发明名称 |
METHOD FOR DETERMINING STATE OF CHARGE OF A BATTERY BY MEASURING ITS OPEN CIRCUIT VOLTAGE |
摘要 |
<p>A method for determining the state of charge (SOC) of a battery by measuring its open circuit voltage (OCV) either with the battery in a fully rested state of chemical and electrical equilibrium or an active state during a period in which the battery settles after charge or discharge is stopped. A first type algorithm is developed to correlate the OCV in a fully rested condition (OCVREST) to the state of charge at which that measurement is taken. A second type algorithm is developed that predicts a final settling OCV of a battery (OCVPRED), based on the set of parameters of OCV, rate of change of OCV, and battery case temperature, acquired during the settling period of a battery not at rest. To determine the SOC of a battery being tested that is in the fully settled state the measured OCVREST is applied to the first type algorithm. To determine the SOC of a battery that has not fully settled, the data of the OCV, rate of change of OCV and battery temperature is applied to a second type algorithm to determine OCVPRED and the OCVPRED value is used in the first type algorithm to determine SOC.</p> |
申请公布号 |
EP1384086(B1) |
申请公布日期 |
2014.12.03 |
申请号 |
EP20020709505 |
申请日期 |
2002.02.14 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
HOENING, STEVEN;PALANISAMY, THIRUMALAI, G.;SINGH, HARMOHAN |
分类号 |
H02J7/00;G01R31/36;H01M10/48 |
主分类号 |
H02J7/00 |
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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