发明名称 |
DETERIORATION DEGREE CALCULATING APPARATUS FOR SECONDARY BATTERY, VEHICLE EQUIPPED WITH THE APPARATUS, AND DETERIORATION DEGREE CALULATING METHOD FOR SECONDARY BATTERY |
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. |
申请公布号 |
EP2482376(A1) |
申请公布日期 |
2012.08.01 |
申请号 |
EP20100790505 |
申请日期 |
2010.04.21 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
HARADA, HIRONORI |
分类号 |
H01M10/48;B60L3/00;B60L11/12;B60L11/14;B60L11/18;G01R31/36 |
主分类号 |
H01M10/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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