储能科学与技术 ›› 2019, Vol. 8 ›› Issue (5): 862-867.doi: 10.12028/j.issn.2095-4239.2019.0049

• 研究开发 • 上一篇    下一篇

锂电池容量测量不确定度评定与等效模型验证方法

周頔1,2, 卢文斌2, 付平1   

  1. 1 哈尔滨工业大学自动化测试与控制研究所, 黑龙江 哈尔滨 150006;
    2 深圳市计量质量检测研究院, 广东 深圳 518005
  • 收稿日期:2019-04-03 修回日期:2019-04-25 出版日期:2019-09-01 发布日期:2019-09-01
  • 通讯作者: 周頔(1983-),男,高级工程师,从事储能技术研究,E-mail:zhoudi@smq.com.cn。
  • 作者简介:周頔(1983-),男,高级工程师,从事储能技术研究,E-mail:zhoudi@smq.com.cn。
  • 基金资助:
    深圳市技术攻关项目（JSGG20170824094640025）。

Evaluation of uncertainty of lithium battery capacity measurement and equivalent model validation method

ZHOU Di1,2, LU Wenbin2, FU Ping1   

  1. 1 Institute of Automation Testing and Control, Harbin Institute of Technology, Harbin 150006, Heilongjiang, China;
    2 Shenzhen Metrology Quality Testing Institute, Shenzhen 518005, Guangdong, China
  • Received:2019-04-03 Revised:2019-04-25 Online:2019-09-01 Published:2019-09-01

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摘要： 锂电池容量是评估电池健康状态的主要参数，但由于电池容量溯源体系还没有建立，无法明确容量测量精度。本文在理解电池充放电原理的基础上，建立电池容量测量不确定度模型，定量分析影响电池容量测量的因素，提出基于不确定度分析优化锂电池等效电路模型的修正方法，通过实际测量的充电工作电压、容量与模型计算的电压、容量相比较，判断模型计算值是否在实际测量值的不确定度结果范围内，尽量避免由于实际测量偏差造成的模型可靠性的降低。

关键词: 锂电池容量, 不确定度评定, 等效模型验证

Abstract: The capacity of lithium battery is the main parameter to evaluate the health status of the battery, but since the battery capacity traceability system has not been established. Based on understanding the principle of battery charging and discharging and a battery capacity measurement uncertainty model, quantitative analysis of the factors that influence the battery capacity measurement is analyzed quantitatively based on the uncertainty analysis of optimization of lithium battery equivalent circuit model modification method. Through the actual measurement of charging voltage, capacity, compared with the model calculation of the voltage, capacity, it is judged whether the calculation value is within the uncertainty of the actual measurement, and avoid the lower reliability of the model caused by actual measurement deviation.

Key words: lithium battery capacity, evaluation of uncertainty, equivalent model validation

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