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wireless power receiving circuit

A technology for receiving circuits and wireless energy, applied in the direction of circuit devices, electrical components, etc.

Active Publication Date: 2020-03-10
NINGBO WEIE ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, if figure 2 As shown, due to the existence of the parasitic capacitance C1-Cn, the jump voltage on the coil is easy to form a common mode current Icm to the ground through the parasitic capacitance, I cm =Cp dV / dt, causing conducted electromagnetic interference (EMI)

Method used

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Embodiment Construction

[0033] Several preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, but the present disclosure is not limited to these embodiments. The present disclosure covers any alternatives, modifications, equivalent methods and schemes made within the spirit and scope of the present disclosure. In order to provide the public with a thorough understanding of the present disclosure, specific details are set forth in the following preferred embodiments of the present disclosure, and those skilled in the art can fully understand the present disclosure without the description of these details.

[0034] The term "comprising" used in the description of the present invention should not be construed as limiting the means listed thereafter. It does not exclude other elements or steps. Therefore, the scope of the expression "a device including means A and B" should not be limited to a device including parts A and B only. I...

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PUM

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Abstract

The invention discloses a wireless power receiving circuit. According to the circuit, by improving a traditional half-bridge rectifier circuit, the produced range of the voltages of the first and second ends of the output port of a resonant circuit are almost the same when the current direction is switched, and the current with the opposite direction jumps to change, so that the toward-ground common-mode currents with the directions of flowing form the coil to the ground and flowing from the ground to the coil are basically the same to suppress the total common-mode current.

Description

technical field [0001] The present invention relates to power electronics technology, in particular to wireless charging technology, and more specifically, to a wireless energy receiving circuit. Background technique [0002] Wireless power supply technology can transmit power between electronic devices in a wireless manner, so it is widely used in consumer electronic products and other types of electronic products. The wireless power supply technology usually realizes the wireless transmission of electric energy through the mutual electromagnetic coupling of the coil on the transmitting side and the coil on the receiving side. Among them, the magnetic resonance type wireless power supply method can efficiently provide electric energy to receiving ends separated by a certain distance in a wireless manner. In this method, both the power transmitting end and the power receiving end are equipped with a resonant circuit consisting of a coil and a capacitor, which allows electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 李跃超冯维一余峰
Owner NINGBO WEIE ELECTRONICS TECH CO LTD