Valeo Equipements Electriques Moteur

Valeo Equipments Electriques Moteur

Jie Wen

Fabrice Tauvron

Marc Tunzini

Régis Seidenbinder

David Delplace

Bryann Lafabrie

Cyrille Dheripre

Romaric Guillard

Ruth Lopez

An architecture of interconnected electronic power modules for a polyphase rotary machine, includes electrically interconnected power modules () and a connector () including one or more layers formed by pluralities of conductive traces borne by plates, such as to connect the power modules (to) to one another and to electrical elements of the rotary machine. The power modules (to) include a plurality of connection elements (to) brazed directly to components of the power modules (to) and, in the upper part, to conductive traces of the connector (). This architecture includes a heat sink () equipped with open cavities (to) for receiving the power modules (to). A polyphase rotary machine is also provided using such an architecture, in particular a dual three-phase alternator with synchronous rectification.

Architecture of interconnected electronic power modules for rotary electrical machine, and rotary electrical machine comprising architecture of this type

A method for interconnecting electronic power modules of a polyphase rotary electric machine. The power modules are disposed in open cavities of a heat sink and comprise substrates on which are provided MOSFETs of a synchronous rectifier bridge and integrated control circuits. The method comprises the production of: a planar connector () including at least one layer of conductive traces (); a plurality of interconnection elements () arranged in multiple geometric formations and ultrasonically welded or brazed (S) directly to the substrates () and/or the MOSFETs; and openings () in the planar connector () allowing the free passage of the upper ends () of the connection elements () and a mechanical contact with the conductive traces (). The electrical connections are obtained by means of laser () transmission welding (S) or electric resistance welding.

Process for interconnection of electronic power modules of a rotary electrical machine, and assembly of interconnected power modules obtained by means of this process

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Issy les Moulineaux, France

Jie Wen