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1. (WO2013121723) WIRELESS CHARGING DEVICE AND METHOD FOR CONTROLLING WIRELESS CHARGING

Pub. No.:    WO/2013/121723    International Application No.:    PCT/JP2013/000533
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Fri Feb 01 00:59:59 CET 2013
IPC: H02J 5/00
B60R 25/40
H02J 7/02
H02J 17/00
Applicants: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
TOYOTA JIDOSHA KABUSHIKI KAISHA
OKADA, Hiroki
MURAKAMI, Hiroko
Inventors: OKADA, Hiroki
MURAKAMI, Hiroko
WATANABE, Naoki
HANAKI, Hidenobu
Title: WIRELESS CHARGING DEVICE AND METHOD FOR CONTROLLING WIRELESS CHARGING
Abstract:
A wireless charging device (40) arranged in a vehicle including an in-vehicle device (20). The in-vehicle device transmits a wake signal in intervals until receiving a response from an electronic key (10) and communicates with the electronic key when receiving the response to determine whether the electronic key is authentic. The wireless charging device includes a primary coil (L1) that transmits power to a charged device (50) when supplied with alternating current. A detection unit (43) uses the wake signal to detect when communication starts between the in-vehicle device and the electronic key. A power supplying suppression unit (43) reduces the alternating current supplied to the primary coil over a certain time from when the communication starts. The power supplying suppression time includes the time required for a series of communication to be performed between the in-vehicle device and the electronic key for the verification.