US 11,916,399 B2
Coil, wireless charging receiving apparatus, wireless charging transmission apparatus, and system
Changsheng Pei, Dongguan (CN); Yongfa Zhu, Dongguan (CN); Heqian Yang, Dongguan (CN); and Jinsen Cai, Dongguan (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on May 19, 2020, as Appl. No. 16/878,178.
Application 16/878,178 is a continuation of application No. PCT/CN2018/116329, filed on Nov. 20, 2018.
Claims priority of application No. 201711161042.3 (CN), filed on Nov. 20, 2017; and application No. 201711483128.8 (CN), filed on Dec. 29, 2017.
Prior Publication US 2020/0279686 A1, Sep. 3, 2020
Int. Cl. H02J 50/00 (2016.01); H01F 27/28 (2006.01); H02J 50/12 (2016.01); H01F 27/29 (2006.01); H01F 27/34 (2006.01); H01F 38/14 (2006.01); H02J 50/40 (2016.01); H02J 50/10 (2016.01); H02J 50/70 (2016.01)
CPC H02J 50/005 (2020.01) [H01F 27/2823 (2013.01); H01F 27/2871 (2013.01); H01F 27/292 (2013.01); H01F 27/346 (2013.01); H01F 38/14 (2013.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02); H02J 50/402 (2020.01); H02J 50/70 (2016.02); H01F 2027/348 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A coil, comprising:
an output terminal;
an input terminal; and
a wire-winding part that is connected between the output terminal and the input terminal,
wherein a slot is disposed on at least a part of the wire-winding part, the slot is disposed between outer edges of a width of the wire winding part at the at least a portion of the wire winding at which the slot is disposed, and a depth of the slot of the wire-winding part is less than or equal to the width of the wire-winding part, to reduce an eddy current loss caused in the coil by a magnetic field, wherein the slot comprises at least two portions, wherein a first portion of the slot cuts through the wire-winding part of the coil, and wherein a second portion of the slot has a preset depth disposed on the second portion of the wire-winding part of the coil, the preset depth less than a depth of the wire-winding part,
wherein the wire-winding part is a metal conductor made through spiral winding,
wherein the input terminal and the output terminal are configured to connect the wire-winding part to an external circuit.