圆柱形锂离子电池产热以及热电耦合特性

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (6): 65-71.

圆柱形锂离子电池产热以及热电耦合特性

张涛^*1,2, 赵亚兵³, 马力群^1,2

1.兰州兰石换热设备有限责任公司, 甘肃兰州 730314;
2.兰州兰石能源装备工程研究院有限公司, 甘肃兰州 730314;
3.兰州理工大学能源与动力工程学院, 甘肃兰州 730050

收稿日期:2023-09-26 发布日期:2025-12-31
通讯作者: 张涛(1982-),男,甘肃兰州人,高级工程师.Email:zt_lsphe@126.com
基金资助:
甘肃省教育厅产业支撑计划项目(2022CYZC-21),甘肃省重点研发计划-工业类(22YF7GA163)

Research on heat generation and thermoelectric coupling characteristics of cylindrical lithium-ion batteries

ZHANG Tao^1,2, ZHAO Ya-bing³, MA Li-qun^1,2

1. Lanzhou LS Heat Exchange Equipment Co. Ltd., Lanzhou 730314, China;
2. Lanzhou LS Energy Equipment Engineering Research Institute Co. Ltd., Lanzhou 730314, China;
3. College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou730050, China

Received:2023-09-26 Published:2025-12-31

摘要/Abstract

摘要： 磷酸铁锂(LFP)电池和镍钴锰(NCM)三元电池两者因正极材料的不同而呈现不同的特性,同种电极材料的电池因电极结构不同也将表现出不同的电化学以及热行为,探究放电倍率、运行温度等对电池电化学特性及热特性的影响,对比分析磷酸铁锂电池与三元电池、电极厚度不同的电池之间的性能差异.结果表明:三元电池的高倍率放电特性优于磷酸铁锂电池,低温运行性能亦较佳;磷酸铁锂电池和三元电池的产热特性对环境温度的敏感性不同,环境温度的提高对磷酸铁锂电池产热影响相较于三元电池更加明显;电极厚度较厚的电池温升速率比电极厚度较薄的电池更大,而电极厚度较薄的倍率性能优异,放电倍率提高后,电压下降幅度小于电极较厚的电池.

关键词: 锂离子电池, 电极厚度, 倍率性能, 电化学

Abstract: Lithium iron phosphate (LFP) batteries and nickel-cobalt-manganese (NCM) ternary batteries, the two exhibit different characteristics due to the differences in their cathode materials. Batteries with the same type of electrode material may also display diverse electrochemical and thermal behaviors due to different electrode constructions. The study explored the impact of discharge rates, operating temperatures and other factors on the electrochemical and thermal properties of the batteries, and comparatively analyzed the performance differences between LFP batteries and NCM batteries as well as batteries with varying electrode thicknesses. The results indicated that NCM batteries have superior high-rate discharge characteristics and better performance at low operating temperatures than LFP batteries. The heat generation characteristics of LFP and NCM batteries exhibit different sensitivities to ambient temperature, with LFP batteries showing an increase in heat generation as environmental temperature rises compared to NCM batteries. Batteries with thicker electrodes have a faster temperature rise rate than those with thinner electrodes. However, batteries with thinner electrodes exhibit better rate capability, with a smaller voltage drop after discharge rate increase compared to the batteries with thicker electrodes.

Key words: lithium-ion battery, electrode thickness, magnification performance, electrochemical

中图分类号:

TQ152

张涛, 赵亚兵, 马力群. 圆柱形锂离子电池产热以及热电耦合特性[J]. 兰州理工大学学报, 2025, 51(6): 65-71.

ZHANG Tao, ZHAO Ya-bing, MA Li-qun. Research on heat generation and thermoelectric coupling characteristics of cylindrical lithium-ion batteries[J]. Journal of Lanzhou University of Technology, 2025, 51(6): 65-71.

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