A high-efficiency single-strand coil for wireless power transmission

A wireless power transmission, high-efficiency technology, applied in the direction of transformer/inductor coil/winding/connection, circuit, inductor, etc., can solve the problem of difficult design of wireless power transmission system, and achieve reduced size and weight, large transmission The effect of efficiency

Active Publication Date: 2022-07-29
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Wireless power transmission is a new energy transmission method in recent years. Compared with the traditional wired power transmission method, it has some incomparable advantages. It has extremely broad application prospects in medical equipment, space power generation and daily life. ;Wireless energy transmission uses special equipment to convert the electric energy of the power supply into wirelessly propagated energy such as electromagnetic fields or electromagnetic waves, and converts the wireless energy back to electric energy at the receiving end. The existing technology usually uses electromagnetic induction, electromagnetic resonance and electromagnetic radiation. , the research direction mainly includes improving the transmission power and efficiency, reducing the volume and weight of the wireless power transmission system, applying the wireless power transmission system to more occasions, etc.; MHz-level high-frequency wireless power transmission, compared with hundreds of KHz-level frequency For example, it can achieve higher efficiency and longer distance power transmission, but the design of MHz-level wireless power transmission system is relatively more difficult, there are more factors to be considered, and more requirements for coils. Therefore, it is necessary to design a single-strand copper coil that can achieve greater transmission efficiency with a smaller coil diameter

Method used

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  • A high-efficiency single-strand coil for wireless power transmission
  • A high-efficiency single-strand coil for wireless power transmission
  • A high-efficiency single-strand coil for wireless power transmission

Examples

Experimental program
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Effect test

Embodiment 1

[0020] like Figure 1-4 As shown, a high-efficiency single-strand coil for wireless power transmission includes a wire body 7, and the single-strand coil is formed by winding a single wire body 7 according to a certain form, and the wire body 7 is a bullet in cross-section. A head-shaped elongated conductor, the lead body 7 includes an inner support body 5 and a conductive plating layer 6, and the conductive plating layer 6 covers the outer surface of the inner support body 5, and the inner support body 5 and all The conductive coating 6 is made of plastic material; the cross section of the conductor body 7 includes an outer end face 1, an upper plane 2, a lower plane 3 and an inner arc surface 4, the outer end face 1, the upper plane 2 and the The lower plane 3 is a plane, and the inner arc surface 4 is a circular arc surface; d As an optimization indicator, satisfy the efficiency formula The optimal coil cross-section where dQ d =Q T , Q T is the power factor of the co...

Embodiment 2

[0023] like Figure 1-4 As shown, a high-efficiency single-strand coil for wireless power transmission includes a wire body 7, and the single-strand coil is formed by winding a single wire body 7 according to a certain form, and the wire body 7 is a bullet in cross-section. A head-shaped elongated conductor, the lead body 7 includes an inner support body 5 and a conductive plating layer 6, and the conductive plating layer 6 covers the outer surface of the inner support body 5, and the inner support body 5 and all The conductive coating 6 is made of plastic material; the cross section of the conductor body 7 includes an outer end face 1, an upper plane 2, a lower plane 3 and an inner arc surface 4, the outer end face 1, the upper plane 2 and the The lower plane 3 is a plane, and the inner arc surface 4 is a circular arc surface; d As an optimization indicator, satisfy the efficiency formula The optimal coil cross-section where dQ d =Q T , Q T is the power factor of the co...

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Abstract

The invention belongs to the technical field of wireless power transmission, in particular to a high-efficiency single-strand coil for wireless power transmission; it includes a wire body, and the single-strand coil is formed by winding a single wire body according to a certain form, and the wire The body is an elongated conductor with a bullet-shaped cross section, the wire body includes an inner support and a conductive coating, the conductive coating is coated on the outer surface of the inner support, the inner support and the The conductive plating layers are all plastic materials; the cross-section of the conductor body includes an outer end surface, an upper plane, a lower plane and an inner arc surface, and the outer end surface, the upper plane and the lower plane are all planes, and the inner plane The arc surface is a circular arc surface; the single-strand coil provided by the present invention can obtain greater transmission efficiency with a smaller coil diameter, can effectively reduce the volume and weight of wireless power transmission, and apply the wireless power transmission system to more occasions .

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, in particular to a high-efficiency single-strand coil for wireless power transmission. Background technique [0002] Wireless power transmission is a new energy transmission method in recent years. Compared with the traditional wired power transmission method, it has some incomparable advantages of wired power transmission. It has extremely broad application prospects in medical equipment, space power generation and daily life. ; Wireless power transmission converts the electrical energy of the power supply into wireless energy such as electromagnetic fields or electromagnetic waves by means of special equipment, and converts the wireless energy back to electrical energy at the receiving end. The existing technology usually uses electromagnetic induction, electromagnetic resonance and electromagnetic radiation. , the research direction mainly includes improving the transmissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/14H01F27/28H01F27/32
CPCH01F38/14H01F27/28H01F27/32
Inventor 王瑞琦李明明闫志刚罗碧华万涛陈钊秦琦牛新萍刘路殷俊河李卫军黄恒硕吴超吴贺伟宋志勇闫娇赵毅翟玲玲赵航刘宏伟张少博
Owner STATE GRID CORP OF CHINA
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