Valeo Equipements Electriques Moteur

Valeo Equipments Electriques Moteur

Dirk Schulte

Pierre Faverolle

Sébastien Arrighi

Michel Aeschlimann

Thierry Hevia

Jean-Marie Pierret

Michel Fakes

Alexandre Pfleger

Romaric Lenoir

Jean Julien Pfiffer

Serge Masriera

Daniel Hirsou

Karine Stofleth

Eric Le Quere

Yves Ducrocq

The invention relates to a device for assembling, by screwing, a drive member, such as a drive pulley, with a shaft intended to be coupled to the rotor of a rotating electrical machine, the device including an additional, welded connection. According to the invention, this method of producing the assembly device is characterized in that the drive member screwed onto its shaft in the vertical position is welded from below. The invention can be used for rotating electrical machines, such as an alternator or a starter-alternator of a motor vehicle.

Method of assembling drive member with shaft coupled to rotor of rotating electrical machine

The invention concerns a rotating electrical machine, in particular an alternator or an alterno-starter for a motor vehicle, comprising: a rotor () centered and fixed on a rotating shaft () supported by at least one rear bearing (), the rear bearing () including radial cooling fluid outlets (); a stator () enclosing the rotor, the stator including a field coil () including windings constituting phases of the electrical machine; an electronic power circuit () connected to the windings of the stator phases; a heat dissipation bridge () including a first surface whereon is mounted the electronic power circuit and a second surface, opposite said first surface and oriented towards the rear bearing, said second surface forming a longitudinal wall of a passageway () for cooling fluid circulation, another longitudinal wall of said passageway () being formed by the rear bearing () supporting the stator wherein the second surface of the heat dissipating bridge () comprises cooling means () arranged in the fluid circulation passage ().

Device for cooling the power electronics integrated at the rear of an alternator or a reverse alternator

Current rectifying equipment for rotary electrical machines has a rear bearing, of the type comprising a plurality of positive diodes () supported by a support () in the form of a plate, a plurality of negative diodes () supported by the rear bearing () of the machine, a device () for connecting the positive and negative diodes together, and structure for generating a forced axial stream of a coolant fluid, the support () for the diodes carrying cooling fins () which extend in the axial stream (F) of the coolant fluid in the radial direction of the machine. The equipment includes means for effecting mixed cooling of the support for the negative diodes by convection and conduction. The invention can be used for alternators for motor vehicles.

Current rectifier assembly for rotating electrical machines, in particular motor vehicle alternator

The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support () for a plurality of positive diodes (), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins () on its front face oriented towards the axis of the machine; the positive diode support device () being produced in the form of at least one moulded piece ('), whose face oriented towards the aforementioned axis carries fine cooling fins (). The invention can be used in alternators for motor vehicles.

Current rectifier assembly for rotating electrical machines, in particular motor vehicle alternators

The invention relates to a rotary electric machine comprising a rear bearing ( ), an arrangement ( ) for rectifying the current produced by the machine, which comprises a number of positive diodes ( ) supported by a heat dissipater in the overall form of a plate ( ) and a number of negative diodes ( ) supported by support means in the form of a plate advantageously forming part of the rear bearing, the plate ( ) supporting the positive diodes ( ) comprising a great many cooling ribs which have the shape of fins ( ) extending practically radially across the plate, while an opening ( ) for the passage of cooling air is made between each pair of adjacent fins ( ), some fins ( ) extending practically as far as the outer periphery of the support plate ( ).

Rotating electrical machine, in particular alternator for motor vehicle

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Bry sur Marne, France

Dirk Schulte