EXPERIMENTAL AND SIMULATION APPROACH OF POUCH BATTERY STRUCTURAL INTEGRITY UNDER BENDING LOAD

• Main Author: Hidayat, Arif
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/47898
• Institution: Institut Teknologi Bandung

Lithium-ion pouch battery is one type of battery that is widely used in hardware such as laptops, cellphones, drones, and electric cars. This type of battery is chosen because of its compact form and configuration that can be changed according to the needs of its users. However, this convenience on the other hand can cause problems because the structural strength of a lithium-ion pouch battery depends only on the presence of a cover and the binding strength between the layers of the battery. Therefore, pouch batteries have low thermal stability so they are prone to short circuits, especially when the battery receives direct mechanical loading such as bending. In this undergraduate thesis, a three-point bending test of the pouch battery structure with various configurations is carried out to obtain the force towards displacement curve. Furthermore, to determine the stress distribution that occurs in the components inside the battery, finite element model simulation of the pouch battery affected by the three-point bending test is performed using the Abaqus 2019 software, with the output in the form of a force towards displacement curve. The results of this simulation are then compared with the results of three-point bending tests for validation. After testing and simulation, it is known that the maximum value of the force for the battery case consisting of four layers, with stacked configuration and without casing aluminum from the three-point bending test is 0.54 N, whereas, from the simulation results, the maximum value of the force is 0.503 N, where there is a 7% difference between this two types of testing.