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    • 6. 发明公开
    • DIAGNOSIS DEVICE AND DIAGNOSIS METHOD FOR SECONDARY BATTERY, AND VEHICLE
    • DIAGNOSEGERÄTDIAGNOSEVERFAHRENFÜRSEKUNDÄREBATTERIE UND FAHRZEUG
    • EP2573578A1
    • 2013-03-27
    • EP10851777.2
    • 2010-05-21
    • TOYOTA JIDOSHA KABUSHIKI KAISHA
    • MANO, RyoISHISHITA, TeruoMATSUMOTO, JunichiTEZUKA, Takayoshi
    • G01R31/36
    • G01R31/3606B60L11/1857G01R31/3679G06F17/00H01M10/425H01M10/441H01M10/48H01M10/482H01M10/486H01M2220/20H02J7/0021Y02T10/7011Y02T10/705Y02T10/7055
    • A diagnostic device diagnoses a rechargeable lithium ion battery that is configured of a plurality of battery blocks connected in series for a degraded state attributed to metallic lithium deposited therein. If a condition is established for starting a diagnosis, the diagnostic device starts discharging the battery, and after each battery block has a voltage (Vb) decreased to a measurement starting voltage (Vs) until the block has the voltage (Vb) decreased to a measurement ending voltage (Ve) the block discharges an amount (Q) of power, which the diagnostic device calculates for the battery block. If all blocks each discharge power in an amount (Q) larger than a brand-new product threshold value (A1) the diagnostic device determines that the battery is in a brand new condition. If all blocks each discharge power in an amount (Q) larger than a uselessness threshold value (A2) the diagnostic device determines that the battery is useful. If at least one block discharges power in an amount (Q) smaller than the uselessness threshold value (A2) the diagnostic device determines that the battery is useless.
    • 诊断装置诊断由串联连接的多个电池块构成的可再充电锂离子电池,用于归因于其中沉积的金属锂的劣化状态。 如果建立用于开始诊断的条件,则诊断装置开始对电池进行放电,并且在每个电池块的电压(Vb)降低到测量开始电压(Vs)之后,直到电阻(Vb)降低到 测量结束电压(Ve),该块排出诊断装置针对电池块计算的功率量(Q)。 如果所有块都放电量大于全新产品阈值(A1)的量(Q),则诊断装置确定电池处于全新状态。 如果所有块都以大于无用阈值(A2)的量(Q)进行放电,则诊断装置确定电池是有用的。 如果至少一个块以比无用阈值(A2)小的量(Q)放电,则诊断装置确定电池是无用的。
    • 10. 发明公开
    • SECONDARY BATTERY CONTROL DEVICE AND METHOD
    • STEUERUNGSVORRICHTUNG UNDERVERHRENFÜREINESEKUNDÄRBATTERIE
    • EP2767841A1
    • 2014-08-20
    • EP11874084.4
    • 2011-10-13
    • TOYOTA JIDOSHA KABUSHIKI KAISHA
    • KIMURA, MasaruMANO, Ryo
    • G01R31/36
    • G01R31/3624G01R31/361G01R31/362G01R31/3651
    • From time (t1) at which an IG switch is turned off, charging/discharging of a secondary battery is stopped. Polarization cancellation time (Tr) required for cancelling polarization after stopping charging/discharging is changed in accordance with a temperature of the secondary battery. Until an elapse of a predetermined time corresponding to polarization cancellation time (Tr) from the time of turning off the IG switch, the battery voltage is detected cyclically, and an open circuit voltage is sequentially estimated in the equilibrium state in which the polarization is cancelled based on a shift of the battery voltage. In a case where the IG switch is turned on after an elapse of the predetermined time from the time of turning off the IG switch, a detection value of the battery voltage at the time of IG-on is assumed to be the open circuit voltage, and then the SOC at the time of starting use of the secondary battery is estimated. In a case where the IG switch is turned on before an elapse of the predetermined time from the time of turning off the IG switch, the estimated value of the opening circuit voltage at that time point is regarded as the open circuit voltage, and the SOC at the time of starting use of the secondary battery is estimated.
    • 从IG开关关闭的时间(t1)开始,二次电池的充放电停止。 根据二次电池的温度来改变在停止充电/放电之后取消极化所需的极化消除时间(Tr)。 直到从关闭IG开关的时刻起对应于偏振消除时间(Tr)的预定时间过去,循环检测电池电压,并且在偏振被取消的平衡状态下顺序地估计开路电压 基于电池电压的偏移。 在从关闭IG开关起经过预定​​时间之后,IG开关被接通的情况下,假定IG-on时的电池电压的检测值为开路电压, 然后估计开​​始使用二次电池时的SOC。 在从开关IG开关起经过预定​​时间之后,IG开关导通的情况下,将该时刻的开路电压的推定值作为开路电压,将SOC 在开始使用二次电池时估计。