Method and device for improving wireless charging efficiency and electronic equipment

A technology for wireless charging and electronic equipment, applied in the field of image processing, can solve problems such as the mismatch of the working frequency of the resonant frequency transmitter module, the reduction of the wireless charging efficiency, the inactive charging efficiency of the resonant capacitor, etc., so as to reduce the charging time and improve the wireless charging. The effect of efficiency

Pending Publication Date: 2020-10-09
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology

[0003] However, since the transmitting module will adjust the actual operating frequency (for example, 110kHz~148kHz) according to its output voltage, this will cause the resonant capacitor of the receiving module to not work at the best charging efficiency
In addition, if the transmitting coil in the transmitting module is placed in a different position than the receiving coil in the receiving module, the inductance value of the receiving coil in the receiving module will change, causing the resonant frequency of the receiving module to not match the operating frequency of the transmitting module, further reducing the Wireless Charging Efficiency

Method used

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  • Method and device for improving wireless charging efficiency and electronic equipment
  • Method and device for improving wireless charging efficiency and electronic equipment
  • Method and device for improving wireless charging efficiency and electronic equipment

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[0060] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with aspects of the present disclosure as recited in the appended claims.

[0061] At present, in the wireless charging scheme of the Qi protocol (the wireless charging protocol stipulated by the WPC wireless charging alliance), the capacitance value of the resonant capacitor in the receiving module is stipulated to be a fixed value, namely 400nF or 500nF, when the resonant frequency is 100kHz. figure 1 It is a wireless charging circuit in the related art, see figure 1 , the c...

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Abstract

The invention relates to a method and device for improving wireless charging efficiency and electronic equipment. The method comprises the following steps: determining a target capacitance value of aresonant capacitor in a receiving module of electronic equipment, wherein the wireless charging efficiency corresponding to the target capacitance value is superior to the current wireless charging efficiency; and controlling the current capacitance value of the resonant capacitor to be adjusted to the target capacitance value. According to the embodiment, the resonant frequency of the receiving module can be closer to the actual working frequency of the transmitting module by adjusting the capacitance value of the resonant capacitor to the target capacitance value, the wireless charging efficiency can be improved, and the charging time of electronic equipment is shortened.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular, to a method and device for improving wireless charging efficiency, and electronic equipment. Background technique [0002] At present, in the wireless charging scheme of the Qi protocol (the wireless charging protocol stipulated by the WPC wireless charging alliance), the capacitance value of the resonant capacitor in the receiving module is stipulated to be a fixed value, namely 400nF or 500nF, when the resonant frequency is 100kHz. [0003] However, since the transmitting module will adjust the actual operating frequency (for example, 110kHz-148kHz) according to its output voltage, this will cause the resonant capacitor of the receiving module to not work at the best charging efficiency. In addition, if the transmitting coil in the transmitting module is placed in a different position than the receiving coil in the receiving module, the inductance value of t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 马强
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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