公开(公告)号：US20220139615A1

公开(公告)日：2022-05-05

申请号：US17176685

申请日：2021-02-16

Applicant: Google LLC

Inventor： Liyu Yang ,  Liang Jia ,  Srikanth Lakshmikanthan ,  Li Wang ,  Qi Tian ,  YungChih Chen ,  Veera Venkata Siva Nagesh Polu ,  Stefano Saggini ,  Mario Ursino ,  Ruben Specogna

IPC: H01F38/14 ,  H01F27/28 ,  H05K1/02

Abstract: This document describes techniques and apparatuses directed at reducing inductive-charging power loss. In aspects, a mobile device includes a multi-layer flexible printed circuit board (FPCB) coil that forms a receiver coil having a Litz-wire structure. The FPCB coil includes a multi-trace bundle, having traces systematically routed throughout the different layers of the FPCB coil to reduce eddy current losses.

公开(公告)号：US11417461B2

公开(公告)日：2022-08-16

申请号：US17176685

申请日：2021-02-16

Applicant: Google LLC

Inventor： Liyu Yang ,  Liang Jia ,  Srikanth Lakshmikanthan ,  Li Wang ,  Qi Tian ,  YungChih Chen ,  Veera Venkata Siva Nagesh Polu ,  Stefano Saggini ,  Mario Ursino ,  Ruben Specogna

IPC: H01F38/14 ,  H01F27/28 ,  H05K1/02 ,  H02J50/12 ,  H02J7/02

Abstract: This document describes techniques and apparatuses directed at reducing inductive-charging power loss. In aspects, a mobile device includes a multi-layer flexible printed circuit board (FPCB) coil that forms a receiver coil having a Litz-wire structure. The FPCB coil includes a multi-trace bundle, having traces systematically routed throughout the different layers of the FPCB coil to reduce eddy current losses.