发明名称 |
STATE ESTIMATING DEVICE FOR SECONDARY BATTERY |
摘要 |
A battery state estimating unit estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate and a battery current based on a result of the estimation. A parameter estimating unit obtains a battery current measured by a sensor as well as the charging rate and the battery current estimated by the battery state estimating unit. The parameter estimating unit estimates a capacity deterioration parameter such that a rate of change in difference (estimation error) between a summed value of an actual current and a summed value of an estimated current with respect to the charging rate is minimized. A result obtained by estimating the capacity deterioration parameter is reflected in the battery model by the battery state estimating unit.
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申请公布号 |
US2011161025(A1) |
申请公布日期 |
2011.06.30 |
申请号 |
US200913061008 |
申请日期 |
2009.08.28 |
申请人 |
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
TOMURA SHUJI;UMENO TAKAJI;AMANO YASUSHI;NISHI YUJI;TAKEMOTO TAKESHI;HAGA NOBUYASU;FUCHIMOTO TETSUYA |
分类号 |
G01R31/36 |
主分类号 |
G01R31/36 |
代理机构 |
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代理人 |
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地址 |
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