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Alternating magnetic field coupling system, magnetic field generating equipment and magnetic field receiving equipment

A technology of generating equipment and receiving equipment, applied in the electromagnetic field, can solve problems such as large eddy current loss

Pending Publication Date: 2022-07-12
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another example is a smart watch that includes an alignment magnet for fast and reliable alignment of the charging position. During the charging process of the smart watch, the alignment magnet will also generate large eddy current losses.

Method used

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  • Alternating magnetic field coupling system, magnetic field generating equipment and magnetic field receiving equipment
  • Alternating magnetic field coupling system, magnetic field generating equipment and magnetic field receiving equipment
  • Alternating magnetic field coupling system, magnetic field generating equipment and magnetic field receiving equipment

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Embodiment Construction

[0188] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0189] With the continuous development of the field of electromagnetic technology, the non-contact / wireless transmission of energy or information realized by magnetic field coupling has outstanding convenience and has been used in wireless charging, induction heating, communication and other fields.

[0190] Taking the wireless charging technology using electromagnetic induction technology as an example, in the process of using wireless charging, the transmitting coil in the power supply device that charges the power receiving device converts the high-frequency AC signal into a magnetic field, and the receiving coil in the power receiving device is inductive. This magnetic field is then converted into electrical energy, which is then used to charge the battery of the powered device.

[0191] figure 1 This is a schematic diagr...

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Abstract

The invention provides an alternating magnetic field coupling system, magnetic field generating equipment and magnetic field receiving equipment, the alternating magnetic field coupling system comprises the magnetic field generating equipment and magnetic field sensitive devices, and the magnetic field sensitive devices are arranged on at least one side of the magnetic field generating equipment and the magnetic field receiving equipment; the magnetic field generating device is used for generating a first magnetic field. The magnetic field sensing device is located within the coverage of the first magnetic field. A protection part is arranged around the outer side of the magnetic field sensitive device and generates a second magnetic field opposite to the first magnetic field in direction in the magnetic field sensitive device. The alternating magnetic field coupling system, the magnetic field generating equipment and the magnetic field receiving equipment can reduce the intensity of the alternating magnetic field in the magnetic field sensing device.

Description

technical field [0001] The present application relates to the field of electromagnetic technology, and in particular, to an alternating magnetic field coupling system, a magnetic field generating device, and a magnetic field receiving device. Background technique [0002] With the continuous development of the field of electromagnetic technology, the non-contact / wireless transmission of energy or information realized by magnetic field coupling has outstanding convenience and has been used in wireless charging, induction heating, communication and other fields. [0003] Taking the wireless charging technology using electromagnetic induction technology as an example, in the process of using wireless charging, the transmitting coil in the magnetic field device that charges the power receiving device and the receiving coil in the power receiving device realize wireless power transmission through magnetic field coupling. [0004] However, one or more components included in the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/06H01F7/11H02J50/10H02J50/70
CPCH01F7/06H01F7/11H02J50/10H02J50/70Y02T10/7072
Inventor 汪超李跃超李长远
Owner HUAWEI DIGITAL POWER TECH CO LTD
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