Heat pipe cooling for Li-ion battery pack is limited by gravity, weight and passive control . Currently, air cooling, liquid cooling, and fin cooling are the most popular methods in EDV applications. Some HEV battery packs, such as those in the Toyota Prius and Honda Insight, still use air cooling.
Choosing a proper cooling method for a lithium-ion (Li-ion) battery pack for electric drive vehicles (EDVs) and making an optimal cooling control strategy to keep the temperature at a optimal range of 15 °C to 35 °C is essential to increasing safety, extending the pack service life, and reducing costs.
Battery cooling is a method of regulating the temperature of the battery pack in electric vehicles to ensure optimal performance, longevity, and safety by dissipating excess heat generated during operation. How do you cool down a battery pack?
Today, the majority of batteries are cooled with liquids using active cooling, which improves temperature management. Since liquids are hundreds of times more efficient in carrying heat than air, managing temperature is much simpler. When electric vehicles first became popular, making batteries was more expensive.
Therefore, in order to cope with the temperature sensitivity of Li-ion battery and maintain Li-ion battery safe operation, it is of great necessary to adopt an appropriate battery thermal management system (BTMS).
M. Larrañaga et al. have shown that even though the indirect liquid cooling systems are less complex regarding the plant accessories and management, the battery pack thermal management does not achieve the same results.