Session 1:
Battery Safety / Quality / Testing I

Tuesday June 27, 2023 / 10:20 AM – 12:00 PM / Riverview Ballroom 1

Chair:
Michael Brundage, U.S. Army CCDC C5ISR, Aberdeen, MD

Co-Chair:
Julie Simmons, NSWC CCD, Carderock, MD

1.3 - Advances on High Safety and Longevity Lithium-ion Batteries

• Trevor Grant, Elmira Memarzadeh, Raj DasGupta
  Electrovaya Inc.
  
  
• 
  The rollout of electric vehicles over the past five years has been hindered by recalls due to battery fire incidents and unreliable performance. While fire safety is a critical concern in passenger vehicles, the potential damage of fires is drastically compounded in vehicles which hold many passengers, carry out critical functions, or operate in the vicinity of large capital assets. This paper details Electrovaya’s recent developments for its Infinity lithium-ion platform in achieving exceptional battery safety and reliability. Electrovaya’s batteries currently leverage key safety technologies across the cell, pack, and battery management system designs. The resulting battery systems show remarkable stability for a high-capacity NMC battery when subject to extreme thermal fluctuation, mechanical shock, and electrical abuse. Infinity cells have also been shown to exhibit outstanding longevity for NMC chemistry, reaching beyond 9000 cycles under 1C cycling conditions. Electrovaya has additionally analyzed field data for battery packs in demanding warehousing applications, where Infinity systems have been shown to maintain 99% of their original maximum capacity after 4 years of powering vehicles which operate close to 24/7 and require over 1 full charge/discharge cycle per day. These results demonstrate how Electrovaya’s Infinity technology gives superior performance over conventional lithium-ion battery solutions, and is exceptionally well-suited for demanding applications where longevity and fire safety are critical metrics.