公开(公告)号：US20240162842A1

公开(公告)日：2024-05-16

申请号：US18504272

申请日：2023-11-08

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Masashi KUBOTA ,  Takuya NARUSE ,  Takashi KAWASHIMA

IPC: H02P21/18

CPC classification number: H02P21/18

Abstract: An electric motor includes processing circuitry estimates a position of a rotor in a mode selected from an induced voltage mode and a harmonic superimposition mode. The processing circuitry estimates the position of the rotor using the induced voltage mode when the input voltage is less than or equal to a predetermined voltage threshold value or when the phase current is greater than or equal to a predetermined current threshold value and estimates the position of the rotor using the harmonic superimposition mode when the input voltage is greater than the voltage threshold value and the phase current is less than the current threshold value.

公开(公告)号：US20240145152A1

公开(公告)日：2024-05-02

申请号：US18383139

申请日：2023-10-24

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Shun ITO ,  Kazuhiro SHIRAISHI ,  Yoshiki NAGATA ,  Takashi KAWASHIMA ,  HIROSHI FUKASAKU ,  Shunsuke AMBO

IPC: H01F17/06 ,  H01F27/29 ,  H02M1/12

CPC classification number: H01F17/062 ,  H01F27/292 ,  H02M1/123

Abstract: A motor-driven compressor includes an inverter device. The inverter device includes a common mode choke coil. The common mode choke coil includes an annular core, two windings wound around the core, and an annular conductor that covers the two windings. The conductor is divided into a first metal plate and a second metal plate, which are combined to form an annular shape such that induced current flows in a circumferential direction of the conductor so as to hinder changes in leakage magnetic flux from the core. The second metal plate is thermally connected to the housing. The first metal plate is thermally connected to the second metal plate. At least one of an electrical resistance value or a thermal resistance value in a current path of the induced current is lower in the second metal plate than in the first metal plate.

公开(公告)号：US20210301803A1

公开(公告)日：2021-09-30

申请号：US17209958

申请日：2021-03-23

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Shunsuke AMBO ,  Yoshiki NAGATA ,  Takashi KAWASHIMA ,  Hiroshi FUKASAKU ,  Kaida JUNYA ,  Takeshi HARASAWA ,  Kenji HAYAKAWA ,  Takuya SAGAWA ,  Fumihiro KAGAWA ,  Mikio YOSHIDA ,  Kouki YAMAMOTO

IPC: F04B35/04 ,  H02K11/33

Abstract: A vehicle electric compressor includes a compression part, an electric motor, and an inverter device. The inverter device includes a noise reduction unit that includes a common mode choke coil. The common mode choke coil includes a core, a first winding wire, a second winding wire, and an electrical conductor that covers the core. The electrical conductor has a first insulation layer and a second insulation layer. The first insulation layer, the electrical conductor, and the second insulation layer form a laminated body including a loop-shaped portion that covers the core and a joint portion.

公开(公告)号：US20210162871A1

公开(公告)日：2021-06-03

申请号：US17101098

申请日：2020-11-23

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Takashi KAWASHIMA ,  Kazuki NAJIMA ,  Tomohiro TAKAMI ,  Yoshiki NAGATA

IPC: B60L15/20 ,  B60L53/20 ,  H02P23/20

Abstract: An inverter controller includes a processing circuitry. The processing circuitry is configured to obtain a command rotation speed transmitted repeatedly from outside of the inverter controller, count a command obtaining interval that is a period from a point in time where an old command rotation speed was obtained to a point in time where a new command rotation speed is obtained, set a target acceleration of the electric motor when the command rotation speed has been obtained, and control the inverter circuit such that the electric motor rotates at the set target acceleration. The processing circuitry is configured to calculate a command acceleration based on the counted command obtaining interval and the new command rotation speed, the command acceleration being set as the target acceleration.

公开(公告)号：US20210090776A1

公开(公告)日：2021-03-25

申请号：US17017938

申请日：2020-09-11

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Hiroshi FUKASAKU ,  Yoshiki NAGATA ,  Junya KAIDA ,  Shunsuke AMBO ,  Takashi KAWASHIMA

IPC: H01F17/04 ,  H02P27/08 ,  H01F27/28 ,  H01F41/066 ,  B60R16/03 ,  F04D25/06

Abstract: An in-vehicle motor-driven compressor includes a common mode choke coil. The common mode choke coil includes an annular core having a through-hole, a first winding and a second winding wound around the core, and a coated conductive wire. The second winding is opposed to the first winding while being spaced apart from the first winding. The coated conductive wire is wound around the core so as to surround the first winding, the second winding, and the core. The coated conductive wire has sections that are opposed to each other with the through-hole in between. An electric wire of the coated conductive wire is wound multiple turns around the core so as to at least partly overlap with the first and second windings. Both ends of the electric wire are electrically connected to each other. The core includes an exposed section that is not covered with the coated conductive wire.

公开(公告)号：US20180102723A1

公开(公告)日：2018-04-12

申请号：US15724530

申请日：2017-10-04

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Takashi KAWASHIMA ,  Tomohiro TAKAMI ,  Kazuki NAJIMA ,  Yoshiki NAGATA

IPC: H02P27/08 ,  H02P21/22 ,  B60L11/18 ,  H02M7/5395 ,  H02M1/08

CPC classification number: H02P27/08 ,  B60L50/51 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2220/16 ,  H02M1/08 ,  H02M7/5395 ,  H02M2001/0054 ,  H02P21/18 ,  H02P21/22 ,  H02P27/085 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7241 ,  Y02T10/92

Abstract: An in-vehicle inverter driving device is used to perform PWM control of an inverter circuit that drives an electric motor. The electric motor includes a rotor having a permanent magnet and a stator about which three-phase coils are wound. The in-vehicle inverter driving device includes a bootstrap circuit, which uses a capacitor to turn ON upper arm switching elements of the inverter circuit. The in-vehicle inverter driving circuit includes a PWM control section that controls the inverter circuit by a lower-arm-fixing two-phase modulation method. The PWM control section performs shift correction and dead-time correction in the lower-arm-fixing two-phase modulation method.

公开(公告)号：US20170058899A1

公开(公告)日：2017-03-02

申请号：US15247109

申请日：2016-08-25

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Akimitsu ICHIHARA ,  Shinichi KAWAMURA ,  Takashi KAWASHIMA

IPC: F04C28/06 ,  B60H1/00 ,  F04C29/00 ,  F04C18/02 ,  F04C28/28

CPC classification number: F04C28/06 ,  B60H1/00428 ,  B60H1/00735 ,  F04C18/0215 ,  F04C28/08 ,  F04C28/28 ,  F04C29/0092 ,  F04C2210/26 ,  F04C2240/40 ,  F04C2240/403 ,  F04C2270/72

Abstract: A motor-driven compressor includes a three-phase motor including a rotor, a housing, a compression unit, a drive circuit, and a controller. The drive circuit includes u-phase upper and lower arm switching elements, v-phase upper and lower arm switching elements, and w-phase upper and lower arm switching elements. The controller performs a deceleration control in response to the rotor being rotating in a direction opposite to the forward direction. The controller controls the drive circuit in a switching control mode that includes a first mode, in which one or more switching elements of the upper and lower arm switching elements of the three phases are activated while the remaining switching elements are deactivated, and a second mode, which differs from the first mode in a combination of the activated and deactivated switching elements.

Abstract translation: 电动压缩机包括三相电动机，其包括转子，壳体，压缩单元，驱动电路和控制器。 驱动电路包括u相上下臂开关元件，v相上下臂开关元件和w相上下臂开关元件。 控制器响应于转子沿与正向相反的方向旋转而进行减速控制。 控制器以包括第一模式的开关控制模式控制驱动电路，其中三相的上下臂开关元件中的一个或多个开关元件在其余开关元件被去激活时被激活，第二模式 ，其与启动和停用的开关元件的组合中的第一模式不同。

公开(公告)号：US20170058898A1

公开(公告)日：2017-03-02

申请号：US15247074

申请日：2016-08-25

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Shinichi KAWAMURA ,  Takashi KAWASHIMA

IPC: F04C28/06 ,  B60H1/00 ,  F04C29/00 ,  F04C18/02 ,  F04C28/28

CPC classification number: F04C28/06 ,  B60H1/00428 ,  B60H1/00735 ,  B60H1/00907 ,  B60H2001/00935 ,  B60H2001/3292 ,  F04C18/0215 ,  F04C28/08 ,  F04C28/28 ,  F04C29/0085 ,  F04C29/0092 ,  F04C2210/26 ,  F04C2240/40 ,  F04C2240/403 ,  F04C2270/72

Abstract: A motor-driven compressor includes an electric motor including a rotor, a housing, a compression unit, a drive circuit, and a controller. The controller includes a deceleration controller that performs a deceleration control, which decelerates the rotor, during a first period in response to the rotor being rotating in a direction opposite to the forward direction, and a continuation controller that performs a continuation control, which continues the rotation of the rotor, during a second period that is longer than the first period after the deceleration control is performed. A fluctuation difference of a rotational frequency of the rotor during the continuation control is less than a deceleration rotational frequency difference.

Abstract translation: 电动压缩机包括电动机，其包括转子，壳体，压缩单元，驱动电路和控制器。 该控制器包括减速控制器，该减速控制器响应于转子沿与正向相反的方向旋转而在第一时段期间执行减速控制，该减速控制减速;以及继续控制器，其执行继续控制， 在比执行减速控制之后的第一周期长的第二时段期间转子旋转。 继续控制期间转子的旋转频率的波动差小于减速旋转频率差。

公开(公告)号：US20160245288A1

公开(公告)日：2016-08-25

申请号：US15047068

申请日：2016-02-18

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Junya YANO ,  Tsuyoshi YAMAGUCHI ,  Takashi KAWASHIMA ,  Yoshiki NAGATA

IPC: F04C28/06 ,  F04B39/12 ,  F04B49/02 ,  F04C29/00 ,  F04B53/14 ,  F04C18/02 ,  F04C18/34 ,  F04C28/28 ,  F04B35/04 ,  F04B49/06

CPC classification number: F04C28/06 ,  F04B35/04 ,  F04B49/06 ,  F04B49/10 ,  F04B2203/0205 ,  F04C18/0215 ,  F04C18/34 ,  F04C28/28 ,  F04C29/0085 ,  F04C2240/808 ,  F04C2240/81 ,  F04C2270/195 ,  F04C2270/80 ,  F04C2270/86

Abstract: A motor-driven compressor includes an electric motor, a drive circuit, a modulation method controller, a temperature measuring section, a high-temperature (HT) stop controller, and a high-temperature (HT) stop temperature setting section. The high-temperature (HT) stop controller stops the electric motor when the temperature measured by the temperature measuring section is higher than or equal to a predetermined high-temperature (HT) stop temperature. When the modulation method is the three-phase modulation, the HT stop temperature setting section sets the HT stop temperature to a three-phase high-temperature (HT) stop temperature. When the modulation method is the two-phase modulation, the HT stop temperature setting section sets the HT stop temperature to a two-phase high-temperature (HT) stop temperature, which is higher than the three-phase HT stop temperature.

Abstract translation: 电动压缩机包括电动机，驱动电路，调制方法控制器，温度测量部，高温（HT）停止控制器和高温（HT）停止温度设定部。 当由温度测量部测量的温度高于或等于预定的高温（HT）停止温度时，高温（HT）停止控制器停止电动机。 当调制方式为三相调制时，HT停止温度设定部将HT停止温度设定为三相高温（HT）停止温度。 当调制方式为两相调制时，HT停止温度设定部将HT停止温度设定为高于三相HT停止温度的两相高温（HT）停止温度。

公开(公告)号：US20160036359A1

公开(公告)日：2016-02-04

申请号：US14812714

申请日：2015-07-29

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Yoshiki NAGATA ,  Takashi KAWASHIMA

IPC: H02P6/14 ,  H02P29/00

CPC classification number: H02P6/157 ,  H02P29/032 ,  H02P29/62 ,  H02P29/68

Abstract: An inverter apparatus includes an inverter circuit, a capacitor, and a control unit. In the first control mode, the control unit shifts a phase of at least one of PWM signals of three phases such that a time period during which polarities of output voltages of three phases are the same is shorter in the first control mode than the time period in the second control mode; and controls the inverter circuit so as to supply a direct current to the three-phase AC motor as a d-axis current by outputting the PWM signals of three phases, each having a phase after the phase shift processing. In the second control mode, the control unit controls the inverter circuit so as to supply an alternating current to the three-phase AC motor by outputting the PWM signals of three phases, each having a phase before the phase shift processing.

Abstract translation: 逆变器装置包括逆变器电路，电容器和控制单元。 在第一控制模式中，控制单元将三相PWM信号中的至少一个的相位移位，使得三相输出电压的极性相同的时间段在第一控制模式中比时间段短 在第二控制模式; 并且通过输出在相移处理之后具有相位的三相的PWM信号来控制逆变器电路，以将直流作为d轴电流提供给三相AC电动机。 在第二控制模式中，控制单元通过输出在相移处理之前具有相位的三相的PWM信号，来控制逆变器电路，以向三相交流电动机提供交流电。