Application and Research Progress of Heat Pipe in Thermal Management of Lithium-Ion Battery

Abstract

Lithium-ion batteries have the advantages of high energy density, high average output voltage, long service life, and environmental protection, and are widely used in the power system of new energy vehicles. However, during the working process of the battery, the working temperature is too high or too low, which will affect the charging and discharging performance, battery capacity and battery safety. As a result, a battery thermal management system (BTMS) is essential to maintain the proper ambient temperature of the working battery. Thermal management of power batteries is a key technology to ensure maximum battery safety and efficiency. This paper discusses the significance of thermal management technology in the development of new energy vehicles, introduces the main technical means of thermal management of lithium-ion batteries for vehicle, and focuses on the current state of research on the use of various types of heat pipes in lithium-ion batteries. Finally, the use of heat pipes in the thermal control of lithium-ion batteries is promising.

Comparative Review of Thermal Management System for BESS

“…Because there is a risk of fluid leaks and pump failures, liquid active cooling calls for increasingly stringent safety measures. Except for leaks, heat pipes are secure and eco-friendly [66]. Though they can break down and become pollutants over time [54], PCM is environmentally benign and harmless.…”

Comparative Review of Thermal Management Systems for BESS

“…Liquid-active cooling requires stringent safety measures due to the potential for fluid leaks and pump failures. Heat pipes are generally secure and eco-friendly, although they can degrade over time and become pollutants [68]. Similarly, PCM is environmentally benign and non-toxic, but it can break down and pose environmental risks [56].…”