Passive high-voltage DC bus discharge circuit for a vehicle
    1.
    发明授权
    Passive high-voltage DC bus discharge circuit for a vehicle 有权
    用于车辆的被动高压直流母线放电电路

    公开(公告)号:US09018865B2

    公开(公告)日:2015-04-28

    申请号:US13460011

    申请日:2012-04-30

    摘要: A vehicle includes a rechargeable energy storage system (RESS), an electric traction motor, a traction power inverter module (TPIM), a high-voltage direct current (HVDC) bus that electrically connects the RESS to the TPIM, a passive discharge circuit connected across the positive and negative rails of the bus, and a microprocessor. The circuit includes a semiconductor switch. The microprocessor provides an output signal at a first voltage level that opens the switch and prevents discharge of the HVDC bus when the microprocessor is operating normally, and at a default second voltage level that closes the switch in the presence of a predetermined vehicle condition to thereby discharge the HVDC bus. An optocoupler may receive the output signal, and a zener diode may be in electrical parallel with an output side of the optocoupler. The switch may be an insulated gate bipolar transistor or a thyristor in different embodiments.

    摘要翻译: 车辆包括可再充电能量存储系统(RESS),电力牵引电动机,牵引电力逆变器模块(TPIM),将RESS与TPIM电连接的高压直流(HVDC)总线,被连接的无源放电电路 在总线的正负极和微处理器之间。 电路包括半导体开关。 微处理器提供一个第一电压电平的输出信号,该第一电压电平打开开关并防止当微处理器正常工作时HVDC总线的放电,以及在存在预定的车辆状况的情况下关闭开关的默认的第二电压电平 放电HVDC总线。 光耦合器可以接收输出信号,并且齐纳二极管可以与光耦合器的输出侧电并联。 在不同的实施例中,开关可以是绝缘栅双极晶体管或晶闸管。

    PASSIVE HIGH-VOLTAGE DC BUS DISCHARGE CIRCUIT FOR A VEHICLE
    2.
    发明申请
    PASSIVE HIGH-VOLTAGE DC BUS DISCHARGE CIRCUIT FOR A VEHICLE 有权
    被动式高压直流总线放电电路

    公开(公告)号:US20130285581A1

    公开(公告)日:2013-10-31

    申请号:US13460011

    申请日:2012-04-30

    IPC分类号: H02P1/00

    摘要: A vehicle includes a rechargeable energy storage system (RESS), an electric traction motor, a traction power inverter module (TPIM), a high-voltage direct current (HVDC) bus that electrically connects the RESS to the TPIM, a passive discharge circuit connected across the positive and negative rails of the bus, and a microprocessor. The circuit includes a semiconductor switch. The microprocessor provides an output signal at a first voltage level that opens the switch and prevents discharge of the HVDC bus when the microprocessor is operating normally, and at a default second voltage level that closes the switch in the presence of a predetermined vehicle condition to thereby discharge the HVDC bus. An optocoupler may receive the output signal, and a zener diode may be in electrical parallel with an output side of the optocoupler. The switch may be an insulated gate bipolar transistor or a thyristor in different embodiments.

    摘要翻译: 车辆包括可再充电能量存储系统(RESS),电力牵引电动机,牵引电力逆变器模块(TPIM),将RESS与TPIM电连接的高压直流(HVDC)总线,被连接的无源放电电路 在总线的正负极和微处理器之间。 电路包括半导体开关。 微处理器提供一个第一电压电平的输出信号,该第一电压电平打开开关并防止当微处理器正常工作时HVDC总线的放电,以及在存在预定的车辆状况的情况下关闭开关的默认的第二电压电平 放电HVDC总线。 光耦合器可以接收输出信号,并且齐纳二极管可以与光耦合器的输出侧电并联。 在不同的实施例中,开关可以是绝缘栅双极晶体管或晶闸管。