公开(公告)号：US20230006521A1

公开(公告)日：2023-01-05

申请号：US17772697

申请日：2021-01-28

Applicant: AISIN CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Hideharu USHIDA ,  Tetsuya MATSUBARA ,  Hiroyuki ONO ,  Toshiro NAKAMURA ,  Yasuhiro MAKIDO ,  Akihiro UEDA ,  Ken SHIRAI ,  Ryosuke MARUYAMA

IPC: H02K15/04 ,  H02K3/34 ,  H02K15/085 ,  H02K15/00 ,  H02K3/12

Abstract: A conductor wire insulating film separating method disclosed includes: a preparing step involving preparing rectangular cross-section coil pieces each of which is a conductor wire coated with insulating film and used to provide a stator coil of rotary electric machine; a delivering-in step involving, after the preparing step, delivering coil pieces into a laser separator, with coil pieces aligned such that extremities thereof are adjacent to each other; an applying step involving, after the delivering-in step, continuously applying film removing laser to the extremities of the aligned coil pieces such that the laser is applied to one extremity and then to another extremity, thus removing at least portions of the insulating film from the extremities of the coil pieces; and a delivering-out step involving delivering the coil pieces, from which the at least portions of the insulating film have been removed by the applying step, out of the laser separator.

公开(公告)号：US20240014717A1

公开(公告)日：2024-01-11

申请号：US18313371

申请日：2023-05-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi MATSUMOTO ,  Ken SHIRAI ,  Hazuki KAWAMURA ,  Kohei WATANABE

IPC: H02K15/00 ,  G01R31/34

CPC classification number: H02K15/0081 ,  G01R31/34

Abstract: A stator manufacturing method includes an inserting step of inserting lead-side segment coils covered with an insulating film and lead-opposite-side segment coils covered with an insulating film into a plurality of slots formed between a plurality of teeth radially protruding from an annular yoke, along the axial direction of the yoke, and electrically connecting the segment coils by using connecting members, in the inserting step, the plurality of segment coils are collectively inserted into the slots, and the method further includes an exposing step of forming the segment coils with exposed conductor portions by forming holes penetrating the insulating films in crossover parts of the segment coils while the segment coils are inserted in the slots.

公开(公告)号：US20180241225A1

公开(公告)日：2018-08-23

申请号：US15894411

申请日：2018-02-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ken SHIRAI

IPC: H02J7/00 ,  B60L11/18 ,  G01R31/36

Abstract: An electric power supply system includes a first battery provided in an electric power supply circuit; a second battery provided in the circuit and electrically connected in parallel to the first battery, the second battery being a lithium-ion battery; an electric load provided in the circuit and electrically connected in parallel to the first battery and the second battery; a switch provided in the circuit, and configured to electrically disconnect the second battery from the circuit when the switch is open; and a control device configured to open the switch when an ignition switch is on and an SOC of the first battery is equal to or higher than a prescribed SOC, and to execute an open-circuit voltage acquisition process that acquires an open-circuit voltage of the second battery after a lapse of a prescribed time from a time when the switch is opened.

公开(公告)号：US20250105712A1

公开(公告)日：2025-03-27

申请号：US18889568

申请日：2024-09-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi MATSUMOTO ,  Ken SHIRAI ,  Hazuki KAWAMURA

IPC: H02K15/06

Abstract: A method of manufacturing a coil includes: a first step of connecting a plurality of first coils to one end of respective a plurality of connecting members; and a second step of inserting the first coils, which are connected to the respective connecting members, and a plurality of second coils into slots of a stator core, so that the second coils are connected to the respective connecting members, which have already been connected to the first coils. Further, in the second step, in a case where insert directions of the two first coils adjacent to each other to be inserted into the slots are different from each other, a sum of insertion amounts of the two first coils adjacent to each other is less than a total length of each of the slots.

公开(公告)号：US20210083539A1

公开(公告)日：2021-03-18

申请号：US17019464

申请日：2020-09-14

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryosuke MARUYAMA ,  Hiroaki TAKEDA ,  Yasuhiro MAKIDO ,  Toshiro NAKAMURA ,  Ken SHIRAI

IPC: H02K3/12 ,  H02K1/16 ,  H02K3/28 ,  H02K3/34 ,  H02K15/00 ,  H02K15/04 ,  H02K15/085 ,  H02K15/10 ,  B21D28/28

Abstract: A stator has a stator core composed of teeth and slots. Segment coils are inserted into the corresponding slots. The segment coil projecting from the slot has an exposed conductor part and a covered conductor part covered with an electrical insulation film. The exposed conductor part is arranged at the distal end side from the covered conductor part of the segment coil. The segment coils are connected together through the exposed conductor parts thereof projecting from the slots. The exposed conductor part has a thickness T2 thinner than a thickness T1 of the covered conductor part. A step part is formed at a position of the stator core side, adjacent to the exposed conductor part of the segment coil. The step part and the covered conductor part are covered with the electrical insulation film continuously from the stator core side of the covered conductor part.

公开(公告)号：US20190280574A1

公开(公告)日：2019-09-12

申请号：US16286794

申请日：2019-02-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Ken SHIRAI ,  Akihiro UEDA ,  Yasuyuki HIRAO ,  Toshiro NAKAMURA ,  Hiroaki TAKEDA

IPC: H02K15/00 ,  B23K26/082 ,  H02G1/12

Abstract: An insulation film peeling method which radiates laser light onto a front end portion of an insulation film-coated conducting wire including a conducting wire and an insulation film in a longitudinal direction, and which peels a part of the insulation film up to a peeling boundary of a predetermined regulated peeling length, includes performing a rectilinear scan of a first region, in which a radiation position of the laser light moves from one side toward the other side and then moves from the other side toward the one side upon reaching the other side, and performing a unidirectional scan of a second region, in which the radiation of the laser light is performed from one side toward the other side and then the radiation position returns to the one side in a state in which the radiation of the laser light stops upon reaching the other side.