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

电池接触片是电动汽车（EV）和分布式储能系统中电池组装的关键部件。接头对可靠性和导电性能有严格的要求。该项目探讨了多学科的工作，使用激光来提高电动汽车电池焊接片的性能和完整性。我们的目标是开发一种混合三步工艺，结合表面处理，连接和后处理，以完成电池生产的清洁，焊接和后喷丸。一种新型的脉冲绿色激光器将用于清洁和喷丸工艺，而二极管发射的高功率蓝色激光器将用于能量密集的焊接工艺。该工艺将根据电池制造业应用的现有焊接和加工标准进行自动化、特征化、排名和验证。开发的工艺有望提高焊接电池触点的性能，表现出更高的导电性，更低的损耗和更高的可靠性，所有这些都支持净零废物倡议。

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.