公开(公告)号：US20230146600A1

公开(公告)日：2023-05-11

申请号：US17883948

申请日：2022-08-09

申请人： Renesas Electronics America Inc.

发明人： Chan Young Jeong ,  Tao Qi ,  Young Chul Ryu ,  Kwangmuk Choi ,  Pooja Agrawal ,  Krishal Jaswantsinh Solanki ,  Adnan Dzebic

IPC分类号： H02J50/60 ,  H02J50/10

CPC分类号： H02J50/60 ,  H02J50/10

摘要： Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.

公开(公告)号：US12100972B2

公开(公告)日：2024-09-24

申请号：US17883948

申请日：2022-08-09

申请人： Renesas Electronics America Inc.

发明人： Chan Young Jeong ,  Tao Qi ,  Young Chul Ryu ,  Kwangmuk Choi ,  Pooja Agrawal ,  Krishal Jaswantsinh Solanki ,  Adnan Dzebic

IPC分类号： H02J50/60 ,  H02J50/10 ,  H02J50/80

CPC分类号： H02J50/60 ,  H02J50/10 ,  H02J50/80

摘要： Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.