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：US11728705B2

公开(公告)日：2023-08-15

申请号：US17347117

申请日：2021-06-14

Applicant: DENSO CORPORATION

Inventor： Toshiaki Uga ,  Yoshihisa Shuji ,  Masahito Fujieda ,  Hirotaka Kurozaki

IPC: H02K3/28 ,  H02K3/14 ,  H02K3/48

CPC classification number: H02K3/28 ,  H02K3/14 ,  H02K3/48 ,  H02K2213/03

Abstract: A rotating electrical machine is equipped with a stator including a stator winding and a stator core with slots. The stator winding includes phase coils each of which is wound in the slots and connected at an end to a phase terminal and at the other end to a neutral point. The phase coils are each made up of unit coils connected in series between a corresponding one of the phase terminals and the neutral point and connected together using connecting conductors. Each of the phase coils includes two or more reversing connecting conductors each of which orients a direction in which the connecting conductor extends from the (i+1)th unit coil to the (i+2)th unit coil to be opposite to that in which the connecting conductor extends from the ith unit coil to the (i+1)th unit coil. This coil layout ensures a desired degree of electrical insulation in the stator.