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公开(公告)号：US11830990B2
公开(公告)日：2023-11-28
申请号：US16773558
申请日：2020-01-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Fang Wang , Fiona E. Meyer-Teruel , Tao Wang , Thomas Timpf, Jr. , Andrew C. Baughman
IPC: H01M10/48 , H02J7/00 , G01K1/02 , G01K13/00 , B60L50/64 , B60L58/24 , H02P27/06 , H01M10/42 , B60K6/28 , B60K6/26
CPC classification number: H01M10/486 , B60L50/64 , B60L58/24 , G01K1/026 , G01K13/00 , H01M10/4257 , H02J7/0013 , H02J7/00032 , H02J7/0047 , H02P27/06 , B60K6/26 , B60K6/28 , B60Y2200/91 , B60Y2200/92 , H01M2010/4271 , H01M2010/4278 , H01M2220/20
Abstract: A battery system includes a rechargeable energy storage system (RESS) having battery cells, and a battery controller network configured to execute two-level logic to detect a thermal runaway condition. The network includes RESS-embedded cell monitoring units (CMUs) electrically connected to a respective cell group, and measuring and wirelessly transmitting cell data. A battery control module (BCM) is in communication with the CMUs. Thermal runaway sensors are mounted on the CMUs and/or the BCM. A master controller connected to the BCM includes a thermal runaway detection algorithm configured to detect a thermal runaway condition occurring within the RESS. The BCM uses data from the CMUs and thermal runaway sensors to execute first logic level which determines when to wake up the master controller. The master controller, in response to receipt of a wakeup signal, executes a second logic level to execute the algorithm.
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公开(公告)号：US20210234209A1
公开(公告)日：2021-07-29
申请号：US16773558
申请日：2020-01-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Fang Wang , Fiona E. Meyer-Teruel , Tao Wang , Thomas Timpf, JR. , Andrew C. Baughman
Abstract: A battery system includes a rechargeable energy storage system (RESS) having battery cells, and a battery controller network configured to execute two-level logic to detect a thermal runaway condition. The network includes RES S-embedded cell monitoring units (CMUs) electrically connected to a respective cell group, and measuring and wirelessly transmitting cell data. A battery control module (BCM) is in communication with the CMUs. Thermal runaway sensors are mounted on the CMUs and/or the BCM. A master controller connected to the BCM includes a thermal runaway detection algorithm configured to detect a thermal runaway condition occurring within the RESS. The BCM uses data from the CMUs and thermal runaway sensors to execute first logic level which determines when to wake up the master controller. The master controller, in response to receipt of a wakeup signal, executes a second logic level to execute the algorithm.
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公开(公告)号：US20140266222A1
公开(公告)日：2014-09-18
申请号：US13804151
申请日：2013-03-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew C. Baughman
IPC: G01R31/36
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。
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公开(公告)号：US20250035692A1
公开(公告)日：2025-01-30
申请号：US18360179
申请日：2023-07-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yue-Yun Wang , Xiumei Guo , Andrew C. Baughman , Bryan Paul Jagielo
IPC: G01R31/00 , G01R31/36 , G01R31/392 , G01R31/396 , H01M10/48
Abstract: Techniques are provided for generating an internal short circuit prediction of a battery cell. In one embodiment, the techniques involve receiving feature measurements of a plurality of cells, determining a snapshot moving average of the feature measurement of each of the plurality of cells based on a corresponding measurement window, determining a health indicator of each of the plurality of cells based on the respective snapshot moving averages, ranking a plurality of health indicators of the respective plurality of cells, wherein the plurality of health indicators is ranked by magnitude, determining a short circuit threshold value based on a second-ranked health indicator, and upon determining that a first-ranked health indicator exceeds the short circuit threshold value, generating a prediction of a short circuit in a cell corresponding to the first-ranked health indicator.
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5.发明授权公开(公告)号：US11626633B2
公开(公告)日：2023-04-11
申请号：US17007981
申请日：2020-08-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew C. Baughman , Thomas Timpf, Jr. , Christine E. Cabrera
IPC: H01M10/633 , H01M10/613 , H01M10/625 , H01M10/48 , H01M10/42
Abstract: A battery system with cell groups arranged in modules and with plurality of modules arranged in individual battery sub-packs includes a controller network configured to monitor the sub-packs. The network includes a plurality of cell monitoring units (CMUs); each CMU connected to one module for processing data for respective cell groups. The network also includes multiple voltage sensors on each CMU, with each sensor detecting voltage across one cell group. The network additionally includes an electronic controller programmed with an algorithm and in wireless communication with each CMU. The algorithm identifies when electrical power is disconnected from the RESS and directs electrical current through a selected sub-pack after power is restored. The algorithm also interrogates voltage sensors of a particular CMU, detects a change in voltage triggered by the current, and records a cross-reference between the particular CMU and the selected sub-pack when the change in voltage is detected.
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Patent Agency Ranking
公开(公告)号：US20230055095A1
公开(公告)日：2023-02-23
申请号：US17405488
申请日：2021-08-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yue-Yun Wang , Yangbing Zeng , Taylor R. Garrick , Andrew C. Baughman
IPC: G01R31/3835 , G01R31/388 , G01R31/396
Abstract: A system for self-discharge prognostics for vehicle battery cells with an internal short circuit includes a plurality of battery cells and a voltage sensor providing open-circuit voltage data over time for each battery cell. The system further includes a computerized prognostic controller operating programming to monitor the open-circuit voltage data over time for each of the plurality of battery cells and evaluate a voltage drop rate through a time window for each of the plurality of battery cells based upon the open-circuit voltage data. The controller further identifies one of the plurality of battery cells to include the internal short circuit based upon the voltage drop rate and signals an alert based upon the one of the plurality of battery cells including the internal short circuit.
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公开(公告)号：US11575173B2
公开(公告)日：2023-02-07
申请号：US16536904
申请日：2019-08-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew J. Cornelli , Philip J. Prociw , Karl C. Dorgan , Andrew C. Baughman , Steven J. Bunce , Steven M. Davis
Abstract: A rechargeable energy storage system includes a battery pack and a battery controller. The battery pack has a voltage current temperature module and multiple battery modules. Respective battery modules have multiple battery cells and are operable to store a module identifier that encodes at least one parameter of the battery cells, receive a configuration request from the voltage current temperature module, and transfer the module identifier to the voltage current temperature module in response to the configuration request. The battery controller is in communication with the voltage current temperature module and is operable to send a status request to the voltage current temperature module, receive the plurality of module identifiers from the voltage current temperature module in response to the status request, and compare the module identifiers to determine either a match or at least one mismatch among the module identifiers of the battery modules.
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公开(公告)号：US20210043894A1
公开(公告)日：2021-02-11
申请号：US16536904
申请日：2019-08-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew J. Cornelli , Philip J. Prociw , Karl C. Dorgan , Andrew C. Baughman , Steven J. Bunce , Steven M. Davis
Abstract: A rechargeable energy storage system includes a battery pack and a battery controller. The battery pack has a voltage current temperature module and multiple battery modules. Respective battery modules have multiple battery cells and are operable to store a module identifier that encodes at least one parameter of the battery cells, receive a configuration request from the voltage current temperature module, and transfer the module identifier to the voltage current temperature module in response to the configuration request. The battery controller is in communication with the voltage current temperature module and is operable to send a status request to the voltage current temperature module, receive the plurality of module identifiers from the voltage current temperature module in response to the status request, and compare the module identifiers to determine either a match or at least one mismatch among the module identifiers of the battery modules.
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公开(公告)号：US20180034113A1
公开(公告)日：2018-02-01
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
CPC classification number: H01M10/482 , B60L53/24 , B60L58/12 , B60L58/22 , G01R31/396 , H01M10/0525 , H01M10/425 , H01M10/46 , H01M2010/4271 , H01M2010/4278 , H01M2220/20
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.
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公开(公告)号：US09851393B2
公开(公告)日：2017-12-26
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
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.
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