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Power transmission device and contactless power supply system

A technology of power transmission and power reception, applied in circuit devices, radio wave measurement systems, transmission systems, etc., can solve the problem of expensive detection methods, and achieve the effect of improving detection accuracy

Active Publication Date: 2017-11-21
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, detection methods using sensors over a wide power supply range, such as by magnetic resonance based systems, can be expensive
Furthermore, the use of a temperature sensor, for example, may create additional design constraints on the sending and receiving devices, since the output from the temperature sensor will depend on the thermal conductivity in its vicinity

Method used

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  • Power transmission device and contactless power supply system
  • Power transmission device and contactless power supply system
  • Power transmission device and contactless power supply system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0041] 2. First Embodiment (Example of Magnetic Coupling Element with Figure 8 Detector Coil)

no. 2 approach

[0042] 3. Second Embodiment (Example of Magnetic Coupling Element Having a Zigzag Detector Coil)

no. 3 approach

[0043] 4. Third Embodiment (Example of Magnetic Coupling Element with Lattice-shaped Detector Coil)

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PUM

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Abstract

The present invention relates to a power transmission device and a contactless power supply system. The power transmission apparatus includes a first coil in a first layer, a second coil in the second layer that overlaps the first coil, and a third coil in a third layer that is connected to the first coil, wherein the first dimension of the first innermost periphery of the first coil is greater than the second dimension of the second innermost periphery of at least one of the second coil and the third coil.

Description

[0001] This application is a divisional application of a patent application with an application date of March 6, 2013, an application number of 201310070594.9, and an invention title of "detection device, power receiving device, and power transmitting device", the entire contents of which are hereby incorporated by reference. technical field [0002] The present disclosure relates to a magnetic coupling element magnetically coupled with another magnetic coupling element or a foreign object, and a device (magnetic coupling device) and system (magnetic coupling system) using the magnetic coupling element. [0003] More specifically, the present disclosure relates to a detecting device, a power receiving device, a power transmitting device, and a non-contact power supply system configured to detect the presence of a foreign object (such as a metal, a magnetic body, or a magnet) Heat is generated by providing magnetic flux between the non-contact power supply device of the system a...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02J50/60H02J50/40G01V3/10
CPCH02J50/12H02J50/40H02J50/60G01V3/105H02J50/70H02J50/80G01V3/101H02J7/00034H04B5/263H04B5/79G01N27/72G01N27/00
Inventor 宫本宗森康平村上知伦
Owner SONY CORP