US 12,456,569 B2
Wireless charging apparatus and mobile means comprising same
Tae Kyoung Kim, Gyeonggi-do (KR); Jong Hak Choi, Gyeonggi-do (KR); Nah Young Kim, Gyeonggi-do (KR); and Seunghwan Lee, Gyeonggi-do (KR)
Assigned to SKC CO., LTD., Gyeonggi-do (KR)
Appl. No. 17/764,515
Filed by SKC CO., LTD., Gyeonggi-do (KR)
PCT Filed Oct. 30, 2020, PCT No. PCT/KR2020/015068
§ 371(c)(1), (2) Date Mar. 28, 2022,
PCT Pub. No. WO2021/086125, PCT Pub. Date May 6, 2021.
Claims priority of application No. 10-2019-0136472 (KR), filed on Oct. 30, 2019; application No. 10-2019-0149598 (KR), filed on Nov. 20, 2019; and application No. 10-2020-0051252 (KR), filed on Apr. 28, 2020.
Prior Publication US 2022/0351892 A1, Nov. 3, 2022
Int. Cl. H01F 27/28 (2006.01); H01F 27/08 (2006.01); H01F 27/255 (2006.01); H01F 27/36 (2006.01); H02J 50/10 (2016.01); B60L 53/12 (2019.01)
CPC H01F 27/255 (2013.01) [H01F 27/08 (2013.01); H01F 27/28 (2013.01); H01F 27/36 (2013.01); H02J 50/10 (2016.02); B60L 53/12 (2019.02)] 13 Claims
OG exemplary drawing
 
1. A wireless charging device, which comprises a coil unit; and a first magnetic unit disposed on the coil unit, wherein the first magnetic unit comprises an outer part corresponding to a part where the coil unit is disposed,; and a central part surrounded by the outer part, and the outer part has a thickness greater than the thickness of the central part, and
wherein the wireless charging device further comprises a second magnetic unit disposed on the first magnetic unit and having a magnetic permeability different from that of the first magnetic unit; and a third magnetic unit disposed on the second magnetic unit and having a magnetic permeability different from that of the second magnetic unit.