Multi-scale simulation of laser welding for optimal battery pack manufacturing

Important results from the project

The goals that were set from the beginning were not met. The reason is that so-called cutFEM technology is not at the level required to investigate how laser-welded joints behave under the influence of the battery chemistry that prismatic battery cells give rise to. Regardless of this shortcoming, an application was developed that provides the opportunity to investigate different types of battery configurations of battery chemistry for charging and discharging at different temperatures.

Expected long term effects

The long-term objective of the project was to investigate whether there are production technology aspects regarding laser welding of battery modules that affect the efficiency of battery packs. How should the battery cells be joined to optimize the efficiency of complete battery modules and battery packs? This has been and is the main purpose of the project. Virtually the project has succeeded and what remains is validation through experiments of active battery cells.

Approach and implementation

The project has been progressing as expected. The project has had meetings every month at the beginning of the project, but due to increased activity, the meeting frequency was set to every other week instead. This has continued throughout the project until the end of the project. There has been good communication in the project and open dialogue. All parties have been involved in the project and have made comments that have influenced the project and benefited the result.