A wireless energy transmission device
A wireless energy transmission and energy technology, applied in circuit devices, transformer/inductor coils/windings/connections, transformers, etc., can solve the problems of low mutual inductance coupling coefficient, large number of magnets, short transmission distance, etc., and achieve high coupling coefficient , The effect of reducing the weight of the magnet and improving the mutual inductance coupling coefficient
Active Publication Date: 2016-06-01
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology
[0008] The purpose of the present invention is to overcome the shortcomings of low coil mutual inductance coupling coefficient, short transmission distance, large number of magnets and large loss between the energy sending device and the energy receiving device in the prior art, and propose a new wireless energy transmission device coil and magnet structure
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[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0038] The embodiment of the present invention adopts a circular coil structure. In addition to the circular coil, coils in the form of regular polygons can also be used.
[0039] The wireless energy transmission device of the present invention includes two parts: an energy sending device and an energy receiving device. The time-varying electromagnetic field is converted into high-frequency alternating current. The energy sending device is composed of a sending coil and a sending magnet, and the energy receiving device is composed of a receiving coil and a receiving magnet. Both the energy sending device and the energy receiving device of the wireless energy transmission device include two structures: a single coil structure and a double coil structure.
[0040] In the wireless energy transmission device with a single coil structure, the ener...
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Abstract
The invention discloses a wireless energy transmission device. A single-coil structure and a double-coil structure are adopted for a coil of an energy transmitting device of the wireless energy transmission device. A single-coil structure and a double-coil structure are adopted for a coil of an energy receiving device of the wireless energy transmission device. The single-coil energy transmitting device comprises a first transmission coil (11) and a first transmission magnet (12). The first transmission magnet (12) and a second transmission magnet (23) of the energy transmitting device and a first receiving magnet (14) and a second receiving magnet (26) of the energy receiving device are respectively composed of eight identical magnet bodies, wherein each magnetic body is in a cross shape, the eight magnet bodies are placed on the same plane flat and spread into a fan shape around the central point of the first transmission coil, or a second transmission coil, or a first receiving coil or a second receiving coil, the included angle formed between the center lines of every two adjacent magnet bodies is 45 degrees, and the intersection point of the cross shape of each magnet body coincides with the central position of the outmost circle of the first transmission coil, or the second transmission coil, or the first receiving coil or the second receiving coil.
Description
technical field [0001] The invention relates to a device for wireless energy transmission. Background technique [0002] Wireless energy transmission devices have broad application prospects, but existing wireless energy transmission devices are mainly used in electronic equipment charging occasions, with low power and short transmission distances. The application of wireless energy transmission devices in high-power applications (such as electric vehicle charging) is of great significance, and it is also a research hotspot in recent years. However, this kind of application requires the wireless power transmission power to be at least thousands of watts or even hundreds of kilowatts. This level of power transmission must require high power transmission efficiency, otherwise it will not only cause huge energy loss, but also the heat dissipation of the device is also a difficult problem. The problem. [0003] The core of designing high-efficiency and high-power wireless ener...
Claims
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IPC IPC(8): H02J50/10H01F27/25H01F27/28H01F38/14
Inventor 廖承林陈德清王丽芳朱庆伟
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI