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EFFICIENT POWER TRANSMITTING TERMINAL, CONTACTLESS POWER TRANSMISSION DEVICE AND POWER TRANSMISSION METHOD

  • US 20170040844A1
  • Filed: 07/06/2016
  • Published: 02/09/2017
  • Est. Priority Date: 08/04/2015
  • Status: Active Grant
First Claim
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1. An efficient power transmitting terminal, transmitting energy to its isolated power receiving terminal, comprising:

  • a DC-AC voltage converter configured to receive a DC voltage to output a AC voltage with a preset frequency;

    a power transmitting portion, comprising a primary transmitter coil, wherein the primary transmitter coil receives the AC voltage to generate an alternating magnetic field, to transmit energy to the power receiving terminal; and

    a soft-switching control circuit, connected between the DC-AC voltage converter and the power transmitting portion, and configured to adjust an equivalent output impedance of the DC-AC voltage converter, so that the equivalent output impedance is inductive impedance;

    wherein the preset frequency is consistent with a system operating frequency at the power transmitting terminal and the power receiving terminal.

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