WO2020115404A1 - Housing for an electrical energy storage device for a motor vehicle - Google Patents

Housing for an electrical energy storage device for a motor vehicle Download PDF

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Publication number
WO2020115404A1
WO2020115404A1 PCT/FR2019/052838 FR2019052838W WO2020115404A1 WO 2020115404 A1 WO2020115404 A1 WO 2020115404A1 FR 2019052838 W FR2019052838 W FR 2019052838W WO 2020115404 A1 WO2020115404 A1 WO 2020115404A1
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WO
WIPO (PCT)
Prior art keywords
housing
channel
energy storage
bottom wall
electrical energy
Prior art date
Application number
PCT/FR2019/052838
Other languages
French (fr)
Inventor
Sergio Da Costa Pito
Original Assignee
Valeo Systemes Thermiques
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Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2020115404A1 publication Critical patent/WO2020115404A1/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
    • 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
    • H01M10/62—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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/276—Inorganic material
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/278—Organic material
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/28—Composite material consisting of a mixture of organic and inorganic materials
    • 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 an electrical energy storage device for a motor vehicle, comprising a housing and at least one electrical energy storage cell received in the housing.
  • the invention relates in particular to said housing.
  • the invention also relates to a housing for an electrical energy storage device for a motor vehicle.
  • Each module includes a plurality of electrical energy storage cells received in a housing. It is thus easier to combine electric batteries to obtain a desired charge capacity. It is also easier, in this way, to mount the battery on the motor vehicle, the storage cells being protected by the housing.
  • the invention therefore seeks to overcome this drawback and proposes an electrical energy storage device for a motor vehicle, comprising a housing with improved sealing thus avoiding any leakage of the
  • the invention provides a housing for an electrical energy storage device for a motor vehicle, said housing being configured to receive at least one electrical energy storage cell, this housing comprising: at. a bottom wall, preferably the bottom wall comprising a composite material,
  • the housing comprises a ductile material.
  • ductile material is meant a material which can be stretched without breaking or breaking.
  • a malleable, elastic, stretchable, flexible, flexible or even extensible material in other words having an ability to resist the propagation of a crack or break.
  • the material according to the invention preferably has an elongation at break (A%) greater than or equal to 50% or else having the energy necessary to cause a break greater than 26 Pa, in other words, an elastic limit in traction greater than 26 Pa.
  • the case includes a material giving it an ability to deform, without breaking, in the event of impact; that is, to absorb an acceptable amount of energy in the event of an impact.
  • [12] u corresponds to the ultimate length, that is to say the length of the element, here the element of the case comprising the ductile material, just before rupture.
  • Lo corresponds to the initial length, length of the element before the start of a tensile test.
  • the case comprises an element, which may be a wall, a rib or even a cover, having an elongation at break greater than or equal to 50%.
  • the ductile material that is to say which can withstand a large plastic deformation preferably has a tensile capacity greater than 50%.
  • This material is preferably an unreinforced polymer such as for example a modified polypropylene or any polyethylene polyamide comprising a certain percentage of elastomers.
  • the material will allow a slight deformation of the
  • the housing comprises a second material more resistant than the ductile material.
  • the housing comprises at least two ribs connected to the bottom wall, the channel being formed by the bottom wall, the two ribs and the cover; d. the ribs include a ductile material;
  • the bottom wall comprises a ductile material
  • the cover comprises a ductile material
  • a side wall is connected to the bottom wall, an element of
  • connection element being at least partially molded onto, or with, the bottom wall or the side wall; h. each channel communicates with an associated connection element, to respectively allow the supply or the evacuation of refrigerant fluid from the channel by the external circuit;
  • the bottom wall further comprises a second and third material each more resistant than the ductile material
  • this wall is substantially flat
  • this ductile wall is fixed to the rest of the channel by fusion of material, and in particular without glue.
  • the resistant material has a tensile elastic limit greater than 350 MPa.
  • the housing may further comprise a third material serving as material
  • Said assembly material has a modulus of elasticity between 4 GPa and 12 GPa and an elastic limit between 70 MPa and 150 MPa and therefore is more resistant than the ductile material also.
  • connection element allows a quick and tight connection of the channel of the housing with the external circuit.
  • This element is moreover easy to manufacture with the rest of the case, being fixed by an overmolding on a wall of the case.
  • connection element comprises a nozzle with at least one annular groove arranged to receive a complementary relief of a complementary connection element so that, when the two elements connection are assembled, they form a connection allowing the coolant to circulate between the channel and the external circuit.
  • end piece has a frustoconical side to facilitate cooperation with the complementary connection element.
  • the tip is made of aluminum, steel or plastic.
  • the tip has a groove in which there is overmolded material.
  • the end piece is arranged through an orifice formed in the side wall and / or the bottom wall.
  • connection elements are
  • the channel or each channel has a groove formed by the bottom wall and a cover arranged to close this groove and thus form the channel, the closure being effected in particular by welding of this cover on the bottom wall.
  • the cover has a slender shape.
  • the cover is substantially planar.
  • the cover has at least one elbow to match a channel elbow, in particular two elbows.
  • one end of the channel cover is opposite the connection element, known as Quick connect.
  • the groove communicates with at least one orifice, in particular a plurality of orifices, to make the coolant communicate with one or more heat exchangers.
  • this or these heat exchangers are in particular each a plate with internal channels for the circulation of cooling fluid.
  • each cover covers less than 10%, in particular 5%, of the area of the bottom wall
  • the invention also relates to an electrical energy storage device for a motor vehicle, comprising such a box and at least one storage of electrical energy, in particular a plurality of cells, received in said housing.
  • Figures 1 to 5 are views of an example of implementation of
  • FIGS. 6 and 7 schematically illustrate a section of the housing according to the invention.
  • the invention relates to a box 16 which is configured to receive electrical energy storage cells as illustrated in FIG. 1.
  • Said box comprises a bottom wall 26, the bottom wall 26 comprising a composite material, side walls 28 connecting to the bottom wall 26 so as to define a housing for receiving the electrical energy storage cells and at least one channel 50, here two in number, for circulation of a cooling fluid , each channel 50 being at least partially formed by the bottom wall 26.
  • the housing 16 further comprises fluid connection elements 100 arranged to allow the channels 50 to be connected with an external cooling fluid circuit not shown, each connection element 100 being at least partially overmolded with the bottom wall or the side wall.
  • This box 16 forms the lower part of the compartment 12 which, with a
  • cover receives battery cells.
  • each fluid connection element 100 of the quick connect type, or in English "Quick connect” comprises an end piece 101 with an annular groove 102 arranged to receive a complementary relief of a complementary connection element not shown so that, when the two connection elements are assembled, they form a connection allowing the coolant to flow between the channel 50 and the external circuit.
  • the tip 101 has a sidewall
  • the end piece 101 is made of aluminum for example.
  • the end piece has a groove 105 in which there is material overmolded from the wall 28.
  • the end piece is arranged through an orifice 105 formed in the side wall 28.
  • connection elements are arranged to be connected to each other by snap-fastening.
  • the housing 16 includes a fluid distribution channel 50 of
  • cooling, or coolant, and a coolant collection channel 50 each channel communicating with an associated connection element, as described above, to respectively allow the supply of the distribution channel by the external circuit and the evacuation of refrigerant by the external circuit.
  • each channel 50 has a groove 51 formed by the bottom wall 26 and a cover 55 arranged to close this groove 51 and thus form the channel 50, the closure being effected in particular by welding this hood on the back wall.
  • each channel 50 has a groove 51 formed by the bottom wall 26, the latter being inscribed in a plane, two ribs 57 projecting from the plane defined by the bottom wall 26 and a cover 55 arranged to close this groove 51 and thus form the channel 50, the closure being effected in particular by welding this cover on each free end of each rib 57.
  • each rib 57 comprises one end being in contact with the bottom wall 26 and a free end being arranged opposite.
  • the housing 16 comprises a ductile material as defined above having an elongation at break greater than or equal to 50%, that is to say able to withstand a large plastic deformation preferably has a traction capacity greater than 50%.
  • each rib 57 can be made of such a ductile material, with one end overmolded or injected on the bottom wall 26 and the other free end configured to receive the cover 55.
  • the cover 55 can come into abutment against each end free of the ribs 57 and be welded to the ends arranged opposite the bottom wall 26.
  • Each rib 57 may further comprise a shoulder 59 thus creating a housing for receiving the cover 55 as illustrated in FIG. 7.
  • the cover 55 can also be made of ductile material.
  • this wall should be made of a second material, namely a second resistant material having a tensile elastic limit greater than 350 MPa.
  • the bottom wall 26 can be made of a third so-called assembly material having in particular an elastic modulus between 4 GPa and 12 GPa and an elastic limit between 70 MPa and 150 MPa.
  • bottom wall 26 is more resistant than the ductile material.
  • the housing 16 comprises at least two materials, a first ductile material and a second material more resistant than the first material.
  • the housing 16 may further comprise a third material.
  • the cover 55 and the ribs 57 can be made of the first ductile material while the bottom wall 26 and the side walls 28 can be made of a second more resistant material or even comprise a third material also more resistant than the ductile material.
  • the whole of the housing 16 is manufactured by combining a ductile material, at the level of each channel 50, namely the covers 55 and the ribs 57, a resistant material (or of high stiffness) and possibly a material
  • Each cover 55 is of elongated shape and is substantially planar.
  • Each cover 55 comprises, to match a bend in the channel, in particular two bends 56.
  • the groove 51 communicates with a plurality of orifices 65, to make
  • These heat exchangers 60 are in particular each a plate 61 with internal channels for the circulation of cooling fluid.
  • Each cover 55 covers less than 10%, in particular 5%, of the area of the bottom wall 26.
  • the coolant 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 still be water, possibly including additives

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

Abstract

The invention relates to a housing (16) for an electrical energy storage device for a motor vehicle, said housing being configured to receive at least one electrical energy storage cell (14), and said housing having: a. a base wall (26), and b. at least one channel (50) for the circulation of a cooling fluid, said channel (50) being at least partly formed by the base wall (26) and said channel (50) comprising a groove (51) formed at least in part by the base wall (26), and a cover (55) arranged to close said groove (51) and thus form the channel (50). According to the invention, the housing (16) comprises a ductile material.

Description

BOITIER POUR DISPOSITIF DE STOCKAGE D'ENERGIE ELECTRIQUE POUR VEHICULE AUTOMOBILE HOUSING FOR ELECTRICAL ENERGY STORAGE DEVICE FOR MOTOR VEHICLE
[1 ] L'invention concerne un dispositif de stockage d'énergie électrique pour véhicule automobile, comprenant un boîtier et au moins une cellule de stockage d'énergie électrique reçue dans le boîtier. L’invention porte en particulier sur ledit boîtier. L’invention se rapporte également à un boîtier pour dispositif de stockage d'énergie électrique pour véhicule automobile [1] The invention relates to an electrical energy storage device for a motor vehicle, comprising a housing and at least one electrical energy storage cell received in the housing. The invention relates in particular to said housing. The invention also relates to a housing for an electrical energy storage device for a motor vehicle.
[2] Dans le domaine automobile, il est connu de mettre en oeuvre des batteries [2] In the automotive field, it is known to use batteries
électriques sous forme de modules. Chaque module comporte une pluralité de cellules de stockages d’énergie électrique reçues dans un boîtier. Il est ainsi plus aisé de combiner les batteries électriques pour obtenir une capacité de charge souhaitée. Il est également plus aisé, de la sorte, de monter la batterie sur le véhicule automobile, les cellules de stockage étant protégées par le boîtier. electrical in the form of modules. Each module includes a plurality of electrical energy storage cells received in a housing. It is thus easier to combine electric batteries to obtain a desired charge capacity. It is also easier, in this way, to mount the battery on the motor vehicle, the storage cells being protected by the housing.
[3] Le document US 201 1/0206967 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 de refroidissement. [3] Document US 201 1/0206967 describes an example of such a battery. In this request, the cells are stored in containers having receptacles for receiving the cells. A wall of the containers, intended to be in contact with a wall of a neighboring container, has recesses forming a part of the conduit for circulation of a cooling fluid.
[4] Bien qu’un tel container soit adapté pour contenir des cellules de stockages d’énergie électrique, la batterie est soumise à des contraintes mécaniques telles que des efforts de torsion ou de courbure, et à des conditions climatiques pouvant provoquer des cassures mécaniques et des risques de fuites du fluide de refroidissement de la batterie. [4] Although such a container is suitable for containing cells for storing electrical energy, the battery is subjected to mechanical stresses such as torsional or curvature forces, and to climatic conditions which can cause mechanical breaks. and the risk of battery coolant leaking.
[5] L’invention cherche donc à surmonter cet inconvénient et propose dispositif de stockage d'énergie électrique pour véhicule automobile, comprenant un boîtier avec une étanchéité améliorée évitant ainsi toute fuite du fluide de de [5] The invention therefore seeks to overcome this drawback and proposes an electrical energy storage device for a motor vehicle, comprising a housing with improved sealing thus avoiding any leakage of the
refroidissement de la batterie. battery cooling.
[6] Pour cela, l’invention propose un boîtier pour dispositif de stockage d'énergie électrique pour véhicule automobile, ledit boîtier étant configuré pour recevoir moins une cellule de stockage d'énergie électrique, ce boîtier comportant : a. une paroi de fond, de préférence la paroi de fond comportant un matériau composite, [6] For this, the invention provides a housing for an electrical energy storage device for a motor vehicle, said housing being configured to receive at least one electrical energy storage cell, this housing comprising: at. a bottom wall, preferably the bottom wall comprising a composite material,
b. au moins un canal pour une circulation d’un fluide de refroidissement, ledit canal étant au moins partiellement formé par la paroi de fond, c. ledit canal comporte un sillon formé au moins en partie par la paroi de fond et un capot agencé pour fermer ce sillon et former ainsi le canal. Selon l’invention, le boitier comporte un matériau ductile. b. at least one channel for circulation of a cooling fluid, said channel being at least partially formed by the bottom wall, c. said channel comprises a groove formed at least in part by the bottom wall and a cover arranged to close this groove and thus form the channel. According to the invention, the housing comprises a ductile material.
[7] Par matériau ductile il est entendu un matériau pouvant être étiré sans casser ou rompre. En d’autres termes un matériau malléable, élastique, étirable, flexible, souple ou encore extensible autrement dit ayant une aptitude à résister à la propagation d’une fissure ou cassure. Plus particulièrement, le matériau selon l’invention a de préférence un allongement à la rupture (A%) supérieur ou égal à 50% ou encore ayant une énergie nécessaire pour provoquer une cassure supérieure à 26 Pa, autrement dit, une limite élastique en traction supérieure à 26 Pa. [7] By ductile material is meant a material which can be stretched without breaking or breaking. In other words, a malleable, elastic, stretchable, flexible, flexible or even extensible material, in other words having an ability to resist the propagation of a crack or break. More particularly, the material according to the invention preferably has an elongation at break (A%) greater than or equal to 50% or else having the energy necessary to cause a break greater than 26 Pa, in other words, an elastic limit in traction greater than 26 Pa.
[8] Par la suite, il est entendu que si un élément comporte un matériau, cela signifie que cet élément est réalisé au moins partiellement dans ce matériau, autrement dit cet élément fabriqué à partir de ce matériau. [8] Subsequently, it is understood that if an element comprises a material, this means that this element is made at least partially in this material, in other words this element made from this material.
[9] On peut aussi dire que le boitier comporte un matériau lui donnant une capacité à se déformer, sans rompre, en cas de choc ; c’est-à-dire d’absorber une quantité d’énergie acceptable en cas de choc. Autrement dit, une forte capacité à se déformer plastiquement sans se rompre, la rupture se faisant lorsqu'un défaut telle une fissure ou cavité, induit par la déformation plastique, devient critique et se propage, le matériau présente donc une forte aptitude à résister à cette propagation. [9] We can also say that the case includes a material giving it an ability to deform, without breaking, in the event of impact; that is, to absorb an acceptable amount of energy in the event of an impact. In other words, a strong ability to deform plastically without breaking, the rupture occurring when a defect such as a crack or cavity, induced by plastic deformation, becomes critical and propagates, the material therefore has a strong ability to resist this spread.
[10] L’allongement à la rupture, représenté par le terme « A% » est définit par la formule suivante : [10] The elongation at break, represented by the term "A%" is defined by the following formula:
[1 1 ] [Math. 1 ]
Figure imgf000004_0001
[1 1] [Math. 1]
Figure imgf000004_0001
[12] ucorrespond à la longueur ultime, c'est-à-dire à la longueur de l’élément, ici l’élément du boitier comprenant le matériau ductile, juste avant la rupture. Lo correspond à la longueur initiale, longueur de l’élément avant le début d’un essai de traction. [12] u corresponds to the ultimate length, that is to say the length of the element, here the element of the case comprising the ductile material, just before rupture. Lo corresponds to the initial length, length of the element before the start of a tensile test.
[13] Comme dit précédemment, selon l’invention, le boitier comprend un élément, pouvant être une paroi, une nervure ou encore un capot, ayant un allongement à la rupture supérieur ou égal à 50%. Le matériau ductile, c'est-à-dire pouvant supporter une grande déformation plastique a préférentiellement une capacité en traction supérieur à 50%. Ce matériau est préférentiellement un polymère non renforcé comme par exemple un polypropylène modifié ou encore n’importe quel polyamide polyéthylène comportant un certain pourcentage d’élastomères. [13] As said previously, according to the invention, the case comprises an element, which may be a wall, a rib or even a cover, having an elongation at break greater than or equal to 50%. The ductile material, that is to say which can withstand a large plastic deformation preferably has a tensile capacity greater than 50%. This material is preferably an unreinforced polymer such as for example a modified polypropylene or any polyethylene polyamide comprising a certain percentage of elastomers.
[14] Ainsi, selon l’invention, le matériau permettra une légère déformation du [14] Thus, according to the invention, the material will allow a slight deformation of the
boitier tout en minimisant les contraintes mécaniques observées au niveau des raccords de tuyauterie et du capot empêchant ainsi toutes défaillances précoces et éventuelles fuites de fluide de refroidissement de la batterie. while minimizing the mechanical stresses observed at the level of the pipe fittings and the hood thus preventing any early failures and possible leaks of coolant from the battery.
[15] D’autres mode de réalisation pris seul ou en combinaison proposent que : [15] Other embodiments taken alone or in combination propose that:
a. une paroi latérale se raccorde à la paroi de fond, le canal étant au moins partiellement formé par la paroi de fond et/ou la paroi latérale. b. ,le boitier comporte un deuxième matériau plus résistant que le matériau ductile. at. a side wall is connected to the bottom wall, the channel being at least partially formed by the bottom wall and / or the side wall. b. , the housing comprises a second material more resistant than the ductile material.
c. le boitier comprend au moins deux nervures reliées à la paroi de fond, le canal étant formé par la paroi de fond, les deux nervures et le capot ; d. les nervures comportent un matériau ductile ; vs. the housing comprises at least two ribs connected to the bottom wall, the channel being formed by the bottom wall, the two ribs and the cover; d. the ribs include a ductile material;
e. la paroi de fond comporte un matériau ductile ; e. the bottom wall comprises a ductile material;
f. le capot comporte un matériau ductile ; f. the cover comprises a ductile material;
g. une paroi latérale se raccorde à la paroi de fond, un élément de g. a side wall is connected to the bottom wall, an element of
connexion fluidique étant agencé pour permettre de relier le canal avec un circuit externe de fluide de refroidissement, l’élément de connexion étant au moins partiellement surmoulé sur, ou avec, la paroi de fond ou la paroi latérale ; h. chaque canal communique avec un élément de connexion associé, pour respectivement permettre l’alimentation ou l’évacuation de fluide réfrigérant du canal par le circuit externe ; fluid connection being arranged to allow the channel to be connected with an external cooling fluid circuit, the connection element being at least partially molded onto, or with, the bottom wall or the side wall; h. each channel communicates with an associated connection element, to respectively allow the supply or the evacuation of refrigerant fluid from the channel by the external circuit;
i. la paroi de fond comporte en outre un deuxième et troisième matériau chacun plus résistants que le matériau ductile ; i. the bottom wall further comprises a second and third material each more resistant than the ductile material;
j. l'une au moins des parois qui forme le canal est réalisée dans le j. at least one of the walls which forms the channel is produced in the
matériau ductile ; ductile material;
k. cette paroi est sensiblement plane; k. this wall is substantially flat;
L. cette paroi ductile est fixée au reste du canal par fusion de matière, et notamment sans colle. L. this ductile wall is fixed to the rest of the channel by fusion of material, and in particular without glue.
[16] Le matériau résistant a une limite élastique en traction supérieure à 350 MPa. [16] The resistant material has a tensile elastic limit greater than 350 MPa.
Il peut se présenter, par exemple, sous la forme d’un matériau composite thermoplastique comportant des fibres de renforcement. Ces fibres peuvent, par exemple, être des fibres de carbone ou encore des fibres de verres. Le boîtier peut comporter en outre un troisième matériau servant de matériau It can be, for example, in the form of a thermoplastic composite material comprising reinforcing fibers. These fibers can, for example, be carbon fibers or even glass fibers. The housing may further comprise a third material serving as material
d’assemblage qui permet de renforcer ladite structure du boîtier et de créer des interfaces pour l’assemblage. Ce matériau dit d’assemblage est assembly which allows to reinforce said structure of the housing and to create interfaces for assembly. This so-called assembly material is
préférentiellement un matériau plastique injectable. Ledit matériau d’assemblage a un module d’élasticité compris entre 4 GPa et 12 GPa et une limite élastique comprise entre 70 MPa et 150 MPa et donc est plus résistant que le matériau ductile également. preferably an injectable plastic material. Said assembly material has a modulus of elasticity between 4 GPa and 12 GPa and an elastic limit between 70 MPa and 150 MPa and therefore is more resistant than the ductile material also.
[17] L’élément de connexion selon l’invention permet une connexion rapide et étanche du canal du boîtier avec le circuit externe. Cet élément est de plus facile à fabriquer avec le reste du boîtier, étant fixé par un surmoulage sur une paroi du boîtier. [17] The connection element according to the invention allows a quick and tight connection of the channel of the housing with the external circuit. This element is moreover easy to manufacture with the rest of the case, being fixed by an overmolding on a wall of the case.
[18] Selon l’un des aspects de l’invention, l’élément de connexion comporte un embout avec au moins une gorge annulaire agencée pour recevoir un relief complémentaire d’un élément de connexion complémentaire de sorte que, lorsque les deux éléments de connexion sont assemblés, ils forment une connexion permettant au fluide de refroidissement de circuler entre le canal et le circuit externe. [19] Selon l’un des aspects de l’invention, l’embout comporte un flanc tronconique pour faciliter la coopération avec l’élément de connexion complémentaire. [18] According to one aspect of the invention, the connection element comprises a nozzle with at least one annular groove arranged to receive a complementary relief of a complementary connection element so that, when the two elements connection are assembled, they form a connection allowing the coolant to circulate between the channel and the external circuit. [19] According to one aspect of the invention, the end piece has a frustoconical side to facilitate cooperation with the complementary connection element.
[20] Selon l’un des aspects de l’invention, l’embout est réalisé en aluminium, acier ou en matériau plastique. [20] According to one aspect of the invention, the tip is made of aluminum, steel or plastic.
[21 ] Selon l’un des aspects de l’invention, l’embout comporte une rainure dans laquelle se trouve de la matière surmoulée. [21] According to one aspect of the invention, the tip has a groove in which there is overmolded material.
[22] Selon l’un des aspects de l’invention, l’embout est agencé à travers un orifice formé dans la paroi latérale et/ou la paroi de fond. [22] According to one aspect of the invention, the end piece is arranged through an orifice formed in the side wall and / or the bottom wall.
[23] Selon l’un des aspects de l’invention, les éléments de connexion sont [23] According to one aspect of the invention, the connection elements are
agencés pour être connectés l’un à l’autre par encliquetage arranged to be connected to each other by snap-fastening
[24] Selon l’un des aspects de l’invention, le canal ou chaque canal comporte un sillon formé par la paroi de fond et un capot agencé pour fermer ce sillon et former ainsi le canal, la fermeture se faisant notamment par soudure de ce capot sur la paroi de fond. [24] According to one aspect of the invention, the channel or each channel has a groove formed by the bottom wall and a cover arranged to close this groove and thus form the channel, the closure being effected in particular by welding of this cover on the bottom wall.
[25] Selon l’un des aspects de l’invention, le capot est de forme longiligne. [25] According to one aspect of the invention, the cover has a slender shape.
[26] Selon l’un des aspects de l’invention, le capot est sensiblement plan. [26] According to one aspect of the invention, the cover is substantially planar.
[27] Selon l’un des aspects de l’invention, le capot comporte au moins un coude, pour épouser un coude du canal, notamment deux coudes. [27] According to one aspect of the invention, the cover has at least one elbow to match a channel elbow, in particular two elbows.
[28] Selon l’un des aspects de l’invention, l’une des extrémités du capot du canal est en regard de l’élément de connexion, dit Quick connect. [28] According to one aspect of the invention, one end of the channel cover is opposite the connection element, known as Quick connect.
[29] Selon l’un des aspects de l’invention, le sillon communique avec au moins un orifice, notamment une pluralité d’orifices, pour faire communiquer le fluide de refroidissement avec un ou plusieurs échangeurs thermiques. [29] According to one aspect of the invention, the groove communicates with at least one orifice, in particular a plurality of orifices, to make the coolant communicate with one or more heat exchangers.
[30] Selon l’un des aspects de l’invention, ce ou ces échangeurs thermiques sont notamment chacun une plaque avec des canaux intérieurs pour la circulation de fluide de refroidissement. [30] According to one aspect of the invention, this or these heat exchangers are in particular each a plate with internal channels for the circulation of cooling fluid.
[31 ] Selon l’un des aspects de l’invention, chaque capot couvre moins de 10%, notamment 5%, de la superficie de la paroi de fond [31] According to one aspect of the invention, each cover covers less than 10%, in particular 5%, of the area of the bottom wall
[32] L’invention concerne également un dispositif de stockage d'énergie électrique pour véhicule automobile, comprenant un tel boitier et au moins une cellule de stockage d'énergie électrique, notamment une pluralité de cellules, reçue dans ledit boitier. [32] The invention also relates to an electrical energy storage device for a motor vehicle, comprising such a box and at least one storage of electrical energy, in particular a plurality of cells, received in said housing.
[33] Puis les raccords hydrauliques sont fixés de manière étanche à ce boitier ou boitier pour mettre en circulation le fluide de refroidissement dans les canaux du boitier, fluide qui provient d’un circuit externe à ce boitier [33] Then the hydraulic connections are tightly fixed to this box or box to circulate the cooling fluid in the channels of the box, fluid which comes from a circuit external to this box.
[34] D’autres caractéristiques et avantages de l’invention apparaîtront à la lecture de la description qui va suivre. Celle-ci est purement illustrative et doit être lue en regard des dessins annexés. [34] Other characteristics and advantages of the invention will appear on reading the description which follows. This is purely illustrative and should be read in conjunction with the accompanying drawings.
[35] Les figures 1 à 5 sont des vues d’un exemple de mise en oeuvre de [35] Figures 1 to 5 are views of an example of implementation of
l’invention. the invention.
[36] Les figures 6 et 7 illustrent de manière schématique une section du boitier selon l’invention. [36] Figures 6 and 7 schematically illustrate a section of the housing according to the invention.
[37] L’invention porte sur un boitier 16 qui est configuré pour recevoir des cellules de stockage d'énergie électrique comme illustré sur la figure 1. Ledit boitier comporte une paroi de fond 26, la paroi de fond 26 comportant un matériau composite, des parois latérales 28 se raccordant à la paroi de fond 26 de manière à définir un logement pour recevoir les cellules de stockage d’énergie électrique et au moins un canal 50, ici au nombre de deux, pour une circulation d’un fluide de refroidissement, chaque canal 50 étant au moins partiellement formé par la paroi de fond 26. [37] The invention relates to a box 16 which is configured to receive electrical energy storage cells as illustrated in FIG. 1. Said box comprises a bottom wall 26, the bottom wall 26 comprising a composite material, side walls 28 connecting to the bottom wall 26 so as to define a housing for receiving the electrical energy storage cells and at least one channel 50, here two in number, for circulation of a cooling fluid , each channel 50 being at least partially formed by the bottom wall 26.
[38] Le boitier 16 comprend en outre des éléments de connexion fluidique 100 agencés pour permettre de relier les canaux 50 avec un circuit externe de fluide de refroidissement non représenté, chaque élément de connexion 100 étant au moins partiellement surmoulé avec la paroi de fond ou la paroi latérale. [38] The housing 16 further comprises fluid connection elements 100 arranged to allow the channels 50 to be connected with an external cooling fluid circuit not shown, each connection element 100 being at least partially overmolded with the bottom wall or the side wall.
[39] Ce boitier 16 forme la partie inférieure du compartiment 12 qui, avec un [39] This box 16 forms the lower part of the compartment 12 which, with a
couvercle, reçoit des cellules de batterie. cover, receives battery cells.
[40] Ce boitier 16 et le couvercle 18 sont par exemple réalisés chacun à partir d’une feuille en matériau composite, notamment comprenant des fibres de verre, éventuellement en variante des fibres de carbone ou d’une autre nature, pré imprégnées d’une résine thermoplastique. [41 ] Comme visible sur les figures 4 et 5, chaque élément de connexion fluidique 100 du type à connexion rapide, ou en anglais « Quick connect », et comporte un embout 101 avec une gorge annulaire 102 agencée pour recevoir un relief complémentaire d’un élément de connexion complémentaire non représenté de sorte que, lorsque les deux éléments de connexion sont assemblés, ils forment une connexion permettant au fluide de refroidissement de circuler entre le canal 50 et le circuit externe. [40] This box 16 and the cover 18 are for example each made from a sheet of composite material, in particular comprising glass fibers, possibly alternatively carbon fibers or of another nature, pre-impregnated with a thermoplastic resin. [41] As can be seen in FIGS. 4 and 5, each fluid connection element 100 of the quick connect type, or in English "Quick connect", and comprises an end piece 101 with an annular groove 102 arranged to receive a complementary relief of a complementary connection element not shown so that, when the two connection elements are assembled, they form a connection allowing the coolant to flow between the channel 50 and the external circuit.
[42] Comme visible sur les figures 4 et 5, l’embout 101 comporte un flanc [42] As shown in Figures 4 and 5, the tip 101 has a sidewall
tronconique 104 pour faciliter la coopération avec l’élément de connexion complémentaire. frustoconical 104 to facilitate cooperation with the complementary connection element.
[43] L’embout 101 est réalisé en aluminium par exemple. [43] The end piece 101 is made of aluminum for example.
[44] L’embout comporte une rainure 105 dans laquelle se trouve de la matière surmoulée de la paroi 28. [44] The end piece has a groove 105 in which there is material overmolded from the wall 28.
[45] L’embout est agencé à travers un orifice 105 formé dans la paroi latérale 28. [45] The end piece is arranged through an orifice 105 formed in the side wall 28.
[46] Les éléments de connexion sont agencés pour être connectés l’un à l’autre par encliquetage. [46] The connection elements are arranged to be connected to each other by snap-fastening.
[47] Le boitier 16 comporte un canal 50 de distribution de fluide de [47] The housing 16 includes a fluid distribution channel 50 of
refroidissement, ou fluide réfrigérant, et un canal 50 de collecte de fluide de refroidissement, chaque canal communiquant avec un élément de connexion associé, tel que décrit ci-dessus, pour respectivement permettre l’alimentation du canal de distribution par le circuit externe et l’évacuation de fluide réfrigérant par le circuit externe. cooling, or coolant, and a coolant collection channel 50, each channel communicating with an associated connection element, as described above, to respectively allow the supply of the distribution channel by the external circuit and the evacuation of refrigerant by the external circuit.
[48] Comme illustré sur la figure 3, chaque canal 50 comporte un sillon 51 formé par la paroi de fond 26 et un capot 55 agencé pour fermer ce sillon 51 et former ainsi le canal 50, la fermeture se faisant notamment par soudure de ce capot sur la paroi de fond. [48] As illustrated in FIG. 3, each channel 50 has a groove 51 formed by the bottom wall 26 and a cover 55 arranged to close this groove 51 and thus form the channel 50, the closure being effected in particular by welding this hood on the back wall.
[49] Comme illustré sur la figure 6, chaque canal 50 comporte un sillon 51 formé par la paroi de fond 26, celle-ci s’inscrivant dans un plan, deux nervures 57 faisant saillie du plan défini par la paroi de fond 26 et un capot 55 agencé pour fermer ce sillon 51 et former ainsi le canal 50, la fermeture se faisant notamment par soudure de ce capot sur chaque extrémité libre de chaque nervure 57. En effet, chaque nervure 57 comprend une extrémité étant au contact de la paroi de fond 26 et une extrémité libre étant agencé à l’opposé. [49] As illustrated in FIG. 6, each channel 50 has a groove 51 formed by the bottom wall 26, the latter being inscribed in a plane, two ribs 57 projecting from the plane defined by the bottom wall 26 and a cover 55 arranged to close this groove 51 and thus form the channel 50, the closure being effected in particular by welding this cover on each free end of each rib 57. In Indeed, each rib 57 comprises one end being in contact with the bottom wall 26 and a free end being arranged opposite.
[50] Selon l’invention, le boîtier 16 comprend un matériau ductile tel que défini ci- dessus ayant un allongement à la rupture supérieur ou égal à 50%, c'est-à-dire pouvant supporter une grande déformation plastique a préférentiellement une capacité en traction supérieur à 50%. Par exemple chaque nervure 57 peut être réalisée d’un tel matériau ductile, avec une extrémité surmoulé ou injectée sur la paroi de fond 26 et l’autre extrémité libre configurée pour accueillir le capot 55. Le capot 55 peut venir en butée contre chaque extrémité libre des nervures 57 et être soudé sur les extrémités agencé à l’opposé de la paroi de fond 26. Chaque nervure 57 peut comprendre en outre un épaulement 59 créant ainsi un logement pour recevoir le capot 55 comme illustré en figure 7. Selon l’invention, le capot 55 peut être aussi réalisé en matériau ductile. [50] According to the invention, the housing 16 comprises a ductile material as defined above having an elongation at break greater than or equal to 50%, that is to say able to withstand a large plastic deformation preferably has a traction capacity greater than 50%. For example, each rib 57 can be made of such a ductile material, with one end overmolded or injected on the bottom wall 26 and the other free end configured to receive the cover 55. The cover 55 can come into abutment against each end free of the ribs 57 and be welded to the ends arranged opposite the bottom wall 26. Each rib 57 may further comprise a shoulder 59 thus creating a housing for receiving the cover 55 as illustrated in FIG. 7. According to the invention, the cover 55 can also be made of ductile material.
[51 ] La paroi de fond 26 étant donné qu’elle doit supporter les cellules de stockage [51] The bottom wall 26 since it must support the storage cells
d’énergie électrique, il convient que cette paroi soit réalisée en un deuxième matériau à savoir un deuxième matériau résistant ayant une limite élastique en traction supérieure à 350 MPa. La paroi de fond 26 peut être réalisé d’un troisième matériau dit d’assemblage ayant notamment un module d’élasticité compris entre 4 GPa et 12 GPa et une limite élastique comprise entre 70 MPa et 150 MPa. of electrical energy, this wall should be made of a second material, namely a second resistant material having a tensile elastic limit greater than 350 MPa. The bottom wall 26 can be made of a third so-called assembly material having in particular an elastic modulus between 4 GPa and 12 GPa and an elastic limit between 70 MPa and 150 MPa.
Ainsi la paroi de fond 26 est plus résistant que le matériau ductile. Thus the bottom wall 26 is more resistant than the ductile material.
[52] Ainsi pour résumer le boîtier 16 selon l’invention comprend au moins deux matériau, un premier matériau ductile et un deuxième matériau plus résistant que le premier matériau. Le boîtier 16 peut comprendre en outre un troisième matériau. Le capot 55 et les nervures 57 peuvent être réalisés dans le premier matériau ductile tandis que la paroi de fond 26 et les parois latérales 28 peuvent être réalisées dans un deuxième matériaux plus résistant voire comprendre un troisième matériau aussi plus résistant que le matériau ductile. [52] Thus to summarize the housing 16 according to the invention comprises at least two materials, a first ductile material and a second material more resistant than the first material. The housing 16 may further comprise a third material. The cover 55 and the ribs 57 can be made of the first ductile material while the bottom wall 26 and the side walls 28 can be made of a second more resistant material or even comprise a third material also more resistant than the ductile material.
[53] Ainsi la totalité, du boîtier 16 est fabriquée en combinant un matériau ductile, au niveau de chaque canal 50, à savoir les capots 55 et les nervures 57, un matériau résistant (ou de haute raideur) et éventuellement un matériau [53] Thus the whole of the housing 16 is manufactured by combining a ductile material, at the level of each channel 50, namely the covers 55 and the ribs 57, a resistant material (or of high stiffness) and possibly a material
d’assemblage pour la paroi de fond 26 et les parois latérales 28. Cette assembly for the bottom wall 26 and the side walls 28. This
combinaison particulière de matériaux permet de résister aux fortes charges ainsi qu’aux contraintes de températures tout en assurant une étanchéité optimale. De plus, elle permet de mieux protéger la batterie d’éventuels chocs dus à des jets de pierres et/ou de cailloux lors de l'utilisation du véhicule. special combination of materials makes it possible to withstand heavy loads as well as temperature constraints while ensuring optimum sealing. Of more, it better protects the battery from possible shocks due to throwing stones and / or pebbles when using the vehicle.
[54] Chaque capot 55 est de forme longiligne et est sensiblement plan. [54] Each cover 55 is of elongated shape and is substantially planar.
[55] Chaque capot 55 comporte, pour épouser un coude du canal, notamment deux coudes 56. [55] Each cover 55 comprises, to match a bend in the channel, in particular two bends 56.
[56] L’une des extrémités du capot du canal 50 est en regard de l’élément de [56] One end of the cover of channel 50 is opposite the element of
connexion 100. connection 100.
[57] Le sillon 51 communique avec une pluralité d’orifices 65, pour faire [57] The groove 51 communicates with a plurality of orifices 65, to make
communiquer le fluide de refroidissement avec un ou plusieurs échangeurs thermiques 60. communicating the cooling fluid with one or more heat exchangers 60.
[58] Ces échangeurs thermiques 60 sont notamment chacun une plaque 61 avec des canaux intérieurs pour la circulation de fluide de refroidissement. [58] These heat exchangers 60 are in particular each a plate 61 with internal channels for the circulation of cooling fluid.
[59] Chaque capot 55 couvre moins de 10%, notamment 5%, de la superficie de la paroi de fond 26. [59] Each cover 55 covers less than 10%, in particular 5%, of the area of the bottom wall 26.
[60] Le liquide 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 [60] The coolant 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 still be water, possibly including additives

Claims

Revendications Claims
[Revendication 1 ] Boîtier (16) pour dispositif de stockage d'énergie électrique pour véhicule automobile, ledit boîtier étant configuré pour recevoir moins une cellule (14) de stockage d'énergie électrique, ce boîtier comportant [Claim 1] Housing (16) for an electrical energy storage device for a motor vehicle, said housing being configured to receive at least one electric energy storage cell (14), this housing comprising
a. une paroi de fond (26), at. a bottom wall (26),
b. au moins un canal (50) pour une circulation d’un fluide de refroidissement, ledit canal (50) étant au moins partiellement formé par la paroi de fond (26), b. at least one channel (50) for circulation of a cooling fluid, said channel (50) being at least partially formed by the bottom wall (26),
c. ledit canal (50) comporte un sillon (51 ) formé au moins en partie par la paroi de fond (26) et un capot (55) agencé pour fermer ce sillon (51 ) et former ainsi le canal (50) caractérisé en ce que le boîtier (16) comporte un matériau ductile. vs. said channel (50) comprises a groove (51) formed at least in part by the bottom wall (26) and a cover (55) arranged to close this groove (51) and thus form the channel (50) characterized in that the housing (16) comprises a ductile material.
[Revendication 2] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 2] Housing (16) for an electrical energy storage device
selon la revendication 1 dans lequel le boîtier (16) comporte en outre un deuxième matériau plus résistant que le matériau ductile. according to claim 1 wherein the housing (16) further comprises a second material more resistant than the ductile material.
[Revendication 3] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 3] Housing (16) for an electrical energy storage device
selon l’une des revendications précédentes dans lequel, le boîtier (16) comprend au moins deux nervures (57) reliées à la paroi de fond (26), le canal (51 ) étant formé par la paroi de fond (26), lesdites nervures (57) et le capot (55). according to one of the preceding claims, in which the housing (16) comprises at least two ribs (57) connected to the bottom wall (26), the channel (51) being formed by the bottom wall (26), said channels ribs (57) and the cover (55).
[Revendication 4] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 4] Housing (16) for an electrical energy storage device
selon la revendication 3 dans lequel lesdites nervures (57) comportent le matériau ductile according to claim 3 wherein said ribs (57) comprise the ductile material
[Revendication 5] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 5] Housing (16) for an electrical energy storage device
selon l’une des revendications précédentes dans lequel la paroi de fond (26) comporte en outre un deuxième et troisième matériau chacun plus résistants que le matériau ductile. according to one of the preceding claims wherein the bottom wall (26) further comprises a second and third material each more resistant than the ductile material.
[Revendication 6] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 6] Housing (16) for an electrical energy storage device
selon l’une des revendications précédentes dans lequel le capot (55) comporte le matériau ductile. according to one of the preceding claims wherein the cover (55) comprises the ductile material.
[Revendication 7] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 7] Housing (16) for an electrical energy storage device
selon l’une des revendications précédentes dans lequel une paroi latérale (28) se raccorde à la paroi de fond (26), un élément de connexion fluidique (100) étant agencé pour permettre de relier le canal (50) avec un circuit externe de fluide de refroidissement, l’élément de connexion (100) étant au moins partiellement surmoulé sur la paroi de fond (26) ou la paroi latérale (28). according to one of the preceding claims in which a side wall (28) is connected to the bottom wall (26), a fluid connection element (100) being arranged to enable the channel (50) to be connected with an external circuit fluid of cooling, the connection element (100) being at least partially molded onto the bottom wall (26) or the side wall (28).
[Revendication 8] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 8] Housing (16) for an electrical energy storage device
selon la revendication 7 dans lequel chaque canal (50) communique avec un élément de connexion (100) associé, pour respectivement permettre according to claim 7 wherein each channel (50) communicates with an associated connection element (100), to respectively allow
l’alimentation ou l’évacuation de fluide réfrigérant du canal (50) par le circuit externe. the supply or discharge of coolant from the channel (50) by the external circuit.
[Revendication 9] Boîtier (16) pour dispositif de stockage d'énergie électrique [Claim 9] Housing (16) for an electrical energy storage device
selon l’une des revendications précédentes dans lequel une paroi latérale (28) se raccorde à la paroi de fond (26), ledit canal étant au moins partiellement formé par la paroi de fond (26) et la paroi latérale (28). according to one of the preceding claims in which a side wall (28) is connected to the bottom wall (26), said channel being at least partially formed by the bottom wall (26) and the side wall (28).
[Revendication 10] Dispositif de stockage d'énergie électrique pour véhicule [Claim 10] Electric energy storage device for vehicle
automobile, comprenant un boîtier (16) selon l’une des revendications automobile, comprising a housing (16) according to one of claims
précédentes et au moins une cellule (14) de stockage d'énergie électrique, notamment une pluralité de cellules (14), reçue dans ledit boîtier (16). above and at least one cell (14) for storing electrical energy, in particular a plurality of cells (14), received in said housing (16).
PCT/FR2019/052838 2018-12-07 2019-11-29 Housing for an electrical energy storage device for a motor vehicle WO2020115404A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1872542A FR3089690B1 (en) 2018-12-07 2018-12-07 Box for an electrical energy storage device for a motor vehicle
FR1872542 2018-12-07

Publications (1)

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WO2020115404A1 true WO2020115404A1 (en) 2020-06-11

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WO (1) WO2020115404A1 (en)

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
DE102012012663A1 (en) * 2012-06-23 2013-12-24 Volkswagen Aktiengesellschaft Housing for carrying and cooling lithium ion battery pack for drive of electric vehicle, has separation body arranged between operating device and trough, where body and trough limit intermediate space to guide coolant in flow-proof design
US20180062224A1 (en) * 2016-08-23 2018-03-01 Benteler Automobiltechnik Gmbh Battery holder with cooling system
DE102016222550A1 (en) * 2016-11-16 2018-05-17 Volkswagen Aktiengesellschaft Floor arrangement for a temperature-controlled battery housing and method for its production
FR3062521A1 (en) * 2018-04-10 2018-08-03 Sogefi Air & Cooling BATTERY UNIT WITH TEMPERATURE CONTROL MEANS INTEGRATED IN THE HOUSING
FR3062749A1 (en) * 2018-04-10 2018-08-10 Sogefi Air & Cooling BATTERY UNIT INTEGRATING THERMAL EXCHANGE AREAS

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
DE102012012663A1 (en) * 2012-06-23 2013-12-24 Volkswagen Aktiengesellschaft Housing for carrying and cooling lithium ion battery pack for drive of electric vehicle, has separation body arranged between operating device and trough, where body and trough limit intermediate space to guide coolant in flow-proof design
US20180062224A1 (en) * 2016-08-23 2018-03-01 Benteler Automobiltechnik Gmbh Battery holder with cooling system
DE102016222550A1 (en) * 2016-11-16 2018-05-17 Volkswagen Aktiengesellschaft Floor arrangement for a temperature-controlled battery housing and method for its production
FR3062521A1 (en) * 2018-04-10 2018-08-03 Sogefi Air & Cooling BATTERY UNIT WITH TEMPERATURE CONTROL MEANS INTEGRATED IN THE HOUSING
FR3062749A1 (en) * 2018-04-10 2018-08-10 Sogefi Air & Cooling BATTERY UNIT INTEGRATING THERMAL EXCHANGE AREAS

Also Published As

Publication number Publication date
FR3089690B1 (en) 2021-08-06
FR3089690A1 (en) 2020-06-12

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