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    Battery state estimation using electrode transient model
    3.
    发明授权
    Battery state estimation using electrode transient model 有权

    公开(公告)号：US10950903B2

    公开(公告)日：2021-03-16

    申请号：US16213159

    申请日：2018-12-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Charles W. Wampler, II ,  Daniel R. Baker

    IPC: H02J7/00 ,  H01M10/48 ,  H01M10/42 ,  H01M10/0525 ,  H01M10/44 ,  B60L58/12

    Abstract: An electrical system includes a battery pack, sensors, and a controller. The sensors configured output measured state signals indicative of an actual state of the battery back, including a respective actual voltage, current, and temperature of each of the multiple battery cells. The controller executes a method to generate, responsive to the measured state signals, an estimated state of the multiple battery cells using a respective open-circuit voltage and low-frequency transient voltage of each of the multiple battery cells. The controller estimates the low-frequency transient voltages using a porous electrode transient (PET) model as part of a model set, the PET model having open-circuit voltage elements representing uneven charge distribution within a cell electrode. State of charge (SOC) of the battery pack is estimated using the estimated voltages. An operating state of the electrical system is controlled in real-time responsive to the estimated SOC.

    Battery state estimation using high-frequency empirical model with resolved time constant
    4.
    发明授权
    Battery state estimation using high-frequency empirical model with resolved time constant 有权

    公开(公告)号：US10928457B2

    公开(公告)日：2021-02-23

    申请号：US16213147

    申请日：2018-12-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Charles W. Wampler, II

    IPC: G01R31/367 ,  G01R31/371 ,  G01R31/3842 ,  H02J7/00 ,  H02J7/14 ,  B60L53/00 ,  B60L58/12 ,  B60K6/28

    Abstract: An electrical system includes a battery, sensors, and a controller. The sensors output measured signals indicative of an actual state of the battery, including respective actual voltage, current, and temperature signals for each battery cell. The controller, in conducting a method, generates an estimated state of the battery, including a predicted voltage of the battery, doing so responsive to the signals using an open-circuit voltage and an output of an empirical model. An operating state of the electrical system is controlled using the estimated state. The empirical model includes low-pass/band-pass filters and a high-pass filter each with a different time-constant, the time-constants being spread over a time-constant range. Each low-pass/band-pass filter branches through a basis function(s) whose output(s) are multiplied by a respective resistance value to generate higher-frequency voltage transients. The controller sums the open-circuit voltage and voltage transients to derive the predicted voltage.

    Manufacturing fixture
    6.
    发明授权
    Manufacturing fixture 有权

    公开(公告)号：US09821424B2

    公开(公告)日：2017-11-21

    申请号：US14506528

    申请日：2014-10-03

    Applicant: GM Global Technology Operations LLC

    Inventor： Ronald M. Lesperance ,  Charles W. Wampler, II ,  Mark Allen Smith

    IPC: B23Q3/18 ,  B23K37/04 ,  B23K31/02 ,  B25B11/02 ,  B23Q1/62 ,  B23K101/18

    CPC classification number: B23Q3/18 ,  B23K31/02 ,  B23K37/0408 ,  B23K2101/18 ,  B23Q1/621 ,  B25B11/02

    Abstract: A manufacturing fixture includes a rigid base defining a control plane. A first cone locator pin has a first longitudinal axis. The first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane to engage a complementary locating aperture defined in a workpiece. The first cone locator pin engages the complementary locating aperture to locate the workpiece and constrain translation of the workpiece with respect to the control plane. A second cone locator pin has a second longitudinal axis. The second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane to engage a complementary locating hole defined in a workpiece. The second cone locator pin engages the complementary locating hole to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis.

    MANUFACTURING FIXTURE
    7.
    发明申请
    MANUFACTURING FIXTURE 有权
    制造工具

    公开(公告)号：US20160096246A1

    公开(公告)日：2016-04-07

    申请号：US14506528

    申请日：2014-10-03

    Applicant: GM Global Technology Operations LLC

    Inventor： Ronald M. Lesperance ,  Charles W. Wampler, II ,  Mark Allen Smith

    IPC: B23Q3/18 ,  B23Q1/56

    CPC classification number: B23Q3/18 ,  B23K31/02 ,  B23K37/0408 ,  B23K2101/18 ,  B23Q1/621 ,  B25B11/02

    Abstract: A manufacturing fixture includes a rigid base defining a control plane. A first cone locator pin has a first longitudinal axis. The first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane to engage a complementary locating aperture defined in a workpiece. The first cone locator pin engages the complementary locating aperture to locate the workpiece and constrain translation of the workpiece with respect to the control plane. A second cone locator pin has a second longitudinal axis. The second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane to engage a complementary locating hole defined in a workpiece. The second cone locator pin engages the complementary locating hole to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis.

    Abstract translation: 制造夹具包括限定控制平面的刚性基座。 第一锥形定位销具有第一纵向轴线。 第一锥形定位销连接到刚性基座，第一纵向轴线垂直于控制平面以接合限定在工件中的互补定位孔。 第一锥形定位销与互补定位孔接合以定位工件并约束工件相对于控制平面的平移。 第二锥定位销具有第二纵轴。 第二锥形定位销连接到刚性基座，第二纵向轴线垂直于控制平面，以接合限定在工件中的互补定位孔。 第二锥形定位销接合互补的定位孔以定位工件并防止工件围绕第一纵向轴线旋转。

    Simplified switching for state of charge balancing of battery strings and modules
    9.
    发明授权
    Simplified switching for state of charge balancing of battery strings and modules 有权

    公开(公告)号：US12244162B2

    公开(公告)日：2025-03-04

    申请号：US17575797

    申请日：2022-01-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jun-mo Kang ,  Charles W. Wampler, II ,  Dave G. Rich

    IPC: H02J7/00 ,  H01M10/42 ,  H01M50/269

    Abstract: A battery system includes: at least two battery modules, where each of the at least two battery modules includes three strings of battery cells; and a switch control module configured to: determine state of charges (SOCs) of the strings of battery cells, respectively; determine, using model predictive control based on the SOCs, periods of phases, respectively; determine, using model predictive control based on the SOCs, periods for the strings, respectively, to be connected to a second positive terminal and a negative terminal during the phases, the determination of the periods for the strings including: setting the period for one of the strings of one of the battery modules to end before the end of a phase; and setting the periods for the other two strings of the one of the battery modules to end at the end of the phase.

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