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

A technology of wireless charger and wireless charging, which is applied in current collectors, battery circuit devices, electric vehicles, etc., and can solve single problems

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

[0074] Such as figure 1 As shown, a wireless charging magnetic positioning structure includes a first magnet 1 and a second magnet 2;

[0075] The first magnet 1 is arranged around the wireless charging coil;

[0076] The second magnet 2 is arranged around the first magnet 1;

[0077] The magnetization direction of the first magnet 1 is opposite to the magnetization direction of the second magnet 2;

[0078] Specifically, the magnetization direction can be selected from axial magnetization or radial magnetization. If the magnetization direction of the first magnet 1 is axial magnetization from top to bottom, then the magnetization direction of the second magnet 2 is from bottom to bottom. Axial magnetization in the upward direction, and vice versa; if the magnetization direction of the first magnet 1 is radial magnetization from the center of the circle to the outside of the circle, then the magnetization direction of the second magnet 2 is the radial direction from the outs...

Embodiment 2

[0085] On the basis of Embodiment 1, the first magnet 1 and the second magnet 2 are further limited respectively:

[0086] The first magnet 1 includes more than two third magnets 3;

[0087] Wherein the two or more third magnets 3 are spliced ​​into different shapes around the wireless charging coil, such as ring, square, or other symmetrical or asymmetrical heterosexual shapes;

[0088] The magnetization direction of the third magnet 3 is the same;

[0089] Wherein the third magnet 3 can adopt magnetic materials of different shapes and sizes as required, and the magnetic materials include NdFeB permanent magnets, samarium cobalt or permanent ferrite materials, etc.;

[0090] Preferably, the adjacent third magnets 3 are tightly connected;

[0091] In another optional embodiment, there is a gap between adjacent third magnets 3, wherein the size of the gap is adjusted according to the actual situation, because a tightly closed magnetic circuit can be formed between the first m...

Embodiment 3

[0099] Such as figure 2 As shown, a wireless charging module includes the wireless charging magnetic positioning structure described in Embodiment 1 or Embodiment 2;

[0100] It also includes a wireless charging coil 8 and a magnetic isolation sheet 9;

[0101] The wireless charging coil 8 is attached to one side of the magnetic isolation sheet 9;

[0102] Wherein, the wireless charging coil 8 is a coil made of copper material, and its size is determined by product design requirements;

[0103] In an optional embodiment, the wireless charging coil 8 is used to release electric energy and convert it into magnetic energy, and the material of the corresponding magnetic isolation sheet 9 includes soft magnetic ferrite, amorphous, nanocrystalline, Permalloy or silicon steel soft magnetic material;

[0104] In another optional embodiment, the wireless charging coil 8 is used to receive magnetic energy and convert it into electrical energy, and the material of the correspondingly...

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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 second magnet; the first magnet is arranged around the wireless charging coil; the second magnet is arranged around the first magnet; and the magnetizing direction of the first magnet is opposite to that of the second magnet. Therefore, the first magnet and the second magnet in the transmitting end and the receiving end can be matched with each other to form a tight closed loop magnetic line, the length of the magnetic line of the magnetic positioning structure can be shortened, the magnetic line is more dense, magnetic leakage is reduced, the magnetic attraction force of the magnetic positioning structure is improved, and the influence of the magnetic line of force of the magnetic positioning structure on other components in the receiving end and the transmitting end is reduced, so that accurate positioning between the wireless charging coils can be realized, 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. This includes the issue of wireless charging efficiency. Charging efficiency is one of the important indicators for evaluating the performance of wireless charging products. The higher the chargin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/10H02J50/90H02J50/70H02J7/00
CPCH02J7/0013H02J50/10H02J50/70H02J50/90
Inventor 许英华周苗苗王磊董泽琳马国庆蔡鹏
Owner SUNWAY COMM JIANGSU CO LTD
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