发明名称 |
METHOD FOR BATTERY STATE OF CHARGE ESTIMATION |
摘要 |
A battery management system includes at least one controller programmed to, in response to a battery current becoming approximately zero, output an open-circuit voltage based on a sequence of battery terminal voltages measured during a time interval in which the battery current remains approximately zero and while a charge polarization voltage is decreasing. The open-circuit voltage may be further based on a non-linear regression of the sequence of battery terminal voltages. The non-linear regression may minimize a mean-squared error between the battery terminal voltages and corresponding battery terminal voltage estimates. The at least one controller may command the battery current to zero for the time interval. The battery management system may be included in a vehicle with a traction battery. |
申请公布号 |
US2016059727(A1) |
申请公布日期 |
2016.03.03 |
申请号 |
US201414473286 |
申请日期 |
2014.08.29 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
LEE Tae-Kyung |
分类号 |
B60L11/18;H02J7/00 |
主分类号 |
B60L11/18 |
代理机构 |
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代理人 |
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主权项 |
1. A battery management system comprising:
at least one controller programmed to, in response to a battery current becoming approximately zero, output an open-circuit voltage based on a sequence of battery terminal voltages measured during a time interval in which the battery current remains approximately zero and a charge polarization voltage is decreasing. |
地址 |
Dearborn MI US |