发明名称 |
METHOD AND DEVICE FOR DETERMINING A CHARGE STATE OF AN ELECTRIC ENERGY STORE |
摘要 |
A method for determining a charge state of an electric energy store, having the following steps: measuring a voltage of the electric energy store on the basis of a charge quantity which is removed from or supplied to the electric energy store as a voltage characteristic curve and ascertaining a virtual open-circuit voltage characteristic curve from the measured voltage using at least one operating parameter of the electric energy store, ascertaining a first derivative and/or a second derivative of the virtual open-circuit voltage characteristic curve according to the charge quantity removed from or supplied to the electric energy store, detecting at least one characteristic of the first derivative and/or the second derivative of the virtual open-circuit voltage characteristic curve, and determining the charge state of the electric energy store using the detected at least one characteristic, is provided. |
申请公布号 |
EP2783228(A1) |
申请公布日期 |
2014.10.01 |
申请号 |
EP20120818505 |
申请日期 |
2012.12.21 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
HAHN, ALEXANDER;RABBERS, JACOB, JOHAN;WEYDANZ, WOLFGANG;WOLFSCHMIDT, HOLGER |
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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主权项 |
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地址 |
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