Heat dissipation analysis of different flow path for parallel liquid cooling battery thermal management system,International Journal of Energy Research

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Heat dissipation analysis of different flow path for parallel liquid cooling battery thermal management system
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-03-26 , DOI: 10.1002/er.5089
Yi Yang ₁ , Wenchao Li ₁ , Xiaoming Xu ₁ , Guangyao Tong ₁

Affiliation

As the main form of energy storage for new energy automobile, the performance of lithium‐ion battery directly restricts the power, economy, and safety of new energy automobile. The heat‐related problem of the battery is a key factor in determining its performance, safety, longevity, and cost. In this paper, parallel liquid cooling battery thermal management system with different flow path is designed through changing the position of the coolant inlet and outlet, and the influence of flow path on heat dissipation performance of battery thermal management system is studied. The results and analysis show that when the inlet and the outlet are located in the middle of the first collecting main and the second collecting main, respectively; system can achieve best heat dissipation performance, the highest temperature decrease by 0.49°C, while the maximum temperature difference of system decreases by 0.52°C compared with typical Z‐type BTMS under the discharge rate of 1 C. Then an optimization strategy is put forward to improve cooling efficiency compared with single‐inlet and single‐outlet symmetrical liquid cooling BTMS; the highest temperature of three‐inlet and three‐outlet is 27.98°C while the maximum temperature difference of three‐inlet and three‐outlet is 2.69°C, decrease by 0.7 and 0.67°C, respectively.

中文翻译：

并联液冷电池热管理系统不同流路的散热分析

锂离子电池作为新能源汽车储能的主要形式，其性能直接制约着新能源汽车的动力，经济性和安全性。电池的热相关问题是决定其性能，安全性，寿命和成本的关键因素。通过改变冷却液进出口的位置，设计了不同流路的并联液冷电池热管理系统，研究了流路对电池热管理系统散热性能的影响。结果与分析表明，进，出口分别位于第一集管和第二集管的中间。系统可实现最佳散热性能，最高温度降低0.49°C，在1 C的排放速率下，与典型的Z型BTMS相比，系统的最大温差降低了0.52°C。然后提出了一种优化策略，与单入口和单出口对称液体冷却相比，提高了冷却效率BTMS; 三进三出的最高温度为27.98°C，三进三出的最大温差为2.69°C，分别降低0.7和0.67°C。

更新日期：2020-03-26

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