US 12,155,277 B2
Driving unit and vehicle
Heisuke Kobayashi, Saitama (JP); Takeshi Hoshinoya, Saitama (JP); Keiichiro Kashiwabara, Saitama (JP); Norifumi Yasuda, Saitama (JP); Manabu Yazaki, Saitama (JP); Tomoyuki Suzuki, Saitama (JP); Akira Fujiwara, Ibaraki (JP); Hideaki Noto, Ibaraki (JP); Shunsuke Isogai, Ibaraki (JP); and Yu Asakura, Ibaraki (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP); and HITACHI ASTEMO, LTD., Ibaraki (JP)
Appl. No. 17/624,130
Filed by HONDA MOTOR CO., LTD., Tokyo (JP); and HITACHI ASTEMO, LTD., Ibaraki (JP)
PCT Filed Jun. 29, 2020, PCT No. PCT/JP2020/025544
§ 371(c)(1), (2) Date Dec. 30, 2021,
PCT Pub. No. WO2021/002330, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 2019-123964 (JP), filed on Jul. 2, 2019.
Prior Publication US 2022/0263389 A1, Aug. 18, 2022
Int. Cl. H02K 5/20 (2006.01); H02K 5/22 (2006.01); H02K 9/19 (2006.01); H02K 11/33 (2016.01)
CPC H02K 11/33 (2016.01) [H02K 5/203 (2021.01); H02K 5/225 (2013.01); H02K 9/19 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A driving unit comprising:
a rotary electric machine which has a rotation axis extending in a horizontal direction;
a rotary electric machine case which has a rotary electric machine accommodating portion accommodating the rotary electric machine; and
an electric power conversion device which is electrically connected to the rotary electric machine and converts electric power supplied to the rotary electric machine and electric power supplied from the rotary electric machine, wherein:
the electric power conversion device is disposed on one side of the rotary electric machine in an orthogonal direction orthogonal to both a rotation axis direction and an up-down direction;
a first coolant is stored in the rotary electric machine accommodating portion of the rotary electric machine case;
a coolant introduction pipe introducing a second coolant into the driving unit and a coolant discharge pipe discharging the second coolant from the driving unit are connected to the driving unit;
a first connecting portion electrically connecting the rotary electric machine and the electric power conversion device is disposed below the rotation axis on a first end portion side in the rotation axis direction, at least a part of the first connecting portion being immersed in the first coolant,
a coolant introduction pipe connecting portion where the coolant introduction pipe is connected and a coolant discharge pipe connecting portion where the coolant discharge pipe is connected are disposed below the rotation axis on a second end portion side in the rotation axis direction; and
the first connecting portion, the coolant introduction pipe connecting portion, and the coolant discharge pipe connecting portion are disposed between the rotary electric machine and the electric power conversion device in the orthogonal direction when viewed from the rotation axis direction.