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公开(公告)号：US10124686B2
公开(公告)日：2018-11-13
申请号：US15211659
申请日：2016-07-15
摘要： An electrical system connectable to an offboard power supply includes a battery pack, parallel DC-coupled conductive and inductive charging systems, and a controller. The controller initiates charging of the battery pack using analog low-voltage signals. A charging preference may prioritize charging via a designated one of the charging systems. Another electrical system includes a battery pack connected to a DC voltage bus, a charge coupler connectable to the offboard power supply to establish a plug-in charging connection, parallel DC-coupled conductive and inductive charging systems, and a controller. The controller commands charging using the analog low-voltage control signals, doing so via the conductive charging system when the charge coupler is plugged into the power supply and via the wireless charger when the charge coupler is not plugged into the power supply and the controller detects proximity of the system to the primary induction coil.
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公开(公告)号：US09789771B2
公开(公告)日：2017-10-17
申请号：US14695844
申请日：2015-04-24
CPC分类号： B60L11/18 , B60L1/00 , Y02T10/7005 , Y02T10/92
摘要： A product for use with a vehicle may include a high voltage electrical storage system unit. An energy storage unit may supply power to a high voltage wakeup module. The high voltage wakeup module may connect and may disconnect a number of loads from the energy storage unit when the vehicle is operating or shut down.
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公开(公告)号：US20210041505A1
公开(公告)日：2021-02-11
申请号：US16533180
申请日：2019-08-06
发明人： Yue Fan , Shifang Li , Russell K. Steele , James E. Tarchinski
IPC分类号： G01R31/36 , G01R31/364 , G01R31/385
摘要： 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.
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公开(公告)号：US20200055404A1
公开(公告)日：2020-02-20
申请号：US16102802
申请日：2018-08-14
发明人： Brendan M. Conlon , Shifang Li , Kris Sevel , Russell K. Steele
IPC分类号： B60L11/18
摘要： 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.
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公开(公告)号：US10816606B2
公开(公告)日：2020-10-27
申请号：US16239188
申请日：2019-01-03
IPC分类号： G01R31/389 , B60L58/12 , G01R31/00 , G01R31/367 , B60L58/14 , H02J7/00 , H02P27/06
摘要： 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.
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公开(公告)号：US20180015833A1
公开(公告)日：2018-01-18
申请号：US15211659
申请日：2016-07-15
IPC分类号： B60L11/18
CPC分类号： B60L11/182 , B60L11/1811 , B60L11/1816 , B60L11/1833 , B60L11/1835 , B60L11/185 , B60L11/1864 , H02J7/00
摘要： An electrical system connectable to an offboard power supply includes a battery pack, parallel DC-coupled conductive and inductive charging systems, and a controller. The controller initiates charging of the battery pack using analog low-voltage signals. A charging preference may prioritize charging via a designated one of the charging systems. Another electrical system includes a battery pack connected to a DC voltage bus, a charge coupler connectable to the offboard power supply to establish a plug-in charging connection, parallel DC-coupled conductive and inductive charging systems, and a controller. The controller commands charging using the analog low-voltage control signals, doing so via the conductive charging system when the charge coupler is plugged into the power supply and via the wireless charger when the charge coupler is not plugged into the power supply and the controller detects proximity of the system to the primary induction coil.
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公开(公告)号：US20170144553A1
公开(公告)日：2017-05-25
申请号：US14950066
申请日：2015-11-24
CPC分类号： B60L11/18 , B60L3/0046 , B60L3/0092 , B60L11/1868 , B60L2210/10 , B60L2240/547 , H02M3/04
摘要： 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.
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8.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
摘要： 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.
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公开(公告)号：US09802558B2
公开(公告)日：2017-10-31
申请号：US14040355
申请日：2013-09-27
发明人： Andrew J. Namou , Marc Reischmann , Marjorie A. Bassham , David J. Mifsud , James E. Tarchinski , Russell K. Steele
CPC分类号： 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
摘要： 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.
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公开(公告)号：US20230068153A1
公开(公告)日：2023-03-02
申请号：US17463703
申请日：2021-09-01
摘要： 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.
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