WO2018099831A1 - Device for cooling a vehicle propulsion means - Google Patents

Device for cooling a vehicle propulsion means Download PDF

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Publication number
WO2018099831A1
WO2018099831A1 PCT/EP2017/080415 EP2017080415W WO2018099831A1 WO 2018099831 A1 WO2018099831 A1 WO 2018099831A1 EP 2017080415 W EP2017080415 W EP 2017080415W WO 2018099831 A1 WO2018099831 A1 WO 2018099831A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
propulsion
flange
vehicle according
electric motor
Prior art date
Application number
PCT/EP2017/080415
Other languages
French (fr)
Inventor
Chi-Dung Ton
Philippe Cloud
Robert Yu
Original Assignee
Renault S.A.S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault S.A.S filed Critical Renault S.A.S
Priority to EP17801732.3A priority Critical patent/EP3548722A1/en
Priority to CN201780080490.2A priority patent/CN110114564A/en
Publication of WO2018099831A1 publication Critical patent/WO2018099831A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P2001/005—Cooling engine rooms

Definitions

  • Cooling device for a means for propelling a vehicle
  • the present invention is in the field of cooling a propulsion means for a motor vehicle.
  • the invention relates to an optimized cooling device of a propulsion means which may be a powertrain comprising an internal combustion engine or an electric motor driven in voltage by a suitable control means.
  • Solutions for thermal management of a propulsion means often use a motor-fan unit which in the operating state is able to create a forced air flow in a compartment of the vehicle, the latter dedicated to integration of said propulsion means being commonly referred to as engine compartment.
  • a motor-fan unit is usually located at an air inlet opening of the engine compartment, especially at a bumper, so that the movement of the vehicle can generate a natural flow of air through the fan motor unit before crossing the engine compartment.
  • the object of the invention thus consists in a vehicle comprising a cooling device arranged in a compartment receiving a propulsion means which is characterized essentially by the fact that the cooling device comprises means for generating an air flow. and an air guiding means disposed around said propulsion means for forming therewith at least one air flow channel of predetermined thickness, the cooling device having a convergent disposed between an output of air of said means for generating an air flow and the inlet of said air guiding means.
  • a vehicle allows a calibrated distribution of the air flow according to the typology of said propulsion means, said air guiding means being specifically shaped according to the propulsion means.
  • the air leaving the motor-fan unit thus bypasses each of the different parts of the powertrain according to the need for cooling.
  • the air flow can thus be predefined with regard to a need for cooling which may be more or less important depending on the body of said propulsion means to be cooled.
  • the vehicle comprises the following characteristics taken separately or in combination with one another: the convergent is made of a flexible material, in particular from a plastic material;
  • the air guiding means is an envelope made of a rigid material, in particular from a plastic material, and connected to the propulsion means by dedicated fixing interfaces; the envelope comprises at least one flange covering all or part of said propulsion means; said means for generating an air flow is a motor-fan unit assembled immovably to the body structure of the vehicle via a support frame on which the convergent is fixed;
  • the propulsion means extending transversely to the vehicle structure, the convergent comprising an air outlet opening, which may be of approximately elliptical profile, delimited by a flange intended to overlap a fastening flange bordering the air inlet opening of said air guiding means;
  • said propulsion means is a unitary unit comprising an electric motor, a gearbox and a control module containing in particular a power electronics, the gearbox being arranged between the electric motor and the control module so that the gearbox extends facing an approximately central portion of the air inlet opening of said air guiding means;
  • a main flange comprises front and bottom faces arranged facing said propulsion means and a lateral face disposed opposite a free end of the electric motor;
  • a secondary flange is fixed to the main flange, the secondary flange comprising a rear face extending with respect to the electric motor and a lateral face disposed opposite the free end of the electric motor, the secondary flange comprising at least one outlet air evacuation;
  • FIG. 1 is an exploded view of a perspective view of a cooling device intended to be arranged inside a compartment of a vehicle, according to the invention
  • FIG. 2 is a perspective view, in a rear view of a portion of the cooling device covering the propulsion means, according to the invention
  • FIG. 3 represents, in a front perspective view, the part of the cooling device of FIG. 2, according to the invention.
  • Figure 4 is an enlargement of an end portion of said propulsion means of Figure 2 showing an embodiment of the cooling device cooperating with a motor according to the invention.
  • X is the longitudinal direction of the front-rear vehicle rearward
  • Y is the right-left transverse direction at vehicle, which is horizontal and perpendicular to X, directed to the right
  • Z is the vertical direction directed to the top.
  • front, “rear”, “right”, “left”, “horizontal”, “vertical”, “upper” and “lower” are relative to the vehicle or to a part of it and are defined by relative to the direction of movement of the vehicle.
  • a device 1 for cooling a propulsion means preferably comprises a convergent 4 and an air guiding means 3 which wholly or partly surrounds said propulsion means in order to guide the air in the air. cooling as close to areas of the propulsion means requiring cooling by heat exchange.
  • the cooling device 1 comprises means for generating a pulsed air flow which consists of a motor-fan unit (not shown).
  • the latter is mounted on the vehicle structure in a fixed manner.
  • the fan motor unit includes a support frame in which rotates the different blades of a fan.
  • the latter is rotatably mounted around a shaft of an electric motor, which extends for example parallel to the longitudinal axis X.
  • the electric motor can be controlled in frequency modulation so that its rotation speed can be variable and defined according to different control parameters.
  • the motor-fan unit is disposed at an air inlet opening defining an air passage between the outside of the vehicle and the interior of a vehicle compartment.
  • the compartment is for example a motor compartment that can be arranged at the front or rear of the vehicle, for example under the floor of the vehicle.
  • the movement of the vehicle allows the creation of a natural flow of air inside the engine compartment.
  • the rotation of the motor-ventilation unit via a frequency modulation control allows the creation of a forced flow of air inside the engine compartment.
  • the cooling device 1 comprises an air guiding means 3 which generally extends wholly or partly around said propulsion means 2, as will be detailed hereinafter.
  • Such air guiding means 3 comprises an air inlet opening 5 which has a substantially identical surface to that of the air outlet of the motor-fan unit so that the air flow at the inlet opening is approximately the same as the outgoing air flow of the motor-fan unit.
  • Such a design aims to reduce any pressure drop between the outlet and the inlet of the means 3 for guiding air.
  • the air inlet opening 5 of the air guiding means 3 has a profile. sensibly elliptical and horizontal orientation in that the opening 5 has a Z axis height less than its Y axis width.
  • a convergent 4 is arranged between the motor-fan unit and the air-handling means 3 integral with the power unit.
  • Convergent 4 is a conduit for conveying air flowing between the air outlet opening of the motor-fan unit and the air inlet opening 5 of said air guide means 3 around the group. Transmissions.
  • Convergent 4 is of complex shape, comprising a main membrane 44 of any conical profile in order to provide a channel for conveying air between the air outlet of the motor-fan unit and the inlet opening 5 of means 3. air guide.
  • the convergent 4 is shaped so that it comprises at each of its free ends a flange 42, 43 for attachment respectively to the motor-fan unit and said means 3 for guiding air.
  • the front flange 43 is shaped according to a fastening flange bordering the air outlet opening of the motor-fan unit.
  • the rear flange 42 is shaped according to a fastening flange 33 bordering the air inlet opening 5.
  • the convergent 4 is preferably made of flexible material, in particular from a plastic material.
  • the convergent 4 can be made of rubber.
  • the front flanges 43 and rear 42 convergent 4 can be made by overmolding a rigid plastic.
  • the flexible convergent 4 makes it possible to compensate for the different variations in the difference between the motor-fan unit rendered immobile on the body structure and the mobile power unit relative to the body structure during its operation.
  • the vibratory regime of the motor-fan unit may be different to that of the powertrain, the flexible convergent 4 can absorb these differences in vibration.
  • the front flange 43 can be directly fixed by screwing to the fan motor unit.
  • the flange 43 may also comprise fixing tabs for assembly on the fan motor unit.
  • the rear flange 42 may overlap the fastening flange 33 so that the assembly can be achieved by a clamping collar 7 trapping the convergent 4 on the means 3 for guiding air.
  • the cooling device 1 advantageously allows optimized thermal management of the various members constituting the means 2 of propulsion.
  • the air guiding means 3 is an envelope made of a rigid material, in particular from a plastic material.
  • the envelope comprises at least one flange arranged on the propulsion means 2 so that it extends in all or part around the latter to form a cooling air flow channel.
  • said propulsion means 2 is a unitary assembly which comprises an electric motor 21, a gearbox 22 and a control module 23 containing in particular a power electronics.
  • the architecture of said means 2 for propulsion consists of an assembly of the gearbox 22 between the electric motor 21 and the control module 23.
  • the means 2 for propulsion may be a heat engine.
  • the gearbox 22 extends towards an approximately central part, the electric motor 21 and the control module 23 being also arranged in part in direct view of the engine. opening 5.
  • the casing forming said air guiding means 3 comprises a main flange 31.
  • the main flange 31 comprises a front face 310 in which the opening 5 is formed.
  • the opening 5 may comprise a closure wall 8 connecting two portions of the elliptical attachment flange 33.
  • the wall 8 here extends vertically so as to leave only a lower part of the gearbox 22 under the influence of a cooling air flow.
  • the main flange 31 comprises a front face 310 substantially flat in its portion having the opening 5 and in its overlapping side portion of the control module 23. Its side portion overlapping the electric motor is substantially cylindrical in order to fit more closely the motor housing 21.
  • the main flange 31 is shaped according to the electric motor 21 so that it overlaps by at least half of its outer periphery.
  • the main flange 31 may also comprise a side face 312 disposed partially covering a free end of the electric motor 21.
  • the main flange 31 may comprise a lower face 31 1 substantially flat in its parts intended to extend below the gearbox 22 and the control module 23.
  • the free edges of the front faces 310 and lower 31 1 may comprise a rigidity rib 313 extending in a plane parallel to the axis X. Such a stiffness rib is intended in particular to avoid any vibratory effect of the envelope.
  • the air guiding means 3 may also comprise a secondary flange 32 which, once assembled, overlaps the portion of the electric motor 21 not covered by the main flange 31.
  • the arrangement of the flange 32 almost encircles the housing of the electric motor 21 by its peripheral edge.
  • the housing 21 of the electric motor comprises radial fins disposed projecting out of the housing, so that it increases the heat exchange surface between the housing and the flow of cooling air flowing in the channel forming by the assembly of the powertrain envelope.
  • the secondary flange 32 defines a rear wall in which is provided at least one opening 324 for discharging air. As shown in Figure 4, the secondary flange 32 includes two openings 324 adjacent to the Y axis, which improves the calorie evacuation.
  • the secondary flange 32 may also comprise a side face 322 arranged partially covering the free end of the electric motor 21.
  • the lateral faces 312 and 322 respectively belonging to the main and secondary flanges 31 and 31 are joined together to each other by fixing means 34, 35.
  • Fixing said air guide means 3 on the propulsion means 2 is preferably effected by attachment interfaces 6 which can be derived from molding of the electric motor housing 21 or tabs reported and provided for this purpose.
  • the means 34 for mutually fastening the flanges 31 and 32 to one another may comprise tabs projecting out of one of the main and secondary flanges 31 and 32 and engaging in corresponding loops formed in the other of the main flanges 31 and secondary 32.
  • Such sets consisting of a tongue and a corresponding loop may be arranged at the side faces 312 and 322. They may also be arranged at the free edges of the flanges main 31 and secondary 32 which are capable of ensuring a junction of the flanges between them.
  • the attachment means 35 can be of the quick-fastening type and thus constituted from a retaining claw fitted on two edges. peripherals of the main flanges 31 and secondary 32 which are arranged in support against each other. Alternatively, the retaining claw comprises an opening making it possible to clamp the abovementioned edges by a dedicated screw.
  • Such fastening means 34 and 35 allow reversible mounting of said air guiding means 3 on the means 2 for propulsion. Due to its two-part structure, the air guiding means 3 encircles the electric motor 21, which tends to increase the cooling air flow rate. The casing thus formed by said air guiding means 3 significantly improves the cooling of the propulsion means while forming a thermal barrier reducing the effect of thermal radiation to the surrounding elements.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention relates to a vehicle comprising a cooling device (1) arranged in a compartment receiving a propulsion means (2), the cooling device comprising an air flow generating means and an air channelling means (3) arranged around said propulsion means (2) in order to form therewith at least one air flow channel having a predetermined thickness, the cooling device (1) comprising a convergent portion arranged between an air discharge opening of said air flow generating means and an inlet opening (5) of said air channelling means.

Description

Dispositif de refroidissement d'un moyen de propulsion d'un véhicule  Cooling device for a means for propelling a vehicle
La présente invention est du domaine du refroidissement d'un moyen de propulsion pour un véhicule automobile. The present invention is in the field of cooling a propulsion means for a motor vehicle.
Plus particulièrement l'invention concerne un dispositif de refroidissement optimisé d'un moyen de propulsion qui peut être un groupe motopropulseur comportant un moteur à combustion interne ou un moteur électrique piloté en tension par un moyen de régulation approprié.  More particularly, the invention relates to an optimized cooling device of a propulsion means which may be a powertrain comprising an internal combustion engine or an electric motor driven in voltage by a suitable control means.
Les solutions permettant la gestion thermique d'un moyen de propulsion ont souvent recours à un groupe moto-ventilateur qui en l'état de fonctionnement est apte à créer un flux d'air forcé dans un compartiment du véhicule, ce dernier dédié à l'intégration dudit moyen de propulsion étant communément qualifié de compartiment moteur. Un tel groupe moto-ventilateur est habituellement situé au niveau d'une ouverture d'entrée d'air du compartiment moteur, notamment au niveau d'un parechocs, de telle sorte que le déplacement du véhicule puisse engendrer un écoulement naturel de l'air au travers du groupe moto-ventilateur avant de traverser le compartiment moteur.  Solutions for thermal management of a propulsion means often use a motor-fan unit which in the operating state is able to create a forced air flow in a compartment of the vehicle, the latter dedicated to integration of said propulsion means being commonly referred to as engine compartment. Such a motor-fan unit is usually located at an air inlet opening of the engine compartment, especially at a bumper, so that the movement of the vehicle can generate a natural flow of air through the fan motor unit before crossing the engine compartment.
Pour une gamme particulière de véhicules, il est commun d'intégrer un parmi plusieurs types de groupes propulseurs de telle sorte que le taux d'occupation du compartiment moteur varie. De cette situation, il a été relevé qu'une partie de l'air de refroidissement peut circuler dans le compartiment moteur sans pour autant avoir contribué à la régulation thermique dudit groupe motopropulseur. Il a en outre été remarqué que pour atteindre un refroidissement de certaines parties dudit groupe motopropulseur, l'ouverture d'entrée du compartiment moteur est calibrée afin de créer un flux d'air prédéterminé ce qui peut aussi engendrer un refroidissement trop important d'autres parties du groupe propulseur.  For a particular range of vehicles, it is common to integrate one of several types of powertrain so that the occupancy rate of the engine compartment varies. From this situation, it has been noted that a part of the cooling air can circulate in the engine compartment without having contributed to the thermal regulation of said powertrain. It has furthermore been noted that in order to achieve a cooling of certain parts of said powertrain, the inlet opening of the engine compartment is calibrated in order to create a predetermined airflow which can also cause too much cooling of others. parts of the powertrain.
C'est dans cet environnement que l'objet de l'invention est apparu. L'objet de l'invention consiste ainsi en un véhicule comportant un dispositif de refroidissement agencé dans un compartiment recevant un moyen de propulsion qui se caractérise essentiellement par le fait que le dispositif de refroidissement comporte un moyen de génération d'un flux d'air ainsi qu'un moyen de guidage d'air disposé autour dudit moyen de propulsion afin de former avec ce dernier au moins un canal d'écoulement d'air d'épaisseur prédéterminée, le dispositif de refroidissement comportant un convergent disposé entre une sortie d'air dudit moyen de génération d'un flux d'air et l'entrée dudit moyen de guidage d'air. Avantageusement, un tel véhicule permet une distribution calibrée du flux d'air selon la typologie dudit moyen de propulsion, ledit moyen de guidage d'air étant spécifiquement conformé selon le moyen de propulsion. L'air sortant du groupe moto-ventilateur contourne ainsi au plus près chacune des différentes parties du groupe motopropulseur selon le besoin de refroidissement. Le débit d'air peut ainsi être prédéfini au regard d'un besoin de refroidissement qui peut être plus au moins important selon l'organe dudit moyen de propulsion à refroidir. It is in this environment that the object of the invention appeared. The object of the invention thus consists in a vehicle comprising a cooling device arranged in a compartment receiving a propulsion means which is characterized essentially by the fact that the cooling device comprises means for generating an air flow. and an air guiding means disposed around said propulsion means for forming therewith at least one air flow channel of predetermined thickness, the cooling device having a convergent disposed between an output of air of said means for generating an air flow and the inlet of said air guiding means. Advantageously, such a vehicle allows a calibrated distribution of the air flow according to the typology of said propulsion means, said air guiding means being specifically shaped according to the propulsion means. The air leaving the motor-fan unit thus bypasses each of the different parts of the powertrain according to the need for cooling. The air flow can thus be predefined with regard to a need for cooling which may be more or less important depending on the body of said propulsion means to be cooled.
Selon d'autres particularités de l'invention, le véhicule comprend les caractéristiques suivantes prises séparément ou en combinaison entre elles : - le convergent est réalisé dans un matériau souple, notamment à partir d'une matière plastique ; According to other features of the invention, the vehicle comprises the following characteristics taken separately or in combination with one another: the convergent is made of a flexible material, in particular from a plastic material;
- le moyen de guidage d'air est une enveloppe réalisée dans un matériau rigide, notamment à partir d'une matière plastique, et reliée au moyen de propulsion par des interfaces de fixation dédiées ; - l'enveloppe comprend au moins un flasque recouvrant en tout ou partie ledit moyen de propulsion ; - ledit moyen de génération d'un flux d'air est un groupe moto-ventilateur assemblé de manière immobile à la structure de caisse du véhicule via un cadre support sur lequel le convergent est fixé; - The air guiding means is an envelope made of a rigid material, in particular from a plastic material, and connected to the propulsion means by dedicated fixing interfaces; the envelope comprises at least one flange covering all or part of said propulsion means; said means for generating an air flow is a motor-fan unit assembled immovably to the body structure of the vehicle via a support frame on which the convergent is fixed;
- le moyen de propulsion s'étendant transversalement à la structure du véhicule, le convergent comprenant une ouverture de sortie d'air, laquelle peut être de profil approximativement elliptique, délimitée par une collerette destinée à venir à recouvrement d'une bride de fixation bordant l'ouverture d'entrée d'air dudit moyen de guidage d'air ; - the propulsion means extending transversely to the vehicle structure, the convergent comprising an air outlet opening, which may be of approximately elliptical profile, delimited by a flange intended to overlap a fastening flange bordering the air inlet opening of said air guiding means;
- ledit moyen de propulsion est un ensemble unitaire comprend un moteur électrique, un réducteur et un module de commande contenant notamment une électronique de puissance, le réducteur étant disposé entre le moteur électrique et le module de commande de telle sorte que le réducteur s'étend au regard d'une partie approximativement centrale de l'ouverture d'entrée d'air dudit moyen de guidage d'air ; - un flasque principal comprend des faces avant et inférieure disposées au regard dudit moyen de propulsion et une face latérale disposée au regard d'une extrémité libre du moteur électrique ; said propulsion means is a unitary unit comprising an electric motor, a gearbox and a control module containing in particular a power electronics, the gearbox being arranged between the electric motor and the control module so that the gearbox extends facing an approximately central portion of the air inlet opening of said air guiding means; a main flange comprises front and bottom faces arranged facing said propulsion means and a lateral face disposed opposite a free end of the electric motor;
- un flasque secondaire est fixé au flasque principal, le flasque secondaire comprenant une face arrière s'étendant au regard du moteur électrique et une face latérale disposée au regard de l'extrémité libre du moteur électrique, le flasque secondaire comportant au moins une sortie d'évacuation d'air ; a secondary flange is fixed to the main flange, the secondary flange comprising a rear face extending with respect to the electric motor and a lateral face disposed opposite the free end of the electric motor, the secondary flange comprising at least one outlet air evacuation;
D'autres particularités et avantages de l'invention ressortiront à la lecture de la description faite ci-après d'un mode de réalisation particulier de l'invention, donné à titre indicatif mais non limitatif, en référence aux figures annexées dans lesquelles : la figure 1 est selon une vue éclatée, une représentation en perspective d'un dispositif de refroidissement destiné à être agencé à l'intérieur d'un compartiment d'un véhicule, conformément à l'invention, Other features and advantages of the invention will appear on reading the following description of a particular embodiment of the invention, given by way of indication but not limitation, with reference to the appended figures in which: FIG. 1 is an exploded view of a perspective view of a cooling device intended to be arranged inside a compartment of a vehicle, according to the invention,
la figure 2 est une représentation en perspective, selon une vue arrière d'une partie du dispositif de refroidissement recouvrant le moyen de propulsion, selon l'invention,  FIG. 2 is a perspective view, in a rear view of a portion of the cooling device covering the propulsion means, according to the invention,
la figure 3 représente, selon une vue en perspective avant, la partie du dispositif de refroidissement de la figure 2, selon l'invention,  FIG. 3 represents, in a front perspective view, the part of the cooling device of FIG. 2, according to the invention,
la figure 4 est un agrandissement d'une partie d'extrémité dudit moyen de propulsion de la figure 2 représentant un mode de réalisation du dispositif de refroidissement coopérant avec un moteur, selon l'invention.  Figure 4 is an enlargement of an end portion of said propulsion means of Figure 2 showing an embodiment of the cooling device cooperating with a motor according to the invention.
La description qui suit est faite en référence à un trièdre X, Y et Z associé classiquement à un véhicule automobile, dans lequel X est la direction longitudinale avant-arrière du véhicule dirigée vers l'arrière, Y est la direction transversale droite-gauche au véhicule, qui est horizontale et perpendiculaire à X, dirigée vers la droite, et Z est la direction verticale dirigée vers le dessus. Par ailleurs les termes « avant », « arrière », « droit », « gauche », « horizontal », « vertical », supérieur » et « inférieur » sont relatifs au véhicule ou à une partie de celui-ci et sont définis par rapport au sens de déplacement du véhicule. The description which follows is made with reference to a trihedron X, Y and Z conventionally associated with a motor vehicle, wherein X is the longitudinal direction of the front-rear vehicle rearward, Y is the right-left transverse direction at vehicle, which is horizontal and perpendicular to X, directed to the right, and Z is the vertical direction directed to the top. In addition, the terms "front", "rear", "right", "left", "horizontal", "vertical", "upper" and "lower" are relative to the vehicle or to a part of it and are defined by relative to the direction of movement of the vehicle.
En référence à la figure 1 , un dispositif 1 de refroidissement d'un moyen de propulsion, comprend préférentiellement un convergent 4 et un moyen 3 de guidage d'air qui entoure en tout ou partie ledit moyen de propulsion afin de guider l'air de refroidissement au plus près de zones du moyen de propulsion nécessitant un refroidissement par échange thermique. With reference to FIG. 1, a device 1 for cooling a propulsion means preferably comprises a convergent 4 and an air guiding means 3 which wholly or partly surrounds said propulsion means in order to guide the air in the air. cooling as close to areas of the propulsion means requiring cooling by heat exchange.
Le dispositif 1 de refroidissement comprend un moyen de génération d'un flux d'air puisé qui se compose d'un groupe moto-ventilateur (non représenté). Ce dernier est monté sur la structure du véhicule de manière fixe. Plus précisément, le groupe moto-ventilateur comprend un cadre support dans lequel évoluent à rotation les différentes pales d'un ventilateur. Ce dernier est monté à rotation autour d'un arbre d'un moteur électrique, lequel s'étend par exemple parallèlement à l'axe longitudinal X. Le moteur électrique peut être piloté en modulation de fréquence de sorte que sa vitesse de rotation puisse être variable et définie selon différents paramètres de commande. The cooling device 1 comprises means for generating a pulsed air flow which consists of a motor-fan unit (not shown). The latter is mounted on the vehicle structure in a fixed manner. More specifically, the fan motor unit includes a support frame in which rotates the different blades of a fan. The latter is rotatably mounted around a shaft of an electric motor, which extends for example parallel to the longitudinal axis X. The electric motor can be controlled in frequency modulation so that its rotation speed can be variable and defined according to different control parameters.
Le groupe moto-ventilateur est disposé au niveau d'une ouverture d'entrée d'air délimitant un passage d'air entre l'extérieur du véhicule et l'intérieur d'un compartiment du véhicule. Le compartiment est par exemple un compartiment moteur pouvant être disposé à l'avant ou à l'arrière du véhicule, par exemple sous le plancher du véhicule. The motor-fan unit is disposed at an air inlet opening defining an air passage between the outside of the vehicle and the interior of a vehicle compartment. The compartment is for example a motor compartment that can be arranged at the front or rear of the vehicle, for example under the floor of the vehicle.
En l'absence de commande du fonctionnement du groupe moto- ventilateur, le déplacement du véhicule permet la création d'un écoulement naturel de l'air à l'intérieur du compartiment moteur. La mise en rotation du groupe moto-ventilation via une commande en modulation de fréquence permet la création d'un écoulement forcé de l'air à l'intérieur du compartiment moteur. In the absence of control of the operation of the fan motor unit, the movement of the vehicle allows the creation of a natural flow of air inside the engine compartment. The rotation of the motor-ventilation unit via a frequency modulation control allows the creation of a forced flow of air inside the engine compartment.
Le dispositif 1 de refroidissement comprend un moyen 3 de guidage de l'air qui de manière générale s'étend en tout ou partie autour dudit moyen 2 de propulsion, comme cela sera détaillé par la suite. The cooling device 1 comprises an air guiding means 3 which generally extends wholly or partly around said propulsion means 2, as will be detailed hereinafter.
Un tel moyen 3 de guidage de l'air comprend une ouverture 5 d'entrée d'air qui présente une surface sensiblement identique à celle de la sortie d'air du groupe moto-ventilateur de telle sorte que le débit d'air au niveau de l'ouverture 5 d'entrée est approximativement identique au débit d'air sortant du groupe moto-ventilateur. Une telle conception vise à réduire toute perte de charge entre la sortie et l'entrée du moyen 3 de guidage d'air. Compte tenu de l'architecture même dudit moyen 2 de propulsion, lequel s'étend sensiblement le long d'un axe transversal Y du véhicule, l'ouverture 5 d'entrée d'air du moyen 3 de guidage d'air présente un profil sensiblement elliptique et d'orientation horizontale en ce sens que l'ouverture 5 présente une hauteur d'axe Z inférieure à sa largeur d'axe Y. Such air guiding means 3 comprises an air inlet opening 5 which has a substantially identical surface to that of the air outlet of the motor-fan unit so that the air flow at the inlet opening is approximately the same as the outgoing air flow of the motor-fan unit. Such a design aims to reduce any pressure drop between the outlet and the inlet of the means 3 for guiding air. Given the very architecture of said propulsion means 2, which extends substantially along a transverse axis Y of the vehicle, the air inlet opening 5 of the air guiding means 3 has a profile. sensibly elliptical and horizontal orientation in that the opening 5 has a Z axis height less than its Y axis width.
Un convergent 4 est agencé entre le groupe moto-ventilateur et le moyen 3 de guidage d'air solidaire du groupe motopropulseur. Le convergent 4 est un conduit d'acheminement de l'air circulant entre l'ouverture de sortie d'air du groupe moto-ventilateur et l'ouverture 5 d'entrée d'air dudit moyen 3 de guidage d'air autour du groupe motopropulseur. A convergent 4 is arranged between the motor-fan unit and the air-handling means 3 integral with the power unit. Convergent 4 is a conduit for conveying air flowing between the air outlet opening of the motor-fan unit and the air inlet opening 5 of said air guide means 3 around the group. Transmissions.
Le convergent 4 est de forme complexe, comprenant une membrane 44 principale de profil conique quelconque afin de réaliser un canal d'acheminement de l'air entre la sortie d'air du groupe moto-ventilateur l'ouverture d'entrée 5 du moyen 3 de guidage d'air. Convergent 4 is of complex shape, comprising a main membrane 44 of any conical profile in order to provide a channel for conveying air between the air outlet of the motor-fan unit and the inlet opening 5 of means 3. air guide.
Le convergent 4 est conformé de telle sorte qu'il comprend au niveau de chacune de ses extrémités libres une collerette 42, 43 de fixation respectivement au groupe moto-ventilateur et audit moyen 3 de guidage d'air. La collerette avant 43 est conformée selon une bride de fixation bordant l'ouverture de sortie d'air du groupe moto-ventilateur. La collerette arrière 42 est conformée selon une bride 33 de fixation bordant l'ouverture 5 d'entrée d'air. The convergent 4 is shaped so that it comprises at each of its free ends a flange 42, 43 for attachment respectively to the motor-fan unit and said means 3 for guiding air. The front flange 43 is shaped according to a fastening flange bordering the air outlet opening of the motor-fan unit. The rear flange 42 is shaped according to a fastening flange 33 bordering the air inlet opening 5.
Le convergent 4 est préférentiellement réalisé en matériau souple, notamment à partir d'une matière plastique. Le convergent 4 peut être réalisé en caoutchouc. Les collerettes avant 43 et arrière 42 du convergent 4 peuvent être réalisées par un surmoulage d'un plastique rigide. The convergent 4 is preferably made of flexible material, in particular from a plastic material. The convergent 4 can be made of rubber. The front flanges 43 and rear 42 convergent 4 can be made by overmolding a rigid plastic.
Le convergent 4 souple permet de compenser les différentes variations d'écart entre le groupe moto-ventilateur rendu immobile sur la structure de caisse et le groupe motopropulseur mobile par rapport la structure de caisse lors de son fonctionnement. En outre, le régime vibratoire du groupe moto- ventilateur pouvant être différent à celui du groupe motopropulseur, le convergent 4 souple peut absorber ces différences de vibrations. La collerette avant 43 peut être directement fixée par vissage au groupe moto-ventilateur. La collerette 43 peut également comprendre des languettes de fixation pour un assemblage sur le groupe moto-ventilateur. La collerette arrière 42 peut venir à recouvrement de la bride 33 de fixation de telle sorte que l'assemblage puisse être réalisé par un collier 7 de serrage emprisonnant le convergent 4 sur le moyen 3 de guidage d'air. The flexible convergent 4 makes it possible to compensate for the different variations in the difference between the motor-fan unit rendered immobile on the body structure and the mobile power unit relative to the body structure during its operation. In addition, the vibratory regime of the motor-fan unit may be different to that of the powertrain, the flexible convergent 4 can absorb these differences in vibration. The front flange 43 can be directly fixed by screwing to the fan motor unit. The flange 43 may also comprise fixing tabs for assembly on the fan motor unit. The rear flange 42 may overlap the fastening flange 33 so that the assembly can be achieved by a clamping collar 7 trapping the convergent 4 on the means 3 for guiding air.
Le dispositif 1 de refroidissement permet avantageusement une gestion thermique optimisée des différents organes constituant le moyen 2 de propulsion. Pour ce faire, le moyen 3 de guidage d'air est une enveloppe réalisée dans un matériau rigide, notamment à partir d'une matière plastique. The cooling device 1 advantageously allows optimized thermal management of the various members constituting the means 2 of propulsion. To do this, the air guiding means 3 is an envelope made of a rigid material, in particular from a plastic material.
L'enveloppe comprend au moins un flasque agencé sur le moyen 2 de propulsion de telle manière qu'il s'étend en tout ou partie autour de ce dernier afin de former un canal d'écoulement d'air de refroidissement. The envelope comprises at least one flange arranged on the propulsion means 2 so that it extends in all or part around the latter to form a cooling air flow channel.
Selon un mode de réalisation particulier, ledit moyen 2 de propulsion est un ensemble unitaire qui comprend un moteur électrique 21 , un réducteur 22 et un module 23 de commande contenant notamment une électronique de puissance. L'architecture dudit moyen 2 de propulsion consiste en un assemblage du réducteur 22 entre le moteur électrique 21 et le module 23 de commande. Dans une variante de réalisation non représentée, le moyen 2 de propulsion peut être un moteur thermique. According to a particular embodiment, said propulsion means 2 is a unitary assembly which comprises an electric motor 21, a gearbox 22 and a control module 23 containing in particular a power electronics. The architecture of said means 2 for propulsion consists of an assembly of the gearbox 22 between the electric motor 21 and the control module 23. In an alternative embodiment not shown, the means 2 for propulsion may be a heat engine.
Par rapport à l'ouverture 5 d'entrée d'air, le réducteur 22 s'étend au regard d'une partie approximativement centrale, le moteur électrique 21 ainsi que le module 23 de commande étant également disposés en partie au regard direct de l'ouverture 5. With respect to the air intake opening 5, the gearbox 22 extends towards an approximately central part, the electric motor 21 and the control module 23 being also arranged in part in direct view of the engine. opening 5.
Préférentiellement, pour des raisons de montage dudit moyen 3 de guidage d'air sur ledit moyen 2 de propulsion, l'enveloppe formant ledit moyen 3 de guidage d'air comprend un flasque principal 31 . Le flasque principal 31 comprend une face avant 310 dans laquelle est ménagée l'ouverture 5. Preferably, for reasons of mounting said air guiding means 3 on said propulsion means 2, the casing forming said air guiding means 3 comprises a main flange 31. The main flange 31 comprises a front face 310 in which the opening 5 is formed.
Comme cela est visible sur la figure 3, l'ouverture 5 peut comprendre une paroi 8 d'obturation reliant deux portions de la bride 33 elliptique de fixation. La paroi 8 s'étend ici verticalement afin de ne laisser uniquement une partie inférieure du réducteur 22 sous l'influence d'un flux d'air de refroidissement. As can be seen in FIG. 3, the opening 5 may comprise a closure wall 8 connecting two portions of the elliptical attachment flange 33. The wall 8 here extends vertically so as to leave only a lower part of the gearbox 22 under the influence of a cooling air flow.
Le flasque principal 31 comprend une face avant 310 sensiblement plane dans sa partie présentant l'ouverture 5 et dans sa partie latérale venant à recouvrement du module 23 de commande. Sa partie latérale venant à recouvrement du moteur électrique est de forme sensiblement cylindrique afin d'épouser au plus près le carter du moteur 21 . Le flasque principal 31 est conformé selon le moteur 21 électrique de telle sorte qu'il vient à recouvrement d'au moins la moitié de sa périphérie extérieure. Le flasque principal 31 peut également comprendre une face latérale 312 disposée à recouvrement partiel d'une extrémité libre du moteur 21 électrique. The main flange 31 comprises a front face 310 substantially flat in its portion having the opening 5 and in its overlapping side portion of the control module 23. Its side portion overlapping the electric motor is substantially cylindrical in order to fit more closely the motor housing 21. The main flange 31 is shaped according to the electric motor 21 so that it overlaps by at least half of its outer periphery. The main flange 31 may also comprise a side face 312 disposed partially covering a free end of the electric motor 21.
Le flasque principal 31 peut comprendre une face inférieure 31 1 conformée de manière sensiblement plane dans ses parties destinées à s'étendre sous le réducteur 22 et le module 23 de commande. Les bords libres des faces avant 310 et inférieure 31 1 peuvent comprendre une nervure de rigidité 313 s'étendant dans un plan parallèle à l'axe X. Une telle nervure de rigidité est notamment destinée à éviter tout effet vibratoire de l'enveloppe. The main flange 31 may comprise a lower face 31 1 substantially flat in its parts intended to extend below the gearbox 22 and the control module 23. The free edges of the front faces 310 and lower 31 1 may comprise a rigidity rib 313 extending in a plane parallel to the axis X. Such a stiffness rib is intended in particular to avoid any vibratory effect of the envelope.
Le moyen 3 de guidage d'air peut également comprendre un flasque secondaire 32 qui, une fois assemblé, vient à recouvrement de la partie du moteur 21 électrique non couverte par le flasque 31 principale. L'agencement du flasque 32 permet d'encercler en quasi-totalité le carter du moteur 21 électrique par son bord périphérique. Avantageusement le carter du moteur 21 électrique comprend des ailettes radiales disposées en saillie hors du carter, de telle sorte que cela augmente la surface d'échange thermique entre le carter et le flux d'air de refroidissement circulant dans le canal former par l'assemblage de l'enveloppe sur le groupe motopropulseur. The air guiding means 3 may also comprise a secondary flange 32 which, once assembled, overlaps the portion of the electric motor 21 not covered by the main flange 31. The arrangement of the flange 32 almost encircles the housing of the electric motor 21 by its peripheral edge. Advantageously, the housing 21 of the electric motor comprises radial fins disposed projecting out of the housing, so that it increases the heat exchange surface between the housing and the flow of cooling air flowing in the channel forming by the assembly of the powertrain envelope.
Le flasque secondaire 32 définit une paroi arrière dans laquelle est ménagée au moins une ouverture 324 d'évacuation de l'air. Tel que cela est rendu visible à la figure 4, le flasque secondaire 32 comprend deux ouvertures 324 adjacentes par rapport à l'axe Y, ce qui améliore d'autant l'évacuation des calories. The secondary flange 32 defines a rear wall in which is provided at least one opening 324 for discharging air. As shown in Figure 4, the secondary flange 32 includes two openings 324 adjacent to the Y axis, which improves the calorie evacuation.
Le flasque secondaire 32 peut également comprendre une face latérale 322 disposée à recouvrement partiel de l'extrémité libre du moteur 21 électrique. Les faces latérales 312 et 322 appartenant respectivement aux flasques principal 31 et secondaire 32 sont assemblées jointivement l'une à l'autre par des moyens 34, 35 de fixation. La fixation dudit moyen 3 de guidage d'air sur le moyen 2 de propulsion s'opère préférentiel lement par des interfaces de fixation 6 qui peuvent être issue de moulage du carter du moteur 21 électrique ou de pattes rapportées et prévu à cet effet. The secondary flange 32 may also comprise a side face 322 arranged partially covering the free end of the electric motor 21. The lateral faces 312 and 322 respectively belonging to the main and secondary flanges 31 and 31 are joined together to each other by fixing means 34, 35. Fixing said air guide means 3 on the propulsion means 2 is preferably effected by attachment interfaces 6 which can be derived from molding of the electric motor housing 21 or tabs reported and provided for this purpose.
Les moyens 34 de fixation mutuelles des flasques 31 et 32 entre elles peuvent comprendre des languettes s'étendant en saillie hors de l'un d'entre les flasques principal 31 et secondaire 32, et venant en prise dans des boucles correspondantes réalisées dans l'autre d'entre les flasques principal 31 et secondaire 32. De tels ensembles constitués d'une languette et d'une boucle correspondante peuvent être disposés au niveau des faces latérales 312 et 322. Ils peuvent aussi être disposés au niveau des bords libres des flasques principal 31 et secondaire 32 qui sont aptes à assurer une jonction des flasques entre eux. The means 34 for mutually fastening the flanges 31 and 32 to one another may comprise tabs projecting out of one of the main and secondary flanges 31 and 32 and engaging in corresponding loops formed in the other of the main flanges 31 and secondary 32. Such sets consisting of a tongue and a corresponding loop may be arranged at the side faces 312 and 322. They may also be arranged at the free edges of the flanges main 31 and secondary 32 which are capable of ensuring a junction of the flanges between them.
Le moyen 35 de fixation peut être de type à fixation rapide et ainsi constitué à partir d'une griffe de retenue emmanchée sur deux bords périphériques des flasques principal 31 et secondaire 32 qui sont disposées en appui l'un contre l'autre. En variante, la griffe de retenue comprend une ouverture rendant apte le serrage des bords susmentionnés par une vis dédiée. De tels moyens de fixation 34 et 35 permet un montage réversible dudit moyen 3 de guidage d'air sur le moyen 2 de propulsion. De par sa structure en deux parties, le moyen 3 de guidage d'air vient encercler le moteur électrique 21 , ce qui tend à augmenter le débit d'air de refroidissement. L'enveloppe ainsi formée par ledit moyen 3 de guidage d'air améliore significativement le refroidissement du moyen de propulsion tout en formant une barrière thermique réduisant l'effet de radiation thermique vers les éléments environnants. The attachment means 35 can be of the quick-fastening type and thus constituted from a retaining claw fitted on two edges. peripherals of the main flanges 31 and secondary 32 which are arranged in support against each other. Alternatively, the retaining claw comprises an opening making it possible to clamp the abovementioned edges by a dedicated screw. Such fastening means 34 and 35 allow reversible mounting of said air guiding means 3 on the means 2 for propulsion. Due to its two-part structure, the air guiding means 3 encircles the electric motor 21, which tends to increase the cooling air flow rate. The casing thus formed by said air guiding means 3 significantly improves the cooling of the propulsion means while forming a thermal barrier reducing the effect of thermal radiation to the surrounding elements.
Le recours à un tel dispositif de refroidissement permet avantageusement et à moindre cout de réguler plus précisément l'échange thermique entre des organes fonctionnels d'un moyen 2 de propulsion qui doivent être refroidis pour garantir leur fiabilité de fonctionnement. Cela permet aussi de réduire d'autant l'effet de conduction thermique due au fonctionnement dudit moyen de propulsion vers la structure du véhicule. The use of such a cooling device advantageously and at lower cost to more precisely regulate the heat exchange between functional members of a propulsion means 2 which must be cooled in order to guarantee their reliable operation. This also reduces the thermal conduction effect due to the operation of said propulsion means to the vehicle structure.

Claims

REVENDICATIONS
1 . Véhicule comportant un dispositif (1 ) de refroidissement agencé dans un compartiment recevant un moyen (2) de propulsion, caractérisé en ce que le dispositif de refroidissement comporte un moyen de génération d'un flux d'air ainsi qu'un moyen (3) de guidage d'air disposé autour dudit moyen (2) de propulsion afin de former avec ce dernier au moins un canal d'écoulement d'air d'épaisseur prédéterminée, le dispositif (1 ) de refroidissement comportant un convergent (4) disposé entre une ouverture de sortie d'air dudit moyen de génération d'un flux d'air et une ouverture (5) d'entrée dudit moyen de guidage d'air. 1. Vehicle comprising a cooling device (1) arranged in a compartment receiving a means (2) for propulsion, characterized in that the cooling device comprises means for generating an air flow and means (3) air guiding device disposed around said propulsion means (2) to form therewith at least one air flow channel of predetermined thickness, the cooling device (1) having a convergent (4) disposed between an air outlet opening of said air flow generating means and an inlet opening (5) of said air guiding means.
2. Véhicule selon la revendication 1 , caractérisé en ce que le convergent (4) est réalisé dans un matériau souple, notamment à partir d'une matière plastique. 2. Vehicle according to claim 1, characterized in that the convergent (4) is made of a flexible material, in particular from a plastic material.
3. Véhicule selon la revendication 1 ou 2, caractérisé en ce que le moyen (3) de guidage d'air est une enveloppe réalisée dans un matériau rigide, notamment à partir d'une matière plastique, et reliée au moyen (2) de propulsion par des interfaces (6) de fixation dédiées. 3. Vehicle according to claim 1 or 2, characterized in that the means (3) for guiding air is an envelope made of a rigid material, in particular from a plastic material, and connected to the means (2) of propulsion by dedicated interfaces (6).
4. Véhicule selon la revendication précédente, caractérisé en ce que l'enveloppe comprend au moins un flasque (31 ) recouvrant en tout ou partie ledit moyen (2) de propulsion. 4. Vehicle according to the preceding claim, characterized in that the casing comprises at least one flange (31) covering all or part of said means (2) for propulsion.
5. Véhicule selon l'une quelconque des revendications précédentes caractérisé en ce que ledit moyen de génération d'un flux d'air est un groupe moto-ventilateur assemblé de manière immobile à la structure de caisse du véhicule via un cadre support sur lequel le convergent (4) est fixé. 5. Vehicle according to any one of the preceding claims characterized in that said means for generating an air flow is a motor-fan unit assembled immovably to the body structure of the vehicle via a support frame on which the convergent (4) is fixed.
6. Véhicule selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen (2) de propulsion s'étendant transversalement à la structure du véhicule, le convergent (4) comprenant une ouverture de sortie d'air (41 ), laquelle peut être de profil approximativement elliptique, délimitée par une collerette (42) destinée à venir à recouvrement d'une bride (33) de fixation bordant l'ouverture (5) d'entrée d'air dudit moyen (3) de guidage d'air. 6. Vehicle according to any one of the preceding claims, characterized in that the means (2) for propulsion extending transversely to the vehicle structure, the convergent (4) comprising an air outlet opening (41), which may be of approximately elliptical profile, delimited by a flange (42) intended to overlap a flange (33) fastening flanking the air inlet opening (5) of said air guiding means (3).
7. Véhicule selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit moyen (2) de propulsion est un ensemble unitaire comprend un moteur électrique (21 ), un réducteur (22) et un module (23) de commande contenant notamment une électronique de puissance, le réducteur (22) étant disposé entre le moteur électrique (21 ) et le module (23) de commande de telle sorte que le réducteur (22) s'étend au regard d'une partie approximativement centrale de l'ouverture (5) d'entrée d'air dudit moyen (3) de guidage d'air. 7. Vehicle according to any one of the preceding claims, characterized in that said means (2) for propulsion is a unitary assembly comprises an electric motor (21), a gearbox (22) and a control module (23) containing in particular a power electronics, the gearbox (22) being disposed between the electric motor (21) and the control module (23) so that the gear (22) extends towards an approximately central portion of the opening (5) air inlet of said means (3) for guiding air.
8. Véhicule selon la revendication précédente prise en combinaison avec la revendication 4, caractérisé en ce qu'un flasque principal (31 ) comprend des faces avant (310) et inférieure (31 1 ) disposées au regard dudit moyen (2) de propulsion et une face latérale (312) disposée au regard d'une extrémité libre du moteur électrique (21 ). 8. Vehicle according to the preceding claim taken in combination with claim 4, characterized in that a main flange (31) comprises front faces (310) and lower (31 1) disposed opposite said means (2) of propulsion and a lateral face (312) disposed opposite a free end of the electric motor (21).
9. Véhicule selon la revendication 8, caractérisé en ce qu'un flasque secondaire (32) est fixé au flasque principal (31 ) par des moyens (34, 35) de fixation, le flasque secondaire (32) comprenant une face arrière (323) s'étendant au regard du moteur électrique (21 ) et une face latérale (322) disposée au regard de l'extrémité libre du moteur électrique (21 ), le flasque secondaire (32) comportant au moins une sortie d'évacuation (324) d'air. 9. Vehicle according to claim 8, characterized in that a secondary flange (32) is fixed to the main flange (31) by fixing means (34, 35), the secondary flange (32) comprising a rear face (323). ) extending with respect to the electric motor (21) and a lateral face (322) disposed opposite the free end of the electric motor (21), the secondary flange (32) comprising at least one discharge outlet (324). ) of air.
PCT/EP2017/080415 2016-11-29 2017-11-24 Device for cooling a vehicle propulsion means WO2018099831A1 (en)

Priority Applications (2)

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EP17801732.3A EP3548722A1 (en) 2016-11-29 2017-11-24 Device for cooling a vehicle propulsion means
CN201780080490.2A CN110114564A (en) 2016-11-29 2017-11-24 Equipment for cooling down vehicle propulsion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1661649 2016-11-29
FR1661649A FR3059359B1 (en) 2016-11-29 2016-11-29 COOLING DEVICE FOR A VEHICLE PROPELLING MEANS

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EP3548722A1 (en) 2019-10-09
FR3059359B1 (en) 2020-06-26
CN110114564A (en) 2019-08-09

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