Immersion thermal management technology for lithium-ion battery
In order to comprehensively explore the influence and rule of various factors on the immersion cooling effect of bat-tery module,taking the smallest module unit composed of nine 21700 batteries as the research object,a test bench was built and experimental research was carried out.It was found that,the temperature difference of the module under the condition of forced convection cooling was smaller when 1C discharged,while the temperature difference under the condition of natural convection cooling was smaller when 2C discharged.The numerical simulation method of the immersion cooling module was established and verified.By comparing and analyzing the results of different models,it was found that the electrical connec-tion components would affect the temperature rise and distribution.Based on the simulation method,the influence of the cool-ing medium and its flow rate and temperature on the cooling effect was explored.The temperature rise and temperature differ-ence decreased with the increased of the flow rate;reducing the inlet temperature would reduce the temperature rise,and in-creasing the inlet temperature would diminish the temperature difference of the module.
battery thermal managementimmersion coolinginfluencing factorstemperature distribution