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Foreign matter detecting device

A foreign object detection and foreign object technology, applied in measuring devices, circuit devices, geophysical measurements, etc., can solve problems such as fire and device failure, and achieve the effect of improving detection accuracy

Pending Publication Date: 2021-02-23
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a case, the foreign matter may be ignited by induction heating during power transmission, or the device may malfunction due to heat generation of the foreign matter

Method used

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Examples

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Embodiment Construction

[0061]Hereinafter,Figure oneThe foreign matter detecting device of one embodiment of the present invention will be described. The foreign matter detecting device has a transmission coil (hereinafter, referred to as a power transmission device) of a power transmission side configured to transmit power through a non-contact manner (hereinafter, apparatus (hereinafter, referred to as The substrate between the receiving coils of the power receiving device, and has a plurality of detection coils that are formed on the substrate capable of electromagnetically coupling each other. Each of the plurality of detected coils can be different from the frequency of power supplied to the transmitting coil of the power transmission device (in the case where the resonant circuit is provided on the power transmission side) and the resonant circuit including the receiving coil. Any one of all unsuccessful frequencies are resonant. The foreign matter detecting device is supplied to a plurality of detec...

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Abstract

The invention provides a foreign matter detecting device capable of improving the detection precision of foreign matters mixed between a transmitting coil of a device at a power transmission side anda receiving coil of a device at a power receiving side. A foreign matter detecting device includes a plurality of detection coils disposed so as to be capable of being electromagnetically coupled to each other between a transmission coil of a power transmission device and a reception coil of a power reception device between which power is transmitted in a non-contact manner, a plurality of capacitors each forming a resonance circuit together with each of the plurality of detection coils, a power supply circuit supplying AC power having a predetermined frequency to an input coil that is one ofthe plurality of detection coils, and a detection circuit detecting a voltage of AC power transmitted via the plurality of detection coils from an output coil that one of the plurality of detection coils and is different from the input coil, and detecting foreign matter entrapped between the transmission coil and the reception coil according to the voltage detected.

Description

Technical field[0001]The present invention relates to a foreign matter detecting device for detecting foreign matter in a power transmission system transmitted in a non-contact manner.Background technique[0002]It has always been studied in the study of the so-called non-contact power supply (also known as wireless power supply) technology that does not via metal contact or the like. As one of such a non-contact power supply technology, it is known to supply power by electromagnetic induction. In a manner that is powered by electromagnetic induction, a coil (hereinafter referred to as a transmission coil) and the secondary side (by power-by-side) coil (hereinafter referred to as a receiving coil) by the electromagnetic induction. Electromagnetic coupling is performed, and power is transmitted from the transmitting coil to the receiving coil.[0003]In such a power transmission system using a non-contact power supply technology, foreign matter such as metallic substances enters the tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/60H02J50/10H02J50/12G01V3/10
CPCH02J50/60H02J50/10H02J50/12G01V3/10H02J50/402H02J50/502G01V3/105
Inventor 中尾悟朗今泽孝则
Owner ORMON CORP