Title:
ELECTRIC POWER TRANSFER DEVICE AND METHOD FOR CONTROLLING SAME, ELECTRIC POWER RECEIVER, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/095592
Kind Code:
A1
Abstract:
In the present invention, an electric power transfer device 402 that has a plurality of electric power transfer coils selects a plurality of electric power transfer coils for wirelessly transferring electric power to an electric power reception device 401 in order to wirelessly transfer electric power, using an electric power transfer device that has a plurality of electric power transfer coils, to an electric power receiver that has an electric power reception coil, while detecting foreign objects using waveform attenuation for each electric power transfer coil (detecting foreign objects based on the results from measuring the state of attenuation of an electric power transfer waveform). Prior to initiating electric power transfer, the electric power transfer device 402 acquires waveform attenuation indices regarding the selected electric power transfer coils. The waveform attenuation indices express the state of attenuation of waveforms during a period in which electric power transfer is limited. Additionally, after initiating electric power transfer, the electric power transfer device 402 receives a request for foreign object detection via waveform attenuation from the electric power receiver 401, and performs foreign object detection using the waveform attenuation method via the electric power transfer coils that are transferring electric power. On the basis of the plurality of acquired waveform attenuation indices, the electric power transfer device 402 acquires foreign object detection results that correspond to the number of electric power transfer coils, and controls the electric power transfer.
Inventors:
MIZUMORI RYUTA (JP)
Application Number:
PCT/JP2023/031862
Publication Date:
May 10, 2024
Filing Date:
August 31, 2023
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H02J50/60; H02J50/12; H02J50/80
Domestic Patent References:
| WO2021161966A1 | 2021-08-19 |
Foreign References:
| JP2020114170A | 2020-07-27 | |||
| US20220052561A1 | 2022-02-17 |
Attorney, Agent or Firm:
TAKAOKA, Ryoichi et al. (JP)
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