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1.发明申请公开(公告)号：US20220250497A1
公开(公告)日：2022-08-11
申请号：US17169107
申请日：2021-02-05
发明人： Yuan Zhang , Rui Wang , Xu Wang
摘要： Methods and system are described for recalibrating a charge storage capacity value of an electric energy storage device. In one example, the charge electric energy storage device may be a battery. The charge storage capacity value may be recalibrated via discharging and charging a battery via electric vehicle supply equipment.
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公开(公告)号：US20210097785A1
公开(公告)日：2021-04-01
申请号：US16589846
申请日：2019-10-01
发明人： Yuan Zhang , Rui Wang , Xu Wang
IPC分类号： G07C5/08 , B60L50/60 , B60L58/10 , G01R31/364
摘要： A power distribution system includes a contactor between a traction battery and a high-voltage bus. The system includes a controller configured to generate a contactor status to determine if the contactor is operating as commanded. The controller identifies a contactor as closed responsive to a rate of change of a voltage difference between a traction battery voltage and a high-voltage bus voltage over each of a predetermined number of time intervals being within a predetermined range.
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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：US10322640B2
公开(公告)日：2019-06-18
申请号：US14703924
申请日：2015-05-05
发明人： Yuan Zhang , Michael W. Degner
摘要： A vehicle having a traction battery and at least one electric machine for propelling the vehicle is provided. A high voltage DC bus electrically connects the traction battery to the electric machine. A controller monitors and commands power flow through the DC bus, the electric machine, and the battery. In response to a key-off event, the controller immediately discharges the DC bus by providing a current to the electric machines. This discharge continues until the voltage on the DC bus reaches a threshold. As the speed of the electric machine decreases towards a speed threshold, the voltage in the DC bus is maintained. Once the electric machine speed reduces past the threshold, the DC bus discharges the remaining voltage in the DC bus at a rate slower than the first immediate discharge.
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公开(公告)号：US20240109451A1
公开(公告)日：2024-04-04
申请号：US17953854
申请日：2022-09-27
发明人： Timothy Harris , Yuan Zhang , Toussaint Carpenter
CPC分类号： B60L53/66 , B60L53/63 , B60L55/00 , G06F1/28 , H02J7/0047 , H02J7/00712
摘要： Electric vehicle supply equipment includes a processor having a first file including software code for detecting whether a pilot connection exists with a vehicle interface of a vehicle and a second file partitioned from the first file including software code for requesting the vehicle interface to toggle a pilot switch a predetermined number of cycles.
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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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