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Wireless power transmission circuit, wireless power transmitter and wireless power receiver

A wireless power transmission, wireless power technology, applied in circuit devices, electrical components, etc.

Active Publication Date: 2020-02-07
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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  • Wireless power transmission circuit, wireless power transmitter and wireless power receiver
  • Wireless power transmission circuit, wireless power transmitter and wireless power receiver
  • Wireless power transmission circuit, wireless power transmitter and wireless power receiver

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Embodiment Construction

[0026] 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.

[0027] The term "comprising", used in the claims, should not be interpreted as limiting to 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. It means that for this d...

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PUM

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Abstract

The invention discloses a wireless electric energy transmission circuit, a wireless electric energy emission end and a wireless electric energy receiving end. Two capacitors are arranged in a resonant circuit and are respectively arranged at two ends of a coil in a series mode, so that a part of a common-mode current to ground flows to the ground from the coil, meanwhile, the other part the common-mode current to the ground flows to the coil from the ground, mutual offset is achieved, and the total common-mode current to the ground is suppressed.

Description

technical field [0001] The present invention relates to power electronics technology, in particular to wireless charging technology, and more specifically, to a wireless power transmission circuit, a wireless power transmitter and a wireless power receiver. 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 circ...

Claims

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Application Information

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