Patent ID: 8137834

Claim:
An electrical propulsion cell for the propulsion of a movable device in an aquatic medium, comprising, in a sealed body: a first chamber forming a housing comprising an auxiliary electrical cell and a command and control module for the electrical propulsion cell; a second chamber forming a reservoir comprising a main electrical cell of the electrochemical type, said second chamber being provided with members for controlled admission and regulation of a flow of water from the aquatic medium into said second chamber to form an activation electrolyte for activating said main electrical cell after a command to admit water from the aquatic medium; and a third chamber forming a second housing comprising a module for triggering the admission by suction of water from the aquatic medium and a discharge by escape of effluents resulting from a chemical reaction of the main electrical cell into the aquatic medium, from an admission valve and an escape valve, respectively, which are mounted in said third chamber, said command and control module of the electrical propulsion cell programmed to permit an activation of said auxiliary electrical cell in order to generate electrical energy temporarily during a stage of launching said movable device in the aquatic medium, and a triggering of the admission by suction of water from the aquatic medium and of the discharge by escape of effluents in order to produce electrical energy from said main electrical cell during a cruise phase, wherein the auxiliary electrical cell is configured to directly supply electrical energy to an engine for the propulsion of the movable device and all other members of the electrical propulsion cell during the stage of launching.