Safe, High Power/Voltage Battery Module Design Challenges

Darcy, Eric ; Darst, Jacob ; Walker, Will ; Nogrady, Sean ; Rogers, Jim ; Tran, Minh N ; Russell, Sam ; Quinn, Alex ; Coman, Paul ; White, Ralph(JA White & Associates Inc, Columbia, SC, United States)

关键词: ELECTRIC BATTERIES;    HIGH VOLTAGES;    TECHNOLOGY UTILIZATION;    TEMPERATURE GRADIENTS;    COOLING;    SAFETY FACTORS;    OSCILLATIONS;    DESIGN ANALYSIS;    THERMAL CONDUCTIVITY;   

RP-ID  :  JSC-E-DAA-TN66829

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

NASA seeks to demonstrate a path for achieving safe, high power, and high performing Li-ion battery designs for the purpose of establishing design guidelines for our aeronautic and spacecraft applications. Safe means passively resistant to thermal runaway propagation of any single cell catastrophic thermal runaway. High power means capable of 3C continuous discharge without overheating. High performing means achieving > 160 Wh/kg, 200 Wh/L. The biggest challenge has been balancing a high flux light weight path for cell heat dissipation during the high rate discharge that minimizes thermal gradients between cells and also protects adjacent cells from the heat load of thermal runaway cell. Our solution includes an oscillating heat pipe spine that contacts every 18650 cell in the pack and careful cell design selection to maximize the range of initial temperatures conditions where the battery can safely complete the 3C discharge.