US 11,894,182 B2
Coil component and wireless power transmission device having the same
Shoma Kajikiya, Tokyo (JP); and Noritaka Chiyo, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on May 19, 2022, as Appl. No. 17/748,556.
Claims priority of application No. 2021-086648 (JP), filed on May 24, 2021.
Prior Publication US 2022/0375682 A1, Nov. 24, 2022
Int. Cl. H01F 5/04 (2006.01); H01F 27/28 (2006.01); H01F 38/14 (2006.01); H02J 50/10 (2016.01); H02J 50/80 (2016.01)
CPC H01F 38/14 (2013.01) [H01F 5/04 (2013.01); H01F 27/28 (2013.01); H02J 50/10 (2016.02); H02J 50/80 (2016.02)] 8 Claims
OG exemplary drawing
 
1. A coil component comprising:
a first coil;
a second coil disposed so as to surround the first coil; and
a substrate on which the first coil and the second coil are formed,
wherein the first coil includes a first section extending in a first direction, a second section extending in a second direction orthogonal to the first direction, and a third section positioned between the first and second sections,
wherein gaps between the first, second, and third sections of the first coil and the second coil as viewed in a coil axis direction have a first width, a second width, and a third width, respectively,
wherein the second width is larger than the first width and smaller than the third width,
wherein the second coil includes a first coil pattern provided on one surface of the substrate and a second coil pattern provided on other surface of the substrate, and
wherein the first coil pattern and the second coil pattern have a section overlapping each other in the coil axis direction and another section not overlapping each other in the coil axis direction.