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Power transmission coil and wireless power supply device

A power transmission coil and wireless power supply technology, which is applied in the direction of circuits, inductors, electrical components, etc., can solve problems such as current noise and achieve the effect of suppressing adverse effects

Active Publication Date: 2021-12-24
TOYODA GOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, noise may be generated in the current flowing through the receiving coil

Method used

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  • Power transmission coil and wireless power supply device
  • Power transmission coil and wireless power supply device
  • Power transmission coil and wireless power supply device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0039] 1. Power transmission coil

[0040] figure 1 It is a figure which shows the shape of the power transmission coil 110 of this embodiment. exist figure 1 , the number of turns of the power transmission coil 110 is 3 turns. The material of the power transmission coil 110 is a metal wire. Examples of the wire include a single wire and a twisted wire.

[0041] The power transmission coil 110 has two regions surrounding two partitions. The power transmission coil 110 has a first region 111 , a second region 112 , a coupling portion 113 , an end portion 114 , and an end portion 115 . From figure 1 It can be seen that the connected wires are classified into the first region 111 , the second region 112 , the coupling part 113 , the end part 114 and the end part 115 . The first region 111 and the second region 112 are substantially on the same plane.

[0042] 1-1. The first area and the second area

[0043] The first area and the second area respectively transmit powe...

no. 2 Embodiment approach

[0081] The second embodiment will be described. In the second embodiment, a wireless power feeding device suitable for use with the power transmission coil 110 of the first embodiment will be described.

[0082] 1. Vehicle parts

[0083] Figure 6 It is a schematic diagram showing the state of the interior of the vehicle. Such as Figure 6 As shown in , there is a dashboard IP on the front of the driver's seat of the vehicle. A plurality of air-conditioning registers CA1 are installed on the dashboard IP. The air conditioner CA1 has a housing 160 and a knob N1 for adjusting the wind direction by a user. Knob N1 can emit light. This is because the user can easily grasp the position of the knob N1 even when the interior of the vehicle is dark.

[0084] 2. Wireless power supply device

[0085] Figure 7 It is a schematic diagram showing a schematic configuration of the wireless power feeding device 100 according to the first embodiment. The wireless power supply device ...

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Abstract

Provided are a power transmission coil and a wireless power supply device capable of suppressing the failure of a current flowing in a straight line portion to impart a magnetic field to a partition contributing to power supply when the path of the coil has adjacent straight line portions. influences. The power transmission coil (110) has a first area (111) and a second area (112), the first area (111) has a linear path (111d), and the second area (112) has a linear path (112d ). The path in the first area (111) is connected to the path in the second area (112). The first area (111) and the second area (112) are adjacent to each other with a gap therebetween. Path (111d) and path (112d) face each other across a gap. The direction of the current flowing through the path (111d) is the same as the direction of the current flowing through the path (112d).

Description

technical field [0001] The technical field of this specification relates to power transmission coils and wireless power supply devices. Background technique [0002] In recent years, active research and development has been conducted on technologies for wirelessly feeding power to portable communication terminals such as smartphones and other electronic devices. In addition, technology for wireless power feeding of electronic equipment for vehicles is also being developed. [0003] As a coil for wireless power feeding, a coil wound in a figure-eight shape may be used. For example, Patent Document 1 discloses a power supply coil 11a and a power reception coil 21a wound multiple times in a figure-eight shape (refer to Patent Document 1). image 3 Wait). It is disclosed that the directions of currents flowing in two adjacent coil portions in a figure-eight shape are reversed, so that the two coil portions mutually absorb magnetic force lines (paragraph [0043] of Patent Docume...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/14H01F27/34
CPCH01F38/14H01F27/34
Inventor 佐藤真妇木慎一郎菅藤彻今井纯
Owner TOYODA GOSEI CO LTD
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