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A method and device for improving weakly coupled wireless power transmission gain

A technology of wireless power transmission and weak coupling, applied in the direction of circuit devices, electrical components, etc., can solve the problem of low gain of wireless power transmission, achieve the effect of improving the gain of wireless power transmission, optimizing the phase relationship, and being easy to implement

Active Publication Date: 2021-03-30
深圳市华禹无线供电技术有限公司
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  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a method and device for improving the gain of weakly coupled wireless power transmission to solve the problem of low gain of traditional single transmitting coil wireless power transmission

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  • A method and device for improving weakly coupled wireless power transmission gain
  • A method and device for improving weakly coupled wireless power transmission gain
  • A method and device for improving weakly coupled wireless power transmission gain

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Such as figure 1 As shown, the embodiment of the present invention provides a method for improving the gain of weakly coupled wireless power transmission, including:

[0030] S100: Setting multiple transmitting coil elements at the transmitting end of wireless power transmission to form a transmitting coil array, each transmitting coil element is connected to a power amplifier, and according to the influence of the coupling between every two transmittin...

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Abstract

The invention provides a method and a device for improving a weak coupling wireless electric energy transmission gain. A plurality of transmitting coil elements are arranged on a transmitting end to form a transmitting coil array, each transmitting coil element is independently connected with a power amplifier, and the output impedance of each power amplifier is regulated according to the influence of every two transmitting coil elements for the integral power gain; and meanwhile, according to a situation that phase displacement between each transmitting coil element of the transmitting end and the receiving coil element of a receiving end is different, the phase of each power amplifier is regulated so as to compensate the phase of the transmitting coil element of the transmitting end. Byuse of the method and the device, the energy transmission gain is improved, so that wireless electric energy transmission can be easily realized, and the method and the device can be applied to smallequipment, including handheld mobile equipment and the like.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission power gain, and in particular relates to a method and device for improving weakly coupled wireless power transmission gain. Background technique [0002] Near-field coupled wireless power transfer is a major technology for charging wirelessly powered devices such as radio frequency identification tags, sensors, and medical implants. Traditional wireless power transmission uses a two-coil transmission structure, that is, a large coil at the transmitting end and a small coil at the receiving end. The symmetry and size of the transmitting coil and the receiving coil restrict the gain of wireless power transmission. In addition, the high-frequency alternating current Skin effect also limits the gain effect of conventional wireless power transfer. Miniaturization is a new key requirement for applications in the Internet of Things and implantable medical devices due to its large bot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/40
CPCH02J50/12H02J50/40
Inventor 李佳李刚范惠子周洪邓其军胡文山周东国
Owner 深圳市华禹无线供电技术有限公司
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