关键词: 纯电车型；前舱冷却模块；冷凝器；散热性能；AMESim

Abstract: Restricted by the arrangement of forecabin cooling module and opening area of the grille, the cooling air on the windward of the condenser presents non-uniform velocity and temperature distribution, which may seriously affect its heat dissipation performance. This study takes the forecabin cooling module of battery electric vehicles as the research object, establishes the mathematical models of one and a half/two layers arrangement schemes based on AMESim software, and verifies the accuracy of the conducted model through the theoretical calculation, and reveals the revolution of heat dissipation of condenser with the cooling air parameters on the windward side under the arrangement modes. It is found that for the two layer arrangement scheme, the condenser owns the optimum heat dissipation performance under the condition of uniform air velocity, and that decreases significantly with the increase of air supply volume in the subcooling area; for the one and a half arrangement scheme, when the low-temperature radiator is arranged in the upper/middle/lower part of condenser, the reduction of heat dissipation rate of condenser is 10%, 15% and 17% respectively. The findings in this paper can provide the technical support and theoretical guidance for improving performance and layout optimization of the forecabin cooling module of battery electric vehicles.

Key words: Battery electric vehicles; Forecabin cooling module; Condenser; Heat dissipation performance; AMESim