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    • 91. 发明授权
    • Bus leakage resistance estimation for electric vehicle
    • 电动汽车的总线泄漏电阻估计
    • US09579977B2
    • 2017-02-28
    • US14607404
    • 2015-01-28
    • FORD GLOBAL TECHNOLOGIES, LLC
    • Allan R. GaleBenjamin A. Tabatowski-BushRichard W. Kautz
    • G01R31/02B60L3/00G01R27/02G01R31/00
    • B60L3/0069B60L3/04B60L3/12B60L2260/44G01R27/025G01R31/007G01R31/025
    • Electrical bus isolation is detected for an electrified vehicle having a DC power source connected to positive and negative buses. The positive bus is connected to chassis ground, and a resulting first current is sensed that flows through a negative bus leakage resistance and a balanced leakage resistance. The negative bus is connected to chassis ground, and a resulting second current is sensed that flows through a negative bus leakage resistance and a balanced leakage resistance. The positive and negative bus leakage resistances are estimated in response to respective ratios of the first and second currents. An isolation value is compared to a threshold, wherein the isolation value is responsive to a voltage of the DC power source and a smaller one of the positive and negative bus leakage resistances. An atypical isolation is signaled when the isolation value is less than the threshold.
    • 对于具有连接到正和负母线的直流电源的电气化车辆,检测到电气母线隔离。 正母线连接到机箱接地,并且感测到产生的第一电流流过负母线泄漏电阻和平衡漏电阻。 负母线连接到机箱接地,并且感测到产生的第二电流流过负母线泄漏电阻和平衡漏电阻。 响应于第一和第二电流的相应比率来估计正和负总线漏电阻。 将隔离值与阈值进行比较,其中隔离值响应于DC电源的电压和正负母线泄漏电阻中较小的一个。 当隔离值小于阈值时,发出非典型隔离信号。
    • 96. 发明申请
    • CONTACTOR COIL CURRENT REDUCTION DURING VEHICLE BATTERY CHARGING
    • 车辆电池充电期间的接触器线圈电流减少
    • US20150325396A1
    • 2015-11-12
    • US14275006
    • 2014-05-12
    • Ford Global Technologies, LLC
    • Michael Edward LoftusBenjamin A. Tabatowski-Bush
    • H01H47/04B60L11/18
    • B60L11/1838B60L3/0046B60L3/0069B60L11/18B60L11/1809B60L11/1816H01H47/04Y02T10/7005Y02T10/7072Y02T90/121Y02T90/128Y02T90/14Y02T90/163
    • Methods and systems are described to control the use of electrical power when charging a traction battery. A vehicle module can drive the contactor coils with two set-points for controlling the power into the contactor coils, namely, a travel or vehicle “on” set point and a charging, vehicle “off” set point. In use, full power is initially applied to the coils to guarantee immediate closure of the contactor. During charging and after closing the contactor, the power is set at the charging, vehicle “off” set point. The travel or vehicle “on” set point is higher than the charging, vehicle “off” set point. Using the charging, vehicle “off” set point reduces electricity consumption. The vehicle “on” set point is at a higher electrical level as it must maintain closure under worst-case vibration and shock conditions considering mounting location, contactor orientation, as well as other characteristics of the vehicle and contactor.
    • 描述了方法和系统,以在对牵引电池充电时控制电力的使用。 车辆模块可以用两个设定点驱动接触器线圈,以控制接触器线圈的功率,即行驶或车辆“开”设定点和充电车辆“关闭”设定点。 在使用中,最初将全功率施加到线圈,以确保接触器立即关闭。 在充电期间和关闭接触器之后,电源设置在充电,车辆“关闭”设定点。 行驶或车辆“开”设定点高于充电,车辆“关”设定点。 使用充电,车辆“关闭”设定点可降低用电量。 考虑到安装位置,接触器方向以及车辆和接触器的其他特性,车辆“开”设定点处于较高的电平,因为它必须在最坏的振动和冲击条件下保持关闭。