大功率直流充电模块热模型简化方法及应用

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关键词：直流充电模块；流体力学建模；散热器热阻；强迫风冷；简化方法中图分类号：TM910.6 文献标志码：A 文章编号：2095-8188（2026）02-0067-10DOI：10.16628/j.cnki.2095-8188.2026.02.009

Abstract：With the continuous improvement of the power level and power density of high-power DC charging modules，more severe challenges are posed to the heat disipation design of modules，among which forced air coolingheat dissipation iswidelyused in high-powerDCcharging modules.Firstofall，theoverallhydrodynamic modeling of themodule inletsectionand fullydevelopedsection iscarriedout to obtain aunified mathematical model.Onthis basis，theimpedancecharacteristiccurveof thesystem isobtainedand thenassciatedwiththe staticpressure dropof thefan to determinethe working pointof thesystemand mathematically modelthe thermal resistance of radiator.A simplified design method of the thermal model is proposed，based on which a 60kW highpowerDC charging modulewith forced air-cooling heat dissipation isconstructed，and thereasonablenessand feasibilityofthemodelingand simplified designareverifiedthrough finiteelement simulationand thermal experiment.

Key words：DCcharging module； fluid dynamics modeling；thermal resistance of radiator； forced air：ooling；simplified method

0引言

随着新能源汽车的快速发展，解决新能源汽车的快速电能补给问题成为相关部门及行业关注的焦点[1-3]。（剩余10057字）