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1. 发明授权

US11630164B2 High-voltage system and failure diagnosis method for high-voltage system 有权
公开(公告)号：US11630164B2
公开(公告)日：2023-04-18
申请号：US16756014
申请日：2018-10-03
申请人： Hitachi Automotive Systems, Ltd.
发明人： Daisuke Ikarashi , Kenji Kubo , Michihiro Asanuma
IPC分类号： B60G13/08 , G01R31/62 , F16F9/18 , F16F9/53 , H01F1/44 , H02M3/335
摘要： Provided are a reliable high-voltage system and a failure diagnosis method thereof, in which a vibration damping mechanism using an electrorheological fluid as a working fluid is a load, and can prevent electric shock due to leakage current and the influence on surrounding electronic devices. There are provided a first circuit that includes a power source and a ground, a second circuit that is magnetically coupled to the first circuit via a transformer and includes a load connected to the ground, a controller that is connected to the ground, a third circuit that is connected to the second circuit and the ground, a first resistor that is provided between a connection point at a high potential end of the second circuit and the ground, and a second resistor that is provided between a connection point at a low potential end of the second circuit and the ground, and has a resistance value different from a resistance value of the first resistor.

2. 发明授权

US11629678B2 Fuel injection valve and method for assembling same 有权
公开(公告)号：US11629678B2
公开(公告)日：2023-04-18
申请号：US16971081
申请日：2019-01-24
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Akiyasu Miyamoto , Masashi Sugaya , Yasuo Namaizawa , Takuya Watai
IPC分类号： F02M61/16 , F02M61/10 , F02M51/06 , F02M61/18
摘要： Provided is a fuel injection valve capable of stroking a valve body in two stages of large and small strokes and improving responsiveness of a valve opening operation. Therefore, a first mover 201 is attracted to a magnetic core 107. A second mover 202 is formed separately from the first mover 201, and is attracted to the magnetic core 107 on an inner diameter side of the first mover 201. A valve body 101 has a flange portion 101a on an upstream side of the second mover 202. A spacer 213 forms a gap (void g1) in an axial direction between the flange portion 101a and the second mover 202 in a valve closed state.

3. 发明授权

US11626766B2 Power connection with overmolded axially adjusted connecting rings 有权
公开(公告)号：US11626766B2
公开(公告)日：2023-04-11
申请号：US16881142
申请日：2020-05-22
申请人： Hitachi Automotive Systems, Ltd.
发明人： Joseph William Galloway , Shinji Yamazaki
IPC分类号： H02K3/52 , H02K1/14 , H02K3/28 , H02K15/00 , H02K15/10 , H02K5/22
摘要： In some examples, a connecting ring may connect to a stator coil. The connecting ring may include at least one linear conductor integrally formed in a ring-like shape. Further, the connecting ring may include a terminal section integrally formed in the linear conductor, the terminal section including a hole configured to receive a wire end of the stator coil inserted into the hole in an insertion direction. In addition, the connecting ring may include a cylindrical protrusion having an opening in communication with the hole. The cylindrical protrusion may protrude away from the hole in the insertion direction. Additionally, the connecting ring may include bends for raising a first portion of the connecting ring including the terminal section in the insertion direction relative to a second portion of the connecting ring. An insulating member may cover the second portion of the connecting ring.

4. 发明授权

US11604483B2 Current generator circuit and diagnostic circuit 有权
公开(公告)号：US11604483B2
公开(公告)日：2023-03-14
申请号：US16636953
申请日：2018-07-17
申请人： Hitachi Automotive Systems, Ltd.
发明人： Keishi Komoriyama , Minoru Migita , Yoichiro Kobayashi
IPC分类号： G01R31/28 , G05F3/26 , G05F1/10 , G01R19/00 , H01F7/06 , H03K5/24
摘要： The present invention maintains the accuracy of a reference current used in a functional circuit. Disclosed is a current generator circuit including a functional circuit and a diagnostic circuit. The functional circuit uses a reference current. The diagnostic circuit diagnoses the reference current in accordance with a comparison result obtained from comparison between the period of a periodic signal generated based on the reference current and the period of a reference clock inputted from the outside.

5. 发明授权

US11584428B2 Steering device 有权
公开(公告)号：US11584428B2
公开(公告)日：2023-02-21
申请号：US16554447
申请日：2019-08-28
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Atsushi Hirata , Kazuya Yamano , Tatsuro Suzuki , Masaki Kashima
IPC分类号： H02P9/10 , H02P9/06 , B62D5/04 , B62D5/00
摘要： A steering device includes: an offset correction value storing section to store an offset correction value including a first offset correction value and a second offset correction value, the first offset value being a current value for correcting the first sensed current signal so that a value of a vibration of the electric motor is equal to or smaller than a first predetermined value when the motor rotation speed signal is a first rotation speed, and the second offset value being a current value for correcting the first sensed current signal so that the value of the vibration of the electric motor is equal to or smaller than a second predetermined value when the motor rotation speed signal is a second rotation speed.

6. 发明授权

US11578719B2 Pulsation phenomenon suppression mechanism of pump device 有权
公开(公告)号：US11578719B2
公开(公告)日：2023-02-14
申请号：US16646303
申请日：2018-08-22
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Yukichi Sunaga
IPC分类号： F04C2/344 , F04C14/22 , F04C15/06 , F01C21/10 , F04C29/06 , F04C15/00
摘要： A first communication groove (38) extending from a start point of a discharge port (36) in a direction opposite to rotation direction of vanes (22) is formed. A first end portion (38E) of this groove is connected to the start point of the discharge port (36). When a front-side vane in a rotation direction of a driving shaft (11) is positioned at the start point of the discharge port (36), a second end portion (38S) of the groove is positioned at a rear side in the rotation direction with respect to a rear-side vane coming immediately after the front-side vane, and communicates with a suction port (35). A part of working fluid in a front-side pump chamber (27-1) can therefore be introduced into a rear-side pump chamber (27-2) that communicates with the suction port (35), thereby lessening excessive pressure increase of the front-side pump chamber (27-1) and suppressing pulsation phenomenon.

7. 发明授权

US11577774B2 Electric drive device and electric power steering device 有权
公开(公告)号：US11577774B2
公开(公告)日：2023-02-14
申请号：US16344672
申请日：2017-07-31
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Keiji Hamada
IPC分类号： H02K11/33 , B62D5/04 , H02K11/24 , H02K5/04 , H05K7/20 , H02K9/02 , H02K9/22
摘要： In an electric power steering device, a motor housing includes an end face part opposite to an output part of a rotating shaft of an electric motor. A power conversion circuit part includes a power conversion switching circuit part, and a second part exclusive of the power conversion switching circuit part. The power conversion switching circuit part includes an upper arm switching element and a lower arm switching element packaged by synthetic resin, and is mounted on a power conversion switching circuit board that is mounted to a power conversion switching circuit part heat dissipation section of the end face part for heat dissipation. A power supply circuit part and the second part of the power conversion circuit part are mounted on a power supply circuit board that is mounted to a power supply circuit part heat dissipation section of the end face part for heat dissipation.

8. 发明授权

US11560926B2 Power transmission shaft 有权
公开(公告)号：US11560926B2
公开(公告)日：2023-01-24
申请号：US16638049
申请日：2018-08-28
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Xiaojin Zhu , Yasutomo Mabe , Kenichiro Ishikura
IPC分类号： F16D1/116 , F16D3/224 , F16D1/10 , F16D3/223
摘要： A power transmission shaft includes: a bearing including a cylindrical portion, an internal spline portion, and an internal spline side annular groove including a bottom surface, and a first side wall and a second side wall, the first side wall which includes a first inclination surface inclined with respect to the rotation axis of the shaft portion, and on which the circlip is abutted in a state where a radius of the circlip is decreased within the internal spline side annular groove, and the second side wall on which the circlip is abutted in the state where the radius of the circlip is decreased within the internal spline side annular groove.

9. 发明授权

US11535152B2 Parking support device 有权
公开(公告)号：US11535152B2
公开(公告)日：2022-12-27
申请号：US16641726
申请日：2018-08-01
申请人： Hitachi Automotive Systems, Ltd.
发明人： Satoru Okubo , Koji Takahashi
IPC分类号： B60R1/00 , G01C21/34 , G08G1/14
摘要： In a tilt parking mode, “a target parking position” can be accurately determined without changing a camera tilt angle and an HMI display range, and can be notified to a driver, so that the usability can be improved. A parking support device includes an external field recognition unit such as a camera and a sonar, which recognizes an external field, an information holding unit which holds information of a parking frame line recognized by the external field recognition unit, a parking region extraction unit which extracts a parking region from information of the parking frame line, a parking position determination unit which determines a target parking position from the parking region, and a path calculation unit which calculates a parking path from a current position of an own vehicle up to the target parking position. In a case where part of the parking frame line is not recognized by the camera, the target parking position is defined on the basis of lines connecting an end point of the parking frame line on a rear side of the own vehicle, a virtually extending line of the parking frame line on a front side of the own vehicle, and a point intersecting with the virtual line on a front side of the vehicle from the end point of the parking frame line on the rear side of the own vehicle.

10. 发明授权

US11523493B2 Electronic control unit 有权
公开(公告)号：US11523493B2
公开(公告)日：2022-12-06
申请号：US17268849
申请日：2019-06-27
申请人： Hitachi Automotive Systems, Ltd.
发明人： Miki Hiraoka , Ryosuke Ishida , Yoshio Kawai
IPC分类号： H05K1/18 , H05K1/02
摘要： An electronic control unit includes: a wiring substrate having a first surface on which a conductor wire is formed; a first electronic component that is implemented on the first surface of the wiring substrate, and has a large heat generation amount; a second electronic component that is implemented on the first surface of the wiring substrate, and has a heat generation amount smaller than the first electronic component; and a resin that covers the first electronic component, the second electronic component, and the first surface of the wiring substrate, and a second surface of the wiring substrate that is opposite to the first surface. A distance between an outer surface of the resin immediately below the first electronic component, and the second surface of the wiring substrate is longer than a distance between an outer surface of the resin immediately above the second electronic component, and the first surface of the wiring substrate.

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