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Multi-coil wireless charging system having metal object detecting function

A metal object, wireless charging technology, applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve problems such as safety hazards, metal heating, etc., to achieve strong adaptability, reduce the requirements of position accuracy, and strong versatility

Inactive Publication Date: 2016-12-14
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the traditional wireless charging system, when metal is mixed into the magnetic field coupling area, the metal will heat up sharply due to the eddy current effect, and there is a huge potential safety hazard

Method used

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  • Multi-coil wireless charging system having metal object detecting function
  • Multi-coil wireless charging system having metal object detecting function
  • Multi-coil wireless charging system having metal object detecting function

Examples

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Examples of the described embodiments are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. They are examples only and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the pur...

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Abstract

The invention relates to the technical field of wireless charging, in particular to a multi-coil wireless charging system having a metal object detecting function. The multi-coil wireless charging system comprises a power emission unit, a power receiving unit and a metal detecting device, wherein the power emission unit is used for electric energy emission and high-frequency resonant magnetic field production of the charging system, the power receiving unit is used for receiving energy emitted by the power emission unit and rectifying the energy into constant direct current for power supply of a battery, the metal detecting device comprises a metal detecting coil and a metal detecting circuit, the metal detecting coil is mutually coupled with an emitting coil and a receiving coil, and the metal detecting coil and the metal detecting circuit for a loop for detecting whether metal foreign matter exists in a magnetic field or not. The emitting coil is of a multi-coil array structure, the multi-coil wireless charging system is suitable for different electronic devices, has strong universality and is high in charging efficiency. The emitting coil serves as an energy emitting unit of the whole charging system and also establishes the high-frequency magnetic field for the metal detecting device, and the wireless charging system and a balancing metal foreign matter detecting technology are perfectly fused.

Description

technical field [0001] The invention belongs to the technical field of wireless charging, in particular to a multi-coil wireless charging system with a metal object detection function. Background technique [0002] A wireless power supply (wireless energy transfer) device is a special device that can charge electronic devices and other devices over a long distance without relying on wires. Since charging does not require a physical connection, the wireless power supply device can be arranged in various places, effectively ensuring the timeliness of charging, and greatly enhancing its practicability and convenience. As a result, wireless power supply technology will become possible to charge anytime, anywhere. [0003] Existing wireless energy transfer technologies include at least the following five directions: electromagnetic induction, electromagnetic resonance, microwave, ultrasonic and laser. [0004] Wireless charging can effectively avoid the risk of sparks and elect...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02J50/40H02J50/60H02J50/80H02J7/00
CPCH02J7/025Y02B40/00
Inventor 蔡昌松王军华张智方支剑胡妹林
Owner WUHAN UNIV
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