Foreign matter detection method and device for wireless charging and medium

• Main Authors: ZHOU CHAO, CHEN QIANG, SHANG YONGYI, GOU GE
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention provides a foreign matter detection method and device for wireless charging and a medium, and relates to the technical field of wireless charging. The method comprises the following steps: sending a charging detection signal to a to-be-charged device in a plurality of detection periods by using a coil; using a coil to receive a detection response signal sent by the to-be-charged device in each detection period; processing the detection response signal in each detection period to generate a detection result of each detection period; and determining whether foreign matters exist on the wireless charging device or not according to the detection results in the plurality of detection periods. The charging detection signal is sent to the to-be-charged device, the detection response signal is received, the detection response signal is processed to obtain the detection result of each detection period, whether the foreign matter exists on the wireless charging device or not can be determined based on the