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Coil, manufacturing method thereof, transmitting coil, receiving coil and wireless power supply system

A technology of transmitting coil and receiving coil, applied in the direction of transformer/inductor coil/winding/connection, inductance/transformer/magnet manufacturing, circuit, etc. Coupling coefficient and inductance coefficient, the effect of satisfying the coil coupling coefficient and inductance coefficient, and meeting the requirements of design parameters

Inactive Publication Date: 2019-04-26
北京酷能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a coil and its manufacturing method, a transmitting coil, a receiving coil and a wireless power supply system to solve the technical problem that the coils in the prior art cannot meet the requirements for coupling coefficient and inductance

Method used

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  • Coil, manufacturing method thereof, transmitting coil, receiving coil and wireless power supply system
  • Coil, manufacturing method thereof, transmitting coil, receiving coil and wireless power supply system
  • Coil, manufacturing method thereof, transmitting coil, receiving coil and wireless power supply system

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Embodiment 1

[0036] An embodiment of the present invention provides a coil.

[0037] Specifically, please refer to Figure 2 to Figure 4 , figure 2 is a top view of an optional coil provided by an embodiment of the present invention, image 3 is a side view of an optional coil provided by the embodiment of the present invention, wherein the mark 10 is used to indicate the width of the coil, for example, it may be 100mm, Figure 4 yes figure 1 A cross-sectional view of the coil along A-A is shown, wherein the mark 20 is used to indicate the width of the flat litz wire.

[0038] combine figure 2 with image 3 It can be seen that the coil is made of flat Litz wire wound closely with multiple turns. Among them, the coils are superimposed and wound along the thickness direction of the flat Litz wire, that is, vertically wound, such as image 3 shown.

[0039] The coil provided by the embodiment of the present invention has the following improvements:

[0040] 1) Change the cross-sectio...

Embodiment 2

[0060] The embodiment of the present invention also provides a transmitting coil.

[0061] The transmitting coil provided in the embodiment of the present invention is the coil provided in the embodiment of the present invention, and is used as a power supply side in a wireless charging magnetic coupling mechanism.

[0062] The transmitting coil provided by the embodiment of the present invention adopts the structure of the coil provided by the embodiment of the present invention, and uses a litz wire with a flat cross section to overlap and wind multiple turns along the thickness direction, so that the width of the transmitting coil formed after the litz wire is wound is Fixed, only increased thickness. Since the coupling coefficient of the transmitting coil increases first and then decreases with the increase of the total width of the transmitting coil, the requirement for the inductance of the transmitting coil is also the requirement for the number of turns. At the same t...

Embodiment 3

[0065] The embodiment of the present invention also provides a wireless power supply system.

[0066] The wireless power supply system provided by the embodiment of the present invention includes the transmitting coil provided by the embodiment of the present invention, and a power supply module, wherein the power supply module is used to provide power for the transmitting coil.

[0067] The wireless power supply system provided by the embodiment of the present invention adopts the transmitting coil provided by the embodiment of the present invention. Since the transmitting coil provided by the embodiment of the present invention utilizes a litz wire with a flat cross section, multiple turns are stacked and wound along the thickness direction, so that the width of the transmitting coil formed after the litz wire is wound remains constant, and only the thickness is increased. Since the coupling coefficient of the transmitting coil increases first and then decreases with the inc...

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Abstract

An embodiment of the invention provides a coil, a manufacturing method of the coil, a transmitting coil, a receiving coil and a wireless power supply system. The coil adopts a litz wire with the flat-shaped cross section, the litz wire is wound in a plurality of turns in the thickness direction so that the width of the coil formed after winding of the Litz wire is fixed, and only the thickness isincreased. Since a coupling coefficient of the coil increases first and then decreases with the increase of the total width of the coil, the inductance requirement of the coil is also required, that is, the requirement for the number of turns. The coil width can remain unchanged while the number of turns is changed. Therefore, the coil can meet the requirements of coil design parameters more conveniently, and the designed coil coupling coefficient and the inductance coefficient can be met more easily.

Description

【Technical field】 [0001] The invention relates to the technical field of wireless charging, in particular to a coil and a manufacturing method thereof, a transmitting coil, a receiving coil and a wireless power supply system. 【Background technique】 [0002] In the prior art, the coil is usually made of a wire with a square or circular cross-section wound in multiple turns in the same plane, such as figure 1 shown. In the magnetic coupling mechanism, the coupling coefficient is an important index. Usually, the larger the coupling coefficient is required, the better. When the external size and distance of the primary and secondary coils are fixed, the coupling coefficient is closely related to the total width of the coil. As the total width of the coil increases, the coupling coefficient first increases and then decreases. At the same time, while satisfying the coupling coefficient, the coil also has an inductance requirement, that is, the coil also has a requirement for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F38/14H01F41/061H02J50/10B60L53/12
CPCH01F27/2847H01F38/14H01F41/061H02J50/10Y02T10/70Y02T10/7072Y02T90/14
Inventor 谢彦君梁立科
Owner 北京酷能科技有限公司