A CONTEMPORARY REVIEW OF THE ADVANCEMENTS IN JOINING TECHNOLOGIES FOR BATTERY APPLICATIONS

The joining of multilayered foils to a conductive tab necessitates a joining process in the battery, which is an important storage device in renewable-energy sectors. Cell, module, and pack are the three levels of pouch cell joining in a battery pack. The join-ing of multi-layered dissimilar conductive materials is necessary for battery-pack fabrication. Mostly copper (Cu) and alu-minium (Al) are used in battery-pack applications. The Cu and Al are characterized as high thermally and electrically conduc-tive materials. However, obtaining a quality Cu-Al weld using conventional methods is hard and the durability of the weldments is uncertain. In general, the development of intermetallic compounds (IMCs) during welding is a major challenge for the joining of dissimilar materials due to the differences in the chemical and physical properties. This review addresses the battery packs and challenges involved in joining the conductive tabs. In addition, this review provides an insight into the suitability of various joining processes and explores their suitability for the joining of battery packs.