公开(公告)号：US20150333378A1

公开(公告)日：2015-11-19

申请号：US14278590

申请日：2014-05-15

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Xiaoguang CHANG ,  Xu WANG ,  Chuan HE

IPC: H01M10/42 ,  H01M10/48

CPC classification number: B60L3/0046 ,  B60L1/003 ,  B60L1/02 ,  B60L3/0069 ,  B60L11/123 ,  B60L11/14 ,  B60L11/1816 ,  B60L11/1864 ,  B60L11/1868 ,  B60L11/1877 ,  B60L2210/10 ,  B60L2210/40 ,  B60L2240/24 ,  B60L2240/34 ,  B60L2240/547 ,  B60L2240/549 ,  G01R27/025 ,  G01R31/006 ,  G01R31/025 ,  G01R31/36 ,  H01M10/4228 ,  H01M10/4285 ,  H01M10/48 ,  H01M2220/20 ,  Y02T10/6217 ,  Y02T10/7005 ,  Y02T10/7061 ,  Y02T10/7066 ,  Y02T10/7072 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T90/127 ,  Y02T90/14

Abstract: A leakage detection system for a battery pack of a vehicle may include detection circuitry having a first side connecting a positive terminal of the pack to ground and a second side connecting a negative terminal of the pack to ground, and including no more than one switch among the sides. The system may also include measurement circuitry configured to measure a voltage across a resistor of one of the sides when the switch is open and closed, and a controller programmed to output a leakage associated with the battery pack based on the voltage.

Abstract translation: 用于车辆的电池组的泄漏检测系统可以包括检测电路，其具有将该组件的正端子连接到地的第一侧和将该组件的负极端子接地的第二侧，并且包括不超过一个开关 两边。 该系统还可以包括测量电路，其被配置为当开关断开和闭合时测量跨越一侧的电阻器的电压，并且控制器被编程为基于电压输出与电池组相关的泄漏。

公开(公告)号：US20150285867A1

公开(公告)日：2015-10-08

申请号：US14247553

申请日：2014-04-08

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Xu WANG ,  Xiaoguang CHANG

IPC: G01R31/36

CPC classification number: G01R31/3648 ,  G01R31/367 ,  G01R31/382 ,  G01R31/389 ,  G01R35/00

Abstract: A hybrid or electric vehicle includes a traction battery. A battery measurement diagnostic system compares a measured voltage and an estimated voltage. The estimated voltage is based on impedance parameter estimates and an equivalent circuit model of a battery. When a magnitude of a difference between the measured and estimated voltages is greater than a threshold, the impedance parameter estimates are based on impedance parameter estimates from a previous time step. If the magnitude exceeds the threshold for a predetermined number of time steps, a voltage measurement diagnostic flag is output. The logic minimizes the impact of voltage measurement spikes on estimated quantities and may indicate the condition to an operator.

Abstract translation: 混合动力或电动车辆包括牵引电池。 电池测量诊断系统将测量的电压和估计的电压进行比较。 估计电压基于阻抗参数估计和电池的等效电路模型。 当测量电压和估计电压之间的差值的大小大于阈值时，阻抗参数估计基于来自前一时间步长的阻抗参数估计值。 如果在预定数量的时间步长中超过阈值，则输出电压测量诊断标志。 逻辑最小化电压测量尖峰对估计量的影响，并可能指示操作员的状况。