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Electronic card with a charging mechanism

  • US 9,627,916 B2
  • Filed: 06/13/2013
  • Issued: 04/18/2017
  • Est. Priority Date: 08/31/2012
  • Status: Active Grant
First Claim
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1. An electronic card, comprising:

  • an antenna, receiving an external electric signal;

    a chip, coupled to the antenna, receiving the external electric signal via the antenna and providing a demodulated electric signal to a charging circuit;

    the charging circuit, coupled to the chip, receiving the demodulated electric signal and converting the demodulated electric signal to generate a charging power; and

    a battery, coupled to the charging circuit,wherein, the charging circuit provides the charging power to the battery for charging the battery according to a residual electricity of the batterywherein the charging circuit comprises;

    a power converter, coupled to the chip and configured to receive and convert the demodulated electric signal to generate the charging power; and

    an electricity detector, coupled to the battery and configured to detect the residual electricity in the battery,wherein the electricity detector generates a disabled charging enable signal such that the power converter stops generating the charging power when the residual electricity in the battery is greater than or equal to a predetermined electricity, wherein the disabled charging enable signal is generated in the same electronic card as the electronic card that the battery locates; and

    the electricity detector generates an enabled charging enable signal such that the power converter generates the charging power when the residual electricity in the battery is less than the predetermined electricity, wherein the power converter and the electricity detector locates in the same electronic card.

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