公开(公告)号：US11283331B2

公开(公告)日：2022-03-22

申请号：US16585017

申请日：2019-09-27

Applicant: DENSO CORPORATION

Inventor： Hiroshi Endo ,  Shohei Yoshioka

IPC: H02K9/19 ,  H02K9/28 ,  H02K1/2706 ,  H02K5/20

Abstract: A rotating electric machine includes a rotating shaft, a rotor fixed on the rotating shaft, a stator arranged to radially face the rotor, and a housing having a tubular part. The tubular part has the stator assembled thereto on a radially inner or radially outer side thereof. Moreover, the tubular part has an inner wall portion and an outer wall portion that are radially spaced from and radially face each other. Between the inner wall portion and the outer wall portion, there is formed an annular coolant passage through which coolant flows. On an external surface of the tubular part of the housing on an opposite radial side to the stator, at least one elongate protrusion is formed, in an axial range where the at least one elongate protrusion radially overlaps the coolant passage, to extend obliquely or parallel to an axial direction of the rotating shaft.

公开(公告)号：US12294262B2

公开(公告)日：2025-05-06

申请号：US17517312

申请日：2021-11-02

Applicant: DENSO CORPORATION

Inventor： Toshiaki Uga ,  Hiroshi Kaneiwa ,  Akihito Koike ,  Masayoshi Yamamoto ,  Kazuya Enokizono ,  Hiroshi Endo

IPC: H02K3/12 ,  H02K1/16 ,  H02K3/28

Abstract: In a rotating electric machine, an armature winding includes segmented conductors that include a coil side portion, housed in slots of the armature, and a coil end portion protruding from an armature core on both sides in an axial direction. The coil side portions are housed in the slots so as to form 2N+1 layers in a radial direction. The coil end portion connects two coil side portions respectively housed in the slots that are a predetermined pitch apart in a circumferential direction. The coil end portion includes a first coil end portion connecting the coil side portions of differing layers in the radial direction and a second coil end portion connecting the coil side portions of the same layer. On both ends in the axial direction, any of the plurality of coil side portions that are housed in the slots is connected to the second coil end portion.

公开(公告)号：US11777356B2

公开(公告)日：2023-10-03

申请号：US17347344

申请日：2021-06-14

Applicant: DENSO CORPORATION

Inventor： Masahito Fujieda ,  Kenichirou Takagi ,  Toshiaki Uga ,  Yoshihisa Shuji ,  Hiroshi Endo

IPC: H02K3/28 ,  H02K1/16 ,  H02K3/12 ,  H02K3/48

CPC classification number: H02K3/28 ,  H02K1/165 ,  H02K3/12 ,  H02K3/48 ,  H02K2213/03

Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core that has a plurality of slots that are arranged in a circumferential direction and a stator winding that has a plurality of phase coils that are wound in the slots. The rotor is arranged so as to oppose the stator in a radial direction and has a plurality of magnetic poles in the circumferential direction. In the rotating electric machine, each of the phase coils has a plurality of series-connection coil groups that each includes n unit coils that are arranged to be wound in the circumferential direction. In each of the series-connection coil groups, a first end thereof is connected to a phase terminal for a respective phase and a second end is connected to a neutral point, and the series-connection coil groups are connected in parallel.

公开(公告)号：US11594930B2

公开(公告)日：2023-02-28

申请号：US17235337

申请日：2021-04-20

Applicant: DENSO CORPORATION

Inventor： Hiroshi Endo ,  Akito Tamura

IPC: H02K3/28 ,  H02K21/14

Abstract: A rotating electric machine includes a multi-phase armature coil wound on an armature core. The armature coil is formed of electrical conductor groups each being a bundle of electrical conductor segments and having a pair of leg portions and a connecting portion that connects the leg portions. The connecting portion is bent radially with respect to a circumferential direction. The electrical conductor groups are paired such that each pair of the electrical conductor groups consists of a first electrical conductor group and a second electrical conductor group both belonging to a same phase of the armature coil. The circumferential pitch between the leg portions of the first electrical conductor group is greater than that between the leg portions of the second electrical conductor group. In each pair of the electrical conductor groups, the connecting portions of the first and second electrical conductor groups are arranged to axially overlap each other.

公开(公告)号：US11473669B2

公开(公告)日：2022-10-18

申请号：US16807402

申请日：2020-03-03

Applicant: DENSO CORPORATION

Inventor： Hiroshi Endo ,  Ryo Tanie

IPC: H02K9/19 ,  F16H57/04

Abstract: An electric drive apparatus includes a rotating electric machine and a transmission. The rotating electric machine includes a rotor, a stator and a first housing. The transmission includes a motive power transmitting unit, a second housing provided integrally with the first housing, and lubricating oil provided in the second housing to lubricate the motive power transmitting unit. The stator includes a stator coil that has first and second coil end parts respectively protruding from first and second axial end faces of a stator core. Each of phase windings of the stator coil has turn portions included in the first coil end part and joints included in the second coil end part. The second coil end part is located on the same axial side of the stator core as the transmission whereas the first coil end part is located on the opposite axial side of the stator core to the transmission.

公开(公告)号：US11920673B2

公开(公告)日：2024-03-05

申请号：US17950693

申请日：2022-09-22

Applicant: DENSO CORPORATION

Inventor： Hiroshi Endo ,  Ryo Tanie

IPC: H02K5/20 ,  F16H57/04 ,  H02K9/19

CPC classification number: F16H57/0476 ,  H02K5/203 ,  H02K9/19

Abstract: An electric drive apparatus includes a rotating electric machine and a transmission. The rotating electric machine includes a rotor, a stator and a first housing. The transmission includes a motive power transmitting unit, a second housing provided integrally with the first housing, and lubricating oil provided in the second housing to lubricate the motive power transmitting unit. The stator includes a stator coil that has first and second coil end parts respectively protruding from first and second axial end faces of a stator core. Each of phase windings of the stator coil has turn portions included in the first coil end part and joints included in the second coil end part. The second coil end part is located on the same axial side of the stator core as the transmission whereas the first coil end part is located on the opposite axial side of the stator core to the transmission.

公开(公告)号：US11539254B2

公开(公告)日：2022-12-27

申请号：US16807441

申请日：2020-03-03

Applicant: DENSO CORPORATION

Inventor： Ryo Tanie ,  Hiroshi Endo

IPC: H02K3/12 ,  H02K15/02 ,  H02K7/116 ,  H02K15/04 ,  H02K3/28 ,  H02K1/14 ,  H02K1/18

Abstract: An electric drive apparatus includes a rotating electric machine and a transmission. The transmission is provided, on one axial side of the rotating electric machine, integrally with the rotating electric machine. The rotating electric machine includes a stator coil that is assembled to a stator core to have first and second coil end parts respectively protruding from first and second axial end faces of the stator core. The axial protruding height of the second coil end part from the second axial end face of the stator core is larger than the axial protruding height of the first coil end part from the first axial end face of the stator core. The first coil end part is located on the same axial side of the stator core as the transmission whereas the second coil end part is located on the opposite axial side of the stator core to the transmission.