Performance study and full CFD model optimization of a new liquid-cooled plate with a rib-grooved structure
In order to improve the thermal management performance of the power battery.Aliquid-cooled plate with a rib-grooved structure characterized by discrete,tilted and alternating arrangements was proposed,in which the groove structure is used to strengthen the heat transfer between the coolant and the inner wall surface,and the rib structure is used to guide the fluid flow and to support the flow channel space.Taking the square lithium-ion battery pack as the research object.Comsol was used to establish a heat transfer flow simulation model to carry out numerical simulation research.The results show that the grooves can make the liquid-cooled plate form a longitudinal cyclone to enhance the heat transfer,and the ribs can effectively balance the flow distribution to enhance the temperature uniformity.Compared with the traditional liquid-cooled plate,the maximum temper-ature of the battery pack and the standard deviation of the contact surface temperature of the new liquid-cooled plate are de-creased by 1.04 ℃ and 0.433 6 ℃,and the pressure difference between the inlet and outlet is increased by 7.8 Pa only.In ad-dition,this paper divides the liquid-cooled plate into a checkerboard space,and adopts a full CFD model combined with a sin-gle-objective genetic algorithm to obtain the optimal distribution of the ribs and grooves in the liquid-cooled plate.Compared with the initial scheme,the maximum temperature increases by only 1％,but the standard deviation of temperature and differenti-al pressure decrease by 33％and 9％,respectively,which provides an excellent comprehensive performance.
Power batteryLiquid-cooled plateFull CFD modelLongitudinal swirl flowSingle-objective genetic algo-rithm
NETL
NSTL
万方数据
