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Asymmetric three-rectangular structure wireless power transmission coil and application thereof

A wireless power transfer, rectangular coil technology, applied in transformer/inductor coils/windings/connections, circuits, inductors, etc.

Pending Publication Date: 2020-10-23
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an asymmetrical three-rectangular structure wireless power transmission coil and its application in order to overcome the above-mentioned defects in the prior art. Transmission, which solves the problem of long-distance transmission in special applications, and can ensure that the magnetic field of the transmitting coil is uniform in the case of short-distance transmission, so that the receiving device has a high degree of freedom of offset

Method used

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  • Asymmetric three-rectangular structure wireless power transmission coil and application thereof
  • Asymmetric three-rectangular structure wireless power transmission coil and application thereof
  • Asymmetric three-rectangular structure wireless power transmission coil and application thereof

Examples

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Embodiment 1

[0030] The invention relates to an asymmetric three-rectangular structure wireless power transmission coil, which is applied to occasions where the size of a receiving device requiring wireless power transmission is small. The invention adopts a double coil structure, that is, includes a transmitting coil and a receiving coil. Both the coil and the receiving coil are rectangular coils with asymmetric shapes.

[0031] Generally, under high-frequency conditions, the copper wire can conduct current only at a depth of about 0.2mm on the surface, and there is no current passing through the wire. It is called Litz wire, so the transmitting coil in the embodiment of the present invention is wound with Litz wire. The outer ring of the transmitting coil adopts a rectangular winding method to improve the coupling coefficient and improve the transmission efficiency. In addition, a rectangular coil is added to the inner ring, connected to the outer ring, as a transmitting coil, so that t...

Embodiment 2

[0036] In this embodiment, a wireless charging coil is provided. In the actual application of wireless power transmission, the wireless charging coil includes a transmitting end and a receiving end. The transmitting end is used to transmit electromagnetic induction signals to electric equipment, and the receiving end is used to Receive the electromagnetic induction signal emitted by the charging device.

[0037] Preferably, the transmitting end can be set as the transmitting end fixing plate and shielding layer 3 , the transmitting end magnetic medium layer 7 and the transmitting end coil layer 4 distributed sequentially from top to bottom. The receiving end is arranged as a receiving end coil layer 6, a receiving end magnetic medium layer 8, and a receiving end fixing plate and shielding layer 5 distributed sequentially from top to bottom. The coil layer 4 at the transmitting end is arranged corresponding to the coil layer 6 at the receiving end. The specific structure of th...

Embodiment 3

[0039] In this embodiment, a wireless charging device is provided. The wireless charging device of this embodiment includes the wireless charging coil with the above-mentioned transmitting end. When the wireless charging coil with the transmitting end is included, the wireless charging device of this embodiment is Wireless charger.

[0040] Alternatively, the wireless charging device of this embodiment includes the wireless charging coil having the above-mentioned receiving end, and when the wireless charging coil having the receiving end is included, the wireless charging device of this embodiment is an electric device.

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Abstract

The invention relates to an asymmetric three-rectangular structure wireless power transmission coil and application thereof. The coil is used for providing current transmission for a small-size wireless electric energy transmission receiving device. The wireless power transmission coil comprises a transmitting coil and a receiving coil which are of an asymmetric rectangular structure. The size ofthe receiving coil is far smaller than that of the transmitting coil, the transmitting coil is provided with an outer ring rectangular coil wound in a rectangular mode, the inner end wound by the outer ring rectangular coil is connected with an inner ring rectangular coil wound in a rectangular mode, and the size of the inner ring rectangular coil is smaller than that of the outer ring rectangularcoil. Compared with the prior art, the invention has the advantages of adapting to the special application field of smaller size of the receiving device, improving the transmission efficiency of thecoil and the like.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to an asymmetrical three-rectangular structure wireless power transmission coil and its application. Background technique [0002] The current wireless charging technology has three types: electromagnetic induction type, magnetic coupling resonance type, and radio wave type. The field of application of wireless charging technology is also relatively wide. In recent years, the efficiency and power of wireless charging systems have been continuously improved, and the application scope involves military, medical, automotive, industrial and other fields. At the same time, the rapid growth in demand for consumer electronics has also contributed to the rapid development of the wireless charging market. [0003] In the above applications, the coils with the same or approximately the same size and structure are mainly used as the research objects. However, in some har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/34H01F38/14H02J50/10H02J50/70
CPCH01F27/28H01F27/346H01F38/14H02J50/10H02J50/70
Inventor 郑春生蒋赢伏永浩高金玲杨文涛黄蓉蓉
Owner SHANGHAI DIANJI UNIV