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题名: A Novel Real-Time State-of-Health and State-of-Charge Co-Estimation Method for LiFePO4 Battery
作者: Qiao, Rong-Xue1; Zhang, Ming-Jian1; Liu, Yi-Dong1; Ren, Wen-Ju1; Lin, Yuan1, 2; Pan, Feng1
刊名: CHINESE PHYSICS LETTERS
发表日期: 2016-07-01
卷: 33, 期:7
收录类别: SCI
英文摘要: The state of charge (SOC) and state of health (SOH) are two of the most important parameters of Li-ion batteries in industrial production and in practical applications. The real-time estimation for these two parameters is crucial to realize a safe and reliable battery application. However, this is a great problem for LiFePO4 batteries due to the large constant potential plateau in the charge/discharge process. Here we propose a combined SOC and SOH co-estimation method based on the experimental test under the simulating electric vehicle working condition. A first-order resistance-capacitance equivalent circuit is used to model the battery cell, and three parameter values, ohmic resistance (R-s), parallel resistance (R-p) and parallel capacity (C-p), are identified from a real-time experimental test. Finally we find that R-p and C-p could be utilized to make a judgement on the SOH. More importantly, the linear relationship between C-p and the SOC is established to make the estimation of the SOC for the first time.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35604
Appears in Collections:光化学实验室_期刊论文

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作者单位: 1.Peking Univ, Sch Adv Mat, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
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