Ultrafast Charging of Smart Lithium Ion Rechargeable Battery Hybrid Power Sources

To meet ultrafast charging requirements for the LI7 land warrior battery, we propose building a large format, high power lithium ion battery using the high rate technology that already exists and is available from Lithium Technology Corporation. This battery will not only discharge quickly to provide the rapid recharge of the LI7 units, but will itself be capable of recharging quickly from another power supply. Initially, we will quantify energy storage and heat generation for a variety of charging and discharging protocols at the single cell level - both 9Ah and 27Ah - all within 30 minute duration. From these tests, we will select protocols that offer the highest specific energy actually stored in the LI7 units in 30 minutes and test them using full scale 4S large batteries and 4S4P arrays of 18650s. Last, we will recommend power electronics to condition the voltage and current output based on the outcome of the full battery tests. Also, a Phase I Option is recommended to scale-up the best effort results from Phase I. A portion of this work will be subcontracted to PennState Future Truck group. Lithium Technology Corporation will perform over 67% of this work in its Plymouth Meeting, PA facility.