Abstract: The invention relates mainly to a rotary electric machine for a motor vehicle. The machine (10) comprises a shaft (13); a rotor (12); a stator (16) comprising a body (25) provided with slots, and a winding (26) inserted into the slots; a first bearing (37) and a second bearing (38) surrounding an assembly formed by the rotor and the stator and each comprising a housing (40, 44) for rotatably mounting the rotor shaft (13). The first bearing comprises a transverse flange (371) and a cylindrical wall (372) of axial orientation derived from an outer periphery of said flange. The second bearing comprises a transverse flange (48) closing the first bearing and at least one rim (63) projecting from the flange and forming a junction area (64) where it joins the first bearing. Furthermore, the stator body has a region (Z1) of shrink-fitting to the cylindrical wall.

Abstract: An electronic assembly for a rotary electric machine for a motor vehicle is disclosed. The electronic assembly includes electronic component blocks having different thermal dissipation needs, the blocks including a power block and a control block. The assembly also includes a device for cooling the blocks and having a protective cover suitable for covering the power and control blocks. The protective cover includes a first set of openings configured to be positioned opposite 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, the base plate protruding with respect to the power block to create a first radial flow of cooling air (F1) for the power block and a second radial flow of cooling air (F2) for the control block.

Abstract: A fan of a rotary electric machine. The fan has an axis of rotation and comprises a plurality of blades (101). At least one characteristic of the blades is variable in the direction of a circumference of the fan around the axis of rotation for at least four consecutive blades. The at least one characteristic is selected from the group comprising a spacing angle between a straight line passing radially via a characteristic point of one of the blades and the axis of rotation of the fan and a straight line passing via a corresponding characteristic point of an adjacent blade and the axis of rotation of the fan, a height of the blade, a length of the blade, and an angle of inclination between a straight line passing via two characteristic points of a blade, and a straight line passing via two corresponding characteristic points of an adjacent blade.

Abstract: The invention relates mainly to a rotary electric machine for a motor vehicle. The machine (10) comprises a shaft (13); a rotor (12); a stator (16) comprising a body (25) provided with slots, and a winding (26) inserted into the slots; a first bearing (37) and a second bearing (38) surrounding an assembly formed by the rotor and the stator and each comprising a housing (40, 44) for rotatably mounting the rotor shaft (13). The first bearing comprises a transverse flange (371) and a cylindrical wall (372) of axial orientation derived from an outer periphery of said flange. The second bearing comprises a transverse flange (48) closing the first bearing and at least one rim (63) projecting from the flange and forming a junction area (64) where it joins the first bearing. Furthermore, the stator body has a region (Z1) of shrink-fitting to the cylindrical wall.

Abstract: The present invention concerns a protective cover (400) designed to cover power, filtering and control modules of an electronic assembly for a rotating electric machine for a motor vehicle.

Abstract: A rotating electrical machine, in particular to an alternator (A) or to an alternator-starter, for a motor vehicle, comprising: a rotor (2) supporting a front fan (23) at the front and a rear fan (24) at the rear, the rotor being rotatable about an axis of rotation, a stator (4) comprising a stator body and at least one winding placed on the stator body, the winding forming front and rear chignons on either side of the stator body, and a casing (1) in which the stator and the rotor are placed.

Abstract: The present invention relates to an electronic assembly (10) for a rotary electric machine (1) for a motor vehicle. Said electronic assembly is characterized by comprising: blocks (100, 200, 300) of electronic components, the blocks having different heat dissipation needs, the blocks being: a power block (100), a filter block (200), a control block (300), and a device (10?) for cooling said blocks (100, 200, 300); said cooling device (10?) comprising: a protective cover (400) suitable for covering the power, filter and control blocks (100, 200, 300), said protective cover comprising openings (401, 402, 403, 404) suitable for generating cooling air flows which differ according to the heat dissipation needs of each of the power (100), control (200) and filter (300) blocks; and cooling elements (101, 201) coupled with said protective cover (400).

Abstract: A fan (100) of a rotary electric machine comprising at least three blades (101) in which at least one property of the blades is, following the circumference of the fan in a given direction, gradual for at least three consecutive blades, the property being chosen from the group including: a spacing angle (102) between a straight line passing through a characteristic point (103) of a blade and an axis of rotation of the fan (104), and a straight line passing through a corresponding characterising point (105) of an adjacent blade and the axis of rotation of the fan; a height of the blade; a length of the blade; and an angle of inclination between a straight line passing through two characteristic points of a blade and a straight line passing through two corresponding characteristic points of an adjacent blade.

Abstract: A fan of a rotary electric machine. The fan has an axis of rotation and comprises a plurality of blades (101). At least one characteristic of the blades is variable in the direction of a circumference of the fan around the axis of rotation for at least four consecutive blades. The at least one characteristic is selected from the group comprising a spacing angle between a straight line passing radially via a characteristic point of one of the blades and the axis of rotation of the fan and a straight line passing via a corresponding characteristic point of an adjacent blade and the axis of rotation of the fan, a height of the blade, a length of the blade, and an angle of inclination between a straight line passing via two characteristic points of a blade, and a straight line passing via two corresponding characteristic points of an adjacent blade.

Abstract: The present invention relates to an electronic assembly (10) for a rotary electric machine (1) for a motor vehicle. Said electronic assembly is characterised by comprising: blocks (100, 200, 300) of electronic components, the blocks having different heat dissipation needs, the blocks being: a power block (100), a filter block (200), a control block (300), and a device (10?) for cooling said blocks (100, 200, 300); said cooling device (10?) comprising: a protective cover (400) suitable for covering the power, filter and control blocks (100, 200, 300), said protective cover comprising openings (401, 402, 403, 404) suitable for generating cooling air flows which differ according to the heat dissipation needs of each of the power (100), control (200) and filter (300) blocks; and cooling elements (101, 201) coupled with said protective cover (400).

Abstract: The present invention concerns a protective cover (400) designed to cover power, filtering and control modules of an electronic assembly for a rotating electric machine for a motor vehicle.

Abstract: An electronic assembly for a rotary electric machine for a motor vehicle is disclosed. The electronic assembly includes electronic component blocks having different thermal dissipation needs, the blocks including a power block and a control block. The assembly also includes a device for cooling the blocks and having a protective cover suitable for covering the power and control blocks. The protective cover includes a first set of openings configured to be positioned opposite 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, the base plate protruding with respect to the power block to create a first radial flow of cooling air (F1) for the power block and a second radial flow of cooling air (F2) for the control block.

Abstract: A rotating electrical machine, in particular to an alternator (A) or to an alternator-starter, for a motor vehicle, comprising: a rotor (2) supporting a front fan (23) at the front and a rear fan (24) at the rear, the rotor being rotatable about an axis of rotation, a stator (4) comprising a stator body and at least one winding placed on the stator body, the winding forming front and rear chignons on either side of the stator body, and a casing (1) in which the stator and the rotor are placed.

Abstract: The disclosure relates to a rotating electrical machine (1), in particular an alternator or an alternator-starter for a motor vehicle. At least one bearing mount (48) is provided with at least one opening (49) opening onto the exterior of the bearing mount. A stator (16) comprising an electric coil (18) is provided. This coil includes a plurality of electric conductors, at least one of which includes an end forming an electrical neutral point of the coil. The machine further includes an electrical insulation member (70) configured to prevent any contact between the bearing mount (48) and said neutral point-forming conductor end. The insulation member extends at least partially through the opening of the bearing mount and is at least partially outside the bearing mount. The electrical insulation member being furthermore configured to rest at least partially on an outer surface (71) of the bearing mount.

Abstract: The invention concerns a ventilation system for a rotary electrical machine of the type comprising a rotor mounted so as to rotate in a stator and a device for cooling by forced flow of a cooling fluid, such as air, provided with at least one fan fixed to the rotor and an independent fan disposed so as to be decisive for cooling at relatively low speeds of rotation of the rotor.

Abstract: The invention concerns a ventilation system for a rotary electrical machine of the type comprising a rotor mounted so as to rotate in a stator and a device for cooling by forced flow of a cooling fluid, such as air, provided with at least one fan fixed to the rotor and an independent fan (10) disposed so as to be decisive for cooling at relatively low speeds of rotation of the rotor. The invention can be used for rotary electrical machines.

Abstract: The disclosure relates to a rotating electrical machine (1), in particular an alternator or an alternator-starter for a motor vehicle. At least one bearing mount (48) is provided with at least one opening (49) opening onto the exterior of the bearing mount. A stator (16) comprising an electric coil (18) is provided. This coil includes a plurality of electric conductors, at least one of which includes an end forming an electrical neutral point of the coil. The machine further includes an electrical insulation member (70) configured to prevent any contact between the bearing mount (48) and said neutral point-forming conductor end. The insulation member extends at least partially through the opening of the bearing mount and is at least partially outside the bearing mount. The electrical insulation member being furthermore configured to rest at least partially on an outer surface (71) of the bearing mount.

Abstract: Protective bearing and cover assembly, for an internally ventilated rotating electrical machine, has centrally an axially orientated axis and comprises on the one hand at least one electronic component carried by the bearing and protected by the cover having at least one radial opening for the passage of air, at least one axial opening for the entry of air, a generally axially orientated skirt and a generally transversely orientated base part, in which is located the axial air inlet opening, which is offset axially in relation to the radial opening for the passage of air, and on the other at least one shaft for the cooling of the generally axially orientated electronic component; the radial opening for the passage of air constitutes the outlet of the cooling shaft whereas the skirt constitutes one of the internal and upper walls of the cooling shaft. The rotating electrical machine consists of an alternator or a starter-alternator or an alterno-starter comprising such an assembly.

Abstract: The invention relates to a heat pipe device (6) for cooling a voltage regulator (2) of a rotating electric machine, comprising an evaporating part (7) which is connected to the voltage regulator (2) of the machine. The invention is suitable for an alternator or an alternator-starter.

Abstract: Protective bearing and cover assembly, for an internally ventilated rotating electrical machine, has centrally an axially orientated axis and comprises on the one hand at least one electronic component carried by the bearing and protected by the cover having at least one radial opening for the passage of air, at least one axial opening for the entry of air, a generally axially orientated skirt and a generally transversely orientated base part, in which is located the axial air inlet opening, which is offset axially in relation to the radial opening for the passage of air, and on the other at least one shaft for the cooling of the generally axially orientated electronic component ; the radial opening for the passage of air constitutes the outlet of the cooling shaft whereas the skirt constitutes one of the internal and upper walls of the cooling shaft. The rotating electrical machine consists of an alternator or a starter-alternator or an alterno-starter comprising such an assembly.