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    • 3. 发明申请
    • POWER CONVERTER AND VEHICLE EQUIPPED WITH POWER CONVERTER
    • 功率转换器和车载电源转换器
    • WO2005057770A1
    • 2005-06-23
    • PCT/IB2004/003920
    • 2004-11-30
    • TOYOTA JIDOSHA KABUSHIKI KAISHANAKAYAMA, Hiroshi
    • NAKAYAMA, Hiroshi
    • H02M7/00
    • H02M7/00B60K6/26B60K6/48B60L3/00B60L3/0069B60W10/08H02M1/32Y02T10/6221
    • A power source (120) supplies an input voltage (V 1). A voltage conversion circuit (130) converts the input voltage (V1) from the power source (120) into an operating voltage (V2) to be used to drive an electric load (150). A detection circuit (170) measures an insulation resistance value (R) on the output side of the voltage conversion circuit (130). A control circuit (160) controls a voltage conversion ratio (K (K=V2/V1)) in the voltage conversion circuit (130), which is expressed as a ratio of the operating voltage (V2) to the input voltage (V1), in accordance with the insulation resistance value (R) detected by the detection circuit (170). The control circuit (160) sets the voltage conversion ratio (K) such that the operating voltage (V2) becomes lower at the time of degradation of an insulation resistance than at the time of normal operation thereof.
    • 电源(120)提供输入电压(V 1)。 电压转换电路(130)将来自电源(120)的输入电压(V1)转换为用于驱动电力负载(150)的工作电压(V2)。 检测电路(170)测量电压转换电路(130)的输出侧的绝缘电阻值(R)。 控制电路(160)控制电压转换电路(130)中的电压转换比(K(K = V2 / V1)),其表示为工作电压(V2)与输入电压(V1)的比值 ,根据由检测电路(170)检测的绝缘电阻值(R)。 控制电路(160)设定电压转换比(K),使得在绝缘电阻劣化时的工作电压(V2)比正常工作时的工作电压(V2)低。