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DIRECTED ENERGY PROFESSIONAL SOCIETY

Abstract: 25-Systems-203

UNCLASSIFIED, PUBLIC RELEASE

Extreme High Power Safe Lithium-Ion Battery Systems

Forge Nano has developed extreme high-power lithium-ion battery systems offering up to 170C discharge rates while incorporating in-organic electrolyte additives to eliminate the possibility of fire or explosion during a potential catastrophic safety event. Forge Nano battery cells incorporate raw anode and cathode materials that are coated at the molecular level using Atomic Layer Deposition (ALD) coating techniques. Forge Nano has demonstrated coating raw battery cell materials using ALD coatings results in lower resistance growth within the battery cell over operational cycle life. Minimizing the resistance growth over cycle life of the batter enables longer cycle life, more usable energy over the lifetime of the product, and improves thermal performance. ALD coating is a process of coating each molecule of material with an energetic material generating precision thickness and pin-hole free coating layers. In battery materials, ALD coating generates an artificial Solid Electrolyte Interface (SEI) layer on each molecule which is normally begins formation during the initial charge cycle on the completed battery cell. By creating an artificial, even and uniform SEI layer prior to the initial cell charge cycle, the first cycle efficiency of the cell (available usable energy) increases over uncoated material cells.
Forge Nano has efficiently packaged high-power 18650, 21700 and high-power pouch battery cells into completed battery assemblies capable of being qualified to military standards including NAVSEA 9310, MIL-STD-810, and commercial standards including UN38.8, IEC 62133, UL1642, and UL 2054.
Forge Nano high power battery assemblies are designed using modular and scalable architecture to minimize design costs when assemblies operating at various operational voltages or various operational power levels are required. Forge Nano offers battery assemblies capable of operating over a wide operational temperature range (-40°C to +60°C with capabilities up to +80°C). While operational cycle life in a directed energy system is considered low compared to other military applications like satellite battery systems, Forge Nano is able to provide passive and active thermal management systems when needed to increase the overall battery cycle life and could also incorporate a battery management system if required.
To eliminate the need for cell balancing during chare operation managed by a battery management system, Forge Nano can incorporate individual cell screening and matching criteria. Cell screening and matching provides for the selection of battery cells which have very tight performance characteristic including Open Circuit Voltage (OCV), capacity, internal resistance (DCIR/ACIR), and cell mass. This technique follows NASA standards for cell selection to minimize cell voltage and capacity dispersion during the lifetime operation of the battery system.
Forge Nano’s complete battery system offerings perform beyond current state of practice battery systems and offer extreme safe and high power delivery.

UNCLASSIFIED, PUBLIC RELEASE