A wireless power transfer apparatus may include a charging controller configured of generating a current instruction and a voltage instruction for wireless power transfer, a first circuit portion connected to the charging controller and an external power source and configured of converting an electric power supplied from the external power source to corresponding voltage value and corresponding current value according to the voltage instruction and the current instruction, and a primary coil connected to the first circuit portion and configured of generating an induced current in a secondary coil of an electric vehicle to deliver the electric power converted by the first circuit portion to the electric vehicle, wherein the charging controller estimates temperature of the secondary coil by use of the current value applied to the primary coil, and changes the current instruction for determining a current value applied to the primary coil, according to the estimated temperature of the secondary coil.
WIRELESS POWER TRANSFER APPARATUS, WIRELESS POWER TRANSFER SYSTEM OF VEHICLE, AND CONTROL METHOD THEREOF
2021-10-21
Patent
Electronic Resource
English
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