Title:
FOREIGN MATTER DETECTION DEVICE, POWER TRANSMISSION DEVICE, POWER RECEPTION DEVICE, AND POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/131609
Kind Code:
A1
Abstract:
This foreign matter detection device comprises: a plurality of coils (242) which are arranged adjacent to each other on an arrangement surface and generate a vibration signal in response to being excited; and a detection unit (26) which is connected to the plurality of coils (242) and detects whether there is foreign matter on the basis of the response signal of each coil (242). The arrangement surface has a first region in which a plurality of first coil sets including at least two coils (242) are divided. The detection unit (26) detects whether there is foreign matter on the basis of the vibration signal of each coil (242) constituting a plurality of first coil sets. The first coil set has a different combination of coils (242) constituting each first coil set, and one coil (242) constituting at least one first coil set and one coil (242) constituting the other one first coil set are common.
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Inventors:
GOTANI AKIRA (JP)
Application Number:
PCT/JP2020/045219
Publication Date:
July 01, 2021
Filing Date:
December 04, 2020
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
H01F38/14; B60L53/124; H02J7/00; H02J50/60
Foreign References:
| JP2017504784A | 2017-02-09 | |||
| JP2018107945A | 2018-07-05 | |||
| JP2012016125A | 2012-01-19 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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