A review on research status and key technologies of battery thermal management and its enhanced safety

Abstract

Summary The reliable protection of personal safety and vehicle service security has aroused the rising attention on battery thermal safety issues. This poses ongoing challenges for battery thermal management (BTM) to improve the safety by constantly learning and adopting advanced technologies from thermal management to thermal safety control. On the basis of electrochemical, mechanical, and thermo‐kinetic characteristics of battery behavior evolution under operational conditions of normal and abnormal, BTM with enhanced safety cannot only guarantee the battery operation performance but also improve thermo‐safety behavior with the heat transfer intensifying method. Additionally, via effective measurements to detect and warn the battery behavior evolution characteristics, the combination of emergency cooling, fire extinguishing, and thermal barrier adopted in BTM with enhanced safety can effectively and sufficiently suppress battery thermal overheating and its propagation. As concluded, the synthesized integration of basic BTM and its safety‐enhanced treatment can ensure the optimal working temperature range and prevent thermal overheating from propagation. Thus, the BTM system with enhanced safety has been a promising research priority. This article provides a comprehensive review on BTM with enhanced safety aiming to promote the battery application with high energy density, security, and cyclic stability served for electrification and intelligentization of automobiles. In addition, the summary of relevant research status and key technology is dedicated to improving BTM thermo‐safe design innovation and collaborative optimization, to fit with the sustainable development needs of the long‐term mechanism of energy conservation and green‐energy vehicles marketization.

Towards impedance‐based temperature estimation for Li‐ion battery packs

“…Therefore, one of the purposes of a battery management system (BMS) is to monitor temperature and to keep it within a specified range . For example, high battery temperatures can induce thermal runaway, which may cause fire or explosions and accelerate ageing of the battery, thus reducing lifetime and performance . Various temperature indication methods exist for Li‐ion batteries .…”

Multi‐objective design optimization for mini‐channel cooling battery thermal management system in an electric vehicle

“…The results indicated that the Reynolds number had a significant effect on cooling performance. Some critical technologies of BTMS can be found in Wang et al…”

“…The results indicated that the Reynolds number had a significant effect on cooling performance. Some critical technologies of BTMS can be found in Wang et al 23 However, the comprehensive study on the optimal design of BTMS with liquid cooling is still rare. In this article, the liquid-based cooling system comprises of thermodynamics, fluid dynamics, and structure.…”

Experimental investigation on the effect of ambient pressure on thermal runaway and fire behaviors of lithium‐ion batteries

“…A large number of theoretical and experimental studies have shown that thermal runaway is the main cause of LIB safety accidents . On the basis of the studies of thermal runaway, scholars put a lot of efforts in order to increase the thermal stability of the LIB materials, reduce the internal flammability, and improve the battery thermal management . LIB fire and explosion risk researches are also gradually developed, such as Perrine Ribiere et al explored the combustion behaviors of LIB using Tewarson calorimeter, and the results showed that state of charge (SOC) had a significant effect on LIB fire and poisonous gas generation .…”