发明名称 |
Method and apparatus for estimating terminal voltage of battery, method and apparatus for computing open circuit voltage of battery, and method and apparatus for computing battery capacity |
摘要 |
A method and an apparatus for computing a charging state of a battery without being affected by an influence of polarization are provided. First computing means computes a voltage-current characteristic including the influence of the polarization during an decrease of a discharge current of the battery on the basis of a terminal voltage and discharge current measured while the battery carries out a constant load discharge with a current value large enough to cancel a charge-side polarization arisen in the battery at least just before the discharge. A second computing means shifts the voltage-current characteristic to a specific extent in the direction of a voltage coordinate axis. A residual voltage drop value in advance stored by storing means is added to a present estimated voltage value estimated by estimating means on the basis of the shifted voltage-current characteristic, thereby a present open circuit voltage of the battery is computed.
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申请公布号 |
US2002145430(A1) |
申请公布日期 |
2002.10.10 |
申请号 |
US20020080278 |
申请日期 |
2002.02.22 |
申请人 |
ARAI YOUICHI;KAMOHARA HIDEAKI;ENOMOTO MICHITO;KAWAGUCHI TOMOHIRO |
发明人 |
ARAI YOUICHI;KAMOHARA HIDEAKI;ENOMOTO MICHITO;KAWAGUCHI TOMOHIRO |
分类号 |
B60K6/22;B60K6/28;B60K6/485;B60W10/26;G01R31/36;(IPC1-7):G01N27/416 |
主分类号 |
B60K6/22 |
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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