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Coil, wireless charging receiving device, wireless charging transmitting device and wireless charging system

A technology for wireless charging and receiving devices, applied in circuit devices, battery circuit devices, transformer/inductor coils/windings/connections, etc., can solve the problems of large eddy current loss, etc., to reduce specific gravity, reduce eddy current loss, reduce Effect of Coil Loss

Active Publication Date: 2018-07-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like Figure 1b As shown, in the prior art, especially when the wireless charger and the mobile phone are not facing each other, the magnetic field in the wireless charging process will generate eddy current losses on the wireless charging coil in the wireless charger and the wireless charging receiving coil in the mobile phone Very big

Method used

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  • Coil, wireless charging receiving device, wireless charging transmitting device and wireless charging system
  • Coil, wireless charging receiving device, wireless charging transmitting device and wireless charging system
  • Coil, wireless charging receiving device, wireless charging transmitting device and wireless charging system

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0057] It should be understood that the embodiments of the present invention can be applied to various charging scenarios, and mobile terminals are not limited to smart phones, tablet computers, and wearable devices, nor are they limited to various mobile terminal devices such as electric vehicles. limited.

[0058] Such as figure 2 As shown, in some embodiments of the present invention, there is a wireless charging receiving device for a mobile terminal, and the wireless charging receiving device for a mobile terminal is set inside a mobile terminal device, such as inside a mobile phone. The mobile terminal wireless charging receiving device is used to receive the energy transmitted by the wireless charging transmitting device, and the wireless charging transmitting device ...

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Abstract

The invention provides a coil including an output terminal, an input terminal and a winding part connected between the output terminal and the input terminal. The coil is characterized in that at least a part of the winding part is provided with a slot hole, and the depth of a cross section of the winding part where the slot hole is located in any direction is smaller than or equal to a distance between two points with a largest distance on the cross section of the winding part, wherein the winding part is a metal conductor formed by spiral winding, and the input terminal and the output terminal are used for connecting the winding part to an external circuit.

Description

technical field [0001] Embodiments of the present invention relate to the field of wireless charging, and more specifically, relate to a coil, a wireless charging device and a system. Background technique [0002] With the widespread use of mobile terminals, the demand for wireless charging is getting stronger and stronger. In the future, when all mobile terminals around us, including smart phones, support wireless charging, we no longer need to waste time and effort to find chargers and charging data. With no cord or socket, you can charge your phone without physically connecting it to any power source, and don't worry about your phone failing to turn on because of a dead battery. [0003] However, at present, the maximum power of wireless charging in mobile phones is limited by heat dissipation, and the charging current is limited. In order to further increase the charging speed, it is necessary to improve the efficiency of wireless charging. Wireless charging is mainly b...

Claims

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Application Information

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IPC IPC(8): H02J7/02H02J5/00H02J50/12H02J50/40H01F27/28H01F27/29H01F27/34H01F38/14
CPCH02J50/12H01F27/34H02J5/00H01F27/28H01F27/2871H01F27/292H01F27/346H01F38/14H01F2027/348H02J50/005H02J50/402H02J50/70H02J50/10H01F27/2823
Inventor 裴昌盛朱勇发杨和钱蔡锦森
Owner HUAWEI TECH CO LTD
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