Electronic assembly for a rotary electric machine for a motor vehicle

An electronic assembly for a rotary electric machine of a motor vehicle, said electronic assembly comprising:

• electronic component blocks having different thermal dissipation needs, the electronic component blocks comprising a power block and a control block, wherein the control block controls the power block;
• and
• a cooling device that cools said electronic component blocks and comprises a protective cover for covering the power and control blocks,
• said protective cover comprising a first set of openings that is positioned opposite to a first cooling element coupled to the power block and opposite the control block,
• the first cooling element being a first dissipator provided with a base plate having a plurality of fins, said base plate being extended with respect to the power block to allow a first radial flow of cooling air, flowing radially through the first set of openings, to sweep over said plurality of fins for said power block before exiting axially through the protective cover toward the electric machine, and a second radial flow of cooling air flowing in a gap between said control block and said power block, for said control block,
• wherein the second radial flow of cooling air flows radially beneath a lower surface of the control block and above an upper surface of the power block.