Study on cooling of Lithium iron phosphate battery under peak shaving and frequency modulation conditions
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.
Lithium ion batteriesPeak shaving and frequency modulationAir coolingLiquid coolingFinite element sim-ulation
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