公开(公告)号：US12212203B2

公开(公告)日：2025-01-28

申请号：US17790366

申请日：2020-12-11

Applicant: Hitachi Astemo, Ltd.

Inventor： Hiromitsu Okamoto ,  Yoshio Ozeki ,  Kenichi Nakayama ,  Satoshi Yamamura ,  Zhi Jing

IPC: H02K3/34 ,  H02K1/16 ,  H02K3/12 ,  H02K21/14

Abstract: Reliability of a rotating electrical machine is enhanced. A stator of a rotating electrical machine includes: a stator core being provided with teeth and slots on a cylindrical inner side surface of the stator core; a plurality of winding wires being each arranged inside each of the slots; and slot liners being each arranged respectively between an inner wall of each of the slots and each of the plurality of winding wires, each of the slot liners has a sheet-like first insulating substrate, a second insulating material layer being disposed on at least one surface of each of the slot liners, and an adhesive layer which expands between the first insulating substrate and the second insulating material layer by processing, the second insulating material layer is provided with a through-hole which communicates a side of the first insulating substrate with the inner wall of each of the slots, and each of the slot liners is disposed inside each of the slots in such a way that the second insulating material layer is provided on a side closer to the inner wall of each of the slots than the first insulating substrate.

公开(公告)号：US12301075B2

公开(公告)日：2025-05-13

申请号：US17777991

申请日：2020-11-04

Applicant: HITACHI ASTEMO, LTD.

Inventor： Kenichi Nakayama ,  Akira Toba ,  Hiromitsu Okamoto ,  Teruaki Higuchi ,  Zhi Jing ,  Satoshi Yamamura

IPC: H02K15/00 ,  H02K1/16 ,  H02K3/12 ,  H02K3/34 ,  H02K3/48 ,  H02K15/064

Abstract: The reliability of a rotating electrical machine is improved. A method for manufacturing a stator used in a rotating electrical machine includes: a first step of arranging a first segment coil and a second segment coil to face each other; a second step of processing the first segment coil to generate a bridge part that comes into contact with the second segment coil; and a third step of joining the bridge part and the second segment coil by laser welding.

公开(公告)号：US12218570B2

公开(公告)日：2025-02-04

申请号：US18009134

申请日：2021-02-05

Applicant: HITACHI ASTEMO, LTD.

Inventor： Zhi Jing ,  Satoshi Yamamura ,  Kenichi Nakayama ,  Tomohiro Adachi ,  Shinji Yamazaki ,  Hiromitsu Okamoto ,  Yuuki Takahashi

IPC: H02K5/20 ,  H02K1/16 ,  H02K9/19

Abstract: A rotating electric machine including a rotor, a stator, and a case forming outflow holes through which a refrigerant flows out toward an extra-slot conductor of a stator coil. The outflow holes are arranged above the extra-slot conductor, and when the bending direction of the extra-slot conductor with respect to an intra-slot conductor arranged on the outermost diameter side in a slot in the stator coil on an upper portion of the stator is a coil bending direction, the first outflow hole is arranged on the bending direction side with respect to a vertical line passing through the rotation center axis, and the second outflow hole is arranged on a side opposite to the bending direction with respect to the vertical line, and the arrangement angle of the second outflow hole with reference to the vertical line is larger than the arrangement angle of the first outflow hole with reference to the vertical line.