Patent ID: 11870274
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless charging device, comprising:
a charging pad having a plurality of charging units, including a first charging unit and a second charging unit adjacent to each other, wherein every two adjacent charging units are connected to each other; and
a first controller to:
obtain a first electromagnetic coupling strength between the first charging unit and a target device to be charged and a second electromagnetic coupling strength between the second charging unit and the target device,
determine to charge the target device by using only the first charging unit, when the first electromagnetic coupling strength is greater than or equal to a first threshold, and
determine to charge the target device by using both the first charging unit and the second charging unit, when both the first electromagnetic coupling strength and the second electromagnetic coupling strength are less than the first threshold, and are greater than or equal to a second threshold,

wherein the first threshold is a first predetermined minimum value that needs to be satisfied by the first electromagnetic coupling strength when the target device is capable of being charged using only the first charging unit, and wherein the second threshold is a second predetermined minimum value when the first electromagnetic coupling strength is equal to the second electromagnetic coupling strength and that needs to be satisfied by the first electromagnetic coupling strength when the target device is capable of being charged using both the first charging unit and the second charging unit.