PRISMATIC CELL BATTERY PACK DESIGN FOR ELECTRIC TRICYCLES

• Main Author: Alifa Putri, Sandra
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/75861
• Institution: Institut Teknologi Bandung

<p align="justify">The Electric Vehicle Research Center at the Bandung Institute of Technology has developed a prototype of a three-wheeled electric vehicle called E-Trike. The prototype battery pack for prismatic cells needs to be evaluated in terms of electrical circuit configuration, thermal management, and mechanical protection. The current prototype lacks modularity, thus making maintenance and reconfiguration challenging without significant changes to the pack setup. The prototype does not meet the IP67 standard, susceptible to short circuits, and has high risk of mechanical electrical connection damage. The battery cells have expanded due to inadequate thermal management. To address these issues, efforts are needed to optimize the existing battery pack design as part of the research and development of the E-Trike electric vehicle components. The battery pack design and configuration have been designed as 21s 2p to supply the E-Trike with 5 kW of power and a voltage of 72 V. The electrical connections are designed to be non-permanent, allowing the electrical circuit to be dismantled without major configuration changes. The energy storage system used in the battery pack is a hybrid energy system, which uses supercapacitors as a buffer for lithium-ion batteries. Regarding thermal aspects, both passive phase-change material and forced cooling systems have been designed with an analytical approach. An enclosure design consisting of a base enclosure, a top enclosure, and plates inside it has been developed. The enclosure design has been analyzed through modal simulations, indentation tests, and static loading. The personal frequency of the casing is outside the excitation frequency range of 0 – 50 Hz. Based on static simulation, the casing is considered safe under static loading and is capable of absorbing energy of 36 J when subjected to an indentation test following SNL standards.