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Self-resonant wireless power supply device

A wireless power supply, self-resonant technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems that the wireless power transmission system cannot achieve frequency tracking, hard-switching circuit electromagnetic interference, unstable working status, etc., to achieve equipment safety Reliable, reduced manufacturing difficulty, no mechanical wear effect

Active Publication Date: 2020-06-05
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a self-resonant wireless power supply device, which solves the problem that the wireless power transmission system in the prior art cannot achieve frequency tracking, the electromagnetic interference of the hard switching circuit is serious, the switching loss is large, and the working state is not good when multiple MOS tubes are connected in parallel. stability problem

Method used

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] Self-resonant wireless power supply devices, such as figure 1 As shown, it consists of a self-resonant circuit 101, a coupler 102 and a rectifier / filter 103,

[0038] The self-resonant circuit 101 is used to change the direct current into an alternating current, and transmit the alternating current to the coupler 102;

[0039] The coupler 102 is used to couple and transmit the AC current to the other end of the non-contact, and transmit it to the rectifier / filter 103;...

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Abstract

The invention discloses a self-resonant wireless power supply device consisting of a self-resonant circuit, a coupler and a rectifier / filter. According to the self-resonance circuit, the advantage offrequency tracking of the self-resonant circuit is retained, and facing the demand of low-voltage load of the circuit, a MOS tube driver is used for optimizing the parallel connection of the pluralityof sets of MOS tubes, thereby solving the problem of switching logic confusion in the parallel connection of the plurality of sets of MOS tubes in traditional self-resonant circuits. A switch tube isdriven by adopting the MOS tube driver, so that the opening and closing are clear, and the reliability is higher.

Description

technical field [0001] The invention belongs to the field of electronic circuits and the field of power electronics technology, in particular to a self-resonant wireless power supply device. Background technique [0002] Due to its characteristics of electrical isolation, no electric spark, and separability, wireless power transmission is more and more used in aviation, aerospace, navigation, satellite and other fields. [0003] In the current common wireless power transmission system topology, hard-switching circuits such as full-bridge inverter circuits are often used as inverters. However, due to their working principles, hard-switching inverters have large switching losses, current spikes in inductive shutdown, and Capacitive turn-on has problems such as current spikes and serious electromagnetic interference. These existing problems have seriously affected the transmission efficiency of the wireless power transmission system. In some environments with high electromagne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 刘彦明李小平韩滔郭世忠韩高
Owner XIDIAN UNIV
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