Immersed energy storage battery temperature

The promising application of liquid immersion technology in electronic equipment has also garnered increasing attention for its potential in battery thermal management. Power battery immersion liquid-cooling technology involves directly immersing the battery in dielectric liquid to dissipate heat through convection or phase-change heat transfer.

The results showed that 100% immersion technology could keep the battery temperature within the required range under all the discharge rates considered. At the discharge rate of 4 C, the maximum surface temperatures of 100% immersion, 50% immersion, and air-cooled battery were 33.32 °C, 42.28 °C and 45.61 °C, respectively.

Luo et al. experimentally found that for an immersion cooling system, the maximum temperature of the battery increases from 35 to 50 °C when the inlet temperature of the coolant increases from 30 to 45 °C, while the maximum temperature rise of the battery is almost unaffected by the inlet temperature, as shown in Fig. 15.

Therefore, a method is needed to control the temperature of the battery. This article will discuss several types of methods of battery thermal management system, one of which is direct or immersion liquid cooling. In this method, the battery can make direct contact with the fluid as its cooling.

A novel liquid-immersed battery thermal management system was designed. The No. 10 transformer oil with insulation and cooling properties is a suitable choice for the immersion cooling liquid. The liquid-immersed battery thermal management system can significantly decrease the maximum temperature and temperature difference of the battery module.

Battery thermal management systems are crucial components of pure electric vehicles. The promising application of liquid immersion technology in electronic equipment has also garnered increasing attention for its potential in battery thermal management.