热的
电池(电)
材料科学
调节器
电子设备和系统的热管理
相变材料
冷却液
核工程
汽车工程
热力学
机械工程
工程类
化学
物理
生物化学
功率(物理)
基因
作者
Kaixuan Li,Xiaole Yao,Zhicheng Li,Tongtong Gao,Weijun Zhang,Zhirong Liao,Xing Jü,Chao Xu
标识
DOI:10.1016/j.est.2024.111661
摘要
For battery thermal management, the phase change material (PCM) has demonstrated its advantages as a thermal buffer. In this paper, we proposed a novel thermal regulator that intelligently utilizes the volume changes to modulate heat transfer. The thermal regulator establishes a passive and negative feedback mechanism between the PCM and the cooling system, enabling a consistent and optimal operating battery temperature. This innovation negates the need for sensors or external logic devices, using a resilient valve passively adjusted by PCM volume changes. This in turn modulates coolant flow rate and battery temperature. Its thermal management performance is compared to other configurations like natural cooling, pure PCM, and composite PCM (cPCM). Extended dynamic tests are conducted at different ambient temperatures (Tamb) for evaluation. The results indicate that batteries without thermal regulators fail to operate when Tamb exceeds 30 °C. At Tamb = 35 °C, the thermal regulator with cPCM exhibits repeated switching and effectively keeps the battery temperature lower than 38.13 °C. At Tamb > 40 °C, both thermal regulators active to achieve faster heat dissipation. At 45 °C, the thermal regulator with cPCM successfully reduces the battery temperature to 35.02 °C. Integrating AlN in pure PCM lowers the battery module's peak temperature by 7.94 %. The thermal regulator also diminishes cyclic temperature variances, underlining its potential for enhancing battery thermal management.
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