Herein, thermal management of lithium-ion battery has been performed via a liquid cooling theoretical model integrated with thermoelectric model of battery packs and single-phase heat transfer.
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.
A lightweight compact lithium-ion battery thermal management system integratable directly with ev air conditioning systems. Journal of Thermal Science, 2022, 31 (6): 2363–2373.
Indirect liquid cooling has been adopted by the Chevrolet Volt, and Tesla Model S. A123 used fins for heat removal and achieved temperature uniformity. A fierce debate is ongoing about which kind of cooling method should be applied to EDV battery packs.
The simulation results are useful to battery pack designers of electrical vehicle to assess and choose a proper cooling method under the volumetric constrain. They can also get a usable flow rate of different cooling methods for a specific control target. 1. Fin cooling adds the most extra weight when all cooling methods have the same volume. 2.