Patent ID: 7952223

Claim:
A micro-hybrid device ( 1 ) for recuperation and restitution of electrical energy in a motor vehicle; said micro-hybrid device ( 1 ) adapted to be mounted in parallel in relation to an electrical cascade connection of a rotary electrical machine ( 4 ) mechanically coupled to a thermal engine of said vehicle, an AC-DC converter ( 2 ) and a DC power supply bus ( 3 ), said DC power supply bus ( 3 ) being connected to said AC-DC converter ( 2 ) and capable of being connected to terminals of an energy storage battery ( 5 ) powering an electrical distribution system of said vehicle; said micro-hybrid device ( 1 ) comprising: large capacity energy storage means ( 9 ); a reversible DC-DC converter ( 8 ), said large capacity energy storage means ( 9 ) being connected to said DC power supply bus ( 3 ) via said reversible DC-DC converter ( 8 ); and electronic control means ( 10 ) connected to said reversible DC-DC converter ( 8 ) and programmed to ensure, depending on a voltage measured on the DC power supply bus ( 3 ), an automatic regulation of the DC power supply bus ( 3 ) to a constant voltage during one of the recuperation of energy in said large capacity energy storage means ( 9 ) and the restitution of energy by said large capacity energy storage means ( 9 ); said electronic control means ( 10 ) controlling the operation of said micro-hybrid device according to at least one of the following modes: an autonomous mode of operation in which control of said micro-hybrid device being defined autonomously by said electronic control means ( 10 ), and a driven mode of operation in which control of said micro-hybrid device being defined by said electronic control means ( 10 ) depending on at least one piece of information ( 11 ) supplied to said micro-hybrid device by a system of said vehicle.