IJIERT-STABILIZING THE THERMAL TEMPERATURE OF LITHIUM BATTERIES USING PELTIER PLATE FOR EV VEHICLES (original) (raw)

2020, NOVATEUR PUBLICATIONS

Lithium batteries have become widwly used in energy storage systems. Since adverse operating temperatures can impact battery performance, degradation, and safety achieving a battery thermal management system that can provide a suitable ambient temperature environment for working batteries is important. This paper provides a review based on previous based on previous studies, summarizes the electrical and thermal characteristics of batteries and how they are affected by the operating temperature, analyzes the relative merits and specific purposes of different cooling or heating methods, and provides many optimization mrthods. Moverover, because low power consumption, a high temperature regulation capacity, and excellent temperature uniformity are desired for every battery thermal management system, we also present control strategies that can contribute to thermal management. It is indispensable to establish criteria to evaluate battery thermal management systems. We subsequently summarize the characteristic parameters for the analysis of various battery thermal management system desig s. Finally, we provide an outlook for the development of lithium-ion battery thermal management systems. INTRODUCTION Electric vehicles (EVs) and hybrid electric vehicles (HEVs) have been widely regarded as the most promising solutions to replace the conventional internal combustion (IC) engine-based vehicles, and the recent years have seen a rapid development of HV and HEV technologies. Batteries have been widely applied as the power supply for Evs and HEVs due to the advantages such as high energy density, low environmental pollution and long cycle life. On the other hand, batteries require particular care in the EV applications. Improper operations such as over-current, over-voltage or over-charging/discharging will cause significant safety issue to the batteries, noticeably accelerate the aging process, and even cause fire and explosion [1]. Therefore, the battery management system (BMS) plays a vital role in ensuring safety and performance of batteries. Key technologies in the BMS of Evs include the battery modelling, internal state estimation and battery charging. An effective battert model is crucial in battery behaviour analysis, battery state monitoring, real-time controller design, thermal management nad fault dignosis. Besides, some battery internal states, such as state of charge (SOC), state of health (SOH) and internal temperature, cannot be measured directly, while these states play important role in managing the operation of batteries, and thus need to be monitored using proper estimation methods. Further battery charging is also of great importance in BMS due to its direct impact on the operation safety and service availability of battery. A well-designed strategy will protect batteries against damage, limit temperature variations as well as improve efficiency of energy conversion. Slow charging has negative effect on the availability of EV usage, but charging too fast may adversely lead to large energy loss and temperature rise [2]. Large temperature variation further leads to rapid battery aging and even causes overheating or super-cooling, which will eventually shorten the battery service life [3].