公开(公告)号：US09547046B2

公开(公告)日：2017-01-17

申请号：US14648657

申请日：2013-11-22

Applicant: GS Yuasa International Ltd.

Inventor： Yohei Tao ,  Shigeki Yamate

IPC: G01N27/416 ,  H02J7/00 ,  H02J7/04 ,  G01R31/36 ,  H01M10/052 ,  H01M10/48 ,  H01M4/505 ,  H01M4/525

CPC classification number: G01R31/3679 ,  B60L3/0046 ,  B60L11/1857 ,  B60Y2200/91 ,  B60Y2200/92 ,  B60Y2400/112 ,  G01R31/3627 ,  G01R31/3651 ,  G01R31/3662 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/48 ,  H01M2220/20 ,  H02J7/00 ,  H02J7/0047 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A performance deterioration detecting apparatus detects an initial state of sudden deterioration in performance of an energy storage device as a performance deterioration start state, and includes: a first acquiring unit configured to acquire a first maximum variation amount as a maximum value of a capacity variation amount that is a degree of variation in current carrying capacity relative to variation in voltage of the charged or discharged energy storage device, regarding a capacity-voltage property at a first time point, indicating relation between the capacity variation amount and the voltage; a second acquiring unit configured to acquire a second maximum variation amount as a maximum value of the capacity variation amount regarding the capacity-voltage property at a second time point after the first time point; and a performance deterioration determiner configured to determine that the energy storage device is in the performance deterioration start state at the second time point if a variation amount ratio as a ratio of the second maximum variation amount to the first maximum variation amount exceeds a predetermined value.

Abstract translation: 性能劣化检测装置检测作为性能劣化开始状态的能量存储装置的性能突然劣化的初始状态，并且包括：第一获取单元，被配置为获取第一最大变化量作为容量变化量的最大值 相对于充电或放电能量存储装置的电压变化，载流量相对于第一时刻的容量电压特性的变化程度，表示容量变化量与电压之间的关系; 第二获取单元，被配置为获取第二最大变化量作为与第一时间点之后的第二时间点的电容电压特性相关的容量变化量的最大值; 以及性能劣化确定器，被配置为如果作为所述第二最大变化量与所述第一最大变化量的比率的变化量比超过预定值，则确定所述能量存储装置在所述第二时间点处于所述性能劣化开始状态。