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软碳负极材料锂电池在储能电站应用研究
Application of soft carbon anode materials in energy storage power station
投稿时间:2018-04-01  修订日期:2018-05-17
DOI:
中文关键词:  软碳负极材料锂电池  基本动态性能  兆瓦时储能电站  一致性
英文关键词:soft carbon anode material lithium battery  basic dynamic performance  megawatt-hour energy storage power station  consistency
基金项目:国家高技术研究发展计划 (863计划)
作者单位E-mail
黄福闯 青岛大学机电工程学院 305131410@qq.com 
张洪信 青岛大学机电工程学院 qduzhx@126.com 
霍炜 青岛大学机电工程学院 qdhuowei@163.com 
赵清海 青岛大学动力集成及储能系统工程技术中心 zqhbit@163.com 
徐方超 青岛大学机电工程学院 1280085739@qq.com 
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中文摘要:
      摘要:通过研究软碳负极材料锂电池的基本动态性能,评价其应用在兆瓦时储能电站的优势。通过分析电池组在充放电过程中的参数一致性,可以提高储能电站的工作性能。利用电化学工作站和兆瓦时级集装箱储能系统,分别对锂离子电池单体和电池组进行实验测试。实验结果表明,单体电池在3C放电时,放电电压可以保持2.5V以上,3C放电容量为37611mAh,放电比率可以达到77.17%。电池充放电内阻相对较小,电池具有较高的充放电效率。电池组在充放电过程中簇电压曲面平滑升降,电池的充入容量均值为50.45Ah,标准差为0.75,放出的容量均值为49.60Ah,标准差为0.82,各单体间温差较小,充放电温度变化一致性良好。因此软碳负极材料锂电池具有优越的充放电性能,满足作为储能电池的设计要求,同时该电池串并联使用时具有良好的一致性可以为后期储能系统的优化提供理论支撑。
英文摘要:
      Abstract:By studying the basic dynamic properties of soft carbon anode material lithium battery, the advantages of applying it to megawatt-hour energy storage power station are evaluated. By analyzing the consistency of the parameters of the battery in the process of charging and discharging, it can provide a theoretical basis for improving the working performance of the stored energy station in the later optimization of the balance circuit. In this paper, electrochemical workstation and megawatt-hour container energy storage system, respectively, lithium-ion battery cells and battery pack for experimental testing. The experimental results show that when the single cell discharges at 3C, the discharge voltage can be kept above 2.5V, and the voltage stability is high. Meanwhile, 3C discharge capacity of 37611mAh, discharge rate can reach 77.17%. Battery charge and discharge resistance is relatively small, the battery has a high charge-discharge efficiency. During the charge-discharge process, the surface of the cluster voltage rises smoothly and smoothly. The average charge capacity of the battery is 50.45Ah, the standard deviation is 0.75, the average discharge capacity is 49.60Ah, the standard deviation is 0.82, and the temperature difference between each unit is small, Charge and discharge temperature consistency is good. Therefore, the soft carbon anode material lithium battery has excellent charge-discharge performance, to meet the design requirements for energy storage batteries, while the battery string parallel connection has good consistency to provide theoretical support for the late storage system optimization.
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