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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