储能科学与技术 ›› 2020, Vol. 9 ›› Issue (3): 993-1000.doi: 10.19799/j.cnki.2095-4239.2019.0212

• 储能测试与评价 • 上一篇    下一篇

811型动力电池内部温度及生热特性测试与分析

胡峰, 王海民(), 陈思   

  1. 上海理工大学能源与动力工程学院,上海 200093
  • 收稿日期:2019-09-23 修回日期:2019-11-04 出版日期:2020-05-05 发布日期:2019-11-28
  • 通讯作者: 王海民 E-mail:hmwang@usst.edu.cn
  • 作者简介:胡峰(1994—),男,硕士研究生,研究方向为动力电池热特性分析,E-mail:RChufeng@163.com;
  • 基金资助:
    国家重点研发计划项目(2018YFB0104400)

Test and analysis of internal temperature and heat generation characteristics of 811 type power battery

HU Feng, WANG Haimin(), CHEN Si   

  1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2019-09-23 Revised:2019-11-04 Online:2020-05-05 Published:2019-11-28
  • Contact: Haimin WANG E-mail:hmwang@usst.edu.cn

摘要:

以外形结构为21700型的811型三元动力电池单体为研究对象,将其低温冷却处理后在单体负极底壳处进行局部破拆,在电池内部中心布置热电偶,在电池外表面布置薄膜式热流传感器,利用热流密度及内部温度等参数量化计算不同环境温度下电池的放电生热率。结果表明,电池在低温环境中放电时,电池会产生更多的热量从而降低电池的电能输出效率。由电池放电总生热率的分配比例计算结果可知,电池放电时生热量的主要部分将储存于电池内部。

关键词: 动力电池, 热流测试, 温度场, 生热率, 内置热电偶, 环境温度

Abstract:

The 811 type ternary power battery cell with 21700 shape structure is taken as the research object. After low temperature cooling treatment, it is partially dismantled at the bottom of the single anode, and a thermocouple is arranged in the center of the battery to be arranged on the outer surface of the battery. The film type heat flow sensor quantifies the discharge heat generation rate of the battery at different ambient temperatures by using parameters such as heat flux density and internal temperature. The results show that when the battery is discharged in a low temperature environment, the battery will generate more heat and reduce the power output efficiency of the battery. It is known from the calculation result of the distribution ratio of the total heat generation rate of the battery discharge that a major portion of the heat generation when the battery is discharged is stored inside the battery.

Key words: power battery, heat flow test, temperature field, heat generation rate, built-in thermocouple

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