公开(公告)号：US20230307995A1

公开(公告)日：2023-09-28

申请号：US18041791

申请日：2021-05-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Masao FUJIMOTO ,  Yuuichi YANAGISAWA ,  Akira ISHII

IPC: H02K11/27 ,  H05K5/00 ,  B62D5/04

CPC classification number: H02K11/27 ,  H05K5/0026 ,  B62D5/0403 ,  B62D5/046 ,  H02K2211/03

Abstract: A fuse circuit element (32) of a fuse module 22 for fail-safe is mounted on a fuse circuit board (31), and connected to wire terminal portions (36) made of respective wire one ends of stator coils. The fuse circuit board (31) has, as main terminals (33), through holes (33a) and land portions (33b), and the wire terminal portions (36) are soldered or welded with the wire terminal portions (36) inserted into the through holes (33a). The fuse circuit board (31) is supported in a cantilever manner by a pedestal portion (52) , and a space (53) is secured between the fuse circuit board (31) and a surface (51) of a housing (7) around the main terminals (33). With this, soldering or welding can be performed without heat escaping during soldering or welding by the space (53).

公开(公告)号：US20230271645A1

公开(公告)日：2023-08-31

申请号：US18007461

申请日：2021-05-19

Applicant: HITACHI ASTEMO, LTD.

Inventor： Akira ISHII ,  Keiji HAMADA ,  Narutoshi YAMADA

IPC: B62D5/04

CPC classification number: B62D5/0463 ,  B62D5/0421 ,  B62D5/0484

Abstract: A motor drive device includes a first drive system in which a first power supply circuit and a first central processing unit are arranged in order in a first direction, and a second drive system in which a second power supply circuit and a second central processing unit are arranged in order in a second direction. The first direction and the second direction are opposite to each other. Calling a straight line passing between the first power supply circuit and the first central processing unit, perpendicular to the first direction, a first virtual line and calling a straight line passing between the second power supply circuit and the second central processing unit, perpendicular to the second direction, a second virtual line, the first central processing unit and the second central processing unit are disposed within an area sandwiched by the first virtual line and the second virtual line.

公开(公告)号：US20230299647A1

公开(公告)日：2023-09-21

申请号：US18041776

申请日：2021-05-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Masao FUJIMOTO ,  Yuuichi YANAGISAWA ,  Akira ISHII

IPC: H02K11/33 ,  H02K11/25

CPC classification number: H02K11/33 ,  H02K11/25

Abstract: A stator (1B) has stator coils (U1, V1 and W1) of a first system and stator coils (U2, V2 and W2) of a second system, and the coils are supplied with power from inverter modules (21). A fuse module (22) has two fuse circuit elements (32) corresponding to respective systems. Phase lines of U, V and W of each fuse circuit element (32) are connected together at a neutral point (40), and a fuse (38) is interposed between the neutral point (40) and each coil. By supplying power to a heater (39) accommodated in the fuse circuit element (32) from a control terminal (34), the fuse (38) is blown out.

公开(公告)号：US20240074034A1

公开(公告)日：2024-02-29

申请号：US18261250

申请日：2021-11-29

Applicant: HITACHI ASTEMO, LTD.

Inventor： Akira ISHII ,  Tomio SAKASHITA

IPC: H05K1/02 ,  H05K1/14

CPC classification number: H05K1/0218 ,  H05K1/14 ,  H05K2201/09345

Abstract: An electronic control device includes a plurality of circuit boards that transmit signals to each other and a power supply connector for direct-current power. A ground line connected to a ground terminal of the power supply connector is connected to a ground of one of the plurality of circuit boards by way of a ground of another one of the plurality of circuit boards. In this way, the electronic control device including the plurality of circuit boards needs fewer noise reduction components while enabling easier routing of ground lines.

公开(公告)号：US20230011559A1

公开(公告)日：2023-01-12

申请号：US17783211

申请日：2020-12-07

Applicant: HITACHI ASTEMO, LTD.

Inventor： Narutoshi YAMADA ,  Takuro KANAZAWA ,  Kazuhiko NAKANO ,  Akira ISHII

IPC: H02K9/22 ,  H02K5/04 ,  H02K11/30 ,  B62D5/04

Abstract: Provided are an electronic drive device and an electronic steering device, in each of which: a mounting substrate has one surface as a first surface on which a first heat generating component is mounted and the other surface as a second surface on which a second heat generating component is mounted; a first heat dissipation member is arranged in contact with the second surface at a position corresponding to a mounted position of the first heat generating component such that heat generated by the first heat generating component is dissipated to a motor housing; and a second heat dissipation member is arranged in contact with the first surface at a position corresponding to a mounted position of the second heat generating component such that heat generated by the second heat generating component is dissipated to a cover.

公开(公告)号：US20240389228A1

公开(公告)日：2024-11-21

申请号：US18691436

申请日：2022-11-30

Applicant: HITACHI ASTEMO, LTD.

Inventor： Akira ISHII ,  Tomio SAKASHITA

IPC: H05K1/11 ,  H05K1/18

Abstract: An electronic control device includes: a circuit board including first and second surfaces structured to be loaded with electronic components; a first capacitor mounted to the first surface of the circuit board; and a second capacitor mounted to the second surface of the circuit board and disposed oppositely to the first capacitor at least partially. The circuit board further includes: a first land disposed in the first surface of the circuit board and connected to the first capacitor; a second land disposed in the second surface of the circuit board and connected to the second capacitor; and a conduction passage establishing electrical continuity from the first land and the second land to a same power source line via the circuit board.