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1. (WO2017031711) PREVENTION OF MAGNETIC SATURATION AND IMPROVEMENT OF WIRELESS CHARGING EFFICIENCY

Pub. No.:    WO/2017/031711    International Application No.:    PCT/CN2015/088086
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Thu Aug 27 01:59:59 CEST 2015
IPC: H02J 7/20
Applicants: SUZHOU BRAVO TECHNOLOGY CO., LTD.
苏州宝润电子科技有限公司
Inventors: YU, Baohua
于保华
HU, Ying
胡颖
Title: PREVENTION OF MAGNETIC SATURATION AND IMPROVEMENT OF WIRELESS CHARGING EFFICIENCY
Abstract:
A method for preventing magnetic saturation and improving wireless charging efficiency comprises: determining that wireless charging is in a magnetic saturation state (W0); gradually reducing a value of a transmitter current according to a fixed value till a wireless charging system exits from the magnetic saturation state (W2); and when the wireless charging system has exit from the magnetic saturation state, setting a maximum value Imax of the transmitter current (W8), wherein the transmitter current in the same process of charging the same mobile terminal by a charging base cannot be greater than the maximum value Imax. In the present method, detection is performed in a wireless charging process and the magnetic saturation loss is avoided, thereby improving the wireless charging efficiency.