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Battery charging method and system using wireless power transmission

  • US 9,293,943 B2
  • Filed: 07/30/2013
  • Issued: 03/22/2016
  • Est. Priority Date: 12/03/2012
  • Status: Active Grant
First Claim
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1. A battery charging method using wireless power transmission, the method comprising:

  • receiving a first message associated with a battery charge start from a reception apparatus;

    discovering an optimal frequency band for a transmit power signal to be transmitted to the reception apparatus based on the first message;

    receiving, from the reception apparatus, a second message that comprises an extra power value and a charge power value, and is associated with a charge state of the reception apparatus; and

    adaptively controlling transmit power so that the extra power value is maintained to be constant in proportion to a relationship between the charge power value and a first parameter, based on the second message.

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