储能科学与技术 ›› 2018, Vol. 7 ›› Issue (4): 712-717.doi: 10.12028/j.issn.2095-4239.2018.0003

• 研究及进展 • 上一篇    下一篇

锂离子电池温度变化过程仿真与验证

马龙, 文华   

  1. 南昌大学机电工程学院, 江西 南昌 330031
  • 收稿日期:2018-01-12 修回日期:2018-01-31 出版日期:2018-07-01 发布日期:2018-03-23
  • 通讯作者: 文华,副教授,研究方向为电动汽车电池热管理,E-mail:wenhua25@ncu.edu.cn
  • 作者简介:马龙(1988-),男,硕士研究生,研究方向为锂离子电池热分析,E-mail:ml@email.ncu.edu.cn
  • 基金资助:
    国家自然科学基金项目（51762034）。

Simulation and verification of lithium-ion battery temperature changing process

MA Long, WEN Hua   

  1. School of Mechanical & Electrical Engineering, Nanchang University, Nanchang 330031, Jiangxi, China
  • Received:2018-01-12 Revised:2018-01-31 Online:2018-07-01 Published:2018-03-23
  • About author:2018-03-23

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被引次数

1

摘要： 针对软包锂离子电池放电过程中温度变化过程进行研究，依据电池产热基本理论，通过内阻实验及0.5 C放电倍率下的温升实验计算出瞬态生热率曲线，得出电池熵热系数，建立生热速率随放电深度不断变化的瞬态生热模型，基于该模型进行不同放电倍率的温度仿真模拟，并与实验进行对比。结果表明，温度变化模拟结果与实验相吻合，生热率变化模拟结果与实验计算值相符合，模型可以很好地模拟电池在不同放电倍率下的温度变化，对电池温升过程分析及电池热管理过程控制具有指导意义。

关键词: 锂离子电池, 热特性, 熵热系数, 温度变化

Abstract: To investigate the temperature-variation of the soft package lithium-ion battery during discharge, based on the basic heat generation model, through internal resistance test and temperature rise experiment under 0.5 C discharge, the transient heat rate curve is calculated and entropy coefficient is obtained. A transient thermal model can be established and the heating rate varies with the depth of discharge changing. The temperature variation was simulated by using this model and compared with the experiment. It shows that the simulation results are consistent with the experiment. This model can simulate the battery temperature change process under different discharge ratio very well, which has guiding mean for the battery temperature variation analysis and the thermal management.

Key words: lithium-ion battery, thermal characteristic, entropy coefficient, temperature variation

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