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Power transmitter and wireless power transmission system

  • US 9,001,922 B2
  • Filed: 09/08/2011
  • Issued: 04/07/2015
  • Est. Priority Date: 09/10/2010
  • Status: Active Grant
First Claim
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1. A power transmitter usable in a wireless power transmission system for transmitting power from the power transmitter to a power receiver wirelessly, the power transmitter comprising:

  • a power transmitting section for transmitting power;

    a communication section for communicating information, for controlling the transmission of the power, with the power receiver; and

    a control section for controlling the power transmitting section such that the power to be sent out is higher while the communication section is performing the communication than while the communication section is not performing the communication, wherein;

    the power transmitting section transmits the power to be transmitted after converting the power into a pulse train; and

    the control section controls the power transmitting section such that at least one of a pulse width and a pulse amplitude of the pulse train is larger while the communication section is performing the communication than while the communication section is not performing the communication.

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