The uniformity of temperature distribution is the key factor in heat transfer rate of battery thermal management. In this paper, the battery thermal management using phase change material based on temperature equilibrium strategy have been proposed, in order to get the temperature distribution of battery more uniform. The effects of equilibrium strategy and Rayleigh number are studied. When the Rayleigh numbers are 2.9 × 10⁴, 1.2 × 10⁵, 1.1 × 10⁶, and 4.9 × 10⁸, the temperature SDs applying the equilibrium strategy are reduced by −1.9%, 1.2%, 32.3%, and 14.4%, respectively. Besides, the corresponding complete melting times are reduced by 0.97%, 1.96%, 4.76%, and 1.58%. The equilibrium factor in equilibrium strategy is considered as well. It is noted that increasing the equilibrium factor is able to get the more uniform temperature distribution, resulting in the faster melting rate. When the equilibrium factors are 1, 4, and 6, the complete melting times are reduced by 1.58%, 50.0%, and 51.4%, respectively, improving the thermal performance of battery thermal management.

中文翻译：

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研究温度平衡策略在使用相变材料的电池热管理中的作用

温度分布的均匀性是影响电池热管理传热速率的关键因素。本文提出了基于温度平衡策略的相变材料对电池的热管理，以使电池的温度分布更加均匀。研究了平衡策略和瑞利数的影响。当瑞利数是2.9×10 ⁴，1.2×10 ⁵，1.1×10 ⁶和4.9×10 ⁸，采用平衡策略的温度SD分别降低了-1.9％，1.2％，32.3％和14.4％。此外，相应的完全熔化时间分别减少了0.97％，1.96％，4.76％和1.58％。还应考虑平衡策略中的平衡因素。注意，增加平衡因子能够获得更均匀的温度分布，从而导致更快的熔化速度。当平衡因子为1、4和6时，完全熔化时间分别减少了1.58％，50.0％和51.4％，从而改善了电池热管理的热性能。