“Our BMW i7 ASSB test vehicle on the road is a perfect example of the BMW Group’s technology-open mindset. We are continuously advancing the development of new battery cell technologies and are constantly expanding our know-how with valuable partners such as Solid Power,” claimed Martin Schuster, Vice President Battery Cell and Cell Module at the BMW Group.

The management of cell expansion is part of the test. In addition, how is the operating pressure controlled and how to adjust the temperature conditions. “The use of solid power cells with sulfide-based electrolytes and their complete integration into a battery pack will provide the BMW Group with further important findings in the test program over the coming months. The innovative cells were developed and manufactured by Solid Power in collaboration with experts from the BMW Group. Further development steps are required to implement ASSB technology in a competitive overall storage system,” BMW said.

The BMW Group and Solid Power have been cooperating since 2016 through an extended “Joint Development Agreement,” supported by BMW Group’s investment in Solid Power in May 2021 as part of a financing round.* At the end of 2022, BMW and Solid Power agreed to further deepen their partnership. BMW will operate a solid cell prototype line at the CMCC (Cell Manufacturing Competence Center) in Parsdorf on the basis of a research and development license and using the experience and expertise of Solid Power.