# US 12,002,937 B2 · Vehicle and non-contact power feeding apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,002,937 B2 - Document ID: US12002937B2 - Status: Granted - Kind: B2 - Application number: 15/833,413 - Filed: 2017-12-06 - Published: 2018-09-27 - Granted: 2024-06-04 - Earliest claimed: 2017-03-22 - Assignees: Subaru Corporation - Applicants: Subaru Corporation - Inventors: Isao Nakagawa - Web page: https://patentgrep.com/patent/US12002937B2 ## CPC - H01M 10/625: Vehicles - B60L 1/02: to electric heating circuits - B60L 53/00: 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 - B60L 53/12: Inductive energy transfer - B60L 58/27: by heating - H01M 10/443: {in response to temperature} - H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) - H01M 10/615: Heating or keeping warm - H01M 10/657: by electric or electromagnetic means - H02J 7/04: Regulation of charging current or voltage - H02J 7/50: acting upon multiple batteries simultaneously or sequentially - H02J 7/80: including monitoring or indicating arrangements - H02J 7/82: Control of state of charge [SOC] - H02J 7/977: {of the battery} - H02J 50/10: using inductive coupling - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 2240/662: Temperature - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H01M 10/486: {for measuring temperature} - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - Y02T 90/14: Plug-in electric vehicles - Y02T 90/16: Information or communication technologies improving the operation of electric vehicles - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A vehicle includes a secondary battery, a power receiver, a charger, a heat generator, and a battery temperature raising unit. The power receiver receives an electromagnetic wave to generate electric power. The charger charges the secondary battery by using the electric power generated by the power receiver. The heat generator receives the electromagnetic wave to generate heat. The battery temperature raising unit raises temperature of the secondary battery by using the heat generator as a heat source. A part of a heat generation band, which is a frequency band of the electromagnetic wave in which the heat generator has an increased heat generation efficiency, does not overlap a power generation band, which is a frequency band of the electromagnetic wave in which the power receiver has an increased power generation efficiency, and a part of the power generation band does not overlap the heat generation band. ## Claims ### Claim 1 A vehicle comprising a power receiver configured to generate electric power above a first threshold by using an electromagnetic wave, transmitted from a power transmitter enabled to shift a frequency of the electromagnetic wave, of a frequency within a power generation frequency band; a charger configured to charge a battery installed in the vehicle by an electric power generated by the power receiver; a heat generator configured to generate heat above a second threshold by using the electromagnetic wave, transmitted from the power transmitter, of a frequency within a heat generation frequency band; a battery pack configured to accommodate the battery with the heat generator, and arranged at a space of the vehicle such that a coil of the power receiver faces a coil of the power transmitter; and a controller configured to make the power transmitter shift a frequency of the electromagnetic wave in accordance with the temperature of the battery, wherein the controller is configured to change the frequency among frequencies including: a first frequency included in a first frequency band overlapping the power generation frequency band in which an amount of generated electric power is maintained at the first threshold or higher with the heat generation frequency band in which an amount of generated heat is maintained at the second threshold or higher a second frequency included in a second frequency band overlapping the power generation frequency band with a frequency band, in which an amount of heat generated by the heat generator is suppressed to be more than 0 and less than the second threshold, and a third frequency included in a third frequency band overlapping the heat generation frequency band with a frequency band, in which an amount of electric power generated by the power receiver is suppressed to be more than 0 and less than the first threshold. ### Claim 2 (depends on 1) The vehicle according to claim 1, wherein the heat generator is obtained by forming an aluminum film on a polyethylene terephthalate film. ### Claim 3 (depends on 1) The vehicle according to claim 1, wherein a battery temperature raising unit includes a plurality of the heat generators having different heat generation frequency bands, each of the heat generators serving as the heat source. ### Claim 4 (depends on 1) The vehicle according to claim 1, wherein a battery temperature raising unit includes a plurality of the heat generators having different heat generation frequency bands, each of the heat generators serving as the heat source. ### Claim 5 (depends on 2) The vehicle according to claim 2, wherein a battery temperature raising unit includes a plurality of the heat generators having different heat generation frequency bands, each of the heat generators serving as the heat source. ### Claim 6 A non-contact power feeding apparatus configured to perform non-contact power feeding to a vehicle, the apparatus comprising: a power transmitter configured to transmit an electromagnetic wave to the vehicle; and a controller configured to shift a frequency of the electromagnetic wave in accordance with temperature information of a battery in a battery pack installed in the vehicle, the temperature information received from the vehicle, the battery pack configured to accommodate the battery with a heat generator configured to generate heat above a second threshold by using the electromagnetic wave transmitted from the power transmitter, of a frequency within a heat generation frequency band, the battery pack arranged at a space of the vehicle such that a coil of a power receiver faces a coil of the power transmitter, the power receiver configured to generate electric power above a first threshold by using the electromagnetic wave transmitted from the power transmitter enabled to shift a frequency of the electromagnetic wave, of a frequency within a power generation frequency band, wherein the controller is configured to change the frequency from among frequencies including: a first frequency included in a first frequency band overlapping the power generation band in which an amount of generated electric power is maintained at the first threshold or higher with the heat generation frequency band in which an amount of generated heat is maintained at the second threshold or higher a second frequency included in a second frequency band overlapping the power generation frequency band with a frequency band, in which an amount of heat generated by the heat generator is suppressed to be more than 0 and less than the second threshold, and a third frequency included in a third frequency band overlapping the heat generation frequency band with a frequency band, in which an amount of electric power generated by the power receiver is suppressed to be more than 0 and less than the first threshold. ### Claim 7 (depends on 6) The non-contact power feeding apparatus according to claim 6, wherein the controller sets the frequency in accordance with the temperature information and state-of-charge information of the battery obtained from the vehicle, the battery being installed in the vehicle and configured to be charged by using the electromagnetic wave. ### Claim 8 (depends on 7) The non-contact power feeding apparatus according to claim 7, wherein after charging of the battery is completed, the controller causes the power transmitter to transmit the electromagnetic wave having a frequency allowing a heat generator to generate heat in accordance with the temperature information, the heat generator being configured to receive the electromagnetic wave to generate heat and being used as a heat source by a battery temperature raising unit included in the vehicle to raise temperature of the battery. ### Claim 9 (depends on 1) The vehicle according to claim 1, wherein the controller switches the frequency of the electromagnetic wave transmitted by the power transmitter in accordance with temperature information of the battery heated by the heat generator where there is the part of the power generation band and heat generation band that does not overlap and the other part the power generation band and heat generation band that does overlap, and wherein the controller instructs the power transmitter to switch the frequency of the transmitted electromagnetic wave from among the frequencies including the first and second frequency to switch between charging and heating the battery. ### Claim 10 (depends on 1) The vehicle according to claim 1, wherein charging and temperature raising of the battery is selectively performed by the controller switching the frequency of the electromagnetic wave in accordance with temperature information from the battery. ### Claim 11 (depends on 6) The apparatus according to claim 6, wherein charging and temperature raising of the battery is selectively performed by the controller changing the frequency of the electromagnetic wave in accordance with temperature information from the battery. ### Claim 12 (depends on 1) The vehicle according to claim 1, wherein the controller is configured to cause the power transmitter to start transmitting an electromagnetic wave having the first frequency, when the temperature of the battery is lower than or equal to a first value. ### Claim 13 (depends on 12) The vehicle according to claim 12, wherein the controller is configured to switch the frequency from the first frequency to the second frequency, when the temperature of the battery is higher than the first value. ### Claim 14 (depends on 13) The vehicle according to claim 13, wherein the controller is configured to switch the frequency from the second frequency to a third frequency in the heat generation frequency band except the overlapping frequency band, when completion of charging of the battery is detected and the temperature of the battery is lower than or equal to the first value. ### Claim 15 (depends on 1) The vehicle according to claim 1, wherein the controller is configured to cause the power transmitter to start transmitting an electromagnetic wave having the second frequency, when the temperature of the battery is higher than a first value. ### Claim 16 (depends on 15) The vehicle according to claim 15, wherein the controller is configured to switch the frequency from the second frequency to the first frequency, when the temperature of the battery is lower than the first value. ### Claim 17 (depends on 16) The vehicle according to claim 16, wherein the controller is configured to switch the frequency from the first frequency to a third frequency in the heat generation frequency band except the overlapping frequency band, when completion of charging of the battery is detected and the temperature of the battery is lower than or equal to the first value. ### Claim 18 (depends on 1) The vehicle according to claim 1, wherein the heat generator is a sheet-like shape and attached to at least one side of the battery pack. ### Claim 19 (depends on 1) The vehicle according to claim 1, wherein the thickness of the heat generator in the battery pack is configured to be partially increasing to increase efficiency of raising temperature of the battery.