-
11.发明授权公开(公告)号：US10981557B2
公开(公告)日：2021-04-20
申请号：US16245515
申请日：2019-01-11
Applicant: GM Global Technology Operations LLC
Inventor： Shaochun Ye , Daniel P. Grenn , Shifang Li , Russell K. Steele , Garrett M. Seeman
Abstract: Presented are traction battery pack balancing systems, methods for making/operating such systems, and multi-pack, electric-drive motor vehicles with battery pack balancing capabilities. A method for controlling operation of a motor vehicle includes a vehicle controller: receiving a key-off command signal to power off the motor vehicle; determining if a difference between corresponding electrical characteristics of first and second traction battery packs is greater than a calibrated characteristic differential threshold; determining if a difference between corresponding battery pack capacities of the first and second traction battery packs is greater than a calibrated capacity differential threshold; and, responsive to the characteristic difference not being greater than the calibrated characteristic differential threshold and the capacity difference being greater than the calibrated capacity differential threshold, transmitting a key-on command signal to power on the motor vehicle, and a pack balancing command signal to reduce the capacity difference to below the calibrated capacity differential threshold.
-
公开(公告)号：US09802558B2
公开(公告)日：2017-10-31
申请号：US14040355
申请日：2013-09-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew J. Namou , Marc Reischmann , Marjorie A. Bassham , David J. Mifsud , James E. Tarchinski , Russell K. Steele
CPC classification number: B60R16/03 , B60L1/00 , B60L3/0046 , B60L3/04 , B60L11/1851 , B60L11/1861 , B60L11/1875 , B60L2240/34 , B60L2240/545 , B60L2240/547 , B60L2240/549 , H01M2/206 , H01M2220/20 , H02J7/0063 , H02J2007/0067 , Y02T10/7005 , Y02T10/7044 , Y02T10/705
Abstract: Systems and methods disclosed herein provide for a distributed high-voltage bus for a battery system included in a vehicle. In certain embodiments, the systems and methods disclosed herein provide for a scalable high-voltage bus architecture utilizing a common high-voltage rail for powering vehicle systems and/or modules. Independent contactors may be utilized on the opposite rail to selective power high-voltage branches. In further embodiments, a common rail pre-charge circuit may be utilized allowing for independent pre-charging of HV branches and systems and/or modules coupled to the HV bus.
-
公开(公告)号：US11754629B2
公开(公告)日：2023-09-12
申请号：US16533180
申请日：2019-08-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yue Fan , Shifang Li , Russell K. Steele , James E. Tarchinski
IPC: G01R31/36 , G01R31/385 , G01R31/364
CPC classification number: G01R31/3648 , G01R31/364 , G01R31/385
Abstract: An active isolation detection method may be used with an electrical system having a battery pack connected to a high-voltage bus. The bus has positive and negative bus rails, each having a respective rail-to-ground voltage. The method may include connecting variable resistance element to the high-voltage bus, and determining input information indicative electrical characteristics of the battery pack, the high-voltage bus, and/or a charging station. The method includes varying a bias resistance of the high-voltage bus, via control of the variable resistance element, e.g., via duty cycle control of a binary switch in series with a bias resistor, to produce a varied bias resistance based on the input information. A target voltage shift is achieved on the high-voltage bus as a target level of change in one of the rail-to-ground voltages. An isolation resistance of the electrical system is determined via the controller using the varied bias resistance.
-
公开(公告)号：US20230068153A1
公开(公告)日：2023-03-02
申请号：US17463703
申请日：2021-09-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Rashmi Prasad , Chandra S. Namuduri , Robert J. Heydel , Russell K. Steele
Abstract: A rechargeable energy storage system (RESS) includes a battery controller and battery modules, each respective module having battery cells, a cell sense board, and a semiconductor switch. The switch is connected in parallel with the cells within the respective module, and configured to conduct an electrical current during a thermal runaway propagation (TRP) event in which one or more cells is in an open-circuit state. This action bypasses the module and enables electrical components to be powered by the RESS during the TRP event. A battery electric system includes a direct current (“DC”) voltage bus, an electrical component connected thereto, the battery controller, and the RESS. A method for constructing the RESS includes connecting a respective semiconductor switch in parallel with the at least one battery cell of each respective one of the multiple battery modules, and electrically connecting the multiple battery modules together to construct the RESS.
-
15.发明申请公开(公告)号：US20200223422A1
公开(公告)日：2020-07-16
申请号：US16245515
申请日：2019-01-11
Applicant: GM Global Technology Operations LLC
Inventor： Shaochun Ye , Daniel P. Grenn , Shifang Li , Russell K. Steele , Garrett M. Seeman
Abstract: Presented are traction battery pack balancing systems, methods for making/operating such systems, and multi-pack, electric-drive motor vehicles with battery pack balancing capabilities. A method for controlling operation of a motor vehicle includes a vehicle controller: receiving a key-off command signal to power off the motor vehicle; determining if a difference between corresponding electrical characteristics of first and second traction battery packs is greater than a calibrated characteristic differential threshold; determining if a difference between corresponding battery pack capacities of the first and second traction battery packs is greater than a calibrated capacity differential threshold; and, responsive to the characteristic difference not being greater than the calibrated characteristic differential threshold and the capacity difference being greater than the calibrated capacity differential threshold, transmitting a key-on command signal to power on the motor vehicle, and a pack balancing command signal to reduce the capacity difference to below the calibrated capacity differential threshold.
-
Patent Agency Ranking
公开(公告)号：US20200217899A1
公开(公告)日：2020-07-09
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 , H02J7/00 , B60L58/12 , B60L58/14 , G01R31/00 , G01R31/367
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：US10596917B2
公开(公告)日：2020-03-24
申请号：US16102802
申请日：2018-08-14
Applicant: GM Global Technology Operations LLC
Inventor： Brendan M. Conlon , Shifang Li , Kris Sevel , Russell K. Steele
Abstract: An electrical system includes cables, a DC charge connector, first and second battery modules, a splice device, and a controller. Each battery module has first, second, third, and fourth electrical connectors receiving a respective one of the cables. The battery modules are connected to each other via the cables, and further have first, second, third, and fourth switches that connect battery cell strings to one or more connectors. The charge connector is connected to one of the cables between the first electrical connectors. The splice device connects the charge connector to the first connector of the first battery module and to a pair of the cables. A charging current may be split between the battery modules. The controller selectively establishes parallel charging, parallel drive, and separate drive and charging modes for each battery module. The system may have an independent drive mode.
-
公开(公告)号：US10066738B2
公开(公告)日：2018-09-04
申请号：US14974740
申请日：2015-12-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Russell K. Steele , Daniel J. Davis , Peter Kung Chiang
Abstract: A method of controlling a transmission having a gearbox and a pump operable to circulate a fluid through the gearbox, includes sensing an acceleration of the vehicle, and adjusting an operating state of the pump. The operating state of the pump is adjusted to change the operating state of the pump from an initial operating state, to an adjusted operating state, when the acceleration of the vehicle is greater than an acceleration threshold. When the acceleration of the vehicle decreases from being greater than the acceleration threshold to being below the acceleration threshold, the operating state of the pump is returned to the initial operating state. The operating state of the pump may include a speed of the pump, a control signal representing a fluid flow rate for the current speed of the pump, or a fluid flow circuit for supplying the fluid to the pump.
-
公开(公告)号：US10065518B2
公开(公告)日：2018-09-04
申请号：US15157961
申请日：2016-05-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Russell K. Steele , Peter Kung Chiang , Brandon R. Jones
Abstract: An off-board charging device disposed to electrically charge an electric energy storage system via an electrical charging system on-board a vehicle is described. This includes an electric machine electrically connected to the electric energy storage system and is disposed to supply propulsion effort to the vehicle. A method for controlling the off-board charging device includes determining severity of a drive cycle that occurs prior to a charging event for the electric energy storage system. A charging profile is determined based upon the severity of the drive cycle. A controller commands operation of the off-board charging device based upon the charging profile.
-
公开(公告)号：US09908419B2
公开(公告)日：2018-03-06
申请号：US14950066
申请日：2015-11-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Russell K. Steele , James F Crawford , Alexander Bilinski
CPC classification number: B60L11/18 , B60L3/0046 , B60L3/0092 , B60L11/1868 , B60L2210/10 , B60L2240/547 , H02M3/04
Abstract: A vehicle including a high-voltage electric battery assembly including first and second battery cell modules and DC/DC electric power converter assembly is described. The DC/DC electric power converter assembly selectively converts electric power from the first battery cell module and the second battery cell module. A second end of the DC/DC electric power converter is electrically connected to a low-voltage system. The low-voltage system includes a first subsystem configured to provide a critical vehicle operation. A controller includes algorithmic code executable to monitor the high-voltage battery assembly, including, upon detecting a fault in the first battery cell module of the high-voltage battery assembly, controlling the DC/DC electric power converter assembly to electrically convert electric power from the second battery cell module to low-voltage electric power that is transferred to the first subsystem.
-
-
-
-
-
-
-
-
-
Search Results
24
records
(took 0.019 seconds)
