US 12,103,405 B2
Power distribution apparatus for electric vehicle
Yoshinobu Yamazaki, Tokyo (JP); Masami Oguri, Tokyo (JP); Akihiro Nabeshima, Tokyo (JP); Yoshiyuki Jin, Tokyo (JP); Takeshi Yoneda, Tokyo (JP); Fumiya Sato, Tokyo (JP); Hiroshi Kusano, Tokyo (JP); Keigo Yamada, Tokyo (JP); Takumi Araki, Tokyo (JP); Shuntaro Miura, Tokyo (JP); and Susumu Ito, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Mar. 3, 2023, as Appl. No. 18/116,947.
Claims priority of application No. 2022-043462 (JP), filed on Mar. 18, 2022.
Prior Publication US 2023/0294525 A1, Sep. 21, 2023
Int. Cl. B60W 30/18 (2012.01); B60L 15/20 (2006.01); B60L 50/60 (2019.01)
CPC B60L 50/60 (2019.02) [B60L 15/2009 (2013.01); B60W 30/18127 (2013.01); B60L 2240/12 (2013.01); B60L 2240/423 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power distribution apparatus for an electric vehicle, the electric vehicle comprising front wheels, rear wheels, an electric motor configured to output power for traveling, and a mechanical brake configured to apply a braking force to at least the front wheels, the power distribution apparatus comprising:
a power distribution mechanism configured to distribute the power output from the electric motor to the front wheels and the rear wheels; and
a controller configured to control the power distribution mechanism, wherein
the power distribution mechanism comprises
a first clutch configured to fix a power distribution ratio during straight traveling of the electric vehicle to a first distribution ratio, and
a second clutch configured to fix the power distribution ratio during the straight traveling to a second distribution ratio,
the second distribution ratio is a distribution ratio at which first power distributed to the rear wheels is larger than second power distributed to the front wheels,
the first distribution ratio is closer to a distribution ratio at which the first power and the second power are equal as compared to the second distribution ratio, and
the controller is configured to set the second clutch to an engaged state and sets the first clutch to a half-engaged state during regenerative braking of the electric vehicle.