WO2021152229A1 - Compartment for an apparatus capable of discharging heat - Google Patents

Compartment for an apparatus capable of discharging heat Download PDF

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Publication number
WO2021152229A1
WO2021152229A1 PCT/FR2021/050062 FR2021050062W WO2021152229A1 WO 2021152229 A1 WO2021152229 A1 WO 2021152229A1 FR 2021050062 W FR2021050062 W FR 2021050062W WO 2021152229 A1 WO2021152229 A1 WO 2021152229A1
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WO
WIPO (PCT)
Prior art keywords
compartment
walls
wall
interface
connecting element
Prior art date
Application number
PCT/FR2021/050062
Other languages
French (fr)
Inventor
Richard COTTET
Sergio Da Costa Pito
Mohamed Ibrahimi
Thibaut PERRIN
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 WO2021152229A1 publication Critical patent/WO2021152229A1/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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/035—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • 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
    • 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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0029—Heat sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • 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 present invention relates to a compartment for equipment capable of giving off heat during its operation, in particular for an electrical energy storage device for a motor vehicle.
  • Patent applications US2017176108 and WO 2013056938 describe heat exchangers for cooling battery cells. Furthermore, patent application US 2011/0206967 A describes an example of such a battery.
  • the cells are stored in containers having housings for receiving the cells.
  • One wall of the containers, intended to be in contact with a wall of a neighboring container, has recesses forming part of a duct for the circulation of a heat transfer fluid.
  • the cooling plates are assembled with the battery box by screws for example.
  • the present invention aims in particular to simplify the manufacture of a compartment for receiving battery cells, in particular concerning the assembly of the cooling elements with the rest of the compartment.
  • the present invention thus relates to a compartment for equipment capable of releasing heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one circulation channel.
  • a cooling fluid the channel being formed between a thermal interface wall and a bottom wall of the compartment, this interface wall and this bottom wall being mechanically assembled together by a mechanical connecting element which is at least partially made of plastic and being in contact with the two walls.
  • [6] Thanks to the invention, it is possible to reduce the overall height of the compartment, in particular due to an optimized number of parts required and the direct assembly of the interface and bottom walls together.
  • the height is the direction perpendicular to the main planes of the bottom and interface walls.
  • the invention makes it possible to reduce the mechanical stresses. at the level of the contacts between the interface wall and the bottom wall, due to the mechanical connecting elements.
  • the mechanical connecting element results from an overmolding on the two interface and bottom walls.
  • the two walls each comprise at least one orifice, these respective orifices facing each other, and the mechanical connecting element extends through these holes aligned.
  • the connecting element comprises enlargements resting on the two walls, and between these enlargements, a rod passing through the two holes in the walls.
  • the compartment has a plurality of mechanical connecting elements, each passing through a pair of wall holes.
  • these connecting elements are regularly arranged on the interface and bottom walls.
  • each mechanical connecting element has a post which projects from an outer side of the back wall.
  • the interface and bottom walls have a rim and an overmolded strip is provided which runs along this rim to keep the walls tight along this rim.
  • this strip has a shape, in cross section, in the shape of a U so as to grip the two walls along their rim.
  • the interface wall is made of metal, in particular aluminum.
  • the interface wall comprises a hollow column which extends through an orifice in the bottom wall, and this hollow column serves to receive a fixing member of the type. screw or tie rod, to secure the compartment to a part of the vehicle.
  • the invention also relates to an electrical energy storage device comprising a plurality of battery cells in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this compartment in thermal interaction. with the thermal interface wall.
  • the invention makes it possible to have a total height of the compartment which is relatively low, which is advantageous given the size constraints.
  • the compartment can also be made in a simplified manner.
  • the invention also relates to an electrical energy storage device comprising a plurality of battery cells, in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this interacting compartment. thermal with the cooling plate.
  • FIG.1 is a schematic view of an electrical energy storage device according to an exemplary embodiment of the invention.
  • FIG.2 shows a section of the compartment of [Fig.1]
  • FIG.3 is a schematic view of the arrangement of the mechanical connection elements of the compartment of the figure [Fig.2]
  • FIG.4 is a schematic view of the arrangement of the channels of the compartment of the figure [Fig.2]
  • FIG. 1 There is shown in Figure 1 an electrical energy storage module 1 comprising a plurality of battery cells 9 and a compartment 2.
  • this compartment 2 comprises channels 3 for circulating a cooling fluid which have parallel sections 4 with half-turns 6.
  • Other forms of channels are of course possible. .
  • This compartment 2 defines, with an upper cover 9, a housing 5 which contains the battery cells 9.
  • This compartment 2 comprises a frame 93 which defines a perimeter 95 of the compartment 2.
  • This frame 93 has external bars 94 forming the perimeter 95.
  • the bars 94 are in particular in a honeycomb structure. These bars are made of steel or aluminum, for example.
  • the cover 9 is arranged to rest against the frame 93 to close the compartment, with the interposition of one or more seals, not shown.
  • the channels 3 are formed between a thermal interface wall 20 and a bottom wall 21 of compartment 2.
  • This interface wall 20 and this bottom wall 21 are mechanically assembled together by mechanical connecting elements 22 which are made of plastic and in contact with the two walls 20 and 21.
  • the invention makes it possible to reduce the mechanical stresses at the level of the contacts between the interface wall and the bottom wall, due to the mechanical connecting elements.
  • the mechanical connecting elements 22 result from an overmolding on the two interface walls 20 and bottom 21.
  • the two walls 20 and 21 each have respective orifices 24 and 25, these respective orifices facing each other, in pairs, and each mechanical connecting element 22 extends through these orifices. aligned 24 and 25, as best seen in Figure 2.
  • Each connecting element 22 comprises enlargements 26 and 27 bearing respectively on the two walls 20 and 21, and between these enlargements 26 and 27, a rod 28 passing through the two orifices24 and 25 of the walls.
  • the connecting elements 22 are regularly arranged on the interface and bottom walls.
  • Each mechanical connecting element 22 has a post 29 which projects from an outer side of the bottom wall 21.
  • the interface 20 and bottom 21 walls have a rim 30 and an overmolded strip 31 is provided which runs along this rim 30 to hold the walls 20 and 21 tight along this rim 30.
  • This strip 31 has a shape, in cross section, in the shape of a U so as to grip the two walls 20 and 21 along their rim 30.
  • the interface wall 20 is made of metal, in particular aluminum.
  • the interface wall 20 comprises hollow columns 33 which extend through an orifice 34 of the bottom wall 21, and each hollow column 33 serves to receive a fixing member of the screw or tie type, to fix compartment 2 has one part of the vehicle.
  • the cooling fluid used in this case can in particular be a liquid refrigerant based on carbon dioxide, such as R744 for example, 2, 3, 3, 3-tetrafluoropropene (or HFO-1234yf) or 1, 1, 1, 2- tetrafluoroethane (or R-134a).
  • the coolant can also be a nanofluid.
  • the coolant can also be water, possibly including additives.
  • the battery cells 9 include, for example, a plurality of lithium-ion (Li-ion) batteries for use in a hybrid vehicle.
  • the plurality of battery cells are Li-ion batteries for use in a battery electric vehicle.
  • the channels 3 and the interface plate 20 form a heat exchanger included in a cooling circuit, not shown, of the type comprising a compressor and other heat exchangers. !

Abstract

The invention relates to a compartment (2) for an apparatus (9) capable of discharging heat during operation, in particular for an electrical energy storage device for a motor vehicle, said compartment comprising at least one circulation channel (3) for a coolant, the channel being formed between a thermal interface wall and a bottom wall of the compartment, said interface wall (20) and said bottom wall (21) being mechanically joined together by a mechanical connecting element (22) which is at least partially made of plastic and is in contact with the two walls.

Description

DESCRIPTION DESCRIPTION
TITRE DE L'INVENTION : COMPARTIMENT POUR UN EQUIPEMENT SUSCEPTIBLE DE DEGAGER DE LATITLE OF THE INVENTION: COMPARTMENT FOR EQUIPMENT LIKELY TO RELEASE
CHALEUR HEAT
[1] La présente invention concerne un compartiment pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif de stockage d'énergie électrique pour véhicule automobile. [1] The present invention relates to a compartment for equipment capable of giving off heat during its operation, in particular for an electrical energy storage device for a motor vehicle.
[2] Les demandes de brevet US2017176108 et WO 2013056938 décrivent des échangeurs de chaleur pour refroidir des cellules de batterie. Par ailleurs la demande de brevet US 2011/0206967 A décrit un exemple de telle batterie. Dans cette demande, les cellules sont stockées dans des containers ayant des logements de réception des cellules. Une paroi des containers, destinées à être en contact avec une paroi d’un container voisin présente des renfoncements formant une partie de conduit de circulation d’un fluide caloporteur. [2] Patent applications US2017176108 and WO 2013056938 describe heat exchangers for cooling battery cells. Furthermore, patent application US 2011/0206967 A describes an example of such a battery. In this application, the cells are stored in containers having housings for receiving the cells. One wall of the containers, intended to be in contact with a wall of a neighboring container, has recesses forming part of a duct for the circulation of a heat transfer fluid.
[3] D’une manière générale, de nos jours, les plaques de refroidissement sont assemblées avec le boîtier à batterie par des vis par exemple. [3] Generally, nowadays, the cooling plates are assembled with the battery box by screws for example.
[4] La présente invention vise notamment à simplifier la fabrication d’un compartiment pour recevoir des cellules de batterie, notamment concernant l’assemblage des éléments de refroidissement avec le reste du compartiment. [4] The present invention aims in particular to simplify the manufacture of a compartment for receiving battery cells, in particular concerning the assembly of the cooling elements with the rest of the compartment.
[5] La présente invention a ainsi pour objet un compartiment pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif de stockage d'énergie électrique pour véhicule automobile, ce compartiment comportant au moins un canal de circulation d’un fluide de refroidissement, le canal étant formé entre une paroi d’interface thermique et une paroi de fond du compartiment, cette paroi d’interface et cette paroi de fond étant assemblées mécaniquement entre elles par un élément de liaison mécanique qui est au moins partiellement en matière plastique et étant en contact avec les deux parois. [5] The present invention thus relates to a compartment for equipment capable of releasing heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one circulation channel. a cooling fluid, the channel being formed between a thermal interface wall and a bottom wall of the compartment, this interface wall and this bottom wall being mechanically assembled together by a mechanical connecting element which is at least partially made of plastic and being in contact with the two walls.
[6] Grâce à l’invention, il est possible de réduire l’encombrement en hauteur du compartiment, notamment du fait d’un nombre optimisé de pièces nécessaires et de l’assemblage direct des parois d’interface et de fond ensemble. La hauteur est la direction perpendiculaire aux plans principaux des parois de fond et d’interface. [6] Thanks to the invention, it is possible to reduce the overall height of the compartment, in particular due to an optimized number of parts required and the direct assembly of the interface and bottom walls together. The height is the direction perpendicular to the main planes of the bottom and interface walls.
[7] De même le poids global peut être réduit. [7] Likewise the overall weight can be reduced.
[8] Notamment dans le cas où la paroi d’interface est en aluminium et la paroi de fond en matériau composite à base de polymère avec une charge, par exemple une charge de fibres de verre, l’invention permet de réduire les sollicitations mécaniques au niveau des contacts entre la paroi d’interface et la paroi de fond, du fait des éléments de liaison mécaniques. [8] In particular in the case where the interface wall is made of aluminum and the bottom wall of a composite material based on polymer with a filler, for example a filler of glass fibers, the invention makes it possible to reduce the mechanical stresses. at the level of the contacts between the interface wall and the bottom wall, due to the mechanical connecting elements.
[9] L’invention permet ainsi d’augmenter la robustesse de l’ensemble. [9] The invention thus makes it possible to increase the robustness of the assembly.
[10] Selon l’un des aspects de l’invention, l’élément de liaison mécanique est issu d’un surmoulage sur les deux parois d’interface et de fond. [10] According to one aspect of the invention, the mechanical connecting element results from an overmolding on the two interface and bottom walls.
[11] Selon l’un des aspects de l’invention, les deux parois comportent chacune au moins un orifice, ces orifices respectifs étant en regard l’un de l’autre, et l’élément de liaison mécanique s’étend à travers ces orifices alignés. [11] According to one of the aspects of the invention, the two walls each comprise at least one orifice, these respective orifices facing each other, and the mechanical connecting element extends through these holes aligned.
[12] Selon l’un des aspects de l’invention, l’élément de liaison comporte des élargissements en appui sur les deux parois, et entre ces élargissements, une tige passant dans les deux orifices des parois. [12] According to one aspect of the invention, the connecting element comprises enlargements resting on the two walls, and between these enlargements, a rod passing through the two holes in the walls.
[13] Selon l’un des aspects de l’invention, ces élargissements maintiennent serrées les parois l’une contre l’autre. [13] According to one aspect of the invention, these enlargements keep the walls tight against each other.
[14] Selon l’un des aspects de l’invention, le compartiment comporte une pluralité d’éléments de liaison mécanique, passant chacun à travers une paire d’orifices des parois. [14] According to one aspect of the invention, the compartment has a plurality of mechanical connecting elements, each passing through a pair of wall holes.
[15] Selon l’un des aspects de l’invention, ces éléments de liaison sont régulièrement disposés sur les parois d’interface et de fond. [15] According to one aspect of the invention, these connecting elements are regularly arranged on the interface and bottom walls.
[16] Selon l’un des aspects de l’invention, chaque élément de liaison mécanique comporte une colonnette qui fait saillie d’un côté externe de la paroi de fond. [16] According to one aspect of the invention, each mechanical connecting element has a post which projects from an outer side of the back wall.
[17] Selon l’un des aspects de l’invention, les parois d’interface et de fond comporte un rebord et il est prévu une bande surmoulée qui longe ce rebord pour maintenir serrées les parois le long de ce rebord. [18] Selon l’un des aspects de l’invention, cette bande présente une forme, en section transversale, en forme de U pour venir enserrer les deux parois le long de leur rebord. [17] According to one of the aspects of the invention, the interface and bottom walls have a rim and an overmolded strip is provided which runs along this rim to keep the walls tight along this rim. [18] According to one of the aspects of the invention, this strip has a shape, in cross section, in the shape of a U so as to grip the two walls along their rim.
[19] Selon l’un des aspects de l’invention, la paroi d’interface est en métal, notamment en aluminium. [19] According to one aspect of the invention, the interface wall is made of metal, in particular aluminum.
[20] Selon l’un des aspects de l’invention, la paroi d’interface comporte une colonne creuse qui s’étend à travers un orifice de la paroi de fond, et cette colonne creuse sert à recevoir un organe de fixation du type vis ou tirant, pour fixer le compartiment à une pièce du véhicule. [20] According to one of the aspects of the invention, the interface wall comprises a hollow column which extends through an orifice in the bottom wall, and this hollow column serves to receive a fixing member of the type. screw or tie rod, to secure the compartment to a part of the vehicle.
[21] L’invention concerne encore un dispositif de stockage d’énergie électrique comportant une pluralité de cellules de batterie notamment disposées suivant une rangée, et un compartiment selon l’une des revendications précédentes, les cellules étant placées dans ce compartiment en interaction thermique avec la paroi d’interface thermique. [21] The invention also relates to an electrical energy storage device comprising a plurality of battery cells in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this compartment in thermal interaction. with the thermal interface wall.
[22] L’invention permet d’avoir une hauteur totale du compartiment qui est relativement faible, ce qui est avantageux compte tenu des contraintes d’encombrement. Le compartiment peut également être fabriqué de manière simplifiée. [22] The invention makes it possible to have a total height of the compartment which is relatively low, which is advantageous given the size constraints. The compartment can also be made in a simplified manner.
[23] L’invention concerne encore un dispositif de stockage d’énergie électrique comportant une pluralité de cellules de batterie, notamment disposées suivant une rangée, et un compartiment selon l’une des revendications précédentes, les cellules étant placées dans ce compartiment en interaction thermique avec la plaque de refroidissement. [23] The invention also relates to an electrical energy storage device comprising a plurality of battery cells, in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this interacting compartment. thermal with the cooling plate.
[24] D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement à la lecture de la description détaillée donnée ci-après, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels : [24] Other characteristics, details and advantages of the invention will emerge more clearly on reading the detailed description given below, and several embodiments given by way of indication and not by way of limitation with reference to the appended schematic drawings d. on the other hand, on which:
[25] [Fig.1 ] est une vue schématique d’un dispositif de stockage d’énergie électrique selon un exemple de réalisation de l’invention, [25] [Fig.1] is a schematic view of an electrical energy storage device according to an exemplary embodiment of the invention,
[26] [Fig.2] représente une coupe du compartiment de la [Fig.1 ], [27] [Fig.3] est une vue schématique de la disposition des éléments de liaison mécanique du compartiment de la figure [Fig.2], [26] [Fig.2] shows a section of the compartment of [Fig.1], [27] [Fig.3] is a schematic view of the arrangement of the mechanical connection elements of the compartment of the figure [Fig.2],
[28] [Fig.4] est une vue schématique de la disposition des canaux du compartiment de la figure [Fig.2] [28] [Fig.4] is a schematic view of the arrangement of the channels of the compartment of the figure [Fig.2]
[29] On a représenté sur la figure 1 un module 1 de stockage d’énergie électrique comportant une pluralité de cellules de batterie 9 et un compartiment 2. [29] There is shown in Figure 1 an electrical energy storage module 1 comprising a plurality of battery cells 9 and a compartment 2.
[30] Comme visible sur les figures 2 et 4, ce compartiment 2 comporte des canaux 3 de circulation d’un fluide de refroidissement qui présentent des tronçons parallèles 4 avec des demi-tours 6. D’autres formes de canaux sont bien entendu envisageables. [30] As visible in Figures 2 and 4, this compartment 2 comprises channels 3 for circulating a cooling fluid which have parallel sections 4 with half-turns 6. Other forms of channels are of course possible. .
[31] Ce compartiment 2 définit, avec un couvercle supérieur 9, un boîtier 5 qui contient les cellules de batterie 9. [31] This compartment 2 defines, with an upper cover 9, a housing 5 which contains the battery cells 9.
[32] Ce compartiment 2 comporte un cadre 93qui définit un pourtour 95 du compartiment 2. [32] This compartment 2 comprises a frame 93 which defines a perimeter 95 of the compartment 2.
[33] Ce cadre 93 comporte des barreaux externes 94 formant le pourtour 95. [33] This frame 93 has external bars 94 forming the perimeter 95.
[34] Les barreaux 94 sont notamment en structure alvéolée. Ces barreaux ont par exemple en acier ou aluminium. [34] The bars 94 are in particular in a honeycomb structure. These bars are made of steel or aluminum, for example.
[35] Le couvercle 9 est agencé pour s’appliquer contre le cadre 93 pour fermer le compartiment, avec interposition d’un ou plusieurs joints d’étanchéité non représentés. [35] The cover 9 is arranged to rest against the frame 93 to close the compartment, with the interposition of one or more seals, not shown.
[36] Les canaux 3 sont formés entre une paroi d’interface thermique 20 et une paroi de fond 21 du compartiment 2. [36] The channels 3 are formed between a thermal interface wall 20 and a bottom wall 21 of compartment 2.
[37] Cette paroi d’interface 20 et cette paroi de fond 21 sont assemblées mécaniquement entre elles par des éléments de liaison mécanique 22 qui sont en matière plastique et en contact avec les deux parois 20 et 21. [37] This interface wall 20 and this bottom wall 21 are mechanically assembled together by mechanical connecting elements 22 which are made of plastic and in contact with the two walls 20 and 21.
[38] Notamment dans le cas où la paroi d’interface 20 est en aluminium et la paroi de fond 21 en matériau composite à base de polymère avec une charge, par exemple une charge de fibres de verre, l’invention permet de réduire les sollicitations mécaniques au niveau des contacts entre la paroi d’interface et la paroi de fond, du fait des éléments de liaison mécaniques. [39] Les éléments de liaison mécanique 22 sont issus d’un surmoulage sur les deux parois d’interface 20 et de fond 21. [38] In particular in the case where the interface wall 20 is made of aluminum and the bottom wall 21 of a composite material based on polymer with a filler, for example a filler of glass fibers, the invention makes it possible to reduce the mechanical stresses at the level of the contacts between the interface wall and the bottom wall, due to the mechanical connecting elements. [39] The mechanical connecting elements 22 result from an overmolding on the two interface walls 20 and bottom 21.
[40] Les deux parois 20 et 21 comportent chacune des orifices respectifs 24 et 25, ces orifices respectifs étant en regard, par paire, l’un de l’autre, et chaque élément de liaison mécanique 22 s’étend à travers ces orifices alignés 24 et 25, comme mieux visible sur la figure 2. [40] The two walls 20 and 21 each have respective orifices 24 and 25, these respective orifices facing each other, in pairs, and each mechanical connecting element 22 extends through these orifices. aligned 24 and 25, as best seen in Figure 2.
[41] Chaque élément de liaison 22 comporte des élargissements 26 et 27 en appui respectivement sur les deux parois 20 et 21 , et entre ces élargissements 26 et 27, une tige 28 passant dans les deux orifices24 et 25 des parois. [41] Each connecting element 22 comprises enlargements 26 and 27 bearing respectively on the two walls 20 and 21, and between these enlargements 26 and 27, a rod 28 passing through the two orifices24 and 25 of the walls.
[42] Ces élargissements 26 et 27, par exemple de forme en disques, maintiennent serrées les parois 20 et 21 l’une contre l’autre. [42] These enlargements 26 and 27, for example disc-shaped, hold the walls 20 and 21 tight against each other.
[43] Ces disques 26 et les orifices 24 et 25 sont régulièrement espacées pour former des lignes et des rangées parallèles, comme visible sur la figure 3. [43] These discs 26 and the orifices 24 and 25 are regularly spaced to form parallel lines and rows, as can be seen in FIG. 3.
[44] Autrement dit, les éléments de liaison 22 sont régulièrement disposés sur les parois d’interface et de fond. [44] In other words, the connecting elements 22 are regularly arranged on the interface and bottom walls.
[45] Chaque élément de liaison mécanique 22 comporte une colonnette 29 qui fait saillie d’un côté externe de la paroi de fond 21. [45] Each mechanical connecting element 22 has a post 29 which projects from an outer side of the bottom wall 21.
[46] Les parois d’interface 20 et de fond 21 comporte un rebord 30 et il est prévu une bande surmoulée 31 qui longe ce rebord 30 pour maintenir serrées les parois 20 et 21 le long de ce rebord 30. [46] The interface 20 and bottom 21 walls have a rim 30 and an overmolded strip 31 is provided which runs along this rim 30 to hold the walls 20 and 21 tight along this rim 30.
[47] Cette bande 31 présente une forme, en section transversale, en forme de U pour venir enserrer les deux parois 20 et 21 le long de leur rebord 30. [47] This strip 31 has a shape, in cross section, in the shape of a U so as to grip the two walls 20 and 21 along their rim 30.
[48] La paroi d’interface 20 est en métal, notamment en aluminium. [48] The interface wall 20 is made of metal, in particular aluminum.
[49] La paroi d’interface 20 comporte des colonnes creuses 33 qui s’étendent à travers un orifice 34 de la paroi de fond 21 , et chaque colonne creuse 33 sert à recevoir un organe de fixation du type vis ou tirant, pour fixer le compartiment 2 à une pièce du véhicule. [49] The interface wall 20 comprises hollow columns 33 which extend through an orifice 34 of the bottom wall 21, and each hollow column 33 serves to receive a fixing member of the screw or tie type, to fix compartment 2 has one part of the vehicle.
[50] Le fluide de refroidissement mis en oeuvre dans ce cas peut notamment être un réfrigérant liquide à base de dioxyde de carbone, comme du R744 par exemple, du 2, 3, 3, 3-tétrafluoropropène (ou HFO-1234yf) ou du 1 , 1 , 1 , 2- tétrafluoroéthane (ou R-134a). Le liquide de refroidissement peut également être un nanofluide. Le liquide de refroidissement peut encore être de l’eau, incluant éventuellement des additifs. [50] The cooling fluid used in this case can in particular be a liquid refrigerant based on carbon dioxide, such as R744 for example, 2, 3, 3, 3-tetrafluoropropene (or HFO-1234yf) or 1, 1, 1, 2- tetrafluoroethane (or R-134a). The coolant can also be a nanofluid. The coolant can also be water, possibly including additives.
[51 ] Les cellules de batterie 9 comprennent par exemple une pluralité de batteries au lithium-ion (Li-ion) pour une utilisation dans un véhicule hybride. Dans un autre mode de réalisation, la pluralité de cellules de batterie sont des batteries Li- ion pour une utilisation dans un véhicule électrique à batterie. [51] The battery cells 9 include, for example, a plurality of lithium-ion (Li-ion) batteries for use in a hybrid vehicle. In another embodiment, the plurality of battery cells are Li-ion batteries for use in a battery electric vehicle.
[52] Les canaux 3 et la plaque d’interface 20 forment un échangeur de chaleur compris dans un circuit de refroidissement, non représenté, du type comprenant un compresseur et d’autres échangeurs thermiques. ! [52] The channels 3 and the interface plate 20 form a heat exchanger included in a cooling circuit, not shown, of the type comprising a compressor and other heat exchangers. !

Claims

REVENDICATIONS
[Revendication 1] Compartiment (2) pour un équipement (9) susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif de stockage d'énergie électrique pour véhicule automobile, ce compartiment comportant au moins un canal de circulation (3) d’un fluide de refroidissement, le canal étant formé entre une paroi d’interface thermique et une paroi de fond du compartiment, cette paroi d’interface (20) et cette paroi de fond (21) étant assemblées mécaniquement entre elles par un élément de liaison mécanique (22) qui est au moins partiellement en matière plastique et étant en contact avec les deux parois. [Claim 1] Compartment (2) for equipment (9) capable of giving off heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one circulation channel (3 ) of a cooling fluid, the channel being formed between a thermal interface wall and a bottom wall of the compartment, this interface wall (20) and this bottom wall (21) being mechanically assembled together by a mechanical connecting element (22) which is at least partially made of plastic material and being in contact with the two walls.
[Revendication 2] Compartiment selon la revendication précédente, dans lequel cet élément de liaison mécanique (22) est issu d’un surmoulage sur les deux parois d’interface et de fond. [Claim 2] Compartment according to the preceding claim, in which this mechanical connecting element (22) results from an overmolding on the two interface and bottom walls.
[Revendication 3] Compartiment selon l’une des revendications précédentes, dans lequel les deux parois comportent chacune au moins un orifice, ces orifices respectifs (24, 25) étant en regard l’un de l’autre, et l’élément de liaison mécanique s’étend à travers ces orifices alignés. [Claim 3] Compartment according to one of the preceding claims, in which the two walls each comprise at least one orifice, these respective orifices (24, 25) being opposite one another, and the connecting element mechanical extends through these aligned holes.
[Revendication 4] Compartiment selon l’une des revendications précédentes, dans lequel l’élément de liaison comporte des élargissements (26, 27) en appui sur les deux parois, et entre ces élargissements, une tige passant dans les deux orifices des parois. [Claim 4] A compartment according to one of the preceding claims, in which the connecting element comprises enlargements (26, 27) bearing on the two walls, and between these enlargements, a rod passing through the two openings of the walls.
[Revendication 5] Compartiment selon l’une des revendications précédentes, dans lequel le compartiment comporte une pluralité d’éléments de liaison mécanique (22), passant chacun à travers une paire d’orifices des parois. [Claim 5] A compartment according to any one of the preceding claims, wherein the compartment has a plurality of mechanical link members (22), each passing through a pair of wall holes.
[Revendication 6] Compartiment selon la revendication précédente, dans lequel ces éléments de liaison (22) sont régulièrement disposés sur les parois d’interface et de fond. [Claim 6] A compartment according to the preceding claim, in which these connecting elements (22) are regularly arranged on the interface and bottom walls.
[Revendication 7] Compartiment selon l’une des revendications 5 ou 6, dans lequel chaque élément de liaison mécanique comporte une colonnette (29) qui fait saillie d’un côté externe de la paroi de fond. [Claim 7] A compartment according to one of claims 5 or 6, in which each mechanical connecting element comprises a post (29) which projects from an outer side of the bottom wall.
[Revendication 8] Compartiment selon l’une des revendications précédentes, dans lequel les parois d’interface et de fond comporte un rebord (30) et comprenant une bande surmoulée (31) qui longe ce rebord pour maintenir serrées les parois le long de ce rebord. [Claim 8] A compartment according to one of the preceding claims, in which the interface and bottom walls have a rim (30) and comprising an overmolded strip (31) which runs along this rim to keep the walls tight along this rim.
[Revendication 9] Dispositif de stockage d’énergie électrique comportant une pluralité de cellules de batterie (9) notamment disposées suivant une rangée, et un compartiment selon l’une des revendications précédentes, les cellules étant placées dans ce compartiment en interaction thermique avec la paroi d’interface thermique. [Claim 9] An electrical energy storage device comprising a plurality of battery cells (9) in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this compartment in thermal interaction with the thermal interface wall.
PCT/FR2021/050062 2020-01-27 2021-01-14 Compartment for an apparatus capable of discharging heat WO2021152229A1 (en)

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FR2000772A FR3106699A1 (en) 2020-01-27 2020-01-27 Compartment for equipment liable to give off heat
FRFR2000772 2020-01-27

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Citations (6)

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Publication number Priority date Publication date Assignee Title
US20110206967A1 (en) 2010-02-25 2011-08-25 Sanyo Electric Co., Ltd. Battery cooling/heating structure and battery module
FR2974453A1 (en) * 2011-04-19 2012-10-26 Valeo Systemes Thermiques DEVICE FOR THERMALLY MANAGING A BATTERY PACK
WO2013056938A1 (en) 2011-10-18 2013-04-25 Bayerische Motoren Werke Aktiengesellschaft Apparatus for voltage supply
US20160049705A1 (en) * 2013-03-29 2016-02-18 Valeo Systemes Thermiques Heat-exchange panel for battery heat management and associated production method
US20170176108A1 (en) 2014-06-27 2017-06-22 Dana Canada Corporation Multi-sided heat exchangers with compliant heat transfer surfaces
US20190109357A1 (en) * 2017-10-06 2019-04-11 Dana Canada Corporation Heat exchanger with integrated support structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110206967A1 (en) 2010-02-25 2011-08-25 Sanyo Electric Co., Ltd. Battery cooling/heating structure and battery module
FR2974453A1 (en) * 2011-04-19 2012-10-26 Valeo Systemes Thermiques DEVICE FOR THERMALLY MANAGING A BATTERY PACK
WO2013056938A1 (en) 2011-10-18 2013-04-25 Bayerische Motoren Werke Aktiengesellschaft Apparatus for voltage supply
US20160049705A1 (en) * 2013-03-29 2016-02-18 Valeo Systemes Thermiques Heat-exchange panel for battery heat management and associated production method
US20170176108A1 (en) 2014-06-27 2017-06-22 Dana Canada Corporation Multi-sided heat exchangers with compliant heat transfer surfaces
US20190109357A1 (en) * 2017-10-06 2019-04-11 Dana Canada Corporation Heat exchanger with integrated support structure

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