WO2012132143A1 - Plate-forme de charge - Google Patents

Plate-forme de charge Download PDF

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Publication number
WO2012132143A1
WO2012132143A1 PCT/JP2011/079618 JP2011079618W WO2012132143A1 WO 2012132143 A1 WO2012132143 A1 WO 2012132143A1 JP 2011079618 W JP2011079618 W JP 2011079618W WO 2012132143 A1 WO2012132143 A1 WO 2012132143A1
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WO
WIPO (PCT)
Prior art keywords
coil
position detection
circuit
echo
echo signal
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/JP2011/079618
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English (en)
Japanese (ja)
Inventor
恭三 寺尾
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2013507069A priority Critical patent/JPWO2012132143A1/ja
Publication of WO2012132143A1 publication Critical patent/WO2012132143A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
    • B60L53/39—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer with position-responsive activation of primary coils
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/147—Emission reduction of noise electro magnetic [EMI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/30—Networks 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
    • H02J2105/33—Networks 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
    • H02J2105/37—Networks 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]
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a charging stand on which a battery built-in device such as a battery pack or a mobile phone is placed on top and the power is transferred by electromagnetic induction to charge the built-in battery.
  • a battery built-in device such as a battery pack or a mobile phone
  • a charging stand has been developed that carries power from the power transmission coil to the power receiving coil by the action of electromagnetic induction and charges the internal battery.
  • This charging stand incorporates a power transmission coil that is excited by an AC power source.
  • a battery built-in device such as a battery pack or a portable device set on a charging base has a power receiving coil that is electromagnetically coupled to a power transmission coil of the charging base.
  • the battery built-in device also has a built-in circuit for rectifying the alternating current induced in the power receiving coil and supplying the battery to the battery for charging. According to this structure, the battery pack can be charged in a non-contact state by placing the battery pack on the charging stand.
  • the above charging stand can be conveniently used by moving the power transmission coil to the position of the power reception coil. This is because the user can set the battery built-in device at a free position on the charging stand and charge the power receiving coil of the battery built-in device close to the power receiving coil.
  • a charging stand has been developed to achieve this. (See Patent Document 1)
  • the above charging stand includes a moving mechanism for moving the power transmission coil so as to approach the power receiving coil.
  • a position detection controller for detecting the position of the power receiving coil and controlling the transfer mechanism is provided.
  • the position detection controller fixes a plurality of position detection coils to the upper surface plate of the case on which the battery built-in device is placed.
  • the position detection coils are fixed at regular intervals.
  • a detection pulse generating circuit for supplying a pulse signal is connected to each position detection coil. When a pulse signal is supplied from the detection pulse generating circuit to the position detection coil, the pulse signal is excited to output an echo signal from the power receiving coil to the position detection coil.
  • the echo signal Since the echo signal is output from the power receiving coil excited by the pulse signal, the echo signal is guided to the position detection coil with a certain time delay from the pulse signal.
  • an echo amplification circuit is connected to the position detection coil.
  • the echo signal received by the echo amplifier circuit is input to an identification circuit that detects the position of the power receiving coil.
  • the identification circuit determines the position of the power receiving coil from the level of the input echo signal.
  • the above position detection controller outputs a pulse signal to each position detection coil in turn by a detection pulse generation circuit.
  • the identification circuit can detect the position of the power receiving coil from the level of the echo signal induced in each position detection coil. When the echo signal induced in the position detection coil closest to the power receiving coil becomes the largest and the power receiving coil 151 is in the middle of the two position detecting coils 130, as shown by the point B in FIG.
  • the levels of echo signals induced in the X-axis position detection coil 130A and the second X-axis position detection coil 130A are the same.
  • each X-axis position detection coil 130A the level of the echo signal that is induced when the power receiving coil 151 is closest is the strongest, and the level of the echo signal decreases as the power receiving coil 151 moves away. Therefore, it can be determined which X-axis position detection coil the power receiving coil is closest to which X-axis position detection coil has the strongest echo signal level. Further, when an echo signal is induced in two adjacent X-axis position detection coils, it can be determined which of the level ratios of the echo signals is closer to the position detection coil.
  • the above position detection controller outputs a pulse signal from the position detection coil to the power receiving coil, detects the level of the echo signal output from the power receiving coil excited by the pulse signal to the position detection coil, and detects the position of the power receiving coil. Is detected. Since the level of the echo signal induced in the position detection coil is extremely small, it is amplified by the echo amplification circuit and input to the identification circuit. The echo amplification circuit amplifies the echo signal with a constant amplification factor.
  • This position detection controller has a drawback that the position of the power receiving coil cannot be accurately detected depending on the model of the battery built-in device set on the charging stand.
  • the level of the echo signal induced from the power receiving coil to the position detecting coil varies due to changes in the size of the power receiving coil of the battery built-in device, the Q of the resonance circuit, and the interval between the position detecting coil and the power receiving coil. It is.
  • Best way to level a large battery device of the echo signal by setting smaller the gain of the echo amplifier circuit, can not be accurately detect the position of the power receiving coil of a small battery device level of the echo signal. This is because if the level of the echo signal is small, the level of the echo signal cannot be accurately detected due to quantization noise or external noise.
  • the amplification factor of the echo amplifier circuit is adjusted to a large value so that it is optimal for devices with a low echo signal level, it is possible to accurately detect the position of the power receiving coil of the device with a high echo signal level. Disappear. This is because the echo signal of a large level input to the echo amplifier circuit is saturated, and the echo signal is outside the region where it can be linearly amplified. That is, it becomes impossible to accurately detect the positions of the power receiving coils of all the battery built-in devices by setting various types of battery built-in devices.
  • the echo amplifying circuit In order for the discriminating circuit to accurately detect the position of the receiving coil from the level of the echo signal, the echo amplifying circuit is amplified linearly, that is, with a certain gain so as to be directly proportional to the level of the input echo signal, and discriminating. Must be input to the circuit.
  • the maximum value of the output level of the echo amplifier circuit is limited by the power supply voltage, and generally the signal level of 70% to 80% of the power supply voltage can be output linearly. Further, when the level of the echo signal input into the circuit is small, can no longer enter the identification circuit echo signal amplified to a predetermined level, the identification circuit can not be detected the position of precisely receiving coil.
  • the identification circuit converts the level of the echo signal that is amplified and input into a digital signal and calculates the position of the power receiving coil. However, if the signal level is low, an error due to quantization noise increases. For example, an identification circuit that converts an echo signal input from an echo amplifier circuit into an 8-bit digital signal and detects the position of the receiving coil decomposes the input echo signal into 256 gradations, The position can be detected accurately. However, when the level of the echo signal is halved, the position of the receiving coil is detected from the echo signal level because the position of the receiving coil is detected by decomposing the echo signal into 128 gradations.
  • the charging base of Patent Document 1 is provided with a corrected position detection controller for more accurately detecting the position of the power receiving coil.
  • This charging stand roughly detects the position of the power receiving coil with the position detection controller, and after making the power transmission coil approach the power receiving coil, further detects the position of the power receiving coil with the corrected position detection controller, The power transmission coil is moved closer to the power reception coil.
  • the correction position detection controller controls the moving mechanism by accurately detecting the position of the power receiving coil from the oscillation frequency of the oscillation circuit using an AC power source that outputs an AC signal to the power transmission coil as a self-excited oscillation circuit.
  • the correction position detection controller detects the oscillation frequency of the AC power supply by moving the power transmission coil.
  • FIG. 14 shows the characteristic that the oscillation frequency of the self-excited oscillation circuit changes. This figure shows the change in the oscillation frequency with respect to the relative displacement between the power transmission coil and the power reception coil. As shown in this figure, the oscillation frequency of the oscillation circuit of the self-excited, the most high at the position where the power transmission coil is closest to the receiving coil, the oscillation frequency becomes lower as the relative position shifts.
  • the corrected position detection controller can move the power transmission coil, stop at the position where the oscillation frequency is highest, and approach the power transmission coil to the power reception coil.
  • This charging stand requires a dedicated circuit configuration to detect the position of the power transmission coil more accurately in order to bring the power transmission coil closer to the power reception coil. For this reason, there exists a fault which a position detection controller becomes complicated and a manufacturing cost becomes high.
  • An important object of the present invention is to accurately detect the position of the power receiving coil even when the level of the echo signal induced in the position detecting coil fluctuates, and to efficiently carry power by bringing the power transmitting coil closer to the power receiving coil. To provide a charging stand.
  • the charging base of the present invention is a charging base for the battery built-in device 50 including the battery 52 that is charged by the power conveyed to the power receiving coil 51.
  • the charging stand is connected to the AC power source 12 and includes a power transmission coil 11 that carries electromotive force to the power receiving coil 51, and a case having the power transmission coil 11 and an upper surface plate 21 on which the battery built-in device 50 is placed on the upper surface. 20, detecting the position of the moving mechanism 13 built in the case 20 and moving the power transmission coil 11 along the inner surface of the upper surface plate 21, and the position of the power receiving coil 51 of the battery built-in device 50 mounted on the upper surface plate 21. Position detection controllers 14 and 64 that control the moving mechanism 13 to cause the power transmission coil 11 to approach the power reception coil 51 are provided.
  • the position detection controllers 14 and 64 include a plurality of position detection coils 30 arranged at predetermined intervals on the back side of the top plate 21, and a detection pulse generation circuit 31 that supplies a pulse signal as a position detection signal to the position detection coil 30.
  • An echo amplification circuit 32 that receives an echo signal that is excited by a pulse signal supplied from the detection pulse generation circuit 31 to the position detection coil 30 and is induced from the power reception coil 51 to the position detection coil 30;
  • an identification circuit 33 for discriminating the position of the power receiving coil 51 from the echo signal output from the input signal 32.
  • the echo amplification circuit 32 includes a gain adjustment circuit 37 that adjusts the amplification factor so that the echo signal input from the position detection coil 30 is linearly amplified without being saturated, and the gain adjustment circuit 37 specifies the amplification factor.
  • the echo amplifying circuit 32 amplifies the echo signal input from the position detection coil 30 and inputs it to the identification circuit 33.
  • the above charging stand detects the position of the receiving coil accurately even if the level of the echo signal induced in the position detecting coil varies depending on the model of the battery built-in device to be set, and the transmitting coil becomes the receiving coil. It has the feature that it can approach and efficiently carry power. It more charging stand is because by setting the optimum value the amplification factor of echo amplifier circuit with a gain adjustment circuit, and inputs the identification circuit amplifies the echo signal induced in the position detection coil.
  • the echo amplification circuit whose gain is set to the optimum value by the gain adjustment circuit does not saturate the echo signal even if the echo signal changes from a large level to a small level, and linearly amplifies it at a constant gain. It can be input at the optimum level for the identification circuit.
  • the echo amplifier circuit 32 includes a differential amplifier 38, the gain adjustment circuit 37 inputs an amplification factor adjustment voltage to one input terminal of the differential amplifier 38, and the amplification factor of the differential amplifier 38. Can be adjusted.
  • the above charging stand can set the amplification factor of the echo amplifier circuit to an optimum value with a simple circuit configuration.
  • the gain adjustment circuit 37 includes a voltage adjustment circuit 39 that outputs a gain adjustment voltage by smoothing a signal output by PWM modulation, and the gain adjustment voltage output from the voltage adjustment circuit 39. Can be input to one input terminal of the differential amplifier 38 to adjust the amplification factor of the differential amplifier 38.
  • the above charging stand can set the amplification factor of the differential amplifier with a voltage adjustment circuit having a simple circuit configuration.
  • the charging stand of the present invention includes a multiplexer 34 for connecting each position detection coil 30 to a detection pulse generation circuit 31 and an echo amplification circuit 32 in order, and balance adjustment for eliminating the imbalance of the internal resistance of the multiplexer 34.
  • a portion 44 can be provided. The above charging stand can eliminate the imbalance due to the internal resistance of the multiplexer, and more accurately determine the position of the power receiving coil from the level of the echo signal.
  • the balance adjustment unit 44 has a drive mechanism 47 that moves the power transmission coil 11 in the arrangement direction of the position detection coils 30, and a pulse signal output from the position detection coil 30 to the power transmission coil 11.
  • the imbalance due to the internal resistance of the multiplexer 34 can be eliminated. Since the charging stand described above uses the power transmission coil in combination with the detection of the imbalance of the internal resistance of the multiplexer, the imbalance of the internal resistance of the multiplexer can be detected with a simple circuit configuration.
  • the drive mechanism 47 moves the power transmission coil 11 to the center of each position detection coil 30, and the balance adjustment unit 44 uses the echo signal from the power transmission coil 11 to change the internal resistance of the multiplexer 34.
  • the above charging stand uses the power transmission coil to detect the imbalance of the internal resistance of the multiplexer, and also uses the moving structure to approach the power receiving coil to detect the imbalance of the internal resistance of each channel of the multiplexer. There are features that can be done. Therefore, there is a feature that the internal resistance of each channel of the multiplexer can be detected without adding a dedicated circuit or structure.
  • the charging base described above has a feature that the position of the power receiving coil can be accurately detected by an echo signal induced in the position detecting coil, and the power transmitting coil can be brought close to the power receiving coil to efficiently carry power.
  • Position it over the charging stand is, while arranged to overlap the next position detection coil part of the position detection coil adjacent are disposed identification circuit, the maximum level of the echo signal is derived This is because the position of the power reception coil is determined from the detection coil and the level of the echo signal of the position detection coil disposed on both sides of the detection coil.
  • the level of the echo signal induced in the position detection coils arranged on both sides of the peak detection region can be increased, and the width of the zero level region of the echo signal of the position detection coil on both sides in the peak vicinity region can be reduced.
  • the identification circuit determines the position of the receiving coil not only from the echo signal of the maximum level but also from the level of the echo signal induced in the position detection coils on both sides. The position of the power receiving coil can be determined more accurately.
  • the position detection coil 30 is an elongated coil having a straight portion, and the adjacent position detection coils 30 are arranged so as to be displaced in a direction perpendicular to the longitudinal direction of the coils and adjacent to each other so as to overlap each other.
  • the overlapping amount (d) of the position detection coils 30 can be set to 1/2 to 9/10 of the lateral width (W) of the elongated coil.
  • the overlapping amount (d) between the position detection coils adjacent to each other is smaller than the lateral width (W) of the position detection coil, the level of the echo signals of the position detection coils on both sides in the peak vicinity region is increased.
  • the position of the coil can be accurately detected.
  • each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.
  • the contents described in some examples and embodiments may be used in other examples and embodiments.
  • FIGS. 1 to 6 show a schematic configuration diagram and a principle diagram of a charging stand.
  • the charging stand 10 places the battery built-in device 50 on the charging stand 10 and charges the built-in battery 52 of the battery built-in device 50 by magnetic induction.
  • the battery built-in device 50 includes a power receiving coil 51 that is electromagnetically coupled to the power transmitting coil 11.
  • a battery 52 that is charged with electric power induced in the power receiving coil 51 is incorporated.
  • the battery built-in device 50 may be a battery pack.
  • FIG. 6 shows a circuit diagram of the battery built-in device 50.
  • the battery built-in device 50 has a capacitor 53 connected in parallel with the power receiving coil 51.
  • the capacitor 53 and the power receiving coil 51 constitute a parallel resonance circuit 54.
  • the battery built-in device 50 of FIG. 6 includes a rectifier circuit 57 including a diode 55 that rectifies an alternating current output from the power receiving coil 51, a smoothing capacitor 56 that smoothes the rectified pulsating current, and an output from the rectifier circuit 57.
  • a charge control circuit 58 for charging the battery 52 with a direct current.
  • the charge control circuit 58 detects the full charge of the battery 52 and transmits a full charge signal indicating that the battery 52 is fully charged to the charging stand 10.
  • the charging stand 10 detects a full charge signal and stops charging.
  • the charging stand 10 includes a power transmission coil 11 that is connected to an AC power source 12 and conveys power to the power receiving coil 51, and the power transmission coil 11.
  • a case 20 having an upper surface plate 21 on which the power receiving coil 51 is mounted, a moving mechanism 13 that is built in the case 20 and moves the power transmission coil 11 along the inner surface of the upper surface plate 21 to approach the power receiving coil 51, and the upper surface plate 21.
  • a position detection controller 14 that detects the position of the battery built-in device 50 to be mounted and controls the moving mechanism 13 to bring the power transmission coil 11 closer to the power receiving coil 51 of the battery built-in device 50.
  • the charging stand 10 includes a power transmission coil 11, an AC power source 12, a moving mechanism 13, and a position detection controller 14 in a case 20.
  • the charging stand 10 charges the built-in battery 52 of the battery built-in device 50 by the following operation.
  • the position detection controller 14 detects the position of the battery built-in device 50.
  • the position detection controller 14 that has detected the position of the battery built-in device 50 controls the moving mechanism 13 to move the power transmission coil 11 along the upper surface plate 21 with the moving mechanism 13, thereby Approach the power receiving coil 51.
  • the power transmission coil 11 approaching the power reception coil 51 is electromagnetically coupled to the power reception coil 51 and carries AC power to the power reception coil 51.
  • the battery built-in device 50 rectifies the AC power of the power receiving coil 51 and converts it into direct current, and charges the built-in battery 52 with this direct current.
  • the charging stand 10 that charges the battery 52 of the battery built-in device 50 through the above operation has the power transmission coil 11 connected to the AC power supply 12 built in the case 20.
  • the power transmission coil 11 is disposed below the upper surface plate 21 of the case 20 and is disposed so as to move along the upper surface plate 21.
  • the efficiency of power transfer from the power transmission coil 11 to the power reception coil 51 can be improved by bringing the power transmission coil 11 closer to the power reception coil 51. Therefore, the power transmission coil 11 is disposed below the top plate 21 and as close to the top plate 21 as possible. Since the power transmission coil 11 moves so as to approach the power reception coil 51 of the battery built-in device 50 placed on the upper surface plate 21, the power transmission coil 11 is disposed so as to be movable along the lower surface of the upper surface plate 21.
  • the case 20 containing the power transmission coil 11 is provided with a flat top plate 21 on which the battery built-in device 50 is placed on the top surface.
  • the charging stand 10 shown in the figure is disposed horizontally with the entire top plate 21 as a flat surface.
  • the upper surface plate 21 has such a size that various battery built-in devices 50 having different sizes and outer shapes can be placed thereon, for example, a quadrangle having a side of 5 cm to 30 cm, or a circle having a diameter of 5 cm to 30 cm.
  • the charging stand according to the present invention can also charge a built-in battery in order by mounting a plurality of battery-equipped devices together so that the top plate is enlarged, that is, a size capable of simultaneously loading a plurality of battery-equipped devices.
  • the top plate can also be provided with a peripheral wall around it, and a battery built-in device can be set inside the peripheral wall to charge the built-in battery.
  • the power transmission coil 11 is wound in a spiral shape on a surface parallel to the upper surface plate 21 and radiates an alternating magnetic flux above the upper surface plate 21.
  • the power transmission coil 11 radiates an alternating magnetic flux orthogonal to the upper surface plate 21 above the upper surface plate 21.
  • the power transmission coil 11 is supplied with AC power from the AC power source 12 and radiates AC magnetic flux above the upper surface plate 21.
  • the power transmission coil 11 can increase the inductance by winding a wire around a core 15 made of a magnetic material.
  • the core 15 is made of a magnetic material such as ferrite having a high magnetic permeability, and has a bowl shape that opens upward.
  • the core 15 of the pot-shaped has a shape that connects the cylindrical portion 15A to place the center of the transmitting coil 11 wound spirally, a cylindrical portion 15B which is disposed outside the bottom.
  • the power transmission coil 11 having the core 15 can concentrate the magnetic flux to a specific portion and efficiently transmit power to the power reception coil 51.
  • the power transmission coil does not necessarily need to be provided with a core, and may be an air-core coil. Since the air-core coil is light, a moving mechanism for moving it on the inner surface of the upper plate can be simplified.
  • the power transmission coil 11 is substantially equal to the outer diameter of the power reception coil 51 and efficiently conveys power to the power reception coil 51.
  • the AC power supply 12 supplies, for example, high frequency power of 20 kHz to 1 MHz to the power transmission coil 11.
  • the AC power supply 12 is connected to the power transmission coil 11 via a flexible lead wire 16. This is because the power transmission coil 11 is moved so as to approach the power reception coil 51 of the battery built-in device 50 placed on the upper surface plate 21.
  • the AC power supply 12 includes an oscillation circuit and a power amplifier that amplifies the AC output from the oscillation circuit.
  • the power transmission coil 11 is moved by the moving mechanism 13 so as to approach the power reception coil 51.
  • the moving mechanism 13 in FIGS. 1 to 4 moves the power transmission coil 11 along the upper surface plate 21 in the X-axis direction and the Y-axis direction to approach the power receiving coil 51.
  • the moving mechanism 13 shown in the figure rotates the screw rod 23 by the servo motor 22 controlled by the position detection controller 14 to move the nut member 24 screwed into the screw rod 23, and the power transmission coil 11 is moved to the power receiving coil 51.
  • the servo motor 22 includes an X-axis servo motor 22A that moves the power transmission coil 11 in the X-axis direction, and a Y-axis servo motor 22B that moves the Y-axis direction.
  • the screw rod 23 includes a pair of X-axis screw rods 23A that move the power transmission coil 11 in the X-axis direction, and a Y-axis screw rod 23B that moves the power transmission coil 11 in the Y-axis direction.
  • the pair of X-axis screw rods 23A are arranged in parallel to each other, driven by the belt 25, and rotated together by the X-axis servomotor 22A.
  • the nut member 24 includes a pair of X-axis nut members 24A screwed into the respective X-axis screw rods 23A, and a Y-axis nut member 24B screwed into the Y-axis screw rods 23B.
  • the Y-axis screw rod 23B is coupled so that both ends thereof can be rotated to a pair of X-axis nut members 24A.
  • the power transmission coil 11 is connected to the Y-axis nut member 24B.
  • the moving mechanism 13 shown in the figure has a guide rod 26 disposed in parallel with the Y-axis screw rod 23B in order to move the power transmission coil 11 in the Y-axis direction in a horizontal posture. Both ends of the guide rod 26 are connected to the pair of X-axis nut members 24A and move together with the pair of X-axis nut members 24A. The guide rod 26 penetrates the guide portion 27 coupled to the power transmission coil 11 so that the power transmission coil 11 can be moved along the guide rod 26 in the Y-axis direction.
  • the power transmission coil 11 moves in the Y-axis direction in a horizontal posture via the Y-axis nut member 24 ⁇ / b> B and the guide portion 27 that move along the Y-axis screw rod 23 ⁇ / b> B and the guide rod 26 arranged in parallel to each other. To do.
  • the X-axis servo motor 22A rotates the X-axis screw rod 23A
  • the pair of X-axis nut members 24A move along the X-axis screw rod 23A
  • the Y-axis screw rod 23B and the guide rod 26 is moved in the X-axis direction.
  • the Y-axis servo motor 22B rotates the Y-axis screw rod 23B
  • the Y-axis nut member 24B moves along the Y-axis screw rod 23B, and moves the power transmission coil 11 in the Y-axis direction.
  • the guide part 27 connected to the power transmission coil 11 moves along the guide rod 26 to move the power transmission coil 11 in the Y-axis direction in a horizontal posture.
  • the rotation of the X-axis servomotor 22A and the Y-axis servomotor 22B can be controlled by the position detection controller 14, and the power transmission coil 11 can be moved in the X-axis direction and the Y-axis direction.
  • the charging stand of the present invention does not specify the moving mechanism as the above mechanism. This is because any mechanism that can move the power transmission coil in the X-axis direction and the Y-axis direction can be used as the moving mechanism.
  • the charging stand of the present invention does not specify the moving mechanism as a mechanism that moves the power transmission coil in the X-axis direction and the Y-axis direction. That is, the charging stand of the present invention has a structure in which a linear guide wall is provided on the upper plate, and a battery built-in device is placed along the guide wall, and the power transmission coil can be moved linearly along the guide wall. Because it can be done.
  • the power transmission coil can be moved linearly along the guide wall as a moving mechanism that can move the power transmission coil only in one direction, for example, the X-axis direction.
  • the position detection controller 14 detects the position of the battery built-in device 50 placed on the top plate 21.
  • the position detection controller 14 in FIGS. 1 to 4 detects the position of the power receiving coil 51 built in the battery built-in device 50, and causes the power transmitting coil 11 to approach the power receiving coil 51.
  • the position detection controller 14 generates a plurality of position detection coils 30 fixed to the inner surface of the upper surface plate 21, and generates a detection pulse for supplying a pulse signal as a position detection signal to the position detection coil 30.
  • a circuit 31, and an echo amplification circuit 32 that receives an echo signal that is excited by a pulse of a position detection signal supplied from the detection pulse generation circuit 31 to the position detection coil 30 and output from the power reception coil 51 to the position detection coil 30.
  • an identification circuit 33 for determining the position of the power receiving coil 51 from the echo signal received by the echo amplifier circuit 32.
  • the position detection coil 30 is composed of a plurality of rows of coils, and the plurality of position detection coils 30 are arranged on the back side of the top plate 21.
  • the position detection coil 30 is fixed to the inner surface of the upper surface plate 21 and can be disposed on the back side of the upper surface plate 21.
  • the position detection coil 30 includes a plurality of X-axis position detection coil 30A for detecting the X-axis direction position of the power receiving coil 51, and a plurality of Y-axis position detecting coil 30B for detecting the position of the Y-axis direction.
  • the X-axis position detection coil 30A has a loop shape elongated in the Y-axis direction, and the plurality of X-axis position detection coils 30A are fixed to the inner surface of the upper surface plate 21 at a predetermined interval.
  • the Y-axis position detection coil 30B has a loop shape elongated in the X-axis direction, and the plurality of Y-axis position detection coils 30B are fixed to the inner surface of the upper surface plate 21 at a predetermined interval.
  • the position detection coil 30 is arranged such that a part of the position detection coil 30 disposed adjacent to the position detection coil 30 is overlapped.
  • the position detection coil 30 of the elongated coil is displaced in a direction orthogonal to the longitudinal direction of the coil, and the adjacent position detection coils 30 are arranged so as to overlap each other.
  • the X-axis position detection coil 30A has an elongated loop shape having a linear portion extending in the Y-axis direction, and the plurality of X-axis position detection coils 30A are displaced in the X-axis direction by a predetermined amount of overlap. It arrange
  • the Y-axis position detection coil 30B has an elongated loop shape having a linear portion extending in the X-axis direction, and the plurality of Y-axis position detection coils 30B are displaced in the Y-axis direction by a predetermined amount of overlap. It arrange
  • FIG position detection coil 30 of 5 are overlapping amount of the position detection coil 30 which can produce adjacent to overlap one another (d), and 2/3 of the width of the elongated coil (W).
  • the position detection coils 30 adjacent to each other are arranged so as to be displaced in the lateral width direction of the coil by 1/3 of the lateral width (W) of the coil.
  • the position detection coil 30 has an area where two adjacent position detection coils 30 overlap each other with 2/3 of each position detection coil 30 (hatching A and hatching B in FIG. 7). display), and the three position detection coil 30 overlapping region of adjacent to each other, a third region of each position detection coil 30 (hatching a and the common portion of the hatching B in FIG. 7).
  • the overlapping amount (d) between adjacent position detection coils 30 is 2/3 of the width (W) of the elongated coil, but the position detection coils are adjacent to each other so as to overlap each other.
  • the overlap amount (d) between the position detection coils can be set to 1/2 to 9/10 of the lateral width (W) of the elongated coil.
  • a position detection coil in which the overlap amount (d) between adjacent position detection coils so as to overlap each other is 1 ⁇ 2 of the lateral width (W) of the coil is not shown, but two adjacent position detection coils overlap each other.
  • the area is a half of each position detection coil.
  • a position detection coil in which the overlap amount (d) between adjacent position detection coils so as to overlap each other is 3/4 of the lateral width (W) of the coil is not shown, but two adjacent position detection coils are not shown.
  • the overlapping area of each position detection coil becomes a 3/4 area, and the overlapping area of the three position detection coils adjacent to each other becomes a 2/4 area of each position detection coil, and the four position detections adjacent to each other.
  • a region where the coils overlap is a quarter of each position detection coil.
  • the lateral width (W) of the position detection coil 30 is substantially equal to the outer diameter (D) of the power receiving coil 51, or is larger than the outer diameter (D), or is smaller than the outer diameter (D). is doing.
  • the position detection coil 30 can detect the position of the power receiving coil 51 with higher accuracy by increasing the overlap amount (d) between the adjacent position detection coils 30 so as to overlap each other.
  • the detection pulse generation circuit 31 outputs a pulse signal to the position detection coil 30 at a predetermined timing.
  • the position detection coil 30 to which the pulse signal is input excites the power receiving coil 51 that approaches with the pulse signal.
  • the excited power receiving coil 51 outputs an echo signal to the position detection coil 30 with the energy of the flowing current. Accordingly, the position detection coil 30 located near the power receiving coil 51, as shown in FIG. 8, after the pulse signal is input, with a delay of a predetermined time, the echo signal from the receiving coil 51 is induced.
  • the echo signal induced in the position detection coil 30 is output to the identification circuit 33 by the echo amplification circuit 32.
  • the identification circuit 33 determines whether the power receiving coil 51 is approaching the position detection coil 30 with the echo signal input from the echo amplification circuit 32. When echo signals are induced in the plurality of position detection coils 30, the identification circuit 33 determines that the position detection coil 30 with the highest echo signal level is closest.
  • the position detection controller 14 shown in FIG. 5 connects each position detection coil 30 to the echo amplification circuit 32 via the multiplexer 34.
  • the position detection controller 14 switches the input side of the echo amplification circuit 32 in order by the multiplexer 34 and connects it to the plurality of position detection coils 30.
  • An echo signal can be detected.
  • an echo amplifier circuit can be connected to each position detection coil to detect an echo signal.
  • the position detection controller 14 in FIG. 5 connects the plurality of position detection coils 30 in order with the multiplexer 34 controlled by the identification circuit 33 and connects to the echo amplification circuit 32.
  • the detection pulse generation circuit 31 is connected to the input side of the echo amplification circuit 32, and sequentially outputs pulse signals to the position detection coil 30 via the multiplexer 34.
  • the level of the pulse signal output from the detection pulse generation circuit 31 to the position detection coil 30 is extremely higher than the echo signal from the power receiving coil 51.
  • the echo amplifier circuit 32 has a limiter circuit 35 made of a diode connected to the input side. The limiter circuit 35 limits the signal level of the pulse signal input from the detection pulse generation circuit 31 to the echo amplification circuit 32 and inputs it to the echo amplification circuit 32.
  • the echo signal having a low signal level is input to the echo amplifier circuit 32 without being limited.
  • the echo amplification circuit 32 amplifies and outputs both the pulse signal and the echo signal.
  • the echo signal output from the echo amplifier circuit 32 is a signal delayed from the pulse signal by a predetermined timing, for example, several ⁇ sec to several hundred ⁇ sec. Since the delay time that the echo signal is delayed from the pulse signal is a fixed time, the signal after a predetermined delay time from the pulse signal is used as an echo signal, and the receiving coil 51 approaches the position detection coil 30 from the level of this echo signal. Determine whether or not.
  • the echo amplification circuit 32 is an amplifier that amplifies an echo signal input from the position detection coil 30 and outputs the amplified echo signal to the identification circuit 33.
  • the echo amplification circuit 32 outputs a pulse signal and an echo signal to the identification circuit 33.
  • the echo amplification circuit 32 includes a gain adjustment circuit 37 that adjusts the amplification factor so that the echo signal is amplified linearly without being saturated.
  • the echo amplification circuit 32 whose amplification factor is specified by the gain adjustment circuit 37 amplifies the echo signal input from the position detection coil 30 and inputs it to the identification circuit 33.
  • the gain adjustment circuit 37 adjusts the amplification factor of the echo amplification circuit 32 so that the echo signal is output to the identification circuit 33 as a predetermined level.
  • the gain adjustment circuit 37 does not change the amplification factor of the echo amplification circuit 32 every time an echo signal is detected. First, when the battery built-in device 50 is set on the top plate 21 of the charging base 10, the amplification factor of the echo amplification circuit 32 is set to an optimum value, and thereafter the echo signal is amplified without changing the amplification factor. Output to the identification circuit 33.
  • the gain adjustment circuit 37 sets the amplification factor of the echo amplifying circuit 32 to an optimum value depending on the type of the battery built-in device 50, and is output from the power receiving coil 51 of the battery built-in device 50 to the BR position detection coil 30. This is to prevent the level of the echo signal from changing and the position of the power receiving coil 51 from being accurately detected.
  • the echo amplification circuit 32 in which the amplification factor is set to the optimum value does not change the amplification factor of the echo amplification circuit 32 after that and is specified to the optimum amplification factor. Detect position. Therefore, after the battery built-in device 50 is set, the gain adjustment circuit 37 sets the amplification factor of the echo amplification circuit 32 to the optimum value, and then the identification circuit 33 receives the echo signal input from the echo amplification circuit 32.
  • the position of the power receiving coil 51 is detected by the level. After the position is detected, the power transmission coil 11 is moved to the position of the power reception coil 51, power is transferred from the power transmission coil 11 to the power reception coil 51, and the battery 52 of the battery built-in device 50 is charged.
  • the gain adjustment circuit 37 does not saturate the echo signal induced in the position detection coil 30, and amplifies the echo signal of a small level to an optimum level and inputs the gain to the discrimination circuit 33 so that the echo amplification circuit 32 Set the amplification factor.
  • the level of the echo signal varies depending on the relative position between the power reception coil 51 and the position detection coil 30. In a state where the power receiving coil 51 is set at the center of the specific position detection coil 30, the level of the echo signal induced in the specific position detection coil 30 becomes maximum. Further, when the power receiving coil 51 is set across the two position detection coils 30, echo signals are output to the two position detection coils 30.
  • the gain adjustment circuit 37 is placed on both sides of the position detection coil 30 where the echo amplification circuit 32 is not saturated with the maximum level echo signal induced in any one of the position detection coils 30 and the maximum level echo signal is induced.
  • the amplification factor is set so that the sum of the levels of echo signals induced in the arranged position detection coils 30 is not saturated.
  • the gain adjustment circuit 37 amplifies the amplification factor of the echo amplification circuit 32, the level of the echo signal that amplifies and outputs the maximum level echo signal, and the echo signal induced in the position detection coils 30 on both sides of the maximum level echo signal.
  • the amplification factor of the echo amplifying circuit 32 is set so that both of the sums of the levels of echo signals that are amplified and output are within a set range with respect to the power supply voltage, for example 3/4 of the power supply voltage.
  • the gain adjustment circuit 37 can increase the setting range for specifying the level of the echo signal output from the echo amplification circuit 32 and can input a large level echo signal to the identification circuit 33.
  • the setting range of the output echo signal is increased, it becomes difficult for the echo amplification circuit 32 to amplify the echo signal linearly.
  • the setting range is reduced, the level of the echo signal input to the identification circuit 33 is reduced, and it becomes difficult for the identification circuit 33 to accurately detect the position of the power receiving coil 51.
  • the setting range in which the echo amplification circuit 32 outputs the echo signal that is, the amplification factor of the echo amplification circuit 32 can linearly amplify the echo signal input to the echo amplification circuit 32, and the identification circuit 33 can It is set so that the position can be detected accurately.
  • FIG. 9 shows a specific example of the echo amplification circuit 32 and the gain adjustment circuit 37.
  • the echo amplifier circuit 32 in this figure includes a differential amplifier 38, and the gain adjustment circuit 37 inputs an amplification factor adjustment voltage to one input terminal of the differential amplifier 38 to adjust the amplification factor of the differential amplifier 38.
  • the gain adjustment circuit 37 in this figure includes a voltage adjustment circuit 39 that smoothes a pulse signal output by PWM modulation from the identification circuit 33 and outputs a gain adjustment voltage.
  • the voltage adjustment circuit 39 converts the pulse signal output by PWM modulation from the identification circuit 33 into a direct current by a smoothing circuit 40 including a resistor 41 and a capacitor 42 and inputs the direct current to the base of the transistor 43.
  • Transistor 43 has a collector voltage to be input - electric resistance between the emitter is changed, by changing the voltage to be input to one terminal of the differential amplifier 38, to control the amount of negative feedback of the differential amplifier 38 Adjust the amplification factor.
  • the identification circuit 33 calculates the duty of the pulse signal output by PWM modulation from the level of the input echo signal. As described above, the identification circuit 33 specifies the duty of the pulse signal output by PWM modulation from the sum of the echo signal of the maximum level and the level of the echo signal induced in the position detection coils 30 on both sides thereof.
  • the amplification factor of the echo amplifier circuit 32 that is, the amplification factor of the differential amplifier 38 is specified.
  • the echo signal induced in the position detection coil 30 is input to the identification circuit 33 via the multiplexer 34.
  • the multiplexer 34 includes a switching element 34 ⁇ / b> A such as a transistor or FET that connects each position detection coil 30 to an identification circuit 33.
  • the multiplexer 34 sequentially turns on the switching elements 34 ⁇ / b> A and inputs the echo signals induced in the position detection coils 30 to the identification circuit 33 in order.
  • the switching element 34 ⁇ / b> A of the multiplexer 34 that inputs the echo signal of the position detection coil 30 to the identification circuit 33 has an electrical resistance in the on state. That is, there is an on-resistance.
  • the on-resistance of the switching element 34 ⁇ / b> A becomes a factor that attenuates an echo signal input from the position detection coil 30 to the identification circuit 33. Furthermore, the on-resistance of each switching element 34A constituting the multiplexer 34, in other words, each switching element 34A that connects each position detection coil 30 to the identification circuit 33 is in an unbalanced state. For example, the switching element 34A of the multiplexer 34 has an unbalance of several tens of percent in on-resistance. The imbalance of the on-resistance of the switching element 34A varies the level of the echo signal input from the position detection coil 30 to the identification circuit 33.
  • the switching element having a large on-resistance has a larger attenuation amount of the echo signal than the switching element having a low on-resistance, and lowers the level of the echo signal input to the identification circuit 33. Since the identification circuit 33 determines the position of the power receiving coil 51 from the level of the input echo signal, the level fluctuation of the echo signal caused by the multiplexer 34 causes an error in the position detection of the power receiving coil 51.
  • the charging stand 10 eliminates the imbalance of the internal resistance of each channel of the multiplexer 34 with the balance adjusting unit 44 shown in FIG.
  • the balance adjustment unit 44 inputs the echo signal of the same level from each channel of the multiplexer 34 to the identification circuit 33 in a state in which the echo signal of the same level is induced in each position detection coil 30, and the internal resistance of each channel is calculated. Equalize unbalance due to differences.
  • Balance adjusting section 44 the on-resistance large, that the level of the echo signal level of the echo signal input through the switching elements of larger channel attenuation, is input via the switching element of smaller channel attenuation amount Is corrected to be larger than that, and the imbalance between channels of the multiplexer 34 is eliminated.
  • the balance adjustment unit 44 sets the level of the echo signal input from the specific position detection coil 30 to the identification circuit 33 as a reference level, and the position of the identification circuit 33 from each position detection coil 30, that is, from each channel, with respect to this reference level.
  • the level of the echo signal input to is compared, and the imbalance between channels of the multiplexer 34 is corrected.
  • balance adjusting section 44 the average value of the echo signal input from the multiplexer 34 to the identification circuit 33, the maximum value, one of the minimum value as a reference level, relative to the reference level, the determination circuit 33 from each channel
  • the level of the echo signal input to is compared, and the imbalance between channels of the multiplexer 34 is eliminated.
  • the balance adjustment unit 44 corrects the level of the echo signal to which the identification circuit 33 is input 10% larger for a channel in which the level of the echo signal is 10% smaller than the reference level. That is, the balance adjustment unit 44, the identification circuit 33 is multiplied by the specific coefficients of the level of the echo signal inputted from each channel, to correct the level of the echo signal input, eliminating the unbalance of each channel To do. This coefficient can be detected by inputting an echo signal of the same level to all channels. A channel whose attenuation is large and the level of the echo signal input to the identification circuit 33 is small increases the coefficient, and the imbalance between the channels of the multiplexer 34 is eliminated.
  • the balance adjustment unit 44 uses the power transmission coil 11 to input echo signals of the same level to each channel of the multiplexer 34.
  • the balance adjustment unit 44 inputs a pulse signal to the position detection coil 30, excites the power transmission coil 11 with the input pulse signal, induces an echo signal from the excited power transmission coil 11 to the position detection coil 30, The same level of echo signal is induced in each channel of the multiplexer 34. While inducing an echo signal to the position detecting coil 30, the transmitting coil 11 is not connected to an AC power source 12, to connect the capacitor 45 constituting the resonance circuit 46 on both ends, constituting the resonant circuit 46.
  • the power transmission coils 11 are moved to the center of each position detection coil 30, and the power transmission coils 11 are moved to the center.
  • a pulse signal is output to the position detection coil 30 to induce an echo signal in the position detection coil 30.
  • the balance adjustment unit 44 In order to move the power transmission coil 11 to the center portion of the position detection coil 30, the balance adjustment unit 44 has a drive mechanism 47 that moves the power transmission coil 11 in the arrangement direction of the position detection coils 30.
  • the balance adjusting unit 44 shown in the drawing also uses the moving mechanism 13 that moves the power transmission coil as the driving mechanism 47.
  • the balance adjustment unit 44 controls the moving mechanism 13 that is the drive mechanism 47 to move the power transmission coil 11 in the arrangement direction of the position detection coils 30.
  • the balance adjustment unit 44 outputs a pulse signal from the position detection coil 30 to the power transmission coil 11.
  • the power transmission coil 11 is excited by this pulse signal, and an echo signal is output from the excited power transmission coil 11 to the position detection coil 30.
  • the level of the echo signal is detected, and unbalance due to the internal resistance of the multiplexer 34, that is, unbalance between channels of the multiplexer 34 is eliminated.
  • the drive mechanism 47 of the balance adjustment unit 44 moves the power transmission coils 11 sequentially to the center of each position detection coil 30.
  • the balance adjustment unit 44 stores the position of the power transmission coil 11.
  • a pulse signal is output to the position detection coil 30 in which the power transmission coil 11 is disposed in the center.
  • An echo signal is induced to the position detection coil 30 from the power transmission coil 11 excited by this pulse signal.
  • the level of the echo signal is detected, and a coefficient for canceling the imbalance between channels of the multiplexer 34 is detected.
  • the balance adjustment unit 44 sequentially moves the power transmission coil 11 to the center of each position detection coil 30, detects the attenuation amount of each channel of the multiplexer 34 connected to each position detection coil 30, and performs unbalance. Detect the coefficient to cancel.
  • the balance adjustment unit 44 first detects a coefficient for correcting the imbalance between channels of the multiplexer 34, and then corrects the level of the echo signal induced in each channel by this coefficient, thereby determining the position of the power receiving coil 51. To detect.
  • the identification circuit 33 includes an A / D converter 36 that converts a signal input from the echo amplification circuit 32 into a digital signal.
  • the digital signal output from the A / D converter 36 is calculated to detect an echo signal.
  • the identification circuit 33 detects a signal input after a specific delay time from the pulse signal as an echo signal, and further determines whether the power receiving coil 51 is approaching the position detection coil 30 from the level of the echo signal.
  • Discrimination circuit 33 controls the multiplexer 34 so as to connect the plurality of X-axis position detection coil 30A in order to echo amplifier circuit 32, detects the X-axis direction position of the power receiving coil 51.
  • Discrimination circuit 33 each connecting the respective X-axis position detection coils 30A to echo amplifier circuit 32, the X-axis position detection coil 30A connected to the identification circuit 33 outputs a pulse signal from the pulse signal specific It is determined whether or not the power receiving coil 51 is approaching the X-axis position detection coil 30A based on whether or not an echo signal is detected after the delay time.
  • the identification circuit 33 connects all the X-axis position detection coils 30A to the echo amplification circuit 32, and determines whether or not the power receiving coil 51 is close to each X-axis position detection coil 30A.
  • the identification circuit 33 can detect the position of the power receiving coil 51 in the X-axis direction from the X-axis position detection coil 30A that can detect an echo signal.
  • the identification circuit 33 determines the position of the power receiving coil 51 in the X-axis direction from the level of echo signals induced in the plurality of X-axis position detection coils 30A. Further, the identification circuit 33 similarly controls the Y-axis position detection coil 30B to detect the position of the power receiving coil 51 in the Y-axis direction.
  • the identification circuit 33 controls the moving mechanism 13 from the position in the X axis direction and the position in the Y axis direction to be detected, and moves the power transmission coil 11 to a position approaching the power reception coil 51.
  • the identification circuit 33 controls the X-axis servomotor 22 ⁇ / b> A of the moving mechanism 13 to move the power transmission coil 11 to the position of the power reception coil 51 in the X-axis direction.
  • the Y-axis servomotor 22B of the moving mechanism 13 is controlled to move the power transmission coil 11 to the position of the power reception coil 51 in the Y-axis direction.
  • the position detection controller 14 moves the power transmission coil 11 to a position approaching the power reception coil 51.
  • Charging stand of the present invention may be charged after approaching the transmitting coil 11 in the position detection controller 14 to the receiving coil 51, a battery 52 to power carrier to the receiving coil 51 from the power transmission coil 11.
  • the charging stand further accurately controls the position of the power transmission coil 11 to approach the power receiving coil 51, and then transports power to charge the battery 52.
  • each location of A memory circuit 77 is provided for storing the level of an echo signal that is induced after a predetermined time has elapsed by exciting the detection coil 30 with a pulse signal.
  • the position detection controller 64 as compared to the level of the echo signal to detect the level of the echo signal induced in each of the position detection coil 30, and stores the level of the detected echo signal in the storage circuit 77, The position of the power receiving coil 51 is detected.
  • the position detection controller 64 obtains the position of the power receiving coil 51 from the level of the echo signal induced in each position detection coil 30 as follows.
  • FIG. 12 shows the level of the echo signal induced in the X-axis position detection coil 30A in a state where the power receiving coil 51 is moved in the X-axis direction
  • the horizontal axis shows the position of the power receiving coil 51 in the X-axis direction.
  • the vertical axis indicates the level of the echo signal induced in each X-axis position detection coil 30A.
  • the position detection controller 64 detects the level of the echo signal induced in each X-axis position detection coil 30A, and obtains the position of the power receiving coil 51 in the X-axis direction. As shown in this figure, when the power receiving coil 51 is moved in the X-axis direction, the level of the echo signal induced in each X-axis position detection coil 30A changes.
  • the first X-axis position detection coils 30A when the power receiving coil 51 is in the middle of the first X-axis position detection coil 30A and the second X-axis position detection coil 30A, as shown by point a in FIG. 12, the first X-axis position detection coils 30A And the level of the echo signal induced in the second X-axis position detection coil 30A is the maximum and the same. Further, when the power receiving coil 51 is at a position deviated from the middle between the first X-axis position detection coil 30A and the second X-axis position detection coil 30A, the first X-axis position detection coil 30A and the second X-axis position The level ratio of the echo signal induced in the detection coil 30A changes. Therefore, the position of the power receiving coil 51 can be detected from the level ratio of echo signals induced in the first X-axis position detection coil 30A and the second X-axis position detection coil 30A.
  • the level of the echo signal induced in the second X-axis position detection coil 30A is , Become the strongest.
  • the level variation of the echo signal with respect to the movement distance of the power receiving coil 51 in the X-axis direction is small, and the level of the echo signal varies depending on other factors.
  • the position of the power receiving coil 51 is determined only by the level of the echo signal induced in the second X-axis position detection coil 30A, it cannot be accurately determined.
  • the identification circuit 33 when in this region, the second not only echo signals induced in the X-axis position detection coil 30A, the first X-axis position detection coils 30A and the third X-axis position detection coil
  • the position of the power receiving coil 51 is also determined from the level of the echo signal induced by 30A.
  • the power receiving coil 51 is located at the center of the second X-axis position detection coil 30A, the levels of the echo signals induced in the first X-axis position detection coil 30A and the third X-axis position detection coil 30A are equal. Alternatively, the level of the echo signal becomes 0 level.
  • the identification circuit 33 is applied to the first X-axis position detection coil 30A and the third X-axis position detection coil 30A in a state where the echo signal induced in the second X-axis position detection coil 30A is at the maximum level. If the levels of the induced echo signals are equal or both are 0 level, it is determined that the power receiving coil 51 is located at the center of the second X-axis position detection coil 30A. When the position of the power receiving coil 51 is slightly shifted from the center portion of the second X-axis position detection coil 30A, an echo signal that is induced in the first X-axis position detection coil 30A and the third X-axis position detection coil 30A. The level of changes.
  • the identification circuit 33 accurately detects the position of the power receiving coil 51 from the level ratio of echo signals induced in the first X-axis position detection coil 30A and the second X-axis position detection coil 30A. can do. This is because as the power receiving coil 51 moves toward the first X-axis position detection coil 30A, the level of the echo signal induced in the first X-axis position detection coil 30A increases.
  • the identification circuit 33 can accurately detect the position 51 of the power receiving coil from the level ratio of echo signals induced in the second and third X-axis position detecting coils 30A. This is because as the power receiving coil 51 moves toward the third X-axis position detection coil 30A, the level of the echo signal induced in the third X-axis position detection coil 30A increases.
  • the identification circuit 33 does not determine the position of the power receiving coil 51 only from the echo signal of the position detection coil 30 at the maximum level when the echo signal is at the maximum level.
  • the position of the power receiving coil 51 is determined in consideration of echo signals induced in the position detection coils 30 on both sides of the position detection coil 30 that detects the maximum level echo signal. Accordingly, the position of the power receiving coil 51 in the area A, which is the central portion of the position detection coil 30, can accurately detect even a slight deviation from the center of the position detection coil 30 at the maximum level.
  • the identification circuit 73 stores in the storage circuit 77 the level and level ratio of the echo signal induced in each X-axis position detection coil 30A with respect to the position of the power receiving coil 51 in the X-axis direction.
  • an echo signal is induced in one of the X-axis position detection coils 30A. Therefore, the identification circuit 73 detects that the power receiving coil 51 has been placed by an echo signal induced in the X-axis position detection coil 30 ⁇ / b> A, that is, that the battery built-in device 50 has been placed on the charging stand 10.
  • the level and the level ratio of the echo signal induced in one of the X-axis position detection coil 30A as compared to the level and the level ratio stored in the storage circuit 77, the position of the X-axis direction of the power receiving coil 51 Is accurately determined.
  • the above shows a method in which the identification circuit 73 detects the position of the power receiving coil 51 in the X-axis direction from the echo signal induced in the X-axis position detection coil 30A, but the position of the power receiving coil 51 in the Y-axis direction is also X. In the same manner as in the axial direction, it can be detected from the echo signal induced in the Y-axis position detection coil 30B.
  • the position detection controller 64 moves the power transmission coil 11 to the position of the power receiving coil 51 with the position signal from the identification circuit 73.
  • the identification circuit 73 of the charging stand can recognize and identify that the power receiving coil 51 of the battery built-in device 50 is mounted.
  • the power supply can be stopped assuming that a device other than the power receiving coil 51 (for example, a metal foreign object) of the battery built-in device 50 is mounted.
  • the power supply coil 51 of the battery built-in device 50 is not mounted and power is not supplied.
  • Charging stand 10 is in a state of being close to the power transmission coil 11 and controls the moving mechanism 13 in the position detection controller 14, 64 to the receiving coil 51, and supplies the AC power to the power transmission coil 11 with an alternating current power source 12.
  • the AC power of the power transmission coil 11 is transferred to the power reception coil 51 and used for charging the battery 52.
  • the battery built-in device 50 detects that the battery 52 is fully charged, it stops charging and transmits a full charge signal to the charging stand 10.
  • the battery built-in device 50 can output a full charge signal to the power receiving coil 51, transmit this full charge signal from the power receiving coil 51 to the power transmission coil 11, and transmit full charge information to the charging stand 10.
  • the battery device 50 outputs an AC signal of a frequency different from the AC power source 12 to the receiving coil 51, the charging stand 10 can detect the full charge by receiving the AC signal at the transmitting coil 11. Further, outputs a signal that the battery device 50 is modulated by the full charge signal a carrier wave of a specific frequency to the receiving coil 51, the charging stand 10 receives the carrier wave of a specific frequency, detects a full-charge signal by demodulating the signal You can also Furthermore, the battery built-in device can also transmit full charge information by wirelessly transmitting a full charge signal to the charging stand.
  • the battery built-in device has a built-in transmitter that transmits a full charge signal, and the charging stand has a built-in receiver that receives the full charge signal.
  • the position detection controller 14 shown in FIG. 6 incorporates a full charge detection circuit 17 that detects the full charge of the built-in battery 52.
  • the full charge detection circuit 17 detects a full charge signal output from the battery built-in device 50 to detect full charge of the battery 52.
  • the charging stand 10 on the upper surface plate 21 on which a plurality of battery built-in devices 50 can be placed is fully charged by sequentially switching the batteries 52 of the plurality of battery built-in devices 50.
  • the charging stand 10 first detects the position of the power receiving coil 51 of any of the battery built-in devices 50, makes the power transmitting coil 11 approach the power receiving coil 51, and fully charges the battery 52 of the battery built-in device 50. To do.
  • the position detection controller 14 is set to a second position different from the battery built-in device 50.
  • the position of the power receiving coil 51 of the battery built-in device 50 is detected, and the moving mechanism 13 is controlled to bring the power transmitting coil 11 closer to the power receiving coil 51 of the second battery built-in device 50. In this state, power is transferred to the battery 52 of the second battery-equipped device 50, and the battery 52 is fully charged. Further, when the battery 52 of the second battery built-in device 50 is fully charged and the full charge detection circuit 17 receives the full charge signal from the second battery built-in device 50, the position detection controller 14 further performs the third operation. detects the receiving coil 51 of the battery device 50 of the receiving coil 51 of the third battery device 50 controls the moving mechanism 13 is brought closer to the transmitting coil 11, the battery 52 of the battery device 50 Fully charge.
  • the battery built-in devices 50 are sequentially switched to fully charge the built-in battery 52.
  • the charging stand 10 stores the position of the fully-charged battery built-in device 50 and does not charge the battery 52 of the fully-charged battery built-in device 50.
  • the charging stand 10 stops the operation of the AC power supply 12 and stops the charging of the batteries 52.
  • the charging is stopped when the battery 52 of the battery built-in device 50 is fully charged.
  • the charging may be stopped when the battery 52 reaches a predetermined capacity. .
  • the above moving mechanism 13 moves the power transmission coil 11 in the X-axis direction and the Y-axis direction to move the power transmission coil 11 to a position closest to the power receiving coil 51.
  • the movement mechanism is in the X-axis direction.
  • the power transmission coil is moved in the Y-axis direction and the position of the power transmission coil is not specified as a structure for approaching the power reception coil, and the power transmission coil can be moved in various directions to approach the power reception coil.
  • the charging stand according to the present invention can be suitably used not only for charging a mobile phone or a portable music player but also for charging an assist bicycle or an electric vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

[Problème] Détecter avec précision la position d'une bobine de réception électrique même lorsque les niveaux des signaux d'écho guidés par les bobines de détection de position changent. [Solution] Dans une plate-forme de charge, la position de la bobine de réception électrique (51) d'un dispositif (50) à batterie intégrée et placé sur une plaque de surface supérieure (21) est détectée au moyen d'un dispositif de commande de détection de position (14) et l'énergie est délivrée par le rapprochement de la bobine de transmission électrique (11) de la bobine de réception électrique (51) sous l'effet de la commande d'un mécanisme de déplacement (13). Le dispositif de détection électrique (14) fournit un signal d'impulsion provenant d'un circuit de génération d'impulsion (31) à une pluralité de bobines de détection de position (30) disposées sur la plaque de surface supérieure (21) et détermine la position de la bobine de réception (51) avec un circuit d'identification (33) par la réception avec un circuit amplificateur d'écho (32) des signaux d'écho guidés par les bobines de détection de position en provenance de la bobine de réception électrique (51). Le circuit amplificateur d'écho (32) est doté d'un circuit d'ajustement de gain (37) conçu pour ajuster le gain de manière que les signaux d'écho entrés soient amplifiés linéairement sans saturation. Les signaux d'écho sont entrés dans le circuit d'identification (33) après que le circuit amplificateur d'écho (32) dont le gain est spécifié amplifie les signaux d'écho entrés par les bobines de détection de position (30).
PCT/JP2011/079618 2011-03-30 2011-12-21 Plate-forme de charge Ceased WO2012132143A1 (fr)

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JP2011-076865 2011-03-30

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015002656A (ja) * 2013-06-18 2015-01-05 パナソニック株式会社 無接点充電装置、プログラム、および、無接点充電装置を搭載した車両
CN109591630A (zh) * 2018-12-18 2019-04-09 深圳创维汽车智能有限公司 无线充电状态的提示方法、终端、系统及可读存储介质
CN113263941A (zh) * 2021-06-30 2021-08-17 奇瑞商用车（安徽）有限公司 一种汽车无线充电控制方法和系统
CN113459836A (zh) * 2021-06-16 2021-10-01 重庆市计量质量检测研究院 一种用于电动汽车充电的agv智能无线充电装置
CN114940093A (zh) * 2022-05-30 2022-08-26 重庆大学 基于正交辅助线圈的电动汽车充电位置对准方法及系统
WO2025115959A1 (fr) * 2023-12-01 2025-06-05 パナソニックＩｐマネジメント株式会社 Procédé et programme de commande

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07167876A (ja) * 1993-12-15 1995-07-04 Nippondenso Co Ltd センサ信号処理装置
JP2002232283A (ja) * 2001-01-31 2002-08-16 Keyence Corp 光電スイッチ
JP2009247194A (ja) * 2007-12-18 2009-10-22 Sanyo Electric Co Ltd 充電台
JP2010192973A (ja) * 2009-02-16 2010-09-02 Hitachi High-Technologies Corp アナログ入出力回路及び真空処理装置
JP2010288429A (ja) * 2009-06-15 2010-12-24 Sanyo Electric Co Ltd 充電台

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07167876A (ja) * 1993-12-15 1995-07-04 Nippondenso Co Ltd センサ信号処理装置
JP2002232283A (ja) * 2001-01-31 2002-08-16 Keyence Corp 光電スイッチ
JP2009247194A (ja) * 2007-12-18 2009-10-22 Sanyo Electric Co Ltd 充電台
JP2010192973A (ja) * 2009-02-16 2010-09-02 Hitachi High-Technologies Corp アナログ入出力回路及び真空処理装置
JP2010288429A (ja) * 2009-06-15 2010-12-24 Sanyo Electric Co Ltd 充電台

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015002656A (ja) * 2013-06-18 2015-01-05 パナソニック株式会社 無接点充電装置、プログラム、および、無接点充電装置を搭載した車両
CN109591630A (zh) * 2018-12-18 2019-04-09 深圳创维汽车智能有限公司 无线充电状态的提示方法、终端、系统及可读存储介质
CN113459836A (zh) * 2021-06-16 2021-10-01 重庆市计量质量检测研究院 一种用于电动汽车充电的agv智能无线充电装置
CN113263941A (zh) * 2021-06-30 2021-08-17 奇瑞商用车（安徽）有限公司 一种汽车无线充电控制方法和系统
CN114940093A (zh) * 2022-05-30 2022-08-26 重庆大学 基于正交辅助线圈的电动汽车充电位置对准方法及系统
WO2025115959A1 (fr) * 2023-12-01 2025-06-05 パナソニックＩｐマネジメント株式会社 Procédé et programme de commande

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