WO2018206896A1 - Battery support housing for a hybrid or electric motor vehicle - Google Patents

Battery support housing for a hybrid or electric motor vehicle Download PDF

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Publication number
WO2018206896A1
WO2018206896A1 PCT/FR2018/051151 FR2018051151W WO2018206896A1 WO 2018206896 A1 WO2018206896 A1 WO 2018206896A1 FR 2018051151 W FR2018051151 W FR 2018051151W WO 2018206896 A1 WO2018206896 A1 WO 2018206896A1
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WO
WIPO (PCT)
Prior art keywords
housing
battery
compression means
heat exchanger
wall
Prior art date
Application number
PCT/FR2018/051151
Other languages
French (fr)
Inventor
Claude Besombes
Jean Damien MULLER
Original Assignee
Valeo Systemes Thermiques
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 Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2018206896A1 publication Critical patent/WO2018206896A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to the field of cooling devices for motor vehicle batteries and more particularly to cooling devices arranged in motor vehicle battery support boxes, in particular hybrid or electric vehicles.
  • the new powertrains of motor vehicles use more and more powerful batteries that it is necessary to thermoregulate, especially to cool.
  • these batteries are arranged in a support housing and it is known to have, between these batteries and a wall of this housing, heat exchangers in which circulates a cooling fluid.
  • This cooling fluid makes it possible to recover the calories released by the batteries in operation and thus to ensure a transfer of heat between the battery and the heat exchangers in order to cool these batteries after or during their operation.
  • the heat exchangers In order to ensure optimum cooling of these batteries, the heat exchangers must be arranged in contact with these batteries in the support housing. The dimensioning of these heat exchangers must thus allow them to be housed between the wall of the support housing and a face of the batteries to be cooled, while being arranged in contact with these batteries.
  • these heat exchangers each comprise a hollow body forming one or more channels for the circulation of a refrigerant, these channels being tubes or channels formed in a plate.
  • Each of these bodies has a first flat surface facing the bottom wall of the support housing, and a second flat surface disposed in contact with the batteries. It is understood that it is important that the heat exchangers are disposed closer to the batteries, and advantageously in contact with them, so that the heat transfer is optimal. But the existence of games, both assembly and manufacturing, may cause the contact between the tubes of these 5 heat exchangers and the batteries to be cooled is not assured, at least partially.
  • Cooling devices which comprise a heat exchanger, a spring element and an intermediate part forming, on the one hand, a support for the heat exchanger and, on the other hand, a support for the spring.
  • This intermediate part may in particular comprise a first support part of the exchanger, which has a flat surface 5 serving as a support for the heat exchanger, and a second part for holding the spring.
  • the spring can be attached against this intermediate piece or be formed by an elastic portion of this intermediate piece.
  • Such a design involves complex fabrication of an intermediate part as well as a tedious assembly of each of the components of these cooling devices.
  • an intermediate part requires the manufacture of support cases of substantial dimensions to integrate the device.
  • these support housings are most often arranged under the vehicle frame and must therefore respect a relatively compact dimensioning, these devices are therefore not conducive to being disposed5 under the chassis of a motor vehicle.
  • the present invention is in this context and aims to provide a cooling device for motor vehicle batteries, which is in particular simpler to produce and assemble, which also facilitates maintenance operations and is easily integrated under the vehicle chassis.
  • the object of the present invention thus relates to a battery support case for a motor vehicle comprising at least one battery, at least one heat exchanger arranged in contact with a face of this at least one battery, and a means of compression disposed between the at least one heat exchanger and a wall of the housing and configured to take at least one compression position to press this at least one heat exchanger against the at least one battery.
  • this compression means comprises at least one sealed and deformable bag configured to assume a deployed state, when filled with an expansive foam, in which it takes said compression position.
  • This compression means is configured to be integrated in the casing 5 in an initial retracted state and to take the compression position, in which it participates in pressing the at least one heat exchanger against the at least one battery, when it is in its unfolded state.
  • initial state means a state in which the compression means is empty or contains only a small amount of expansive foam.
  • the expansive foam is injected into the compression means after it has been inserted into the support case. This expansive foam is then configured to occupy an entire available space between the at least one heat exchanger and the wall of the housing and thus exert a compressive force to press the at least one heat exchanger against the face of the less a5 battery. It is thus understood that the compression means performs its function of plating the at least one heat exchanger when it is in its deployed state.
  • a wall of the housing has at least one orifice and the compression means has at least one filling hole, this orifice and this filling hole being arranged facing one another and configured to allow the filling of the compression means by the expansive foam.
  • the foam can thus be injected, via this filling hole and this orifice, in the form of paste or in liquid form directly into the deformable bag and sealed means of compression.
  • the housing can have a plurality of orifices in one or more walls of the housing and the compression means has a plurality of filling holes, each orifice being arranged opposite a filling hole.
  • all the orifices may be formed in the same wall of the housing, and in particular the bottom wall thereof, and that, moreover, these orifices may also be formed indifferently in several walls of the housing, each wall of the housing being able to then have a different or identical number of orifices, since an orifice corresponds to a filling hole made in the compression means.
  • the compression means may consist of a plurality of sealed and deformable bags, each sealed and deformable bag has a filling hole arranged opposite one of the orifices.
  • each sealed bag is disposed opposite a heat exchanger.
  • the compression means consists of a single sealed and deformable bag having a plurality of pockets independent of each other, each pocket having a filling hole arranged opposite one of the orifices. According to this embodiment, each pocket of the single bag is disposed opposite a heat exchanger.
  • the expansive foam filling the compression means in its expanded state is an expansive polyurethane foam.
  • the housing wall against which the compression means is disposed is a closure cover of this housing.
  • the invention also relates to a method of assembling a support housing of at least one battery according to the present invention, comprising at least one step of placing the compression means, in its initial retracted state, against a wall the housing, a step of placing the at least one heat exchanger against the compression means, a step of placing the battery against the at least one heat exchanger, a closing step of the housing comprising the at least one battery, the at least one heat exchanger and the compression means by a cover arranged to come into contact with the battery, a step of injecting the expansive foam into the compression means and a drying step after which the expansive foam occupies an entire available space between the at least one heat exchanger and the wall of the housing.
  • the invention also relates to a method of assembling a support housing of at least one battery according to the present invention comprising at least one step of placing the at least one battery in the housing, a step of setting in place of the at least one heat exchanger and the compression means, in its initial retracted state, against this battery or against a cover arranged to close the housing, a step of closing the housing by the cover, a step of injecting the expansive foam into the compression means and a drying step after which the expansive foam occupies an entire available space between the at least one heat exchanger and the wall of the housing.
  • FIG 1 schematically illustrates a support housing of at least one battery according to a first arrangement of the present invention comprising, in addition to the battery, at least one heat exchanger, here three, and a compression means in an initial state;
  • FIG. 2 diagrammatically illustrates a support case for at least one battery according to a second arrangement of the present invention comprising, in addition to the battery, at least one heat exchanger, here three, and the compression means in an initial state;
  • FIG. 3 schematically illustrates the support case of FIG. 1 with the compression means in an expanded state
  • FIGS. 4 to 5 schematically illustrate a support case with a compression means in an unfolded state similar to that of FIG. 3, the compression means being here produced according to a second and a third embodiment
  • FIG. 1 is a diagrammatic representation of a battery support case 1 comprising, besides the battery 2, a plurality of heat exchangers 3 and a compression means 4 disposed between a wall 5 of the casing 1 and the heat exchangers 3
  • the compression means 4 is configured to be inserted into the support casing 1 in the retracted form, as illustrated in FIGS. 1 and 2, and to assume an expanded state, illustrated in FIGS. Figures 3 to 5, wherein after expansive foam injection, it plates at least one heat exchanger against the battery.
  • Each heat exchanger 3 has a first wall 6 intended to be pressed against a face 7 of the battery 2 and a second wall 8 intended to be in contact with the compression means 4, in its deployed state. More specifically, and as will be described below, the compression means 4 is configured to exert a compression force F against the second wall 8 and directed towards the heat exchangers 3.
  • the compression means 4 comprises at least one sealed and deformable bag configured to be filled with an expansive foam 13.
  • This expansive foam may for example be an expansive polyurethane foam.
  • the compression means 4 In its initial state the compression means 4 is empty or contains a small amount of expansive foam.
  • the housing 1 has at least one orifice 9 formed in one of its walls 5, and more particularly in the bottom wall 51 of the housing 1. It is understood that this orifice 9 could be formed in any of the walls 5 of the housing 1, it being understood that this orifice 9 must be arranged facing the at least one filling hole 10 formed in the compression means 4.
  • the compression means 4 has in turn at least one filling hole 10 configured to allow the expansive foam to be injected into this compression means 4. When the compression means 4 are put into the casing in a state initial retracted, it should be placed in relation to the at least one orifice 9 formed in the wall 5 of the housing 1 and the at least one filling hole 10.
  • the compression means 4 is disposed between a bottom wall 51 of the housing 1 and at least a second wall 8 of a heat exchanger 3. More particularly, a single compression means 4, comprising one or more sealed and deformable bags like this. will be described below, is disposed against the bottom wall and each of the heat exchangers.
  • the bottom wall 51 of the housing is a horizontal wall above which the battery extends
  • the battery 2, the heat exchangers 3, the means 4 and the bottom wall 51 of the housing 1 are stacked in a vertical direction.
  • the heat exchangers 3 are themselves arranged in series, in a direction perpendicular to the stacking direction of the components listed above.
  • Each heat exchanger 3 has ducts 1 1 for the circulation of a refrigerant defined by the first wall 6, the second wall 8 and by intermediate walls connecting the first wall 6 to the second wall 8.
  • the refrigerant circulating in the these ducts is able to capture the calories emitted by the battery 2.
  • the refrigerant circulating in these ducts 1 1 captures the calories emitted by the battery 2, thus allowing the cooling of the latter.
  • the compression means 4 is inserted into the support housing 1 in the so-called “initial” state.
  • This compression means 4 is disposed in the housing against the bottom wall 51 before the heat exchangers 3 are first introduced into the housing, directly on the means compression 4, and then in a second time the battery 2 above the heat exchangers.
  • the means 4 is filled with the expansive foam, via the orifice 9 and the filling hole 10 to take its expanded state.
  • FIGS. 3 to 5 each of these figures illustrating a particular embodiment of the invention.
  • the compression means 4 in its deployed state is configured to occupy an entire available space between the wall 5 of the housing 1 and the heat exchangers 3.
  • the compression means 4 plates the heat exchangers 3 against the face 7 of the battery 2 to be cooled. More precisely, the compression means 4 exert a compression force F on the second walls 8 of the heat exchangers 3, this compression force F being directed towards the heat exchangers 3, which makes it possible to press the first walls 6 of these heat exchangers. 3 against the face 7 of the battery 2 to be cooled, the battery being also held in place in the housing inside the support case by the presence of the cover 14.
  • the expansive foam 13 is injected in the form of paste or in liquid form. In a first step, the expansive foam 13 fills the deformable bag which then extends to take a first defined volume and to fill the available space between the heat exchangers 3 and the wall 5 of the
  • the expansive foam 13 swells and the deformable bag extends to take a second volume corresponding to the deployed state of the compression means 4, plating the heat exchangers 3 against the face 7 of the battery 2 , this battery being retained as previously described by the presence of the lid 14.
  • the fact of pressing leso heat exchangers against the battery ensures a good contact and a good heat exchange surface for cooling the battery, by compensating the possible flatness of the heat exchangers and the battery, and also by eliminating positioning sets of each of these components inside the support housing.
  • the expansive foam 13 contained in the compression means 4 also allows mechanical protection of the heat exchangers 3 and the battery 2, the expansive foam 13 absorbing any shocks to the casing 1 during its use.
  • the expansive foam 13 filling the deo compression means 4 may be thermally insulating, which makes it possible to improve the efficiency of the heat exchangers 3 arranged in contact with the battery 2.
  • the cover 14 closing the housing after insertion of the exchangers and the battery can form a bottom wall of the housing and the compression means 4 is thus disposed between the cover 14 for closing the housing. 1 and the second walls 8 of the heat exchangers 3.
  • the orifice 9 formed in the casing 1 to allow the injection of expansive foam into the bag participating in forming the compression means 4, is provided in the 14.
  • This variant of embodiment has the advantage of facilitating the assembly operations but also maintenance of the housing 1.
  • assembly operations can be facilitated in that the bag forming the compression means 4 and, if appropriate, the heat exchangers can be pre-positioned on the lid before it is brought against the casing, which makes it possible to ensure the proper position of the means of
  • the compression means 4 consists of a single sealed and deformable bag 41 disposed between the bottom wall 51 of the housing 1 and the second walls 8 of the exchangers thermal 3.
  • the expansive foam injection is made in the same bag and this foam spreads in this bag so that it takes in the deployed position support against each deso heat exchangers.
  • the compression means 4 has a single filling hole 10 and the housing 1 has a single orifice 9 for example made in the bottom wall 51.
  • this orifice 9 could be formed in one of the side walls 52 of the casing 1, particularly in the case where the arrangement of the components in the casing 1 is such that the heat exchangers are arranged laterally between a side wall and the casing 1. battery and that the compression means is disposed between these heat exchangers and said side wall, since the filling hole 10 formed in the compression means 4 is disposed laterally opposite the orifice 9. o
  • This first embodiment has the advantage of being able to simultaneously coat several heat exchangers 3, in this case three heat exchangers in the illustrated case, against the battery 2 to cool in a single step of filling and deformation of a single bag 41.
  • the compression means 4 consists of a single sealed bag 42 comprising a plurality of pockets 43, sealed with respect to each other, so that the foam injected into one of the pockets does not extend into the next pocket.
  • the bag 42 forming the compression means is arranged between the heat exchangers and a wall of the housing, here the bottom wall 51, so that each of the pockets 43 is arranged facing a heat exchanger 3.
  • Each of these pockets 43 then has a filling hole 10 of its own.
  • the housing 1 accordingly has a plurality of orifices 9 formed in a wall, and in particular the wall against which the deformable and leakproof bag extends, namely here the bottom wall 51 of this housing 1.
  • the filling holes 10 are arranged facing the orifices 9, as can be seen in FIG. 4. Again, it is understood that these orifices 9 can also be formed in the lateral walls 52 of the casing 1, since the holes
  • the second embodiment of the present invention has the advantage of being able to apply different compression forces F for each heat exchanger 3 since, as mentioned above, each of the pockets 43 of the bag 42 is filled independently of the others, via a filling hole 10 of its own. We can adapt to different sets of manufacturing or positioning of a heat exchanger to another.
  • the compression means 4 consists of a plurality of bags 44. As illustrated, each of these bags 44 is arranged facing a heat exchanger 3 and has a hole of filling 10 of its own.
  • the housing 1 according to this third embodiment then has a plurality of orifices 9, for example formed in the bottom wall 51, each of the bags 44 then being arranged so that each filling hole 10 is opposite one of the orifices 9.
  • This third embodiment again has the advantage of being able to apply different compression forces F for each heat exchanger 3, in accordance with what may have been described in the second embodiment, but it should be noted that Moreover, it has the advantage of being modular and of making maintenance operations on the heat exchangers easier. If a heat exchanger 3 is to be changed independently of the others, it can be removed and replaced by removing only one of the compression means bag.
  • FIGS. 4 and 5 thus illustrate two different embodiments of what has been presented in FIGS. 1 and 3. It is understood that each of these embodiments can be indifferently arranged according to the first or the second arrangement, such that 2 in which the compression means is arranged against a cover attached to the housing, or alternatively according to another arrangement not shown here, for example in which the compression means would be arranged against a side wall of the housing, without go out duo context of the invention.
  • the present invention therefore proposes a battery support box comprising, in addition to the battery, at least one heat exchanger configured to be pressed against one side of the battery by a compression means, this compression means comprising at least one sealed and deformable bag. configured to exert a compressive force on the at least one heat exchanger when in an expanded state, i.e. when filled with expansive foam.
  • the invention can not be limited to the means and configurations described and illustrated herein, and it also extends to any equivalent means or configurations and to any technically operating combination of such means.
  • the shape and arrangement of the compression means can be modified without harming the invention, inasmuch as they fulfill the functionalities described herein.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

A battery (2) support housing (1) for a motor vehicle comprises at least one battery (2), at least one heat exchanger (3) arranged in contact with a surface (7) of the at least one battery (2), as well as a compression means (4) arranged between the at least one heat exchanger (3) and a wall (5) of the housing (1) and configured to take up at least one compression position to press said at least one heat exchanger (3) against the at least one battery (2). The compression means (4) comprises at least one sealed bag (41, 42, 44) that is deformable, configured to move into a deployed state when it is filled with an expansive foam (13), whereupon it moves into the compression position.

Description

BOITIER DE SUPPORT DE BATTERIE POUR VEHICULE AUTOMOBILE  BATTERY SUPPORT CASE FOR MOTOR VEHICLE
HYBRIDE OU ELECTRIQUE  HYBRID OR ELECTRIC
L'invention a trait au domaine des dispositifs de refroidissement pour des batteries de véhicule automobile et plus particulièrement des dispositifs de refroidissement disposés dans des boîtiers de support de batterie de véhicule automobile, notamment de véhicule hybride ou électrique. The invention relates to the field of cooling devices for motor vehicle batteries and more particularly to cooling devices arranged in motor vehicle battery support boxes, in particular hybrid or electric vehicles.
Les nouvelles motorisations électriques des véhicules automobiles font appel à des batteries de plus en plus puissantes qu'il est nécessaire de thermo- réguler, notamment de refroidir. The new powertrains of motor vehicles use more and more powerful batteries that it is necessary to thermoregulate, especially to cool.
Classiquement ces batteries sont agencées dans un boîtier de support et il est connu de disposer, entre ces batteries et une paroi de ce boîtier, des échangeurs thermiques dans lesquels circule un fluide de refroidissement. Ce fluide de refroidissement permet de récupérer des calories dégagées par les batteries en fonctionnement et d'assurer ainsi un transfert de chaleur entre la batterie et les échangeurs thermiques afin de refroidir ces batteries après ou au cours de leur fonctionnement. Conventionally these batteries are arranged in a support housing and it is known to have, between these batteries and a wall of this housing, heat exchangers in which circulates a cooling fluid. This cooling fluid makes it possible to recover the calories released by the batteries in operation and thus to ensure a transfer of heat between the battery and the heat exchangers in order to cool these batteries after or during their operation.
Afin d'assurer un refroidissement optimal de ces batteries, les échangeurs thermiques doivent être agencés au contact de ces batteries, dans le boîtier de support. Le dimensionnement de ces échangeurs thermiques doit ainsi leur permettre d'être logés entre la paroi du boîtier de support et une face des batteries à refroidir, tout en étant disposés au contact de ces batteries. In order to ensure optimum cooling of these batteries, the heat exchangers must be arranged in contact with these batteries in the support housing. The dimensioning of these heat exchangers must thus allow them to be housed between the wall of the support housing and a face of the batteries to be cooled, while being arranged in contact with these batteries.
De manière connue, ces échangeurs thermiques comportent chacun un corps creux formant un ou plusieurs canaux pour la circulation d'un fluide réfrigérant, ces canaux pouvant être des tubes ou des canaux formés dans une plaque. Chacun de ces corps présente une première surface plane tournée vers la paroi de fond du boîtier support, et une deuxième surface plane disposée au contact des batteries. On comprend qu'il importe que les échangeurs thermiques soient disposés au plus près des batteries, et avantageusement au contact de celles-ci, pour que le transfert de chaleur soit optimal. Mais l'existence de jeux, aussi bien de montage que de fabrication, peut faire que le contact entre les tubes de ces 5 échangeurs thermiques et les batteries à refroidir n'est pas assuré, au moins partiellement. In known manner, these heat exchangers each comprise a hollow body forming one or more channels for the circulation of a refrigerant, these channels being tubes or channels formed in a plate. Each of these bodies has a first flat surface facing the bottom wall of the support housing, and a second flat surface disposed in contact with the batteries. It is understood that it is important that the heat exchangers are disposed closer to the batteries, and advantageously in contact with them, so that the heat transfer is optimal. But the existence of games, both assembly and manufacturing, may cause the contact between the tubes of these 5 heat exchangers and the batteries to be cooled is not assured, at least partially.
Pour pallier à cet inconvénient, des moyens de rappel élastique peuvent être mis en œuvre afin de plaquer ces échangeurs thermiques contre les batteries du boîtier de support. o On connaît ainsi des dispositifs de refroidissement qui comprennent un échangeur thermique, un élément formant ressort et une pièce intermédiaire formant d'une part support pour l'échangeur thermique et d'autre part support pour le ressort. Cette pièce intermédiaire peut notamment comporter une première partie de support de l'échangeur, qui présente une surface plane5 servant de support à l'échangeur thermique, et une deuxième partie permettant la tenue du ressort. Le ressort peut être rapporté contre cette pièce intermédiaire ou bien être formé par une portion élastique de cette pièce intermédiaire. To overcome this drawback, resilient return means can be implemented to press these heat exchangers against the batteries of the support housing. Cooling devices are thus known which comprise a heat exchanger, a spring element and an intermediate part forming, on the one hand, a support for the heat exchanger and, on the other hand, a support for the spring. This intermediate part may in particular comprise a first support part of the exchanger, which has a flat surface 5 serving as a support for the heat exchanger, and a second part for holding the spring. The spring can be attached against this intermediate piece or be formed by an elastic portion of this intermediate piece.
Une telle conception implique une fabrication complexe d'une pièce intermédiaire ainsi qu'un assemblage fastidieux de chacun des composants deo ces dispositifs de refroidissement. De plus, une telle pièce intermédiaire impose la fabrication de boîtiers de support aux dimensions conséquentes permettant d'intégrer le dispositif. Or, ces boîtiers de support sont le plus souvent agencés sous le châssis du véhicule et doivent donc respecter un dimensionnement relativement compact, ces dispositifs sont donc peu propices à être disposés5 sous le châssis de véhicule automobile. Par ailleurs, il convient de dimensionner avec précision chacun des composants et d'assurer la position de ceux-ci lors de l'assemblage du boîtier afin que le ressort puisse correctement porter contre l'échangeur thermique, le cas échéant par l'intermédiaire Such a design involves complex fabrication of an intermediate part as well as a tedious assembly of each of the components of these cooling devices. In addition, such an intermediate part requires the manufacture of support cases of substantial dimensions to integrate the device. However, these support housings are most often arranged under the vehicle frame and must therefore respect a relatively compact dimensioning, these devices are therefore not conducive to being disposed5 under the chassis of a motor vehicle. Furthermore, it is necessary to dimension each component accurately and to ensure the position thereof when assembling the housing so that the spring can properly wear against the heat exchanger, if necessary via
La présente invention s'inscrit dans ce contexte et vise à proposer uno dispositif de refroidissement pour batteries de véhicule automobile, qui soit notamment plus simple à produire et à assembler, qui permette également de faciliter les opérations de maintenance et qui soit facilement intégrable sous le châssis de véhicule. The present invention is in this context and aims to provide a cooling device for motor vehicle batteries, which is in particular simpler to produce and assemble, which also facilitates maintenance operations and is easily integrated under the vehicle chassis.
L'objet de la présente invention concerne ainsi un boîtier de support de 5 batterie pour véhicule automobile comprenant au moins une batterie, au moins un échangeur thermique agencé au contact d'une face de cette au moins une batterie, ainsi qu'un moyen de compression disposé entre l'au moins un échangeur thermique et une paroi du boîtier et configuré pour prendre au moins une position de compression pour plaquer cet au moins un échangeur thermiqueo contre l'au moins une batterie. Selon l'invention, ce moyen de compression comprend au moins un sac étanche et déformable configuré pour prendre un état déployé, lorsqu'il est rempli avec une mousse expansive, dans lequel il prend ladite position de compression. The object of the present invention thus relates to a battery support case for a motor vehicle comprising at least one battery, at least one heat exchanger arranged in contact with a face of this at least one battery, and a means of compression disposed between the at least one heat exchanger and a wall of the housing and configured to take at least one compression position to press this at least one heat exchanger against the at least one battery. According to the invention, this compression means comprises at least one sealed and deformable bag configured to assume a deployed state, when filled with an expansive foam, in which it takes said compression position.
Ce moyen de compression est configuré pour être intégré dans le boîtier5 dans un état initial rétracté et pour prendre la position de compression, dans laquelle il participe à plaquer l'au moins un échangeur thermique contre l'au moins une batterie, lorsqu'il est dans son état déployé. This compression means is configured to be integrated in the casing 5 in an initial retracted state and to take the compression position, in which it participates in pressing the at least one heat exchanger against the at least one battery, when it is in its unfolded state.
On entend par « état initial », un état dans lequel le moyen de compression est vide ou ne contient qu'une faible quantité de mousse expansive. La mousseo expansive est injectée dans le moyen de compression après que celui-ci ait été inséré dans le boîtier de support. Cette mousse expansive est alors configurée pour occuper tout un espace disponible entre l'au moins un échangeur thermique et la paroi du boîtier et pour ainsi exercer une force de compression permettant de plaquer l'au moins un échangeur thermique contre la face de l'au moins une5 batterie. On comprend ainsi que le moyen de compression n'exerce sa fonction de plaquage de l'au moins un échangeur thermique que lorsqu'il est dans son état déployé. The term "initial state" means a state in which the compression means is empty or contains only a small amount of expansive foam. The expansive foam is injected into the compression means after it has been inserted into the support case. This expansive foam is then configured to occupy an entire available space between the at least one heat exchanger and the wall of the housing and thus exert a compressive force to press the at least one heat exchanger against the face of the less a5 battery. It is thus understood that the compression means performs its function of plating the at least one heat exchanger when it is in its deployed state.
On peut selon l'invention s'assurer de plaquer l'au moins un échangeur thermique contre la batterie avec une force suffisante pour obtenir une surfaceo de contact maximale pour le refroidissement de la batterie, sans qu'il soit nécessaire de prévoir à l'origine un espace trop important entre la paroi du boîtier et les échangeurs thermiques, ce qui permet de réduire considérablement l'encombrement des boîtiers de support et facilite ainsi leur intégration sous un châssis de véhicule, où ils sont le plus souvent destinés à être agencés. Selon une caractéristique de la présente invention, une paroi du boîtier présente au moins un orifice et le moyen de compression présente au moins un trou de remplissage, cet orifice et ce trou de remplissage étant agencés en regard l'un de l'autre et configurés pour permettre le remplissage du moyen de compression par la mousse expansive. La mousse peut ainsi être injectée, via ce trou de remplissage et cet orifice, sous forme de pate ou sous forme liquide directement à l'intérieur du sac déformable et étanche formant moyen de compression. According to the invention, it is possible to ensure that the at least one heat exchanger is pressed against the battery with sufficient force to obtain a maximum contact surface for cooling the battery, without it being necessary to necessary to initially provide too much space between the wall of the housing and the heat exchangers, which significantly reduces the size of the support housings and facilitates their integration under a vehicle chassis, where they are the most often intended to be arranged. According to a characteristic of the present invention, a wall of the housing has at least one orifice and the compression means has at least one filling hole, this orifice and this filling hole being arranged facing one another and configured to allow the filling of the compression means by the expansive foam. The foam can thus be injected, via this filling hole and this orifice, in the form of paste or in liquid form directly into the deformable bag and sealed means of compression.
Selon une caractéristique de la présente invention, le boîtier peut présenter une pluralité d'orifices ménagés dans une ou plusieurs parois du boîtier et le moyen de compression présente une pluralité de trous de remplissage, chaque orifice étant agencé en regard d'un trou de remplissage. On comprend que tous les orifices peuvent être ménagés dans une même paroi du boîtier, et notamment la paroi de fond de celui-ci, et que par ailleurs, ces orifices peuvent également être ménagés indifféremment dans plusieurs parois du boîtier, chaque paroi du boîtier pouvant alors présenter un nombre d'orifices différent ou identique, dès lors qu'un orifice correspond à un trou de remplissage réalisé dans le moyen de compression. According to a feature of the present invention, the housing can have a plurality of orifices in one or more walls of the housing and the compression means has a plurality of filling holes, each orifice being arranged opposite a filling hole. . It will be understood that all the orifices may be formed in the same wall of the housing, and in particular the bottom wall thereof, and that, moreover, these orifices may also be formed indifferently in several walls of the housing, each wall of the housing being able to then have a different or identical number of orifices, since an orifice corresponds to a filling hole made in the compression means.
Selon un mode de réalisation alternatif de l'invention, le moyen de compression peut consister en une pluralité de sacs étanches et déformables, chaque sac étanche et déformable comporte un trou de remplissage agencé en regard de l'un des orifices. Dans ce contexte, chaque sac étanche est disposé en regard d'un échangeur thermique. Avantageusement, ce mode de réalisation permet donc d'avoir accès à chaque échangeur thermique, indépendamment des autres, permettant ainsi de faciliter les opérations de maintenance, notamment lorsqu'il est nécessaire de changer l'un de ces échangeurs thermiques. Selon un autre mode de réalisation de la présente invention, le moyen de compression consiste en un unique sac étanche et déformable présentant une pluralité de poches indépendantes les unes des autres, chaque poche comportant un trou de remplissage agencé en regard d'un des orifices. Selon ce 5 mode de réalisation, chaque poche de l'unique sac est disposée en regard d'un échangeur thermique. According to an alternative embodiment of the invention, the compression means may consist of a plurality of sealed and deformable bags, each sealed and deformable bag has a filling hole arranged opposite one of the orifices. In this context, each sealed bag is disposed opposite a heat exchanger. Advantageously, this embodiment therefore makes it possible to have access to each heat exchanger, independently of the others, thus making it possible to facilitate maintenance operations, in particular when it is necessary to change one of these heat exchangers. According to another embodiment of the present invention, the compression means consists of a single sealed and deformable bag having a plurality of pockets independent of each other, each pocket having a filling hole arranged opposite one of the orifices. According to this embodiment, each pocket of the single bag is disposed opposite a heat exchanger.
On comprend ainsi que ces deux modes de réalisation permettent d'adapter la pression appliquée sur chaque échangeur thermique en injectant des quantités de mousse expansive différentes dans chaque sac ou dans chaque îo poche de l'unique sac. It will thus be understood that these two embodiments make it possible to adapt the pressure applied to each heat exchanger by injecting different amounts of expansive foam into each bag or into each pocket of the single bag.
Selon une caractéristique de la présente invention, la mousse expansive remplissant le moyen de compression dans son état déployé est une mousse polyuréthane expansive. According to a feature of the present invention, the expansive foam filling the compression means in its expanded state is an expansive polyurethane foam.
Selon une caractéristique de la présente invention, la paroi du boîtier contre i5 laquelle est disposé le moyen de compression est un couvercle de fermeture de ce boîtier. According to a feature of the present invention, the housing wall against which the compression means is disposed is a closure cover of this housing.
Cette caractéristique permet notamment de faciliter les opérations de maintenance et de remplacement des échangeurs thermiques. Il suffit d'ôter le couvercle et le moyen de compression pour avoir accès à ces échangeurso thermiques. Une fois le remplacement du/des échangeurs thermiques effectué, il suffit de disposer un nouveau sac et de le remplir à nouveau de mousse expansive. This characteristic makes it possible in particular to facilitate maintenance operations and replacement of heat exchangers. Just remove the cover and the compression means to access these heat exchangers. Once the replacement of the heat exchangers has been carried out, all you have to do is dispose of a new bag and refill it with expansive foam.
L'invention concerne également un procédé d'assemblage d'un boîtier de support d'au moins une batterie selon la présente invention, comprenant au5 moins une étape de mise en place du moyen de compression, dans son état initial rétracté, contre une paroi du boîtier, une étape de mise en place de l'au moins un échangeur thermique contre le moyen de compression, une étape de mise en place de la batterie contre l'au moins un échangeur thermique, une étape de fermeture du boîtier comprenant l'au moins une batterie, l'au moins un échangeur thermique et le moyen de compression par un couvercle agencé pour venir au contact de la batterie, une étape d'injection de la mousse expansive dans le moyen de compression et une étape de séchage après laquelle la mousse expansive occupe tout un espace disponible entre l'au moins un échangeur thermique et la paroi du boîtier. The invention also relates to a method of assembling a support housing of at least one battery according to the present invention, comprising at least one step of placing the compression means, in its initial retracted state, against a wall the housing, a step of placing the at least one heat exchanger against the compression means, a step of placing the battery against the at least one heat exchanger, a closing step of the housing comprising the at least one battery, the at least one heat exchanger and the compression means by a cover arranged to come into contact with the battery, a step of injecting the expansive foam into the compression means and a drying step after which the expansive foam occupies an entire available space between the at least one heat exchanger and the wall of the housing.
L'invention concerne encore un procédé d'assemblage d'un boîtier de support d'au moins une batterie selon la présente invention comprenant au moins une étape de mise en place de l'au moins une batterie dans le boîtier, une étape de mise en place de l'au moins un échangeur thermique et du moyen de compression, dans son état initial rétracté, contre cette batterie ou contre un couvercle agencé pour venir fermer le boîtier, une étape de fermeture du boîtier par le couvercle, une étape d'injection de la mousse expansive dans le moyen de compression et une étape de séchage après laquelle la mousse expansive occupe tout un espace disponible entre l'au moins un échangeur thermique et la paroi du boîtier. The invention also relates to a method of assembling a support housing of at least one battery according to the present invention comprising at least one step of placing the at least one battery in the housing, a step of setting in place of the at least one heat exchanger and the compression means, in its initial retracted state, against this battery or against a cover arranged to close the housing, a step of closing the housing by the cover, a step of injecting the expansive foam into the compression means and a drying step after which the expansive foam occupies an entire available space between the at least one heat exchanger and the wall of the housing.
D'autres détails caractéristiques et avantages ressortiront plus clairement à la lecture de la description détaillée donnée ci-après à titre indicatif en relation avec les différents modes de réalisation illustrés sur les figures suivantes : Other characteristic details and advantages will emerge more clearly on reading the detailed description given below as an indication in relation to the various embodiments illustrated in the following figures:
-la figure 1 illustre schématiquement un boîtier de support d'au moins une batterie selon un premier agencement de la présente invention comprenant, outre la batterie, au moins un échangeur thermique, ici trois, et un moyen de compression dans un état initial ; FIG 1 schematically illustrates a support housing of at least one battery according to a first arrangement of the present invention comprising, in addition to the battery, at least one heat exchanger, here three, and a compression means in an initial state;
-la figure 2 illustre schématiquement un boîtier de support d'au moins une batterie selon un deuxième agencement de la présente invention comprenant, outre la batterie, au moins un échangeur thermique, ici trois, et le moyen de compression dans un état initial ; FIG. 2 diagrammatically illustrates a support case for at least one battery according to a second arrangement of the present invention comprising, in addition to the battery, at least one heat exchanger, here three, and the compression means in an initial state;
-la figure 3 illustre schématiquement le boîtier de support de la figure 1 avec le moyen de compression dans un état déployé ; -les figures 4 à 5 illustrent schématiquement un boîtier de support avec un moyen de compression dans un état déployé similaire à celui de la figure 3, le moyen de compression étant ici réalisé selon un deuxième et un troisième mode de réalisation. La figure 1 est une représentation schématique d'un boîtier de support 1 de batterie 2 comprenant, outre la batterie 2, une pluralité d'échangeurs thermiques 3 et un moyen de compression 4 disposé entre une paroi 5 du boîtier 1 et les échangeurs thermiques 3. Selon l'invention, le moyen de compression 4 est configuré pour être inséré à l'origine dans le boîtier de support 1 sous forme rétractée, tel qu'illustré sur les figures 1 et 2, et pour prendre un état déployé, illustré sur les figures 3 à 5, dans lequel, après injection de mousse expansive, il plaque au moins un échangeur thermique contre la batterie. FIG. 3 schematically illustrates the support case of FIG. 1 with the compression means in an expanded state; FIGS. 4 to 5 schematically illustrate a support case with a compression means in an unfolded state similar to that of FIG. 3, the compression means being here produced according to a second and a third embodiment. FIG. 1 is a diagrammatic representation of a battery support case 1 comprising, besides the battery 2, a plurality of heat exchangers 3 and a compression means 4 disposed between a wall 5 of the casing 1 and the heat exchangers 3 According to the invention, the compression means 4 is configured to be inserted into the support casing 1 in the retracted form, as illustrated in FIGS. 1 and 2, and to assume an expanded state, illustrated in FIGS. Figures 3 to 5, wherein after expansive foam injection, it plates at least one heat exchanger against the battery.
Chaque échangeur thermique 3 présente une première paroi 6 destinée à être plaquée contre une face 7 de la batterie 2 et une deuxième paroi 8 destinée à être en contact avec le moyen de compression 4, dans son état déployé. Plus précisément, et tel que cela sera décrit ci-après, le moyen de compression 4 est configuré pour exercer une force de compression F contre la deuxième paroi 8 et dirigée vers les échangeurs thermiques 3. Each heat exchanger 3 has a first wall 6 intended to be pressed against a face 7 of the battery 2 and a second wall 8 intended to be in contact with the compression means 4, in its deployed state. More specifically, and as will be described below, the compression means 4 is configured to exert a compression force F against the second wall 8 and directed towards the heat exchangers 3.
Selon la présente invention, le moyen de compression 4 comprend au moins un sac étanche et déformable configuré pour être rempli avec une mousse expansive 13. Cette mousse expansive peut par exemple être une mousse polyuréthane expansive. Dans son état initial le moyen de compression 4 est vide ou contient une faible quantité de mousse expansive. According to the present invention, the compression means 4 comprises at least one sealed and deformable bag configured to be filled with an expansive foam 13. This expansive foam may for example be an expansive polyurethane foam. In its initial state the compression means 4 is empty or contains a small amount of expansive foam.
Le boîtier 1 présente au moins un orifice 9 ménagé dans l'une de ses parois 5, et plus particulièrement dans la paroi de fond 51 du boîtier 1 . On comprend que cet orifice 9 pourrait être ménagé dans n'importe laquelle des parois 5 du boîtier 1 , étant entendu que cet orifice 9 doit être disposé en regard de l'au moins un trou de remplissage 10 ménagé dans le moyen de compression 4. Le moyen de compression 4 présente quant à lui au moins un trou de remplissage 10 configuré pour permettre l'injection de la mousse expansive dans ce moyen de compression 4. Lors de la mise en place du moyen de compression 4 dans le boîtier dans un état initial rétracté, il convient de mettre en regard l'au moins un orifice 9 ménagé dans la paroi 5 du boîtier 1 et l'au moins un trou de remplissage 10. The housing 1 has at least one orifice 9 formed in one of its walls 5, and more particularly in the bottom wall 51 of the housing 1. It is understood that this orifice 9 could be formed in any of the walls 5 of the housing 1, it being understood that this orifice 9 must be arranged facing the at least one filling hole 10 formed in the compression means 4. The compression means 4 has in turn at least one filling hole 10 configured to allow the expansive foam to be injected into this compression means 4. When the compression means 4 are put into the casing in a state initial retracted, it should be placed in relation to the at least one orifice 9 formed in the wall 5 of the housing 1 and the at least one filling hole 10.
Le moyen de compression 4 est disposé entre une paroi de fond 51 du boîtier 1 et au moins une deuxième paroi 8 d'un échangeur thermique 3. Plus particulièrement, un unique moyen de compression 4, comportant un ou plusieurs sacs étanches et déformables comme cela sera décrit ci-après, est disposé contre la paroi de fond et chacun des échangeurs thermiques. Dans un agencement pratique dans lequel la paroi de fond 51 du boîtier est une paroi horizontale au-dessus de laquelle s'étend la batterie, on a, tel qu'illustré sur les figures, la batterie 2, les échangeurs thermiques 3, le moyen de compression 4 et la paroi de fond 51 du boîtier 1 sont empilés selon une direction verticale. The compression means 4 is disposed between a bottom wall 51 of the housing 1 and at least a second wall 8 of a heat exchanger 3. More particularly, a single compression means 4, comprising one or more sealed and deformable bags like this. will be described below, is disposed against the bottom wall and each of the heat exchangers. In a practical arrangement in which the bottom wall 51 of the housing is a horizontal wall above which the battery extends, the battery 2, the heat exchangers 3, the means 4 and the bottom wall 51 of the housing 1 are stacked in a vertical direction.
Tel que cela est visible, les échangeurs thermiques 3 sont quant à eux disposés en série, selon une direction perpendiculaire à la direction d'empilement des composants listés ci-dessus. As can be seen, the heat exchangers 3 are themselves arranged in series, in a direction perpendicular to the stacking direction of the components listed above.
Chaque échangeur thermique 3 présente des conduits 1 1 pour la circulation d'un fluide réfrigérant délimités par la première paroi 6, la deuxième paroi 8 et par des parois intermédiaires reliant la première paroi 6 à la deuxième paroi 8. Le fluide réfrigérant qui circule dans ces conduits est apte à capter des calories émises par la batterie 2. Lorsque les échangeurs thermiques 3 sont plaqués contre la face 7 de la batterie 2 à refroidir, le fluide réfrigérant circulant dans ces conduits 1 1 capte les calories émises par cette batterie 2, permettant ainsi le refroidissement de cette dernière. Each heat exchanger 3 has ducts 1 1 for the circulation of a refrigerant defined by the first wall 6, the second wall 8 and by intermediate walls connecting the first wall 6 to the second wall 8. The refrigerant circulating in the these ducts is able to capture the calories emitted by the battery 2. When the heat exchangers 3 are pressed against the face 7 of the battery 2 to be cooled, the refrigerant circulating in these ducts 1 1 captures the calories emitted by the battery 2, thus allowing the cooling of the latter.
On comprend que le moyen de compression 4 est inséré dans le boîtier de support 1 dans l'état dit « initial ». Ce moyen de compression 4 est disposé dans le boîtier contre la paroi de fond 51 avant que ne soit introduit dans le boîtier dans un premier temps les échangeurs thermiques 3, directement sur le moyen de compression 4, et puis dans un deuxième temps la batterie 2 au-dessus des échangeurs thermiques. It is understood that the compression means 4 is inserted into the support housing 1 in the so-called "initial" state. This compression means 4 is disposed in the housing against the bottom wall 51 before the heat exchangers 3 are first introduced into the housing, directly on the means compression 4, and then in a second time the battery 2 above the heat exchangers.
Il pourrait être envisagé d'introduire le moyen de compression 4 dans le boîtier 1 alors que la batterie et les échangeurs thermiques sont déjà en place, via l'orifice 9 ménagé dans la paroi 5 du boîtier 1 , en l'espèce dans la paroi de fond 51 de ce boîtier 1 . It could be envisaged to introduce the compression means 4 into the casing 1 while the battery and the heat exchangers are already in place, via the orifice 9 formed in the wall 5 of the casing 1, in this case in the wall bottom 51 of this housing 1.
On pourra prévoir, sans qu'ils ne soient ici représentés, des moyens de mise en position des échangeurs thermiques 3 afin de s'assurer de leur position régulière les uns par rapport aux autres le long de la paroi de la batterie contre laquelle ils vont porter. Ces moyens de mise en position pourraient consister en des butées formées en saillie des parois du boîtier de batterie. It is possible to provide, without being shown here, means for setting the heat exchangers 3 in position in order to ensure their regular position relative to each other along the wall of the battery against which they are going. carry. These positioning means could consist of stops formed projecting from the walls of the battery case.
Une fois le moyen de compression 4, les échangeurs thermiques 3 et la batterie 2 disposés dans le boîtier 1 , et une fois qu'un couvercle 14 est rapporté sur le boîtier pour maintenir dans le logement ainsi défini l'ensemble des composants, le moyen de compression 4 est rempli avec la mousse expansive, via l'orifice 9 et le trou de remplissage 10 afin de prendre son état déployé. Once the compression means 4, the heat exchangers 3 and the battery 2 disposed in the housing 1, and once a cover 14 is attached to the housing to maintain the housing thus defined all the components, the means 4 is filled with the expansive foam, via the orifice 9 and the filling hole 10 to take its expanded state.
Cet état déployé est notamment illustré sur les figures 3 à 5, chacune de ces figures illustrant un mode de réalisation particulier de l'invention. Quel que soit le mode de réalisation de la présente invention, le moyen de compression 4, dans son état déployé, est configuré pour occuper tout un espace disponible entre la paroi 5 du boîtier 1 et les échangeurs thermiques 3. This deployed state is illustrated in particular in FIGS. 3 to 5, each of these figures illustrating a particular embodiment of the invention. Whatever the embodiment of the present invention, the compression means 4, in its deployed state, is configured to occupy an entire available space between the wall 5 of the housing 1 and the heat exchangers 3.
Ce faisant, le moyen de compression 4 plaque les échangeurs thermiques 3 contre la face 7 de la batterie 2 à refroidir. Plus précisément, le moyen de compression 4 exerce une force de compression F sur les deuxièmes parois 8 des échangeurs thermiques 3, cette force de compression F étant dirigée vers les échangeurs thermiques 3, ce qui permet de plaquer les premières parois 6 de ces échangeurs thermiques 3 contre la face 7 de la batterie 2 à refroidir, la batterie étant par ailleurs maintenue en place dans le logement à l'intérieur du boîtier de support par la présence du couvercle 14. La mousse expansive 13 est injectée sous forme de pate ou sous forme liquide. Dans un premier temps, la mousse expansive 13 remplit le sac déformable qui s'étend alors pour prendre un premier volume défini et pour remplir l'espace disponible entre les échangeurs thermiques 3 et la paroi 5 duIn doing so, the compression means 4 plates the heat exchangers 3 against the face 7 of the battery 2 to be cooled. More precisely, the compression means 4 exert a compression force F on the second walls 8 of the heat exchangers 3, this compression force F being directed towards the heat exchangers 3, which makes it possible to press the first walls 6 of these heat exchangers. 3 against the face 7 of the battery 2 to be cooled, the battery being also held in place in the housing inside the support case by the presence of the cover 14. The expansive foam 13 is injected in the form of paste or in liquid form. In a first step, the expansive foam 13 fills the deformable bag which then extends to take a first defined volume and to fill the available space between the heat exchangers 3 and the wall 5 of the
5 boîtier 1 . Dans un deuxième temps, en séchant, la mousse expansive 13 gonfle et le sac déformable s'étend pour prendre un deuxième volume correspondant à l'état déployé du moyen de compression 4, plaquant les échangeurs thermiques 3 contre la face 7 de la batterie 2, cette batterie étant retenu comme précédemment décrit par la présence du couvercle 14. Le fait de plaquer leso échangeurs thermiques contre la batterie permet d'assurer un bon contact et une bonne surface d'échange thermique pour le refroidissement de la batterie, en compensant les défauts éventuels de planéité des échangeurs thermiques et de la batterie, et en s'affranchissant par ailleurs des jeux de positionnement de chacun de ces composants à l'intérieur du boîtier de support. La mousse5 expansive 13 contenue dans le moyen de compression 4 permet également une protection mécanique des échangeurs thermiques 3 et de la batterie 2, la mousse expansive 13 absorbant les éventuels chocs subis par le boîtier 1 au cours de son utilisation. 5 casing 1. In a second step, while drying, the expansive foam 13 swells and the deformable bag extends to take a second volume corresponding to the deployed state of the compression means 4, plating the heat exchangers 3 against the face 7 of the battery 2 , this battery being retained as previously described by the presence of the lid 14. The fact of pressing leso heat exchangers against the battery ensures a good contact and a good heat exchange surface for cooling the battery, by compensating the possible flatness of the heat exchangers and the battery, and also by eliminating positioning sets of each of these components inside the support housing. The expansive foam 13 contained in the compression means 4 also allows mechanical protection of the heat exchangers 3 and the battery 2, the expansive foam 13 absorbing any shocks to the casing 1 during its use.
Avantageusement, la mousse expansive 13 remplissant le moyen deo compression 4 peut être thermiquement isolante, ce qui permet d'améliorer le rendement des échangeurs thermiques 3 disposés au contact de la batterie 2. Advantageously, the expansive foam 13 filling the deo compression means 4 may be thermally insulating, which makes it possible to improve the efficiency of the heat exchangers 3 arranged in contact with the battery 2.
Dans une variante de réalisation illustrée sur la figure 2, le couvercle 14 venant fermer le boîtier après insertion des échangeurs et de la batterie peut former une paroi inférieure du boîtier et le moyen de compression 4 est ainsi5 disposé entre le couvercle 14 de fermeture du boîtier 1 et les deuxièmes parois 8 des échangeurs thermiques 3. Dans un tel agencement, l'orifice 9 ménagé dans le boîtier 1 , pour permettre l'injection de mousse expansive dans le sac participant à former le moyen de compression 4, est ménagé dans le couvercle 14. o Cette variante de réalisation présente notamment l'avantage de faciliter les opérations de montage mais également de maintenance du boîtier 1 . Les opérations de montage peuvent notamment être facilitées en ce que le sac formant le moyen de compression 4 et le cas échéant les échangeurs thermiques peuvent être pré-positionnés sur le couvercle avant que celui-ci ne soit ramené contre le boîtier, ce qui permet d'assurer la bonne position du moyen deIn an alternative embodiment illustrated in FIG. 2, the cover 14 closing the housing after insertion of the exchangers and the battery can form a bottom wall of the housing and the compression means 4 is thus disposed between the cover 14 for closing the housing. 1 and the second walls 8 of the heat exchangers 3. In such an arrangement, the orifice 9 formed in the casing 1, to allow the injection of expansive foam into the bag participating in forming the compression means 4, is provided in the 14. This variant of embodiment has the advantage of facilitating the assembly operations but also maintenance of the housing 1. The In particular, assembly operations can be facilitated in that the bag forming the compression means 4 and, if appropriate, the heat exchangers can be pre-positioned on the lid before it is brought against the casing, which makes it possible to ensure the proper position of the means of
5 compression en regard des échangeurs thermiques. Par ailleurs, des opérations de maintenance sont simplifiées en ce qu'il suffit d'ôter le couvercle 14 pour avoir directement accès au moyen de compression 4 et donc aux échangeurs thermiques 3. Ainsi, pour remplacer ces échangeurs thermiques 3, il suffit d'ôter le couvercle 14 et le moyen de compression 4. Une fois les échangeurso thermiques 3 changés, un nouveau moyen de compression 4 peut être mis en place dans son état initial avant d'être rempli avec de la mousse expansive une fois le couvercle 14 en place, sans qu'il soit nécessaire pour cela de retirer la batterie du boîtier. 5 compression opposite the heat exchangers. Moreover, maintenance operations are simplified in that it suffices to remove the cover 14 to have direct access to the compression means 4 and therefore to the heat exchangers 3. Thus, to replace these heat exchangers 3, it is sufficient to remove the cover 14 and the compression means 4. Once the heat exchangers 3 have been changed, a new compression means 4 can be put in place in its initial state before being filled with expansive foam once the cover 14 has been removed. instead of removing the battery from the case.
Dans le premier mode de réalisation et sa variante, notamment illustrés sur5 les figures 1 à 3, le moyen de compression 4 consiste en un unique sac 41 étanche et déformable disposé entre la paroi de fond 51 du boîtier 1 et les deuxièmes parois 8 des échangeurs thermiques 3. L'injection de mousse expansive est faite dans un même sac et cette mousse se répand dans ce sac de sorte qu'il prenne dans la position déployée appui contre chacun deso échangeurs thermiques. Selon ce premier mode de réalisation, le moyen de compression 4 présente un unique trou de remplissage 10 et le boîtier 1 présente un unique orifice 9 par exemple ménagé dans la paroi de fond 51 . In the first embodiment and its variant, particularly illustrated in Figures 1 to 3, the compression means 4 consists of a single sealed and deformable bag 41 disposed between the bottom wall 51 of the housing 1 and the second walls 8 of the exchangers thermal 3. The expansive foam injection is made in the same bag and this foam spreads in this bag so that it takes in the deployed position support against each deso heat exchangers. According to this first embodiment, the compression means 4 has a single filling hole 10 and the housing 1 has a single orifice 9 for example made in the bottom wall 51.
On comprend que cet orifice 9 pourrait être ménagé dans l'une des parois latérales 52 du boîtier 1 , notamment dans le cas où l'agencement des5 composants dans le boîtier 1 est tel que les échangeurs thermiques sont disposés latéralement entre une paroi latérale et la batterie et que le moyen de compression est disposé entre ces échangeurs thermiques et ladite paroi latérale, dès lors que le trou de remplissage 10 ménagé dans le moyen de compression 4 est disposé latéralement en regard de l'orifice 9. o Ce premier mode de réalisation présente notamment l'avantage de pouvoir plaquer simultanément plusieurs échangeurs thermiques 3, en l'espèce trois échangeurs thermiques dans le cas illustré, contre la batterie 2 à refroidir en un seule et unique étape de remplissage et de déformation d'un unique sac 41 . It will be understood that this orifice 9 could be formed in one of the side walls 52 of the casing 1, particularly in the case where the arrangement of the components in the casing 1 is such that the heat exchangers are arranged laterally between a side wall and the casing 1. battery and that the compression means is disposed between these heat exchangers and said side wall, since the filling hole 10 formed in the compression means 4 is disposed laterally opposite the orifice 9. o This first embodiment has the advantage of being able to simultaneously coat several heat exchangers 3, in this case three heat exchangers in the illustrated case, against the battery 2 to cool in a single step of filling and deformation of a single bag 41.
Selon un deuxième mode de réalisation de la présente invention illustré sur la figure 4, le moyen de compression 4 consiste en un unique sac 42 étanche comprenant une pluralité de poches 43, étanches les unes par rapport aux autres, de sorte que la mousse injectée dans l'une des poches ne s'étend pas dans la poche voisine. Le sac 42 formant le moyen de compression est agencé entre les échangeurs thermiques et une paroi du boîtier, ici la paroi de fond 51 , de sorte que chacune des poches 43 soit disposée en regard d'un échangeur thermique 3. Chacune de ces poches 43 présente alors un trou de remplissage 10 qui lui est propre. According to a second embodiment of the present invention illustrated in FIG. 4, the compression means 4 consists of a single sealed bag 42 comprising a plurality of pockets 43, sealed with respect to each other, so that the foam injected into one of the pockets does not extend into the next pocket. The bag 42 forming the compression means is arranged between the heat exchangers and a wall of the housing, here the bottom wall 51, so that each of the pockets 43 is arranged facing a heat exchanger 3. Each of these pockets 43 then has a filling hole 10 of its own.
On comprend que le boîtier 1 présente en conséquence une pluralité d'orifices 9 ménagés dans une paroi, et notamment la paroi contre laquelle s'étend le sac déformable et étanche, à savoir ici la paroi de fond 51 de ce boîtier 1 . Les trous de remplissage 10 sont disposés en regard des orifices 9, tel que cela est visible sur la figure 4. De nouveau, on comprend que ces orifices 9 peuvent également être ménagés dans les parois latérales 52 du boîtier 1 , dès lors que les trous de remplissage 10 correspondants sont disposés en regard de ces orifices 9. Ce deuxième mode de réalisation de la présente invention présente notamment l'avantage de pouvoir appliquer des forces de compression F différentes pour chaque échangeur thermique 3 puisque, tel que mentionné précédemment, chacune des poches 43 du sac 42 est remplie indépendamment des autres, via un trou de remplissage 10 qui lui est propre. On peut s'adapter ainsi à des jeux de fabrication ou de positionnement différents d'un échangeur thermique à l'autre. It will be understood that the housing 1 accordingly has a plurality of orifices 9 formed in a wall, and in particular the wall against which the deformable and leakproof bag extends, namely here the bottom wall 51 of this housing 1. The filling holes 10 are arranged facing the orifices 9, as can be seen in FIG. 4. Again, it is understood that these orifices 9 can also be formed in the lateral walls 52 of the casing 1, since the holes The second embodiment of the present invention has the advantage of being able to apply different compression forces F for each heat exchanger 3 since, as mentioned above, each of the pockets 43 of the bag 42 is filled independently of the others, via a filling hole 10 of its own. We can adapt to different sets of manufacturing or positioning of a heat exchanger to another.
Selon un troisième mode de réalisation illustré sur la figure 5, le moyen de compression 4 consiste en une pluralité de sacs 44. Tel qu'illustré, chacun de ces sacs 44 est disposé en regard d'un échangeur thermique 3 et présente un trou de remplissage 10 qui lui est propre. Le boîtier 1 selon ce troisième mode de réalisation présente alors une pluralité d'orifices 9 par exemple ménagés dans la paroi de fond 51 , chacun des sacs 44 étant alors disposé de sorte que chaque trou de remplissage 10 soit en regard de l'un des orifices 9. According to a third embodiment illustrated in FIG. 5, the compression means 4 consists of a plurality of bags 44. As illustrated, each of these bags 44 is arranged facing a heat exchanger 3 and has a hole of filling 10 of its own. The housing 1 according to this third embodiment then has a plurality of orifices 9, for example formed in the bottom wall 51, each of the bags 44 then being arranged so that each filling hole 10 is opposite one of the orifices 9.
5 Ce troisième mode de réalisation présente là encore l'avantage de pouvoir appliquer des forces de compression F différentes pour chaque échangeur thermique 3, conformément à ce qui a pu être décrit dans le deuxième mode de réalisation, mais il convient de noter qu'il présente en outre l'avantage d'être modulaire et de permettre des opérations de maintenance sur les échangeurs îo thermiques plus faciles. Si un échangeur thermique 3 doit être changé indépendamment des autres, il est possible de le retirer et de le remplacer en ne retirant en outre qu'un seul des sac formant moyen de compression. This third embodiment again has the advantage of being able to apply different compression forces F for each heat exchanger 3, in accordance with what may have been described in the second embodiment, but it should be noted that Moreover, it has the advantage of being modular and of making maintenance operations on the heat exchangers easier. If a heat exchanger 3 is to be changed independently of the others, it can be removed and replaced by removing only one of the compression means bag.
Les figures 4 et 5 illustrent ainsi deux modes de réalisation différents de ce qui a été présenté sur les figures 1 et 3. Il est entendu que chacun de ces modes i5 de réalisation peut être indifféremment agencé selon le premier ou le deuxième agencement, tel qu'illustré sur la figure 2 dans lequel le moyen de compression est agencé contre un couvercle rapporté sur le boîtier, ou encore selon un autre agencement non représenté ici, par exemple dans lequel le moyen de compression serait disposé contre une paroi latérale du boîtier, sans sortir duo contexte de l'invention. FIGS. 4 and 5 thus illustrate two different embodiments of what has been presented in FIGS. 1 and 3. It is understood that each of these embodiments can be indifferently arranged according to the first or the second arrangement, such that 2 in which the compression means is arranged against a cover attached to the housing, or alternatively according to another arrangement not shown here, for example in which the compression means would be arranged against a side wall of the housing, without go out duo context of the invention.
La présente invention propose donc un boîtier de support de batterie comprenant, outre la batterie, au moins un échangeur thermique configuré pour être plaqué contre une face de la batterie par un moyen de compression, ce moyen de compression comprenant au moins un sac étanche et déformable5 configuré pour exercer une force de compression sur l'au moins un échangeur thermique lorsqu'il est dans un état déployé, c'est-à-dire lorsqu'il est rempli par de la mousse expansive. The present invention therefore proposes a battery support box comprising, in addition to the battery, at least one heat exchanger configured to be pressed against one side of the battery by a compression means, this compression means comprising at least one sealed and deformable bag. configured to exert a compressive force on the at least one heat exchanger when in an expanded state, i.e. when filled with expansive foam.
L'invention ne saurait toutefois se limiter aux moyens et configurations décrits et illustrés ici, et elle s'étend également à tous moyens ou configurations0 équivalents et à toute combinaison techniquement opérante de tels moyens. En particulier, la forme et la disposition du moyen de compression peuvent être modifiées sans nuire à l'invention, dans la mesure où elles remplissent les fonctionnalités décrites dans le présent document. The invention, however, can not be limited to the means and configurations described and illustrated herein, and it also extends to any equivalent means or configurations and to any technically operating combination of such means. In In particular, the shape and arrangement of the compression means can be modified without harming the invention, inasmuch as they fulfill the functionalities described herein.
Les modes de réalisation qui sont décrits ci-dessus ne sont nullement limitatifs : on pourra notamment imaginer des variantes de l'invention ne comprenant qu'une sélection de caractéristiques décrites par la suite isolées des autres caractéristiques mentionnées dans ce document, si cette sélection de caractéristiques est suffisante pour conférer un avantage technique ou pour différencier l'invention par rapport à l'état de la technique antérieur. The embodiments which are described above are in no way limiting: it will be possible to imagine variants of the invention comprising only a selection of characteristics described subsequently isolated from other features mentioned in this document, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.

Claims

REVENDICATIONS
1 . Boîtier de support (1 ) de batterie (2) pour véhicule automobile comprenant au moins une batterie (2), au moins un échangeur thermique (3) agencé au contact d'une face (7) de cette au moins une batterie (2), ainsi qu'un moyen de compression (4) disposé entre l'au moins un échangeur thermique (3) et une paroi (5) du boîtier (1 ) et configuré pour prendre au moins une position de compression pour plaquer cet au moins un échangeur thermique (3) contre l'au moins une batterie (2), caractérisé en ce que le moyen de compression (4) comprend au moins un sac étanche (41 , 42, 43, 44) et déformable, configuré pour prendre un état déployé, lorsqu'il est rempli avec une mousse expansive (13), dans lequel il prend ladite position de compression. 1. Carrier housing (1) for a battery (2) for a motor vehicle comprising at least one battery (2), at least one heat exchanger (3) arranged in contact with a face (7) of this at least one battery (2) , and a compression means (4) disposed between the at least one heat exchanger (3) and a wall (5) of the housing (1) and configured to take at least one compression position to press this at least one heat exchanger (3) against the at least one battery (2), characterized in that the compression means (4) comprises at least one sealed bag (41, 42, 43, 44) and deformable, configured to take a state deployed, when filled with an expansive foam (13), in which it takes said compression position.
2. Boîtier de support (1 ) selon la revendication précédente, dans lequel le moyen de compression (4) est configuré pour être intégré dans le boîtier de support (1 ) dans un état initial rétracté et pour prendre la position de compression, dans laquelle il participe à plaquer l'au moins un échangeur thermique (3) contre l'au moins une batterie, lorsqu'il est dans son état déployé. 2. Support housing (1) according to the preceding claim, wherein the compression means (4) is configured to be integrated in the support housing (1) in an initial retracted state and to take the compression position, wherein it participates in pressing the at least one heat exchanger (3) against the at least one battery when it is in its deployed state.
3. Boîtier de support (1 ) selon l'une quelconque des revendications précédentes, dans lequel une paroi (5) du boîtier (1 ) présente au moins un orifice (9) et dans lequel le moyen de compression (4) présente au moins un trou de remplissage (10), cet orifice (9) et ce trou de remplissage (10) étant agencés en regard l'un de l'autre et configurés pour permettre le remplissage du moyen de compression (4) par la mousse expansive (13). Support casing (1) according to any one of the preceding claims, wherein a wall (5) of the casing (1) has at least one orifice (9) and wherein the compression means (4) has at least one a filling hole (10), this orifice (9) and this filling hole (10) being arranged facing one another and configured to allow the filling of the compression means (4) by the expansive foam ( 13).
4. Boîtier de support (1 ) selon l'une quelconque des revendications 1 ou 2, dans lequel le boîtier (1 ) présente une pluralité d'orifices (9) ménagés dans une ou plusieurs parois (5) du boîtier (1 ) et dans lequel le moyen de compression (4) présente une pluralité de trous de remplissage (10), chaque orifice (9) étant agencé en regard d'un trou de remplissage (10). Boîtier de support (1 ) selon la revendication précédente, dans lequel le moyen de compression (4) consiste en une pluralité de sacs (44) étanches et déformables, chaque sac étanche et déformable comportant un trou de remplissage (10) agencé en regard d'un des orifices (9). 4. Support housing (1) according to any one of claims 1 or 2, wherein the housing (1) has a plurality of orifices (9) formed in one or more walls (5) of the housing (1) and wherein the pressing means (4) has a plurality of filling holes (10), each opening (9) being arranged opposite a filling hole (10). Support casing (1) according to the preceding claim, wherein the compression means (4) consists of a plurality of bags (44) sealed and deformable, each sealed and deformable bag having a filling hole (10) arranged next to one of the orifices (9).
Boîtier de support (1 ) selon la revendication 4, dans lequel le moyen de compression (4) consiste en un unique sac (42) étanche et déformable et dans lequel cet unique sac (42) présente une pluralité de poches (43) indépendantes les unes des autres, chaque poche (43) comportant un trou de remplissage (10) agencé en regard d'un des orifices (9). Support casing (1) according to claim 4, wherein the compression means (4) consists of a single bag (42) sealed and deformable and wherein this single bag (42) has a plurality of pockets (43) independent the each other, each pocket (43) having a filling hole (10) arranged opposite one of the orifices (9).
Boîtier de support (1 ) selon l'une quelconque des revendications précédentes, dans lequel la mousse expansive (13) remplissant le moyen de compression (4) dans son état déployé est une mousse polyuréthane expansive. Support casing (1) according to any one of the preceding claims, wherein the expansive foam (13) filling the compression means (4) in its expanded state is an expansive polyurethane foam.
Boîtier de support (1 ) selon l'une quelconque des revendications précédentes, dans lequel la paroi (5) du boîtier (1 ) contre laquelle est disposé le moyen de compression (4) est un couvercle (14) de fermeture de ce boîtier (1 ). Support casing (1) according to any one of the preceding claims, wherein the wall (5) of the casing (1) against which the compression means (4) is arranged is a cover (14) for closing the casing ( 1).
Procédé d'assemblage d'un boîtier de support (1 ) d'au moins une batterie (2) selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comprend au moins une étape de mise en place du moyen de compression (4) contre une paroi (5) du boîtier (1 ), une étape de mise en place de l'au moins un échangeur thermique (3) contre le moyen de compression (4), une étape de mise en place de la batterie (2) contre l'au moins un échangeur thermique (3), une étape de fermeture du boîtier par un couvercle (14) agencé pour venir au contact de la batterie (2), une étape d'injection de la mousse expansive (13) dans le moyen de compression (4) et une étape de séchage après laquelle la mousse expansive (13) occupe tout un espace disponible entre l'au moins un échangeur thermique (3) et la paroi (5) du boîtier (1 ). A method of assembling a support housing (1) of at least one battery (2) according to any one of claims 1 to 7, characterized in that it comprises at least one step of setting up the means compression device (4) against a wall (5) of the housing (1), a step of placing the at least one heat exchanger (3) against the compression means (4), a step of setting up the the battery (2) against the at least one heat exchanger (3), a step of closing the housing by a cover (14) arranged to come into contact with the battery (2), an expansive foam injection step (13) in the compression means (4) and a drying step after which the expansive foam (13) occupies an entire available space between the at least one heat exchanger (3) and the wall (5) of the housing (1). ).
10. Procédé d'assemblage d'un boîtier de support (1 ) d'au moins une batterie (2) selon la revendication 8, caractérisé en ce qu'il comprend au moins une étape de mise en place de l'au moins une batterie (2) dans le boîtier (1 ), une étape de mise en place de l'au moins un échangeur thermique (3) et du moyen de compression (4), dans son état rétracté, contre cette batterie (2) ou contre un couvercle (14) agencé pour venir fermer le boîtier (1 ), une étape de fermeture du boîtier par le couvercle (14), une étape d'injection de la mousse expansive (13) dans le moyen de compression (4) et une étape de séchage après laquelle la mousse expansive (13) occupe tout un espace disponible entre l'au moins un échangeur thermique (3) et la paroi (5) du boîtier (1 ). 10. A method of assembling a support housing (1) of at least one battery (2) according to claim 8, characterized in that it comprises at least one step of setting up the at least one battery (2) in the housing (1), a step of placing the at least one heat exchanger (3) and the compression means (4), in its retracted state, against this battery (2) or against a cover (14) arranged to close the housing (1), a step of closing the housing by the cover (14), a step of injecting the expansive foam (13) in the compression means (4) and a drying step after which the expansive foam (13) occupies an entire available space between the at least one heat exchanger (3) and the wall (5) of the housing (1).
PCT/FR2018/051151 2017-05-10 2018-05-07 Battery support housing for a hybrid or electric motor vehicle WO2018206896A1 (en)

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FR1754086A FR3066327B1 (en) 2017-05-10 2017-05-10 BATTERY SUPPORT HOUSING FOR A HYBRID OR ELECTRIC MOTOR VEHICLE

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CN111326690A (en) * 2018-12-17 2020-06-23 奥迪股份公司 Battery housing, battery module system, motor vehicle and method for introducing a heat-conducting element
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