3.2 KWH Battery Pack Using 18 Army Standard Lithium ion Rechargeable Batteries 2006-01-3099

A very high power source solution was developed for the Non Line of Sight Launch System Container Launch Unit (NLOS-LS CLU). The power source solution has been shown to be capable of providing the required 72 continuous hours of operation and high power (3560 watts) to sustain launch capability. The power source consists of 18 BB-2590/U batteries connected in parallel in three layers. Several CLU battery systems have been delivered to the PEO and have been well accepted. The Army is using standard rechargeable batteries, is currently being upgraded with SMBus capability and higher capacity lithium-ion cells. For this reason, the CLU power source has been manufactured with SMBus capability. This paper will discuss the performance of one layer of the CLU power source to simulate the whole power load. Based the test result, the battery technology use here included polymer and state of art of commercial lithium ion cells can meet the NLOS requirement even at −40C temperature requirement if background load is 10 watts, it will lasted approximate 14 days at −40C.