公开(公告)号：US20140163853A1

公开(公告)日：2014-06-12

申请号：US13712778

申请日：2012-12-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Christopher W. Mousseau ,  Michael Wahlstrom ,  Zachary D. Bylsma

IPC: G01R31/36 ,  G06F15/00

CPC classification number: G01R31/3606 ,  G01R31/361 ,  G06F15/00 ,  H02J7/00

Abstract: A method for estimating charge capacity of a lithium iron-phosphate battery pack using data from a plug-in charge event. A laboratory-measured battery pack resistance, which is known to remain constant over a battery pack's life, can be used to determine open circuit voltage from terminal voltage during charging. Actual open circuit voltage after charging can be measured later, after the battery pack has rested for a sufficient amount of time. The two values of open circuit voltage, if taken at points on the battery pack's SOC-OCV curve which have great enough slope, provide two values of battery pack state of charge. By integrating charging current over the time interval between the two open circuit voltage readings, and using the two state of charge values, the battery pack capacity can be determined from the plug-in charge data.

Abstract translation: 使用来自插件充电事件的数据来估计磷酸铁锂电池组的充电容量的方法。 实验室测量的电池组电阻，已知在电池组的使用寿命内保持恒定，可用于在充电期间确定端子电压的开路电压。 充电后的实际开路电压可以在电池组休息足够的时间后进行测量。 开路电压的两个值，如果在电池组的SOC-OCV曲线上具有足够大的斜率的点处，则提供两个电池组充电状态值。 通过在两个开路电压读数之间的时间间隔内积分充电电流，并且使用两种充电状态值，可以从插件电荷数据确定电池组容量。

公开(公告)号：US09318778B2

公开(公告)日：2016-04-19

申请号：US14489165

申请日：2014-09-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael Wahlstrom ,  Ciro A. Spigno, Jr. ,  David R. Clark

IPC: H01M10/50 ,  H01M10/42 ,  G01K3/04 ,  H01M10/613 ,  H01M10/6567 ,  H01M10/625 ,  H01M10/48 ,  H01M10/60 ,  H01M10/633 ,  H01M10/635 ,  H01M10/617

CPC classification number: H01M10/425 ,  G01K3/04 ,  G01K7/42 ,  G01K2205/00 ,  H01M10/486 ,  H01M10/60 ,  H01M10/613 ,  H01M10/617 ,  H01M10/625 ,  H01M10/633 ,  H01M10/635 ,  H01M10/6567 ,  H01M2010/4278 ,  H01M2220/20

Abstract: System and methods for estimating a temperature of a battery are presented. In some embodiments, a method of estimating a temperature of a battery system may utilize measured battery system temperature data and measured ambient temperature data. Based on the measured temperature data, an average estimated temperature of the battery system may be determined using, at least in part, an extended Kalman filter and an energy balance process model associated with the battery system.

Abstract translation: 提出了用于估计电池温度的系统和方法。 在一些实施例中，估计电池系统的温度的方法可以利用测量的电池系统温度数据和测量的环境温度数据。 基于测量的温度数据，可以使用至少部分地与电池系统相关联的扩展卡尔曼滤波器和能量平衡过程模型来确定电池系统的平均估计温度。

公开(公告)号：US20250035449A1

公开(公告)日：2025-01-30

申请号：US18359979

申请日：2023-07-27

Applicant: GM Global Technology Operations LLC

Inventor： Fan Bai ,  Michael Wahlstrom ,  Donald K. Grimm ,  Paul E. Krajewski ,  Richard Gordon

IPC: G01C21/34

Abstract: A method to identify lane-level road congestion includes: modeling a lane-level congestion evolution process as a 2-dimensional (2D) Markov chain having multiple vehicles moving through a predetermined segment of a road; aggregating a volume of the multiple vehicles over a predetermined unit of time moving through the predetermined segment of a road; populating a lane congestion map identifying individual road lanes having differing levels of congestion; directing an output of the lane congestion map and an output of a lane congestion model to a lane routing engine; and identifying routes and route changes for a host vehicle to apply to improve a host vehicle estimated time of arrival (ETA) at a predetermined finish location.

公开(公告)号：US20250033640A1

公开(公告)日：2025-01-30

申请号：US18359983

申请日：2023-07-27

Applicant: GM Global Technology Operations LLC

Inventor： Fan Bai ,  Michael Wahlstrom ,  Donald K. Grimm ,  Paul E. Krajewski ,  Richard Gordon ,  Philip Mallinger ,  Jason R. Ekelmann

IPC: B60W30/16 ,  B60W30/18 ,  B60W40/04 ,  G08G1/01

Abstract: A method to incorporate lane level road congestion to enhance vehicle navigation includes: collecting vehicle data from a fleet of vehicles; identifying a lane level distribution of multiple vehicles operating on a road having multiple lanes including a host vehicle; comparing the lane level distribution against a non-congested lane of the road; and identifying if a lane level congestion is occurring in at least one of the multiple lanes.

公开(公告)号：US09128159B2

公开(公告)日：2015-09-08

申请号：US13712778

申请日：2012-12-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Christopher W. Mousseau ,  Michael Wahlstrom ,  Zachary D. Bylsma

IPC: H02J7/00 ,  G01R31/36 ,  G06F15/00

CPC classification number: G01R31/3606 ,  G01R31/361 ,  G06F15/00 ,  H02J7/00

Abstract: A method for estimating charge capacity of a lithium iron-phosphate battery pack using data from a plug-in charge event. A laboratory-measured battery pack resistance, which is known to remain constant over a battery pack's life, can be used to determine open circuit voltage from terminal voltage during charging. Actual open circuit voltage after charging can be measured later, after the battery pack has rested for a sufficient amount of time. The two values of open circuit voltage, if taken at points on the battery pack's SOC-OCV curve which have great enough slope, provide two values of battery pack state of charge. By integrating charging current over the time interval between the two open circuit voltage readings, and using the two state of charge values, the battery pack capacity can be determined from the plug-in charge data.

Abstract translation: 使用来自插件充电事件的数据来估计磷酸铁锂电池组的充电容量的方法。 已知在电池组的使用寿命内保持恒定的实验室测量的电池组电阻可用于在充电期间确定端子电压的开路电压。 充电后的实际开路电压可以在电池组休息足够的时间后进行测量。 开路电压的两个值，如果在电池组的SOC-OCV曲线上具有足够大的斜率的点处，则提供两个电池组充电状态值。 通过在两个开路电压读数之间的时间间隔内积分充电电流，并且使用两种充电状态值，可以从插件电荷数据确定电池组容量。