Zvyšování bezpečnosti u bateriových článků

Abstract

This thesis focuses on improving the safety of lithium-ion battery cells and battery boxes, which is critical for the widespread use of electric vehicles (EVs) in electromobility. With the increasing number of EVs on the road, the need to ensure their safe use increases, as they are associated with the risk of heat leakage and subsequent ignition. The work presents the current methods and materials used to enhance the safety of LIBs, including the development of insulating coatings and the integration of gas sensors into the BMS. The experimental part of the work focused on testing the electrical strength of various insulating coatings and evaluating their effect on the safety of battery boxes. The dielectric properties of different types of coatings were analyzed and compared, and their potential for use in EVs was evaluated. The work showed that the quality and number of coating layers have a major influence on the dielectric properties of materials. Key factors influencing these properties have been identified, such as the porosity of the materials and non-uniform spray application. The work contributes to a better understanding of the importance of insulating coatings to enhance the safety of LIBs and provides valuable information and recommendations for research teams and EV manufacturers, aiming for innovations in battery materials and safety technologies for battery boxes.