Challenges in battery development – FEV’s design and validation concept

The key component for electrification in the automotive industry is the high-voltage battery system, which supplies the vehicle's high-voltage electrical system and electric drive train and has the largest share in the value chain of an electric vehicle.In order to be able to certify a high-voltage battery system is ready for series production at the time of its production start, it is necessary to secure the development status at an early stage. Based on various criteria such as mechanical stability, service life and intrinsic safety, a test program corresponding to the maturity level is created for the development object. Depending on the maturity of the high-voltage battery system, different virtual subcomponents and component tests are then carried out. The goal is a to achieve complete validation result that supports further product development in the best possible way, even in difficult aspects such as thermal propagation in the case of a cell thermal runaway. Using the example of thermal propagation, this article shows how FEV covers all phases of development and testing in the context of series development of battery systems for the automotive industry.