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公开(公告)号：US12051935B2
公开(公告)日：2024-07-30
申请号：US17143903
申请日：2021-01-07
CPC分类号： H02J7/00716 , H01M10/44 , H01M2220/20
摘要： A controller, during charging of a traction battery by a remote charger, and responsive to a difference between a requested charge current and a current supplied by the remote charger exceeding a first threshold value for a predefined period of time, increases a requested charge voltage to a limit value. The controller further, responsive to a voltage across a capacitor and a voltage across the traction battery being same, and a voltage of the remote charger and the limit value being same, commands the remote charger to discontinue the charging.
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公开(公告)号：US20220216718A1
公开(公告)日：2022-07-07
申请号：US17143903
申请日：2021-01-07
摘要： A controller, during charging of a traction battery by a remote charger, and responsive to a difference between a requested charge current and a current supplied by the remote charger exceeding a first threshold value for a predefined period of time, increases a requested charge voltage to a limit value. The controller further, responsive to a voltage across a capacitor and a voltage across the traction battery being same, and a voltage of the remote charger and the limit value being same, commands the remote charger to discontinue the charging.
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公开(公告)号：US10737584B2
公开(公告)日：2020-08-11
申请号：US16164046
申请日：2018-10-18
发明人： Yuan Zhang , Rui Wang , Xu Wang
摘要： A system for a vehicle including a traction battery, electrical loads, and a controller configured to, during a charge operation, activate the loads such that charge current output by a charger is consumed by the loads and charge current input to the battery approaches zero to update a state of charge (SOC) value of the battery, and deactivate the loads upon completion of the update such that charge current input to the battery increases.
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公开(公告)号：US20200122584A1
公开(公告)日：2020-04-23
申请号：US16164046
申请日：2018-10-18
发明人： Yuan Zhang , Rui Wang , Xu Wang
摘要： A system for a vehicle including a traction battery, electrical loads, and a controller configured to, during a charge operation, activate the loads such that charge current output by a charger is consumed by the loads and charge current input to the battery approaches zero to update a state of charge (SOC) value of the battery, and deactivate the loads upon completion of the update such that charge current input to the battery increases.
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公开(公告)号：US11299056B2
公开(公告)日：2022-04-12
申请号：US16707770
申请日：2019-12-09
发明人： Rui Wang , Aaron Walker , Yuan Zhang
摘要： A vehicle includes charger contactors configured to selectively electrically couple terminals for connecting to a charger to corresponding terminals of a high-voltage bus. The vehicle includes a precharge contactor configured to selectively couple a terminal of a battery to the high-voltage bus through an impedance element. The vehicle includes a controller programmed to command the charger contactors to an open state for a drive cycle and command the precharge contactor to close at a start of the drive cycle and, responsive to a voltage across the terminals for connecting to the charger changing from being less than a first predetermined voltage immediately prior to the precharge contactor being closed to being greater than a second predetermined voltage at a completion of precharging, inhibit vehicle operation and disconnect the battery from the high-voltage bus.
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公开(公告)号：US11167661B2
公开(公告)日：2021-11-09
申请号：US16589898
申请日：2019-10-01
发明人： Rui Wang , Xu Wang , Xiao Guang Yang , Yuan Zhang
摘要： A vehicle includes an electric machine, a battery, and a controller. The electric machine is configured to deliver power to wheels to drive the vehicle. The battery has an array of cells that are configured to deliver electrical power to the electric machine. The controller is programmed to, in response to a charge imbalance within the array of cells, simultaneously discharge a number of cells within the array based on a temperature of the controller.
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公开(公告)号：US11981216B2
公开(公告)日：2024-05-14
申请号：US17147608
申请日：2021-01-13
发明人： Baojin Wang , Chingchi Chen , Benjamin A. Tabatowski-Bush , Aaron Walker , Rui Wang , Xianzhi Gong , Xu Wang , John Paul Gibeau
IPC分类号： B60L3/00 , G01R31/00 , G01R31/327
CPC分类号： B60L3/0046 , G01R31/006 , G01R31/3275
摘要： A power system includes a battery and a controller. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration of a continuous voltage drop across another of the contactors after the another of the contactors is commanded to open exceeds a threshold.
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公开(公告)号：US11332038B1
公开(公告)日：2022-05-17
申请号：US17129618
申请日：2020-12-21
发明人： Rui Wang , Xiao Guang Yang , Baojin Wang , Xu Wang
IPC分类号： B60L58/16 , G01R31/387 , G01R31/36 , G01R31/392
摘要： Methods and system are described for estimating an amount of battery usage for a traction battery of a vehicle. The traction battery usage estimate may be based on or a function of a distance per gallon of gasoline-equivalent so that the usage estimate may be more familiar to vehicle operators. In addition, the traction battery usage estimate may also be based on traction battery current and traction battery voltage.
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公开(公告)号：US11225170B2
公开(公告)日：2022-01-18
申请号：US16691774
申请日：2019-11-22
发明人： Rui Wang , Xiao Guang Yang , Yuan Zhang , Xu Wang
摘要： A vehicle includes a traction battery having a plurality of battery cells and a balance circuit configured to selectively discharge one or more of the battery cells. A controller is programmed to estimate charge capacities of the battery cells and determine a standard deviation of the estimated capacities. The controller is further programmed to determine a skewness of the estimated capacities. The controller is also programmed to, in response to the skewness exceeding a first threshold, command the balance circuit to discharge one or more of the battery cells when a state of charge (SOC) of the traction battery is less than a second threshold, and, in response to the skewness being less than the first threshold, command the balance circuit to discharge one or more of the battery cells when the SOC of the traction battery is greater than the second threshold.
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公开(公告)号：US20210170899A1
公开(公告)日：2021-06-10
申请号：US16707770
申请日：2019-12-09
发明人： Rui Wang , Aaron Walker , Yuan Zhang
摘要： A vehicle includes charger contactors configured to selectively electrically couple terminals for connecting to a charger to corresponding terminals of a high-voltage bus. The vehicle includes a precharge contactor configured to selectively couple a terminal of a battery to the high-voltage bus through an impedance element. The vehicle includes a controller programmed to command the charger contactors to an open state for a drive cycle and command the precharge contactor to close at a start of the drive cycle and, responsive to a voltage across the terminals for connecting to the charger changing from being less than a first predetermined voltage immediately prior to the precharge contactor being closed to being greater than a second predetermined voltage at a completion of precharging, inhibit vehicle operation and disconnect the battery from the high-voltage bus.
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