LATTICE SANDWICH STRUCTURE OPTIMIZATION FOR POUCH BATTERY PROTECTION

• Main Author: Prastawa, Hanifandityo
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/71472
• Institution: Institut Teknologi Bandung

The use of a lattice structure in a pouch type battery protection system aims to increase the safety of electric vehicles by optimizing the design to achieve maximum Specific Energy Absorption (SEA) values. The lattice structure is used because, although it has a complex geometry, it has the ability to absorb high impact energy and it is light. In this research, the lattice structure optimization will be carried out using the Taguchi method to determine the design configuration that produces the largest SEA. There are four control factors, namely unit cell shape, cell relative density, length to width ratio (A/B), and material, and three levels of each factor are used in the optimization process. Analysis of Variance (ANOVA) will produce output in the form of structural sensitivity to each control factor. There are three forms of lattice unit cells used, namely BCC-Z, FCC-Z, and Octet. In addition, there are three types of materials that will be used, namely Aluminium 6061-T6, nylon polymer, and Nylon with Carbon Fiber Reinforcement (ePAHT-CF). The results of the ANOVA show that the material is the parameter with the largest contribution to the SEA value in the optimization process. Optimal configuration with FCC-Z unit cell shape, 20% cell density, A/B ratio of 1, and Al6061-T6 material will be applied to the pouch type battery protection system structure. This design configuration results in a 656% increase in SEA value over the base model. After simulating the battery protection system with optimized lattice structure, the design can withstand excessive battery deformation. So, it is concluded that the optimized structure is able to prevent the battery system from failure.