利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

15 条记录 (耗时 0.021 秒)

    Battery System in Which Information Transmission Occurs via Insulating Circuits
    3.
    发明申请
    Battery System in Which Information Transmission Occurs via Insulating Circuits 审中-公开

    公开(公告)号：US20170214254A1

    公开(公告)日：2017-07-27

    申请号：US15483423

    申请日：2017-04-10

    申请人： Hitachi Ltd. ,  Hitachi Automotive Systems, Ltd.

    发明人： Kenji KUBO ,  Akihiko KUDO ,  Mutsumi KIKUCHI ,  Gosuke SHIBAHARA

    IPC分类号： H02J7/00

    摘要： A battery system includes a battery module that is constituted with a plurality of serially connected battery cells, a plurality of integrated circuits that group the battery cells so as to perform processing on battery cells in each group, a first transmission path through which a command signal is transmitted via a first insulating circuit from a higher-order control circuit that controls the integrated circuits to a highest-order integrated circuit of the integrated circuit, a second transmission path through which a data signal collected by the integrated circuits is transmitted from the highest-order integrated circuit to a lowest-order integrated circuit, and a third transmission path through which the data signal is transmitted from the lowest-order integrated circuit to the higher-order control circuit via a second insulating circuit.

    CONTROL DEVICE
    4.
    发明申请
    CONTROL DEVICE 有权

    公开(公告)号：US20210135578A1

    公开(公告)日：2021-05-06

    申请号：US16757201

    申请日：2018-10-04

    申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

    发明人： Shintaro TANAKA ,  Kenji KUBO ,  Takayuki OUCHI ,  Yuji SOBU ,  Naoya TAKAHASHI

    IPC分类号： H02M3/337 ,  B60L58/20 ,  H02M7/537 ,  H02M1/40 ,  H02M1/08

    摘要： A switching loss of a power conversion device is sufficiently reduced. A DC-DC converter includes a switching circuit that converts input first DC power into AC power, a transformer that performs voltage conversion of the AC power, and an output circuit that converts the AC power subjected to the voltage conversion by the transformer into second DC power. The control circuit that controls the DC-DC converter calculates a magnetic flux density value B of the transformer and controls a drive frequency of the switching circuit based on the calculated magnetic flux density value B.

    POWER SUPPLY DEVICE
    6.
    发明申请
    POWER SUPPLY DEVICE 审中-公开

    公开(公告)号：US20170358987A1

    公开(公告)日：2017-12-14

    申请号：US15538858

    申请日：2015-11-18

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Takayuki OOUCHI ,  Takae SHIMADA ,  Fumihiro SATO ,  Shintaro TANAKA ,  Kenji KUBO ,  Eigo KISHIMOTO

    IPC分类号： H02M3/335 ,  H02J7/00 ,  B60L11/18

    摘要： An object of the present invention is to provide a highly efficient power supply device.A power supply device 1 according to the present invention includes a bidirectional DC-DC converter 3 and an insulated DC-DC converter 4. The bidirectional DC-DC converter 3 receives a main battery 5 and outputs a direct-current link voltage Vlink. The insulated DC-DC converter 4 receives the link voltage Vlink and supplies power to a load 7. The link voltage Vlink, which is an output of the bidirectional DC-DC converter 3, changes according to the output voltage of the insulated DC-DC converter 4.

    Transformer and Power Converter Using the Same
    7.
    发明申请
    Transformer and Power Converter Using the Same 审中-公开
    变压器和电源转换器使用它

    公开(公告)号：US20160372250A1

    公开(公告)日：2016-12-22

    申请号：US15122294

    申请日：2015-01-14

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Tadahiko CHIDA ,  Mikito KOMATSU ,  Kenji KUBO

    IPC分类号： H01F27/22 ,  H02M3/335 ,  H01F27/02 ,  H01F27/29 ,  H01F27/32

    CPC分类号： H01F27/22 ,  H01F27/02 ,  H01F27/2866 ,  H01F27/2876 ,  H01F27/29 ,  H01F27/325 ,  H01F30/10 ,  H02M3/33576 ,  H02M3/337

    摘要： To suppress a temperature increase of a transformer. A transformer includes a core, a primary winding, and a secondary winding. The core includes a primary core and a secondary core disposed on a side of the primary core. The primary winding includes a first primary winding wound around the primary core and the second primary winding wound around the secondary core and electrically connected in series to the first primary winding. The first primary winding is disposed such that a direction of a magnetic flux on an inner peripheral side of the first primary winding induced by the first primary winding is opposite to a direction of the magnetic flux on the inner peripheral side of the second primary winding induced, by the second primary winding. The secondary winding is wound such that a winding axial line of the first primary winding and a winding axial line of the second primary winding are formed on an inner peripheral side of the secondary winding.

    摘要翻译： 抑制变压器的温度升高。 变压器包括芯，初级绕组和次级绕组。 芯部包括设置在主芯的一侧上的主芯和次芯。 初级绕组包括缠绕在主芯上的第一初级绕组和缠绕在次级芯上的第二初级绕组，并与第一初级绕组串联电连接。 第一初级绕组被布置成使得由第一初级绕组感应的第一初级绕组的内周侧的磁通方向与第二初级绕组的内周侧的磁通方向相反， ，通过第二次初级绕组。 卷绕次级绕组，使得第一初级绕组的绕组轴线和第二初级绕组的绕组轴线形成在次级绕组的内周侧。

    Power Conversion Device
    8.
    发明申请
    Power Conversion Device 有权

    公开(公告)号：US20210083588A1

    公开(公告)日：2021-03-18

    申请号：US16620000

    申请日：2018-04-11

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Sho YAEGAKI ,  Kenji KUBO ,  Takuma ONO ,  Yuki YAMABE

    IPC分类号： H02M3/335 ,  H02M1/088 ,  H02M1/32 ,  B60R16/02

    摘要： A power conversion device capable of suppressing current backflow while also improving current responsiveness and power conversion efficiency is achieved. A snubber capacitor capable of absorbing switching surge is connected to a low-voltage side switching circuit that includes switching elements. Until a predetermined time elapses from when a request to start switching is received, a controller determines that the snubber capacitor has not reached full charge or near-full charge, and asynchronously controls the low-voltage side switching circuit and a high-voltage side switching circuit that includes switching elements. After the predetermined time elapses, the controller synchronously controls the low-voltage side switching circuit and the high-voltage side switching circuit, and also controls a duty ratio of the low-voltage side switching circuit and the high-voltage side switching circuit such that current does not flow back from the low-voltage side switching circuit to the high-voltage side switching circuit.

    High-Voltage System and Failure Diagnosis Method for High-Voltage System
    9.
    发明申请
    High-Voltage System and Failure Diagnosis Method for High-Voltage System 审中-公开

    公开(公告)号：US20200300926A1

    公开(公告)日：2020-09-24

    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： G01R31/62 ,  H01F1/44 ,  H02M3/335 ,  F16F9/53 ,  F16F9/18 ,  B60G13/08

    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.

    Power Supply Device
    10.
    发明申请
    Power Supply Device 审中-公开
    电源设备

    公开(公告)号：US20150291041A1

    公开(公告)日：2015-10-15

    申请号：US14353696

    申请日：2012-10-31

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Katsuhiro HIGUCHI ,  Toshio HIRAISHI ,  Kenji KUBO

    IPC分类号： B60L11/18

    CPC分类号： B60L11/18 ,  B60L3/003 ,  B60L11/1868 ,  B60L2200/26 ,  B60L2210/10 ,  B60L2240/547 ,  B60L2240/549 ,  H02J7/1492 ,  H02M1/32 ,  H02M3/33584 ,  H02M7/003 ,  H02M2001/0058 ,  Y02T10/7005 ,  Y02T10/7066 ,  Y02T10/7216 ,  Y02T10/92

    摘要： A power supply device that converts inputted direct-current power to direct-current power with a predetermined voltage to supply the power to the outside includes a voltage conversion circuit that converts the voltage of the inputted direct-current power, a voltage measurement circuit that measures a voltage value indicating a voltage potential difference between a ground voltage potential in the power supply device and a ground point provided outside the power supply device and connected to the ground voltage potential via a ground strap cable, a current measurement circuit that measures a current value of a load current flowing when de direct-current power is supplied from the power supply device, and an arithmetic circuit that calculates a resistance value corresponding ground connection of the power supply device, based on the voltage value measured by the voltage measurement circuit and the current value measured by the current measurement circuit.

    摘要翻译： 将输入的直流电力转换成具有预定电压的直流电力以向外部供电的电源装置包括转换输入的直流电的电压的电压转换电路，测量输入的直流电的电压的电压测量电路 指示电源装置中的接地电压电位与设置在电源装置外部并经由接地带电缆连接到接地电压电位的接地点之间的电压电位差的电压值，测量电流值的电流测量电路 在从电源装置供给直流电力时流过的负载电流的运算电路，以及基于由电压测量电路和电压测量电路测量的电压值来计算电源装置的对应接地连接的电阻值的运算电路， 由当前测量电路测量的电流值。