聚合物锂离子电池大倍率放电温度场分析

郝文广; 王建平; 王志强; 滕晓东; 赵自强

doi:10.11993/j.issn.1673-1948.2013.05.009

聚合物锂离子电池大倍率放电温度场分析

doi: 10.11993/j.issn.1673-1948.2013.05.009

中国船舶重工集团公司第705研究所昆明分部, 云南昆明, 650118

详细信息

作者简介:
郝文广(1987-), 男, 在读硕士, 主要研究方向为动力型锂离子电池组大倍率放电发热分析.

中图分类号: TJ630.32; TM912.9
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- 被引次数: 0
出版历程
- 收稿日期: 2013-04-16
- 修回日期: 2013-05-22
- 刊出日期: 2013-10-20

Analysis of Temperature Field of Polymer Lithium-ion Battery under Discharge of High-ratio-current

Kunming Branch of the 705 Research Institute, China Shipbuilding Industry Corporation, Kunming 650118, China

摘要

摘要: 聚合物锂离子电池在大倍率放电时会产生大量的热, 从而影响电池的性能和安全性。利用ANSYS软件在大倍率放电条件下, 对忽略正负极极耳尺寸且导热系数各向同性, 忽略正负极极耳尺寸且导热系数各向异性, 考虑正负极极耳尺寸且导热系数各向异性的3种聚合物锂离子电池模型进行了温度场分析。通过对比分析结果可知, 正负极极耳对电池内部温度场的分布影响很大; 导热系数各向同性的假设条件下分析结果误差较大, 导热系数各向异性的分析更加准确。在对聚合物锂离子电池温度场分析时要综合考虑电池正负极极耳和导热系数各向异性等因素。
- 聚合物锂离子电池 /
- 大倍率放电 /
- 正负极极耳 /
- 导热系数各向同性 /
- 导热系数各向异性
Abstract: Polymer lithium-ion battery produces large amount of heat under discharge of high-ratio-current to influence the function and safety of a battery. We establish three models of the battery and calculate their temperature fields by using the software ANSYS under discharge of high-ratio-current. The three models are established in the conditions of isotropic thermal conductivity without considering the sizes of positive and negative electrodes, of anisotropic thermal conductivity without considering the sizes of positive and negative electrodes, and of anisotropic thermal conductivity considering the sizes of positive and negative electrodes, respectively. Conclusions are drawn that the sizes of positive and negative electrodes of a battery have great influence on the distribution of temperature field; the errors in the as-sumption of isotropic thermal conductivity are larger than the ones in the assumption of anisotropic thermal conductivity. Therefore, analysis of the temperature fields of polymer lithium-ion battery must comprehensively consider the sizes of positive and negative electrodes and the anisotropy of thermal conductivity.
- polymer lithium-ion battery /
- high-ratio-current discharge /
- positive and negative electrodes /
- isotropic thermal conductivity /
- anisotropic thermal conductivity

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