Case Studies

Case Study #1: Failure Analysis of Dropped Prismatic Cell

After a handheld device containing a Li-ion prismatic cell was dropped, the cell burst into flames. CT analysis shows a line of melted Cu along the top of the outer wrap of anode foil adjacent to the cathode tab. Read more >

Case Study #2: Virtual Cell Winding

A common design issue for cylindrical cells is how to maximize the cell capacity while ensuring the cell winding will fit into the can. The cell winding is never perfectly round because every tab, tape and coating edge produces bumps that affect the shape of the winding. To maximize the cell capacity it is important to distribute these such that the winding is as round as possible. Read more >

Case Study #3: Severe Cathode Contamination

Several low voltage self-discharging cells were found in a single batch of cells. When opened they contained large, mm size SD spots. Read more >