Foreign matter detection device and power transmission device
US11731521B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Aug 19, 2019 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Sep 12, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A foreign object detection device detects, during wireless power transfer from a power transmission unit of a power transmission device to a power reception unit of a power reception device, a foreign object on the power transmission unit, and comprises: a temperature sensitive body that is disposed at the power transmission unit and changes a color with temperature; and a detection unit that detects the foreign object by detecting a change in the color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.