switching tube V15, and the opening of the second switching tube V12 and the fourth switching tube V14 , forming a circuit including the charging device 140 , the energy storage element 1113 , the first switching tube V11 and the power battery 120 , for the charging device 140 and the energy storage element 1113 to simultaneously charge the power battery 120 .
  • the charging device 140 when the voltage of the charging device 140 is lower than the voltage of the power battery 120, by setting a reasonable control sequence to control the conduction and disconnection of each sub-bridge arm, the charging device 140 will form a charge to the energy storage in each charging cycle.
  • the first stage of charging the element 1113 , and the second stage of charging the power battery 120 simultaneously by the charging device 140 and the energy storage element 1113 .
  • a certain amount of electricity will be stored in the energy storage element 1113, so the energy storage element 1113 and the charging device 140 can jointly charge the power battery 120 in the second stage. Charging, reducing the voltage difference between the charging device 140 and the power battery 120, improving charging efficiency.
  • control module 1120 is also used for: when the voltage of the charging device 140 is higher than the voltage of the power battery 120, control the first switching tube V11 and the fifth switching tube V15 to close, and the second switching tube V12 and the fourth switching tube V14 to close.
  • Disconnect to form a circuit including the charging device 140, the energy storage element 1113, the first switch tube V11 and the power battery 120, for the charging device 140 to charge the power battery 120 and the energy storage element 1113; and, control the first switch tube V11 Closed, the second switching tube V12, the fourth switching tube V14 and the fifth switching tube V15 are disconnected to form a circuit including the energy storage element 1113, the first switching tube V11, the power battery 120 and the fourth freewheeling diode D14 for The energy storage element 1113 charges the power battery 120 .
  • the charging device 140 when the voltage of the charging device 140 is higher than the voltage of the power battery 120, by setting a reasonable control sequence to control the conduction and disconnection of each sub-bridge arm, the charging device 140 is formed to charge the energy storage in each charging cycle. The stage in which the element 1113 and the power battery 120 are charged, and the stage in which only the energy storage element 1113 charges the power battery 120 .
  • the energy storage element 1113 can absorb a part of the voltage, thus properly reducing the voltage difference between the charging device 140 and the power battery 120; on the other hand Since the voltage of the charging device 140 is greater than the voltage of the power battery 120 , in order to prevent the charging device 140 from continuously charging the power battery 120 with a high voltage, the charging device 14 and the energy storage element 1113 can alternately charge the power battery 120 . Wherein, when the charging device 140 charges the energy storage element 1113 and the power battery 120 , the energy storage element 1113 can store a certain amount of electricity, and based on this amount of electricity, the energy storage element 1113 can charge the power battery 120 alone.
  • the power battery 120 is also connected to the drive circuit 131 of the motor, and is used to provide power to the drive circuit 131 .
  • a three-phase motor is taken as an example, and its drive circuit 131 is an inverter circuit, including a bridge arm composed of a switch tube V1, a switch tube V2, a switch tube V3, a switch tube V4, a switch tube V5 and a switch tube V6, and The winding A1, the winding B1 and the winding C1 of the motor 130 are connected.
  • the power battery 120 when the power battery 120 is heated by the battery heating device 110, the power battery 120 can still provide power to the drive circuit 131 of the motor connected to the power battery 120, so as to realize heating of the power battery 120 during driving.
  • each bridge arm in the battery heating device 110 is controlled by designing a reasonable control sequence to form a circuit in which the power battery 120 discharges to the energy storage element 1113 in the battery heating device 110, and the energy storage element 1113 discharges to the power battery 120 charging circuit, so as to effectively use the energy storage element 1113 to realize the heating of the power battery.
  • the battery heating device 110 When the charging device 140 charges the power battery 120 through the battery heating device 110, the battery heating device 110 enters the charging mode. At this time, since the battery heating device 110 cannot be used to heat the power battery 120, the driving circuit 131 of the motor can be used to The power battery 120 is heated. Different from the way of heating the cooling liquid by using the heat generated by the working loss of the motor, in this case, the power battery 120 can be heated by controlling the IGBT in the driving circuit 131 to form a charging and discharging circuit.
  • the VCU can notify the motor controller to control the driving circuit 131 of the motor to heat the power battery 120, such as controlling the IGBT in the driving circuit 131 That is, the switch tubes V1 to V6 are turned on and off to heat the power battery 120 through the drive circuit 131 .
  • the battery heating device 110 may also have another mode, that is, a charging heating mode.
  • a charging heating mode When the battery heating device 110 is in the charging and heating mode, the charging device 140 charges the power 120 through the battery heating device 110 , and the driving circuit 131 of the motor heats the power battery 120 .
  • control signals of the switch tubes of each bridge arm in the drive circuit 131 can be generated by a space vector control method (Space Vector Pulse Width Modulation, SVPWM), and the control signals of the switch tubes of each bridge arm can be controlled by the control signal.
  • the on-off state causes the current flowing into the motor winding to be modulated into alternating current.
  • the direct-axis current component of the winding current can be controlled to be an alternating current
  • the quadrature-axis current component of the winding current can be controlled to be zero, so as to modulate the current of the motor winding into an alternating current.
  • any two-phase currents ia and ib collected on the three-phase connection line between the drive circuit 131 and the motor are obtained, and any two-phase currents ia and ib flow from the drive circuit 131 to the motor.
  • the motor controller transforms the collected current from the abc coordinate system to the dq coordinate system, and then decomposes in the dq coordinate system to obtain the direct axis component id and the quadrature axis component iq.
  • the quadrature-axis component iq, the direct-axis component id, the quadrature-axis signal given value i_q ⁇ *, and the direct-axis signal given value i_d ⁇ * the modulation signal of the switching tube to be turned on is obtained.
  • the quadrature axis signal given value i_q ⁇ * is equal to 0. In this way, the power battery 120 can be charged and discharged by using the motor winding to store energy.
  • the voltage output from the charging device 140 to the power battery 120 through the battery heating device 110 can be dynamically adjusted according to the voltage fluctuation during the battery heating process, reducing the impact of the battery heating process on the charging device 140 .
  • connection or “connection” mentioned in the embodiments of the present application may be a direct connection or an indirect connection, which is not limited in the present application.
  • first end E11 of the first bridge arm 1111 is connected to the first end E21 of the second bridge arm 1112.
  • One end E21 is directly electrically connected; as shown in FIG. 5 , the first end E11 of the first bridge arm 1111 and the first end E21 of the second bridge arm 1112 are connected through other components such as a switch tube V16.
  • the embodiment of the present application also provides a method for controlling a battery heating device.
  • a method for controlling a battery heating device for the structure of the battery heating device 110, reference may be made to the above specific descriptions for FIG. 1 to FIG. 5, which will not be repeated here.
  • the control method 700 of the battery heating device includes some or all of the following steps.
  • step 710 the first bridge arm and the second bridge arm are controlled to form a circuit for discharging the power battery to the energy storage element, so as to heat the power battery during the discharge process.
  • step 720 the energy storage element is used to charge the power battery, so as to heat the power battery during charging.
  • the two bridge arms in the battery heating device are controlled to form a circuit for the power battery to discharge to the energy storage element, and a circuit for the energy storage element to charge the power battery, so that in the process of discharging and charging During the process, the power battery is heated.
  • the motor can normally drive the vehicle, thereby realizing driving heating.
  • the battery heating device is also connected to a charging device, and the charging device is used to charge the power battery through the battery heating device, and the control method further includes: When the voltage is lower than the voltage of the power battery, the first bridge arm and the second bridge arm are controlled to form a circuit in which the charging device charges the energy storage element, and the charging device and the storage device The energy element can charge the power battery at the same time; when the voltage of the charging device is higher than the voltage of the power battery, the first bridge arm and the second bridge arm are controlled to form the charging device to the power battery.
  • the first end of the first bridge arm, the first end of the second bridge arm are connected to the first end of the power battery, the second end of the first bridge arm, The second end of the second bridge arm is connected to the second end of the power battery;
  • the first bridge arm includes a first sub-bridge arm and a second sub-bridge arm, and the second bridge arm includes a third sub-bridge arm bridge arm and the fourth sub-bridge arm, the first end of the energy storage element is connected between the first sub-bridge arm and the second sub-bridge arm, and the second end of the energy storage element is connected to the between the third sub-bridge arm and the fourth sub-bridge arm.
  • the first sub-bridge arm includes a first switch tube and a first freewheeling diode connected in parallel with the first switch tube;
  • the second sub-bridge arm includes a second switch tube and a first freewheeling diode connected in parallel with the first switch tube;
  • the third sub-bridge arm includes a third switching tube and a third freewheeling diode connected in parallel with the third switching tube;
  • the fourth sub-bridge arm includes a third freewheeling diode connected in parallel with the third switching tube;
  • the controlling the first bridge arm, the second bridge arm and the power battery includes: receiving a heating request message; generating a first control signal according to the heating request message, wherein , the first control signal is used for:
  • control method further includes: receiving a heating stop message; generating a second control signal according to the heating stop message, where the second control signal is used to control the battery heating device Stop heating the power battery.
  • the second end of the energy storage element is connected to one end of the charging device through the fifth switch tube, the second end of the second bridge arm is connected to the other end of the charging device, and the The charging device is used to charge the power battery through the heating module, and the controlling the first bridge arm, the second bridge arm and the power battery further includes: controlling the third sub-bridge arm to turn off Open; when the voltage of the charging device is lower than the voltage of the power battery, control the second switch tube and the fifth switch tube to be closed, and the first switch tube and the fourth switch tube to be disconnected , forming a loop including the charging device, the energy storage element, and the second switch tube, for the charging device to charge the energy storage element; and, controlling the first switch tube and the second switch tube
  • the fifth switching tube is closed, the second switching tube and the fourth switching tube are disconnected, forming a circuit including the charging device, the energy storage element, the first switching tube and the power battery, for The charging device and the energy storage element simultaneously charge the power battery.
  • controlling the first bridge arm, the second bridge arm and the power battery further includes: when the voltage of the charging device is higher than the voltage of the power battery, controlling The first switch tube and the fifth switch tube are closed, and the second switch tube and the fourth switch tube are disconnected, forming a charging device, the energy storage element, and the first switch tube. and the circuit of the power battery, used for the charging device to charge the power battery and the energy storage element; and, control the closing of the first switching tube, the second switching tube, the fourth switch tube and the fifth switch tube are disconnected to form a loop including the energy storage element, the first switch tube, the power battery and the fourth freewheeling diode, for the energy storage element to Charge the power battery.
  • the energy storage element includes an inductor; or, the energy storage element includes an inductor and a first capacitor connected in series.
  • the two ends of the power battery are further connected in parallel with a second capacitor.
  • the power battery is also connected to the driving circuit of the motor, and is used to provide power to the driving circuit.
  • Fig. 8 shows a schematic block diagram of a control circuit 800 of a battery heating device according to an embodiment of the present application.
  • the control circuit 800 includes a processor 820.
  • the control circuit 800 further includes a memory 810, wherein the memory 810 is used to store instructions, and the processor 820 is used to read the instructions and execute them based on the instructions.
  • the processor 820 may, for example, correspond to a control module of any of the above-mentioned battery heating devices.
  • Fig. 9 shows a schematic block diagram of a power device 900 according to an embodiment of the present application.
  • the power device 900 includes: a power battery 120; a battery heating device 110 in any of the above-mentioned embodiments, the battery heating device 110 is connected to the power battery 120 for heating the power battery 120; and a motor 130, a drive circuit 131 of the motor 130 and The power battery 120 is connected, and the power battery 120 is used to provide power to the driving circuit 131 .
  • the power plant 900 may be, for example, a power car.
  • the embodiment of the present application also provides a readable storage medium for storing a computer program, and the computer program is used to execute the methods in the above-mentioned embodiments of the present application.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device, such as a personal computer, a server, or a network device, execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the above-mentioned storage media include: various media that can store program codes such as U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc. .

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Abstract

一种电池加热装置(110)及其控制方法、控制电路(800)和动力装置(900)。电池加热装置(110)用于与动力电池(120)相连并对动力电池(120)进行加热,电池加热装置(110)包括:加热模块(1110),包括第一桥臂(1111)、第二桥臂(1112)和储能元件(1113);以及,控制模块(1120),用于控制第一桥臂(1111)和第二桥臂(1112),形成动力电池(120)向储能元件(1113)放电的回路、以及储能元件(1113)向动力电池(120)充电的回路,以在放电和充电的过程中对动力电池(120)进行加热。

Description

电池加热装置及其控制方法、控制电路和动力装置 技术领域
本申请涉及电池技术领域,特别是涉及一种电池加热装置、电池加热装置的控制方法、电池加热装置的控制电路和动力装置。
背景技术
由于具有能量密度高、可循环充电、安全环保等优点,动力电池被广泛应用于新能源汽车、消费电子、储能系统等领域中。
但是低温环境下动力电池的使用会受到一定限制。具体地,动力电池在低温环境下的放电容量会严重衰退,以及电池在低温环境下无法充电。因此,为了能够正常使用动力电池,需要在低温环境下为动力电池进行加热。
传统的加热方式是利用电机对动力电池进行加热,因此在电池加热的过程中,电机无法驱动车辆行驶,即无法实现行车加热。
发明内容
本申请实施例提供了一种电池加热装置、电池加热装置的控制方法、电池加热装置的控制电路和动力装置,能够实现行车加热。
第一方面,提供了一种电池加热装置,用于与动力电池相连,并对所述动力电池进行加热,所述电池加热装置包括:
加热模块,包括第一桥臂、第二桥臂和储能元件;以及,
控制模块,用于控制所述第一桥臂和所述第二桥臂,形成所述动力电池向所述储能元件放电的回路、以及所述储能元件向所述动力电池充电的回路,以在放电和充电的过程中对所述动力电池进行加热。
本申请实施例中,电池加热装置包括两个桥臂和储能元件,通过控制两个桥臂,形成动力电池向储能元件放电的回路、以及储能元件向动力电池充电的回路,从而在放电和充电的过程中对动力电池进行加热。当利用该电池加热装置对动力电池进行加热时,电机可以正常驱动车辆行驶,从而实现行车加热。
在一种可能的实现方式中,所述第一桥臂的第一端、所述第二桥臂的第一端和所述动力电池的第一端相连,所述第一桥臂的第二端、所述第二桥臂的第二端和所述动力电池的第二端相连;所述第一桥臂包括第一子桥臂和第二子桥臂,所述第二桥臂包括第三子桥臂和第四子桥臂,所述储能元件的第一端连接在所述第一子桥臂和 所述第二子桥臂之间,所述储能元件的第二端连接在所述第三子桥臂和所述第四子桥臂之间。
在一种可能的实现方式中,所述第一子桥臂包括第一开关管和与所述第一开关管并联的第一续流二极管;所述第二子桥臂包括第二开关管和与所述第二开关管并联的第二续流二极管;所述第三子桥臂包括第三开关管和与所述第三开关管并联的第三续流二极管;所述第四子桥臂包括第四开关管和与所述第四开关管并联的第四续流二极管。
在一种可能的实现方式中,所述控制模块具体用于:
控制所述第一开关管和所述第四开关管闭合,所述第二开关管和所述第三开关管断开,形成包括所述动力电池、所述第一开关管、所述储能元件和所述第四开关管的回路,用于所述动力电池向所述储能元件放电;以及,控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第二续流二极管、所述储能元件和所述第三续流二极管的回路,用于所述储能元件向所述动力电池充电;和/或,
控制所述第二开关管和所述第三开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述动力电池、所述第三开关管、所述储能元件和所述第二开关管的回路,用于所述动力电池向所述储能元件放电;以及,控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第四续流二极管、所述储能元件和所述第一续流二极管的回路,用于所述储能元件向所述动力电池充电。
该实施例中,通过设计合理的控制时序,控制各个子桥臂的导通和断开,从而形成动力电池向储能元件放电的回路、以及储能元件向动力电池充电的回路。放电回路和充电回路来回切换,从而使动力电池和储能元件之间反复进行充放电,在充放电过程中实现对电池的加热。
在一种可能的实现方式中,所述电池加热装置还与充电装置相连,所述充电装置用于通过所述电池加热装置向所述动力电池充电,所述控制模块还用于:在所述充电装置的电压低于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述储能元件充电的回路、以及所述充电装置和所述储能元件同时向所述动力电池充电的回路;在所述充电装置的电压高于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述动力电池和所述储能元件充电的回路、以及所述储能元件向所述动力电池充电的回路。
在本申请实施例中,电池加热装置同时具有加热模式和充电模式,其不仅可以用来对动力电池进行加热,还可以充当电压调节单元应用在充电装置向动力电池充电的过程中。这样,当充电装置的电压与动力电池的电压不匹配时,例如充电装置的电压低于或者高于动力电池的电压时,充电装置可以通过该电池加热装置对动力电池进行升压充电或者降压充电,从而提高充电装置和动力电池的适配性。
在一种可能的实现方式中,所述储能元件的第二端通过第五开关管与充电装置的一端连接,所述第二桥臂的第二端与所述充电装置的另一端连接,所述充电装 置用于通过所述加热模块向所述动力电池充电,所述控制模块还用于:控制所述第三子桥臂断开;在所述充电装置的电压低于所述动力电池的电压时,控制所述第二开关管和所述第五开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件和所述第二开关管的回路,用于所述充电装置对所述储能元件充电;以及,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置和所述储能元件同时向所述动力电池充电。
该实施例中,充电装置的电压低于动力电池的电压时,通过设置合理的控制时序,控制各个子桥臂的导通和断开,在每个充电周期中形成充电装置向储能元件充电的阶段、以及充电装置和储能元件同时向动力电池充电的阶段。这样,充电装置向储能元件充电时储能元件中存储的电量,使得储能元件能够与充电装置一起,共同向动力电池充电,从而减小充电装置和动力电池之间的电压差异,提高充电效率。
在一种可能的实现方式中,所述控制模块还用于:在所述充电装置的电压高于所述动力电池的电压时,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置向所述动力电池和所述储能元件充电;以及,控制所述第一开关管闭合,所述第二开关管、所述第四开关管和所述第五开关管断开,形成包括所述储能元件、所述第一开关管、所述动力电池和所述第四续流二极管的回路,用于所述储能元件向所述动力电池充电。
该实施例中,充电装置的电压高于动力电池的电压时,通过设置合理的控制时序,控制各个子桥臂的导通和断开,在每个充电周期中形成充电装置向储能元件和动力电池充电的阶段、以及仅储能元件向动力电池充电的阶段。这样,充电装置向储能元件充电时储能元件中存储的电量,使得储能元件能够单独向动力电池充电,从而减小大电压的充电装置对动力电池的持续充电,提高充电安全性。
在一种可能的实现方式中,所述储能元件包括电感;或者,所述储能元件包括串联的电感和第一电容。
在一种可能的实现方式中,所述动力电池的两端还并联有第二电容。该第二电容可以实现稳压等功能,提高动力电池的电压稳定性。
在一种可能的实现方式中,所述动力电池还与电机的驱动电路相连,用于向所述驱动电路提供电源。可见,在利用电池加热装置对动力电池加热时,动力电池可以向与动力电池相连的电机的驱动电路提供电源,从而实现在行车过程中对动力电池的加热。
第二方面,提供了一种电池加热装置的控制方法,所述电池加热装置与动力电池相连,用于对所述动力电池进行加热,所述电池加热装置包括第一桥臂、第二桥臂和储能元件,所述控制方法包括:
控制所述第一桥臂和所述第二桥臂,形成所述动力电池向所述储能元件放电的回路、以及所述储能元件向所述动力电池充电的回路,以在放电和充电的过程中对所述动力电池进行加热。
在本申请实施例中,通过设计合理的控制时序,控制电池加热装置中的两个桥臂,形成动力电池向储能元件放电的回路、以及储能元件向动力电池充电的回路,从而在放电和充电的过程中对动力电池进行加热。当利用该电池加热装置对动力电池进行加热时,电机可以正常驱动车辆行驶,从而实现行车加热。
在一种可能的实现方式中,所述第一桥臂的第一端、所述第二桥臂的第一端和所述动力电池的第一端相连,所述第一桥臂的第二端、所述第二桥臂的第二端和所述动力电池的第二端相连,所述第一桥臂包括第一子桥臂和第二子桥臂,所述第二桥臂包括第三子桥臂和第四子桥臂,所述储能元件的第一端连接在所述第一子桥臂和所述第二子桥臂之间,所述储能元件的第二端连接在所述第三子桥臂和所述第四子桥臂之间。
在一种可能的实现方式中,所述第一子桥臂包括第一开关管和与所述第一开关管并联的第一续流二极管;所述第二子桥臂包括第二开关管和与所述第二开关管并联的第二续流二极管;所述第三子桥臂包括第三开关管和与所述第三开关管并联的第三续流二极管;所述第四子桥臂包括第四开关管和与所述第四开关管并联的第四续流二极管。
在一种可能的实现方式中,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,包括:接收加热请求消息;根据所述加热请求消息,生成第一控制信号,其中,所述第一控制信号用于:
控制所述第一开关管和所述第四开关管闭合,所述第二开关管和所述第三开关管断开,形成包括所述动力电池、所述第一开关管、所述储能元件和所述第四开关管的回路,用于所述动力电池向所述储能元件放电;以及,控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第二续流二极管、所述储能元件和所述第三续流二极管的回路,用于所述储能元件向所述动力电池充电;和/或,
控制所述第二开关管和所述第三开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述动力电池、所述第三开关管、所述储能元件和所述第二开关管的回路,用于所述动力电池向所述储能元件放电;以及,控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第四续流二极管、所述储能元件和所述第一续流二极管的回路,用于所述储能元件向所述动力电池充电。
该实施例中,通过设计合理的控制时序,控制各个子桥臂的导通和断开,从而形成动力电池向储能元件放电的回路、以及储能元件向动力电池充电的回路。放电回路和充电回路来回切换,从而使动力电池和储能元件之间反复进行充放电,在充放电过程中实现对电池的加热。
在一种可能的实现方式中,所述控制方法还包括:接收加热停止消息;根据所述加热停止消息,生成第二控制信号,其中,所述第二控制信号用于控制所述电池加热装置停止对所述动力电池加热。
在一种可能的实现方式中,所述电池加热装置还与充电装置相连,所述充电装置用于通过所述电池加热装置向所述动力电池充电,所述控制模块还用于:在所述充电装置的电压低于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述储能元件充电的回路、以及所述充电装置和所述储能元件同时向所述动力电池充电的回路;在所述充电装置的电压高于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述动力电池和所述储能元件充电的回路、以及所述储能元件向所述动力电池充电的回路。
在本申请实施例中,电池加热装置同时具有加热模式和充电模式,其不仅可以用来对动力电池进行加热,还可以充当电压调节单元应用在充电装置向动力电池充电的过程中。这样,当充电装置的电压与动力电池的电压不匹配时,例如充电装置的电压低于或者高于动力电池的电压时,充电装置可以通过该电池加热装置对动力电池进行升压充电或者降压充电,从而提高充电装置和动力电池的适配性。
在一种可能的实现方式中,所述储能元件的第二端通过第五开关管与充电装置的一端连接,所述第二桥臂的第二端与所述充电装置的另一端连接,所述充电装置用于通过所述加热模块向所述动力电池充电,所述控制方法还包括:控制所述第三子桥臂断开;在所述充电装置的电压低于所述动力电池的电压时,控制所述第二开关管和所述第五开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件和所述第二开关管的回路,用于所述充电装置对所述储能元件充电;以及,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置和所述储能元件同时向所述动力电池充电。
该实施例中,充电装置的电压低于动力电池的电压时,通过设置合理的控制时序,控制各个子桥臂的导通和断开,在每个充电周期中形成充电装置向储能元件充电的阶段、以及充电装置和储能元件同时向动力电池充电的阶段。这样,充电装置向储能元件充电时储能元件中存储的电量,使得储能元件能够与充电装置一起,共同向动力电池充电,从而减小充电装置和动力电池之间的电压差异,提高充电效率。
在一种可能的实现方式中,所述控制方法还包括:在所述充电装置的电压高于所述动力电池的电压时,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置向所述动力电池和所述储能元件充电;以及,控制所述第一开关管闭合,所述第二开关管、所述第四开关管和所述第五开关管断开,形成包括所述储能元件、所述第一开关管、所述动力电池和所述第四续流二极管的回路,用于所述储能元件向所述动力电池充电。
该实施例中,充电装置的电压高于动力电池的电压时,通过设置合理的控制时序,控制各个子桥臂的导通和断开,在每个充电周期中形成充电装置向储能元件和动力电池充电的阶段、以及仅储能元件向动力电池充电的阶段。这样,充电装置向储能元件充电时储能元件中存储的电量,使得储能元件能够单独向动力电池充电,从而减小大电压的充电装置对动力电池的持续充电,提高充电安全性。
在一种可能的实现方式中,所述储能元件包括电感;或者,所述储能元件包括串联的电感和第一电容。
在一种可能的实现方式中,所述动力电池的两端还并联有第二电容。该第二电容可以实现稳压等功能,提高动力电池的电压稳定性。
在一种可能的实现方式中,所述动力电池还与电机的驱动电路相连,用于向所述驱动电路提供电源。可见,在利用电池加热装置对动力电池加热时,动力电池可以向与动力电池相连的电机的驱动电路提供电源,从而实现在行车过程中对动力电池的加热。
第三方面,提供了一种电池加热装置的控制电路,其特征在于,包括处理器,所述处理器用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第四方面,提供了一种动力装置,包括:动力电池;上述第一方面或第一方面的任意可能的实现方式中的电池加热装置,所述电池加热装置与所述动力电池相连,用于对所述动力电池进行加热;以及,电机,所述电机的驱动电路与所述动力电池相连,所述动力电池用于向所述驱动电路提供电源。
基于上述技术方案,通过设置额外的电池加热装置,使得利用该电池加热装置对动力电池进行加热时,电机可以正常驱动车辆行驶,实现行车加热。具体地,通过设计合理的控制时序对电池加热装置中的各个桥臂进行控制,形成动力电池向电池加热装置中的储能元件放电的回路,以及该储能元件向动力电池充电的回路,从而有效利用储能元件,实现对动力电池的加热。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对本申请实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据附图获得其他的附图。
图1是本申请实施例的电池加热装置的应用场景的示意图。
图2是本申请实施例的电池加热装置的示意性框图。
图3是基于图2所示的电池加热装置的一种可能的实现方式的示意图。
图4是基于图2所示的电池加热装置的另一种可能的实现方式的示意图。
图5是基于图2所示的电池加热装置的另一种可能的实现方式的示意图。
图6是基于图2所示的电池加热装置的另一种可能的实现方式的示意图。
图7是本申请实施例的电池加热装置的控制方法的示意性流程图。
图8是本申请实施例的电池加热装置的控制电路的示意性框图。
图9是本申请实施例的动力装置的示意性框图。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理,但不能用来限制本申请的范围,即本申请不限于所描述的实施例。
在本申请的描述中,需要说明的是,除非另有说明,“多个”的含义是两个以上;术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。此外,术语“第一”、“第二”、“第三”等仅用于描述目的,而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直,而是在误差允许范围之内。“平行”并不是严格意义上的平行,而是在误差允许范围之内。
下述描述中出现的方位词均为图中示出的方向,并不是对本申请的具体结构进行限定。在本申请的描述中,还需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可视具体情况理解上述术语在本申请中的具体含义。
随着时代的发展,新能源汽车由于其环保性、低嗓音、使用成本低等优点,具有巨大的市场前景且能够有效促进节能减排,有利于社会的发展和进步。
由于动力电池的电化学特性,在低温环境下,动力电池的充放电能力被大大限制,严重影响客户冬季用车体验。因此,为了能够正常使用动力电池,需要在低温环境下为动力电池进行加热。
本申请实施例中的动力电池可以为锂离子电池、锂金属电池、铅酸电池、镍隔电池、镍氢电池、锂硫电池、锂空气电池或者钠离子电池等,在此不做限定。从规模而言,本申请实施例中的动力电池可以为电芯单体,也可以是电池模组或电池包,在此不做限定。从应用场景而言,该动力电池可应用于汽车、轮船等动力装置内。例如,可以应用于动力汽车,以为动力汽车的电机供电,作为电动汽车的动力源。该动力电池还可为电动汽车中的其他用电器件供电,比如为车内空调、车载播放器等供电。
为了便于描述,以下将以动力电池应用于新能源汽车(即动力汽车、或称电动汽车)为例,对本申请的方案进行阐述。
动力系统是动力汽车的核心部件之一,其驱动特性决定了汽车行驶的主要性能指标。动力汽车的动力系统主要由电动机即电机、功率转换器、驱动电路例如逆变器、各种检测传感器以及电源等部分构成。电机是应用电磁感应原理运行的旋转电磁机械,用于实现电能向机械能的转换。运行时从电系统吸收电功率,向机械系统输出机械功率。
传统方式是利用电机对动力电池进行加热,因此在电池加热的过程中,电机无法驱动车辆行驶,即无法实现边行车边加热,极大地限制了电池加热的场景。另外,在利用电机对动力电池进行加热时,还可能导致电机振动噪声过大的问题,从而影响用户对动力汽车的使用体验。并且,电机的频繁运转会影响电机的使用寿命。
为此,本申请提供了一种对动力电池加热的方案,能够实现行车加热,并解决上述传统加热方法中的电机振动噪声过大和影响电机使用寿命受的问题。
图1示出了本申请实施例的电池加热装置的应用场景的示意图。如图1所示,电池加热装置110与动力电池120连接,电池加热装置110用于对动力电池120加热。动力系统130例如包括电机等,电机的驱动电路与动力电池120连接,动力电池120用于向电机的驱动电路提供电源,从而保证动力汽车的正常行驶。在本申请实施例中,电池加热装置110对动力电池120进行加热时,不影响动力系统130的正常工作,因此可以实现行车加热。
在一种实现方式中,动力电池120的电池管理系统(Battery Management System,BMS)采集动力电池120的状态信息,例如电池温度、荷电状态(State of Charge,SOC)、电压信号、电流信号等,并根据该状态信息确定动力电池120是否需要加热。当确定需要对动力电池120进行加热时,BMS可以向整车控制器(Vehicle Control Unit,VCU)发送加热请求。VCU根据BMS发送的加热请求,确定是否开启电池加热装置110对动力电池120进行加热。
例如,VCU接收到BMS发送的加热请求后,可以根据动力电池120的SOC,确定是否利用电池加热装置110对动力电池120进行加热。其中,当动力电池120的电量充足,即SOC较高,比如高于一个阈值时,可以利用电池加热装置110对动力电池120进行加热,此时并不影响动力汽车的正常行驶。
又例如,当动力电池120的电量不足,即SOC较低,比如低于一个阈值时,为了降低电池加热损耗,可以不利用电池加热装置110对动力电池加热。由于电机控制器,例如微程序控制器(Microprogrammed Control Unit,MCU)可以根据电机的电压和电流等信息,确定电机状态,并发送给VCU。因此,如果电机此时处于正常工作的状态,那么可以利用电机工作损耗产生的热量对动力电池120进行加热或保温,例如利用行车时电机工作损耗产生的热量加热动力电池120的冷却液,从而由该冷却液对动力电池120加热或保温。
或者,当动力电池120的SOC较低时,也可以开启电池加热装置110对动力电池120进行加热,并调整电池加热装置110的加热周期的长度,或者说,调整电池加热装置110的加热频率。
本申请并不限定电池加热装置110的使用场景,本申请实施例的电池加热装置110可以在任何需要的情况下,用来对动力电池120进行加热。
在电池加热装置110对动力电池120加热的过程中,动力电池120的BMS还可以监测动力电池120的温度是否存在异常。当动力电池120的温度存在异常时,例如动力电池120中的不同电芯之间的温度差异较大时,BMS可以向VCU发送温度异常的信息,则VCU控制电池加热装置110停止对动力电池120加热。此时,可以利用电机工作损耗产生的热量对动力电池120进行加热或保温,例如利用电机工作损耗产生的热量加热动力电池120的冷却液,从而由冷却液对动力电池120加热或保温。
在电池加热装置110对动力电池120加热过程中,如果动力电池120的温度已满足要求,则VCU可以控制电池加热装置110停止对动力电池120加热。此时,可 以利用电机工作损耗产生的热量对动力电池120进行保温,例如利用电机工作损耗产生的热量加热动力电池120的冷却液,从而由冷却液对动力电池120保温。
以下,结合图2至图5,对本申请实施例的电池加热装置110加热动力电池120的方案进行描述。
图2是本申请实施例的电池加热装置110的示意性框图。如图2所示,电池加热装置110包括加热模块1110和控制模块1120。
其中,加热模块1110包括第一桥臂1111、第二桥臂1112和储能元件1113。储能元件1113例如可以是电感L,或者是串联在一起的电感L和第一电容。
动力电池120的两端例如还可以并联有第二电容C2。该第二电容C2可以实现稳压等功能,减小动力电池120的电压波动,提高动力电池120的电压稳定性。这样,在行车过程中,可以降低电机控制器对电池电压的采样精度要求。
控制模块1120用于控制第一桥臂1111和第二桥臂1112,以形成动力电池120向储能元件1113放电的回路、以及储能元件1113向动力电池120充电的回路,从而在放电和充电的过程中对动力电池进行加热。
控制模块1120可以是VCU,也可以是与VCU相对独立的控制模块,例如是针对电池加热装置110专门设置的控制模块,本申请实施例对此不做限定。
可见,电池加热装置110对动力电池120进行加热时,需要控制模块1120对加热模块1110中的第一桥臂1111和第二桥臂1112进行控制,通过控制第一桥臂1111和第二桥臂1112的导通或断开,形成动力电池120向储能元件1113放电的回路、以及储能元件1113向动力电池120充电的回路。放电回路和充电回路来回切换,从而使动力电池120和储能元件1113之间反复进行充放电。由于放电和充电过程中电池内部存在电流的流动,因此会使电池的温度升高,实现对电池的加热。
在一种实现方式中,第一桥臂1111的第一端E11、第二桥臂1112的第一端、以及动力电池120的第一端相连,第一桥臂1111的第二端E12、第二桥臂1112的第二端E22、以及动力电池120的第二端相连。其中,第一桥臂1111包括第一子桥臂1101和第二子桥臂1102,第二桥臂1112包括第三子桥臂1103和第四子桥臂1104。储能元件1113的第一端连接在第一子桥臂1101和第二子桥臂1102之间,储能元件1113的第二端连接在第三子桥臂1103和第四子桥臂1104之间。
其中,动力电池120的第一端为动力电池120的正极,动力电池120的第二端为动力电池120的负极;或者,动力电池120的第一端为动力电池120的负极,动力电池120的第二端为动力电池120的正极。
基于此电路结构,在对动力电池120进行加热时,控制模块1120可以控制第一子桥臂1101和第四子桥臂1104同时导通,形成包括动力电池120、第一子桥臂1101、储能元件1113和第四子桥臂1104的回路,以由动力电池向储能元件1113放电;以及,控制第二子桥臂1102和第三子桥臂1103同时导通,形成包括动力电池120、第二子桥臂1102、储能元件1113和第三子桥臂1103的回路,以由储能元件1113向动力电池120充电,以在放电和充电的过程中实现对动力电池120的加热。
基于此电路结构,在对动力电池120进行加热时,控制电模块1120也可以控制第二子桥臂1102和第三子桥臂1103同时导通,形成包括动力电池120、第三子桥臂1103、储能元件1113和第二子桥臂1102的回路,用于动力电池向储能元件1113放电;以及,控制第一子桥臂1101和第四子桥臂1104同时导通,形成包括动力电池120、第四子桥臂1104、储能元件1113和第一子桥臂1101的回路,用于储能元件1113向动力电池120充电,以在放电和充电的过程中实现对动力电池120的加热。
以下,以动力电池120的第一端为其正极,动力电池的第二端为其负极,且储能元件1113为电感L为例,对电池加热的过程进行详细描述。
在一种实现方式中,如图3所示的加热模块1110,第一子桥臂1101可以包括第一开关管V11、以及与第一开关管V11并联的第一续流二极管D11;第二子桥臂1102可以包括第二开关管V12、以及与第二开关管V12并联的第二续流二极管D12;第三子桥臂1103可以包括第三开关管V13、以及与第三开关管V13并联的第三续流二极管D13;第四子桥臂1104可以包括第四开关管V14、以及与第四开关管V14并联的第四续流二极管D14。
续流二极管通常用于配合电感使用。当电感的电流突然变化时,电感两端的电压会发生突变,有可能损坏电路回路的其他元件。而当配合续流二极管时,电感的电流可以较平缓地变化,避免电压发生突变,提高电路的安全性。
应理解,在一些情况下,第一开关管V11和与其并联的第一续流二极管D11、第二开关管V12和与其并联的第二续流二极管D12、第三开关管V13和与其并联的第三续流二极管D13、第四开关管V14和与其并联的第四续流二极管D14,均可以称为绝缘栅门极晶体管(Insulated Gate Bipolar Translator,IGBT)。
在一种实现方式中,以图3所示的加热模块1110为例,控制模块1120(图3中未示出)具体用于:控制第一开关管V11和第四开关管V14闭合,第二开关管V12和第三开关管V13断开,形成包括动力电池120、第一开关管V11、电感L和第四开关管V14的回路,用于动力电池120向电感L放电;控制第一开关管V11、第二开关管V12、第三开关管V13和第四开关管V14断开,形成包括动力电池120、第二续流二极管D12、电感L和第三续流二极管D13的回路,用于电感L向动力电池120充电。
也就是说,每个加热周期可以包括第一阶段和第二阶段。其中,在第一阶段,第一开关管V11和第四开关管V14闭合,第二开关管V12和第三开关管V13断开,即第一子桥臂1101和第四子桥臂1104同时导通,形成包括动力电池120、第一开关管V11、电感L和第四开关管V14的回路,该回路用于动力电池120向电感L放电,放电路径为:电池正极→V11→L→V14→电池负极;接着,在第二阶段,第一开关管V11和第四开关管V14也断开,形成包括动力电池120、第二续流二极管D12、电感L和第三续流二极管D13的回路,该回路用于电感L向动力电池120充电,充电路径为:电池负极→D12→L→D13→电池正极。
进一步地,在另一种实现方式中,控制模块1120还用于:控制第二开关管V12和第三开关管V13闭合,第一开关管V11和第四开关管V14断开,形成包括动力电池120、第三开关管V13、电感L和第二开关管V12的回路,用于动力电池120向电 感L放电;以及,控制第一开关管V11、第二开关管V12、第三开关管V13和第四开关管V14断开,形成包括动力电池120、第四续流二极管D14、电感L和第一续流二极管D11的回路,用于电感L向动力电池120充电。
这种情况下,每个加热周期可以包括第一阶段和第二阶段,或者包括第三阶段和第四阶段,或者同时包括第一阶段、第二极端、第三阶段和第四阶段。其中,在第三阶段,第二开关管V12和第三开关管V13闭合,第一开关管V11和第四开关管V14断开,即第二子桥臂1102和第三子桥臂1103同时导通,形成包括动力电池120、第三开关管V13、电感L和第二开关管V12的回路,该回路用于动力电池120向电感L放电,放电路径为:电池正极→V13→L→V12→电池负极;接着,在第四阶段,第二开关管V12和第三开关管V13也断开,形成包括动力电池120、第四续流二极管D14、电感L和第一续流二极管D11的回路,该回路用于电感L向动力电池120充电,充电路径为:电池负极→D14→L→D11→电池正极。
这样,通过设计合理的控制时序,控制各个子桥臂的导通和断开,从而形成动力电池120向电感L放电的回路、以及电感L向动力电池120充电的回路。放电回路和充电回路来回切换,使动力电池120和电感L之间反复进行充放电,实现对电池的持续加热。
上面描述了本申请的电池加热装置110对动力电池120加热的过程,即电池加热装置110的加热模式,与传统的利用电机对动力电池120进行加热的方式不同,该电池加热装置110对动力电池120进行加热时,电机可以正常运行,因此该电池加热装置在加热模式下工作时,并不影响该动力电池120所在车辆的正常行驶。下面,结合图4,描述充电装置140通过电池加热装置110对动力电池120充电的过程,即电池加热装置110的充电模式。该充电装置140包括并不限于充电桩或者充电机。电池加热装置110与充电装置140相连,充电装置140用于通过电池加热装置110向动力电池120充电。
由于电池加热装置110同时具有加热模式和充电模式,其不仅可以用来对动力电池120进行加热,还可以在充电装置140向动力电池120充电的过程中,调节充电电压。这样,当充电装置140的电压与动力电池120的电压不匹配时,例如充电装置140的电压低于或者高于动力电池120的电压时,充电装置140可以通过电池加热装置110对动力电池120进行升压充电或者降压充电,提高充电装置140和动力电池120的适配性。
例如,在充电装置140的电压低于动力电池120的电压时,控制模块1120控制第一桥臂1111和第二桥臂1112,形成充电装置140向储能元件1113充电的回路、以及充电装置140和储能元件1113同时向动力电池120充电的回路。
又例如,在充电装置140的电压高于动力电池120的电压时,控制模块1120控制第一桥臂1111和第二桥臂1112,形成充电装置140向动力电池120和储能元件1113充电的回路、以及储能元件1113向动力电池120充电的回路。
在一种实现方式中,如图4所示,以储能元件1113为电感L为例,其第二端通过第五开关管V15与充电装置140的一端连接,第二桥臂1112的第二端E22与充 电装置140的另一端连接,充电装置140用于通过电池加热装置110向动力电池120充电。图4中的电容C3可以是充电装置140的电容,例如可以在充电过程中起稳压作用。
在一种实现方式中,第三开关管V13还可以作为模式切换的开关,当电池加热装置110处于加热模式时,控制模块1120控制第三开关管V13闭合;当电池加热装置110处于充电模式时,控制模块1120控制第三开关管V13断开。
应理解,第三开关管V13作为模式切换的开关时,其两端不应连接续流二极管D13。这时,一个加热周期可以仅包括上述的第三阶段和第四阶段,即,首先,第二开关管V12和第三开关管V13同时闭合,形成包括动力电池120、第三开关管V13、电感L和第二开关管V12的回路,用于动力电池120向电感L放电;其次,第二开关管V12和第三开关管V13也断开,形成包括动力电池120、第四续流二极管D14、电感L和第一续流二极管D11的回路,用于电感L向动力电池120充电。此时,第四开关管V14两端也可以不连接续流二极管D14。
或者,在另一种实现方式中,如图5所示,第一桥臂1111的第一端E11和第二桥臂1112的第一端E21之间可以连接有第六开关V16,作为模式切换的开关。在加热模式中,第六开关V16闭合;而在充电模式中,第六开关V16断开。
当电池加热装置110由加热模式切换至充电模式,控制模块1120还用于:控制所述第三子桥臂1103断开,例如第三开关管V13或者第六开关管V16断开;在充电装置140的电压低于动力电池120的电压时,控制第二开关管V12和第五开关管V15闭合,第一开关管V11和第四开关管V14断开,形成包括充电装置140、储能元件1113和第二开关管V12的回路,用于充电装置140对储能元件1113充电;以及,控制第一开关管V11和第五开关管V15闭合,第二开关管V12和第四开关管V14断开,形成包括充电装置140、储能元件1113、第一开关管V11和动力电池120的回路,用于充电装置140和储能元件1113同时向动力电池120充电。
可以看出,充电装置140的电压低于动力电池120的电压时,通过设置合理的控制时序,控制各个子桥臂的导通和断开,在每个充电周期中形成充电装置140向储能元件1113充电的第一阶段、以及充电装置140和储能元件1113同时向动力电池120充电的第二阶段。这样,在充电装置140向储能元件1113充电的第一阶段,储能元件1113中会存储一定的电量,因此储能元件1113就能够在第二阶段与充电装置140一起,共同向动力电池120充电,减小充电装置140和动力电池120之间的电压差异,提高充电效率。
进一步地,控制模块1120还用于:在充电装置140的电压高于动力电池120的电压时,控制第一开关管V11和第五开关管V15闭合,第二开关管V12和第四开关管V14断开,形成包括充电装置140、储能元件1113、第一开关管V11和动力电池120的回路,用于充电装置140向动力电池120和储能元件1113充电;以及,控制第一开关管V11闭合,第二开关管V12、第四开关管V14和第五开关管V15断开,形成包括储能元件1113、第一开关管V11、动力电池120和第四续流二极管D14的回路,用于储能元件1113向动力电池120充电。
可以看出,充电装置140的电压高于动力电池120的电压时,通过设置合理的控制时序,控制各个子桥臂的导通和断开,在每个充电周期中形成充电装置140向储能元件1113和动力电池120充电的阶段、以及仅储能元件1113向动力电池120充电的阶段。一方面,由于充电装置140向储能元件1113和动力电池120充电时,储能元件1113能够吸收一部分电压,因此适当地减小了充电装置140和动力电池120之间的电压差异;另一方面,由于充电装置140的电压大于动力电池120的电压,为了避免充电装置140对动力电池120进行持续大电压的充电,充电装置14和储能元件1113可以交替对动力电池120充电。其中,由于充电装置140向储能元件1113和动力电池120充电时,储能元件1113中能够存储一定的电量,基于这部分电量,储能元件1113能够单独向动力电池120充电。
在一种实现方式中,如图6所示,动力电池120还与电机的驱动电路131相连,用于向驱动电路131提供电源。图6中以三相电机为例,其驱动电路131为逆变器电路,包括开关管V1、开关管V2、开关管V3、开关管V4、开关管V5和开关管V6组成的桥臂,并连接电机130的绕组A1、绕组B1和绕组C1。
可见,在利用电池加热装置110对动力电池120加热时,动力电池120仍可以向与动力电池120相连的电机的驱动电路131提供电源,从而实现在行车过程中对动力电池120的加热。
基于上面的描述,通过设置额外的电池加热装置110,使得利用该电池加热装置110对动力电池120进行加热时,电机可以正常驱动车辆行驶,实现行车加热。具体地,通过设计合理的控制时序对电池加热装置110中的各个桥臂进行控制,形成动力电池120向电池加热装置110中的储能元件1113放电的回路,以及该储能元件1113向动力电池120充电的回路,从而有效利用储能元件1113,实现对动力电池的加热。
当充电装置140通过电池加热装置110向动力电池120充电时,电池加热装置110进入充电模式,这时,由于无法利用电池加热装置110对动力电池120进行加热,因此可以利用电机的驱动电路131对动力电池120进行加热。与利用电机工作损耗产生的热量加热冷却液的方式不同,在这种情况下,可以通过控制驱动电路131中的IGBT,形成充放电回路,从而实现对动力电池120的加热。例如,当VCU收到BMS发送的加热请求,但电池加热装置110正处于充电模式时,VCU可以通知电机控制器控制电机的驱动电路131对动力电池120进行加热,例如控制驱动电路131中的IGBT即开关管V1至开关管V6的通断,以通过驱动电路131对动力电池120加热。
也就是说,除了上述的加热模式和充电模式,电池加热装置110还可以具有另外一种模式,即充电加热模式。当电池加热装置110处于充电加热模式时,充电装置140通过电池加热装置110向动力120充电,并且电机的驱动电路131对动力电池120进行加热。
在一种实现方式中,可以通过空间矢量控制法(Space Vector Pulse Width Modulation,SVPWM)生成驱动电路131中各桥臂的开关管的控制信号,并通过该控制信号控制各桥臂的开关管的通断状态,使得流入电机绕组的电流调制为交流电。示 例性地,可以控制绕组电流的直轴电流分量为交变电流,以及控制绕组电流的交轴电流分量为0,来将电机绕组的电流调制为交流电。
获取驱动电路131至电机之间的三相连接线路上采集的任意两相电流ia和ib,任意两相电流ia和ib由驱动电路131流向电机。电机控制器将采集到的电流由abc坐标系转换至dq坐标系,然后在dq坐标系分解得到直轴分量id和交轴分量iq。利用交轴分量iq、直轴分量id、交轴信号给定值i_q^*、以及直轴信号给定值i_d^*,得到需要导通的开关管的调制信号。其中,交轴信号给定值i_q^*等于0。这样,利用电机绕组储能,可以实现对动力电池120的充放电。
在利用电机的驱动电路131对动力电池120进行加热的过程中,会引起电压波动。但是,由于电池加热装置110的存在,使得充电装置140通过电池加热装置110向动力电池120输出的电压,能够随电池加热过程中的电压波动进行动态调节,减少电池加热过程对充电装置140的影响。
应理解,本申请实施例中所述的“连接”或者“相连”,可以是直接连接,或者是间接连接,本申请对此不做限定。例如,第一桥臂1111的第一端E11和第二桥臂1112的第一端E21相连,可以如图3所示,第一桥臂1111的第一端E11和第二桥臂1112的第一端E21之间直接电连接;也可以如图5所示,第一桥臂1111的第一端E11和第二桥臂1112的第一端E21通过其他元件例如开关管V16相连。
本申请实施例还提供一种电池加热装置的控制方法。这里,电池加热装置110的结构可以参考上述针对图1至图5的具体描述,这里不再赘述。如图7所示,电池加热装置的控制方法700包括以下步骤中的部分或全部。
在步骤710中,控制所述第一桥臂和所述第二桥臂,形成所述动力电池向所述储能元件放电的回路,以在放电的过程中对所述动力电池进行加热。
在步骤720中,所述储能元件向所述动力电池充电的回路,以在充电的过程中对所述动力电池进行加热。
基于上述技术方案,通过设计合理的控制时序,控制电池加热装置中的两个桥臂,形成动力电池向储能元件放电的回路、以及储能元件向动力电池充电的回路,从而在放电和充电的过程中对动力电池进行加热。当利用该电池加热装置对动力电池进行加热时,电机可以正常驱动车辆行驶,从而实现行车加热。
在一种实现方式中,所述电池加热装置还与充电装置相连,所述充电装置用于通过所述电池加热装置向所述动力电池充电,所述控制方法还包括:在所述充电装置的电压低于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述储能元件充电的回路、以及所述充电装置和所述储能元件同时向所述动力电池充电的回路;在所述充电装置的电压高于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述动力电池和所述储能元件充电的回路、以及所述储能元件向所述动力电池充电的回路。
在一种实现方式中,所述第一桥臂的第一端、所述第二桥臂的第一端和所述动力电池的第一端相连,所述第一桥臂的第二端、所述第二桥臂的第二端和所述动力电池的第二端相连;所述第一桥臂包括第一子桥臂和第二子桥臂,所述第二桥臂包 括第三子桥臂和第四子桥臂,所述储能元件的第一端连接在所述第一子桥臂和所述第二子桥臂之间,所述储能元件的第二端连接在所述第三子桥臂和所述第四子桥臂之间。
在一种实现方式中,所述第一子桥臂包括第一开关管和与所述第一开关管并联的第一续流二极管;所述第二子桥臂包括第二开关管和与所述第二开关管并联的第二续流二极管;所述第三子桥臂包括第三开关管和与所述第三开关管并联的第三续流二极管;所述第四子桥臂包括第四开关管和与所述第四开关管并联的第四续流二极管。
在一种实现方式中,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,包括:接收加热请求消息;根据所述加热请求消息,生成第一控制信号,其中,所述第一控制信号用于:
控制所述第一开关管和所述第四开关管闭合,所述第二开关管和所述第三开关管断开,形成包括所述动力电池、所述第一开关管、所述储能元件和所述第四开关管的回路,用于所述动力电池向所述储能元件放电;以及,控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第二续流二极管、所述储能元件和所述第三续流二极管的回路,用于所述储能元件向所述动力电池充电;和/或,
控制所述第二开关管和所述第三开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述动力电池、所述第三开关管、所述储能元件和所述第二开关管的回路,用于所述动力电池向所述储能元件放电;以及,控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第四续流二极管、所述储能元件和所述第一续流二极管的回路,用于所述储能元件向所述动力电池充电。
在一种可能的实现方式中,所述控制方法还包括:接收加热停止消息;根据所述加热停止消息,生成第二控制信号,其中,所述第二控制信号用于控制所述电池加热装置停止对所述动力电池加热。
在一种实现方式中,所述储能元件的第二端通过第五开关管与充电装置的一端连接,所述第二桥臂的第二端与所述充电装置的另一端连接,所述充电装置用于通过所述加热模块向所述动力电池充电,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,还包括:控制所述第三子桥臂断开;在所述充电装置的电压低于所述动力电池的电压时,控制所述第二开关管和所述第五开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件和所述第二开关管的回路,用于所述充电装置对所述储能元件充电;以及,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置和所述储能元件同时向所述动力电池充电。
在一种实现方式中,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,还包括:在所述充电装置的电压高于所述动力电池的电压时,控制所述第一开关 管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置向所述动力电池和所述储能元件充电;以及,控制所述第一开关管闭合,所述第二开关管、所述第四开关管和所述第五开关管断开,形成包括所述储能元件、所述第一开关管、所述动力电池和所述第四续流二极管的回路,用于所述储能元件向所述动力电池充电。
在一种实现方式中,所述储能元件包括电感;或者,所述储能元件包括串联的电感和第一电容。
在一种实现方式中,所述动力电池的两端还并联有第二电容。
在一种实现方式中,所述动力电池还与电机的驱动电路相连,用于向所述驱动电路提供电源。
应理解,方法实施例中对各个桥臂的具体控制以及产生的有益效果,可以参考上述装置实施例中的相应描述,为了简洁,这里不再赘述。
图8示出了本申请实施例的电池加热装置的控制电路800的示意性框图。如图8所示,控制电路800包括处理器820,可选地,该控制电路800还包括存储器810,其中,存储器810用于存储指令,处理器820用于读取该指令并基于该指令执行上述本申请各个实施例中的方法。
处理器820例如可以对应于上述任一电池加热装置的控制模块。
图9示出了本申请实施例的动力装置900的示意性框图。动力装置900包括:动力电池120;上述任一实施例中的电池加热装置110,电池加热装置110与动力电池120相连,用于为动力电池120加热;以及电机130,电机130的驱动电路131与动力电池120相连,动力电池120用于向驱动电路131提供电源。
动力装置900例如可以是动力汽车。
本申请实施例还提供了一种可读存储介质,用于存储计算机程序,该计算机程序用于执行上述本申请各个实施例中的方法。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考上述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以 是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备,例如可以是个人计算机,服务器,或者网络设备等,执行本申请各个实施例所述方法的全部或部分步骤。而上述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (22)

  1. 一种电池加热装置,其特征在于,用于与动力电池相连并对所述动力电池进行加热,所述电池加热装置包括:
    加热模块,包括第一桥臂、第二桥臂和储能元件;以及,
    控制模块,用于控制所述第一桥臂和所述第二桥臂,形成所述动力电池向所述储能元件放电的回路、以及所述储能元件向所述动力电池充电的回路,以在放电和充电的过程中对所述动力电池进行加热。
  2. 根据权利要求1所述的电池加热装置,其特征在于,所述电池加热装置还与充电装置相连,所述充电装置用于通过所述电池加热装置向所述动力电池充电,所述控制模块还用于:
    在所述充电装置的电压低于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述储能元件充电的回路、以及所述充电装置和所述储能元件同时向所述动力电池充电的回路;
    在所述充电装置的电压高于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述动力电池和所述储能元件充电的回路、以及所述储能元件向所述动力电池充电的回路。
  3. 根据权利要求1或2所述的电池加热装置,其特征在于,
    所述第一桥臂的第一端、所述第二桥臂的第一端和所述动力电池的第一端相连,所述第一桥臂的第二端、所述第二桥臂的第二端和所述动力电池的第二端相连,
    所述第一桥臂包括第一子桥臂和第二子桥臂,所述第二桥臂包括第三子桥臂和第四子桥臂,所述储能元件的第一端连接在所述第一子桥臂和所述第二子桥臂之间,所述储能元件的第二端连接在所述第三子桥臂和所述第四子桥臂之间。
  4. 根据权利要求3所述的电池加热装置,其特征在于,
    所述第一子桥臂包括第一开关管和与所述第一开关管并联的第一续流二极管;
    所述第二子桥臂包括第二开关管和与所述第二开关管并联的第二续流二极管;
    所述第三子桥臂包括第三开关管和与所述第三开关管并联的第三续流二极管;
    所述第四子桥臂包括第四开关管和与所述第四开关管并联的第四续流二极管。
  5. 根据权利要求4所述的电池加热装置,其特征在于,所述控制模块具体用于:
    控制所述第一开关管和所述第四开关管闭合,所述第二开关管和所述第三开关管断开,形成包括所述动力电池、所述第一开关管、所述储能元件和所述第四开关管的回路,用于所述动力电池向所述储能元件放电;
    控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第二续流二极管、所述储能元件和所述第三续流二极管的回路,用于所述储能元件向所述动力电池充电;
    和/或,
    控制所述第二开关管和所述第三开关管闭合,所述第一开关管和所述第四开关管 断开,形成包括所述动力电池、所述第三开关管、所述储能元件和所述第二开关管的回路,用于所述动力电池向所述储能元件放电;
    控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第四续流二极管、所述储能元件和所述第一续流二极管的回路,用于所述储能元件向所述动力电池充电。
  6. 根据权利要求5所述的电池加热装置,其特征在于,所述储能元件的第二端通过第五开关管与充电装置的一端连接,所述第二桥臂的第二端与所述充电装置的另一端连接,所述充电装置用于通过所述加热模块向所述动力电池充电,所述控制模块还用于:
    控制所述第三子桥臂断开;
    在所述充电装置的电压低于所述动力电池的电压时,控制所述第二开关管和所述第五开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件和所述第二开关管的回路,用于所述充电装置对所述储能元件充电;以及,
    控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置和所述储能元件同时向所述动力电池充电。
  7. 根据权利要求6所述的电池加热装置,其特征在于,所述控制模块还用于:
    在所述充电装置的电压高于所述动力电池的电压时,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置向所述动力电池和所述储能元件充电;以及,
    控制所述第一开关管闭合,所述第二开关管、所述第四开关管和所述第五开关管断开,形成包括所述储能元件、所述第一开关管、所述动力电池和所述第四续流二极管的回路,用于所述储能元件向所述动力电池充电。
  8. 根据权利要求1至7中任一项所述的电池加热装置,其特征在于,
    所述储能元件包括电感;或者,
    所述储能元件包括串联的电感和第一电容。
  9. 根据权利要求1至8中任一项所述的电池加热装置,其特征在于,所述动力电池的两端还并联有第二电容。
  10. 根据权利要求1至9所述的电池加热装置,其特征在于,所述动力电池还与电机的驱动电路相连,用于向所述驱动电路提供电源。
  11. 一种电池加热装置的控制方法,其特征在于,所述电池加热装置与动力电池相连,用于对所述动力电池进行加热,所述电池加热装置包括第一桥臂、第二桥臂和储能元件,所述控制方法包括:
    控制所述第一桥臂和所述第二桥臂,形成所述动力电池向所述储能元件放电的回路、以及所述储能元件向所述动力电池充电的回路,以在放电和充电的过程中对所述动力电池进行加热。
  12. 根据权利要求11所述的控制方法,其特征在于,所述电池加热装置还与充电装置相连,所述充电装置用于通过所述电池加热装置向所述动力电池充电,所述控制方法还包括:
    在所述充电装置的电压低于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述储能元件充电的回路、以及所述充电装置和所述储能元件同时向所述动力电池充电的回路;
    在所述充电装置的电压高于所述动力电池的电压时,控制所述第一桥臂和所述第二桥臂,形成所述充电装置向所述动力电池和所述储能元件充电的回路、以及所述储能元件向所述动力电池充电的回路。
  13. 根据权利要求11或12所述的控制方法,其特征在于,
    所述第一桥臂的第一端、所述第二桥臂的第一端和所述动力电池的第一端相连,所述第一桥臂的第二端、所述第二桥臂的第二端和所述动力电池的第二端相连,
    所述第一桥臂包括第一子桥臂和第二子桥臂,所述第二桥臂包括第三子桥臂和第四子桥臂,所述储能元件的第一端连接在所述第一子桥臂和所述第二子桥臂之间,所述储能元件的第二端连接在所述第三子桥臂和所述第四子桥臂之间,
    所述第一子桥臂包括第一开关管和与所述第一开关管并联的第一续流二极管,所述第二子桥臂包括第二开关管和与所述第二开关管并联的第二续流二极管,所述第三子桥臂包括第三开关管和与所述第三开关管并联的第三续流二极管,所述第四子桥臂包括第四开关管和与所述第四开关管并联的第四续流二极管。
  14. 根据权利要求13所述的控制方法,其特征在于,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,包括:
    接收加热请求消息;
    根据所述加热请求消息,生成第一控制信号,其中,所述第一控制信号用于:
    控制所述第一开关管和所述第四开关管闭合,所述第二开关管和所述第三开关管断开,形成包括所述动力电池、所述第一开关管、所述储能元件和所述第四开关管的回路,用于所述动力电池向所述储能元件放电;
    控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第二续流二极管、所述储能元件和所述第三续流二极管的回路,用于所述储能元件向所述动力电池充电;
    和/或,
    控制所述第二开关管和所述第三开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述动力电池、所述第三开关管、所述储能元件和所述第二开关管的回路,用于所述动力电池向所述储能元件放电;
    控制所述第一开关管、所述第二开关管、所述第三开关管和所述第四开关管断开,形成包括所述动力电池、所述第四续流二极管、所述储能元件和所述第一续流二极管的回路,用于所述储能元件向所述动力电池充电。
  15. 根据权利要求14所述的控制方法,其特征在于,所述控制方法还包括:
    接收加热停止消息;
    根据所述加热停止消息,生成第二控制信号,其中,所述第二控制信号用于控制所述电池加热装置停止对所述动力电池加热。
  16. 根据权利要求14或15所述的控制方法,其特征在于,所述储能元件的第二端通过第五开关管与充电装置的一端连接,所述第二桥臂的第二端与所述充电装置的另一端连接,所述充电装置用于通过所述加热模块向所述动力电池充电,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,还包括:
    控制所述第三子桥臂断开;
    在所述充电装置的电压低于所述动力电池的电压时,控制所述第二开关管和所述第五开关管闭合,所述第一开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件和所述第二开关管的回路,用于所述充电装置对所述储能元件充电;以及,
    控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置和所述储能元件同时向所述动力电池充电。
  17. 根据权利要求16所述的控制方法,其特征在于,所述控制所述第一桥臂、所述第二桥臂和所述动力电池,还包括:
    在所述充电装置的电压高于所述动力电池的电压时,控制所述第一开关管和所述第五开关管闭合,所述第二开关管和所述第四开关管断开,形成包括所述充电装置、所述储能元件、所述第一开关管和所述动力电池的回路,用于所述充电装置向所述动力电池和所述储能元件充电;以及,
    控制所述第一开关管闭合,所述第二开关管、所述第四开关管和所述第五开关管断开,形成包括所述储能元件、所述第一开关管、所述动力电池和所述第四续流二极管的回路,用于所述储能元件向所述动力电池充电。
  18. 根据权利要求11至17中任一项所述的控制方法,其特征在于,
    所述储能元件包括电感;或者,
    所述储能元件包括串联的电感和第一电容。
  19. 根据权利要求11至18中任一项所述的控制方法,其特征在于,所述动力电池的两端还并联有第二电容。
  20. 根据权利要求11至19所述的控制方法,其特征在于,所述动力电池还与电机的驱动电路相连,用于向所述驱动电路提供电源。
  21. 一种电池加热装置的控制电路,其特征在于,包括处理器,所述处理器用于执行如权利要求11至20中任一项所述的控制方法。
  22. 一种动力装置,其特征在于,包括:
    动力电池;
    根据权利要求1至10中任一项所述的电池加热装置,与所述动力电池相连,用于对所述动力电池进行加热;以及,
    电机,所述电机的驱动电路与所述动力电池相连,所述动力电池用于向所述驱动电路提供电源。
PCT/CN2021/116735 2021-08-05 2021-09-06 电池加热装置及其控制方法、控制电路和动力装置 Ceased WO2023029047A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106025443A (zh) * 2016-07-25 2016-10-12 北京理工大学 一种基于lc谐振进行加热的电源系统及车辆
CN109823234A (zh) * 2019-04-23 2019-05-31 上海汽车集团股份有限公司 一种驱动系统的控制方法、驱动系统及新能源汽车
CN110789400A (zh) * 2019-10-22 2020-02-14 上海交通大学 电池无线充电-加热一体化系统、控制方法及电池系统
CN111391717A (zh) * 2020-06-04 2020-07-10 比亚迪股份有限公司 能量转换装置、方法及车辆
CN212587580U (zh) * 2020-05-29 2021-02-23 比亚迪股份有限公司 电池能量处理装置和车辆

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011188600A (ja) 2010-03-08 2011-09-22 Toyota Central R&D Labs Inc 充電システム
CN107039708B (zh) 2016-11-29 2019-08-02 北京交通大学 一种锂离子电池组低温自加热方法
CN111347853B (zh) * 2018-12-21 2022-01-07 比亚迪股份有限公司 电机控制电路、充放电方法、加热方法及车辆
CN111347924B (zh) * 2018-12-21 2022-09-09 比亚迪股份有限公司 电机控制电路、车辆、加热方法及充放电方法
CN111347900B (zh) * 2018-12-21 2021-11-12 比亚迪股份有限公司 一种车辆、电机控制电路、动力电池充电与加热方法
JP7057767B2 (ja) 2019-07-09 2022-04-20 株式会社Soken 電源システム
CN213734669U (zh) * 2020-08-05 2021-07-20 比亚迪股份有限公司 一种能量转换装置及车辆

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106025443A (zh) * 2016-07-25 2016-10-12 北京理工大学 一种基于lc谐振进行加热的电源系统及车辆
CN109823234A (zh) * 2019-04-23 2019-05-31 上海汽车集团股份有限公司 一种驱动系统的控制方法、驱动系统及新能源汽车
CN110789400A (zh) * 2019-10-22 2020-02-14 上海交通大学 电池无线充电-加热一体化系统、控制方法及电池系统
CN212587580U (zh) * 2020-05-29 2021-02-23 比亚迪股份有限公司 电池能量处理装置和车辆
CN111391717A (zh) * 2020-06-04 2020-07-10 比亚迪股份有限公司 能量转换装置、方法及车辆

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4250436A4 *

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