A review on recent progress, challenges and perspective of battery thermal management system

In the charging and discharging process of new energy vehicles, how to maintain power battery within optimum operating temperature range, reduce the peak temperature and temperature difference, which is a problem needs to be paid attention to. Proper cooling technology can reduce the negative influence of temperature on battery pack, effectively improve power battery efficiency, improve the safety in use, reduce the aging rate, and extend its service life. In this context, several battery thermal management systems(BTMS) are reviewed, including air cooling BTMS, liquid cooling BTMS and refrigerant direct cooling BTMS in traditional battery thermal management system; phase change material-based BTMS, heat pipe-based BTMS and thermoelectric element-based BTMS in new battery thermal management system. In order to reduce negative influence of excessive temperature on the battery pack, and to seek feasible solutions for BTMS in future development, the above six power battery cooling technologies are discussed. Summarize the research emphases and research progress of different BTMS at present. Objectively evaluate the advantages and disadvantages of each BTMS. Considering actual working conditions, the installation feasibility, as well as economic benefits of each BTMS, then discuss proper solutions, and predict future development trends reasonably. Finally, analyze and discuss the differences and gaps between traditional and new BTMS. Providing a reference for designing the best BYMS solution. Ensuring the battery is in the optimum operating temperature range, maintain the BTMS stable operation, and improve battery conversion efficiency, providing valuable solutions for the BTMS research in the future.

Research progress on power battery cooling technology for electric vehicles

Numerical analysis of different fin structures in phase change material module for battery thermal management system and its optimization

A battery thermal management system (BTMS) is arguably the most vital component of an electric vehicle (EV), as it is responsible for ensuring the safe and consistent performance of lithium ion batteries (LiB). LiBs are considered one of the most suitable power options for an EV drivetrain. Owing to lithium's atomic number of three (3) and it being the lightest element of the metals, lithium is able to provide fantastic energy-to-weight characteristics for any lithium-based battery. LiBs are also known for having low self-discharging properties and hence provide long life cycle operation. To obtain a maximum power output from LiBs, it is necessary to critically monitor the operating conditions of LiBs, particularly temperature, which is known to directly affect the performance and life of LiBs. The temperature rise present around LiBs is caused by the heat generation phenomena of lithium ion cells during charge and discharge cycles. In this study, an investigation is made into one of the major categories of a BTMS, used in making the EV powertrain much more efficient and safe. Specifically, this study investigates and reviews air-cooled BTMS techniques (passive and active) and design parameter optimization methods (either via iteration or algorithms) for improving various BTMS design objectives. In particular, this study investigates minimizing the change in temperature among cells (ΔTmax) in a battery pack (BP). The data are classified, and results from recent studies on each method are summarized. It is found that despite features such as extreme simplicity, ease of implementation, and the relatively low cost of naturally air-cooled BTMS, it is almost impossible for the methods to provide adequate cooling conditions for the high energy density LiBs used in EVs. A shift in focus from a naturally air-cooled BTMS to a forced air-cooled BTMS is observed from the amount of studies found on the topics during the time scope of this study. Parameter configuration optimization techniques for the air-cooled BTMS are discussed and classified, and optimization algorithms applied by researchers to improve objectives of the BTMS are identified.

Configuration, design, and optimization of air-cooled battery thermal management system for electric vehicles: A review

A review of air-cooling battery thermal management systems for electric and hybrid electric vehicles

Experimental study on the thermal management performance of air cooling for high energy density cylindrical lithium-ion batteries

To comprehensively investigate the thermal and energy characteristics of air-cooling battery thermal management systems (BTMSs) during fast charging, a battery pack with 32 lithium-ion batt...

Xiaojun Tan

Papers

Experimental study on the thermal management performance of air cooling for high energy density cylindrical lithium-ion batteries

Experimental and Numerical Study on Thermal and Energy Management of a Fast-Charging Lithium-Ion Battery Pack with Air Cooling