发明名称 |
SECONDARY-BATTERY MONITORING DEVICE AND PREDICTION METHOD OF BATTERY CAPACITY OF SECONDARY BATTERY |
摘要 |
A secondary-battery monitoring device includes: a use-state memory device that stores a transition of a load parameter indicating a use state of a secondary battery; and a battery capacity prediction device that predicts a temporal change of a battery capacity of the secondary battery on the basis of a prediction function. The prediction function is derived from a relation between growth of a film formed in an electrode surface of the secondary battery and a reduction of a precursor component of the film which is contained in an electrolyte of the secondary battery. The battery capacity prediction device determines a coefficient of the prediction function on the basis of the transition of the load parameter which is stored in the use-state memory device, and predicts the temporal change of the battery capacity of the secondary battery on the basis of the prediction function which uses the coefficient. |
申请公布号 |
US2017082694(A1) |
申请公布日期 |
2017.03.23 |
申请号 |
US201515310586 |
申请日期 |
2015.04.28 |
申请人 |
HITACHI AUTOMOTIVE SYSTEMS, LTD. |
发明人 |
YONEMOTO Masahiro;KAWAHARA Youhei;INOUE Takeshi;OHKAWA Keiichiro |
分类号 |
G01R31/36;H01M10/48;H01M10/42 |
主分类号 |
G01R31/36 |
代理机构 |
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代理人 |
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主权项 |
1. A secondary-battery monitoring device, comprising:
a use-state memory device that stores a transition of a load parameter indicating a use state of a secondary battery; and a battery capacity prediction device that predicts a temporal change of a battery capacity of the secondary battery on the basis of a prediction function, wherein the prediction function is a function derived from a relation between a growth of a film which is formed in an electrode surface of the secondary battery, and a reduction of a precursor component of the film which is contained in an electrolyte of the secondary battery, and wherein the battery capacity prediction device determines a coefficient of the prediction function on the basis of the transition of the load parameter which is stored in the use-state memory device, and predicts the temporal change of the battery capacity of the secondary battery on the basis of the prediction function which uses the coefficient. |
地址 |
Ibaraki JP |