IMPROVING THE TECHNOLOGY FOR MANUFACTURING ELECTRIC VEHICLE TRACTION BATTERY HOUSINGS TO PROTECT AGAINST IMPACT DAMAGE

Abstract

On modern electric vehicles, the traction battery is installed from below on the bottom of the body, which reduces the height of the vehicle's center of gravity and improves the vehicle's lateral stability during curved movement. The disadvantage of this arrangement is the increased risk of damage and destruction of the protective housing and, accordingly, the battery's electrical elements, which are dozens of ordinary household lithium-ion batteries of the AAA type. But the housings of these electrical elements are manufactured using a special technology that helps increase the strength of the housing and from a material with high heat dissipation. It is shown that the traction battery is the most expensive component of an electric vehicle. Therefore, the development of production methods aimed at increasing its service life is an urgent task.

The mechanical characteristics of anisotropic material were taken into account during the manufacture of reinforced containers for electrical element housings. Data were determined that reliably reflect the influence of the stretching coefficient, planar anisotropy and the initial diameter of the work piece on the critical thickness of its plate. An expression was obtained that takes into account all the characteristics of the technological process that affect the thickness of the initial work piece. This allows you to control these characteristics in order to optimize the thickness of the work piece. The dependence obtained as a result of the study allows you to accurately and qualitatively calculate the optimal thickness of the initial work piece at the stage of developing the technological process for manufacturing battery cell housings for electric vehicles.

Key words: electric car, lithium-ion battery, battery protection, anisotropic materials.