A Study of Heat Generation Behavior of 18650 Cylindrical Battery

Wang Zi-yuan; Zhang Guo-qing; Gao Guan-yong; Lyu You-fu

doi:10.12052/gdutxb.160057

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A Study of Heat Generation Behavior of 18650 Cylindrical Battery

更新时间：2026-05-27

- A Study of Heat Generation Behavior of 18650 Cylindrical Battery
- Vol. 34, Issue 1, Pages: 45-49(2017)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.160057
  CLC： TK112
- Online First：09 January 2017，
  
  Published：2017
- 稿件说明：
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王子缘, 张国庆, 高冠勇, 吕又付. 18650圆柱形电芯的产热行为研究[J]. 广东工业大学学报, 2017, 34(1): 45-49.

Wang Zi-yuan, Zhang Guo-qing, Gao Guan-yong, et al. A Study of Heat Generation Behavior of 18650 Cylindrical Battery[J]. 2017, 34(1): 45-49.
王子缘, 张国庆, 高冠勇, 吕又付. 18650圆柱形电芯的产热行为研究[J]. 广东工业大学学报, 2017, 34(1): 45-49. DOI： 10.12052/gdutxb.160057.

Wang Zi-yuan, Zhang Guo-qing, Gao Guan-yong, et al. A Study of Heat Generation Behavior of 18650 Cylindrical Battery[J]. 2017, 34(1): 45-49. DOI： 10.12052/gdutxb.160057.

摘要

随着新能源汽车的不断发展，提高动力电池运行时的热安全性倍受关注.通过实验方法测试出18650单体电芯在恒流1 C放电倍率下的电压、电流、温度及时间数据，通过能量守恒估算电芯的理论产热值为3 901.51 J，并且计算出电芯的平均比热容与平均发热功率分别为5.37 J/（gK）与1.08 W.同时采用计算机仿真的方式，模拟出18650电池在1 C恒流放电时的表面/截面温度云图，与实验得出的数据对比并进行验证，实现其最高温度的误差值小于等于1℃，为后续的电动汽车热灾害评估打下理论基础.

Abstract

With the continuous development of new energy vehicles

increasing the thermal safety of the power battery attracts more attention. The data of current

voltage

temperature and time of the 18650 single cell are tested under the constant current 1 C discharge rate

the theoretical calorific value of the cell estimated to be 3 901.51 J based on law of conservation of energy

and the average specific heat and the average heating power is calculated through experimental method to be respectively 5.37 J/(gK) and 1.08 W. At the same time

the surface/section temperature image of the 18650 single cell through 1 C constant current discharge is simulated by the way of computer simulation. Compared with the experimental data and verified

the error of the maximum temperature is less than or equal to 1℃

which lays a theoretical foundation for the follow-up evaluation of the electric vehicle thermal disaster.

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references

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