STATE ESTIMATING DEVICE OF SECONDARY BATTERY
    1.
    发明申请
    STATE ESTIMATING DEVICE OF SECONDARY BATTERY 有权
    二次电池状态估计装置

    公开(公告)号:US20100153038A1

    公开(公告)日:2010-06-17

    申请号:US12449390

    申请日:2008-03-13

    IPC分类号: G01R31/36 G06F19/00

    摘要: A battery state estimating unit (110) estimates an internal state of a secondary battery according to a battery model equation in every arithmetic cycle, and calculates an SOC based on a result of the estimation. A parameter characteristic map (120) stores a characteristic map based on a result of actual measurement performed in an initial state (in a new state) on a parameter diffusion coefficient (Ds) and a DC resistance (Ra) in the battery model equation. The parameter change rate estimating unit (130) estimates a DC resistance change rate (gr) represented by a ratio of a present DC resistance (Rc) with respect to a new-state parameter value (Ran) by parameter identification based on the battery model equation, using battery data (Tb, Vb and Ib) measured by sensors as well as the new-state parameter value (Ran) of the DC resistance corresponding to the p resent battery state and read from the parameter characteristic map (120).

    摘要翻译: 电池状态估计单元(110)根据每个运算周期中的电池模型方程来估计二次电池的内部状态,并且基于估计结果来计算SOC。 参数特征图(120)基于在初始状态(新状态下)对电池模型方程式中的参数扩散系数(Ds)和直流电阻(Ra)进行的实际测量的结果来存储特性图。 参数变化率估计单元(130)基于电池模型通过参数识别来估计由当前直流电阻(Rc)相对于新状态参数值(Ran)的比率所表示的直流电阻变化率(gr) 方程式,使用由传感器测量的电池数据(Tb,Vb和Ib)以及与参数电池状态对应的直流电阻的新状态参数值(Ran),并从参数特性图(120)读取。

    State estimating device of secondary battery
    2.
    发明授权
    State estimating device of secondary battery 有权
    二次电池状态估计装置

    公开(公告)号:US08108161B2

    公开(公告)日:2012-01-31

    申请号:US12449390

    申请日:2008-03-13

    IPC分类号: G01R31/36

    摘要: A battery state estimating unit estimates an internal state of a secondary battery according to a battery model equation in every arithmetic cycle, and calculates an SOC based on a result of the estimation. A parameter characteristic map stores a characteristic map based on a result of actual measurement performed in an initial state (in a new state) on a parameter diffusion coefficient and a DC resistance in the battery model equation. The parameter change rate estimating unit estimates a DC resistance change rate represented by a ratio of a present DC resistance with respect to a new-state parameter value by parameter identification based on the battery model equation, using battery data measured by sensors as well as the new-state parameter value of the DC resistance corresponding to the present battery state and read from the parameter characteristic map.

    摘要翻译: 电池状态估计单元根据每个算术循环中的电池模型等式来估计二次电池的内部状态,并且基于估计结果来计算SOC。 参数特性图基于在初始状态(新状态下)对电池模型方程中的参数扩散系数和直流电阻进行的实际测量的结果存储特性图。 参数变化率估计单元使用由传感器测量的电池数据以及基于电池模型方程的参数识别来估计当前DC电阻相对于新状态参数值的比率的直流电阻变化率,以及 对应于当前电池状态的直流电阻的新状态参数值,并从参数特性图中读取。

    STATE ESTIMATING DEVICE FOR SECONDARY BATTERY
    3.
    发明申请
    STATE ESTIMATING DEVICE FOR SECONDARY BATTERY 有权
    用于二次电池的状态估计装置

    公开(公告)号:US20110161025A1

    公开(公告)日:2011-06-30

    申请号:US13061008

    申请日:2009-08-28

    IPC分类号: G01R31/36

    摘要: A battery state estimating unit estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate and a battery current based on a result of the estimation. A parameter estimating unit obtains a battery current measured by a sensor as well as the charging rate and the battery current estimated by the battery state estimating unit. The parameter estimating unit estimates a capacity deterioration parameter such that a rate of change in difference (estimation error) between a summed value of an actual current and a summed value of an estimated current with respect to the charging rate is minimized. A result obtained by estimating the capacity deterioration parameter is reflected in the battery model by the battery state estimating unit.

    摘要翻译: 电池状态估计单元根据每个算术循环中的电池模型等式来估计二次电池的内部状态,并且基于估计结果来估计充电率和电池电流。 参数估计单元获得由传感器测量的电池电流以及由电池状态估计单元估计的充电率和电池电流。 参数估计单元估计容量劣化参数,使得实际电流的求和值与估计电流的相加值相对于充电率之间的差值(估计误差)的变化率最小化。 通过估计容量劣化参数获得的结果由电池状态估计单元反映在电池模型中。

    State estimating device for secondary battery
    4.
    发明授权
    State estimating device for secondary battery 有权
    二次电池状态估计装置

    公开(公告)号:US08615372B2

    公开(公告)日:2013-12-24

    申请号:US13061008

    申请日:2009-08-28

    IPC分类号: G06F19/00

    摘要: A battery state estimating unit estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate and a battery current based on a result of the estimation. A parameter estimating unit obtains a battery current measured by a sensor as well as the charging rate and the battery current estimated by the battery state estimating unit. The parameter estimating unit estimates a capacity deterioration parameter such that a rate of change in difference (estimation error) between a summed value of an actual current and a summed value of an estimated current with respect to the charging rate is minimized. A result obtained by estimating the capacity deterioration parameter is reflected in the battery model by the battery state estimating unit.

    摘要翻译: 电池状态估计单元根据每个算术循环中的电池模型等式来估计二次电池的内部状态,并且基于估计结果来估计充电率和电池电流。 参数估计单元获得由传感器测量的电池电流以及由电池状态估计单元估计的充电率和电池电流。 参数估计单元估计容量劣化参数,使得实际电流的求和值与估计电流的相加值相对于充电率之间的差值(估计误差)的变化率最小化。 通过估计容量劣化参数获得的结果由电池状态估计单元反映在电池模型中。

    POWER SUPPLY SYSTEM, ELECTRIC VEHICLE PROVIDED WITH SAME, AND CONTROL METHOD OF POWER SUPPLY SYSTEM
    6.
    发明申请
    POWER SUPPLY SYSTEM, ELECTRIC VEHICLE PROVIDED WITH SAME, AND CONTROL METHOD OF POWER SUPPLY SYSTEM 审中-公开
    电源系统,电动车提供电源系统及电源系统的控制方法

    公开(公告)号:US20120091930A1

    公开(公告)日:2012-04-19

    申请号:US13378688

    申请日:2010-06-29

    IPC分类号: H02P1/00 H02J1/00

    摘要: When it is determined by a determining portion (54) that the SOC of a first auxiliary power storage device (BB1) has reached a first lower limit value (TL), a switching control portion (56) generates a switching signal (SW) to switch from the first auxiliary power storage device (BB1) to the second auxiliary power storage device (BB2). A SOC estimating portion (52) measures the OCV for the first auxiliary power storage device (BB1), for which it has been determined that the SOC has reached the first lower limit value (TL) and has thus been disconnected, and estimates the SOC of that first auxiliary power storage device (BB1), based on that measured OCV. If the estimated SOC is higher than the first lower limit value (TL), after the SOC of the second auxiliary power storage device (BB2) has reached the first lower limit value (TL), the switching control portion (56) generates a switching signal (SW) to switch from the second auxiliary power storage device (BB2) to the first auxiliary storage device (BB1).

    摘要翻译: 当确定部分(54)确定第一辅助蓄电装置(BB1)的SOC已达到第一下限值(TL)时,切换控制部分(56)产生切换信号(SW)至 从第一辅助蓄电装置(BB1)切换到第二辅助蓄电装置(BB2)。 SOC估计部(52)测定第一辅助蓄电装置(BB1)的OCV,对于该第一辅助蓄电装置,已经确定SOC已达到第一下限值(TL)并因此被断开,并且估计SOC 的第一辅助蓄电装置(BB1)。 如果估计的SOC高于第一下限值(TL),则在第二辅助蓄电装置(BB2)的SOC达到第一下限值(TL)之后,切换控制部(56)产生切换 信号(SW)从第二辅助蓄电装置(BB2)切换到第一辅助蓄电装置(BB1)。

    DEGRADATION DETERMINATION DEVICE AND DEGRADATION DETERMINATION METHOD FOR LITHIUM ION SECONDARY BATTERY
    10.
    发明申请
    DEGRADATION DETERMINATION DEVICE AND DEGRADATION DETERMINATION METHOD FOR LITHIUM ION SECONDARY BATTERY 有权
    用于锂离子二次电池的降解测定装置和降解测定方法

    公开(公告)号:US20130099794A1

    公开(公告)日:2013-04-25

    申请号:US13640551

    申请日:2011-04-12

    IPC分类号: G01R31/36

    摘要: A degradation determination device includes: a measuring unit measuring an open-circuit voltage characteristic indicating an open-circuit voltage variation with respect to a lithium ion secondary battery capacity variation; and a determining unit determining a degradation state due to wear and precipitation of lithium using a parameter for identifying the open-circuit voltage characteristic that substantially coincides with the measured open-circuit voltage characteristic. The parameter includes single electrode capacity retention rates expressed by the expressions (I) positive electrode capacity retention rate=degraded positive electrode capacity/initial positive electrode capacity and (II) negative electrode capacity retention rate=degraded negative electrode capacity/initial negative electrode capacity, and a battery capacity variation expressed by the expression (III) battery capacity variation=degraded negative electrode capacity×shift of a negative electrode composition axis with respect to a positive electrode composition axis.

    摘要翻译: 劣化判定装置包括:测量单元,其测量表示相对于锂离子二次电池容量变化的开路电压变化的开路电压特性; 以及确定单元,其使用用于识别与所测量的开路电压特性基本一致的开路电压特性的参数来确定由于锂的磨损和析出引起的劣化状态。 该参数包括以下表达的单电极容量保持率(I)正极容量保持率=正极容量/初始正极容量降低,(II)负极容量保持率=劣化负极容量/初始负极容量, 和电池容量变化表达式(III)表示的电池容量变化量=负极组合物轴线相对于正极组成轴线的负极容量×负载×偏移。