| 基于加速寿命试验的锂离子电池可靠性分析方法 |
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| 引用本文： | 韩子娇,苑舜,马少华,董鹤楠,颜宁,张玫珊.基于加速寿命试验的锂离子电池可靠性分析方法[J].可再生能源,2021(2). |
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| 作者姓名： | 韩子娇 苑舜 马少华 董鹤楠 颜宁 张玫珊 |
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| 作者单位： | 沈阳工业大学电气工程学院;国网辽宁省电力有限公司;国家能源局东北监管局;国网辽宁省电力有限公司电力科学研究院;辽宁送变电工程有限公司 |
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| 基金项目： | 国家电网公司科技项目(2019YF-01)。 |
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| 摘 要： | 为了有效地提高锂离子电池寿命评估的准确性,延长储能系统在配电网中运行年限,文章提出了基于加速寿命试验的锂离子电池可靠性分析方法。综合考虑不同放电深度对锂离子电池寿命影响,建立了锂离子电池的寿命衰退模型;确定了荷电状态(SOC)与健康度(SOH)的关联特性关系;提出了基于逆幂率方程的储能系统加速寿命试验方法;基于情景分析法对锂离子电池的可靠性进行了分析。研究结果表明,文章所提出的试验方法能够准确地对不同运行状态下的锂离子电池储能系统进行可靠性评估,保证储能系统并网运行过程中的调控准确性。
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| 关 键 词： | 锂离子电池 逆幂率模型 加速寿命试验 可靠性 |
Reliability analysis method of Lithium iron phosphate battery based on accelerated life test |
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| Han Zijiao,Yuan Shun,Ma Shaohua,Dong Henan,Yan Ning,Zhang Meishan.Reliability analysis method of Lithium iron phosphate battery based on accelerated life test[J].Renewable Energy,2021(2). |
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| Authors: | Han Zijiao Yuan Shun Ma Shaohua Dong Henan Yan Ning Zhang Meishan |
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| Affiliation: | (School of Electrical Engineering Shenyang University of Technology,Shenyang 110870,China;State Grid Liaoning Electric Power Co.Ltd.,Shenyang 110004,China;Northeast China Energy Regulatory Bureau of National Energy Administration,Shenyang 110006,China;State Grid Liaoning Electric Power Co.Ltd.Electric Power Research Institute,Shenyang 110006,China;Liaoning Province Transmission and Transformation Engineering Co.Ltd.,Shenyang 110022,China) |
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| Abstract: | In order to improve the accuracy of lithium ion battery life assessment effectively,extend the life of the energy storage system in the distribution network.This paper propose a reliability analysis method for a lithium ion battery based on an accelerated life test.Firstly,the effects of different discharge depths and different operating temperatures on the life of lithium-ion batteries are considered,and the life-degradation model of lithium-ion batteries is established.Secondly,the relationship between the state of charge(SOC)and the state of health(SOH)is established.Finally,the storage based on the inverse power law equation is proposed.Reliability analysis scenario analysis for lithium-ion batteries is adopted.The results show that the proposed test method can accurately evaluate the reliability of lithium-ion battery energy storage system under different operating conditions,and the accuracy of regulation of the energy storage system during grid-connected operation is guaranteed. |
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| Keywords: | Lithium iron phosphate battery inverse power model accelerated life test reliability analysis |
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