公开(公告)号：US20240313582A1

公开(公告)日：2024-09-19

申请号：US18673718

申请日：2024-05-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Daniel Gil Belo

IPC: H02J50/20 ,  H02J50/40 ,  H02J50/80

CPC classification number: H02J50/20 ,  H02J50/80 ,  H02J50/402

Abstract: A wireless power transfer system includes a wireless power transmitter configured to transmit a query power signal and a wireless power receiver that is in an energy depleted state that is configured to transmit a backscatter signal in response to receipt of the query power signal. The wireless power transmitter is configured to detect the backscatter signal from the wireless power receiver, determine from the backscatter signal if a wireless power delivery requirement of the wireless power receiver is met, and deliver wireless power to the wireless power receiver if the wireless power delivery requirement is met.