The liquid-cooled thermal management
system based on a flat heat
pipe has a good thermal management effect on a single battery pack,
and this article further applies it to a power battery system to verify
the thermal management effect. The effects of different discharge
rates, different coolant flow rates, and different coolant inlet temperatures
on the temperature distribution uniformity of the power battery system
were analyzed, and the effectiveness of the flat heat pipe in improving
the thermal equilibrium performance of the liquid-cooled thermal management
system was verified.
Summary
A thermal management system with the capability of achieving excellent heat dissipation is essential to the development of battery pack for transportation devices. To meet the temperature uniformity requirements of the battery pack, the plate flat heat pipe and liquid‐cooled coupled multistage heat dissipation system had been introduced. In this article, the research status of thermal management systems in battery pack was introduced. And the heat generation and heating power of the Li‐ion cell were studied. Then, the structure model of plate flat heat pipe system was proposed. Finally, the enhanced heat conduction effect of the thermal management system proposed in this article was comprehensively analyzed. Through the analysis of the results, in high discharge rates, the thermal management system proposed in this article could meet the temperature uniformity requirements of battery pack; also, the internal difference would reduce by 30.20%.
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