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不同正极材料的大容量锂离子电池热失控实验研究

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为探究不同正极材料大容量锂离子电池的热失控特性,针对不同荷电状态(SOC)下相同容量的不同正极材料大容量 52 Ah磷酸铁锂电池(LFP)和 53 Ah三元锂离子电池(NCM)的热失控进行实验,通过热失控行为、热失控特征参数等参数对比二者的宏观行为与特征.实验结果表明:NCM热失控比LFP更剧烈;SOC越大,NCM与LFP更易发生热失控且热失控更剧烈,NCM热失控对SOC的变化更敏感.
Experimental Study on Thermal Runaway of High-capacity Lithium-ion Batteries with Different Anode Materials
In order to investigate the thermal runaway characteristics of the high-capacity lithium-ion batteries with different anode materials,experiment has been conducted on the thermal runaway of high-capacity 52 Ah lithium iron phosphate battery(LFP)and 53 Ah nickel-cobalt-manganese lithium-ion battery(NCM)with the same capacity and with different anode materials in different states of charge(SOC),and the macroscopic behaviors and characteristics of the two batteries are compared by examining the parameters such as thermal runaway behavior and thermal runaway characteristic parameter.As the experiment results indicate:the thermal runaway of NCM is more intense than that of LFP;greater SOC means NCM and LFP are more susceptible to thermal runaway and the thermal runaway is more intense;the thermal runaway of NCM is more sensitive to the change of SOC.

lithium-ion batterylithium iron phosphate batterynickel-cobalt-manganese lithium-ion batterythermal runawaystate of chargecharacteristic parametertemperature riseanode material

张军、韩路豪、王子阳、姚斌

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合肥市消防救援支队,合肥市 230001

中国科学技术大学火灾科学国家重点实验室,合肥市 230026

锂离子电池 磷酸铁锂电池 三元锂离子电池 热失控 荷电状态 特征参数 温升 正极材料

2024

建筑电气
中国建筑西南设计研究院 中国建筑学会建筑电气分会 全国建筑电气设计技术协作及情报交流网

建筑电气

影响因子:0.56
ISSN:1003-8493
年,卷(期):2024.43(2)
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