Advanced Power/Energy System for Wet and Dry Submersibles

Yardney Technical Products proposes to evaluate several hybrid energy storage solutions for the SWCS and other manned submersibles. The first part of the Phase 1 effort will evaluate using Li-ion as the main energy storage with removable and replaceable higher energy density systems (e.g. primary cells) operating in parallel. To ensure the best options are considered, the proposed effort will advance the state of the art in submersible energy storage in two ways. First, the proposed effort will be the first to combine the state of the art in high energy silicon anodes with safer, phosphate based cathodes. Normally, iron phosphate cathodes are used in low energy, high power systems; the opposite of what is needed for SWCS. From these results and from existing YTP technology the capabilities of a Li-ion system will be reported both as a stand alone system and as part of a hybrid system. The second part of the Phase 1 effort will utilize experience from Submergence Group’s S201 submersible, presently using a fuel cell, to evaluate design options in which a fuel cell is the primary energy storage device and a battery provides secondary power.