The design solutions are assessed from an assembly, disassembly and modularity point of view to establish what solutions are of interest. Based on the evaluation, an “ideal” battery is developed with focus on the hardware, hence the housing, attachment of modules and wires, thermal system and battery management box.
Battery Module: Manufacturing, Assembly and Test Process Flow. In the Previous article, we saw the first three parts of the Battery Pack Manufacturing process: Electrode Manufacturing, Cell Assembly, Cell Finishing. Article Link In this article, we will look at the Module Production part.
AMS: Looking at EV battery assembly, what are the key process steps? Paul Freeman: The first step is the cell-to-cell (cylindrical) joining. Currently these are packed into a cradle but this takes up space in the pack, so OEMs are investigating the option of gluing these cylindrical battery cells together.
All battery housings are assembled using screws which is beneficial for the disassembly since it is possible to remove the lid without damaging it. However, a large amount of screws is needed, making it a time-consuming activity and an increased number of parts results in longer lead times as well as higher material usage.
A battery has several ways to implement modularisation and among these are design of the housing and module as well as concerning the management of its environment.
When designing a battery pack, it is important to weigh different parameters against each other to acheive a suitable design. It is therefore significant for these tradeoffs to have a valid foundation to stand on. One tradeoff that needs to be accounted for is comparing safety of the battery against its weight.