首页>
外国专利>
SECONDARY BATTERY DETERIORATION DEGREE COMPUTATION DEVICE, VEHICLE WHEREIN SAME IS INCLUDED, AND SECONDARY BATTERY DETERIORATION DEGREE COMPUTATION METHOD
SECONDARY BATTERY DETERIORATION DEGREE COMPUTATION DEVICE, VEHICLE WHEREIN SAME IS INCLUDED, AND SECONDARY BATTERY DETERIORATION DEGREE COMPUTATION METHOD
展开▼
机译:二次电池劣化度计算装置,包含该二次电池的程度的车辆以及二次电池劣化度计算方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A deterioration degree calculating apparatus for a secondary battery of the invention includes: obtaining a voltage value at a stop time of charge and discharge of a target secondary battery; obtaining a voltage value at a first start time of charge and discharge after that; obtaining an SOC of the target secondary battery at the stop time or at the start time; obtaining a length of an unused period from the stop time to the start time (an elapsed time); obtaining a self-discharge slope of the target secondary battery by dividing an absolute value of a difference between the voltage value at the start time and the voltage value at the stop time by the elapsed time; obtaining a temperature during an unused period by use of a self-discharge map in which the SOC and the self-discharge slope is recorded for each temperature; calculating a progress degree of deterioration of the target secondary battery during the unused period based on the obtained temperature and elapsed time; and accumulating the calculated deterioration progress degree to accurately calculate the deterioration degree of the secondary battery without continuously consuming electric power during the unused period.
展开▼