公开(公告)号：US20160299186A1

公开(公告)日：2016-10-13

申请号：US14681197

申请日：2015-04-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue Fan ,  Salah Chamlal ,  Shital Patel ,  Rashed S. Rabaa ,  Andrew C. Baughman

IPC: G01R31/07

CPC classification number: G01R31/07

Abstract: A fuse system includes a fuse element configured to receive a current. A controller is operatively connected to the fuse element and has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a remaining fuse life (LR) of the fuse element. Execution of the instructions by the processor causes the controller to determine a temperature (T) of the fuse element. The fuse system may be part of a vehicle. The controller may be configured to determine if the remaining fuse life is below first and second thresholds. If the remaining fuse life is above the second threshold, a first message may be displayed to a vehicle display. If the remaining fuse life is below the second threshold, the vehicle may be shifted to a predefined alternative operating mode.

Abstract translation: 保险丝系统包括被配置为接收电流的熔丝元件。 控制器可操作地连接到熔丝元件并且具有处理器和有形的非暂时性存储器，其上记录有用于执行用于确定熔丝元件的剩余熔丝寿命（LR）的方法的指令。 由处理器执行指令使得控制器确定熔丝元件的温度（T）。 保险丝系统可以是车辆的一部分。 控制器可以被配置为确定剩余熔丝寿命是否低于第一阈值和第二阈值。 如果剩余的保险丝寿命高于第二阈值，则可以向车辆显示器显示第一消息。 如果剩余的保险丝寿命低于第二阈值，则车辆可以移动到预定的替代操作模式。

公开(公告)号：US20150377975A1

公开(公告)日：2015-12-31

申请号：US14317771

申请日：2014-06-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Voytek A. Novak ,  Vivekananda Shripathy ,  Daniel P. Grenn ,  Andrew C. Baughman

IPC: G01R31/36

CPC classification number: G01R31/3658 ,  G01R35/00 ,  H01M10/42 ,  H01M10/4257 ,  H01M10/482 ,  H01M2010/4278 ,  H02J7/0021 ,  H02J7/0026 ,  H02J7/0029

Abstract: A method of identifying a non-communicative battery Cell Sensing Board (CSB) within a plurality of battery CSBs arranged in a serial chain includes sequentially reconfiguring the serial chain of the battery CSBs to sequentially define each of the plurality of battery CSBs as a last battery CSB in a temporary test serial chain. Communication with the last battery CSB of each temporary test serial chain is sequentially established with a loopback feature of the battery CSBs. When a disruption in communication between the battery system manager controller and the last battery CSB of the current temporary test serial chain is detected, the last battery CSB of the current temporary test serial chain is identified as the non-communicative battery CSB.

Abstract translation: 识别布置在串行链路中的多个电池CSB内的非交流电池电池感测板（CSB）的方法包括：依次重新配置电池CSB的串联链，以顺序地将多个电池CSB中的每一个作为最后一个电池 CSB在临时测试串行链中。 与每个临时测试串行链的最后一个电池CSB的通信依次建立与电池CSB的环回功能。 当检测到电池系统管理器控制器与当前临时测试串行链的最后一个电池CSB之间的通信中断时，将当前临时测试串行链的最后一个电池CSB识别为非交流电池CSB。

公开(公告)号：US20140266221A1

公开(公告)日：2014-09-18

申请号：US13803683

申请日：2013-03-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Baughman ,  James C. Gibbs

IPC: G01R31/36

CPC classification number: G01R31/362 ,  H01M10/48 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A method for estimating the voltage of a battery element of a vehicle battery system is provided. The method comprises providing a balancing/sensing circuit having a series combination of a balancing switch and a balancing resistive element electrically connected in parallel with the battery element, and measuring the voltage across the combination of the balancing switch and balancing resistive element when the balancing switch is presumed to be in a “closed” state. The method further comprises deriving a compensated value for the measured voltage using empirically-derived data, wherein the compensated value compensates for a voltage drop occurring in the balancing/sensing circuit when the balancing switch is in the “closed” state and represents an estimate of the voltage of the battery element. A battery system is also provided that includes a battery element, a balancing/sensing circuit, a sensor, and a control module configured to perform the method described above.

Abstract translation: 提供了一种用于估计车载电池系统的电池元件的电压的方法。 该方法包括提供平衡/感测电路，其具有与电池元件并联电连接的平衡开关和平衡电阻元件的串联组合，并且当平衡开关和平衡电阻元件的平衡开关 被认定处于“封闭”状态。 该方法还包括使用经验导出的数据导出测量电压的补偿值，其中当平衡开关处于“关闭”状态时，补偿值补偿在平衡/感测电路中发生的电压降，并且代表 电池元件的电压。 还提供一种电池系统，其包括电池元件，平衡/感测电路，传感器和被配置为执行上述方法的控制模块。

公开(公告)号：US20220352737A1

公开(公告)日：2022-11-03

申请号：US17244038

申请日：2021-04-29

Applicant: GM Global Technology Operations LLC

Inventor： Yue-Yun Wang ,  Andrew C. Baughman

IPC: H02J7/00 ,  H01M10/48 ,  H01M10/44

Abstract: A vehicle, system and method for monitoring an occurrence of thermal runaway in a battery pack of the vehicle. The system includes a plurality of voltage sensors and a processor. The plurality of voltage sensors obtains a plurality of voltage measurements at each of a plurality of battery cells of the battery pack. The processor is configured to determine a mean value based on the plurality of voltage measurements, compare a voltage measurement obtained from a selected battery cell to the mean value, and generate a notification signal when a difference between the voltage measurement from the selected battery cell and the mean value is greater than or equal to a prognostic threshold.

公开(公告)号：US10816606B2

公开(公告)日：2020-10-27

申请号：US16239188

申请日：2019-01-03

Applicant: GM Global Technology Operations LLC

Inventor： Yue Fan ,  Russell K. Steele ,  Andrew C. Baughman ,  Peter Kung Chiang

IPC: G01R31/389 ,  B60L58/12 ,  G01R31/00 ,  G01R31/367 ,  B60L58/14 ,  H02J7/00 ,  H02P27/06

Abstract: An electrical system includes a voltage bus, voltage sensor(s) measuring a first voltage between a positive bus rail and electrical ground, and a second voltage between a negative bus rail and electrical ground, a bias resistor, and a controller. When the switch is closed, the controller measures four or more discrete voltage samples of the first and second voltages. The samples are grouped into first and second sample groups each having three discrete voltage samples, with the second and third voltage samples of the first group being the first and second samples of the second group. The controller estimates a steady-state voltage of the first and second voltages using the sample groups, prior to the first and second voltages converging on actual steady-state voltage values. The controller executes a corresponding control action when the steady-state voltage estimate is stable or unstable relative to a defined stability threshold.

公开(公告)号：US10333182B2

公开(公告)日：2019-06-25

申请号：US15219463

申请日：2016-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James C. Gibbs ,  Todd W. Bazzett ,  Andrew C. Baughman ,  Todd F. Mackintosh

IPC: H01M10/48 ,  H01M10/46 ,  H01M10/42 ,  H01M10/0525 ,  B60L11/18 ,  G01R31/36 ,  B60L53/24 ,  B60L58/12 ,  B60L58/22 ,  G01R31/396

Abstract: A method and system are disclosed for estimating cell voltage excursion in a battery pack in the presence of a sensing fault in which actual cell voltages of first and second battery cells in a block of battery cells become unknown or missing. The sensing fault is detected, and a cell voltage is determined for each cell in the block other than the first and second cells. The method also includes measuring a block voltage, calculating an average cell voltage in the block, and estimating that the first cell is equal to the calculated average cell voltage. All excursion or deviation of the measured block voltage from a sum of the cell voltages and the estimated cell voltage of the first cell is assigned to the second cell. A control action is executed using the estimated cell voltages, including selectively enabling or disabling functionality of the battery pack.

公开(公告)号：US09428073B2

公开(公告)日：2016-08-30

申请号：US14186750

申请日：2014-02-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Baughman ,  Daniel P. Grenn ,  Andrew M. Zettel

IPC: H02J7/00 ,  B60L3/04 ,  B60L11/00 ,  B60L15/20 ,  G01N27/416 ,  G07C5/00 ,  B60L11/18 ,  B60L3/12 ,  G07C5/08 ,  B60L3/00 ,  G08B21/00

CPC classification number: B60L11/1861 ,  B60L3/0046 ,  B60L3/04 ,  B60L3/12 ,  B60L11/1864 ,  B60L15/20 ,  B60L2210/10 ,  B60L2240/12 ,  B60L2240/423 ,  B60L2240/443 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2260/26 ,  G01N27/416 ,  G07C5/0808 ,  G07C5/0841 ,  G08B21/00 ,  H02J7/00 ,  Y02T10/645 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7055 ,  Y02T10/7061 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7275 ,  Y02T10/7283

Abstract: A method of monitoring a performance level of a battery of a vehicle having an electronic control unit (ECU) includes enabling a charging diagnostic module (CDM) and determining, with the CDM, a charging status of the battery. The method also includes enabling a discharging diagnostic module (DDM) and determining, with the DDM, a discharging status of the battery. The charging status and the discharging status are recorded in a memory location of the ECU.

Abstract translation: 一种监视具有电子控制单元（ECU）的车辆的电池的性能水平的方法包括使能充电诊断模块（CDM），并且利用CDM确定电池的充电状态。 该方法还包括启用放电诊断模块（DDM）并且使用DDM确定电池的放电状态。 充电状态和放电状态记录在ECU的存储位置。

公开(公告)号：US09267996B2

公开(公告)日：2016-02-23

申请号：US13804151

申请日：2013-03-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Baughman

IPC: G01N27/416 ,  G01R31/36 ,  H02J7/00 ,  H01M10/42

CPC classification number: G01R31/362 ,  G01R31/3651 ,  H01M10/425 ,  H01M2010/4271 ,  H02J7/00 ,  H02J7/0021 ,  Y02T10/7055

Abstract: A method for estimating the voltage of a battery element of a battery system is provided. In one embodiment, the method comprises providing a balancing/sensing circuit having a series combination of a balancing switch and a balancing resistive element electrically connected in parallel with the battery element, and measuring the voltage across the balancing switch/balancing resistive element combination when the switch is presumed to be in a “closed” state.” The method further comprises deriving a compensated value for the measured voltage by applying a calculated compensation factor to the measured voltage, the compensated value compensating for a voltage drop occurring in the balancing/sensing circuit when the balancing switch is in the “closed” state and represents an estimate of the battery element voltage. A battery system is also provided that includes a battery element, a balancing/sensing circuit, a sensor, and a control module configured to perform the method described above.

Abstract translation: 提供了一种用于估计电池系统的电池元件的电压的方法。 在一个实施例中，该方法包括提供平衡/感测电路，其具有与电池元件并联电连接的平衡开关和平衡电阻元件的串联组合，并且当平衡开关/平衡电阻元件组合 开关被认为处于“关闭”状态。“该方法还包括通过将计算出的补偿因子应用于所测量的电压来导出测量电压的补偿值，该补偿值补偿在平衡/感测中发生的电压降 当平衡开关处于“关闭”状态并且表示电池元件电压的估计时。 还提供一种电池系统，其包括电池元件，平衡/感测电路，传感器和被配置为执行上述方法的控制模块。

公开(公告)号：US20160025815A1

公开(公告)日：2016-01-28

申请号：US14339003

申请日：2014-07-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Baughman

IPC: G01R31/36

CPC classification number: G01R31/3658 ,  G01R31/026

Abstract: A system and method are disclosed for diagnosing an open circuit of a cell voltage sensing board. The board includes, for each cell, a line balancing resistor, a line sense resistor, and a gate. Each gate connects and disconnects a given line balancing resistor to and from a corresponding cell. A cell voltage is measured for a selected battery cell, and a controller determines if the selected battery cell is an uppermost or lowermost cell in the battery stack. A line sense resistance value is calculated for the selected battery cell using a first set of equations when the selected battery cell is the uppermost cell, a second set of equations when the selected battery cell is the lowermost cell, and a third set of equations when the selected battery cell is neither. A control action is executed when the calculated line sense resistance exceeds a calibrated resistance threshold.

Abstract translation: 公开了用于诊断电池电压检测板的开路的系统和方法。 对于每个单元，该板包括线路平衡电阻器，线路检测电阻器和栅极。 每个门连接和断开给定的线路平衡电阻器和相应的单元。 对于所选择的电池单元测量电池电压，并且控制器确定所选择的电池单元是否是电池组中的最上面或最下面的单元。 当所选择的电池单元是最上面的单元时，使用第一组方程计算所选择的电池单元的线路感测电阻值，当所选择的电池单元是最下面的单元时，计算第二组方程，以及第三组方程 所选择的电池单元都不是。 当计算出的线路感测电阻超过校准电阻阈值时，执行控制动作。

公开(公告)号：US20250149661A1

公开(公告)日：2025-05-08

申请号：US18500366

申请日：2023-11-02

Applicant: GM Global Technology Operations LLC

Inventor： Andrew C. Baughman ,  Shubham Gupta ,  Rajeev M. Ramanan ,  Xiumei Guo

IPC: H01M10/42

Abstract: A power distribution system includes a battery having multiple power cell groups. Each power cell group includes at least two power cells and a state of charge monitoring sensor. A controller is connected to each state of charge monitoring sensor. The controller is configured to run a process causing the processor to detect a slow self-discharge in at least one power cell group by monitoring a cell balancing metric for each power cell group and generating a set of accumulated balance metric values. The set of accumulated balancing metric values includes an accumulated balancing metric value corresponding to each power cell group in the plurality of power cell groups. The process identifies a reference value and a difference between the reference value and the cell balancing metric of each power cell with a cell balancing metric lower than the reference value and comparing the difference to a threshold.