US 11,850,953 B2
Vehicle drive unit
Takayuki Sato, Aki-gun (JP); and Masashi Hayashiguchi, Kyoto (JP)
Assigned to MAZDA MOTOR CORPORATION, Hiroshima (JP); and ROHM CO., LTD, Kyoto (JP)
Filed by Mazda Motor Corporation, Hiroshima (JP); and Rohm Co., Ltd., Kyoto (JP)
Filed on Oct. 20, 2022, as Appl. No. 17/970,507.
Claims priority of application No. 2021-178193 (JP), filed on Oct. 29, 2021.
Prior Publication US 2023/0135655 A1, May 4, 2023
Int. Cl. B60L 7/14 (2006.01); B60L 50/51 (2019.01); H02K 3/28 (2006.01); H02M 7/00 (2006.01); H02M 7/537 (2006.01)
CPC B60L 50/51 (2019.02) [H02K 3/28 (2013.01); H02M 7/003 (2013.01); H02M 7/537 (2013.01); B60L 2210/40 (2013.01); B60L 2220/50 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle drive unit including a motor and an inverter disposed adjacent to each other in an axial direction of the motor, the inverter having a plurality of power modules,
wherein each power module is placed on a placement surface orthogonal to the axial direction,
wherein in the motor, at least a first coil group and a second coil group are provided, each including one U-phase coil, one V-phase coil, and one W-phase coil,
wherein the plurality of power modules constitute at least a first power module group and a second power module group that are connected in parallel,
wherein the first power module group and the second power module group each include one U-phase power module, one V-phase power module, and one W-phase power module corresponding to the U-phase coil, the V-phase coil, and the W-phase coil, respectively, of the first coil group or the second coil group,
wherein each power module of the first power module group is connected to a corresponding one of the coils of the first coil group,
wherein each power module of the second power module group is connected to a corresponding one of the coils of the second coil group, and
wherein when seen in the axial direction, a distance between the U-phase power module of the first power module group and the U-phase coil of the first coil group, a distance between the V-phase power module of the first power module group and the V-phase coil of the first coil group, and a distance between the W-phase power module of the first power module group and the W-phase coil of the first coil group are equal to each other.