锂电池热管理系统综合性能对电池的容量和运行寿命至关重要，为了改善锂电池成包后热管理系统的综合性能，提出一种基于双流道特斯拉阀的液冷板冷却结构。首先采用数值模拟的方式，对比液冷板冷却液同侧出入口和不同侧出入口的综合性能，并将双流道特斯拉阀与原始特斯拉阀以及直流道进行综合性能对比，然后使用正交试验法筛选出对双流道特斯拉阀逆流综合性能影响较大的四个参数，以此为设计变量建立与目标函数之间的Kriging响应模型，最后对其采用第二代非支配排序遗传算法(NSGA-Ⅱ)进行多目标寻优。研究表明，不同侧出入口液冷板综合性能更优；对比直流道，双流道特斯拉阀冷板结构在逆流情况下电池最高温度(Tmax)下降了0.67℃，并且其顺流时流道压降(Δp)比原始特斯拉阀和直流道分别低了117.67Pa和437.39Pa；与初始双流道特斯拉阀相比，优化后的双流道特斯拉阀流道对应的ΔT和Δp分别降低了1.52%和11.16%，并且综合性能(CTPF)提升了4.81%，效果显著。该研究为动力电池冷却流道的结构设计和优化提供借鉴。

The comprehensive performance of the lithium battery thermal management system is very important to the capacity and operating life of the battery. In order to improve the comprehensive performance of the lithium battery thermal management system after packaging, a new liquid cooling plate cooling structure based on a double-channel tesla valve is proposed. Firstly, the comprehensive performance of the same side outlet and different side outlet of the liquid cooling plate coolant is compared by numerical simulation, and the comprehensive performance of the double-channel tesla valve is compared with the original tesla valve and the DC channel. Then the orthogonal test method is used to screen out four parameters that have a greater impact on the comprehensive performance of the double-channel tesla valve. The Kriging response model between the design variable and the objective function is established, and the second generation non-dominated sorting genetic algorithm (NSGA-Ⅱ) is used for multi-objective optimization. The results show that the comprehensive performance of the liquid cooled plate with different side inlet and outlet is better. Compared with the DC channel, the maximum battery temperature (Tmax) of the double-channel tesla valve cold plate structure is reduced by 0.67℃ in the countercurrent condition, and the flow channel pressure drop (Δp) is 117.67Pa and 437.39Pa lower than that of the original tesla valve and the DC channel. Compared with the initial double-channel tesla valve, the optimized new tesla valve flow channels corresponding to ΔT and Δp are reduced by 1.52% and 11.16%, respectively, and the overall performance (CTPF) is improved by 4.81%. This study provides a reference for the structural design and optimization of power battery cooling runner.

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