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FR2895324A1 - Motor vehicle under-floor cooling duct includes housing for cooling circuit heat exchanger, shaped to provide air flow through it - Google Patents

Motor vehicle under-floor cooling duct includes housing for cooling circuit heat exchanger, shaped to provide air flow through it Download PDF

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Publication number
FR2895324A1
FR2895324A1 FR0513288A FR0513288A FR2895324A1 FR 2895324 A1 FR2895324 A1 FR 2895324A1 FR 0513288 A FR0513288 A FR 0513288A FR 0513288 A FR0513288 A FR 0513288A FR 2895324 A1 FR2895324 A1 FR 2895324A1
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FR
France
Prior art keywords
housing
heat exchanger
cooling channel
cooling
energy storage
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR0513288A
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French (fr)
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FR2895324B1 (en
Inventor
Philippe Gilotte
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Plastic Omnium SE
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Plastic Omnium SE
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Publication date
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Priority to FR0513288A priority Critical patent/FR2895324B1/en
Publication of FR2895324A1 publication Critical patent/FR2895324A1/en
Application granted granted Critical
Publication of FR2895324B1 publication Critical patent/FR2895324B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-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
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • 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
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/34—Cabin temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The cooling duct, designed to extend beneath the floor (14) of a motor vehicle (10), includes a housing for a cooling circuit heat exchanger (22) and is shaped to provide for an air flow passing between an inlet (18) and outlet (20) through the housing. The duct, which can be made from a thermoplastic material, can be generally U-shaped and formed by an additional layer beneath the floor that can be moved to control the air flow. The housing can also be used for energy storage systems such as a fuel tank or electric batteries.

Description

-1- La présente invention concerne un canal de refroidissement et unThe present invention relates to a cooling channel and a

circuit de refroidissement pour véhicule automobile. Classiquement, un circuit de refroidissement est destiné à réguler en température un moteur, par exemple, un moteur thermique du véhicule automobile, par circulation d'un fluide caloporteur dans le circuit. Généralement, le circuit de refroidissement comprend au moins un échangeur thermique ou radiateur , sur lequel circule de l'air destiné à refroidir le fluide ayant circulé dans le moteur. Habituellement, l'échangeur est conformé pour être logé à l'avant du compartiment moteur du véhicule, pour faire des échanges thermique: avec l'air provenant de l'extérieur. A cet effet, l'avant de la carrosserie est muni d'une ouverture d'entrée d'air dimensionnée selon la surface d'échange nécessaire pour assurer une régulation de température adaptée à la puissance du moteur. Ainsi, selon la puissance du moteur, l'augmentation ou la réduction de la surface d'échange nécessaire requiert une adaptation des dimensions de l'ouverture d'entrée d'air, ce qui crée une diversité de configurations de carrosserie pour un même modèle de véhicule. Or, cette diversité oblige à une gestion de différentes versions des pièces de carrosserie en fonction de la motorisation du véhicule et n'est pas toujours favorable à l'esthétique du véhicule. L'invention a notamment pour but de remédier aux inconvénients précités. A cet effet, l'invention a pour objet un canal de refroidissement adapté pour s'étendre sous un plancher d'un véhicule automobile, caractérisé en ce qu'il comprend un logement dimensionné pour un échangeur d'un circuit de refroidissement du véhicule automobile et en ce qu'il est conformé pour faire circuler de l'air entre une entrée et une sortie du canal en traversant ce logement. Ainsi, le canal de refroidissement permet d'améliorer la circulation de l'air sous plancher, rendant particulièrement efficace le refroidissement d'un fluide caloporteur circulant dans un échangeur logé dans ce canal.  cooling system for a motor vehicle. Conventionally, a cooling circuit is intended to regulate temperature an engine, for example, a thermal engine of the motor vehicle, by circulating a heat transfer fluid in the circuit. Generally, the cooling circuit comprises at least one heat exchanger or radiator, on which circulates air for cooling the fluid having circulated in the engine. Usually, the exchanger is shaped to be housed at the front of the engine compartment of the vehicle, for heat exchange: with the air from outside. For this purpose, the front of the body is provided with an air inlet opening sized according to the exchange surface necessary to provide a temperature control adapted to the power of the engine. Thus, depending on the power of the engine, the increase or reduction of the necessary exchange surface requires an adaptation of the dimensions of the air inlet opening, which creates a diversity of body configurations for the same model of vehicle. However, this diversity requires management of different versions of the body parts according to the motorization of the vehicle and is not always favorable to the aesthetics of the vehicle. The invention is intended in particular to overcome the aforementioned drawbacks. For this purpose, the invention relates to a cooling channel adapted to extend under a floor of a motor vehicle, characterized in that it comprises a housing dimensioned for a heat exchanger of a motor vehicle cooling circuit and in that it is shaped to circulate air between an inlet and an outlet of the channel through this housing. Thus, the cooling channel makes it possible to improve the circulation of the air under the floor, making the cooling of a coolant circulating in an exchanger housed in this channel particularly efficient.

Par ailleurs, la surface d'échange nécessaire au refroidissement du moteur du véhicule peut être avantageusement répartie entre l'avant du compartiment moteur et le logement sous plancher. On peut ainsi maintenir une surface d'échange constante à l'avant du compartiment moteur quelle que soit la motorisation du véhicule, tout en adaptant la surface d'échange sous le plancher en fonction de la motorisation du véhicule. -2-Ceci permet d'avoir une ouverture d'entrée d'air identique à l'avant du véhicule, quelle que soit la motorisation du véhicule automobile. De préférence, le canal de refroidissement est formé par un conduit de section transversale de forme générale en U constituant une doublure de plancher.  Furthermore, the exchange surface required for cooling the vehicle engine can be advantageously distributed between the front of the engine compartment and the underfloor housing. It is thus possible to maintain a constant exchange surface at the front of the engine compartment regardless of the engine of the vehicle, while adapting the exchange surface under the floor depending on the engine of the vehicle. -2-This allows to have an identical air intake opening at the front of the vehicle, regardless of the motorization of the motor vehicle. Preferably, the cooling channel is formed by a generally U-shaped cross section conduit constituting a floor liner.

Ainsi, le plancher et la doublure de plancher délimitent le logement dans lequel circule l'air. En variante, le canal de refroidissement peut être forme par un conduit de section transversale fermée, par exemple en ayant une forme générale cylindrique, et être rapporté sous le plancher.  Thus, the floor and the floor lining define the housing in which the air circulates. Alternatively, the cooling channel may be formed by a conduit of closed cross section, for example having a generally cylindrical shape, and be reported under the floor.

Afin d'adapter le refroidissement du moteur aux conditions de fonctionnement du véhicule automobile, le canal de refroidissement peut éventuellement comprendre des moyens de régulation du flux d'air circulant dans le logement. Il est alors possible d'adapter le débit du flux d'air nécessaire au refroidissement du moteur, en fonction de la température du moteur, par exemple.  In order to adapt the engine cooling to the operating conditions of the motor vehicle, the cooling channel may optionally comprise means for regulating the flow of air flowing in the housing. It is then possible to adapt the flow rate of the air flow necessary for engine cooling, depending on the temperature of the engine, for example.

De façon avantageuse, les moyens de régulation du flux d'air peuvent comprendre des moyens de déplacement de la doublure du plancher permettant de faire varier le débit du flux d'air circulant dans le canal de refroidissement. Le canal de refroidissement peut comprendre un logement qui est apte à contenir des moyens de stockage d'énergie, les moyens de stockage d'énergie étant disposés dans le logement de façon à délimiter une première partie du logement située au-dessus des moyens de stockage d'énergie et une seconde partie du logement située en-dessous des moyens de stockage d'énergie. Les moyens de stockage d'énergie comprennent, par exemple, un réservoir à carburant et/ou une batterie électrique.  Advantageously, the airflow control means may comprise means for moving the lining of the floor to vary the flow rate of the flow of air flowing in the cooling channel. The cooling channel may comprise a housing which is able to contain energy storage means, the energy storage means being arranged in the housing so as to define a first portion of the housing located above the storage means. energy and a second portion of the housing located below the energy storage means. The energy storage means comprise, for example, a fuel tank and / or an electric battery.

De préférence, le canal de refroidissement est réalisé e i un matériau résistant aux températures élevées du circuit de refroidissement, par exemple en un matériau thermoplastique. Dans un mode de réalisation particulier, le canal intègre un échangeur thermique en matériau polymère assemblé avec le conduit formant le canal, par exemple par moulage ou surmoulage. L'invention a également pour objet un circuit de refroidissement pour moteur de véhicule automobile, caractérisé en ce qu'il comprend un échangeur thermique adapté pour un logement d'un canal de refroidissement selon l'invention. Un circuit de refroidissement selon l'invention peut en outre comprendre l'une ou une combinaison des caractéristiques suivantes : -3- l'échangeur thermique est constitué par des premier et second tronçons d'échangeur thermique, le premier tronçon étant adapté pour s'étendre dans la première partie du logement située au-dessus des moyens de stockage d'énergie et le second tronçon étant adapté pour s'étendre dans la seconde partie du logement située au-dessus des moyens de stockage d'énergie ; l'échangeur thermique est conformé en serpentin ; l'échangeur thermique est réalisé en matériau polymère. L'invention a encore pour objet un véhicule automobile, caractérisé en ce qu'il comprend un canal de refroidissement selon l'invention et un circuit de refroidissement selon l'invention. L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins dans lesquels : - la figure 1 est une vue en perspective de dessous d'un véhicule automobile selon un premier mode de réalisation de l'invention ; la figure 2 est une vue en coupe et en perspective d'un plancher du véhicule automobile et d'un canal de refroidissement s'étendant sous le plancher selon un deuxième mode de réalisation de l'invention ; la figure 3 est une vue analogue à celle de la figure 2, la doublure n'étant pas représentée.  Preferably, the cooling channel is made of a material resistant to the high temperatures of the cooling circuit, for example a thermoplastic material. In a particular embodiment, the channel incorporates a heat exchanger made of polymer material assembled with the duct forming the channel, for example by molding or overmolding. The invention also relates to a cooling circuit for a motor vehicle engine, characterized in that it comprises a heat exchanger adapted for housing a cooling channel according to the invention. A cooling circuit according to the invention may further comprise one or a combination of the following features: the heat exchanger consists of first and second heat exchanger sections, the first section being adapted to extend into the first portion of the housing above the energy storage means and the second section being adapted to extend into the second portion of the housing above the energy storage means; the heat exchanger is shaped serpentine; the heat exchanger is made of polymer material. The invention also relates to a motor vehicle, characterized in that it comprises a cooling channel according to the invention and a cooling circuit according to the invention. The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings in which: FIG. 1 is a perspective view from below of a motor vehicle according to a first embodiment of the invention; Figure 2 is a sectional and perspective view of a floor of the motor vehicle and a cooling channel extending under the floor according to a second embodiment of the invention; Figure 3 is a view similar to that of Figure 2, the liner is not shown.

On a représenté sur la figure 1 un véhicule automobile 10 selon l'invention qui comprend un canal de refroidissement 12 s'étendant sous un plancher 14. Selon un premier mode de réalisation de l'invention, le canal de refroidissement 12 est formé par un conduit de section transversale fermée qui comprend un logement 16 et deux ouvertures constituant une entrée 18 et une sortie 20 permettant à un flux F d'air circulant sous le véhicule automobile 10 de pénétrer dans le canal par l'entrée 18, de traverser le logement 16 et de sortir du canal par la sortie 20. Bien entendu, le canal 12 peut comporter d'autres ouvertures constituant des entrées et des sorties du flux d'air F. Ainsi, dans l'exemple décrit, le canal 12 comporte deux ouvertures ménagées sous le canal 12 constituant deux autres sorties 20a du flux d'air F. Le véhicule automobile 10 comprend, de façon classique, un circuit de refroidissement 21 d'un moteur du véhicule. Le logement 16 est dimensionné pour un échangeur thermique 22 du circuit de refroidissement 21, dans lequel circule un fluide caloporteur à refroidir. Le fluide peut être de l'eau, de l'huile ou encore de l'air suralimenté. -4- Dans le deuxième mode de réalisation, illustré sur les figures 2 et 3, le canal de refroidissement 12 est formé par un conduit de section transversale ouverte de forme générale en U constituant une doublure du plancher 14. Plus précisément, dans l'exemple décrit, la doublure 24 s'étend sous un plancher arrière 14A, le plancher arrière 14A s'étendant entre une traverse arrière 26 et un plancher avant 28. Dans ce cas, le logement 16 est délimité d'une part par la doublure de plancher 24 et d'autre part par le plancher arrière 14A. De préférence, le canal de refroidissement 12 est formé dans un matériau thermoplastique résistant à des températures élevées de l'ordre de 105 C.  FIG. 1 shows a motor vehicle 10 according to the invention which comprises a cooling channel 12 extending under a floor 14. According to a first embodiment of the invention, the cooling channel 12 is formed by a conduit of closed cross section which comprises a housing 16 and two openings constituting an inlet 18 and an outlet 20 allowing a flow F of air flowing under the motor vehicle 10 to enter the channel through the inlet 18, to pass through the housing 16 and out of the channel through the outlet 20. Of course, the channel 12 may comprise other openings constituting inputs and outputs of the air flow F. Thus, in the example described, the channel 12 has two openings formed under the channel 12 constituting two other outlets 20a of the air flow F. The motor vehicle 10 comprises, in a conventional manner, a cooling circuit 21 of a vehicle engine. The housing 16 is dimensioned for a heat exchanger 22 of the cooling circuit 21, in which circulates a heat transfer fluid to be cooled. The fluid may be water, oil or supercharged air. In the second embodiment, illustrated in FIGS. 2 and 3, the cooling channel 12 is formed by a U-shaped generally open cross-section conduit constituting a lining of the floor 14. More specifically, in the described example, the lining 24 extends under a rear floor 14A, the rear floor 14A extending between a rear crossmember 26 and a front floor 28. In this case, the housing 16 is delimited on the one hand by the lining of floor 24 and secondly by the rear floor 14A. Preferably, the cooling channel 12 is formed of a thermoplastic material resistant to high temperatures of the order of 105 C.

De façon avantageuse, comme c'est d'ailleurs également le cas pour le premier mode de réalisation, le canal 12 peut éventuellement comporter des moyens de régulation (non représentés) du flux d'air F circulant dans le logement 16. Les moyens de régulation du flux d'air F peuvent corporter, par exemple, des moyens de déplacement de la doublure 24 du plancher 14 selon un axe Z vertical du véhicule automobile 10. Ainsi, en descendant ou en montant la doublure 24 selon cet axe vertical Z, il est possible de faire varier les dimensions des ouvertures constituant l'entrée 18 et la sortie 20 du canal 12 et ainsi d'augmenter ou réduire le débit du flux d'air F circulant dans le canal 12.  Advantageously, as is also the case for the first embodiment, the channel 12 may optionally comprise regulating means (not shown) of the air flow F flowing in the housing 16. The means of regulation of the air flow F can comprise, for example, means for moving the lining 24 of the floor 14 along a vertical axis Z of the motor vehicle 10. Thus, by going down or up the lining 24 along this vertical axis Z, it is possible to vary the dimensions of the openings constituting the inlet 18 and the outlet 20 of the channel 12 and thus increase or reduce the flow rate of the flow of air F flowing in the channel 12.

En variante, les moyens de régulation du flux d'air peuvent comprendre un ventilateur (non représenté). Ce ventilateur peut être placé par exemple dans le logement 16. De préférence, le logement 16 est également apte à contenir des moyens de stockage d'énergie.  Alternatively, the airflow control means may comprise a fan (not shown). This fan can be placed for example in the housing 16. Preferably, the housing 16 is also able to contain energy storage means.

Dans l'exemple décrit, les moyens de stockage d'énergie comprennent un réservoir à carburant 30. En variante, les moyens de stockage d'énergi a peuvent comprendre une batterie électrique (non représentée) destinée à alimenter, par exemple, un moteur électrique (non représenté) du véhicule automobile (10). Ainsi, le flux d'air F circulant dans le canal 12 permet également de refroidir la batterie électrique. Par ailleurs, le logement 16 peut être apte à contenir la batterie et le réservoir à carburant 30. Le réservoir à carburant 30 est disposé dans le logement 16 de façon à délimiter une première partie 32 du logement 16 située au-dessus du réservoir 30 et une seconde partie 34 du logement 16 située en-dessous du réservoir 30, le flux d'air F circulant principalement dans la seconde partie 34.  In the example described, the energy storage means comprise a fuel tank 30. Alternatively, the energy storage means a may comprise an electric battery (not shown) intended to supply, for example, an electric motor (not shown) of the motor vehicle (10). Thus, the flow of air F flowing in the channel 12 also serves to cool the electric battery. Furthermore, the housing 16 may be able to contain the battery and the fuel tank 30. The fuel tank 30 is disposed in the housing 16 so as to define a first portion 32 of the housing 16 situated above the tank 30 and a second portion 34 of the housing 16 located below the tank 30, the air flow F circulating mainly in the second portion 34.

Dans l'exemple décrit, l'échangeur 22 est constitué par des premier 36 et second 38 tronçons d'échangeur thermique. Plus précisément, le premier tronçon d'échangeur 36 -5- est adapté pour s'étendre dans la première partie du logement 16 située au-dessus du réservoir 30 et le second tronçon d'échangeur 38 est adapté pour s'étendre dans la seconde partie 34 du logement 16 située en-dessous du réservoir 30. Ainsi, de façon avantageuse, le fluide caloporteur circule dans le circuit de refroidissement d'abord dans le premier tronçon 36 puis dans le second tronçon 38 de sorte que le fluide caloporteur a une température plus élevée dans le premier 36 que dans le second tronçon d'échangeur 38. Plus particulièrement, le premier tronçon d'échangeur 36 évacue de la chaleur sous le plancher 14, permettant ainsi de chauffer l'intérieur (non représenté) du véhicule automobile 10 et le second tronçon d'échangeur 38 évacue cle la chaleur par circulation du flux d'air F. Afin de réguler le débit du fluide caloporteur circulant dans le premier tronçon d'échangeur 36, le circuit refroidissement 21 peut comporter une vanne de régulation du débit (non représentée), selon la terminologie anglo-saxonne by-pass . Ainsi, en faisant varier le débit de fluide circulant dans le premier tronçon d'échangeur 36, il est possible de réguler la température de l'habitacle. Le premier tronçon d'échangeur 36 est conformé par exemple en tube linéaire, et le second tronçon d'échangeur 38 est conformé en serpentin. Par ailleurs, dans l'exemple décrit, le second tronçon d'échangeur 38 peut être fixé sous le réservoir 30.  In the example described, the heat exchanger 22 consists of first 36 and second 38 heat exchanger sections. More specifically, the first heat exchanger section 36 is adapted to extend in the first part of the housing 16 situated above the tank 30 and the second heat exchanger section 38 is adapted to extend in the second part 34 of the housing 16 located below the reservoir 30. Thus, advantageously, the heat transfer fluid circulates in the cooling circuit first in the first section 36 and then in the second section 38 so that the heat transfer fluid has a higher temperature in the first 36 than in the second exchanger section 38. More particularly, the first heat exchanger section 36 discharges heat under the floor 14, thus heating the interior (not shown) of the motor vehicle 10 and the second heat exchanger section 38 evacuates heat by circulating the flow of air F. In order to regulate the flow rate of the coolant circulating in the first exchanger section 36, the circuit r Cooling 21 may comprise a flow control valve (not shown), according to the English terminology by-pass. Thus, by varying the flow of fluid flowing in the first exchanger section 36, it is possible to regulate the temperature of the passenger compartment. The first exchanger section 36 is shaped for example as a linear tube, and the second exchanger section 38 is formed as a coil. Moreover, in the example described, the second heat exchanger section 38 can be fixed under the tank 30.

Le circuit de refroidissement 21 peut comprendre d'autres vannes (non représentées) de commande afin d'ouvrir ou fermer les deux 1:ronçons d'échangeur 36 et 38 en fonction de la température extérieure, de la température du moteur, de la température de l'habitacle, etc. Il est bien entendu que l'invention n'est pas limitée au mode de réalisation décrit ci- dessus.  The cooling circuit 21 may comprise other control valves (not shown) in order to open or close the two exchanger heads 36 and 38 as a function of the outside temperature, the engine temperature, the temperature of the cockpit, etc. It is understood that the invention is not limited to the embodiment described above.

Claims (15)

REVENDICATIONS 1. Canal de refroidissement (12) adapté pour s'étendre sous un plancher (14) d'un véhicule automobile (10), caractérisé en ce qu'il comprend un logement (16) dimensionné pour un échangeur (22) d'un circuit de refroidissement du véhicule automobile (10) et en ce qu'il est conformé pour faire circuler un flux (F) d'air entre une entrée (18) et une sortie (20) du canal (12) en traversant ce logement (16).  1. Cooling channel (12) adapted to extend under a floor (14) of a motor vehicle (10), characterized in that it comprises a housing (16) sized for a heat exchanger (22) of a cooling circuit of the motor vehicle (10) and in that it is shaped to circulate a flow (F) of air between an inlet (18) and an outlet (20) of the channel (12) while passing through this housing ( 16). 2. Canal de refroidissement (12) selon la revendication 1, formé par un conduit ayant une section transversale fermée.  2. Cooling channel (12) according to claim 1, formed by a duct having a closed cross section. 3. Canal de refroidissement (12) selon la revendication 1, formé par un conduit ayant une section ouverte transversale de forme générale en U constituant une doublure (24) du plancher (14).  3. Cooling channel (12) according to claim 1, formed by a conduit having a transverse open section of generally U-shaped forming a lining (24) of the floor (14). 4. Canal de refroidissement (12) selon l'une quelconque des revendications 1 à 3, comprenant des moyens de régulation du flux d'air (Fcirculant dans le logement (16).  4. Cooling channel (12) according to any one of claims 1 to 3, comprising means for regulating the air flow (Fcirculant in the housing (16). 5. Canal de refroidissement (12) selon les revendications 3 et 4 prises ensembles, dans lequel les moyens de régulation du flux d'air (F) comprennent des moyens de déplacement de la doublure (24) du plancher (14).  5. Cooling channel (12) according to claims 3 and 4 taken together, wherein the air flow control means (F) comprise means for moving the lining (24) of the floor (14). 6. Canal de refroidissement (12) selon l'une quelconque des revendications 1 à 5, dans lequel le logement (16) est apte à contenir des moyens de stockage d'énergie, les moyens de stockage d'énergie étant disposés dans le logement (16) de façon à délimiter une première partie (32) du logement (16) située au-dessus des moyens de stockage d'énergie et une seconde partie (34) Au logement (16) située en-dessous des moyens de stockage d'énergie (30), le flux d'air (F) circulant principalement dans la seconde partie (34) du logement (15).  6. cooling channel (12) according to any one of claims 1 to 5, wherein the housing (16) is adapted to contain energy storage means, the energy storage means being arranged in the housing; (16) to define a first portion (32) of the housing (16) located above the energy storage means and a second portion (34) to the housing (16) located below the energy storage means energy (30), the air flow (F) circulating mainly in the second portion (34) of the housing (15). 7. Canal de refroidissement (12) selon la revendication 6, dans lequel les moyens de stockage d'énergie comprennent un réservoir 2. carburant (30).  The cooling channel (12) of claim 6, wherein the energy storage means comprises a fuel tank (30). 8. Canal de refroidissement (12) selon la revendication 6 ou 7, dans lequel les moyens de stockage d'énergie comprennent une batterie électrique.  8. Cooling channel (12) according to claim 6 or 7, wherein the energy storage means comprises an electric battery. 9. Canal de refroidissement (12) selon l'une quelconque des revendications 1 à 8, étant réalisé en un matériau thermoplastique.  9. cooling channel (12) according to any one of claims 1 to 8, being made of a thermoplastic material. 10. Canal de refroidissement (12) selon l'une quelconque des revendications 1 à 9, intégrant un échangeur (22) en matériau polymère assemblé avec le conduit formant le canal (12).  10. Cooling channel (12) according to any one of claims 1 to 9, integrating a heat exchanger (22) of polymer material assembled with the duct forming the channel (12). 11. Circuit de refroidissement (21) pour moteur de véhicule automobile, caractérisé en ce qu'il comprend un échangeur thermique (22) adapté pour unlogement (16) d'un canal de refroidissement (12) selon l'une quelconque des revendications 1 à 10.  11. Cooling circuit (21) for a motor vehicle engine, characterized in that it comprises a heat exchanger (22) adapted for the housing (16) of a cooling channel (12) according to any one of claims 1 to 10. 12. Circuit de refroidissement (21) selon la revendication 11, dont l'échangeur thermique (22) est adapté pour un logement (16) d'un canal de refroidissement (12) selon la revendication 6, et dans lequel l'échangeur (22) est constitué par des premier (36) et second (38) tronçons d'échangeur thermique, le premier tronçon d'échangeur (36) étant adapté pour s'étendre dans la première partie (32) du logement située au-dessus des moyens de stockage d'énergie et le second tronçon d'échangeur (38) étant adapté pour s'étendre dans la seconde partie (34) du logement (16) située en-dessous des moyens de stockage d'énergie.  Cooling circuit (21) according to claim 11, wherein the heat exchanger (22) is adapted for a housing (16) of a cooling channel (12) according to claim 6, and wherein the exchanger ( 22) is constituted by first (36) and second (38) heat exchanger sections, the first heat exchanger section (36) being adapted to extend into the first portion (32) of the housing located above the heat exchanger sections (36). energy storage means and the second heat exchanger section (38) being adapted to extend into the second portion (34) of the housing (16) below the energy storage means. 13. Circuit de refroidissement (21) selon la revendication 11 ou 12, dans lequel l'échangeur thermique (22) est conformé en serpentin.  Cooling circuit (21) according to claim 11 or 12, wherein the heat exchanger (22) is serpentine shaped. 14. Circuit de refroidissement (21) selon l'une quelconque des revendications 11 à 13, dans lequel l'échangeur (22) est réalisé en matériau polymère.  14. Cooling circuit (21) according to any one of claims 11 to 13, wherein the exchanger (22) is made of polymer material. 15. Véhicule automobile (10), caractérisé en ce qu'il comprend un canal de refroidissement (12) selon l'une quelconque des revendications 1 à 10 et un circuit de refroidissement selon l'une quelconque des revendications 11 à 14.  15. Motor vehicle (10), characterized in that it comprises a cooling channel (12) according to any one of claims 1 to 10 and a cooling circuit according to any one of claims 11 to 14.
FR0513288A 2005-12-23 2005-12-23 COOLING CHANNEL AND COOLING SYSTEM FOR MOTOR VEHICLE Expired - Fee Related FR2895324B1 (en)

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DE102012001459A1 (en) 2012-01-25 2013-07-25 Volkswagen Aktiengesellschaft Device for cooling heat generating element in operating chamber of motor vehicle by flow of fluid, comprises heat exchanger with fluid flow machine, which is arranged downstream such that outflow of fluid strikes on heat generating element
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