An explosion-proof wireless charging loosely coupled transformer and wireless charging device
A loosely coupled transformer and wireless charging technology, applied in transformer/inductor cores, transformers, circuit devices, etc., can solve the problems of low coupling coefficient, large excitation current, large leakage inductance, etc., to improve safety performance, improve Effect of heat dissipation intensity and capacitance value reduction
Active Publication Date: 2020-09-29
南京和若源电气有限公司
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Problems solved by technology
There is a relatively large air magnetic circuit in the magnetic circuit of the loosely coupled transformer, and a considerable part of the magnetomotive force is consumed in the air magnetic circuit, so a large excitation current is required, resulting in a large leakage inductance and a low coupling coefficient
Method used
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Embodiment 1
[0030] It is known from the prior art that a loosely coupled transformer is composed of a primary coil, a primary magnetic core, a secondary coil and a secondary magnetic core, and is applied in a wireless energy transmission system. Due to the large air gap between the primary side and the secondary side of the loosely coupled transformer, the magnetic flux path between the primary side and the secondary side of the loosely coupled transformer can be basically divided into two parts: one is the magnetic flux inside the magnetic core near the coil The second is the magnetic flux in the air gap. Take the loosely coupled transformer formed by a circular coil and a flat magnetic core as an example, as shown in Figures 1 and 2, assuming that there is a reluctance Rs in the self-coupling area and a reluctance Rm in the mutual coupling area, Φ1 is the total magnetic flux on one side, Φs is the magnetic flux of the self-coupling part, Φm is the magnetic flux of the mutual coupling pa...
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Abstract
The invention discloses an anti-explosion type wireless charging loose coupling transformer and a wireless charging device. The transformer is applied to an anti-explosion robot, and comprises a transformer original side and a transformer auxiliary side. The transformer original side and the transformer auxiliary side each comprise a magnetic core and a coil. Each magnetic core comprises a magnetic base, first magnets, a magnetic column, magnetic strips and a second magnet, wherein the magnetic base is in a square flat plate shape, the first magnets are horizontally arranged on the upper lateral side and the lower lateral side of the magnetic base, the magnetic column is arranged at the center of the magnetic base in the width direction of the magnetic base, the magnetic strips are vertically arranged on the left lateral side and the right lateral side of the magnetic base, and the second magnets are perpendicular to the upper end faces of the first magnets. Each coil is of an annularstructure and sleeves the corresponding magnetic column. By means of the unique magnetic core structure, the high coupling coefficient and high transmission efficiency of the loose coupling transformer are realized, and the low switching frequency of the wireless charging device can meet the requirements for an anti-explosion environment.
Description
technical field [0001] The invention belongs to the field of wireless energy transmission, and in particular relates to an explosion-proof wireless charging loose coupling transformer and a wireless charging device. Background technique [0002] As a new type of power transmission technology, wireless power transmission technology has attracted widespread attention. Wireless power transmission mainly uses the principle of magnetic field coupling to achieve power transmission, and then can realize wireless charging of devices, and has the advantages of safe operation, waterproof and dustproof and It is easy to maintain and other features, making it safe to charge in special environments such as high cold and humidity. As a kind of special robot, explosion-proof robot plays an important role in the work in high-risk places. When the explosion-proof robot needs to be charged in a flammable and explosive environment, the charging process needs to meet the national IIC explosion...
Claims
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IPC IPC(8): H01F38/14H01F27/24H02J50/12H02J50/70
CPCH01F27/24H01F38/14H02J50/12H02J50/70
Inventor 罗进沐扣晓柯晓东徐笑娟
Owner 南京和若源电气有限公司