【摘要】 电池组热管理可以保证电池在一个合适的温度区间内放电,提出了一种使用鼓风机控制电池组内空气往复的风冷散热结构。通过增设电流控制条件判断是否开启双向鼓风机交替工作;温差控制条件控制鼓风机周期性启动间隔时间。基于FLUENT软件对锂离子电池组在恒流放电下进行了温度场仿真,结果表明:与传统的风冷模型相比,使用本风冷散热后电池温度分布均匀,电池组整体温度保持在25～45℃,最大温差保持在指定温度,保证电池处于最佳工作温度范围内。更多还原

【Abstract】 Thermal management of batteries can ensure discharge of batteries in a suitable temperature range. This paper presented an air-cooled heat dissipation structure using blower to control air reciprocating in batteries. The current control condition was added to judge whether to open two-way blower alternately; temperature difference control condition was used to control blower periodic start-up interval time. Based on FLUENT software, the temperature field of lithium ion battery was simulated under constant current discharge. The results show that compared with the traditional air-cooled model, the temperature distribution of the battery is uniform and the whole temperature of the battery can keep at 25-45 ℃. The maximum temperature difference remains at the specified temperature to ensure that the battery is in the optimal operating temperature range.更多还原