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Recharging system and electronic device

  • US 8,237,401 B2
  • Filed: 04/03/2009
  • Issued: 08/07/2012
  • Est. Priority Date: 12/29/2008
  • Status: Expired due to Fees
First Claim
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1. An electronic device capable of using a rechargeable battery, comprising:

  • a casing;

    a battery housing received in the casing for receiving the rechargeable battery, the battery housing comprising two electrical contacts for electrically connecting two electrodes of the rechargeable battery; and

    a receiver fixed to a surface of the casing of the electronic device, the receiver comprising a receiving coil, the two ends of the receiving coil being connected to the two electrical contacts of the battery housing respectively, the receiving coil being a planar spiral coil substantially parallel to the surface of the casing of the electronic device, the receiving coil configured for inductively coupling to a magnetic field produced by a power supply, and the receiver further comprising a plurality of electromagnets surrounding the receiving coil, the plurality of electromagnets being connected to the rechargeable battery, wherein a switch is disposed between the plurality of electromagnets and the rechargeable battery and is turned on when the battery is recharged.

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