Abstract: In order to improve cooling performance for lubricating oil without increasing the size of an oil pump or an oil cooler and achieve the improvement of the cooling performance with a highly durable configuration, a wheel driving device includes an electric motor provided in an electric motor case such that the lubricating oil retained in the electric motor case is made to circulate to lubricate and cool the electric motor and the electric motor is cooled by cooling water flowing in a cold water jacket provided in the electric motor case. The wheel driving device includes an oil passage in which the lubricating oil circulates. The oil passage is provided on an outer portion of the electric motor case along the cold water jacket.

Abstract: A rotary electric machine unit includes a rotary electric machine, a case accommodating the rotary electric machine, a power control unit configured to control the rotary electric machine and mounted on the case by directly connecting a unit-side connector provided on a bottom surface of the power control unit to a case-side connector provided on an upper surface of the case; and a sound absorbing member provided between the upper surface of the case and the bottom surface of the power control unit.

Abstract: A stator having a structure in which an insulating paper is easily inserted into a slot and a method for manufacturing the same are provided. The stator includes a stator core (21) alternately having teeth (32) and slots (34) in a circumferential direction, a coil (33) installed at the stator core (21), and an insulating paper (60) provided around the coil (33) while being accommodated in the slot (34) and having a folded portion (64) in a lengthwise direction of the slot (34).

Abstract: In order to improve cooling performance for lubricating oil without increasing the size of an oil pump or an oil cooler and achieve the improvement of the cooling performance with a highly durable configuration, a wheel driving device includes an electric motor provided in an electric motor case such that the lubricating oil retained in the electric motor case is made to circulate to lubricate and cool the electric motor and the electric motor is cooled by cooling water flowing in a cold water jacket provided in the electric motor case. The wheel driving device includes an oil passage in which the lubricating oil circulates. The oil passage is provided on an outer portion of the electric motor case along the cold water jacket.

Abstract: A rotary electric machine unit includes a rotary electric machine, a case accommodating the rotary electric machine, a power control unit configured to control the rotary electric machine and mounted on the case by directly connecting a unit-side connector provided on a bottom surface of the power control unit to a case-side connector provided on an upper surface of the case; and a sound absorbing member provided between the upper surface of the case and the bottom surface of the power control unit.

Abstract: A second core block is stacked on a first filler-vestige-accommodating steel sheet along a rotational axis and has a plurality of second magnet insertion holes. Each of the plurality of second magnet insertion holes is defined by a second inner wall. Each of a plurality of second permanent magnets is inserted into each of the plurality of second magnet insertion holes. Each of second spaces is provided between each of the plurality of second permanent magnets and the second inner wall. The filler fills the second spaces. The plurality of second magnet insertion holes have a plurality of second filler injection portions, respectively, via which the filler is injected into the plurality of second magnet insertion holes. The first filler-vestige-accommodating steel sheet has a plurality of first hole portions opposite to the plurality of second filler injection portions, respectively.

Abstract: A stator having a structure in which an insulating paper is easily inserted into a slot and a method for manufacturing the same are provided. The stator includes a stator core (21) alternately having teeth (32) and slots (34) in a circumferential direction, a coil (33) installed at the stator core (21), and an insulating paper (60) provided around the coil (33) while being accommodated in the slot (34) and having a folded portion (64) in a lengthwise direction of the slot (34).

Abstract: A second core block is stacked on a first filler-vestige-accommodating steel sheet along a rotational axis and has a plurality of second magnet insertion holes. Each of the plurality of second magnet insertion holes is defined by a second inner wall. Each of a plurality of second permanent magnets is inserted into each of the plurality of second magnet insertion holes. Each of second spaces is provided between each of the plurality of second permanent magnets and the second inner wall. The filler fills the second spaces. The plurality of second magnet insertion holes have a plurality of second filler injection portions, respectively, via which the filler is injected into the plurality of second magnet insertion holes. The first filler-vestige-accommodating steel sheet has a plurality of first hole portions opposite to the plurality of second filler injection portions, respectively.