Lithium Ion Pouch Cell Development

More and more lithium ion applications are utilizing pouch cell (soft pack) designs which are an excellent way to reduce weight and cost, as well as optimize packaging efficiency at the battery level. Lithium Ion (Li-Ion) power systems are increasingly becoming the choice for many applications because of Li-Ion’s higher specific energy density than the core technologies of the previous decade such as nickel cadmium and lead acid batteries. Li-Ion technology has higher voltage output per cell than many other systems. Therefore, fewer cells are needed for a given battery voltage.

The Product Development team has recently developed advanced pouch cell designs using recently upgraded manufacturing and testing capabilities at EaglePicher’s advanced Lithium Ion facility. EaglePicher’s baseline pouch cell design employs wide seals for redundancy, profile tab seals to eliminate tab-to-pouch shorts and large tabs for high rate capability

Discharge curves for an 8 Ampere hour battery using a Manganese Spinel electrochemistry can been seen in the graph of figure 2. The cells were tested under ambient conditions and were discharged from C/2 to 10C rates.