A multifunctional battery module design for electric vehicle
Meng Wang1, Liangliang Zhu2, Anh V. Le1, Daniel J. Noelle3, Yang Shi3, Ying Zhong3, Feng Hao2, Xi Chen2, Yu Qiao1,3*
1 Department of Structural Engineering, University of California-San Diego, La Jolla, CA 92093-0085, USA;
2 Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, USA;
3 Program of Materials Science and Engineering, University of California-San Diego, La Jolla, CA 92093, USA
Abstract Reducing the overall vehicle weight is an efficient, system-level approach to increase the drive range of electric vehicle, for which structural parts in auto-frame may be replaced by battery modules. Such battery modules must be structurally functional, e.g., energy absorbing, while the battery cells are not necessarily loading-carrying. We designed and tested a butterfly-shaped battery module of prismatic cells, which could self-unfold when subjected to a compressive loading. Angle guides and frictionless joints were employed to facilitate the large deformation. Desired resistance to external loading was offered by additional energy absorption elements. The battery-module behavior and the battery-cell performance were controlled separately. Numerical simulation verified the experimental results.
This research was supported by the Advanced Research Projects Agency-Energy (ARPA-E) under Grant No. DEAR0000396, for which we are grateful to Dr. Ping Liu, Dr. John Lemmon, Dr. Grigorii Soloveichik, Dr. Chris Atkinson and Dr. Dawson Cagle.