Invention Grant
US08084991B2 Power reception device, electronic apparatus, and non-contact power transmission system
有权
电力接收装置,电子设备和非接触式电力传输系统
- Patent Title: Power reception device, electronic apparatus, and non-contact power transmission system
- Patent Title (中): 电力接收装置,电子设备和非接触式电力传输系统
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Application No.: US12434097Application Date: 2009-05-01
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Publication No.: US08084991B2Publication Date: 2011-12-27
- Inventor: Kentaro Yoda , Hirofumi Okada , Takahiro Kamijo
- Applicant: Kentaro Yoda , Hirofumi Okada , Takahiro Kamijo
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2008-123549 20080509
- Main IPC: H01M6/50
- IPC: H01M6/50

Abstract:
A power reception device includes a first resistance element having one end electrically connected to one end of a secondary coil which is able to be electromagnetically coupled to a primary coil of a power transmission devices a second resistance element having one end electrically connected to the other end of the first resistance element and having the other end supplied with a reference voltage, a power reception control device that obtains a frequency of an alternating current (AC) voltage induced on the secondary coil based on a voltage division signal output from the other end of the first resistance element and varies a magnitude of a load of the power reception device in accordance with the frequency, and a variable resistance element that has resistance varied in accordance with temperature and is connected to the first resistance element or the second resistance element in parallel.
Public/Granted literature
- US20090278666A1 POWER RECEPTION DEVICE, ELECTRONIC APPARATUS, AND NON-CONTACT POWER TRANSMISSION SYSTEM Public/Granted day:2009-11-12
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