International Scientific Journal

Thermal Science - Online First

online first only

Research on multi-stage heating method of high-speed railway emergency traction battery system based on flat heat pipe

High-speed rail vehicles need to start the emergency traction battery system in an emergency. In order to ensure that the emergency traction battery system can be quickly started in cold conditions and ensure that the high-speed railway has sufficient mileage, this paper proposes a multi-stage heating method based on flat heat pipes. The thermodynamic parameters of the power battery are obtained by simulation analysis and experimental verification. According to the thermodynamic model, the heat generation model and coupled heat transfer model of the battery are established. Different heating powers are assigned to different heating points and the total heating power is kept constant. Through the analysis results, the multi-stage heating device of the emergency traction battery system can effectively reduce the heating time under cold conditions and the temperature difference between the battery system modules. This paper can provide reference to the design of the battery pack and the matching of the heating system.
PAPER REVISED: 2020-04-07
PAPER ACCEPTED: 2020-04-13
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