US 12,444,987 B2
Wireless power transmission apparatus
Takashi Yasuno, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 26, 2024, as Appl. No. 18/815,672.
Claims priority of application No. 2023-140231 (JP), filed on Aug. 30, 2023.
Prior Publication US 2025/0079906 A1, Mar. 6, 2025
Int. Cl. H02J 50/40 (2016.01); H02J 50/10 (2016.01); H01F 38/14 (2006.01)
CPC H02J 50/402 (2020.01) [H02J 50/10 (2016.02); H01F 38/14 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wireless power transmission apparatus comprising:
a first power transmission coil configured to transmit power to a power reception coil, and including a portion with a first conductor width and a portion with a second conductor width; and
a second power transmission coil configured to transmit power to the power reception coil, and including a portion with a third conductor width and a portion with a fourth conductor width,
wherein the first power transmission coil and the second power transmission coil are adjacent to each other at the portion with the second conductor width and the portion with the fourth conductor width with a predetermined separation distance,
wherein a sum of the second conductor width and the fourth conductor width is smaller than a sum of the first conductor width and the third conductor width, and
wherein the predetermined separation distance is smaller than or equal to a smaller one of the second conductor width and the fourth conductor width.