[go: up one dir, main page]

WO2014030689A1 - Dispositif de transmission de puissance sans contact et appareil de réception de puissance - Google Patents

Dispositif de transmission de puissance sans contact et appareil de réception de puissance Download PDF

Info

Publication number
WO2014030689A1
WO2014030689A1 PCT/JP2013/072354 JP2013072354W WO2014030689A1 WO 2014030689 A1 WO2014030689 A1 WO 2014030689A1 JP 2013072354 W JP2013072354 W JP 2013072354W WO 2014030689 A1 WO2014030689 A1 WO 2014030689A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
value
storage unit
unit
charging
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/JP2013/072354
Other languages
English (en)
Japanese (ja)
Inventor
裕輝 恒川
古池　剛
中島　豊
勝永　浩史
田口　雄一
博樹 戸叶
啓介 松倉
琢磨 小野
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.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of WO2014030689A1 publication Critical patent/WO2014030689A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • B60L53/122—Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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—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—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/933—
    • 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
    • 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

  • This disclosure relates to a non-contact power transmission device.
  • a non-contact power transmission device that does not use a power cord or a power transmission cable
  • a device using magnetic field resonance is known.
  • a non-contact power transmission device disclosed in Japanese Patent Application Laid-Open No. 2009-106136 includes a power transmission device having an AC power source and a primary resonance coil to which AC power is input from the AC power source.
  • the non-contact power transmission device of the above document includes a power receiving device having a primary side resonance coil and a secondary side resonance coil capable of magnetic field resonance. When the primary side resonance coil and the secondary side resonance coil perform magnetic field resonance, AC power is transmitted from the power transmission device to the power reception device, and the vehicle battery as a power storage unit provided in the power reception device is charged. .
  • the power value suitable for the charging may vary.
  • a contactless power transmission device includes an AC power source that outputs AC power; a primary side resonance that includes a primary side coil and a primary side capacitor and that receives the AC power.
  • a secondary side resonance unit having a secondary coil and a secondary capacitor and capable of receiving the AC power from the primary side resonance unit in a non-contact manner; received by the secondary side resonance unit
  • a rectifying unit that rectifies the AC power; a power storage unit to which the DC power rectified by the rectifying unit is input; and variably controlling at least one of the inductance of the secondary coil and the capacitance of the secondary capacitor.
  • a control unit that allows DC power having a power value suitable for charging the power storage unit to be input to the power storage unit.
  • At least one of the inductance of the secondary coil and the capacitance of the secondary capacitor is variably controlled, whereby the impedance from the output terminal of the AC power supply to the power storage unit is adjusted and input to the power storage unit.
  • the power value of the DC power is a power value suitable for charging. Thereby, the power storage unit can be charged appropriately.
  • the present disclosure it is possible to realize adjustment of the power value of DC power input to the power storage unit while using an AC power source that cannot change the power value of AC power output internally. it can.
  • the AC power supply of the present disclosure is likely to have a simple configuration as compared with an AC power supply that can change the power value of the AC power output in the AC power supply. Therefore, in the present disclosure, it is possible to simplify the configuration of the AC power supply while inputting DC power having a power value suitable for charging to the power storage unit.
  • the power storage unit is combined with at least one of the inductance of the secondary coil and the capacitance of the secondary capacitor. It is possible to widen the variable range of the power value of the DC power input to the. Furthermore, in the configuration where the impedance of the power storage unit fluctuates due to the change in the power value of the AC power output from the AC power supply, the power suitable for charging is caused by the fluctuation of the impedance of the power storage unit. There may be a case where the value of direct-current power is not input to the power storage unit.
  • DC power having a power value can be input to the power storage unit.
  • the power value suitable for charging the power storage unit may vary, and the control unit variably controls at least one of the inductance of the secondary coil and the capacitance of the secondary capacitor.
  • the power value of the DC power input to the power storage unit is configured to approach the power value suitable for charging the power storage unit.
  • the control unit variably controls at least one of the inductance of the secondary coil and the capacitance of the secondary capacitor.
  • FIG. 1 is a circuit diagram of the contactless power transmission device according to the first embodiment.
  • FIG. 2 is a circuit diagram of the non-contact power transmission apparatus according to the second embodiment.
  • the non-contact power transmission device (non-contact power transmission system) 10 includes a ground-side device 11 provided on the ground and a vehicle-side device 21 mounted on the vehicle.
  • the ground side device 11 corresponds to a primary side device (power transmission device, power transmission device)
  • the vehicle side device 21 corresponds to a secondary side device (power reception device, power reception device).
  • the ground side device 11 includes a high frequency power source 12 (AC power source) capable of outputting high frequency power (AC power) having a predetermined frequency.
  • the high frequency power source 12 is configured to output high frequency power using system power.
  • the high frequency power supply 12 includes an AC / DC converter 12a that converts system power into DC power, and a DC / RF converter 12b that converts DC power into high frequency power.
  • Each of these converters 12a and 12b has a switching element, and operates by switching (ON / OFF) of the switching element. That is, the high-frequency power source 12 is a switching power source that obtains high-frequency power of the predetermined frequency by switching of the switching element.
  • the high-frequency power output from the high-frequency power source 12 is transmitted to the vehicle-side device 21 in a non-contact manner, and used for charging the vehicle battery 22 (power storage unit) provided in the vehicle-side device 21.
  • the non-contact power transmission device 10 includes a power transmitter 13 (primary-side resonance unit) provided in the ground-side device 11 to perform power transmission between the ground-side device 11 and the vehicle-side device 21. And a power receiver 23 (secondary resonance unit) provided in the vehicle-side device 21. High frequency power is input to the power transmitter 13.
  • the power transmitter 13 and the power receiver 23 are configured to be capable of magnetic field resonance.
  • the power transmitter 13 includes a resonance circuit including a primary coil 13a and a primary capacitor 13b connected in parallel.
  • the power receiver 23 is composed of a resonance circuit including a secondary coil 23a and a secondary capacitor 23b connected in parallel.
  • the resonance frequency of the power transmitter 13 and the power receiver 23 is the same.
  • the power transmitter 13 when high-frequency power is input from the high-frequency power source 12 to the power transmitter 13 (primary coil 13a), the power transmitter 13 and the power receiver 23 (secondary coil 23a) undergo magnetic field resonance. Thereby, the power receiver 23 receives a part of the energy of the power transmitter 13. That is, the power receiver 23 receives high frequency power from the power transmitter 13.
  • the vehicle-side device 21 includes a rectifier 24 as a rectifier that rectifies high-frequency power received by the power receiver 23 into DC power.
  • the vehicle battery 22 is composed of, for example, a plurality of battery cells connected in series, and is charged when DC power is input from the rectifier 24.
  • the charging mode of the vehicle battery 22 includes normal charging and push-in charging.
  • Normal charging is a charging mode that is performed from the start of charging until the charging amount of the vehicle battery 22 reaches a predetermined threshold amount.
  • Push-in charging is a charging mode that is performed based on the amount of charge of the vehicle battery 22 being equal to or greater than the threshold amount and compensates (reduces) the variation in capacity of each battery cell.
  • a detection sensor 25 that detects the amount of charge of the vehicle battery 22 is provided.
  • the detection result of the detection sensor 25 is input to a vehicle-side controller 26 as a control means (control unit) provided in the vehicle-side device 21. Thereby, the vehicle-side controller 26 can grasp the charge amount of the vehicle battery 22.
  • the ground side device 11 is provided with a power source side controller 14 capable of wireless communication with the vehicle side controller 26.
  • the power supply side controller 14 determines whether or not to output high frequency power from the high frequency power supply 12 through exchanging information with the vehicle side controller 26.
  • the high frequency power supply 12 is a power supply that cannot change the voltage value and current value of the high frequency power output in the high frequency power supply 12. In other words, there is only one power value that can be set in the high-frequency power source 12.
  • the load 30 from the output terminal of the high frequency power supply 12 to the vehicle battery 22 is a single load 30, the high frequency power output from the high frequency power supply 12 is input to the load 30.
  • the reference value (initial value) of the impedance Zin of the load 30 is set so that the high-frequency power source 12 outputs high-frequency power having a power value suitable for normal charging of the vehicle battery 22 (hereinafter referred to as set value power). Yes.
  • the set value power is high-frequency power having a power value necessary for inputting DC power having a power value suitable for normal charging (hereinafter referred to as normal charging power) to the vehicle battery 22. More specifically, the power value of the high-frequency power output from the high-frequency power supply 12 varies according to the impedance Zin of the load 30. If the power value of the high-frequency power output from the high-frequency power source 12 varies, the power value of the DC power input to the vehicle battery 22 also varies. For example, when the impedance Zin of the load 30 is larger than the reference value, DC power having a power value smaller than the power value of the normal charging power is input to the vehicle battery 22.
  • the impedance Zin of the load 30 depends on the capacitance of the secondary capacitor 23b. Specifically, when the capacitance of the secondary side capacitor 23b decreases, the impedance Zin of the load 30 decreases, and when the capacitance of the secondary side capacitor 23b increases, the impedance Zin of the load 30 increases.
  • the secondary side capacitor 23b in the power receiver 23 is configured to have a variable capacitance.
  • the ground side device 11 is provided with a measuring device 40 as a measuring means (measuring unit) for measuring the power value of the high frequency power output from the high frequency power source 12.
  • the measuring device 40 is provided at the output end of the high frequency power source 12 (between the high frequency power source 12 and the power transmitter 13).
  • the measuring instrument 40 measures the output voltage and output current of the high frequency power supply 12 and transmits the measurement result to the power supply side controller 14.
  • the vehicle-side controller 26 variably controls (changes) the capacitance of the secondary-side capacitor 23b based on the measurement result of the measuring instrument 40, in other words, the power value of the direct-current power input to the vehicle battery 22.
  • the power value of the high frequency power output from the high frequency power supply 12 is adjusted.
  • the vehicle-side controller 26 grasps the measurement result of the measuring instrument 40 by exchanging information with the power supply-side controller 14.
  • the vehicle-side controller 26 adjusts the impedance Zin of the load 30 by variably controlling the capacitance of the secondary-side capacitor 23b based on the measurement result of the measuring instrument 40, and the high-frequency power having a power value different from the set value power. For example, the adjustment power is output.
  • the adjusted power is a high-frequency power having a power value necessary for causing the vehicle battery 22 to input “push-in charging power” that is DC power having a power value suitable for indentation charging.
  • the reference value (initial value) of the capacitance of the secondary capacitor 23 b is set so that the resonance frequency of the power receiver 23 is the same as the resonance frequency of the power transmitter 13.
  • the reference value of the impedance Zin of the load 30 is a value set under the condition that the capacitance of the secondary capacitor 23b is the reference value.
  • each controller 14, 26 grasps the current charge amount of the vehicle battery 22 when the vehicle is arranged such that the relative position of the power transmitter 13 and the power receiver 23 is the reference position. Then, charge control according to the charge amount is performed.
  • the vehicle-side controller 26 determines whether or not the current charge amount is larger than a predetermined threshold amount. When the current charge amount is smaller than the threshold amount, the vehicle-side controller 26 variably controls the secondary-side capacitor 23b so that the capacitance of the secondary-side capacitor 23b becomes the reference value so that the set value power is output from the high-frequency power source 12. . On the other hand, the vehicle-side controller 26 variably controls the capacitance of the secondary-side capacitor 23b so that the adjustment power is output from the high-frequency power source 12 when the current charge amount is equal to or greater than the threshold amount.
  • the vehicle-side controller 26 periodically grasps the charge amount of the vehicle battery 22 during charging.
  • the vehicle side controller 26 variably controls the capacitance of the secondary side capacitor 23b.
  • the high-frequency power output from the high-frequency power source 12 is switched from the set value power to the adjusted power.
  • DC power (push-in charge power) corresponding to the adjusted power is input to the vehicle battery 22 (push-in charge).
  • the vehicle controller 26 transmits a stop request signal to the power supply controller 14.
  • the power supply controller 14 stops the output of the high frequency power by controlling the high frequency power supply 12 when receiving the stop request signal. Thereby, charging of the battery 22 for vehicles is complete
  • the capacitance of the secondary side capacitor 23b is variably controlled, so that the impedance Zin of the load 30 is adjusted, and the power value of the DC power input to the vehicle battery 22 (output from the high frequency power source 12). Power value of the high-frequency power to be adjusted). Thereby, the power value of the DC power input to the vehicle battery 22 can be adjusted without changing the voltage value or current value of the high-frequency power output from the high-frequency power source 12 in the high-frequency power source 12.
  • the power value suitable for charging the vehicle battery 22 varies depending on the charging mode (normal charging, push-in charging).
  • the vehicle-side controller 26 variably controls the capacitance of the secondary-side capacitor 23b, so that the power value of the DC power input to the vehicle battery 22 is suitable for charging the vehicle battery 22. It can be said that it is close to the power value.
  • the embodiment described in detail above has the following excellent effects.
  • the embodiment adjusts the impedance Zin of the load 30 by making the capacitance of the secondary side capacitor 23b variable and variably controlling the capacitance of the secondary side capacitor 23b, and charging (normal charging and pushing in) through it.
  • DC power having a power value suitable for both charging is input to the vehicle battery 22.
  • a component for example, a DC / DC converter
  • varies the power value of the high-frequency power output from the high-frequency power source 12 can be omitted. Therefore, it is possible to simplify the configuration of the high frequency power supply 12 while inputting DC power having a power value suitable for charging to the vehicle battery 22.
  • the capacitance of the secondary-side capacitor 23b was adopted as a means for adjusting the impedance Zin of the load 30. Thereby, the electric power value of the direct-current power input into the vehicle battery 22 can be adjusted using the existing configuration.
  • the vehicle controller 26 adjusts the power value of the high frequency power output from the high frequency power supply 12 by variably controlling the capacitance of the secondary capacitor 23b.
  • the vehicle controller 26 variably controls the capacitance of the secondary capacitor 23b.
  • the power value of the high-frequency power received by the secondary coil 23a is adjusted.
  • the high frequency power supply 52 of the present embodiment is configured such that a plurality of types of high frequency power having different power values are output by variably controlling (changing) the voltage value in the high frequency power supply 52.
  • the high-frequency power source 52 includes an AC / DC converter 52a and a DC / RF converter 52b, and a DC / DC converter 52c provided between the AC / DC converter 52a and the DC / RF converter 52b. (Changing means or changing unit).
  • the DC / DC converter 52c has a switching element 52cc.
  • the DC / DC converter 52c changes the voltage value of the DC power converted by the AC / DC converter 52a to a different voltage value based on switching (ON / OFF) of the switching element 52cc, specifically, the duty ratio of ON / OFF of the switching element 52cc.
  • the high frequency power supply 52 outputs high frequency power having a power value corresponding to the voltage value of the direct current power output from the DC / DC converter 52c. Since the voltage value of the DC power output from the DC / DC converter 52c is defined by the duty ratio, the power value of the high frequency power output from the high frequency power supply 52 is defined by the duty ratio.
  • the power supply side controller 14 changes the power value of the high frequency power output from the high frequency power supply 52 according to the situation. For example, when the current charge amount is smaller than the threshold amount in a state where charging is performed, the vehicle-side controller 26 transmits a first request signal to the power supply-side controller 14. On the other hand, when the current charge amount is equal to or greater than the threshold amount, the vehicle controller 26 transmits a second request signal to the power supply controller 14.
  • the DC / DC converter 52c (on / off duty of the switching element 52cc) is set so that the set value power similar to that of the first embodiment is output from the high frequency power supply 52. Ratio). Thereby, normal charging can be performed.
  • the power supply side controller 14 controls the DC / DC converter 52c so that the adjustment power similar to that of the first embodiment is output from the high frequency power supply 52. Thereby, it is possible to perform indentation charge. That is, the DC / DC converter 52c controls the voltage value in the high-frequency power source 52 so that the power value of the DC power input to the vehicle battery 22 approaches the power value suitable for charging the vehicle battery 22. To change the power value of the high-frequency power output from the high-frequency power source 52.
  • the vehicle battery 22 is a fluctuating load whose impedance fluctuates in accordance with the input DC power value. For this reason, when the power value of the high-frequency power output from the high-frequency power source 52 changes and the power value of the DC power input to the vehicle battery 22 varies, the impedance of the vehicle battery 22 varies, and the high-frequency power source The impedance Zin of the load 30 from the output terminal 52 to the vehicle battery 22 varies. Then, although the high frequency power supply 52 is adjusted so that the adjusted power is output, the power value of the DC power input to the vehicle battery 22 may deviate from the power value of the push-in charging power. Can occur.
  • the variable control of the capacitance of the secondary capacitor 23b is performed according to the fluctuation of the impedance Zin of the load 30 caused by the fluctuation of the power value of the DC power input to the vehicle battery 22.
  • the vehicle-side controller 26 acquires the measurement result of the measuring instrument 40 by exchanging information with the power-source-side controller 14, and the power value of the high-frequency power output from the high-frequency power source 52 based on the measurement result. To figure out.
  • the vehicle-side controller 26 determines that the power value of the high frequency power output from the high frequency power supply 52 is the power of the adjustment power.
  • the capacitance of the secondary side capacitor 23b is variably controlled so as to approach the value.
  • the vehicle-side controller 26 variably controls the capacitance of the secondary-side capacitor 23b, thereby changing the power value of the DC power input to the vehicle battery 22 to the power suitable for charging the vehicle battery 22. Approach the value (the power value of the indentation charging power).
  • the high frequency power supply 52 can output a plurality of types of high frequency power having different power values by variably controlling the voltage value in the high frequency power supply 52.
  • the high-frequency power output from the high-frequency power source 52 is changed from the set value power to the adjusted power in the high-frequency power source 52, the secondary side so that the high-frequency power corresponds to the fluctuation of the impedance Zin of the load 30.
  • Variable control of the capacitance of the capacitor 23b is performed. Specifically, the capacitance of the secondary side capacitor 23b is adjusted such that the power value of the high frequency power input from the high frequency power supply 52 to the load 30 matches the power value of the adjusted power. Thereby, even if the impedance of the vehicle battery 22 fluctuates, DC power having a power value suitable for each charging mode can be input to the vehicle battery 22.
  • the capacitance of the secondary side capacitor 23b is variably controlled so that the high frequency power corresponds to the fluctuation of the impedance Zin of the load 30 accompanying the change from the set value power to the adjusted power by the DC / DC converter 52c. It was supposed to be configured. Specifically, the capacitance of the secondary-side capacitor 23b is variably controlled so that the power value of the high-frequency power output from the high-frequency power supply 52 approaches the power value of the adjustment power. Thereby, even if the impedance Zin of the load 30 fluctuates, direct current power (push-up charge power) having a power value suitable for push-in charge can be input to the vehicle battery 22.
  • the vehicle-side controller 26 varies the power value of the input power of the vehicle battery 22 due to the variation of the impedance of the vehicle battery 22 due to the change from the set value power to the adjusted power by the DC / DC converter 52c. It can be said that the capacitance of the secondary-side capacitor 23b is variably controlled so as to be reduced.
  • the impedance Zin of the load 30 can be adjusted by variably controlling the capacitance of the secondary side capacitor 23b, and as a result, the power value of the high frequency power output from the high frequency power supply 52 can be adjusted. it can. That is, there are both a voltage value in the high frequency power supply 52 (on / off duty ratio of the switching element 52cc) and a capacitance of the secondary capacitor 23b as parameters for changing the power value of the high frequency power output from the high frequency power supply 52. Therefore, by combining both, the fluctuation range (variable width) of the power value of the high-frequency power can be widened. Thereby, even if it is a case where the electric power value (the maximum value) used for electric power transmission is changed due to the change of a specification etc., it can respond to the change of an electric power value suitably.
  • the capacitance of the secondary side capacitor 23b is adopted as the one that adjusts the impedance Zin of the load 30, but is not limited to this.
  • the non-contact power transmission system 10 may be configured to adjust the impedance Zin of the load 30 by changing the inductance of the secondary coil 23a and variably controlling the inductance.
  • the relative position of the power transmitter 13 and the power receiver 23 is the reference position, but is not limited to this.
  • the embodiment may be performed, for example, when the relative position between the two is shifted from the reference position.
  • the capacitance of the secondary capacitor 23b may be variably controlled based on the measurement result of the measuring instrument 40 so that DC power having a power value suitable for charging is input to the vehicle battery 22.
  • Embodiments may output high-frequency power of other power values in addition to (or instead of) the adjusted power.
  • the secondary side capacitor 23b is configured so that DC power having a power value larger than the normal charging power value is input to the vehicle battery 22.
  • the capacitance may be variably controlled.
  • the measuring device 40 is provided at the output end of the high-frequency power supplies 12 and 52.
  • the embodiment is not limited to this, and the setting location of the measuring device 40 is arbitrary.
  • the contactless power transmission system 10 may be configured so that the measuring device 40 is provided in the vehicle-side device 21 and the power value of the high-frequency power output from the high-frequency power sources 12 and 52 is estimated based on the measurement result. Good.
  • the vehicle-side device 21 may be provided with a measuring instrument that measures the power value of the DC power input to the vehicle battery 22 and outputs the measurement result to the vehicle-side controller 26. In this case, since it is not necessary to exchange information related to the measurement result between the power supply side controller 14 and the vehicle side controller 26, the processing can be simplified.
  • the non-contact power transmission system 10 is configured such that the vehicle controller 26 performs variable control of the capacitance of the secondary capacitor 23b.
  • the control subject is arbitrary, and for example, a dedicated control circuit may be provided separately from the vehicle-side controller 26.
  • the non-contact power transmission system 10 may be configured such that the power supply controller 14 controls the drive circuit by providing a drive circuit that varies the capacitance of the secondary capacitor 23b.
  • the measuring device 40 is provided, but the measuring device 40 is not limited to this, and the measuring device 40 may be omitted.
  • the power value of the DC power input to the vehicle battery 22 is a power value suitable for charging (for example, pushing in). It is possible to grasp (calculate) the capacitance of the secondary capacitor 23b, which is the power value of the charging power. Therefore, the power value suitable for charging the vehicle battery 22 and the capacitance of the secondary capacitor 23b for inputting the power value suitable for the charging to the vehicle battery 22 are set in association with each other.
  • the stored map is stored in the memory.
  • the vehicle side controller 26 specifies the capacitance of the secondary side capacitor
  • the voltage waveform of the high frequency power output from the high frequency power supplies 12 and 52 is arbitrary, such as a pulse waveform or a sine wave.
  • each capacitor 13b, 23b is provided, but these may be omitted.
  • magnetic resonance is performed using the parasitic capacitances of the coils 13a and 23a, and the inductance of the secondary coil 23a is made variable.
  • the resonance frequency of the power transmitter 13 is set to be the same as the resonance frequency of the power receiver 23, but is not limited to this.
  • the resonance frequency of the power transmitter 13 and the resonance frequency of the power receiver 23 may be different from each other within a range in which power transmission is possible.
  • magnetic field resonance is used to realize non-contact power transmission.
  • the present invention is not limited to this, and electromagnetic induction may be used.
  • condenser 13b by electromagnetic induction may be provided in the power transmission device 13 separately.
  • the resonant circuit is configured to receive high frequency power from the primary side coupling coil by electromagnetic induction.
  • the power receiver 23 is provided with a secondary coupling coil that is coupled by electromagnetic induction to a resonance circuit composed of the secondary coil 23a and the secondary capacitor 23b. High frequency power may be extracted from the resonance circuit.
  • the high frequency power supplies 12 and 52 may be a voltage source having a constant voltage value, or may be a current source having a constant current value.
  • the high frequency power supply 52 is configured to output a plurality of types of high frequency power having different power values by variably controlling the voltage value in the high frequency power supply 52.
  • the high frequency power supply 52 may be configured to output a plurality of types of high frequency power having different power values by variably controlling the current value in the high frequency power supply 52.
  • “Variable control (change) of voltage value or current value in the high frequency power supply 52” can be said to variably control the voltage value or current value of the AC power (system power) input to the high frequency power supply 52. That is, it can be said that the high frequency power supply 52 is configured to output a plurality of types of high frequency power having different power values by variably controlling the voltage value or current value of the input AC power.
  • the non-contact power transmission device 10 is applied to a vehicle, but is not limited thereto, and may be applied to other devices.
  • the non-contact power transmission device 10 may be applied to charge a battery of a mobile phone.
  • the high-frequency power received by the power receiver 23 may be used for purposes other than charging the vehicle battery 22.
  • the high frequency power may be used to drive another device having a predetermined fixed impedance.
  • the vehicle side device 21 may be provided with a secondary side adjuster that adjusts impedance between the power receiver 23 and the rectifier 24 in detail.
  • the ground side device 11 may be provided with a primary side adjuster for adjusting impedance between the high frequency power supplies 12 and 52 and the power transmitter 13.
  • the high frequency power supplies 12 and 52 may be omitted, and the system power of the system power supply may be input to the power transmitter 13.

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)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

La présente invention porte sur un dispositif de transmission de puissance sans contact (10) qui comporte : une source de puissance à courant alternatif (CA) (12, 52) ; un résonateur côté primaire (13) ayant une bobine côté primaire (13a) et un condensateur côté primaire (13b) ; un résonateur côté secondaire (23) ayant une bobine côté secondaire (23a) et un condensateur côté secondaire (23b) et étant apte à recevoir une puissance CA provenant du résonateur côté primaire (13) de manière sans contact ; une unité de redressement (24) pour redresser une puissance CA reçue par le résonateur côté secondaire (23) ; une unité de stockage de puissance (22) sur laquelle une puissance à courant continu (CC) redressée par l'unité de redressement (24) est injectée ; et une unité de commande (26) pour commander de manière variable l'inductance de la bobine côté secondaire (23a) et/ou la capacité du condensateur côté secondaire (23b) pour assurer ainsi qu'une puissance CC ayant une valeur de puissance adaptée pour une charge est injectée sur l'unité de stockage (22).
PCT/JP2013/072354 2012-08-23 2013-08-22 Dispositif de transmission de puissance sans contact et appareil de réception de puissance Ceased WO2014030689A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012184396A JP2014042428A (ja) 2012-08-23 2012-08-23 非接触電力伝送装置
JP2012-184396 2012-08-23

Publications (1)

Publication Number Publication Date
WO2014030689A1 true WO2014030689A1 (fr) 2014-02-27

Family

ID=50149995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/072354 Ceased WO2014030689A1 (fr) 2012-08-23 2013-08-22 Dispositif de transmission de puissance sans contact et appareil de réception de puissance

Country Status (2)

Country Link
JP (1) JP2014042428A (fr)
WO (1) WO2014030689A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111342568A (zh) * 2020-03-30 2020-06-26 重庆理工大学 串并联谐振可转换式无线充电发射电路及控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11188113A (ja) * 1997-12-26 1999-07-13 Nec Corp 電力伝送システムおよび電力伝送方法ならびにその電力伝送システムを備えた電気刺激装置
JP2009106136A (ja) * 2007-10-25 2009-05-14 Toyota Motor Corp 電動車両および車両用給電装置
JP2011166994A (ja) * 2010-02-12 2011-08-25 Toyota Motor Corp 給電装置および車両給電システム
JP2011182506A (ja) * 2010-02-26 2011-09-15 Mitsuba Corp 電動モータおよびモータ装置
JP2013212043A (ja) * 2012-02-28 2013-10-10 Hitachi Maxell Ltd 非接触充電装置を備える小形電気機器、および非接触式の充電システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11188113A (ja) * 1997-12-26 1999-07-13 Nec Corp 電力伝送システムおよび電力伝送方法ならびにその電力伝送システムを備えた電気刺激装置
JP2009106136A (ja) * 2007-10-25 2009-05-14 Toyota Motor Corp 電動車両および車両用給電装置
JP2011166994A (ja) * 2010-02-12 2011-08-25 Toyota Motor Corp 給電装置および車両給電システム
JP2011182506A (ja) * 2010-02-26 2011-09-15 Mitsuba Corp 電動モータおよびモータ装置
JP2013212043A (ja) * 2012-02-28 2013-10-10 Hitachi Maxell Ltd 非接触充電装置を備える小形電気機器、および非接触式の充電システム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111342568A (zh) * 2020-03-30 2020-06-26 重庆理工大学 串并联谐振可转换式无线充电发射电路及控制方法
CN111342568B (zh) * 2020-03-30 2021-05-25 重庆理工大学 串并联谐振可转换式无线充电发射电路及控制方法

Also Published As

Publication number Publication date
JP2014042428A (ja) 2014-03-06

Similar Documents

Publication Publication Date Title
US10978246B2 (en) Wireless power transmitter and method of controlling power thereof
JP5880122B2 (ja) 非接触電力伝送装置
JP6089464B2 (ja) 非接触電力伝送装置
JP6089687B2 (ja) 受電機器及び非接触電力伝送装置
WO2014045874A1 (fr) Dispositif de réception de puissance et dispositif d'émission de puissance sans contact
JP2016063726A (ja) 受電機器及び非接触電力伝送装置
JP5962408B2 (ja) 受電機器及び非接触電力伝送装置
WO2014007352A1 (fr) Dispositif de transmission et dispositif de transmission d'énergie électrique sans contact
WO2014045873A1 (fr) Dispositif de réception de puissance et équipement d'émission de puissance sans contact
WO2014069148A1 (fr) Dispositif de transmission d'électricité sans contact, et appareil de réception d'électricité
WO2014003026A1 (fr) Dispositif de transmission d'énergie sans contact et appareil de réception d'énergie sans contact
JP5888201B2 (ja) 受電機器、及び非接触電力伝送装置
JP2015080296A (ja) 受電機器及び非接触電力伝送装置
WO2015083578A1 (fr) Dispositif de transmission d'énergie sans contact et appareil de réception d'électricité
WO2014054395A1 (fr) Dispositif d'émission de puissance, dispositif de réception de puissance et appareil de transfert de puissance sans contact
JP6015608B2 (ja) 受電機器及び非接触電力伝送装置
WO2014030689A1 (fr) Dispositif de transmission de puissance sans contact et appareil de réception de puissance
JP5991380B2 (ja) 非接触電力伝送装置
JP2015089187A (ja) 非接触電力伝送装置、送電機器及び受電機器
WO2015098747A1 (fr) Dispositif de transmission d'énergie et appareil de transmission d'énergie sans contact
WO2014069147A1 (fr) Appareil de transmission de puissance et dispositif de transmission de puissance sans contact
JP2014166093A (ja) 受電機器及び非接触電力伝送装置
JP2014193028A (ja) 受電機器及び非接触電力伝送装置
JP2016208602A (ja) 非接触電力伝送装置
JP2014090634A (ja) 非接触電力伝送装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13830971

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13830971

Country of ref document: EP

Kind code of ref document: A1