Hollow magnetic core device for wireless charging and wireless power supply

A wireless power supply and wireless charging technology, which is applied to circuit devices, transformer/inductor cores, electromagnetic wave systems, etc., can solve the problems of aligning the position and direction of the excitation coil and the receiving coil, achieve small size, and improve coupling efficiency , the effect of high-efficiency coupling

Inactive Publication Date: 2015-02-11
天津榕丰科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a hollow magnetic core device for wireless charging and wireless power supply. The invention solves the problems that the excitation coil and

Method used

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  • Hollow magnetic core device for wireless charging and wireless power supply
  • Hollow magnetic core device for wireless charging and wireless power supply
  • Hollow magnetic core device for wireless charging and wireless power supply

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[0021] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the embodiments of the present invention in detail.

[0022] In order to solve the problems of the need to align the position and direction of the excitation coil and the receiving coil, and improve the efficiency of wireless charging and wireless power supply, an embodiment of the present invention provides a hollow magnetic core device used in wireless charging and wireless power supply, see figure 1 with figure 2 , Including: the excitation device 1, the excitation device 1 includes: a flat magnetic core 11 and a first coil 12, the first coil 12 is wound on the flat magnetic core 11. The hollow magnetic core device further includes: a receiving device 2 matched with the excitation device 1, and the receiving device 2 includes: a square hollow magnetic core 21 and a second coil 22. The flat magnetic core 11 and the square hollow magnetic ...

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Abstract

The invention discloses a hollow magnetic core device for wireless charging and wireless power supply. The hollow magnetic core device comprises an excitation device for emitting electromagnetic energy and a receiving device for receiving the electromagnetic energy, wherein the excitation device comprises a flat magnetic core on which a first coil is wound; the receiving device comprises a square hollow magnetic core on which a second coil is wound; a magnetic core plane parallel resonant electromagnetic coupling mode is adopted for the flat magnetic core and the square hollow magnetic core. According to the device, the magnetic core design is adopted for both the excitation device and the receiving device, so that the coupling efficiency of the excitation device and the receiving device is improved, the wireless charging and wireless power supply efficiency are further greatly improved, and the whole device is smaller in size; a circuit of a wirelessly-powered or wirelessly-charged electronic device can be totally or partially placed in the square hollow magnetic core, so that the interference of an electromagnetic field emitted by the excitation device or other electromagnetic fields is avoided.

Description

technical field [0001] The invention relates to the field of electromagnetic coils, in particular to a hollow magnetic core device for wireless charging and wireless power supply. Background technique [0002] For convenience, more and more electronic devices in the prior art are equipped with wireless power supply or wireless charging. However, the existing wireless power supply or wireless charging technology needs to align the position and direction of the excitation coil and the receiving coil, otherwise the efficiency of wireless power supply or wireless charging will be greatly affected, and sometimes it will not work at all. [0003] In practical application, it is not easy to align the position and direction of the excitation coil and the receiving coil in many applications, for example, it is difficult for electronic devices buried in the human body to meet this requirement. [0004] Chinese invention patent application CN103070699A discloses a wireless smart charg...

Claims

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Application Information

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IPC IPC(8): H01F38/14H01F27/30H01F27/24H02J17/00H02J50/10
Inventor 李刚朱广峰林凌李斌吕辰偲吴霜王洁郑海伟
Owner 天津榕丰科技有限公司
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