Noncontact power transmission device and power transmission method

A non-contact technology for power transmission, applied to electrical components, etc., can solve problems such as increased magnetic field energy, enhanced coupling, and damaged DC-DC converters

Active Publication Date: 2015-11-25
NINGBO WEIE ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, during the power transmission process, the coupling between the transmitting coil and the receiving coil will change, such as a sudden increase in the coupling or a sudden increase in the magnetic field energy in the transmitti

Method used

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  • Noncontact power transmission device and power transmission method
  • Noncontact power transmission device and power transmission method
  • Noncontact power transmission device and power transmission method

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Embodiment Construction

[0047] Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0048] refer to figure 2 Shown is a circuit block diagram of the first embodiment of the non-contact power transmission device according to the present invention, as figure 2 As shown, the non-contact power transmission device includes an isolated transmitting part and a receiving part, and the transmitting part includes an inverter (n...

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Abstract

The invention discloses a noncontact power transmission device and a power transmission method. A rectifier and filter circuit is used for receiving high-frequency alternating current which is output by a receiving coil; a direct current voltage signal is obtained after full-bridge rectifying and filtering processing; when the condition that the direct current voltage after rectifying and filtering exceeds a preset value is detected, a current loop is formed by a switch protection circuit, an impedance matching circuit and the receiving coil, so that the energy of the receiving coil is transferred until the direct current voltage descends to a value which does not exceed the preset voltage value; the switch protection circuit is connected between an impedance matching network and the ground; when the power transmission device normally works, the switch protection switch does not work; and when the overvoltage condition is generated, the switch protection circuit carries out a switch motion to reduce the value of the direct current voltage.

Description

technical field [0001] The invention relates to the field of wireless charging, and more specifically, to a non-contact power transmission device and a power transmission method. Background technique [0002] Non-contact power transmission technology (also called wireless power transmission technology) is widely used in the field of electronic charging due to its advantages of safety and convenience. There are mainly two ways to realize wireless power transmission: magnetic induction and magnetic resonance. Magnetic resonance is commonly used The magnetic resonance wireless power transmission device mainly includes a transmitting part and a receiving part, both of which realize energy transmission through the principle of electromagnetic resonance. [0003] Generally speaking, the transmitting part includes an inverter, an impedance matching circuit and a transmitting coil, and the receiving part includes a receiving coil, an impedance matching circuit, a rectification circu...

Claims

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Application Information

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IPC IPC(8): H02J5/00
Inventor 苏恒溢
Owner NINGBO WEIE ELECTRONICS TECH CO LTD
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