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Wireless charging magnetic positioning structure, wireless charging module and wireless charger

A wireless charging and magnetic positioning technology, which is applied in current collectors, battery circuit devices, electric vehicles, etc., can solve single problems, achieve the effects of increasing magnetic field strength, achieving precise positioning, and improving charging efficiency

Pending Publication Date: 2021-05-14
SUNWAY COMM JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Magnetic positioning technology is the most convenient and effective positioning technology at present, and it has gradually been applied in wireless charging technology. The wireless charging method of the magnetic positioning structure relatively improves the charging efficiency, but if it is to be popularized and applied in a large area, the charging efficiency of the wireless charging technology still needs to be further improved

Method used

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  • Wireless charging magnetic positioning structure, wireless charging module and wireless charger
  • Wireless charging magnetic positioning structure, wireless charging module and wireless charger
  • Wireless charging magnetic positioning structure, wireless charging module and wireless charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Such as figure 1 As shown, a wireless charging magnetic positioning structure includes a first magnet 1 and a magnetically conductive sheet 3;

[0074] The magnetically conductive sheet 3 is attached to one side of the first magnet 1;

[0075] Preferably, the first magnet 1 has a through hole 4 for leading out the coil leads, thereby reducing the thickness of the wireless charging module;

[0076] Wherein the shape of the first magnet 1 can be set according to actual needs, such as the first magnet 1 can be a ring structure, such as a square ring, a rectangular ring or a ring, etc.;

[0077] In an optional embodiment, the first magnet 1 includes more than two second magnets 2, and the two or more second magnets 2 are spliced ​​into different rings around the wireless charging coil, such as square rings, rectangular Ring or ring, etc.;

[0078] The magnetization directions of the second magnets 2 are the same;

[0079] Wherein the second magnet 2 can adopt magnetic m...

Embodiment 2

[0083] On the basis of Embodiment 1, the magnetic conductive sheet 3 is further defined:

[0084] The material of the magnetic conductive sheet 3 includes silicon steel sheet, low carbon steel, stainless steel, ferrite or metal powder core material;

[0085] The shape of the magnetic conductive sheet 3 is adapted to the shape of the first magnet 1;

[0086] This setting can not only reduce the magnetic flux leakage of the first magnet, but also avoid excessive impact on the volume of the wireless charging module;

[0087] In another optional embodiment, the shape of the magnetically conductive sheet 3 can be set according to actual needs, such as a ring shape such as Figure 4 and Figure 5 As shown, it can also be a square or a rhombus, etc.;

[0088] Wherein the area of ​​the magnetic conductive sheet 3 can be set larger, for example, larger than the area of ​​the first magnet 1, the greater the magnetic field strength of the magnetic positioning structure, the higher the...

Embodiment 3

[0093] Such as figure 2 and image 3 As shown, a wireless charging module includes the wireless charging magnetic positioning structure described in Embodiment 1 or Embodiment 2;

[0094] It also includes a wireless charging coil 5 and a magnetic isolation sheet 6;

[0095] The wireless charging coil 5 is bonded to one side of the magnetic isolation sheet 6 through an adhesive layer 8;

[0096] Wherein, the wireless charging coil 5 is a coil made of copper material, and its size is determined by product design requirements;

[0097] In an optional embodiment, the wireless charging coil 5 is used to release electric energy and convert it into magnetic energy, and the material of the corresponding magnetic isolation sheet 6 includes soft magnetic ferrite, amorphous, nanocrystalline, Permalloy or silicon steel soft magnetic material;

[0098] In another optional embodiment, the wireless charging coil 5 is used to receive magnetic energy and convert it into electrical energy,...

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Abstract

The invention provides a wireless charging magnetic positioning structure, a wireless charging module and a wireless charger. The wireless charging magnetic positioning structure comprises a first magnet and a magnetic conductive sheet; and the magnetic conductive sheet is attached to one side of the first magnet. By introducing the magnetic conductive sheet into the magnetic positioning structure and attaching the magnetic conductive sheet to the positioning magnet, magnetic lines can be focused, the magnetic path length of the magnetic lines generated by the positioning magnet can be shortened, the magnetic leakage of the positioning magnet can be reduced, and the magnetic field intensity of the magnetic positioning structure can be increased, so that accurate positioning of wireless charging coils at a transmitting end and a receiving end can be further realized, the coil coupling coefficient is effectively improved, and the charging efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of wireless charging magnetic positioning, in particular to a wireless charging magnetic positioning structure, a wireless charging module and a wireless charger. Background technique [0002] Wireless charging technology is a non-contact charging technology that uses coil coupling technology to transmit energy from the transmitter to the receiver through inductive coupling. Due to its advantages of convenience, intelligence and diversification, the popularity of wireless charging products is getting higher and higher, and it has become a part of people's lives more and more. [0003] With the rapid development of consumer electronic products, higher requirements are put forward for wireless charging technology. Among them is the wireless charging efficiency issue. Charging efficiency is one of the important indicators for evaluating the performance of wireless charging products. The higher the charging e...

Claims

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Application Information

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IPC IPC(8): H02J50/10H02J50/90H02J50/70H02J7/00
CPCH02J7/0013H02J50/10H02J50/70H02J50/90
Inventor 周苗苗许英华王磊姜桂君张继林马国庆
Owner SUNWAY COMM JIANGSU CO LTD
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