WO2019234351A1 - Device for controlling the temperature of electrical energy storage cells of a large-area battery pack - Google Patents

Device for controlling the temperature of electrical energy storage cells of a large-area battery pack Download PDF

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Publication number
WO2019234351A1
WO2019234351A1 PCT/FR2019/051337 FR2019051337W WO2019234351A1 WO 2019234351 A1 WO2019234351 A1 WO 2019234351A1 FR 2019051337 W FR2019051337 W FR 2019051337W WO 2019234351 A1 WO2019234351 A1 WO 2019234351A1
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WO
WIPO (PCT)
Prior art keywords
shells
plates
stamped
row
control device
Prior art date
Application number
PCT/FR2019/051337
Other languages
French (fr)
Inventor
Jean Damien MULLER
Bruno Payen
Mohamed Ibrahimi
Thibaut PERRIN
Original Assignee
Valeo Systemes Thermiques
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Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2019234351A1 publication Critical patent/WO2019234351A1/en

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Classifications

    • 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
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • 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
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to the field of thermal regulation of batteries, and more particularly batteries fitted to a motor vehicle whose propulsion is provided in whole or in part by an electric motor.
  • the invention relates to the field of thermal regulation devices for batteries comprising several electrical energy storage cells interconnected so as to create an electrical generator voltage and capacity desired.
  • the electrical energy storage cells (hereinafter referred to as “electrical cells”) are positioned in a protective casing forming a so-called battery pack ("battery”). pack "in English).
  • the electric cells - generally arranged at the level of the floor of the vehicle - may be subject to temperature variations that may in some cases cause their damage or even their destruction.
  • the thermal regulation of the electric cells is essential in order, on the one hand, to maintain them in good condition and, on the other hand, to ensure the reliability, the autonomy, and the performance of the vehicle.
  • battery pack covers a more and more consistent surface of the vehicle floor and it even sometimes forms the bottom of the vehicle.
  • battery packs can have dimensions up to 2.5m long and 1.5m wide.
  • a thermal regulation device is conventionally positioned directly in contact with the electric cells, at the bottom of the protective housing, or indirectly in contact with the electric cells in the case of an exchanger placed outside the battery pack.
  • Such a thermal regulation device is traversed by a heat transfer fluid and provides the functions of heating and / or cooling of the electric cells.
  • the heat transfer fluid can thus absorb the heat emitted by each electric cell to cool it or, as needed, it can bring him heat if the temperature of the electric cell is insufficient for its proper operation.
  • the thermal regulation device consists of a plurality of tubes comprising fluid circulation channels whose ends are connected by collectors so as to form a circulation circuit of a coolant.
  • This tube control device technology is simple to implement but has a major disadvantage in that it does not allow the creation of complex fluid circulation circuits adapted to the new size constraints battery packs.
  • the thermal control device consists of a flat plate (called “flat base” in English) on which is crimped or riveted a plate which has been stamped (called “channel plate” in English) to form a hollow imprint with an inlet and a fluid outlet.
  • the indentation forms a conduit or circuit in which a heat transfer fluid can flow from a fluid inlet to a fluid outlet.
  • a disadvantage of this solution lies in the fact that the multiple thermal control devices must be interconnected to allow the distribution of heat transfer fluid, which complicates the assembly and increases the risk of leakage of the heat transfer fluid.
  • the present invention aims to solve these problems of the state of the art and proposes a device for thermal regulation, in particular cooling, of at least one element for storing electrical energy (called “electric cell” in the detailed description which follows) which, according to the invention, comprises two half-shells assembled to one another, the half-shells each comprising at least two stamped plates juxtaposed in the same plane and assembled one to the other, said half-shells delimiting a circuit for circulating a heat-transfer fluid within the thermal regulation device, at least one of said half-shells being intended to come into thermal contact with said at least one electrical energy storage element .
  • electrical cell electrical energy storage element
  • the invention proposes a device for regulating the electrical cells of the battery pack of a hybrid or electric vehicle, which uses two half-shells joined together, each half-shell comprising a plurality of stamped plates juxtaposed.
  • Each stamped plate is shaped so as to form an indentation with at least one inlet and at least one fluid outlet.
  • the thermal control device thus obtained may have dimensions equal to those of the battery pack while each stamped metal plate of the device may have dimensions equal to those of a cell or a group of electric cells (it can thus be provided a plate pressed by cell or group of electric cells to thermally regulate).
  • the solution of the invention therefore does not require a large press to stamp the plates, which reduces the manufacturing costs of the device of the invention.
  • the thermal control device of the invention is flexible and can be adapted to the size and size of the battery pack electric cells to be cooled.
  • the outer surfaces of the half-shells and the peripheral surfaces bordering said outer surfaces are substantially planar.
  • the half-shells have outside surfaces oriented towards the outside of the substantially planar device and flat peripheral edges to, on the one hand, facilitate the joining of the half-shells between them (on their edges), and on the other hand on the other hand, to ensure optimum contact of the stamped plates with the electric cells of the battery pack (via external surfaces).
  • each half-shell may be in direct or indirect thermal contact with the electrical energy storage elements to be thermally regulated.
  • said at least two juxtaposed stamped plates forming at least one of said half-shells are secured by brazing.
  • said half-shells are joined together by brazing.
  • the stamped plates constituting each half-shell are brazed together before the half-shells are then brazed together.
  • This inexpensive joining technique ensures the device of the invention a strong mechanical strength.
  • said at least two stamped plates juxtaposed with one or both half-shells overlap partially.
  • This aspect makes it possible, on the one hand, to facilitate soldering of all the plates together and, on the other hand, to ensure the sealing of the coolant circulation circuit in the device.
  • connection ducts for plates stamped together.
  • each of said half-shells of the device comprises a first row of stamped plates ensuring the supply and distribution of the fluid in the device and a second row of stamped plates ensuring the collection and evacuation of the device. fluid out of the device, and optionally at least one intermediate row of stamped plates.
  • the half-shells forming the thermal control device are therefore each in the form of a matrix consisting of stamped plates juxtaposed and arranged in rows and columns.
  • This modular structure simplifies the assembly of the device while adapting its shape to that of the battery pack and its dimensions to the number of electric cells constituting the battery pack.
  • each half-shell has a corresponding opening.
  • each of the first and second rows comprises at least two types of stamped plates, namely: at least one distribution plate fluidly communicating on the one hand with one or two adjacent stamped plates of said row and on the other hand with a distribution plate of the second row or an intermediate plate of an intermediate row;
  • an end plate fluidly communicating, on the one hand, with an adjacent stamped plate of said row and, on the other hand, with a distribution or end plate of the other row among the first and second rows, or an intermediate plate of an intermediate row.
  • the thermal control device of the invention consists of three types of stamped plates (distribution plates, end plates and intermediate plates) which are standardized during their manufacture and which allow, by assembly, to manufacture a thermal regulation device of complex shape and large size.
  • the intermediate plate is configured to allow the passage of fluid between two rows of stamped plates.
  • Such plates are implemented when the thermal regulation device comprises more than two rows of stamped plates.
  • At least one row of stamped plates of the device comprises at least one turntable plate intended to form a flow of "U" fluid within said at least one row.
  • Such turning plates are implemented when the device has an opening for receiving electronic equipment whose temperature must be regulated by the device.
  • the stamped plates have heat distribution fluid distribution pads.
  • each stamped plate is intended to regulate the temperature of a cell or a group of electric cells.
  • the stamped plates comprise a main heat-transfer fluid supply channel and a so-called cooling channel of one or more electric cells.
  • different heat transfer fluid circulation circuits can be configured in each stamped plate.
  • the thermal regulation device has a shape corresponding to the shape of the battery pack containing the electrical energy storage elements.
  • Figure 1 is an exploded view of a thermal control device according to the invention
  • FIGS 2a to 2d are front views of different types of stamped plate to be implemented in the control device of Figure 1;
  • Figure 3 is a detailed view of the connection between two stamped plates juxtaposed with a half-shell of a thermal control device according to the invention
  • FIG. 4 schematically illustrates the direction of circulation of the heat transfer fluid within the thermal control device of FIG. 1;
  • Figure 5 details the temperature of the heat transfer fluid within the thermal control device, when the fluid flows in the direction of circulation illustrated in Figure 4;
  • FIGS. 6 to 11 diagrammatically illustrate different examples of circulation circuits for the heat transfer fluid that can be implemented in a thermal regulation device according to the invention. 5. Detailed Description of Embodiments
  • FIG. 1 is an exploded view of a thermal regulation device, according to a first embodiment of the invention, of the electric cells (not shown) of the battery pack of a hybrid or electric vehicle.
  • the thermal control device 1 comprises two half-shells 10a, 10b, preferably symmetrically identical, located vis-à-vis, each half-shell 10a, 10b consisting of a plurality of stamped plates 11 juxtaposed.
  • the thermal regulation device 1 thus comprises:
  • an upper half-shell 10a formed by assembling a plurality of stamped plates 11 juxtaposed in the same plane (in this case twenty-five stamped plates 11 in the example of Figure 1);
  • a lower half-shell 10b symmetrically identical to the upper half-shell 10a, formed by assembling an identical number of stamped plates 11 juxtaposed in the same plane.
  • the half-shells 10a, 10b are intended to be secured to one another, preferably by brazing, so as to form a thermal control device 1 according to the invention.
  • the half-shells 10a, 10b preferably have an outer surface (oriented towards the outside of the device 1) substantially flat bordered by a peripheral surface 100a, 100b respectively substantially flat to, on the one hand, facilitate the joining of the half-shells between them (through their peripheral surfaces 100a, 100b), and secondly, to ensure optimum contact of the half-shells 10a, 10b with the electric cells of the battery pack (the outer surface of one or both). half-shells 10a, 10b coming into thermal contact with one or more cells).
  • the half-shells 10a, 10b preferably have a shape and dimensions substantially corresponding to those of the battery pack to be thermally regulated.
  • the thermal regulation device 1 is rectangular and has a parallelepipedal light 101 at its center.
  • This light 101 makes it possible, for example, to receive electronic components whose temperature must also be regulated by the device 1.
  • the stamped plates 11 are juxtaposed and secured so that the half-shells 10a, 10b each have such a light 101 in their center.
  • the stamped plates 11, preferably made of aluminum, are "claded" so as, firstly, to be joined together by soldering to form the half-shells 10a, 10b, and secondly, to allow the joining of the half-shells 10a, 10b between them by brazing.
  • the plates 11 are stamped so as to form on their inner surface pads 117, and in some cases internal walls, to define circulation circuits of a heat transfer fluid within the device 1, when the half-shells 10a, 10b are assembled vis-à-vis.
  • Each half-shell 10a, 10b of the device 1 has, in this example, four distinct types of stamped plates 11 defining three rows of stamped plates 11, namely:
  • end plates 11b which are located in the two corners opposite the inlet connectors 21 and 22 of the heat transfer fluid in the device 1;
  • intermediate plates 11c which are located between the distribution plates 11a or the end plates 11b arranged along the upper edge 102 and the distribution plates 11a or the end plates 11b disposed along the lower edge 103 of the device 1 ; and turning plates 11d which are arranged between the central lumen 101 and each of the upper and lower edges of the device 1.
  • stamped plates 11 make it possible to obtain a device 1 for thermal regulation which may have a complex shape and relatively large dimensions.
  • stamped plates having different shapes and / or fluid circulation circuits, can be implemented according to the configuration of the battery pack embedded in the motor vehicle.
  • the invention makes it possible to free itself from the constraints relating to the size of the presses that produce the large stamped plates since the device of the invention no longer implements a single stamped plate of large size but a plurality of stamped plates whose dimensions are reduced and substantially identical to those of an electric cell or a group of electric cells.
  • the invention thus makes it possible to reduce the manufacturing costs of the thermal regulation devices of the electric cells, or elements for storing electrical energy.
  • Figure 2a illustrates a first type of stamped plate 11, taking the form of a distribution plate 11a of rectangular shape.
  • This stamped distribution plate 11 is disposed in the upper row, said first row, 300 or in the lower row, said second row, 400 placed opposite the upper and lower edges of the device 1 of Figure 1.
  • each of the distribution plates 11a of the device 1 is identical. However, the distribution plates 11a of the second row 400 are inverted with respect to those of the first row 300.
  • each distribution plate 11a comprises a main channel 110 and a cooling channel 113.
  • the latter have several pads (called “dimples" in English) 117 defining a plurality of heat transfer fluid circulation passages.
  • the main channel 110 located on an edge of the distribution plate 11a, is for the supply and distribution of the heat transfer fluid in the distribution plate 11a in the direction of the arrow Fl.
  • the main channel 110 has a heat transfer fluid inlet opening 111 and a heat transfer fluid outlet opening 112 which are coaxial.
  • the inlet opening 111 forms or is in fluid communication with the heat transfer fluid supply inlet connector 21 of the device 1 in the case of the stamped plate 11 of the circuit located at the top left of FIG. the first row.
  • the inlet opening 111 communicates with the outlet opening 112 of the pressed plate 11 adjacent.
  • the outlet opening 112 of the main channel 110 is fluidly connected (or is in fluid communication) to either the inlet opening 111 of the pressed plate 11 adjacent, or to the outlet connector 22 of the heat transfer fluid of the device 1 for the stamped plate 11 of the circuit located at the bottom left of Figure 4, in this case.
  • the main channels 110 of each distribution plate 11a define a heat transfer fluid supply / supply duct for the upper row 300 of the device 1, and a heat transfer fluid collection duct for the lower row 400 of the device 1.
  • the cooling channel 113 allows the circulation of the coolant throughout its width, and between the pads 117, so as to promote heat exchange with the or the electrical cells located vis-à-vis the device 1.
  • a first end of the cooling channel 113 is in fluid communication with the main channel 110 while the second end of the cooling channel 113 has a dispensing opening 114 which allows to distribute the coolant (according to the arrow F2) to an embossed plate 11 adjacent (a distribution plate 11a or an end plate 11b or an intermediate plate 11c in the device of Figure 4 described below).
  • Figure 2b illustrates a second type of stamped plate 11, taking the form of a rectangular end plate 11b.
  • two stamped end plates 11b are situated in the opposite angles to the inlet and outlet connectors 22 of the heat transfer fluid in the device 1.
  • the end plate 11b comprises a main channel 110 and a cooling channel 113.
  • the end plate 11b differs from the distribution plate 11a in that it has no outlet opening since it is disposed in an angle of the device 1.
  • the heat transfer fluid circulates (in the direction of the arrow F3) only from the inlet opening 111 through the cooling channel 113 to exit through the dispensing opening 114 located at the end opposite to that of the entrance opening 111.
  • Figure 2c illustrates a third type of stamped plate 11, taking the form of an intermediate plate 11c.
  • Such intermediate plates 11c stamped are located in the intermediate row 500 which extends between the upper row 300 and the lower row 400 of the device 1 of FIG. 4.
  • the intermediate plates 11c do not comprise a main channel 110.
  • the intermediate plates 11c comprise only a cooling channel 113, each end has a dispensing opening 118 for the passage of heat transfer fluid.
  • These dispensing openings 118 are connected to a dispensing opening 114 or 118 of either another intermediate plate 11c, a distribution plate 11a, or an end plate 11b.
  • the heat transfer fluid therefore passes through the intermediate plate 11c of a distribution opening 118 to the other (in the direction of the arrow F4).
  • Figure 2d illustrates a fourth type of stamped plate 11, taking the form of a turning plate 11d.
  • Such stamped turntables are located between the central lumen 101 and each of the upper and lower edges of the device 1 of FIG. 4.
  • the turning plate 11d has an inner wall 119 which defines the U-shaped circulation circuit.
  • the turning plates 11d have a cooling channel 113 comprising an inlet opening 111 and an outlet opening 112.
  • the heat transfer fluid enters through the inlet opening 111 and then runs through the cooling channel 113 bypassing the inner wall 119 to exit through the outlet opening 112 (according to the circuit illustrated by the arrow F5).
  • the device 1 consists of two half-shells 10a, 10b symmetrically identical, each consisting of several stamped plates 11 juxtaposed in the same plane.
  • the stamped plates 11, whatever their type, are brazed together to form the half-shells 10a, 10b.
  • the half-shells 10a and 10b are also joined together by brazing to form the device 1.
  • the stamped plates 11 adjacent to the same half-shell 10a, 10b may overlap partially.
  • Figure 3 illustrates such overlap between two stamped plates 11 adjacent.
  • each stamped plate 11 has a male element 115 for connection to an embossed plate 11 adjacent.
  • each stamped plate 11 has, correspondingly, a female connector element 116 adapted to cooperate with the male element 115 for connecting an embossed plate 11 adjacent.
  • This technique makes it possible to dispense with the use of additional connection ducts and seals between the stamped plates, which, in known manner, increase the risk of leakage of the coolant.
  • This technique according to which the stamped plates 11 are brazed together makes it possible, in addition, to eliminate, or at least limit, the risk of leakage of the coolant out of the device 1.
  • the stamped plates 11 have studs, or cells, protruding 117 (called “dimples” in English) which extend towards the stamped plate 11 located vis-à-vis and which are in contact with the latter, for example with a pad of the latter disposed vis-à-vis, after assembly of the device 1.
  • pads 117 are intended, on the one hand, to improve the mechanical strength of the device 1 to the pressure of the coolant and, on the other hand, to promote the distribution of the heat transfer fluid in the circulation circuit within the device 1 (but also within each stamped plate 11, regardless of its type).
  • the flow rate of fluid in each stamped plate 11 is a function of the number (or density) and the dimensions of the pads 117 used.
  • the pads 117 located in the cooling channel 113 of the stamped plates allow to distribute the fluid throughout the latter so as to optimize the heat exchange surface of the device 1 with the electric cells.
  • FIG. 4 illustrates, in plan view, an example of an overall circulation circuit of a thermal regulation device 1 according to the invention.
  • the overall circulation circuit of the heat transfer fluid is a U-shaped circuit, the input and output connectors 22 of the fluid being arranged on the same side edge of the device 1.
  • the device 1 has, as in Figure 1, a central lumen 101 that can receive one or more electronic equipment to be cooled.
  • the device 1 comprises two half-shells 10a, 10b, each comprising: twelve distribution plates 11a distributed in two upper and lower rows 300, 400 respectively extending along the upper and lower edges of the device 1 of FIG. 4;
  • the heat transfer fluid entering through the inlet connector 21 in the device 1 is distributed over the entire length of the device 1 (according to the arrow Fil) through the main channels 110 of the distribution plates 11a and 11a. end 11b of the upper row 300.
  • the fluid then flows in the cooling channels 113 of all the stamped plates 11 of the device 1 to the lower row 400, via the intermediate row 500 (according to the arrows F12).
  • the turning plates 11d have a particular function since they have an internal "U" circuit which makes it possible to circulate the coolant (according to the arrow F5) from the inlet opening 111 to the outlet opening 112 via the cooling channel 113 (as illustrated in Figure 2d).
  • This particular circulation within the turning plates 11d is imposed by the configuration of the device 1 having a central lumen 101.
  • FIG. 5 details the average temperature of the coolant circulating in the device 1 according to the heat transfer fluid circulation circuit described in FIG. 4, in each of the zones defined by the stamped plates 11.
  • the temperature difference between the minimum temperature (here at the input of the device 1) which is 25 ° C and the maximum temperature (here in the turntable located in the lower row) which 28.9 ° C is relatively low .
  • the device 1 for thermal regulation according to the invention is efficient in that it allows a quasi-homogeneous thermal regulation of the battery cells.
  • FIGS. 6 to 11 diagrammatically illustrate different examples of circulation circuits of the heat transfer fluid that can be implemented in a thermal regulation device according to the invention.
  • the regulating device 1 comprises another half-shell 10b, symmetrically identical to the half-shell 10a.
  • FIG. 6 shows an example of a thermal regulation device 1 having a U-shaped circulation circuit in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising two upper and lower rows. 300, 400 of five stamped plates 11.
  • each row comprises four distribution plates 11a and an end plate 11b.
  • the input connectors 21 and 22 of the heat transfer fluid in the device 1 are on the same side edge (left in this case).
  • the heat transfer fluid enters through the input connector 21 in the device 1 and is distributed over the entire length of the device 1 (according to the arrow Fil) through the channels main 110 distribution plates 11a and end 11b of the upper row 300.
  • FIG. 7 illustrates an example of a thermal regulation device 1 having a circulation circuit in "1" in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising two rows of five stamped plates 11.
  • each row comprises four distribution plates 11a and an end plate 11b.
  • this device 1 is substantially identical to those previously described except that the outlet connector 22 of the coolant is located on a side edge opposite the input connector 21.
  • FIG. 8 illustrates an example of a thermal regulation device 1 having a "U" circulation circuit in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising two rows of ten stamped plates 11.
  • the circulation of the heat transfer fluid within this device is identical to that of the device of FIG. 6, the number of stamped plates 11 per row being here doubled.
  • FIG. 9 illustrates an example of a thermal regulation device 1 having a "U" circulation circuit in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising three rows of ten stamped plates 11.
  • the circulation of the heat transfer fluid within this device is identical to that of the device of FIG. 8. However, it can be seen that a row 500 of intermediate plates 11c is interposed between the rows of stamped plates 11 upper 300 and lower 400.
  • this device 1 The operation of this device 1 is similar to that described with reference to FIG. 4 except that this device 1 does not have a central lumen intended to receive electronic equipment to be thermally regulated.
  • FIG. 10 illustrates a variant of the thermal regulation device of FIG. 4 in which the global circulation circuit is a "U" circuit and the pairs of numbered plates 7, 9 and 8, 10 are configured to define a "U" circulation in parallel with the distribution and collection ducts of the device 1.
  • FIG. 11 diagrammatically illustrates the circuit for circulating the coolant inside the thermal control device 1 previously described in relation with FIG. 4.
  • the thermal control device 1 of the invention thus consists of an assembly of two half-shells 10a, 10b each consisting of stamped plates 11 of different types, whose shape and dimensions are adapted to those of the battery-pack.
  • the joining between them and on the first half-shell of the stamped plates 11 of the second half-shell is implemented by a contribution of external material, by means of a clade strip, for example.
  • none of the plates are clad.
  • the joining of the plates together is then performed by a bonding process.
  • the bonding process is not limited to the type of glue (epoxy, silicone, polyurethane, mono / bi-components), nor to a curing process (called "curing" in English) at room temperature or at a predetermined temperature.
  • the inlet 21 and outlet 22 of the heat transfer fluid in the device 1 are preferably uncladed in order to guarantee an optimal surface condition at the connector.
  • these connectors are clad and a resumption in machining can be performed to ensure an optimal surface condition.
  • the location of the input connectors 21 and 22 of the heat transfer fluid in the device 1 is not limited to the examples described above.
  • the connectors 21, 22 may, without limitation, be:
  • the dimensions of the stamped plates are preferably equivalent to the dimensions of the electric cells so that the temperature of each electric cell is regulated by a single stamped plate.
  • the electric cells generally have a size of 350mm long and 150mm wide.
  • the dimensions of the stamped plates are equal to the dimensions of a group of electric cells.
  • the stamped plates are further adapted:
  • the thermal control device of the invention makes it possible to cool and, where appropriate, to heat the electric cells.
  • the thermal control device 1 of the invention comprises two half-shells, symmetrically identical, each comprising a plurality of stamped plates juxtaposed in the same plane. It should be noted that it can also be considered that the thermal control device according to the invention is obtained by assembling a plurality of shells, each shell consisting of a pair of stamped plates.
  • the shells each comprise two stamped plates, symmetrically identical, secured vis-a-vis.
  • the shells (that is to say the pairs of stamped plates) are then secured to each other in the same plane to obtain a thermal regulation device 1 of shape and desired dimensions.

Abstract

The present invention relates to a temperature control device (1) for controlling the temperature, in particular cooling, of at least one electrical energy storage element. According to the invention, the temperature control device (1) comprises two half-shells (10a, 10b) assembled together, the half-shells (10a, 10b) each comprising at least two stamped plates (11) juxtaposed in a same plane and assembled together, said half-shells (10a, 10b) delimiting a circuit for a heat-transfer fluid to flow inside the temperature control device (1), at least one of said half-shells (10a, 10b) being intended to come into thermal contact with said at least one electrical energy storage element.

Description

DISPOSITIF DE REGULATION THERMIQUE DE CELLULES DE STOCKAGE D'ENERGIE ELECTRIQUE D'UN PACK-BATTERIE DE GRANDE SURFACE  DEVICE FOR THERMALLY CONTROLLING ELECTRIC ENERGY STORAGE CELLS OF A LARGE SURFACE BATTERY PACK
1. Domaine de l'invention  1. Field of the invention
L'invention se rapporte au domaine de la régulation thermique des batteries, et plus particulièrement des batteries équipant un véhicule automobile dont la propulsion est fournie en tout ou partie par une motorisation électrique.  The invention relates to the field of thermal regulation of batteries, and more particularly batteries fitted to a motor vehicle whose propulsion is provided in whole or in part by an electric motor.
Plus précisément, l'invention se rapporte au domaine des dispositifs de régulation thermique pour batteries comprenant plusieurs cellules de stockage d'énergie électrique reliées entre elles de façon à créer un générateur électrique de tension et de capacité désirée.  More specifically, the invention relates to the field of thermal regulation devices for batteries comprising several electrical energy storage cells interconnected so as to create an electrical generator voltage and capacity desired.
2. Art antérieur 2. Prior Art
Dans le domaine des véhicules électriques et hybrides, les cellules de stockage d’énergie électrique (appelées « cellules électriques » dans ce qui suit) sont positionnées dans un boîtier de protection formant ce que l’on appelle un pack-batterie (« battery- pack » en anglais).  In the field of electric and hybrid vehicles, the electrical energy storage cells (hereinafter referred to as "electrical cells") are positioned in a protective casing forming a so-called battery pack ("battery"). pack "in English).
Lors du fonctionnement du véhicule, les cellules électriques - généralement disposées au niveau du plancher du véhicule - peuvent être soumises à des variations de température pouvant provoquer dans certains cas leur endommagement, voire leur destruction.  During the operation of the vehicle, the electric cells - generally arranged at the level of the floor of the vehicle - may be subject to temperature variations that may in some cases cause their damage or even their destruction.
Par conséquent, la régulation thermique des cellules électriques est essentielle afin, d'une part, de les maintenir en bon état et, d'autre part, d'assurer la fiabilité, l’autonomie, et la performance du véhicule.  Therefore, the thermal regulation of the electric cells is essential in order, on the one hand, to maintain them in good condition and, on the other hand, to ensure the reliability, the autonomy, and the performance of the vehicle.
Les constructeurs automobiles cherchent, par ailleurs, aujourd'hui à fournir des véhicules électriques ou hybrides plus puissants et dont l'autonomie électrique est augmentée.  Automakers are also seeking today to provide more powerful electric or hybrid vehicles with increased electric range.
Pour cela, un nombre de plus en plus important de cellules électriques est embarqué dans les véhicules.  For this, a growing number of electric cells is embedded in the vehicles.
Ainsi, le pack-batterie couvre une surface de plus en plus conséquente du plancher du véhicule et il forme même parfois le fond de caisse du véhicule. A titre d'exemple, les pack-batteries peuvent présenter des dimensions allant jusqu'à 2,5m de long sur 1,5m de large. Thus, the battery pack covers a more and more consistent surface of the vehicle floor and it even sometimes forms the bottom of the vehicle. For example, battery packs can have dimensions up to 2.5m long and 1.5m wide.
Les dispositifs destinés à réguler la température de ces cellules électriques doivent donc s'étendre sur des surfaces équivalentes pour optimiser le fonctionnement des cellules électriques.  Devices for regulating the temperature of these electric cells must therefore extend to equivalent surfaces to optimize the operation of the electric cells.
Un dispositif de régulation thermique est classiquement positionné directement au contact des cellules électriques, au fond du boîtier de protection, ou indirectement au contact des cellules électriques dans le cas d'un échangeur placé à l'extérieur du pack batterie.  A thermal regulation device is conventionally positioned directly in contact with the electric cells, at the bottom of the protective housing, or indirectly in contact with the electric cells in the case of an exchanger placed outside the battery pack.
Un tel dispositif de régulation thermique est parcouru par un fluide caloporteur et assure les fonctions de chauffage et/ou de refroidissement des cellules électriques.  Such a thermal regulation device is traversed by a heat transfer fluid and provides the functions of heating and / or cooling of the electric cells.
Le fluide caloporteur peut ainsi absorber la chaleur émise par chaque cellule électrique afin de la refroidir ou, selon les besoins, il peut lui apporter de la chaleur si la température de la cellule électrique est insuffisante pour son bon fonctionnement.  The heat transfer fluid can thus absorb the heat emitted by each electric cell to cool it or, as needed, it can bring him heat if the temperature of the electric cell is insufficient for its proper operation.
Deux technologies de dispositifs de régulation thermique des cellules électriques d'une batterie d'un véhicule sont connues, à savoir la technologie à tubes et la technologie à plaques.  Two technologies of thermal regulation devices of the electric cells of a battery of a vehicle are known, namely tube technology and plate technology.
Dans la première technologie, le dispositif de régulation thermique est constitué d'une pluralité de tubes comprenant des canaux de circulation du fluide dont les extrémités sont reliées par des collecteurs de sorte à former un circuit de circulation d'un fluide caloporteur.  In the first technology, the thermal regulation device consists of a plurality of tubes comprising fluid circulation channels whose ends are connected by collectors so as to form a circulation circuit of a coolant.
Cette technologie de dispositif de régulation à tubes est simple à réaliser mais présente un inconvénient majeur en ce qu'elle ne permet pas de créer des circuits de circulation du fluide complexes adaptés aux nouvelles contraintes de dimension des pack-batteries.  This tube control device technology is simple to implement but has a major disadvantage in that it does not allow the creation of complex fluid circulation circuits adapted to the new size constraints battery packs.
Dans la seconde technologie, le dispositif de régulation thermique est constitué d'une plaque plane (appelée « base plate » en anglais) sur laquelle est sertie ou rivetée une plaque qui a été emboutie (appelée « channel plate » en anglais) afin de former une empreinte en creux avec une entrée et une sortie de fluide.  In the second technology, the thermal control device consists of a flat plate (called "flat base" in English) on which is crimped or riveted a plate which has been stamped (called "channel plate" in English) to form a hollow imprint with an inlet and a fluid outlet.
Une fois les plaques assemblées l’une sur l’autre, l’empreinte en creux forme un conduit ou circuit dans lequel peut circuler un fluide caloporteur depuis une entrée de fluide vers une sortie de fluide. Cette deuxième technologie permet de créer, par la mise en oeuvre de plaques embouties, des circuits de circulation du fluide caloporteur complexes. Once the plates are assembled one on the other, the indentation forms a conduit or circuit in which a heat transfer fluid can flow from a fluid inlet to a fluid outlet. This second technology makes it possible to create, by the use of stamped plates, complex circulating heat transfer fluid circuits.
Néanmoins, un inconvénient de cette technologie à plaques réside dans le fait que la fabrication de plaques embouties de grandes dimensions est complexe et coûteuse du fait qu'elle nécessite l'utilisation de presses de grande taille.  Nevertheless, a disadvantage of this plate technology lies in the fact that the manufacture of large stamped plates is complex and expensive because it requires the use of large presses.
Pour résoudre ce problème, il a été proposé d'associer un dispositif de régulation thermique à plaques à chaque cellule électrique de la batterie.  To solve this problem, it has been proposed to associate a thermal plate control device with each electric cell of the battery.
Un inconvénient de cette solution réside dans le fait que les multiples dispositifs de régulation thermique doivent être reliés entre eux pour permettre la distribution du fluide caloporteur, ce qui complexifie l'assemblage et augmente les risques de fuite du fluide caloporteur.  A disadvantage of this solution lies in the fact that the multiple thermal control devices must be interconnected to allow the distribution of heat transfer fluid, which complicates the assembly and increases the risk of leakage of the heat transfer fluid.
Cette solution ne donne donc pas non plus entièrement satisfaction.  This solution does not give entirely satisfactory either.
3. Résumé de l'invention 3. Summary of the invention
La présente invention a pour objet de résoudre ces problèmes de l’état de l’art et propose un dispositif de régulation thermique, notamment de refroidissement, d’au moins un élément de stockage d'énergie électrique (appelé "cellule électrique" dans la description détaillée qui suit) qui, selon l'invention, comprend deux demi-coques assemblées l’une à l’autre, les demi-coques comprenant chacune au moins deux plaques embouties juxtaposées dans un même plan et assemblées l’une à l’autre, lesdites demi- coques délimitant un circuit de circulation d'un fluide caloporteur au sein du dispositif de régulation thermique, au moins une desdites demi-coques étant destinée à venir en contact thermique avec ledit au moins un élément de stockage d'énergie électrique.  The present invention aims to solve these problems of the state of the art and proposes a device for thermal regulation, in particular cooling, of at least one element for storing electrical energy (called "electric cell" in the detailed description which follows) which, according to the invention, comprises two half-shells assembled to one another, the half-shells each comprising at least two stamped plates juxtaposed in the same plane and assembled one to the other, said half-shells delimiting a circuit for circulating a heat-transfer fluid within the thermal regulation device, at least one of said half-shells being intended to come into thermal contact with said at least one electrical energy storage element .
L'invention propose un dispositif de régulation thermique des cellules électriques du pack-batterie d'un véhicule hybride ou électrique, qui met en oeuvre deux demi-coques solidarisées entre elles, chaque demi-coque comprenant une pluralité de plaques embouties juxtaposées.  The invention proposes a device for regulating the electrical cells of the battery pack of a hybrid or electric vehicle, which uses two half-shells joined together, each half-shell comprising a plurality of stamped plates juxtaposed.
Chaque plaque emboutie est conformée de sorte à former une empreinte en creux avec au moins une entrée et au moins une sortie de fluide.  Each stamped plate is shaped so as to form an indentation with at least one inlet and at least one fluid outlet.
Une fois les plaques embouties assemblées entre elles, d'une part pour former les demi-coques, et d'autre part pour solidariser les deux demi-coques, l’ensemble délimite un conduit ou circuit intérieur dans lequel peut circuler un fluide caloporteur depuis une entrée de fluide vers une sortie de fluide. Once the stamped plates assembled together, on the one hand to form the half-shells, and on the other hand to secure the two half-shells, all defines a conduit or internal circuit in which a heat transfer fluid can flow from a fluid inlet to a fluid outlet.
Cette solution permet de fabriquer aisément et à un coût relativement faible des dispositifs de régulation thermique de grande taille et de forme complexe, qui sont particulièrement adaptés aux pack-batteries présentant des grandes surfaces.  This solution makes it possible to easily manufacture, at a relatively low cost, large and complex shaped thermal regulation devices, which are particularly suitable for battery packs having large areas.
Le dispositif de régulation thermique ainsi obtenu peut présenter des dimensions égales à celles du pack-batterie tandis que chaque plaque métallique emboutie du dispositif peut présenter des dimensions égales à celles d'une cellule ou d'un groupement de cellules électriques (il peut ainsi être prévu une plaque emboutie par cellule ou groupement de cellules électriques à réguler thermiquement).  The thermal control device thus obtained may have dimensions equal to those of the battery pack while each stamped metal plate of the device may have dimensions equal to those of a cell or a group of electric cells (it can thus be provided a plate pressed by cell or group of electric cells to thermally regulate).
La solution de l’invention ne nécessite donc pas de presse de grande taille pour emboutir les plaques, ce qui réduit les coûts de fabrication du dispositif de l'invention.  The solution of the invention therefore does not require a large press to stamp the plates, which reduces the manufacturing costs of the device of the invention.
Du fait qu’il soit réalisé par assemblage d'une pluralité de plaques embouties, le dispositif de régulation thermique de l'invention est modulable et peut être adapté à la taille et la dimension des cellules électriques du pack-batterie à refroidir.  Because it is made by assembling a plurality of stamped plates, the thermal control device of the invention is flexible and can be adapted to the size and size of the battery pack electric cells to be cooled.
Selon un aspect particulier de l'invention, les surfaces extérieures des demi- coques et les surfaces périphériques bordant lesdites surfaces extérieures sont sensiblement planes.  According to a particular aspect of the invention, the outer surfaces of the half-shells and the peripheral surfaces bordering said outer surfaces are substantially planar.
Ainsi, les demi-coques présentent des surfaces extérieures orientées vers l'extérieur du dispositif sensiblement planes et des bords périphériques plats pour, d'une part, faciliter la solidarisation des demi-coques entre elles (sur leurs bords), et d'autre part, assurer un contact optimal des plaques embouties avec les cellules électriques du pack-batterie (par le biais des surfaces extérieures).  Thus, the half-shells have outside surfaces oriented towards the outside of the substantially planar device and flat peripheral edges to, on the one hand, facilitate the joining of the half-shells between them (on their edges), and on the other hand on the other hand, to ensure optimum contact of the stamped plates with the electric cells of the battery pack (via external surfaces).
La surface extérieure de chaque demi-coque peut être en contact thermique, direct ou indirect, avec les éléments de stockage d'énergie électrique à réguler thermiquement.  The outer surface of each half-shell may be in direct or indirect thermal contact with the electrical energy storage elements to be thermally regulated.
Selon un autre aspect particulier de l'invention, lesdites au moins deux plaques embouties juxtaposées formant au moins une desdites demi-coques sont solidarisées par brasage.  According to another particular aspect of the invention, said at least two juxtaposed stamped plates forming at least one of said half-shells are secured by brazing.
Selon encore un autre aspect particulier de l'invention, lesdites demi-coques sont solidarisées entre elles par brasage. Les plaques embouties constituant chaque demi-coque sont donc brasées entre elles avant que les demi-coques ne soient ensuite brasées entre elles. According to yet another particular aspect of the invention, said half-shells are joined together by brazing. The stamped plates constituting each half-shell are brazed together before the half-shells are then brazed together.
Cette technique de solidarisation peu coûteuse permet d'assurer au dispositif de l'invention une forte résistance mécanique.  This inexpensive joining technique ensures the device of the invention a strong mechanical strength.
Selon encore un autre aspect particulier de l'invention, lesdites au moins deux plaques embouties juxtaposées d'une ou des deux demi-coques se chevauchent partiellement.  According to yet another particular aspect of the invention, said at least two stamped plates juxtaposed with one or both half-shells overlap partially.
Cet aspect permet d'une part de faciliter le brasage de l'ensemble des plaques entre elles et d'autre part d'assurer l'étanchéité du circuit de circulation du fluide caloporteur dans le dispositif.  This aspect makes it possible, on the one hand, to facilitate soldering of all the plates together and, on the other hand, to ensure the sealing of the coolant circulation circuit in the device.
Cela permet en outre de s'affranchir de l'utilisation de conduits de raccordement des plaques embouties entre elles.  This also makes it possible to avoid the use of connection ducts for plates stamped together.
Ainsi, l’assemblage est simplifié et les risques de fuite du fluide caloporteur sont diminués.  Thus, the assembly is simplified and the risks of leakage of the heat transfer fluid are reduced.
Selon un aspect particulier de l'invention, chacune desdites demi-coques du dispositif comprend une première rangée de plaques embouties assurant l’alimentation et la distribution du fluide dans le dispositif et une deuxième rangée de plaques embouties assurant la collecte et l’évacuation du fluide hors du dispositif, et optionnellement au moins une rangée intermédiaire de plaques embouties.  According to a particular aspect of the invention, each of said half-shells of the device comprises a first row of stamped plates ensuring the supply and distribution of the fluid in the device and a second row of stamped plates ensuring the collection and evacuation of the device. fluid out of the device, and optionally at least one intermediate row of stamped plates.
Les demi-coques formant le dispositif de régulation thermique se présentent donc chacune sous la forme d'une matrice constituée de plaques embouties juxtaposées et agencées selon des rangées et des colonnes.  The half-shells forming the thermal control device are therefore each in the form of a matrix consisting of stamped plates juxtaposed and arranged in rows and columns.
Cette structure modulaire permet de simplifier l'assemblage du dispositif tout en adaptant sa forme à celle du pack-batterie et ses dimensions au nombre de cellules électriques constituant le pack-batterie.  This modular structure simplifies the assembly of the device while adapting its shape to that of the battery pack and its dimensions to the number of electric cells constituting the battery pack.
Il peut être prévu qu’un ou plusieurs emplacements d’une rangée ou d’une colonne de la matrice soient traversant pour recevoir des équipements électroniques dont la température doit être régulée par le dispositif de l’invention. Pour ces emplacements, chaque demi-coque présente une ouverture correspondante.  It may be provided that one or more locations in a row or column of the array are traversing to receive electronic equipment whose temperature is to be regulated by the device of the invention. For these locations, each half-shell has a corresponding opening.
Selon un autre aspect particulier de l'invention, chacune des première et deuxième rangées comprend au moins deux types de plaques embouties, à savoir : au moins une plaque de distribution communiquant fluidiquement d'une part avec une ou deux plaques embouties adjacentes de ladite rangée et d'autre part avec une plaque de distribution de la deuxième rangée ou une plaque intermédiaire d'une rangée intermédiaire ; According to another particular aspect of the invention, each of the first and second rows comprises at least two types of stamped plates, namely: at least one distribution plate fluidly communicating on the one hand with one or two adjacent stamped plates of said row and on the other hand with a distribution plate of the second row or an intermediate plate of an intermediate row;
une plaque d'extrémité communiquant fluidiquement, d'une part, avec une plaque emboutie adjacente de ladite rangée et, d'autre part, avec une plaque de distribution ou d'extrémité de l'autre rangée parmi les première et deuxième rangées ou bien une plaque intermédiaire d'une rangée intermédiaire.  an end plate fluidly communicating, on the one hand, with an adjacent stamped plate of said row and, on the other hand, with a distribution or end plate of the other row among the first and second rows, or an intermediate plate of an intermediate row.
Ainsi, le dispositif de régulation thermique de l'invention est constitué de trois types de plaques embouties (les plaques de distribution, les plaques d'extrémité et les plaques intermédiaires) qui sont standardisées lors de leur fabrication et qui permettent, par assemblage, de fabriquer un dispositif de régulation thermique de forme complexe et de grande dimension.  Thus, the thermal control device of the invention consists of three types of stamped plates (distribution plates, end plates and intermediate plates) which are standardized during their manufacture and which allow, by assembly, to manufacture a thermal regulation device of complex shape and large size.
A partir de ces trois types de plaques embouties, il est donc possible de répondre à une majorité des besoins des constructeurs.  From these three types of stamped plates, it is therefore possible to meet a majority of the needs of manufacturers.
Selon un aspect particulier de l'invention, la plaque intermédiaire est configurée pour permettre le passage du fluide entre deux rangées de plaques embouties.  According to a particular aspect of the invention, the intermediate plate is configured to allow the passage of fluid between two rows of stamped plates.
De telles plaques sont mises en oeuvre lorsque le dispositif de régulation thermique comprend plus de deux rangées de plaques embouties.  Such plates are implemented when the thermal regulation device comprises more than two rows of stamped plates.
Selon un aspect de l'invention, au moins une rangée de plaques embouties du dispositif comprend au moins une plaque de retournement destinée à former une circulation du fluide en "U" au sein de ladite au moins une rangée.  According to one aspect of the invention, at least one row of stamped plates of the device comprises at least one turntable plate intended to form a flow of "U" fluid within said at least one row.
De telles plaques de retournement sont mises en oeuvre lorsque le dispositif présente une ouverture permettant de recevoir des équipements électroniques dont la température doit être régulée par le dispositif.  Such turning plates are implemented when the device has an opening for receiving electronic equipment whose temperature must be regulated by the device.
Selon un autre aspect de l'invention, les plaques embouties présentent des plots de répartition du fluide caloporteur.  According to another aspect of the invention, the stamped plates have heat distribution fluid distribution pads.
Ces plots permettent de répartir et de distribuer le fluide caloporteur au sein et entre les plaques embouties du dispositif.  These pads make it possible to distribute and distribute the heat transfer fluid within and between the pressed plates of the device.
En outre, les plots permettent de rigidifier le dispositif de sorte qu'il puisse résister aux contraintes mécaniques subies lors du brasage et aux contraintes de pression du fluide lors du fonctionnement du dispositif. Selon un aspect de l'invention, chaque plaque emboutie est destinée à réguler la température d'une cellule ou d'un groupement de cellules électriques. In addition, the pads make it possible to stiffen the device so that it can withstand the mechanical stresses experienced during soldering and the pressure stresses of the fluid during operation of the device. According to one aspect of the invention, each stamped plate is intended to regulate the temperature of a cell or a group of electric cells.
Selon un autre aspect particulier de l'invention, les plaques embouties comprennent un canal principal d'alimentation en fluide caloporteur et un canal dit de refroidissement d’une ou plusieurs cellules électriques.  According to another particular aspect of the invention, the stamped plates comprise a main heat-transfer fluid supply channel and a so-called cooling channel of one or more electric cells.
Selon un autre aspect particulier de l'invention, des circuits de circulation du fluide caloporteur différents peuvent être configurés dans chaque plaque emboutie.  According to another particular aspect of the invention, different heat transfer fluid circulation circuits can be configured in each stamped plate.
Selon un autre aspect particulier de l'invention, le dispositif de régulation thermique présente une forme correspondante à la forme du pack-batterie contenant les éléments de stockage d'énergie électrique.  According to another particular aspect of the invention, the thermal regulation device has a shape corresponding to the shape of the battery pack containing the electrical energy storage elements.
4. Figures 4. Figures
D’autres caractéristiques et avantages apparaîtront plus clairement à la lecture de la description détaillée suivante de modes de réalisation particuliers de l'invention, donnés à titres de simples exemples illustratifs et non limitatifs, et des dessins annexés, parmi lesquels :  Other features and advantages will appear more clearly on reading the following detailed description of particular embodiments of the invention, given as simple illustrative and non-limiting examples, and the appended drawings, among which:
la figure 1 est une vue éclatée d'un dispositif de régulation thermique conforme à l'invention ;  Figure 1 is an exploded view of a thermal control device according to the invention;
les figures 2a à 2d sont des vues de face de différents types de plaque emboutie destinées à être mises en oeuvre dans le dispositif de régulation de la figure 1 ;  Figures 2a to 2d are front views of different types of stamped plate to be implemented in the control device of Figure 1;
la figure 3 est une vue de détail de la connexion entre deux plaques embouties juxtaposées d'une demi-coque d’un dispositif de régulation thermique conforme à l'invention ;  Figure 3 is a detailed view of the connection between two stamped plates juxtaposed with a half-shell of a thermal control device according to the invention;
la figure 4 illustre de façon schématique le sens de circulation du fluide caloporteur au sein du dispositif de régulation thermique de la figure 1 ;  FIG. 4 schematically illustrates the direction of circulation of the heat transfer fluid within the thermal control device of FIG. 1;
la figure 5 détaille la température du fluide caloporteur au sein du dispositif de régulation thermique, lorsque le fluide circule dans le sens de circulation illustré sur la figure 4 ;  Figure 5 details the temperature of the heat transfer fluid within the thermal control device, when the fluid flows in the direction of circulation illustrated in Figure 4;
les figures 6 à 11 illustrent schématiquement différents exemples de circuits de circulation du fluide caloporteur pouvant être mis en oeuvre dans un dispositif de régulation thermique conforme à l'invention. 5. Description détaillée de modes de réalisation FIGS. 6 to 11 diagrammatically illustrate different examples of circulation circuits for the heat transfer fluid that can be implemented in a thermal regulation device according to the invention. 5. Detailed Description of Embodiments
Sur les différentes figures, sauf indication contraire, les éléments identiques portent les mêmes numéros de référence et présentent les mêmes caractéristiques techniques et modes de fonctionnement.  In the different figures, unless otherwise indicated, the identical elements bear the same reference numbers and have the same technical characteristics and operating modes.
La figure 1 est une vue éclatée d'un dispositif de régulation thermique, selon un premier mode de réalisation de l'invention, des cellules électriques (non illustrés) du pack-batterie d'un véhicule hybride ou électrique.  FIG. 1 is an exploded view of a thermal regulation device, according to a first embodiment of the invention, of the electric cells (not shown) of the battery pack of a hybrid or electric vehicle.
Le dispositif 1 de régulation thermique comprend deux demi-coques 10a, 10b, de préférence symétriquement identiques, situées en vis-à-vis, chaque demi-coque 10a, 10b étant constituée d'une pluralité de plaques embouties 11 juxtaposées.  The thermal control device 1 comprises two half-shells 10a, 10b, preferably symmetrically identical, located vis-à-vis, each half-shell 10a, 10b consisting of a plurality of stamped plates 11 juxtaposed.
Le dispositif 1 de régulation thermique comprend donc :  The thermal regulation device 1 thus comprises:
une demi-coque 10a supérieure formée par assemblage d'une pluralité de plaques embouties 11 juxtaposées dans un même plan (en l’occurrence vingt-cinq plaques embouties 11 dans l’exemple de la figure 1) ; et  an upper half-shell 10a formed by assembling a plurality of stamped plates 11 juxtaposed in the same plane (in this case twenty-five stamped plates 11 in the example of Figure 1); and
une demi-coque 10b inférieure, symétriquement identique à la demi- coque 10a supérieure, formée par assemblage d'un nombre identique de plaques embouties 11 juxtaposées dans un même plan.  a lower half-shell 10b, symmetrically identical to the upper half-shell 10a, formed by assembling an identical number of stamped plates 11 juxtaposed in the same plane.
Les demi-coques 10a, 10b sont destinées à être solidarisées l'une à l'autre, préférentiellement par brasage, de sorte à former un dispositif 1 de régulation thermique conforme à l'invention.  The half-shells 10a, 10b are intended to be secured to one another, preferably by brazing, so as to form a thermal control device 1 according to the invention.
Les demi-coques 10a, 10b présentent de préférence une surface extérieure (orientée vers l’extérieur du dispositif 1) sensiblement plane bordée par une surface périphérique 100a, 100b respectivement sensiblement plane pour, d'une part, faciliter la solidarisation des demi-coques entre elles (par le biais de leurs surfaces périphériques 100a, 100b), et d'autre part, assurer un contact optimal des demi-coques 10a, 10b avec les cellules électriques du pack-batterie (la surface extérieure d’une ou des deux demi- coques 10a, 10b venant au contact thermique d’une ou de plusieurs cellules).  The half-shells 10a, 10b preferably have an outer surface (oriented towards the outside of the device 1) substantially flat bordered by a peripheral surface 100a, 100b respectively substantially flat to, on the one hand, facilitate the joining of the half-shells between them (through their peripheral surfaces 100a, 100b), and secondly, to ensure optimum contact of the half-shells 10a, 10b with the electric cells of the battery pack (the outer surface of one or both). half-shells 10a, 10b coming into thermal contact with one or more cells).
Les demi-coques 10a, 10b présentent, de préférence, une forme et des dimensions sensiblement correspondantes à celles du pack batterie devant être régulé thermiquement. Dans cet exemple, le dispositif 1 de régulation thermique est rectangulaire et présente une lumière 101 parallélépipédique en son centre. The half-shells 10a, 10b preferably have a shape and dimensions substantially corresponding to those of the battery pack to be thermally regulated. In this example, the thermal regulation device 1 is rectangular and has a parallelepipedal light 101 at its center.
Cette lumière 101 permet, par exemple, de recevoir des composants électroniques dont la température doit également être régulée par le dispositif 1.  This light 101 makes it possible, for example, to receive electronic components whose temperature must also be regulated by the device 1.
Les plaques embouties 11 sont juxtaposées et solidarisées de sorte à ce que les demi-coques 10a, 10b présentent chacune une telle lumière 101 en leur centre.  The stamped plates 11 are juxtaposed and secured so that the half-shells 10a, 10b each have such a light 101 in their center.
Les plaques embouties 11, de préférence fabriquées en aluminium, sont "cladées" afin d'une part, d'être solidarisées entre elles par brasage pour former les demi-coques 10a, 10b, et d'autre part, de permettre la solidarisation des demi-coques 10a, 10b entre elles par brasage.  The stamped plates 11, preferably made of aluminum, are "claded" so as, firstly, to be joined together by soldering to form the half-shells 10a, 10b, and secondly, to allow the joining of the half-shells 10a, 10b between them by brazing.
Les plaques 11 sont embouties de sorte à former sur leur surface intérieure des plots 117, et dans certains cas des parois internes, pour définir des circuits de circulation d'un fluide caloporteur au sein du dispositif 1, lorsque les demi-coques 10a, 10b sont assemblées en vis-à-vis.  The plates 11 are stamped so as to form on their inner surface pads 117, and in some cases internal walls, to define circulation circuits of a heat transfer fluid within the device 1, when the half-shells 10a, 10b are assembled vis-à-vis.
Ainsi, il est possible de configurer le circuit de circulation du fluide caloporteur de deux plaques embouties 11 situées en vis-à-vis par le biais des plots 117 et de parois internes.  Thus, it is possible to configure the circulation circuit of the heat transfer fluid of two stamped plates 11 located vis-à-vis through the pads 117 and internal walls.
Les liaisons entre les plaques embouties 11 des deux demi-coques 10a, 10b sont étanches, de même que la liaison des plaques embouties 11 d'une même demi-coque 10a, 10b.  The connections between the stamped plates 11 of the two half-shells 10a, 10b are sealed, as well as the connection of the stamped plates 11 of the same half-shell 10a, 10b.
Chaque demi-coque 10a, 10b du dispositif 1 présente, dans cet exemple, quatre types distincts de plaques embouties 11 définissant trois rangées de plaques embouties 11, à savoir :  Each half-shell 10a, 10b of the device 1 has, in this example, four distinct types of stamped plates 11 defining three rows of stamped plates 11, namely:
des plaques de distribution lia du fluide caloporteur qui sont disposées le long des bords supérieur 102 et inférieur 103 du dispositif 1 de la figure 1 ;  distribution plates 11a of the heat transfer fluid which are arranged along the upper edges 102 and lower 103 of the device 1 of Figure 1;
des plaques d'extrémités 11b qui sont situées dans les deux coins opposés aux connecteurs d'entrée 21 et de sortie 22 du fluide caloporteur dans le dispositif 1 ;  end plates 11b which are located in the two corners opposite the inlet connectors 21 and 22 of the heat transfer fluid in the device 1;
des plaques intermédiaires 11c qui sont situées entre les plaques de distribution lia ou les plaques d'extrémités 11b disposées le long du bord supérieur 102 et les plaques de distribution lia ou les plaques d'extrémités 11b disposées le long du bord inférieur 103 du dispositif 1 ; et des plaques de retournement lld qui sont disposées entre la lumière centrale 101 et chacun des bords supérieur et inférieur du dispositif 1. intermediate plates 11c which are located between the distribution plates 11a or the end plates 11b arranged along the upper edge 102 and the distribution plates 11a or the end plates 11b disposed along the lower edge 103 of the device 1 ; and turning plates 11d which are arranged between the central lumen 101 and each of the upper and lower edges of the device 1.
Ces quatre types de plaques embouties 11 permettent d'obtenir un dispositif 1 de régulation thermique qui peut présenter une forme complexe et des dimensions relativement importantes.  These four types of stamped plates 11 make it possible to obtain a device 1 for thermal regulation which may have a complex shape and relatively large dimensions.
En effet, la mise en oeuvre de deux demi-coques 10a, 10b, chacune constituée de plaques embouties 11 de différents types, permet une grande modularité du dispositif 1 de sorte que ce dernier puisse être aisément adapté à de multiples configurations, plus ou moins complexes, d'un pack batterie.  Indeed, the implementation of two half-shells 10a, 10b, each consisting of stamped plates 11 of different types, allows a great modularity of the device 1 so that the latter can be easily adapted to multiple configurations, more or less complex, of a battery pack.
Ainsi, pour ce mode de réalisation, seulement quatre matrices pour presse à emboutir sont nécessaires pour fabriquer le dispositif 1 de régulation thermique.  Thus, for this embodiment, only four dies for stamping presses are required to manufacture the thermal control device 1.
On comprend bien évidemment que d'autres types de plaques embouties, présentant des formes et/ou des circuits de circulation de fluide différents, peuvent être mis en oeuvre selon la configuration du pack-batterie embarqué dans le véhicule automobile.  It is of course understood that other types of stamped plates, having different shapes and / or fluid circulation circuits, can be implemented according to the configuration of the battery pack embedded in the motor vehicle.
Dans tous les cas, l'invention permet de se libérer des contraintes relatives à la taille des presses fabricant les plaques embouties de grande taille puisque le dispositif de l'invention ne met plus en oeuvre une unique plaque emboutie de grande dimension mais une pluralité de plaques embouties dont les dimensions sont réduites et sensiblement identiques à celles d'une cellule électrique ou d’un groupe de cellules électriques.  In any case, the invention makes it possible to free itself from the constraints relating to the size of the presses that produce the large stamped plates since the device of the invention no longer implements a single stamped plate of large size but a plurality of stamped plates whose dimensions are reduced and substantially identical to those of an electric cell or a group of electric cells.
L'invention permet donc de réduire les coûts de fabrication des dispositifs de régulation thermique des cellules électriques, ou éléments de stockage d'énergie électrique.  The invention thus makes it possible to reduce the manufacturing costs of the thermal regulation devices of the electric cells, or elements for storing electrical energy.
Il permet, en outre, de fournir un dispositif de régulation thermique modulaire, aisément adaptable à toutes formes et dimensions de pack-batterie.  It also makes it possible to provide a modular thermal regulation device, easily adaptable to all shapes and sizes of battery pack.
La figure 2a illustre un premier type de plaque emboutie 11, prenant la forme d'une plaque de distribution lia de forme rectangulaire. Figure 2a illustrates a first type of stamped plate 11, taking the form of a distribution plate 11a of rectangular shape.
Cette plaque de distribution lia emboutie est disposée dans la rangée supérieure, dite première rangée, 300 ou dans la rangée inférieure, dite deuxième rangée, 400 placées en regard des bords supérieur et inférieur du dispositif 1 de la figure 1. This stamped distribution plate 11 is disposed in the upper row, said first row, 300 or in the lower row, said second row, 400 placed opposite the upper and lower edges of the device 1 of Figure 1.
Il est à noter que la structure générale de chacune des plaques de distribution lia du dispositif 1 est identique. Toutefois, les plaques de distribution lia de la deuxième rangée 400 sont inversées par rapport à celles de la première rangée 300.  It should be noted that the general structure of each of the distribution plates 11a of the device 1 is identical. However, the distribution plates 11a of the second row 400 are inverted with respect to those of the first row 300.
Ainsi, chaque plaque de distribution lia comprend un canal principal 110 et un canal de refroidissement 113. Ces derniers présentent plusieurs plots (appelées « dimples » en anglais) 117 définissant plusieurs passages de circulation du fluide caloporteur.  Thus, each distribution plate 11a comprises a main channel 110 and a cooling channel 113. The latter have several pads (called "dimples" in English) 117 defining a plurality of heat transfer fluid circulation passages.
Le canal principal 110, situé sur un bord de la plaque de distribution lia, est destiné à l'alimentation et à la distribution du fluide caloporteur dans la plaque de distribution lia selon le sens de la flèche Fl.  The main channel 110, located on an edge of the distribution plate 11a, is for the supply and distribution of the heat transfer fluid in the distribution plate 11a in the direction of the arrow Fl.
Le canal principal 110 présente une ouverture d’entrée 111 de fluide caloporteur et une ouverture de sortie 112 de fluide caloporteur qui sont coaxiales.  The main channel 110 has a heat transfer fluid inlet opening 111 and a heat transfer fluid outlet opening 112 which are coaxial.
L'ouverture d’entrée 111 forme ou est en communication fluidique avec le connecteur d’entrée 21 d'alimentation en fluide caloporteur du dispositif 1 dans le cas de la plaque emboutie 11 du circuit située en haut à gauche de la figure 4, sur la première rangée.  The inlet opening 111 forms or is in fluid communication with the heat transfer fluid supply inlet connector 21 of the device 1 in the case of the stamped plate 11 of the circuit located at the top left of FIG. the first row.
Pour les autres plaques embouties, l'ouverture d’entrée 111 communique avec l’ouverture de sortie 112 de la plaque emboutie 11 adjacente.  For the other stamped plates, the inlet opening 111 communicates with the outlet opening 112 of the pressed plate 11 adjacent.
L’ouverture de sortie 112 du canal principal 110 est reliée fluidiquement (ou est en communication fluidique) soit à l'ouverture d’entrée 111 de la plaque emboutie 11 adjacente, soit au connecteur de sortie 22 du fluide caloporteur du dispositif 1 pour la plaque emboutie 11 du circuit située en bas à gauche de la figure 4, en l'occurrence.  The outlet opening 112 of the main channel 110 is fluidly connected (or is in fluid communication) to either the inlet opening 111 of the pressed plate 11 adjacent, or to the outlet connector 22 of the heat transfer fluid of the device 1 for the stamped plate 11 of the circuit located at the bottom left of Figure 4, in this case.
Les canaux principaux 110 de chaque plaque de distribution lia définissent un conduit de distribution/alimentation du fluide caloporteur pour la rangée supérieure 300 du dispositif 1, et un conduit de collecte du fluide caloporteur pour la rangée inférieure 400 du dispositif 1.  The main channels 110 of each distribution plate 11a define a heat transfer fluid supply / supply duct for the upper row 300 of the device 1, and a heat transfer fluid collection duct for the lower row 400 of the device 1.
Le canal de refroidissement 113 permet la circulation du fluide caloporteur sur toute sa largeur, et entre les plots 117, de sorte à favoriser les échanges thermiques avec la ou les cellules électriques situées en vis-à-vis du dispositif 1. Plus précisément, une première extrémité du canal de refroidissement 113 est en communication fluidique avec le canal principal 110 tandis que la seconde extrémité du canal de refroidissement 113 présente une ouverture de distribution 114 qui permet de distribuer le fluide caloporteur (selon la flèche F2) vers une plaque emboutie 11 adjacente (une plaque de distribution lia ou une plaque d'extrémité 11b ou une plaque intermédiaire 11c dans le dispositif de la figure 4 décrit ci-après). The cooling channel 113 allows the circulation of the coolant throughout its width, and between the pads 117, so as to promote heat exchange with the or the electrical cells located vis-à-vis the device 1. Specifically, a first end of the cooling channel 113 is in fluid communication with the main channel 110 while the second end of the cooling channel 113 has a dispensing opening 114 which allows to distribute the coolant (according to the arrow F2) to an embossed plate 11 adjacent (a distribution plate 11a or an end plate 11b or an intermediate plate 11c in the device of Figure 4 described below).
On comprend bien évidemment que le sens de circulation F2 du fluide caloporteur dans les plaques de distribution lia de la rangée inférieure 400 sont inversées par rapport à celles de la rangée supérieure 300.  It is of course understood that the flow direction F2 of the heat transfer fluid in the distribution plates 11a of the lower row 400 are reversed relative to those of the upper row 300.
La figure 2b illustre un second type de plaque emboutie 11, prenant la forme d'une plaque d'extrémité 11b de forme rectangulaire. Figure 2b illustrates a second type of stamped plate 11, taking the form of a rectangular end plate 11b.
Dans le dispositif de la figure 4, deux plaques d'extrémité 11b embouties sont situées dans les angles opposés aux connecteurs d'entrée 21 et de sortie 22 du fluide caloporteur dans le dispositif 1.  In the device of FIG. 4, two stamped end plates 11b are situated in the opposite angles to the inlet and outlet connectors 22 of the heat transfer fluid in the device 1.
La plaque d'extrémité 11b comprend un canal principal 110 et un canal de refroidissement 113.  The end plate 11b comprises a main channel 110 and a cooling channel 113.
La plaque d'extrémité 11b se différencie de la plaque de distribution lia en ce qu'elle ne présente pas d'ouverture de sortie puisqu'elle est disposée dans un angle du dispositif 1.  The end plate 11b differs from the distribution plate 11a in that it has no outlet opening since it is disposed in an angle of the device 1.
En effet, le fluide caloporteur circule (selon la direction de la flèche F3) uniquement depuis l'ouverture d'entrée 111 à travers le canal de refroidissement 113 pour ressortir par l’ouverture de distribution 114 située au niveau de l'extrémité opposée à celle de l'ouverture d'entrée 111.  Indeed, the heat transfer fluid circulates (in the direction of the arrow F3) only from the inlet opening 111 through the cooling channel 113 to exit through the dispensing opening 114 located at the end opposite to that of the entrance opening 111.
On comprend bien évidemment que le fluide circule dans le sens opposé à F3 pour la plaque d'extrémité 11b du dispositif située dans la rangée inférieure 400 du dispositif 1 de la figure 4.  It is of course understood that the fluid flows in the opposite direction to F3 for the end plate 11b of the device located in the lower row 400 of the device 1 of FIG.
La figure 2c illustre un troisième type de plaque emboutie 11, prenant la forme d'une plaque intermédiaire 11c. De telles plaques intermédiaires 11c embouties sont situées dans la rangée intermédiaire 500 qui s'étend entre la rangée supérieure 300 et la rangée inférieure 400 du dispositif 1 de la figure 4. Figure 2c illustrates a third type of stamped plate 11, taking the form of an intermediate plate 11c. Such intermediate plates 11c stamped are located in the intermediate row 500 which extends between the upper row 300 and the lower row 400 of the device 1 of FIG. 4.
Contrairement aux plaques de distribution lia et d'extrémité 11b, les plaques intermédiaires 11c ne comprennent pas de canal principal 110.  Unlike the distribution plates 11a and end 11b, the intermediate plates 11c do not comprise a main channel 110.
En effet, les plaques intermédiaires 11c comprennent uniquement un canal de refroidissement 113 dont chacune des extrémités présente une ouverture de distribution 118 pour le passage du fluide caloporteur.  Indeed, the intermediate plates 11c comprise only a cooling channel 113, each end has a dispensing opening 118 for the passage of heat transfer fluid.
Ces ouvertures de distribution 118 sont reliées à une ouverture de distribution 114 ou 118 soit d'une autre plaque intermédiaire 11c, soit d'une plaque de distribution lia, soit d'une plaque d'extrémité 11b.  These dispensing openings 118 are connected to a dispensing opening 114 or 118 of either another intermediate plate 11c, a distribution plate 11a, or an end plate 11b.
Le fluide caloporteur traverse donc la plaque intermédiaire 11c d'une ouverture de distribution 118 à l'autre (selon la direction de la flèche F4).  The heat transfer fluid therefore passes through the intermediate plate 11c of a distribution opening 118 to the other (in the direction of the arrow F4).
La figure 2d illustre un quatrième type de plaque emboutie 11, prenant la forme d'une plaque de retournement lld. Figure 2d illustrates a fourth type of stamped plate 11, taking the form of a turning plate 11d.
De telles plaques de retournement lld embouties sont situées entre la lumière 101 centrale et chacun des bords supérieur et inférieur du dispositif 1 de la figure 4.  Such stamped turntables are located between the central lumen 101 and each of the upper and lower edges of the device 1 of FIG. 4.
Ces plaques sont dites de retournement dans la mesure où elles définissent un circuit de circulation en "U" en leur sein, le fluide caloporteur ne pouvant pas traverser le dispositif 1 de la rangée supérieure 300 jusqu'à la rangée inférieure 400 du fait de la présence de la lumière 101 centrale ménagée dans le dispositif 1.  These plates are called overturning insofar as they define a circulation circuit in "U" within them, the heat transfer fluid can not pass through the device 1 of the upper row 300 to the lower row 400 because of the presence of central light 101 formed in the device 1.
Pour ce faire, la plaque de retournement lld présente une paroi interne 119 qui définit le circuit de circulation en U.  To do this, the turning plate 11d has an inner wall 119 which defines the U-shaped circulation circuit.
Les plaques de retournements lld présentent un canal de refroidissement 113 comprenant une ouverture d'entrée 111 et une ouverture de sortie 112.  The turning plates 11d have a cooling channel 113 comprising an inlet opening 111 and an outlet opening 112.
Ainsi, le fluide caloporteur entre par l'ouverture d'entrée 111 puis parcourt le canal de refroidissement 113 en contournant la paroi interne 119 pour ressortir par l'ouverture de sortie 112 (selon le circuit illustré par la flèche F5). Comme indiqué précédemment, le dispositif 1 est constitué de deux demi- coques 10a, 10b symétriquement identiques, chacune constituée de plusieurs plaques embouties 11 juxtaposées dans un même plan. Thus, the heat transfer fluid enters through the inlet opening 111 and then runs through the cooling channel 113 bypassing the inner wall 119 to exit through the outlet opening 112 (according to the circuit illustrated by the arrow F5). As indicated above, the device 1 consists of two half-shells 10a, 10b symmetrically identical, each consisting of several stamped plates 11 juxtaposed in the same plane.
Les plaques embouties 11, quelles que soient leurs types, sont brasées entre elles pour former les demi-coques 10a, 10b.  The stamped plates 11, whatever their type, are brazed together to form the half-shells 10a, 10b.
Les demi-coques 10a 10b sont également solidarisées entre elles par brasage pour former le dispositif 1.  The half-shells 10a and 10b are also joined together by brazing to form the device 1.
Afin de garantir l'étanchéité du circuit de circulation du fluide caloporteur formé au sein du dispositif 1 après brasage, les plaques embouties 11 adjacentes d'une même demi-coque 10a, 10b peuvent se chevaucher partiellement.  In order to guarantee the sealing of the coolant circulation circuit formed within the device 1 after soldering, the stamped plates 11 adjacent to the same half-shell 10a, 10b may overlap partially.
La figure 3 illustre un tel chevauchement entre deux plaques embouties 11 adjacentes.  Figure 3 illustrates such overlap between two stamped plates 11 adjacent.
Pour ce faire, l’ouverture d’entrée 111 de chaque plaque emboutie 11 présente un élément mâle 115 de connexion à une plaque emboutie 11 adjacente.  To do this, the inlet opening 111 of each stamped plate 11 has a male element 115 for connection to an embossed plate 11 adjacent.
L’ouverture de sortie 112 de chaque plaque emboutie 11 présente, de façon correspondante, un élément femelle 116 de connexion apte à coopérer avec l'élément mâle 115 de connexion d'une plaque emboutie 11 adjacente.  The outlet opening 112 of each stamped plate 11 has, correspondingly, a female connector element 116 adapted to cooperate with the male element 115 for connecting an embossed plate 11 adjacent.
On comprend bien évidemment que les ouvertures de distributions 114, 118 des différentes plaques embouties 11 présentent des éléments 115, 116 de connexion équivalents permettant de raccorder les plaques embouties 11 entre elles par chevauchement.  It is of course understood that the distribution openings 114, 118 of the various stamped plates 11 have elements 115, 116 of equivalent connection for connecting the stamped plates 11 to each other by overlapping.
Ce chevauchement des plaques embouties 11 adjacentes permet, lors du brasage, de garantir l'étanchéité du circuit de circulation du fluide caloporteur au sein du dispositif 1.  This overlap of the adjacent stamped plates 11 makes it possible, during brazing, to guarantee the leaktightness of the coolant circulation circuit within the device 1.
En outre, un tel chevauchement entre les plaques embouties 11 adjacentes d'une même demi-coque 10a, 10b permet d'obtenir des demi-coques 10a, 10b présentant une surface inférieure (c'est-à-dire la surface de la demi-coque orientée vers l'autre demi-coque, ou la surface orientée vers l'intérieur du dispositif) plane, facilitant ensuite le brasage des demi-coques 10a, 10b entre elles.  In addition, such an overlap between the adjacent stamped plates 11 of the same half-shell 10a, 10b makes it possible to obtain half-shells 10a, 10b presenting a lower surface (ie the surface of the half-shell). -coque oriented towards the other half-shell, or the surface facing the inside of the device) flat, then facilitating the brazing of the half-shells 10a, 10b between them.
Cette technique permet de s'affranchir de la mise en oeuvre de conduits de raccordement additionnels et de joints d'étanchéité entre les plaques embouties, qui, de façon connue, augmentent les risques de fuite du fluide caloporteur. Cette technique selon laquelle les plaques embouties 11 sont brasées entre elles permet, en outre, de supprimer, ou tout le moins de limiter, le risque de fuite du fluide caloporteur hors du dispositif 1. This technique makes it possible to dispense with the use of additional connection ducts and seals between the stamped plates, which, in known manner, increase the risk of leakage of the coolant. This technique according to which the stamped plates 11 are brazed together makes it possible, in addition, to eliminate, or at least limit, the risk of leakage of the coolant out of the device 1.
Comme illustré sur les figures 2a à 4, les plaques embouties 11 présentent des plots, ou alvéoles, 117 en saillie (appelées « dimples » en anglais) qui s'étendent vers la plaque emboutie 11 située en vis-à-vis et qui sont en contact avec cette dernière, par exemple avec un plot de cette dernière disposé en vis-à-vis, après assemblage du dispositif 1. As illustrated in Figures 2a to 4, the stamped plates 11 have studs, or cells, protruding 117 (called "dimples" in English) which extend towards the stamped plate 11 located vis-à-vis and which are in contact with the latter, for example with a pad of the latter disposed vis-à-vis, after assembly of the device 1.
Ces plots 117 visent, d'une part, à améliorer la résistance mécanique du dispositif 1 à la pression du fluide caloporteur et, d'autre part, à favoriser la répartition du fluide caloporteur dans le circuit de circulation au sein du dispositif 1 (mais également au sein de chaque plaque emboutie 11, quelle que soit son type).  These pads 117 are intended, on the one hand, to improve the mechanical strength of the device 1 to the pressure of the coolant and, on the other hand, to promote the distribution of the heat transfer fluid in the circulation circuit within the device 1 (but also within each stamped plate 11, regardless of its type).
Le débit de fluide dans chaque plaque emboutie 11 est fonction du nombre (ou densité) et des dimensions des plots 117 mis en oeuvre.  The flow rate of fluid in each stamped plate 11 is a function of the number (or density) and the dimensions of the pads 117 used.
Les plots 117 situés dans le canal de refroidissement 113 des plaques embouties permettent de répartir le fluide dans la totalité de ce dernier de sorte à optimiser la surface d'échange thermique du dispositif 1 avec les cellules électriques.  The pads 117 located in the cooling channel 113 of the stamped plates allow to distribute the fluid throughout the latter so as to optimize the heat exchange surface of the device 1 with the electric cells.
La figure 4 illustre, en vue de dessus, un exemple de circuit de circulation global d'un dispositif 1 de régulation thermique selon l'invention. FIG. 4 illustrates, in plan view, an example of an overall circulation circuit of a thermal regulation device 1 according to the invention.
Bien que seule la demi-coque 10a soit visible sur la figure 4, on comprend aisément qu'une demi-coque 10b, symétriquement identique à la demi-coque supérieure 10a, est mise en oeuvre afin de former le dispositif 1 de régulation thermique.  Although only the half-shell 10a is visible in Figure 4, it is easily understood that a half-shell 10b, symmetrically identical to the upper half-shell 10a, is implemented to form the device 1 of thermal control.
Dans cet exemple, le circuit de circulation global du fluide caloporteur est un circuit en U, les connecteurs d'entrée 21 et de sortie 22 du fluide étant disposés sur un même bord latéral du dispositif 1.  In this example, the overall circulation circuit of the heat transfer fluid is a U-shaped circuit, the input and output connectors 22 of the fluid being arranged on the same side edge of the device 1.
Le dispositif 1 présente, comme sur la figure 1, une lumière centrale 101 pouvant recevoir un ou plusieurs équipements électroniques à refroidir.  The device 1 has, as in Figure 1, a central lumen 101 that can receive one or more electronic equipment to be cooled.
Le dispositif 1 comprend deux demi-coques 10a, 10b, comprenant chacune : - douze plaques de distribution lia réparties sur deux rangées supérieure et inférieure 300, 400 s'étendant respectivement le long des bords supérieur et inférieur du dispositif 1 de la figure 4 ; The device 1 comprises two half-shells 10a, 10b, each comprising: twelve distribution plates 11a distributed in two upper and lower rows 300, 400 respectively extending along the upper and lower edges of the device 1 of FIG. 4;
- deux plaques d'extrémités 11b situées dans les angles opposés aux connecteurs d'entrée 21 et de sortie 22 du fluide caloporteur du dispositif 1 ;  two end plates 11b situated in the opposite angles to the input and output connectors 22 of the heat transfer fluid of the device 1;
- quatre plaques de retournement lld situées entre la lumière centrale 101 et les bords supérieur et inférieur du dispositif 1 et ;  four turning plates 11d located between the central lumen 101 and the upper and lower edges of the device 1 and;
- sept plaques intermédiaires 11c s'étendant dans la rangée intermédiaire 500 située entre la rangée supérieure 300 et la rangée inférieure 400 du dispositif 1.  seven intermediate plates 11c extending in the intermediate row 500 situated between the upper row 300 and the lower row 400 of the device 1.
Ainsi, le fluide caloporteur entrant par le connecteur d'entrée 21 dans le dispositif 1 est distribué sur l'ensemble de la longueur du dispositif 1 (selon la flèche Fil) par le biais des canaux principaux 110 des plaques de distribution lia et d'extrémité 11b de la rangée supérieure 300.  Thus, the heat transfer fluid entering through the inlet connector 21 in the device 1 is distributed over the entire length of the device 1 (according to the arrow Fil) through the main channels 110 of the distribution plates 11a and 11a. end 11b of the upper row 300.
Le fluide circule ensuite dans les canaux de refroidissement 113 de l'ensemble des plaques embouties 11 du dispositif 1 vers la rangée inférieure 400, via la rangée intermédiaire 500 (selon les flèches F12).  The fluid then flows in the cooling channels 113 of all the stamped plates 11 of the device 1 to the lower row 400, via the intermediate row 500 (according to the arrows F12).
Il est ensuite dirigé vers le connecteur de sortie 22 par le biais des canaux principaux 110 des plaques de distribution lia et d'extrémité lld de la rangée inférieure 400 (selon la flèche F13).  It is then directed to the output connector 22 through the main channels 110 of the distribution plates 11a and end 11d of the lower row 400 (according to the arrow F13).
Les plaques de retournement lld ont un fonctionnement particulier puisqu'elles présentent un circuit interne en "U" qui permet de faire circuler le fluide caloporteur (selon la flèche F5) depuis l'ouverture d’entrée 111 vers l’ouverture de sortie 112 via le canal de refroidissement 113 (comme illustré sur la figure 2d).  The turning plates 11d have a particular function since they have an internal "U" circuit which makes it possible to circulate the coolant (according to the arrow F5) from the inlet opening 111 to the outlet opening 112 via the cooling channel 113 (as illustrated in Figure 2d).
Cette circulation particulière au sein des plaques de retournement lld est imposée par la configuration du dispositif 1 présentant une lumière centrale 101.  This particular circulation within the turning plates 11d is imposed by the configuration of the device 1 having a central lumen 101.
Un exemple de dispositif 1 ne présentant pas une telle lumière centrale 101 est décrit plus en détail dans la suite de la description (cf. figure 9, par exemple).  An example of device 1 not having such a central lumen 101 is described in more detail later in the description (see Figure 9, for example).
La figure 5 détaille la température moyenne du fluide caloporteur circulant au sein du dispositif 1 selon le circuit de circulation du fluide caloporteur décrit sur la figure 4, dans chacune des zones définies par les plaques embouties 11. La différence de température entre la température minimale (ici en entrée du dispositif 1) qui est de 25°C et la température maximale (ici dans la plaque de retournement située dans la rangée inférieure) qui de 28,9°C est donc relativement faible. FIG. 5 details the average temperature of the coolant circulating in the device 1 according to the heat transfer fluid circulation circuit described in FIG. 4, in each of the zones defined by the stamped plates 11. The temperature difference between the minimum temperature (here at the input of the device 1) which is 25 ° C and the maximum temperature (here in the turntable located in the lower row) which 28.9 ° C is relatively low .
Ceci démontre que le dispositif 1 de régulation thermique conforme à l'invention est performant en ce sens qu'il permet une régulation thermique quasi- homogène des cellules électriques de la batterie.  This demonstrates that the device 1 for thermal regulation according to the invention is efficient in that it allows a quasi-homogeneous thermal regulation of the battery cells.
Les figures 6 à 11 illustrent schématiquement différents exemples de circuits de circulation du fluide caloporteur pouvant être mis en oeuvre dans un dispositif de régulation thermique conforme à l'invention. FIGS. 6 to 11 diagrammatically illustrate different examples of circulation circuits of the heat transfer fluid that can be implemented in a thermal regulation device according to the invention.
Ici encore, seule la demi-coque 10a est visible.  Here again, only the half-shell 10a is visible.
On comprend bien évidemment que le dispositif 1 de régulation comprend une autre demi-coque 10b, symétriquement identique à la demi-coque 10a.  It is of course understood that the regulating device 1 comprises another half-shell 10b, symmetrically identical to the half-shell 10a.
La figure 6 montre un exemple d'un dispositif 1 de régulation thermique présentant un circuit de circulation en U dans lequel le fluide caloporteur parcourt l’espace intérieur délimité par les demi-coques 10a et 10b, ces dernières comprenant chacune deux rangées supérieure et inférieure 300, 400 de cinq plaques embouties 11.  FIG. 6 shows an example of a thermal regulation device 1 having a U-shaped circulation circuit in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising two upper and lower rows. 300, 400 of five stamped plates 11.
Ici encore, seule la demi-coque 10a est visible.  Here again, only the half-shell 10a is visible.
Plus précisément, chaque rangée comprend quatre plaques de distribution lia et une plaque d'extrémité 11b.  More specifically, each row comprises four distribution plates 11a and an end plate 11b.
Les connecteurs d'entrée 21 et de sortie 22 du fluide caloporteur dans le dispositif 1 se font sur un même bord latéral (à gauche en l’occurrence).  The input connectors 21 and 22 of the heat transfer fluid in the device 1 are on the same side edge (left in this case).
De façon similaire au dispositif 1 de la figure 4, le fluide caloporteur entre par le connecteur d'entrée 21 dans le dispositif 1 et est distribué sur l'ensemble de la longueur du dispositif 1 (selon la flèche Fil) par le biais des canaux principaux 110 des plaques de distribution lia et d'extrémité 11b de la rangée supérieure 300.  Similarly to the device 1 of FIG. 4, the heat transfer fluid enters through the input connector 21 in the device 1 and is distributed over the entire length of the device 1 (according to the arrow Fil) through the channels main 110 distribution plates 11a and end 11b of the upper row 300.
Le fluide circule ensuite dans les canaux de refroidissement 113 de l'ensemble des plaques embouties 11 du dispositif 1 vers la rangée inférieure 400 (selon les flèches F12), puis est dirigé vers le connecteur de sortie 22 par le biais des canaux principaux 110 des plaques de distribution lia et d'extrémité lld de la rangée inférieure 400 (selon la flèche F13). La figure 7 illustre un exemple d'un dispositif 1 de régulation thermique présentant un circuit de circulation en "1" dans lequel le fluide caloporteur parcourt l’espace intérieur délimité par les demi-coques 10a et 10b, ces dernières comprenant chacune deux rangées de cinq plaques embouties 11. The fluid then flows in the cooling channels 113 of all the stamped plates 11 of the device 1 to the lower row 400 (according to the arrows F12), then is directed towards the outlet connector 22 through the main channels 110 of the distribution plates 11a and end 11d of the lower row 400 (according to the arrow F13). FIG. 7 illustrates an example of a thermal regulation device 1 having a circulation circuit in "1" in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising two rows of five stamped plates 11.
Ici encore, seule la demi-coque 10a est visible.  Here again, only the half-shell 10a is visible.
Plus précisément, chaque rangée comprend quatre plaques de distribution lia et une plaque d'extrémité 11b.  More specifically, each row comprises four distribution plates 11a and an end plate 11b.
Le fonctionnement de ce dispositif 1 est sensiblement identique à ceux précédemment décrits si ce n'est que le connecteur de sortie 22 du fluide caloporteur est située sur un bord latéral opposé au connecteur d'entrée 21.  The operation of this device 1 is substantially identical to those previously described except that the outlet connector 22 of the coolant is located on a side edge opposite the input connector 21.
La figure 8 illustre un exemple d'un dispositif 1 de régulation thermique présentant un circuit de circulation en "U" dans lequel le fluide caloporteur parcourt l’espace intérieur délimité par les demi-coques 10a et 10b, ces dernières comprenant chacune deux rangées de dix plaques embouties 11.  FIG. 8 illustrates an example of a thermal regulation device 1 having a "U" circulation circuit in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising two rows of ten stamped plates 11.
Ici encore, seule la demi-coque 10a est visible.  Here again, only the half-shell 10a is visible.
La circulation du fluide caloporteur au sein de ce dispositif est identique à celle du dispositif de la figure 6, le nombre de plaques emboutis 11 par rangée étant ici doublé.  The circulation of the heat transfer fluid within this device is identical to that of the device of FIG. 6, the number of stamped plates 11 per row being here doubled.
La figure 9 illustre un exemple d'un dispositif 1 de régulation thermique présentant un circuit de circulation en "U" dans lequel le fluide caloporteur parcourt l’espace intérieur délimité par les demi-coques 10a et 10b, ces dernières comprenant chacune trois rangées de dix plaques embouties 11.  FIG. 9 illustrates an example of a thermal regulation device 1 having a "U" circulation circuit in which the coolant flows through the interior space delimited by the half-shells 10a and 10b, the latter each comprising three rows of ten stamped plates 11.
Ici encore, seule la demi-coque 10a est visible.  Here again, only the half-shell 10a is visible.
La circulation du fluide caloporteur au sein de ce dispositif est identique à celle du dispositif de la figure 8. On constate toutefois qu’une rangée 500 de plaques intermédiaires 11c est intercalée entre les rangées de plaques embouties 11 supérieure 300 et inférieure 400.  The circulation of the heat transfer fluid within this device is identical to that of the device of FIG. 8. However, it can be seen that a row 500 of intermediate plates 11c is interposed between the rows of stamped plates 11 upper 300 and lower 400.
Le fonctionnement de ce dispositif 1 se rapproche de celui décrit en relation avec la figure 4 si ce n'est que ce dispositif 1 ne présente pas de lumière centrale destinée à recevoir des équipements électroniques à réguler thermiquement.  The operation of this device 1 is similar to that described with reference to FIG. 4 except that this device 1 does not have a central lumen intended to receive electronic equipment to be thermally regulated.
La figure 10 illustre une variante du dispositif de régulation thermique de la figure 4 dans laquelle le circuit de circulation global est un circuit en "U" et les paires de plaques numérotées 7, 9 et 8, 10 sont configurées de sorte à définir une circulation en "U" en parallèle des conduits de distribution et de collecte du dispositif 1. FIG. 10 illustrates a variant of the thermal regulation device of FIG. 4 in which the global circulation circuit is a "U" circuit and the pairs of numbered plates 7, 9 and 8, 10 are configured to define a "U" circulation in parallel with the distribution and collection ducts of the device 1.
Ce type de plaque n'a pas été décrit en détail auparavant mais on comprendra aisément sa structure.  This type of plate has not been described in detail before but it will easily understand its structure.
La figure 11 illustre schématiquement le circuit de circulation du fluide caloporteur au sein du dispositif 1 de régulation thermique précédemment décrit en relation avec la figure 4.  FIG. 11 diagrammatically illustrates the circuit for circulating the coolant inside the thermal control device 1 previously described in relation with FIG. 4.
Ces différentes variantes sont données à titre de simples exemples illustratifs et non limitatifs.  These different variants are given as simple illustrative and non-limiting examples.
On comprend aisément que le nombre de plaques embouties 11, leur type et leur disposition (nombre de rangées et de colonnes) peut varier sans s'écarter du principe général de l'invention.  It is easily understood that the number of stamped plates 11, their type and their arrangement (number of rows and columns) can vary without departing from the general principle of the invention.
Le dispositif 1 de régulation thermique de l’invention consiste ainsi en un assemblage de deux demi-coques 10a, 10b constituées chacune de plaques embouties 11 de différents types, dont la forme et les dimensions sont adaptées à celles du pack- batterie.  The thermal control device 1 of the invention thus consists of an assembly of two half-shells 10a, 10b each consisting of stamped plates 11 of different types, whose shape and dimensions are adapted to those of the battery-pack.
Afin de faciliter les opérations de brasage, il est prévu que toutes les plaques embouties 11 soient cladées.  In order to facilitate the brazing operations, it is expected that all the stamped plates 11 are claded.
Dans une variante, seule les plaques embouties 11 de l'une des demi-coques 10a, 10b sont cladées.  In a variant, only the stamped plates 11 of one of the half-shells 10a, 10b are clad.
Dans ce cas de figure, la solidarisation entre elles et sur la première demi-coque des plaques embouties 11 de la deuxième demi-coque est mis en oeuvre par un apport de matière extérieur, au moyen d'un feuillard de clade, par exemple.  In this case, the joining between them and on the first half-shell of the stamped plates 11 of the second half-shell is implemented by a contribution of external material, by means of a clade strip, for example.
Dans un mode de réalisation particulier, aucune des plaques n'est cladée.  In a particular embodiment, none of the plates are clad.
La solidarisation des plaques entre elles est alors réalisée par un procédé de collage.  The joining of the plates together is then performed by a bonding process.
Le procédé de collage n'est pas limité au type de colle (époxy, silicone, polyuréthane, mono/bi composants), ni à un procédé de durcissement (appelé "curing" en anglais) à température ambiante ou à une température prédéterminée.  The bonding process is not limited to the type of glue (epoxy, silicone, polyurethane, mono / bi-components), nor to a curing process (called "curing" in English) at room temperature or at a predetermined temperature.
Les connecteurs d'entrée 21 et de sortie 22 du fluide caloporteur dans le dispositif 1 sont, de préférence non cladés afin de garantir un état de surface optimal au niveau de la connectique. Dans une variante, ces connecteurs sont cladés et une reprise en usinage peut être effectuée afin de garantir un état de surface optimal. The inlet 21 and outlet 22 of the heat transfer fluid in the device 1 are preferably uncladed in order to guarantee an optimal surface condition at the connector. In a variant, these connectors are clad and a resumption in machining can be performed to ensure an optimal surface condition.
L'emplacement des connecteurs d'entrée 21 et de sortie 22 du fluide caloporteur dans le dispositif 1 n'est pas limité aux exemples décrits précédemment.  The location of the input connectors 21 and 22 of the heat transfer fluid in the device 1 is not limited to the examples described above.
Les connecteurs 21, 22 peuvent, sans limitation, se trouver :  The connectors 21, 22 may, without limitation, be:
dans le plan de joint entre les deux demi-coques 10a, 10b ; perpendiculairement aux plaques embouties 11 ;  in the joint plane between the two half-shells 10a, 10b; perpendicular to the stamped plates 11;
selon un angle quelconque aux plaques embouties.  at any angle to the stamped plates.
Les dimensions des plaques embouties sont de préférence équivalentes aux dimensions des cellules électriques de sorte que la température de chaque cellule électrique est régulée par une seule plaque emboutie.  The dimensions of the stamped plates are preferably equivalent to the dimensions of the electric cells so that the temperature of each electric cell is regulated by a single stamped plate.
A titre d’exemple, les cellules électriques présentent généralement une taille de 350mm de long sur 150mm de large.  For example, the electric cells generally have a size of 350mm long and 150mm wide.
Dans une variante, les dimensions des plaques embouties sont égales aux dimensions d'un groupement de cellules électriques.  In a variant, the dimensions of the stamped plates are equal to the dimensions of a group of electric cells.
Les plaques embouties sont, en outre, adaptées :  The stamped plates are further adapted:
aux contraintes de régulation thermique des cellules électriques (densité de plots, dimensions des conduits de circulation du fluide caloporteur, ....) ;  the thermal regulation constraints of the electric cells (density of studs, dimensions of the circulation ducts of the coolant, ....);
aux contraintes mécaniques (épaisseur de matière, densités de conduits internes et de plots pour répondre aux spécifications d'éclatement et de pression cyclée).  mechanical stresses (material thickness, internal duct densities and studs to meet burst and cycled pressure specifications).
Afin de distribuer de manière optimale le fluide caloporteur dans l'ensemble des plaques embouties du dispositif de régulation thermique de l’invention, il est possible, en compléments des plots 117, d’adapter les sections des ouvertures d'entrée et de sortie du fluide caloporteur des plaques embouties.  In order to optimally distribute the heat transfer fluid in all of the stamped plates of the thermal control device of the invention, it is possible, in addition to the pads 117, to adapt the sections of the inlet and outlet openings of the heat transfer fluid of the stamped plates.
Le dispositif de régulation thermique de l'invention permet de refroidir et, le cas échéant, de réchauffer les cellules électriques.  The thermal control device of the invention makes it possible to cool and, where appropriate, to heat the electric cells.
Comme indiqué dans l'ensemble de la description ci-dessus, le dispositif 1 de régulation thermique de l'invention comprend deux demi-coques, symétriquement identiques, comprenant chacune une pluralité de plaques embouties juxtaposées dans un même plan. Il est à noter que l'on peut également considérer que le dispositif de régulation thermique conforme à l'invention est obtenu par assemblage d'une pluralité de coques, chaque coque étant constituée d'une paire de plaques embouties. As indicated throughout the description above, the thermal control device 1 of the invention comprises two half-shells, symmetrically identical, each comprising a plurality of stamped plates juxtaposed in the same plane. It should be noted that it can also be considered that the thermal control device according to the invention is obtained by assembling a plurality of shells, each shell consisting of a pair of stamped plates.
Dans ce cas de figure, les coques comprennent chacune deux plaques embouties, symétriquement identiques, solidarisées en vis-à-vis.  In this case, the shells each comprise two stamped plates, symmetrically identical, secured vis-a-vis.
Les coques (c'est-à-dire les paires de plaques embouties) sont ensuite solidarisées entre elles dans un même plan afin d'obtenir un dispositif 1 de régulation thermique de forme et de dimensions souhaitées.  The shells (that is to say the pairs of stamped plates) are then secured to each other in the same plane to obtain a thermal regulation device 1 of shape and desired dimensions.

Claims

REVENDICATIONS
1. Dispositif de régulation thermique (1), notamment de refroidissement, d'au moins un élément de stockage d'énergie électrique, 1. Device for thermal regulation (1), in particular for cooling, of at least one element for storing electrical energy,
caractérisé en ce qu'il comprend deux demi-coques (10a, 10b) assemblées l’une à l’autre, les demi-coques (10a, 10b) comprenant chacune au moins deux plaques embouties (11) juxtaposées dans un même plan et assemblées l’une à l’autre, lesdites demi-coques (10a, 10b) délimitant un circuit de circulation d'un fluide caloporteur au sein du dispositif de régulation thermique (1), au moins une desdites demi-coques (10a, 10b) étant destinée à venir en contact thermique avec ledit au moins un élément de stockage d'énergie électrique. characterized in that it comprises two half-shells (10a, 10b) assembled to one another, the half-shells (10a, 10b) each comprising at least two stamped plates (11) juxtaposed in the same plane and assembled to each other, said half-shells (10a, 10b) delimiting a circulation circuit of a coolant within the thermal control device (1), at least one of said half-shells (10a, 10b) ) being intended to come into thermal contact with said at least one electrical energy storage element.
2. Dispositif de régulation thermique (1) selon la revendication 1, caractérisé en ce que les surfaces extérieures des demi-coques (10a, 10b) et les surfaces périphériques (100a, 100b) bordant lesdites surfaces extérieures sont sensiblement planes. 2. Thermal control device (1) according to claim 1, characterized in that the outer surfaces of the half-shells (10a, 10b) and the peripheral surfaces (100a, 100b) bordering said outer surfaces are substantially planar.
3. Dispositif de régulation thermique (1) selon la revendication 1 ou 2, caractérisé en ce que lesdites au moins deux plaques embouties (11) juxtaposées d'au moins une desdites demi-coques (10a, 10b) sont solidarisées par brasage. 3. Thermal control device (1) according to claim 1 or 2, characterized in that said at least two stamped plates (11) juxtaposed with at least one of said half-shells (10a, 10b) are secured by brazing.
4. Dispositif de régulation thermique (1) selon l'une des revendications 1 à 3, caractérisé en ce que lesdites au moins deux plaques embouties (11) juxtaposées d'au moins une desdites demi-coques (10a, 10b) se chevauchent partiellement. 4. Thermal control device (1) according to one of claims 1 to 3, characterized in that said at least two stamped plates (11) juxtaposed with at least one of said half-shells (10a, 10b) partially overlap .
5. Dispositif de régulation thermique (1) selon l'une des revendications 1 à 4, caractérisé en ce que lesdites demi-coques (10a, 10b) sont solidarisées entre elles par brasage. 5. Thermal control device (1) according to one of claims 1 to 4, characterized in that said half-shells (10a, 10b) are joined together by brazing.
6. Dispositif de régulation thermique (1) selon l'une des revendications 1 à 5, caractérisé en ce que chacune desdites demi-coques (10a, 10b) comprend une première rangée (300) de plaques embouties (11) assurant l’alimentation et la distribution du fluide dans le dispositif (1) et une deuxième rangée (400) de plaques embouties (11) assurant la collecte et l'évacuation du fluide hors du dispositif (1), et optionnellement au moins une rangée intermédiaire (500) de plaques embouties (11). 6. Thermal control device (1) according to one of claims 1 to 5, characterized in that each of said half-shells (10a, 10b) comprises a first row (300) of stamped plates (11) providing power and the distribution of the fluid in the device (1) and a second row (400) of stamped plates (11) ensuring the collection and evacuation of the fluid from the device (1), and optionally at least one intermediate row (500) of stamped plates (11).
7. Dispositif de régulation thermique (1) selon la revendication 6, caractérisé en ce que chacune des première (300) et deuxième (400) rangées comprend au moins deux types de plaques embouties (11), à savoir : 7. Thermal control device (1) according to claim 6, characterized in that each of the first (300) and second (400) rows comprises at least two types of stamped plates (11), namely:
au moins une plaque de distribution (lia) communiquant fluidiquement d'une part avec une ou deux plaques embouties (11) adjacentes de ladite première rangée (300) et d'autre part avec une plaque de distribution (lia) de la deuxième rangée (400) ou une plaque intermédiaire (11c) d'une rangée intermédiaire (500) ;  at least one distribution plate (11a) fluidly communicating on the one hand with one or two adjacent stamped plates (11) of said first row (300) and on the other hand with a distribution plate (11a) of the second row ( 400) or an intermediate plate (11c) of an intermediate row (500);
une plaque d'extrémité (11b) communiquant fluidiquement d'une part avec une plaque emboutie (11) adjacente de ladite rangée (300, 400) et d'autre part avec une plaque de distribution (lia) ou d'extrémité (11b) de l'autre rangée parmi les première et deuxième rangées (300, 400) ou une plaque intermédiaire (11c) d'une rangée intermédiaire (500).  an end plate (11b) fluidly communicating on the one hand with an adjacent stamped plate (11) of said row (300, 400) and on the other hand with a distribution plate (11a) or end plate (11b) the other row among the first and second rows (300, 400) or an intermediate plate (11c) of an intermediate row (500).
8. Dispositif de régulation thermique (1) selon la revendication 7, caractérisé en ce que ladite plaque intermédiaire (11c) est configurée pour permettre le passage du fluide entre deux rangées de plaques embouties (11). 8. thermal control device (1) according to claim 7, characterized in that said intermediate plate (11c) is configured to allow the passage of fluid between two rows of stamped plates (11).
9. Dispositif de régulation thermique (1) selon l'une des revendications 6 à 8, caractérisé en ce qu'au moins une desdites rangées (300, 400, 500) comprend au moins une plaque de retournement (lld) destinée à former une circulation du fluide en "U" au sein de ladite au moins une rangée (300, 400, 500). 9. Thermal control device (1) according to one of claims 6 to 8, characterized in that at least one of said rows (300, 400, 500) comprises at least one turntable plate (lld) intended to form a fluid circulation at "U" within said at least one row (300, 400, 500).
10. Dispositif de régulation thermique (1) selon l'une des revendications 1 à 9, caractérisé en ce que lesdites plaques embouties (11) présentent des plots (117) de répartition du fluide caloporteur. 10. Thermal control device (1) according to one of claims 1 to 9, characterized in that said stamped plates (11) have pads (117) for distribution of the heat transfer fluid.
PCT/FR2019/051337 2018-06-07 2019-06-05 Device for controlling the temperature of electrical energy storage cells of a large-area battery pack WO2019234351A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1854939A FR3082296B1 (en) 2018-06-07 2018-06-07 DEVICE FOR THERMAL REGULATION OF ELECTRIC ENERGY STORAGE CELLS OF A LARGE AREA BATTERY PACK
FR1854939 2018-06-07

Publications (1)

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PCT/FR2019/051337 WO2019234351A1 (en) 2018-06-07 2019-06-05 Device for controlling the temperature of electrical energy storage cells of a large-area battery pack

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3111974A1 (en) * 2020-06-30 2021-12-31 Valeo Systemes Thermiques Thermal regulation device for cooling electrical energy storage devices.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3022994A1 (en) * 2014-06-25 2016-01-01 Valeo Systemes Thermiques HEAT EXCHANGER AND METHOD OF MANUFACTURING THE HEAT EXCHANGER
EP2993435A1 (en) * 2014-08-11 2016-03-09 Valeo Systemes Thermiques Heat exchange plate for thermal management of a battery pack
WO2016109881A1 (en) * 2015-01-09 2016-07-14 Dana Canada Corporation Counter-flow heat exchanger for battery thermal management applications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3022994A1 (en) * 2014-06-25 2016-01-01 Valeo Systemes Thermiques HEAT EXCHANGER AND METHOD OF MANUFACTURING THE HEAT EXCHANGER
EP2993435A1 (en) * 2014-08-11 2016-03-09 Valeo Systemes Thermiques Heat exchange plate for thermal management of a battery pack
WO2016109881A1 (en) * 2015-01-09 2016-07-14 Dana Canada Corporation Counter-flow heat exchanger for battery thermal management applications

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3111974A1 (en) * 2020-06-30 2021-12-31 Valeo Systemes Thermiques Thermal regulation device for cooling electrical energy storage devices.

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FR3082296A1 (en) 2019-12-13
FR3082296B1 (en) 2020-05-15

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