Power transmission equipment, methods used by power transmission equipment, and programs
The power transmission device improves foreign object detection accuracy by measuring the Q-value during power transmission restriction periods, addressing interference issues and combining it with power loss detection for reliable object identification.
JP2026110779APending Publication Date: 2026-07-02CANON KK
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CANON KK
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-02
Smart Images
Figure 2026110779000001_ABST
Abstract
When foreign object detection is performed based on voltage or current measurement results during periods when power transmission is interrupted, the decrease in detection accuracy is suppressed. [Solution] The power transmission device 101 includes a communication unit 206 that communicates wirelessly with the power receiving device using an antenna, a power transmission unit 203 that wirelessly transmits power to the power receiving device using an antenna, a detection unit 204 that measures at least one of the voltage and current output from the antenna during periods when power transmission is stopped and communication by the communication unit 206 is not performed, and determines, based on the measurement results, that an object other than the power receiving device exists, and a control unit 201 that restricts power transmission if it is determined that an object other than the power receiving device exists.
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