Enhanced Cell Designs for Improved Internal Heat Transfer for High Rate and Power Capable, Large-Format Batteries Navy SBIR FY2015.1 Sol No.: Navy SBIR FY2015.1 Topic No.: N151-073 Topic Title: Enhanced Cell Designs for Improved Internal Heat Transfer for High Rate and Power Capable, Large-Format Batteries Proposal No.: N151-073-0512 Firm: InvenTek Corporation 320 Willow Street New Lenox, Illinois 60451-1047 Contact: Thomas Kaun Phone: (815) 462-4145 Abstract: For this SBIR, InvenTek provides its unique disc-shaped Li-ion cells to meet the high-rate requirements of a shipboard battery. These cells consist of short electrode (13mm tall) and massive connection to cell terminals to boost cell power and internal heat dissipation. The anisotropic thermal properties of conventional cylindrical and prismatic cells create thermal management problems for the Navy's shipboard battery objectives. InvenTek large-format cells (15-35Ah capacity) will demonstrate the improved heat dissipation that is required for high rate (at least 10C-rate discharge) performance to improve battery safety and life. As requested, this unique cell architecture provides a hardware solution that can be applied to most all Li-ion cell chemistries. InvenTek also supplies a number of the large disc-shaped cells for specialized Navy testing to evaluate safety and thermal properties. Phase I develops a prototype cell design for a shipboard battery demonstration in Phase II. Benefits: A Li-ion battery that overcomes thermal problems and meets high-rate performance requirements will benefit Navy ship power systems. The shipboard battery will meet demands of increased electrification and improve overall energy efficiency. These safe, efficient, high-rate batteries can also improve electrified transportation, alternative energy generation, and grid energy storage. These dual use applications can push down Navy procurement costs. Reduced fossil fuel consumption also mitigates the problems of air pollution and climate change. Return