Laser Treatment Tailoring of Microstructure on Dissimilar Metal joints for improved EV performance (EV-DiMMeTTaL)

电池触片是电动汽车(EV)中电池组装和分布式电存储的关键部件。接头对可靠性和导电性有严格的要求。该项目探索了使用激光来提高电动汽车电池焊接片的性能和完整性的多学科工作。我们的目标是开发一种混合的三步法工艺，结合表面准备、连接和后处理，完成电池生产的清洁、焊接和后喷丸。清洗和喷丸过程将采用一种新型的脉冲绿色激光，而能量密集型焊接过程将使用二极管发射的高功率蓝光激光。该过程将根据电池制造行业应用的现有焊接和加工标准进行自动化、特色化、分级和验证。开发的工艺有望改善焊接电池触点的性能，表现出更高的导电率、更低的损耗和更高的可靠性，所有这些都支持净零浪费倡议。

Battery contact tabs form critical part in the assembly of batteries in Electric Vehicles (EV) and distributed electrical storage. The joints have strict requirements for reliability and electrical conductivity performance. This project explores multi-disciplinary work using lasers to enhance the performance and integrity of EV battery weld tabs. We aim to develop a hybrid three-step process combining surface preparation, joining and post-processing to accomplish cleaning, welding and post-peening for battery production. A novel pulsed green laser will be deployed for the cleaning and peening processes, while diode emitted high power blue laser will be used for the energy intensive welding process. The process will be automated, characterized, ranked and validated against existing welding and processing standards applied by the battery manufacturing industry. The developed process is expected to improve the performance of welded battery contacts, demonstrating higher conductivity, lower losses and improved reliability all supporting net zero waste initiative.