Development of Methods and concepts for Reducing Munitions Vulnerability to EMI and EMPe Batteries for Munitions and Weapon Platform

EMI vulnerability is a broad topic. This proposal focuses on one key element common to all advanced military devices - the energy storage element. While there has been extensive study on electronic devices, there has been little study of the effect of EMI on batteries or super-capacitors. If the battery destructs, it does not matter if the electronics survive. This study will determine the vulnerability of COTS cells, and develop a model to determine if cell design can affect vulnerability to EMP. The approach is to start with the simplest element (of a cell), model its response to various pulses, compare the model to laboratory test results, revise and then go to the next level of complexity. Two approaches will be tried: A 3D electrode pair model, where the elements would then be stacked or rolled into a cell, and a 2D end-view model of a stack or spiral, which would then be extruded in the third dimension. Next, the compound elements packaged in foil or a can will be modeled and tested. And finally the finished cell with connecting wires. The modeling will be validated experimentally at each stage. Various EMPs will be characterized to apply to the model.