调峰和调频工况下磷酸铁锂电池组的冷却研究
Study on cooling of Lithium iron phosphate battery under peak shaving and frequency modulation conditions
郭鹏宇 1王铭民 1许栋栋 1郭东亮2
作者信息
- 1. 国网江苏省电力有限公司,南京 210024
- 2. 国网江苏省电力有限公司电力科学研究院,南京 211103
- 折叠
摘要
本文对储能电池在调峰和调频工况下的风冷和液冷冷却技术进行研究.采用有限元技术建立了实际调峰和调频工况下电池的热模型,并进行仿真分析;通过现场真实测量温度验证了模型的正确性;在搭建的产热模型上进一步仿真,分别进行风冷和液冷定量模拟.结果表明:调峰调频运行工况下电池温度升高明显,室温下,调频工况下仿真最后温度升高到30.8℃,调峰工况下仿真最后温度升高到36.8℃;采用的风冷液冷两种冷却方案均可在一定程度上改善电池组冷却状态,但冷却效果差异较大,风冷可使最终温度下降2℃左右,而液冷温度控制效果更好,但经济性较差,可在实际工况中结合现场情况灵活使用.
Abstract
The air cooling and liquid cooling technologies for energy storage batteries under peak shaving and frequency reg-ulation conditions was studied.A thermal model of the battery under actual peak shaving and frequency modulation conditions was established using finite element technology,and simulation analysis was conducted;The correctness of the model was verified through on-site temperature measurements;Further simulation was conducted on the constructed heat generation model,with both air-cooled and liquid cooled quantitative simulations conducted separately.The results show that the battery temperature increases significantly under peak shaving and frequency regulation operating conditions.At room temperature,the simulated fi-nal temperature increases to 30.8℃ under frequency regulation operating conditions,and the simulated final temperature increa-ses to 36.8℃ under peak shaving operating conditions;The two cooling schemes of air cooling and liquid cooling can improve the cooling state of the battery pack to a certain extent,but there is a significant difference in cooling effect.Air cooling can re-duce the final temperature by about 2 ℃,while liquid cooling has better temperature control effect,but its economy is poor.It can be flexibly used in practical working conditions combined with on-site conditions.
关键词
锂离子电池/调峰调频/风冷/液冷/有限元仿真Key words
Lithium ion batteries/Peak shaving and frequency modulation/Air cooling/Liquid cooling/Finite element sim-ulation引用本文复制引用
基金项目
国家自然科学基金(51577050)
国家电网江苏省电力公司科技项目(J2022158)
出版年
2024
NETL
NSTL
万方数据