Experimental analysis on lithium iron phosphate battery over-discharged to failure

2019 9th International Conference on Future Environment and Energy

生态环境科学;能源学

Ouyang, Dongxu^1 ; Wang, Jian^1

State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei

230022, China^1

关键词: Battery surface temperatures;    Discharge rates;    Electrical characteristic;    Experimental analysis;    Lithium iron phosphates;    Manganese-cobalt oxides;    Specific information;    Temperature rise;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/257/1/012043/pdf
DOI  :  10.1088/1755-1315/257/1/012043

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, a series of experiments were performed to investigate the thermal and electrical characteristics of a commercial lithium ion battery (LIB) over-discharged to failure. Specific information including voltage, current, capacity and battery surface temperature were measured and analyzed. According to the results, it is demonstrated that batteries behave obvious temperature rise during the over-discharge process and the temperature rise increase with the increasing charge rate. Besides, the LFP (lithium iron phosphate) exhibits gentler temperature rise than the NMC (nickel manganese cobalt oxide) battery in the over-discharge process. And the discharge rate is found there no huge effect on the lost capacity of battery when it is over-discharged to failure.