Converting an input DC voltage into an output dc voltage having a predetermined value using batteries

A device for converting an input DC voltage (Vin) into an output DC voltage (Vout) having a predetermined value, comprising:

• a set of elementary components comprising:
• a voltage source (Gin) for generating the input DC voltage (Vin);
• two output nodes (Vout+, Vout−);
• a plurality of energy-storing elements (Bij), each consisting of one battery or of a plurality of batteries connected in series or in parallel;
• a switching matrix (MC), configured to connect the elementary components to one another in a periodic cycle composed of a plurality of phases;
• each phase being associated with one different connection configuration chosen so that:
• in each energy-storage element, the amount of charge at the start of the cycle is equal to the amount of charge at the end of the cycle;
• the two output nodes (Vout+, Vout−) have a potential difference equal to the predetermined value of the output DC voltage (Vout) during all the phases, wherein:
• the switching matrix (MC) comprises a plurality of elementary switching cells (CEEij), each elementary switching cell (CEEij) being associated with one elementary component and comprising at least two commanded switches;
• each elementary component has two terminals, and for each elementary component:
• the first terminal is connected, via at least a first commanded switch, to any at least one terminal chosen from the terminals of the other elementary components or either one of the output nodes (Vout+, Vout−);
• the second terminal is connected, via at least a second commanded switch, to any at least one terminal chosen from the terminals of the other elementary components or either one of the output nodes (Vout+, Vout−).