公开(公告)号：US20250038606A1

公开(公告)日：2025-01-30

申请号：US18846462

申请日：2022-04-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Keisuke TATENO

IPC: H02K3/50

Abstract: A stator in a rotary electric machine includes a cylindrical-shaped core having a plurality of slots, and coils disposed side by side in the slots, the coils having respective end portions connected to each other to constitute 2n sets of Y-connected wires (n is an integer of 1 or more) constituted by a group of phase windings having different electric phases. The stator further includes a wire connection portion connecting the coils to each other. The wire connection portion includes a first conductive plate member, a second conductive plate member, and a third conductive plate member for connecting the end portions of the coils of the same phase to each other, and a neutral-point connection plate member for connecting neutral points of the group of phase windings to each other. The neutral-point connection plate member connects a coil disposed in an inner layer in a radial direction of the core and a coil disposed in an outer layer in the radial direction of the core to each other, and the neutral-point connection plate member is divided into a plurality of sections in a circumferential direction of the core. In the wire connection portion, at least one of the first conductive plate member, the second conductive plate member, and the third conductive plate member and at least one of the sections of the divided neutral-point connection plate member are disposed at positions overlapping each other in an axial direction of the core.

公开(公告)号：US20230142308A1

公开(公告)日：2023-05-11

申请号：US17915363

申请日：2021-01-29

Applicant: Hitachi Astemo, Ltd.

Inventor： Keisuke TATENO ,  Yuichiro BABA ,  Yuki KONISHI

IPC: H02K11/25

CPC classification number: H02K11/25

Abstract: Adhesion between a temperature detection unit and a segment coil is improved to improve temperature following capability. A stator core, a stator winding wire configured with a plurality of connected segment coils attached to the stator core, and a temperature detection unit that is in contact with the segment coil to detect temperature are provided, and among the segment coils, a segment coil at which the temperature detection unit is disposed is disposed to protrude further than other segment coils disposed alongside.

公开(公告)号：US20250112514A1

公开(公告)日：2025-04-03

申请号：US18728801

申请日：2022-01-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Akihito TOYA ,  Akira TOBA ,  Keisuke TATENO

IPC: H02K3/28

Abstract: A rotary electric machine includes a stator core and a stator coil. The stator coil includes two linear portions and a turn portion that connects the two linear portions. The turn portion includes a top portion, an inclined portion that connects the top portion and the linear portion, and a bent portion that is bent outward in a radial direction. First and second stator coils have bent portions that are at different positions in a circumferential direction. The bent portion of the first stator coil is formed at the inclined portion of the first stator coil. The bent portion of the second stator coil is formed at the top portion of the second stator coil. The turn portion of the second stator coil is closer to the stator core than the turn portion of the first stator coil.

公开(公告)号：US20240120793A1

公开(公告)日：2024-04-11

申请号：US18264338

申请日：2021-08-31

Applicant: HITACHI ASTEMO, LTD.

Inventor： Miku TAKAHASHI ,  Yuji KOBAYASHI ,  Yasuyuki SAITO ,  Noriaki HINO ,  Shinji YAMAZAKI ,  Takuya MIYAGI ,  Keisuke TATENO

IPC: H02K3/28 ,  H02K21/14

CPC classification number: H02K3/28 ,  H02K21/14

Abstract: Provided are a stator for a rotary electric machine and the rotary electric machine. The stator includes a stator core, and a stator winding formed in a plurality of phases, the stator winding including a slot conductor and a crossover conductor configured to connect ends of a pair of the slot conductors, the ends placed at a same side of the pair of slot conductors. With the stator, the stator winding includes a plurality of phase winding groups configured to forma plurality of parallel circuits in each of the plurality of phases; the crossover conductor in each of the plurality of phase winding groups includes, at one of the coil ends, a first crossover conductor configured to connect the pair of slot conductors at Np=N1, and a second crossover conductor configured to connect the pair of slot conductors at Np=N1+Nspp, where Np represents a slot pitch, N1 represents a predetermined natural number, and Nspp represents a number of the plurality of slots per pole and phase; and the first crossover conductor and the second crossover conductor are alternately arranged in a circumferential direction of the stator core.