US 12,126,186 B2
Wireless power transfer system
Norihito Kimura, Hekinan (JP); Makoto Hashimoto, Seto (JP); Tomokiyo Suzuki, Shizuoka-ken (JP); Kazutaka Kimura, Mishima (JP); and Masaki Kanesaki, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Apr. 26, 2023, as Appl. No. 18/307,020.
Claims priority of application No. 2022-075158 (JP), filed on Apr. 28, 2022.
Prior Publication US 2023/0352978 A1, Nov. 2, 2023
Int. Cl. H02J 50/12 (2016.01); H02J 50/70 (2016.01)
CPC H02J 50/12 (2016.02) [H02J 50/70 (2016.02)] 3 Claims
OG exemplary drawing
 
1. A wireless power transfer system that wirelessly transfers power from a power transmitter coil to a power receiver coil,
wherein the power transmitter coil and the power receiver coil each include a coil unit, the coil unit being a pair of coils arranged side by side in a horizontal direction, and a core unit, the core unit being a pair of cores each configured to induce a magnetic field generated by each of the coils in the coil unit,
wherein each of the coils in the coil unit has a shape formed by being wound in a horizontal plane and the coils are configured in such a way that magnetic fields generated by currents are oriented oppositely to each other,
wherein each of the cores in the core unit is integrated with each coil in the coil unit and the cores are arranged spaced apart from each other, and
wherein each of the cores in the core unit is provided with a core slot that divides the core at a position where the core slot configures the core to be substantially axisymmetric about a centerline that is at the same distance from each of the coils of the pair of coils as an axis of symmetry.