Estimation for accumulator loading state of electric vehicle and carrying out method thereof |
Title： |
| Estimation for accumulator loading state of electric vehicle and carrying out method thereof |
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Application Number： |
200410009704 |
Application Date： |
2004/10/25 |
Announcement Date： |
2005/03/30 |
Pub. Date： |
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Publication Number： |
1601295 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G01R 31/36 |
Applicant(s)： |
Tsinghua Univ |
Inventor(s)： |
Wang Junping, Lin Chengtao, Chen Quanshi |
Key Words： |
Estimation, accumulator, loading state, electric vehicle, carrying out method |
Abstract： |
The invention relates to an estimation and implement method of state of charge (SOC) of battery for electric car, belonging to the field of electric car intelligent niformation processing technology. Said method utilizes the state space equation of battery which is formed from battery charge state equation based on ampere-hour metering method and measurement equation of battery load votlage, and uses the improved extended Kalman filtering equation to calculate and obtain the stale of charge of battery. Said invented advantage lies in that it has stronger adaptability, can eliminate initial error of SOC, and can raise the convergence of error or reduce speed, at the same time it can modify the change of SOC resulted frmo self-discharge of battery. Said invention is applicable to SOC estimation of cell monomer, module and battery. |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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