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Power/Alternative Energy  

Li-ion battery system for telecom power backup

Posted: 25 Nov 2005     Print Version  Bookmark and Share

Keywords:Saft  Intensium 3  Li-ion battery system  telecom 

Li-ion battery systemline amplifier ICs

Saft's Intensium 3 is a self-contained, 48V lithium Li-ion battery system for telecom power backup. The hot-pluggable unit, suited for 19-inch, 3U rack-mounted applications, has a capacity of 2.2 kWh. The systems currently available to customers feature a volumetric energy density of 136 Wh/l, surpassing most advanced valve regulated lead-acid (VRLA) designs, said the company. These devices require no maintenance and are self-monitoring.

Intensium 3 modules comprise 14 of the company's VL cylindrical lithium Li-ion cells. For maximum performance, life and safety, this design uses a nickel-based positive active material, doped with aluminium and cobalt. Intensium 3 has a projected 10-year life at +40?C. It has a 20-year life at +20?C. The system is rated for operation over -25?C to +60?C.

A three-level design for redundancy checks on component failure and environmentally harsh conditions. The design includes circuitry to check on battery system level, a separate electronic board at the 7-cell pack level, and current-breaker devices on every cell.

Intensium is scaleable, allowing users to connect up to eight units in parallel to provide 18 kWh of backup. The plug n'play system features remote communication (CANbus, dry-contact) interfaces to facilitate information transfer on state of charge, general battery condition and environmental state (temperature). An LED readout provides visual feedback.

-Vince Biancomano
eeProductCenter




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