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    • 1. 发明授权
    • Degradation measurement device, secondary battery pack, degradation measurement method, and program
    • 降解测量装置,二次电池组,劣化测量方法和程序
    • US09366728B2
    • 2016-06-14
    • US14002851
    • 2011-12-28
    • Shin SuzukiYoichiro Tashiro
    • Shin SuzukiYoichiro Tashiro
    • G01N27/416G01R31/36
    • G01R31/3606G01R31/3624G01R31/3658G01R31/3679
    • A battery sensing section measures a voltage across a secondary battery. A current sensing section measures a current flowing through the secondary battery. A control section holds the value of an external impedance present in a discharge path outside the secondary battery, discharges the secondary battery from a first time to a second time at which an integrated discharge capacity based on a measured discharge current becomes equal to a predetermined discharge capacity reference value, calculates the internal impedance present in the secondary battery at the second time based on the measured voltage, calculates the second open voltage at the second time by multiplying the sum of the external impedance and the internal impedance by the measured discharge current, and calculates the recovered capacity of the secondary battery based on the first open voltage at the first time, the second open voltage and the discharge capacity reference value.
    • 电池感测部分测量二次电池两端的电压。 电流检测部分测量流经二次电池的电流。 控制部保持存在于二次电池外部的放电路径中的外部阻抗的值,将二次电池从第一时间排出到第二时间,在该时间,基于测量的放电电流的积分放电容量等于预定的放电 容量基准值,基于测定电压计算第二次存在于二次电池中的内部阻抗,通过将外部阻抗和内部阻抗之和乘以测定的放电电流来计算第二次的第二开路电压, 并且基于第一次的第一开路电压,第二开路电压和放电容量基准值,计算二次电池的恢复容量。
    • 4. 发明申请
    • DEGRADATION MEASUREMENT DEVICE, SECONDARY BATTERY PACK, DEGRADATION MEASUREMENT METHOD, AND PROGRAM
    • 降解测量装置,二次电池组,降解测量方法和程序
    • US20140009164A1
    • 2014-01-09
    • US14002851
    • 2011-12-28
    • Shin SuzukiYoichiro Tashiro
    • Shin SuzukiYoichiro Tashiro
    • G01R31/36
    • G01R31/3606G01R31/3624G01R31/3658G01R31/3679
    • A battery sensing section measures a voltage across a secondary battery. A current sensing section measures a current flowing through the secondary battery. A control section holds the value of an external impedance present in a discharge path outside the secondary battery, discharges the secondary battery from a first time to a second time at which an integrated discharge capacity based on a measured discharge current becomes equal to a predetermined discharge capacity reference value, calculates the internal impedance present in the secondary battery at the second time based on the measured voltage, calculates the second open voltage at the second time by multiplying the sum of the external impedance and the internal impedance by the measured discharge current, and calculates the recovered capacity of the secondary battery based on the first open voltage at the first time, the second open voltage and the discharge capacity reference value.
    • 电池感测部分测量二次电池两端的电压。 电流检测部分测量流经二次电池的电流。 控制部保持存在于二次电池外部的放电路径中的外部阻抗的值,将二次电池从第一时间排出到第二时间,在该时间,基于测量的放电电流的积分放电容量等于预定的放电 容量基准值,基于测定电压计算第二次存在于二次电池中的内部阻抗,通过将外部阻抗和内部阻抗之和乘以测定的放电电流来计算第二次的第二开路电压, 并且基于第一次的第一开路电压,第二开路电压和放电容量基准值,计算二次电池的恢复容量。