Experimental investigation on the effects of natural convection on cylindrical LiFePO4 battery module for energy storage application

Energy Storage Pub Date : 2024-06-19 DOI:10.1002/est2.663
Jayapradha P., Debabrata Barik
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引用次数: 0

Abstract

The experiments with a LiFePO4 battery pack operating at room temperature and with various charge and discharge rates to analyze its durability are described in this study. At a temperature of 23°C with natural convection, the thermal performance of a cylindrical (LFP) battery is experimentally studied. In this study, the battery is fully charged. After reaching 14.6 V, the battery is charged at a current of 4.8 A for 10 min to allow for stabilization. The battery is then depleted at 4.8 A until its voltage hits 10.5 V, followed by an additional 10-min resting time. The processes reached their highest and lowest temperatures, respectively, were 29°C and 22°C. The battery is charged for a total of 46.877 Ampere-hours (Ah) during the course of the 10-h operation at a constant current of 4.8 A. Similar to this, a 10-h discharge operation is carried out with a constant current of 4.8 A, yielding a discharge of 47.207 Ah. The processes reached their highest and lowest temperatures, respectively, were 36°C and 24°C. Another possibility is to charge the battery at a steady 24 A until the voltage reaches 14.6 V, then let it rest for 10 min, a further 10-min rest period is added after it is discharged at 24 A until its voltage hits 10.5 V. After 5 h of charging at 24 A, the capacity is 46.958 Ah, and after 5 h and 47.51 min of discharging at 24 A, the capacity is 47 Ah. The processes reached their highest and lowest temperatures, respectively, were 49°C and 33°C.

自然对流对用于储能应用的圆柱形磷酸铁锂电池模块影响的实验研究
本研究介绍了在室温下以各种充放电速率运行的磷酸铁锂电池组的实验,以分析其耐用性。在温度为 23°C 的自然对流条件下,对圆柱形(LFP)电池的热性能进行了实验研究。在本研究中,电池充满电。电池电压达到 14.6 V 后,以 4.8 A 的电流充电 10 分钟,使其趋于稳定。然后以 4.8 A 的电流耗尽电池,直到电压达到 10.5 V,再静置 10 分钟。过程中达到的最高和最低温度分别为 29°C 和 22°C。在以 4.8 安培的恒定电流运行 10 小时的过程中,电池共充电 46.877 安培小时(Ah)。与此类似,以 4.8 安培的恒定电流进行了 10 小时的放电操作,放电量为 47.207 Ah。过程中达到的最高和最低温度分别为 36°C 和 24°C。另一种方法是以稳定的 24 A 电流对电池充电,直到电压达到 14.6 V,然后让其休息 10 分钟,在以 24 A 电流放电后再休息 10 分钟,直到电压达到 10.5 V。在 24 安培下充电 5 小时后,容量为 46.958 Ah,在 24 安培下放电 5 小时 47.51 分钟后,容量为 47 Ah。过程中达到的最高和最低温度分别为 49°C 和 33°C。
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CiteScore
2.90
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