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    • 58. 发明授权
    • Inspection apparatus and inspection method for lithium ion secondary battery, and secondary battery module
    • 锂离子二次电池和二次电池模块的检查装置和检查方法
    • US08984943B2
    • 2015-03-24
    • US13488884
    • 2012-06-05
    • Tsunenori Yamamoto
    • Tsunenori Yamamoto
    • G01R31/36G01N29/14
    • G01N29/14G01N2291/2697
    • The present invention provides an inspection method for a lithium ion secondary battery in which an electrolyte and an electrode group are disposed in one container, the electrode group including a positive electrode, a negative electrode, and a separator, wherein a sensor for detecting acoustic emission is attached to the outside of the container and acoustic emission generated in the battery container is detected upon provision of charge or discharge current and stopping of provision thereof between the positive electrode and the negative electrode. Specifically, the amplitude intensity of the acoustic emission is measured that is generated upon provision of charge-discharge currents having different values, linear approximation is conducted for the charge-discharge current value and the amplitude intensity of the acoustic emission, and the number of times of charge-discharge cycles that has been provided so far to the battery is estimated.
    • 本发明提供一种锂离子二次电池的检查方法,其中电解质和电极组设置在一个容器中,该电极组包括正极,负极和隔板,其中用于检测声发射的传感器 附着在容器的外部,并且在提供充电或放电电流并且在正极和负极之间停止其提供时检测在电池容器中产生的声发射。 具体地说,测量在发出具有不同值的充放电电流时产生的声发射的振幅强度,对充放电电流值和声发射的振幅强度进行线性近似, 估计到目前为止已经提供给电池的充放电循环。