Durability of electric vehicle battery pack joints

为了解决全球对气候变化和地球温度升高的关注，必须减少/消除二氧化碳的排放。交通工具是二氧化碳排放的主要来源，占加拿大温室气体排放量的近30%。减少这种对全球变暖的重大贡献的一个积极方法是运输车辆的电气化。电池驱动的汽车是汽车电气化的基石。为了提高电动汽车电池的效率和安全性，必须保持电池的结构耐久性。本项目研究了典型电池组主要焊缝/接头的结构可靠性要求。本研究中考虑的接头包括电池端子到电池连接接头、新型无铅焊点以及电池单元和电池组外壳上使用的缝焊缝。结果将由Stellantis实施，以扩大其对电池电动汽车的适应。

To address the global concerns regarding climate changes and increase of earth temperature, carbon dioxide emission has to be reduced/removed. A major source of Co2 emission is transportation vehicles, which account for close to 30% of Canada's greenhouse gas emissions. An active method to reduce this significant contribution to global warming is electrification of transportation vehicles. Battery operated vehicles are the cornerstone of automotive electrification. To improve the efficiency and safety of the batteries in electric vehicles, structural durability of them must be maintained. This project studies the requirements for structural soundness of major weld/joints in a typical battery packs. The joints that are considered in this study include battery terminal to battery connection tabs, new lead-free solder joints, and seam weld used on the housing of battery cells and battery packs. Results will be implemented by Stellantis to expand their adaptation of battery electric vehicles.