In-range current sensor fault detection

    公开(公告)号:US10124789B2

    公开(公告)日:2018-11-13

    申请号:US14015344

    申请日:2013-08-30

    Abstract: A current sensor fault detection system is disclosed which enables detection of a current sensor fault while the current sensor is operating and providing a current sensor output which is within a normal operating range. The current sensor is monitored by at least one controller which compares a change in battery state of charge error with a predetermined threshold. The change in battery state of charge error is a difference between a first change in battery state of charge calculated by integrating battery current with respect to a time and a second change in battery state of charge calculated based on the battery open circuit voltage during the time.

    Method to Adjust Battery Minimum State of Charge Limits Based on Battery Power Capability
    15.
    发明申请
    Method to Adjust Battery Minimum State of Charge Limits Based on Battery Power Capability 有权
    基于电池功率能力调整电池最小充电限制状态的方法

    公开(公告)号:US20150306971A1

    公开(公告)日:2015-10-29

    申请号:US14264554

    申请日:2014-04-29

    Abstract: A hybrid-electric vehicle includes a traction battery. A controller may operate the traction battery within certain state of charge and voltage limits. The controller may define a minimum operating voltage or state of charge below which no power may be requested from the traction battery. The minimum voltage and state of charge may be based on an electrical resistance of the traction battery. The voltage may also be based on a minimum power level required to crank the engine while meeting emissions standards. As the battery ages, the minimum voltage level may be adjusted such that the minimum power level is available at the minimum voltage level.

    Abstract translation: 混合电动车辆包括牵引电池。 控制器可以在一定的充电状态和电压限制内操作牵引电池。 控制器可以定义最小工作电压或充电状态,在该状态下,不能从牵引电池请求电力。 最小电压和充电状态可以基于牵引电池的电阻。 电压也可以基于在满足排放标准的情况下起动发动机所需的最小功率水平。 随着电池老化,可以调节最小电压电平,使得最小功率电平在最小电压电平下可用。

    IN-RANGE CURRENT SENSOR FAULT DETECTION
    16.
    发明申请
    IN-RANGE CURRENT SENSOR FAULT DETECTION 审中-公开
    内部电流传感器故障检测

    公开(公告)号:US20150066262A1

    公开(公告)日:2015-03-05

    申请号:US14015344

    申请日:2013-08-30

    Abstract: A current sensor fault detection system is disclosed which enables detection of a current sensor fault while the current sensor is operating and providing a current sensor output which is within a normal operating range. The current sensor is monitored by at least one controller which compares a change in battery state of charge error with a predetermined threshold. The change in battery state of charge error is a difference between a first change in battery state of charge calculated by integrating battery current with respect to a time and a second change in battery state of charge calculated based on the battery open circuit voltage during the time.

    Abstract translation: 公开了一种电流传感器故障检测系统,其能够在电流传感器工作时检测电流传感器故障,并提供在正常工作范围内的电流传感器输出。 至少一个控制器监测电流传感器,该控制器将电池电量状态的变化与预定的阈值进行比较。 电池充电状态的变化是电池电流相对于时间积分的电池状态的第一变化与在时间期间基于电池开路电压计算出的电池电量状态的第二变化的差 。

    Traction battery with cell zone monitoring

    公开(公告)号:US10991991B2

    公开(公告)日:2021-04-27

    申请号:US16040288

    申请日:2018-07-19

    Abstract: A vehicle includes a traction battery having cells and at least one controller. The controller is programmed to charge and discharge the traction battery according to a net current for the traction battery derived from sets of temperature-based current values, each of the sets corresponding to a different one of the cells, and each of the values for a given one of the sets corresponding to a different zone of the cell.

    Charging strategies to mitigate lithium plating in electrified vehicle battery

    公开(公告)号:US10800284B2

    公开(公告)日:2020-10-13

    申请号:US15001618

    申请日:2016-01-20

    Abstract: A vehicle includes a traction battery and a controller in communication with the battery and programmed to control battery charging in response to a user-selected one of a plurality of charging strategies having different charging rates based on detection of lithium plating in the battery. The charging strategies may include options for faster charging with an urgent or emergency charging strategy selectable a limited number of times to mitigate battery performance degradation associated with lithium plating. A method implemented by a vehicle controller in a vehicle having a traction battery, may include controlling, by the controller, battery charging in response to a user-selected charging strategy selected from one of a plurality of available charging strategies each having a different charging rate and displayed on a user interface in response to detection of lithium plating in the traction battery, at least one charging strategy associated with additional lithium plating if selected.

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