Lithium Ion Battery and Ultracapacitors Hybrid for Satellite Power

ABSTRACT: The objective of this Phase II proposal is to develop a hybrid Li-ion/ UCAP system for space power use. Long term space missions utilizing battery based electrical power subsystems often undergo thousands of charge/discharge cycles and short high rate discharge cycles over the length of the mission. During Phase II of this program Yardney in collaboration with Maxwell Technologies propose to develop a hybrid system consisting of high energy Li-ion, high power ultracapacitor (UCAP) and the electronic interface control module. The hybrid system to be developed in this program will maximize end of life Li-ion battery performance in space power applications. BENEFIT: Air Force Application: The target application for this Li-ion/UCAP hybrid system is in space power Air Force applications where long life safety, longer cycle life, and long-term stability are required. This new technology will have superior electrochemical performance even at high rate discharge and long term cycle life due to UCAP interface and the electronic control unit module. Non Military Application: Li-ion/UCAP hybrid systems with high power and long life will benefit all DoD, National Reconnaissance Office (NRO) spacecraft applications, military and commercial communication satellite and even Hybrid Electric Vehicles.