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WO2024160500A1 - Thermal regulation device for components - Google Patents

Thermal regulation device for components Download PDF

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Publication number
WO2024160500A1
WO2024160500A1 PCT/EP2024/050538 EP2024050538W WO2024160500A1 WO 2024160500 A1 WO2024160500 A1 WO 2024160500A1 EP 2024050538 W EP2024050538 W EP 2024050538W WO 2024160500 A1 WO2024160500 A1 WO 2024160500A1
Authority
WO
WIPO (PCT)
Prior art keywords
separator
components
dielectric fluid
stages
housing
Prior art date
Application number
PCT/EP2024/050538
Other languages
French (fr)
Inventor
Julien Tissot
Kamel Azzouz
Moussa Nacer Bey
Julio GUERRA
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2024160500A1 publication Critical patent/WO2024160500A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H01M10/6565—Gases with forced flow, e.g. by blowers with recirculation or U-turn in the flow path, i.e. back and forth
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1615—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
    • F28D7/1623—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/226—Transversal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Definitions

  • the invention relates to a thermal regulation device for components whose operation is sensitive to temperature, these components being intended in particular for energy storage and which may be battery cells, in particular for vehicles.
  • the invention also relates to a module comprising such a thermal regulation device and said components placed in the thermal regulation device.
  • the invention further relates to a method of assembling such a module.
  • an electrochemical component is a battery cell.
  • Battery cells can be positioned in a battery pack, or a battery module.
  • thermal regulation devices are generally traversed by a heat transfer fluid, in particular a dielectric fluid, namely an electrically inert fluid, which can, depending on the needs, either absorb the heat emitted by each battery pack in order to cool it, or provide heat, if the temperature of the battery pack is insufficient for its proper functioning.
  • a heat transfer fluid in particular a dielectric fluid, namely an electrically inert fluid, which can, depending on the needs, either absorb the heat emitted by each battery pack in order to cool it, or provide heat, if the temperature of the battery pack is insufficient for its proper functioning.
  • the invention aims to meet this need.
  • the subject of the present invention is thus a thermal regulation device for the cooling and/or heating of components whose operation is sensitive to temperature, these components being intended in particular for energy storage and which may be storage cells. battery, said device comprising:
  • this channel comprising at least one dielectric fluid inlet and at least one dielectric fluid outlet
  • a separator arranged to receive the components so that these components extend on either side of the separator, this separator being configured to create at least two stages of flow of dielectric fluid, the separator being arranged so that the dielectric fluid entering through the inlet first travels through one of the stages which defines a section of said channel, then the other of the stages which defines another section of said channel downstream of the previous section, and the separator has a free edge so as to provide a fluid passage, in particular U-shaped, between the two stages.
  • the different stages are located at different heights when the thermal regulation device is mounted on the vehicle.
  • the floors are thus in different vertical positions.
  • the dielectric fluid can make two or more passes in contact with each of the components to be cooled, which makes it possible to increase the heat exchanges between the components and the dielectric fluid.
  • the invention thus makes it possible to better cool or heat the components.
  • the stage which communicates with the dielectric fluid inlet is a high stage, namely the highest stage among all the stages.
  • the stage which communicates with the dielectric fluid outlet is a low stage, namely the lowest stage among all the stages.
  • the device comprises a pump configured to force the flow of dielectric fluid.
  • the stage which communicates with the dielectric fluid inlet is a low stage, namely the lowest stage among all the stages.
  • the stage which communicates with the dielectric fluid outlet is a high stage, namely the highest stage among all the stages.
  • a pump is provided to force the flow of dielectric fluid from bottom to top.
  • the thermal regulation device comprises at least two separators, for example two or three separators, configured to provide at least three stages of dielectric fluid flow, and each separator comprises a free edge so as to provide a U-shaped fluid passage between two consecutive stages.
  • the two consecutive separators are arranged alternately on the dielectric fluid flow channel.
  • the separator comprises openings each configured to receive a component.
  • the component protrudes on either side of the divider.
  • each opening has a circular outline.
  • the openings are arranged in rows, in particular parallel rows.
  • the separator has a generally planar shape.
  • the separator has a plate shape.
  • the separator is configured so that it can be placed approximately halfway up the component.
  • the separator comprises, for each opening, a seal for each component, this seal being configured to apply to the component to seal the opening.
  • the seals on the separator help prevent leakage of dielectric fluid through the separator, through the openings.
  • the separator has a multi-layer structure with two outer layers and an inner layer forming a seal.
  • At least one of the external layers may comprise at least one polymer material.
  • the polymer material is a polyamide such as PA6 or PA66.
  • the internal layer may comprise at least one polymer material.
  • the polymer material is in particular an elastomer such as FKM.
  • the separator comprises a single rigid layer and at least one seal.
  • the separator comprises a single rigid layer.
  • the internal layer is configured to apply against the component placed in the opening to ensure sealing.
  • the separator has a multilayer structure with two external layers and an internal layer forming a seal, the internal layer being configured to apply against the component placed in place into the opening to ensure a tight seal.
  • the separator comprises one or more dielectric fluid circulation orifices configured to allow the dielectric fluid to circulate through the separator.
  • the dielectric fluid circulation orifice(s) are placed close to, in particular between, openings receiving the components.
  • the separator comprises a number of openings for the components, a number which is at least equal to half of the total number of components to be placed in the thermal regulation device.
  • the housing defines with a bottom support the compartment configured to receive the components, the housing comprising a side wall and a cover connecting to the side wall.
  • the side wall has an annular shape, namely that it follows a closed perimeter, for example this perimeter being geometrically inscribed in a rectangle.
  • the compartment is delimited between two opposite faces of the side wall of the housing, in particular two opposite vertical faces belonging to the side wall of the housing, and one of the separators being contiguous with one of these faces and the other of the separators being contiguous with the other of these faces.
  • the number of openings can be greater than 60% or 70% of the total number of components to be placed in the compartment. This number is preferably less than 80% or 90% of the total number of components.
  • the side wall and the cover are made in one piece, for example in plastic material.
  • the side wall is part of a rectangular perimeter.
  • the side wall comprises a region for fixing the separator on the side wall.
  • This fixing region is in the form of a strip into which a border of the separator is embedded.
  • the separator is for example secured to the side wall of the housing during overmolding of material on the separator in order to form the side wall.
  • the separator can be in contact with the side wall without being secured to it.
  • the separator may include flow disruptors. These disruptors are for example of the “dimples” type in English.
  • the housing comprises a dielectric fluid supply conduit communicating with the inlet of the dielectric fluid flow channel and a dielectric fluid discharge conduit communicating with the outlet of the dielectric fluid flow channel.
  • the conduits are made in one piece with the rest of the housing.
  • conduits for supplying and discharging dielectric fluid are arranged in parallel, in particular one above the other.
  • conduits for supplying and discharging dielectric fluid are arranged on one face of the side wall.
  • the dielectric fluid supply and discharge conduits are open on the same side.
  • the cover comprises, on its main external face, reinforcing reliefs, in particular in the form of boxes.
  • the cover comprises, on its main internal face facing the compartment, holding reliefs configured to hold the components placed in the compartment.
  • these holding reliefs include pins, in particular made in one piece with the cover.
  • pins are arranged along circular lines so as to be able to surround the top of the components, in particular battery cells.
  • the components are battery cells of cylindrical or prismatic shape.
  • the side wall has a shape matching the perimeter of the components to be placed in the compartment.
  • the side wall comprises rounded undulations.
  • the bottom support is configured to hold the components to be placed in the compartment.
  • the bottom support comprises housings for each housing a component.
  • each housing has a circular shape.
  • the housings are formed by openings on a main wall of the bottom support.
  • each housing comprises a shoulder, in particular of annular shape, configured to serve as a stop for the component to be placed in this housing.
  • This stop is preferably sealed against the dielectric fluid.
  • each housing receives a seal configured to apply to the component which is to be placed in this housing.
  • each component is inserted through the housing then, at the end of the insertion stroke, the component abuts against this shoulder so that this component cannot pass through the housing beyond a required position.
  • each housing is provided with one or more slots on its periphery to allow dielectric fluid to pass through.
  • the bottom support comprises a side wall connecting to the main wall which defines the housings.
  • the bottom support is closed in a sealed manner by a bottom plate which is applied against the side wall of the bottom support.
  • one or more conductive bars are placed in the space between the bottom plate and the bottom support.
  • This space between the bottom plate and the bottom support is preferably sealed against the dielectric fluid which is prevented from passing through the main wall of the bottom support.
  • these conductive bars also called “Busbars” in English, are used for the electrical connection of the battery cells.
  • the bottom plate has reliefs, for example in the form of pins, configured to apply the conductive bar(s) against the components.
  • the components come to rest on these conductive bars, once these components are mounted on the thermal regulation device.
  • the device comprises an electrical connector configured to connect the set of conductive bars in contact with the components.
  • the invention also relates to a module comprising at least one thermal regulation device according to the invention, and components, in particular battery cells, placed in the thermal regulation device.
  • the component comprises an enlarged base configured to abut against the shoulder of the housing which receives this component.
  • the invention also relates to a method of assembling a module according to the invention, comprising the step of inserting the components into the housings, in particular openings, a bottom support of the thermal regulation device.
  • the components in particular the battery cells, are immersed in the dielectric fluid, at least over a certain height.
  • FIG. 8 shows a cross-sectional view of the device according to a variant embodiment of the invention comprising three separators; [101] - [ Figure 9] shows a variant of the thermal regulation device of [Figure 3] with a separator comprising one or more dielectric fluid circulation orifices.
  • a longitudinal direction corresponds to a main extension direction of a thermal regulation device, namely the direction of the greatest length of the regulation device.
  • the transverse and vertical directions correspond to directions perpendicular to the longitudinal direction. These three longitudinal, transverse and vertical directions form a trihedron.
  • FIG. 1 There is shown, in Figures 1 to 5, a thermal regulation device 2 for the cooling and/or heating of components 4 whose operation is sensitive to temperature, these components 4 being battery cells of the shape cylindrical 4.
  • Device 2 includes:
  • a separator 12 having a generally planar shape and having a plate shape, said separator 12 being arranged to receive the battery cells 4 so that these battery cells 4 extend on either side of the separator 12, this separator 12 being configured to create at least two stages of dielectric fluid flow.
  • the stage which communicates with the dielectric fluid inlet is a high stage Eh, namely the highest stage among all the stages.
  • the stage which communicates with the dielectric fluid outlet is a low stage Eb, namely the lowest stage among all the stages.
  • the separator 12 is arranged so that the dielectric fluid entering through the inlet 8 first travels through one of the stages Eh, Eb which defines a section of said channel 26, then the other of the stages which defines another section 26 of said channel downstream of the previous section 26, and the separator 12 has a free edge 27 so as to provide a fluid passage, in particular U-shaped, between the two stages Eh, Eb.
  • the separator 12 is configured so that it can be placed approximately halfway up the battery cells 4.
  • the different stages Eh, Eb are located at different heights when the thermal regulation device 2 is mounted on the vehicle (not shown).
  • the Eh, Eb stages are thus in different vertical positions.
  • the dielectric fluid can make two or more passes in contact with each of the battery cells to be cooled, which makes it possible to increase the heat exchanges between the battery cells and the dielectric fluid.
  • the invention thus makes it possible to better cool or heat the battery cells 4.
  • the thermal regulation device 2 comprises a housing 30 defining with a bottom support 32 a compartment 34 configured to receive the battery cells 4.
  • the housing 30 further comprises a side wall 36 and a cover 38 connecting to the side wall 36.
  • the housing 30 comprises a dielectric fluid supply conduit 40 communicating with the inlet of the dielectric fluid flow channel 8 and a dielectric fluid discharge conduit 42 communicating with the outlet of the dielectric fluid flow channel 10.
  • conduits 40, 42 are made in one piece with the rest of the housing 30.
  • the dielectric fluid supply and discharge conduits 40, 42 are arranged in parallel one above the other. These conduits 40, 42 are arranged on one face of the side wall 36 and are open on the same side.
  • the side wall 36 has an annular shape, i.e. it follows a closed perimeter. This closed periphery is geometrically inscribed in a rectangle defined, for example by the cover 38 having a substantially rectangular periphery.
  • the side wall 36 has a shape matching the perimeter of battery cells 4 to be placed in the compartment 34.
  • the side wall 36 includes rounded undulations.
  • the side wall 36 comprises a fixing region 46 of the separator 12 on the side wall 36.
  • This fixing region 46 is in the form of a strip in which an edge of the separator 12 is embedded.
  • the separator 12 is secured to the side wall 36 of the housing 30 during overmolding of material on the separator 12 in order to form the side wall 36.
  • the separator 12 can be in contact with the side wall 36 without being secured to it.
  • the side wall 36 and the cover 38 can be made in one piece, for example in plastic.
  • the cover 38 comprises, on its main external face 50, reinforcing reliefs 52 in the form of boxes.
  • the cover 38 comprises, on its main internal face 54 facing the compartment 60, holding reliefs 70 configured to hold the battery cells 4 placed in the compartment 60.
  • These holding reliefs 70 include pins made in one piece with the cover 38.
  • These pins 70 are arranged along circular lines so as to be able to surround the top 72 of the battery cells 4.
  • the bottom support 80 is configured to hold the battery cells 4 to be placed in the compartment 60.
  • the bottom support 80 comprises housings 82 for each housing a battery cell 4.
  • Each housing 82 has for example a circular shape. In other alternative embodiments, the housings 82 have polygonal shapes, for example hexagonal.
  • the housings 82 are formed by openings 84 on a main wall 86 of the bottom support 80.
  • Each housing 82 comprises a shoulder 88 of annular shape, configured to serve as a stop for the component 4 to be placed in this housing 82.
  • This stop 88 is tight to the dielectric fluid.
  • Each housing 82 may include a seal 90 configured to apply to the battery cell 4 which is to be placed in this housing 82.
  • the housing seal 90 includes notches 92.
  • the battery cells 4 each comprise an enlarged base 94 configured to abut against the shoulder 88 of the housing 82 which receives this cell 4.
  • Each cell 4 is inserted through the housing 90 then, at the end of the insertion stroke, the cell 4 comes to abut against this shoulder 88 so that this cell 4 cannot pass through the housing 90 beyond a required position.
  • the battery cells 4 are thus held, at the bottom, by the bottom support 80, and, at the top, by these holding reliefs in the form of pins 70.
  • all the battery cells 4 can be held at the bottom, by the bottom support 80, and at the top , by these holding reliefs in the form of pins 70.
  • Figure 4 makes particularly visible the fact that the separator 12 comprises openings 100 having a circular outline, the openings 100 each being configured to receive a battery cell 4.
  • the openings 100 are arranged in parallel rows.
  • the separator 12 may comprise, for each opening 100, a seal 102 for each battery cell 4, this seal 102 being configured to be applied to the battery cell 4 to seal the opening 100.
  • the seals 102 on the separator 12 make it possible to prevent leaks of dielectric fluid through the separator 12, through the openings 100.
  • the separator 12 may have a multi-layer structure with two outer layers 104 (and an inner layer 102 forming a seal 102.
  • the separator 12 comprises a single rigid layer, with or without additional seals.
  • the outer layers 104 may comprise a polymer material.
  • the polymer material is a polyamide such as PA6 or PA66.
  • the inner layer 102 may comprise a polymer material.
  • the polymer material is in particular an elastomer such as FKM.
  • the internal layer 102 is configured to apply against the battery cell 4 placed in the opening 100 to ensure the waterproofing.
  • the bottom support 80 comprises a side wall 110 connecting to the main wall 86 which defines the housings. [151] Still in the example of Figure 3, the bottom support 80 is closed in a sealed manner by a bottom plate 112 which is applied against the side wall 110 of the bottom support 80.
  • a conductive bar 116 is placed in the space between the bottom plate 112 and the bottom support 80.
  • This space between the bottom plate 112 and the bottom support 80 is preferably sealed against the dielectric fluid which is prevented from passing through the main wall of the bottom support 80.
  • This conductive bar 116 also called “Busbar” in English, is used for the electrical connection of the battery cells 4.
  • the battery cells 4 each further comprise an orifice 117 arranged to be connected to the conductive bar 116.
  • the bottom plate 112 has reliefs, for example in the form of pins, configured to apply the conductive bar(s) against the components.
  • the device 2 comprises an electrical connector 120 configured to connect the set of conductive bars in contact with the components.
  • the conductive bar(s) 116 are located between the cover 38 and the cells 4.
  • the thermal regulation device comprises two separators 12, configured to provide three dielectric fluid flow stages E1, E2, E3, and each separator 12 has a free edge 27 so as to provide a U-shaped fluid passage between two consecutive stages, namely between E1 and E2 or E2 and E3.
  • the two consecutive separators 12 are arranged alternately on the dielectric fluid flow channel.
  • the variant of the invention of Figure 8 differs from that of Figure 7 in that the thermal regulation device 2 comprises three separators 12, configured to arrange four stages of flow of dielectric fluid and in that the supply and discharge conduits 40, 42 are not arranged on the same face of the side wall.
  • separators 12 include flow disruptors 140. These disruptors 140 are for example of the “dimple” type in English.
  • the separator(s) 12 may include flow disruptors 140.
  • Figure 9 illustrates an alternative embodiment of the invention as described previously with reference to Figure 3.
  • the separator 12 comprises several dielectric fluid circulation orifices 150 configured to allow the dielectric fluid to circulate through the separator 12.
  • the stage which communicates with the dielectric fluid inlet is a low stage, namely the lowest stage among all the stages and the stage which communicates with the dielectric fluid outlet is a high floor, namely the highest floor among all floors.
  • a pump is provided to force the flow of dielectric fluid from bottom to top.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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  • Manufacturing & Machinery (AREA)
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Abstract

The invention relates to a thermal regulation device (2) for components (4), including: - a dielectric fluid flow channel (6), this channel (6) comprising at least one inlet and at least one dielectric fluid outlet (8, 10); - a separator (12) arranged to receive the components (4) such that these components (4) extend on either side of the separator (12), this separator (12) being configured to create at least two dielectric fluid flow stages (Eh, Eb), these stages being arranged such that the dielectric fluid entering through the inlet first passes through one of the stages which defines a section (26) of the channel (6), and then the other one of the stages which defines another section (26) of the channel (6) downstream of the preceding section (26), and the separator (12) comprises a free edge (27) so as to provide a fluid passage, in particular U-shaped, between the two stages.

Description

Description Description
Titre de l'invention : Dispositif de régulation thermique pour composants Title of the invention: Thermal regulation device for components
[1] L’invention concerne un dispositif de régulation thermique pour des composants dont le fonctionnement est sensible à la température, ces composants étant notamment destinés au stockage d’énergie et pouvant être des cellules de batterie, notamment pour véhicule. [1] The invention relates to a thermal regulation device for components whose operation is sensitive to temperature, these components being intended in particular for energy storage and which may be battery cells, in particular for vehicles.
[2] L’invention concerne également un module comprenant un tel dispositif de régulation thermique et lesdits composants placés dans le dispositif de régulation thermique. [2] The invention also relates to a module comprising such a thermal regulation device and said components placed in the thermal regulation device.
[3] L’invention concerne en outre un procédé d’assemblage d’un tel module. [3] The invention further relates to a method of assembling such a module.
[4] Il est connu de nos jours d’équiper des véhicules électriques, thermiques ou hybrides des composants électrochimiques et/ou électroniques et/ou électrique. En particulier, un composant électrochimique est une cellule de batterie. Des cellules de batteries peuvent être positionnées dans un pack-batterie, ou un module de batteries. [4] It is known today to equip electric, thermal or hybrid vehicles with electrochemical and/or electronic and/or electrical components. In particular, an electrochemical component is a battery cell. Battery cells can be positioned in a battery pack, or a battery module.
[5] Par ailleurs, il est connu d’installer l’ensemble ou au moins une partie de ces packs-batterie au niveau du plancher du véhicule, sensiblement sur toute la largeur du véhicule. [5] Furthermore, it is known to install all or at least part of these battery packs at the level of the vehicle floor, substantially over the entire width of the vehicle.
[6] On comprend que, lors du fonctionnement du véhicule, les packs-batterie peuvent dégager une quantité de chaleur importante, et dès lors, être soumis à des hausses de température pouvant provoquer dans certains cas leur endommagement, voire leur destruction. [6] We understand that, during the operation of the vehicle, the battery packs can release a significant quantity of heat, and therefore, be subject to increases in temperature which can in certain cases cause their damage or even their destruction.
[7] Par conséquence, leur refroidissement est essentiel afin de les maintenir en bon état et d’assurer ainsi la fiabilité, l’autonomie et la performance du véhicule. Par ailleurs, le fonctionnement des packs-batterie peut être moins efficace en cas de basses températures, les composants électriques ou électroniques équipant ces packs-batterie ayant alors besoin d’un temps de montée en température avant de fonctionner à plein rendement. [7] Consequently, their cooling is essential in order to keep them in good condition and thus ensure the reliability, autonomy and performance of the vehicle. Furthermore, the operation of battery packs may be less efficient in the event of low temperatures, the electrical or electronic components equipping these battery packs then need a time to warm up before operating at full efficiency.
[8] Pour ce faire, on connaît, un dispositif de régulation thermique destiné à réguler la température des packs-batterie qui est mis en oeuvre pour assurer les fonctions de chauffage et/ou de refroidissement des cellules de batterie formant ces packs-batteries et ainsi optimiser le fonctionnement de ces cellules de batterie. [8] To do this, we know a thermal regulation device intended to regulate the temperature of the battery packs which is implemented to ensure the heating and/or cooling functions of the battery cells forming these battery packs and thus optimize the operation of these battery cells.
[9] Ces dispositifs de régulation thermique sont généralement parcourus par un fluide caloporteur, notamment un fluide diélectrique, à savoir un fluide inerte électriquement, qui peut, selon les besoins, soit absorber la chaleur émise par chaque pack-batterie afin de le refroidir, soit apporter de la chaleur, si la température du pack-batterie est insuffisante pour son bon fonctionnement. [9] These thermal regulation devices are generally traversed by a heat transfer fluid, in particular a dielectric fluid, namely an electrically inert fluid, which can, depending on the needs, either absorb the heat emitted by each battery pack in order to cool it, or provide heat, if the temperature of the battery pack is insufficient for its proper functioning.
[10] Il existe un besoin d’améliorer le dispositif de régulation thermique permettant d’accroître un échange de chaleur entre lesdits composants et le fluide caloporteur et de compenser des pertes de charges du fluide caloporteur. [10] There is a need to improve the thermal regulation device making it possible to increase heat exchange between said components and the heat transfer fluid and to compensate for pressure losses of the heat transfer fluid.
[11 ] L’invention vise à répondre à ce besoin. [11] The invention aims to meet this need.
[12] La présente invention a ainsi pour objet un dispositif de régulation thermique pour le refroidissement et/ou le chauffage de composants dont le fonctionnement est sensible à la température, ces composants étant notamment destinés au stockage d’énergie et pouvant être des cellules de batterie, ledit dispositif comportant : [12] The subject of the present invention is thus a thermal regulation device for the cooling and/or heating of components whose operation is sensitive to temperature, these components being intended in particular for energy storage and which may be storage cells. battery, said device comprising:
- un boîtier définissant un compartiment configuré pour recevoir les composants, - a box defining a compartment configured to receive the components,
- un canal d’écoulement de fluide diélectrique dans ce compartiment, ce canal comprenant au moins une entrée et au moins une sortie de fluide diélectrique, - a dielectric fluid flow channel in this compartment, this channel comprising at least one dielectric fluid inlet and at least one dielectric fluid outlet,
- un séparateur agencé pour recevoir les composants de sorte que ces composants s’étendent de part et d’autre du séparateur, ce séparateur étant configuré pour créer au moins deux étages d’écoulement de fluide diélectrique, le séparateur étant disposé de sorte que le fluide diélectrique entrant par l’entrée parcoure d’abord l’un des étages qui définit un tronçon dudit canal, puis l’autre des étages qui définit un autre tronçon dudit canal en aval du tronçon précédent, et le séparateur comporte un bord libre de manière à aménager un passage de fluide, notamment en U, entre les deux étages. - a separator arranged to receive the components so that these components extend on either side of the separator, this separator being configured to create at least two stages of flow of dielectric fluid, the separator being arranged so that the dielectric fluid entering through the inlet first travels through one of the stages which defines a section of said channel, then the other of the stages which defines another section of said channel downstream of the previous section, and the separator has a free edge so as to provide a fluid passage, in particular U-shaped, between the two stages.
[13] Au sens de la présente invention, les différents étages sont situés à différentes hauteurs lorsque le dispositif de régulation thermique est monté sur le véhicule. Les étages sont ainsi à différentes positions verticales. [13] For the purposes of the present invention, the different stages are located at different heights when the thermal regulation device is mounted on the vehicle. The floors are thus in different vertical positions.
[14] Grâce à l’invention, le fluide diélectrique peut effectuer deux ou davantage de passes au contact de chacun des composants à refroidir, ce qui permet d’accroître les échanges de chaleur entre les composants et le fluide diélectrique. L’invention permet ainsi de mieux refroidir ou chauffer les composants. [14] Thanks to the invention, the dielectric fluid can make two or more passes in contact with each of the components to be cooled, which makes it possible to increase the heat exchanges between the components and the dielectric fluid. The invention thus makes it possible to better cool or heat the components.
[15] Selon l’un des aspects de l’invention, l’étage qui communique avec l’entrée de fluide diélectrique est un étage haut, à savoir l’étage le plus haut parmi tous les étages. [15] According to one of the aspects of the invention, the stage which communicates with the dielectric fluid inlet is a high stage, namely the highest stage among all the stages.
[16] Selon l’un des aspects de l’invention, l’étage qui communique avec la sortie de fluide diélectrique est un étage bas, à savoir l’étage le plus bas parmi tous les étages. [16] According to one of the aspects of the invention, the stage which communicates with the dielectric fluid outlet is a low stage, namely the lowest stage among all the stages.
[17] Le fait que les passes de fluide soient à différents étages, avec un écoulement de fluide diélectrique de haut en bas en accomplissant un ou plusieurs virages verticaux, permet de profiter de la gravité pour compenser des pertes de charge. [17] The fact that the fluid passes are at different stages, with a flow of dielectric fluid from top to bottom completing one or more vertical turns, makes it possible to take advantage of gravity to compensate for pressure losses.
[18] Selon l’un des aspects de l’invention, le dispositif comprend une pompe configurée pour forcer l’écoulement de fluide diélectrique. [18] According to one aspect of the invention, the device comprises a pump configured to force the flow of dielectric fluid.
[19] Selon un autre des aspects de l’invention, l’étage qui communique avec l’entrée de fluide diélectrique est un étage bas, à savoir l’étage le plus bas parmi tous les étages. [19] According to another aspect of the invention, the stage which communicates with the dielectric fluid inlet is a low stage, namely the lowest stage among all the stages.
[20] Selon l’un des aspects de l’invention, l’étage qui communique avec la sortie de fluide diélectrique est un étage haut, à savoir l’étage le plus haut parmi tous les étages. [21] Dans cet exemple de réalisation d’écoulement du bas vers le haut, une pompe est prévue pour forcer l’écoulement de fluide diélectrique de bas vers le haut. [20] According to one of the aspects of the invention, the stage which communicates with the dielectric fluid outlet is a high stage, namely the highest stage among all the stages. [21] In this example embodiment of flow from bottom to top, a pump is provided to force the flow of dielectric fluid from bottom to top.
[22] Selon l’un des aspects de l’invention, le dispositif de régulation thermique comprend au moins deux séparateurs, par exemple deux ou trois séparateurs, configurés pour aménager au moins trois étages d’écoulement de fluide diélectrique, et chaque séparateur comporte un bord libre de manière à aménager un passage de fluide en U entre deux étages consécutifs. [22] According to one of the aspects of the invention, the thermal regulation device comprises at least two separators, for example two or three separators, configured to provide at least three stages of dielectric fluid flow, and each separator comprises a free edge so as to provide a U-shaped fluid passage between two consecutive stages.
[23] Selon l’un des aspects de l’invention, les deux séparateurs consécutifs sont disposés de manière alternée sur le canal d’écoulement de fluide diélectrique. [23] According to one of the aspects of the invention, the two consecutive separators are arranged alternately on the dielectric fluid flow channel.
[24] Selon l’un des aspects de l’invention, le séparateur comprend des ouvertures configurées chacune pour recevoir un composant. [24] According to one aspect of the invention, the separator comprises openings each configured to receive a component.
[25] Une fois placé dans l’ouverture, le composant fait saillie de chaque côté du séparateur. [25] Once placed in the opening, the component protrudes on either side of the divider.
[26] Selon l’un des aspects de l’invention, chaque ouverture présente un contour circulaire. [26] According to one of the aspects of the invention, each opening has a circular outline.
[27] Selon l’un des aspects de l’invention, les ouvertures sont disposées suivant des rangées, notamment des rangées parallèles. [27] According to one of the aspects of the invention, the openings are arranged in rows, in particular parallel rows.
[28] Selon l’un des aspects de l’invention, le séparateur présente une forme générale plane. [28] According to one of the aspects of the invention, the separator has a generally planar shape.
[29] Selon l’un des aspects de l’invention, le séparateur présente une forme de plaque. [29] According to one of the aspects of the invention, the separator has a plate shape.
[30] Selon l’un des aspects de l’invention, le séparateur est configuré de sorte à pouvoir être placé sensiblement à mi-hauteur du composant. [30] According to one of the aspects of the invention, the separator is configured so that it can be placed approximately halfway up the component.
[31] Selon l’un des aspects de l’invention, le séparateur comprend, pour chaque ouverture, un joint d’étanchéité pour chaque composant, ce joint étant configuré pour s’appliquer sur le composant pour rendre étanche l’ouverture. [31] According to one of the aspects of the invention, the separator comprises, for each opening, a seal for each component, this seal being configured to apply to the component to seal the opening.
[32] Ainsi, les joints sur le séparateur permettent d’empêcher les fuites de fluide diélectrique à travers le séparateur, par les ouvertures. [33] Selon l’un des aspects de l’invention, le séparateur présente une structure multicouche avec deux couches externes et une couche interne formant joint d’étanchéité. [32] Thus, the seals on the separator help prevent leakage of dielectric fluid through the separator, through the openings. [33] According to one aspect of the invention, the separator has a multi-layer structure with two outer layers and an inner layer forming a seal.
[34] Selon l’un des aspects de l’invention, l’une au moins des couches externes peut comprendre au moins un matériau en polymère. Le matériau en polymère est un polyamide tel que le PA6 ou le PA66. [34] According to one of the aspects of the invention, at least one of the external layers may comprise at least one polymer material. The polymer material is a polyamide such as PA6 or PA66.
[35] Selon l’un des aspects de l’invention, la couche interne peut comprendre au moins un matériau en polymère. Le matériau en polymère est notamment un élastomère tel que le FKM. Selon un mode de réalisation alternatif, le séparateur comprend une unique couche rigide et le au moins un joint d’étanchéité. [35] According to one aspect of the invention, the internal layer may comprise at least one polymer material. The polymer material is in particular an elastomer such as FKM. According to an alternative embodiment, the separator comprises a single rigid layer and at least one seal.
[36] Selon un mode de réalisation alternatif, le séparateur comprend une unique couche rigide. [36] According to an alternative embodiment, the separator comprises a single rigid layer.
[37] Selon l’un des aspects de l’invention, la couche interne est configurée pour venir s’appliquer contre le composant mis en place dans l’ouverture pour assurer l’étanchéité. [37] According to one of the aspects of the invention, the internal layer is configured to apply against the component placed in the opening to ensure sealing.
[38] Selon l’un des aspects de l’invention, le séparateur présente une structure multicouche avec deux couches externes et une couche interne formant joint d’étanchéité, la couche interne étant configurée pour venir s’appliquer contre le composant mis en place dans l’ouverture pour assurer l’étanchéité. [38] According to one of the aspects of the invention, the separator has a multilayer structure with two external layers and an internal layer forming a seal, the internal layer being configured to apply against the component placed in place into the opening to ensure a tight seal.
[39] Selon l’un des aspects de l’invention, le séparateur comporte un ou plusieurs orifices de circulation de fluide diélectrique configurés pour permettre au fluide diélectrique de circuler à travers le séparateur. [39] According to one aspect of the invention, the separator comprises one or more dielectric fluid circulation orifices configured to allow the dielectric fluid to circulate through the separator.
[40] Selon l’un des aspects de l’invention, le ou les orifices de circulation de fluide diélectrique sont placés à proximité, notamment entre, des ouvertures recevant les composants. [40] According to one aspect of the invention, the dielectric fluid circulation orifice(s) are placed close to, in particular between, openings receiving the components.
[41] Ceci permet de réduire les pertes de charges tout en maintenant une puissance de refroidissement souhaitée. Dans le cas où une pompe électrique est utilisée pour mettre en mouvement le fluide caloporteur, ceci permet de réduire la consommation électrique de la pompe. [42] Selon l’un des aspects de l’invention, le séparateur comporte un nombre d’ouvertures pour les composants, nombre qui est au moins égal à la moitié du nombre total de composants à placer dans le dispositif de régulation thermique. [41] This makes it possible to reduce pressure losses while maintaining the desired cooling power. In the case where an electric pump is used to set the heat transfer fluid in motion, this makes it possible to reduce the electrical consumption of the pump. [42] According to one of the aspects of the invention, the separator comprises a number of openings for the components, a number which is at least equal to half of the total number of components to be placed in the thermal regulation device.
[43] Selon l’un des aspects de l’invention, le boîtier définit avec un support de fond le compartiment configuré pour recevoir les composants, le boîtier comprenant une paroi latérale et un couvercle se raccordant à la paroi latérale. [43] According to one aspect of the invention, the housing defines with a bottom support the compartment configured to receive the components, the housing comprising a side wall and a cover connecting to the side wall.
[44] Selon l’un des aspects de l’invention, la paroi latérale présente une forme annulaire, à savoir qu’elle suit un pourtour fermé, par exemple ce pourtour étant inscrit géométriquement dans un rectangle. [44] According to one aspect of the invention, the side wall has an annular shape, namely that it follows a closed perimeter, for example this perimeter being geometrically inscribed in a rectangle.
[45] Selon l’un des aspects de l’invention, le compartiment est délimité entre deux faces opposées de la paroi latérale du boîtier, notamment deux faces verticales opposées appartenant à la paroi latérale du boîtier, et l’un des séparateurs étant jointif avec l’une de ces faces et l’autre des séparateurs étant jointif avec l’autre de ces faces. [45] According to one of the aspects of the invention, the compartment is delimited between two opposite faces of the side wall of the housing, in particular two opposite vertical faces belonging to the side wall of the housing, and one of the separators being contiguous with one of these faces and the other of the separators being contiguous with the other of these faces.
[46] Autrement dit, au moins la moitié des composants sont insérés dans le séparateur. Le nombre d’ouvertures peut être supérieur à 60% ou 70% du nombre total de composants à placer dans le compartiment. Ce nombre est de préférence inférieur à 80% ou 90% du nombre total de composants. [46] In other words, at least half of the components are inserted into the separator. The number of openings can be greater than 60% or 70% of the total number of components to be placed in the compartment. This number is preferably less than 80% or 90% of the total number of components.
[47] Selon l’un des aspects de l’invention, la paroi latérale et le couvercle sont faits d’une seule pièce, par exemple en matière plastique. [47] According to one of the aspects of the invention, the side wall and the cover are made in one piece, for example in plastic material.
[48] Selon l’un des aspects de l’invention, la paroi latérale s’inscrit dans un pourtour rectangulaire. [48] According to one of the aspects of the invention, the side wall is part of a rectangular perimeter.
[49] Selon l’un des aspects de l’invention, la paroi latérale comprend une région de fixation du séparateur sur la paroi latérale. [49] According to one of the aspects of the invention, the side wall comprises a region for fixing the separator on the side wall.
[50] Cette région de fixation se présente sous la forme d’une bande dans laquelle est encastrée une bordure du séparateur. [50] This fixing region is in the form of a strip into which a border of the separator is embedded.
[51] Le séparateur est par exemple solidarisé à la paroi latérale du boîtier lors d’un surmoulage de matière sur le séparateur en vue de former la paroi latérale. [51] The separator is for example secured to the side wall of the housing during overmolding of material on the separator in order to form the side wall.
[52] En variante, le séparateur peut être en contact avec la paroi latérale sans être solidarisé à celle-ci. [53] Selon l’un des aspects de l’invention, le séparateur peut comporter des perturbateurs de l’écoulement. Ces perturbateurs sont par exemple du type « dimples » en anglais. [52] Alternatively, the separator can be in contact with the side wall without being secured to it. [53] According to one of the aspects of the invention, the separator may include flow disruptors. These disruptors are for example of the “dimples” type in English.
[54] Selon l’un des aspects de l’invention, le boîtier comporte un conduit d’amenée de fluide diélectrique communiquant avec l’entrée du canal d’écoulement de fluide diélectrique et un conduit d’évacuation de fluide diélectrique communiquant avec la sortie du canal d’écoulement de fluide diélectrique. [54] According to one of the aspects of the invention, the housing comprises a dielectric fluid supply conduit communicating with the inlet of the dielectric fluid flow channel and a dielectric fluid discharge conduit communicating with the outlet of the dielectric fluid flow channel.
[55] Selon l’un des aspects de l’invention, les conduits sont réalisés d’un seul tenant avec le reste du boîtier. [55] According to one of the aspects of the invention, the conduits are made in one piece with the rest of the housing.
[56] Selon l’un des aspects de l’invention, les conduits d’amenée et d’évacuation de fluide diélectrique sont disposés de manière parallèle, notamment l’un au- dessus de l’autre. [56] According to one of the aspects of the invention, the conduits for supplying and discharging dielectric fluid are arranged in parallel, in particular one above the other.
[57] Selon l’un des aspects de l’invention, les conduits d’amenée et d’évacuation de fluide diélectrique sont disposés sur une face de la paroi latérale. [57] According to one of the aspects of the invention, the conduits for supplying and discharging dielectric fluid are arranged on one face of the side wall.
[58] Selon l’un des aspects de l’invention, les conduits d’amenée et d’évacuation de fluide diélectrique sont ouverts du même côté. [58] According to one aspect of the invention, the dielectric fluid supply and discharge conduits are open on the same side.
[59] Ainsi, les tubulures qui se raccordent aux conduits sont placées d’un même côté, ce qui permet un encombrement optimisé. [59] Thus, the tubes which connect to the conduits are placed on the same side, which allows for optimized space requirements.
[60] Selon l’un des aspects de l’invention, le couvercle comprend, sur sa face principale externe, des reliefs de renfort, notamment sous forme de caissons. [60] According to one of the aspects of the invention, the cover comprises, on its main external face, reinforcing reliefs, in particular in the form of boxes.
[61] Selon l’un des aspects de l’invention, le couvercle comprend, sur sa face principale interne tournée vers le compartiment, des reliefs de maintien configurés pour maintenir les composants placés dans le compartiment. [61] According to one of the aspects of the invention, the cover comprises, on its main internal face facing the compartment, holding reliefs configured to hold the components placed in the compartment.
[62] Selon l’un des aspects de l’invention, ces reliefs de maintien comportent des picots, notamment réalisés d’un seul tenant avec le couvercle. [62] According to one of the aspects of the invention, these holding reliefs include pins, in particular made in one piece with the cover.
[63] Ces picots sont disposés suivant des lignes circulaires de manière à pouvoir entourer le sommet des composants, notamment des cellules de batterie. [63] These pins are arranged along circular lines so as to be able to surround the top of the components, in particular battery cells.
[64] Selon l’un des aspects de l’invention, les composants sont des cellules de batterie de forme cylindrique ou prismatique. [65] Selon l’un des aspects de l’invention, la paroi latérale présente une forme épousant le pourtour de composants à placer dans le compartiment. [64] According to one aspect of the invention, the components are battery cells of cylindrical or prismatic shape. [65] According to one of the aspects of the invention, the side wall has a shape matching the perimeter of the components to be placed in the compartment.
[66] Selon l’un des aspects de l’invention, la paroi latérale comprend des ondulations arrondies. [66] According to one of the aspects of the invention, the side wall comprises rounded undulations.
[67] Selon l’un des aspects de l’invention, le support de fond est configuré pour maintenir les composants à placer dans le compartiment. [67] According to one aspect of the invention, the bottom support is configured to hold the components to be placed in the compartment.
[68] Selon l’un des aspects de l’invention, le support de fond comprend des logements pour loger chacun un composant. [68] According to one of the aspects of the invention, the bottom support comprises housings for each housing a component.
[69] Selon l’un des aspects de l’invention, chaque logement présente une forme circulaire. [69] According to one of the aspects of the invention, each housing has a circular shape.
[70] Selon l’un des aspects de l’invention, les logements sont formés par des ajours sur une paroi principale du support de fond. [70] According to one of the aspects of the invention, the housings are formed by openings on a main wall of the bottom support.
[71] Selon l’un des aspects de l’invention, chaque logement comprend un épaulement, notamment de forme annulaire, configuré pour servir de butée au composant à placer dans ce logement. [71] According to one of the aspects of the invention, each housing comprises a shoulder, in particular of annular shape, configured to serve as a stop for the component to be placed in this housing.
[72] Cette butée est de préférence étanche au fluide diélectrique. [72] This stop is preferably sealed against the dielectric fluid.
[73] Selon l’un des aspects de l’invention, chaque logement reçoit un joint d’étanchéité configuré pour s’appliquer sur le composant qui est à placer dans ce logement. [73] According to one of the aspects of the invention, each housing receives a seal configured to apply to the component which is to be placed in this housing.
[74] Selon l’un des aspects de l’invention, chaque composant est inséré à travers le logement puis, en fin de course d’insertion, le composant vient buter contre cet épaulement de sorte que ce composant ne puisse pas traverser le logement au- delà d’une position requise. [74] According to one of the aspects of the invention, each component is inserted through the housing then, at the end of the insertion stroke, the component abuts against this shoulder so that this component cannot pass through the housing beyond a required position.
[75] Les composants sont ainsi maintenus, en bas, par le support de fond, et, en haut, par ces reliefs de maintien, par exemple sous forme de picots. [75] The components are thus held, at the bottom, by the bottom support, and, at the top, by these holding reliefs, for example in the form of pins.
[76] Selon l’un des aspects de l’invention, chaque logement est pourvu d’une ou plusieurs fentes sur son pourtour pour laisser passer du fluide diélectrique[76] According to one aspect of the invention, each housing is provided with one or more slots on its periphery to allow dielectric fluid to pass through.
[77] De cette manière, les pertes de charges dues au passage du fluide diélectrique à travers le logement sont réduites.. [78] Selon l’un des aspects de l’invention, le support de fond comprend une paroi latérale se raccordant à la paroi principale qui définit les logements. [77] In this way, the pressure losses due to the passage of the dielectric fluid through the housing are reduced. [78] According to one of the aspects of the invention, the bottom support comprises a side wall connecting to the main wall which defines the housings.
[79] Selon l’un des aspects de l’invention, le support de fond est fermé de manière étanche par une plaque de fond qui vient s’appliquer contre la paroi latérale du support de fond. [79] According to one of the aspects of the invention, the bottom support is closed in a sealed manner by a bottom plate which is applied against the side wall of the bottom support.
[80] Selon l’un des aspects de l’invention, un ou plusieurs barreaux conducteurs sont placés dans l’espace entre la plaque de fond et le support de fond. [80] According to one aspect of the invention, one or more conductive bars are placed in the space between the bottom plate and the bottom support.
[81 ] Cet espace entre la plaque de fond et le support de fond est de préférence rendu étanche au fluide diélectrique qui est empêché de traverser la paroi principale du support de fond. [81] This space between the bottom plate and the bottom support is preferably sealed against the dielectric fluid which is prevented from passing through the main wall of the bottom support.
[82] Selon l’un des aspects de l’invention, ces barreaux conducteurs, encore appelés « Busbars » en anglais, servent à la connexion électrique des cellules de batterie. [82] According to one aspect of the invention, these conductive bars, also called “Busbars” in English, are used for the electrical connection of the battery cells.
[83] Selon l’un des aspects de l’invention, la plaque de fond comporte des reliefs, par exemple sous forme de picots, configurés pour appliquer le ou les barreaux conducteurs contre les composants. [83] According to one of the aspects of the invention, the bottom plate has reliefs, for example in the form of pins, configured to apply the conductive bar(s) against the components.
[84] Selon l’un des aspects de l’invention, les composants viennent en appui sur ces barreaux conducteurs, une fois ces composants montés sur le dispositif de régulation thermique. [84] According to one of the aspects of the invention, the components come to rest on these conductive bars, once these components are mounted on the thermal regulation device.
[85] Selon l’un des aspects de l’invention, le dispositif comporte un connecteur électrique configuré pour connecter l’ensemble de barreaux conducteurs en contact avec les composants. [85] According to one of the aspects of the invention, the device comprises an electrical connector configured to connect the set of conductive bars in contact with the components.
[86] L’invention a encore pour objet un module comprenant au moins un dispositif de régulation thermique selon l’invention, et des composants, notamment des cellules de batterie, placés dans le dispositif de régulation thermique. [86] The invention also relates to a module comprising at least one thermal regulation device according to the invention, and components, in particular battery cells, placed in the thermal regulation device.
[87] Selon l’un des aspects de l’invention, le composant comprend une base élargie configurée pour venir en butée contre l’épaulement du logement qui reçoit ce composant. [87] According to one of the aspects of the invention, the component comprises an enlarged base configured to abut against the shoulder of the housing which receives this component.
[88] L’invention a encore pour objet un procédé d’assemblage d’un module selon l’invention, comprenant l’étape d’insérer les composants dans les logements, notamment des ajours, d’un support de fond du dispositif de régulation thermique. [88] The invention also relates to a method of assembling a module according to the invention, comprising the step of inserting the components into the housings, in particular openings, a bottom support of the thermal regulation device.
[89] Cette insertion se fait en faisant passer la composant à travers l’ajour jusqu’à ce que la base élargie du composant vienne buter contre l’épaulement du logement qui reçoit ce composant. Une fois ces insertions terminées, la plaque de fond est assemblée avec le support de fond, par exemple par collage ou soudage. [89] This insertion is done by passing the component through the opening until the enlarged base of the component abuts against the shoulder of the housing which receives this component. Once these insertions are completed, the bottom plate is assembled with the bottom support, for example by gluing or welding.
[90] L’insertion des composants, notamment des cellules de batterie, est ainsi réalisée, en quelque sorte, par le dessous du support de fond. [90] The insertion of the components, in particular the battery cells, is thus carried out, as it were, from below the bottom support.
[91] Dans l’invention, les composants, notamment les cellules de batterie, sont immergées dans le fluide diélectrique, au moins sur une certaine hauteur. [91] In the invention, the components, in particular the battery cells, are immersed in the dielectric fluid, at least over a certain height.
[92] D’autres caractéristiques et avantages de l’invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d’exemple illustratif et non limitatif, et des dessins annexés parmi lesquels : [92] Other characteristics and advantages of the invention will appear more clearly on reading the following description, given as an illustrative and non-limiting example, and the appended drawings among which:
[93] - la [Figure 1] illustre, une vue schématique et en perspective du dispositif de régulation thermique selon l’invention ; [93] - [Figure 1] illustrates a schematic and perspective view of the thermal regulation device according to the invention;
[94] - la [Figure 2] illustre, une vue schématique et en perspective du dispositif de régulation thermique selon l’invention sans le boîtier du dispositif ; [94] - [Figure 2] illustrates a schematic perspective view of the thermal regulation device according to the invention without the device housing;
[95] - la [Figure 3] montre une vue en coupe du dispositif de régulation thermique selon l’axe A-A de la figure 1 ; [95] - [Figure 3] shows a sectional view of the thermal regulation device along the axis A-A of Figure 1;
[96] - la [Figure 4] montre une vue en coupe selon l’axe B-B de la figure 1 , en perspective, du dispositif de régulation thermique ; [96] - [Figure 4] shows a sectional view along the axis B-B of Figure 1, in perspective, of the thermal regulation device;
[97] - la [Figure 5] montre une vue de dessus de support de fond avec les composants ; [97] - [Figure 5] shows a top view of the bottom support with the components;
[98] - la [Figure 6] montre une vue en coupe schématique du dispositif de l’invention avec des barreaux conducteurs ; [98] - [Figure 6] shows a schematic sectional view of the device of the invention with conductive bars;
[99] - la [Figure 7] montre une vue en coupe transversale du dispositif selon une variante de réalisation de l’invention comportant deux séparateurs ; [99] - [Figure 7] shows a cross-sectional view of the device according to a variant embodiment of the invention comprising two separators;
[100] - la [Figure 8] montre une vue en coupe transversale du dispositif selon une variante de réalisation de l’invention comportant trois séparateurs ; [101] - la [Figure 9] montre une variante du dispositif de régulation thermique de la [Figure 3] avec un séparateur comportant un ou plusieurs orifices de circulation de fluide diélectrique. [100] - [Figure 8] shows a cross-sectional view of the device according to a variant embodiment of the invention comprising three separators; [101] - [Figure 9] shows a variant of the thermal regulation device of [Figure 3] with a separator comprising one or more dielectric fluid circulation orifices.
[102] Les caractéristiques, variantes et les différentes formes de réalisation de l’invention peuvent être associées les unes avec les autres, selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes par rapport aux autres. On pourra notamment imaginer des variantes de l’invention ne comprenant qu’une sélection de caractéristiques décrites par la suite de manière isolée des autres caractéristiques décrites, si cette sélection de caractéristiques est suffisante pour conférer un avantage technique et/ou pour différencier l’invention par rapport à l’état de la technique antérieur. [102] The characteristics, variants and different embodiments of the invention can be associated with each other, in various combinations, to the extent that they are not incompatible or exclusive with respect to each other. In particular, it will be possible to imagine variants of the invention comprising only a selection of characteristics described subsequently in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage and/or to differentiate the invention. compared to the prior art.
[103] Dans la description qui va suivre, les dénominations « longitudinale », « transversale » et « verticale » se réfèrent à l’orientation d’un dispositif de régulation thermique selon l’invention. [103] In the description which follows, the terms “longitudinal”, “transverse” and “vertical” refer to the orientation of a thermal regulation device according to the invention.
[104] Une direction longitudinale correspond à une direction d’extension principale d’un dispositif de régulation thermique, à savoir la direction de la plus grande longueur du dispositif de régulation. Les directions transversale et verticale correspondent à des directions perpendiculaires à la direction longitudinale. Ces trois directions longitudinale, transversale et verticale forment un trièdre. [104] A longitudinal direction corresponds to a main extension direction of a thermal regulation device, namely the direction of the greatest length of the regulation device. The transverse and vertical directions correspond to directions perpendicular to the longitudinal direction. These three longitudinal, transverse and vertical directions form a trihedron.
[105] On a représenté, sur les figures 1 à 5, un dispositif de régulation thermique 2 pour le refroidissement et/ou le chauffage de composants 4 dont le fonctionnement est sensible à la température, ces composants 4 étant des cellules de batterie de forme cylindrique 4. [105] There is shown, in Figures 1 to 5, a thermal regulation device 2 for the cooling and/or heating of components 4 whose operation is sensitive to temperature, these components 4 being battery cells of the shape cylindrical 4.
[106] Le dispositif 2 comporte : [106] Device 2 includes:
[107] - un canal d’écoulement de fluide diélectrique 6, ce canal comprenant une entrée et une sortie de fluide diélectrique 8, 10, [107] - a dielectric fluid flow channel 6, this channel comprising an inlet and an outlet of dielectric fluid 8, 10,
[108] - un séparateur 12 présentant une forme générale plane et présentant une forme de plaque, ledit séparateur 12 étant agencé pour recevoir les cellules de batterie 4 de sorte que ces cellules de batterie 4 s’étendent de part et d’autre du séparateur 12, ce séparateur 12 étant configuré pour créer au moins deux étages d’écoulement de fluide diélectrique. [109] L’étage qui communique avec l’entrée de fluide diélectrique est un étage haut Eh, à savoir l’étage le plus haut parmi tous les étages. [108] - a separator 12 having a generally planar shape and having a plate shape, said separator 12 being arranged to receive the battery cells 4 so that these battery cells 4 extend on either side of the separator 12, this separator 12 being configured to create at least two stages of dielectric fluid flow. [109] The stage which communicates with the dielectric fluid inlet is a high stage Eh, namely the highest stage among all the stages.
[110] L’étage qui communique avec la sortie de fluide diélectrique est un étage bas Eb, à savoir l’étage le plus bas parmi tous les étages. [110] The stage which communicates with the dielectric fluid outlet is a low stage Eb, namely the lowest stage among all the stages.
[111] Le séparateur 12 est disposé de sorte que le fluide diélectrique entrant par l’entrée 8 parcoure d’abord l’un des étages Eh, Eb qui définit un tronçon dudit canal 26, puis l’autre des étages qui définit un autre tronçon 26 dudit canal en aval du tronçon 26 précédent, et le séparateur 12 comporte un bord libre 27 de manière à aménager un passage de fluide, notamment en U, entre les deux étages Eh, Eb. [111] The separator 12 is arranged so that the dielectric fluid entering through the inlet 8 first travels through one of the stages Eh, Eb which defines a section of said channel 26, then the other of the stages which defines another section 26 of said channel downstream of the previous section 26, and the separator 12 has a free edge 27 so as to provide a fluid passage, in particular U-shaped, between the two stages Eh, Eb.
[112] Le séparateur 12 est configuré de sorte à pouvoir être placé sensiblement à mi-hauteur des cellules de batterie 4. [112] The separator 12 is configured so that it can be placed approximately halfway up the battery cells 4.
[113] Au sens de la présente invention, les différents étages Eh, Eb sont situés à différentes hauteurs lorsque le dispositif de régulation thermique 2 est monté sur le véhicule (non-représenté). Les étages Eh, Eb sont ainsi à différentes positions verticales. [113] For the purposes of the present invention, the different stages Eh, Eb are located at different heights when the thermal regulation device 2 is mounted on the vehicle (not shown). The Eh, Eb stages are thus in different vertical positions.
[114] Grâce à l’invention, le fluide diélectrique peut effectuer deux ou davantage de passes au contact de chacun des cellules de batterie à refroidir, ce qui permet d’accroître les échanges de chaleur entre les cellules de batterie et le fluide diélectrique. Le fait que les passes de fluide soient à différents étages Eh, Eb, avec un écoulement de fluide diélectrique de haut en bas Fh, Fb en accomplissant un ou plusieurs virages verticaux Fv, permet de profiter de la gravité pour compenser des pertes de charge. L’invention permet ainsi de mieux refroidir ou chauffer les cellules de batterie 4. [114] Thanks to the invention, the dielectric fluid can make two or more passes in contact with each of the battery cells to be cooled, which makes it possible to increase the heat exchanges between the battery cells and the dielectric fluid. The fact that the fluid passes are at different stages Eh, Eb, with a flow of dielectric fluid from top to bottom Fh, Fb by completing one or more vertical turns Fv, makes it possible to take advantage of gravity to compensate for pressure losses. The invention thus makes it possible to better cool or heat the battery cells 4.
[115] Toujours en référence à la figure 1 , le dispositif de régulation thermique 2 comporte un boîtier 30 définissant avec un support de fond 32 un compartiment 34 configuré pour recevoir les cellules de batterie 4. [115] Still with reference to Figure 1, the thermal regulation device 2 comprises a housing 30 defining with a bottom support 32 a compartment 34 configured to receive the battery cells 4.
[116] Le boîtier 30 comprend en outre une paroi latérale 36 et un couvercle 38 se raccordant à la paroi latérale 36. [116] The housing 30 further comprises a side wall 36 and a cover 38 connecting to the side wall 36.
[117] Le boîtier 30 comporte un conduit d’amenée de fluide diélectrique 40 communiquant avec l’entrée du canal d’écoulement de fluide diélectrique 8 et un conduit d’évacuation de fluide diélectrique 42 communiquant avec la sortie du canal d’écoulement de fluide diélectrique 10. [117] The housing 30 comprises a dielectric fluid supply conduit 40 communicating with the inlet of the dielectric fluid flow channel 8 and a dielectric fluid discharge conduit 42 communicating with the outlet of the dielectric fluid flow channel 10.
[118] Les conduits 40, 42 sont réalisés d’un seul tenant avec le reste du boîtier 30. [118] The conduits 40, 42 are made in one piece with the rest of the housing 30.
[119] Les conduits d’amenée et d’évacuation de fluide diélectrique 40, 42 sont disposés de manière parallèle l’un au-dessus de l’autre. Ces conduits 40, 42 sont disposés sur une face de la paroi latérale 36 et sont ouverts du même côté. [119] The dielectric fluid supply and discharge conduits 40, 42 are arranged in parallel one above the other. These conduits 40, 42 are arranged on one face of the side wall 36 and are open on the same side.
[120] Ainsi, les tubulures (non-représentées) qui se raccordent aux conduits 40, 42 sont placées d’un même côté, ce qui permet un encombrement optimisé. [120] Thus, the tubes (not shown) which connect to conduits 40, 42 are placed on the same side, which allows for optimized space requirements.
[121] La paroi latérale 36 présente une forme annulaire, à savoir qu’elle suit un pourtour fermé. Ce pourtour fermé est inscrit géométriquement dans un rectangle défini, par exemple par le couvercle 38 ayant un pourtour sensiblement rectangulaire. [121] The side wall 36 has an annular shape, i.e. it follows a closed perimeter. This closed periphery is geometrically inscribed in a rectangle defined, for example by the cover 38 having a substantially rectangular periphery.
[122] Comme illustré sur la figure 1 , la paroi latérale 36 présente une forme épousant le pourtour de cellules de batterie 4 à placer dans le compartiment 34. La paroi latérale 36 comprend des ondulations arrondies. [122] As illustrated in Figure 1, the side wall 36 has a shape matching the perimeter of battery cells 4 to be placed in the compartment 34. The side wall 36 includes rounded undulations.
[123] La paroi latérale 36 comprend une région de fixation 46 du séparateur 12 sur la paroi latérale 36. Cette région de fixation 46 se présente sous la forme d’une bande dans laquelle est encastrée une bordure du séparateur 12. [123] The side wall 36 comprises a fixing region 46 of the separator 12 on the side wall 36. This fixing region 46 is in the form of a strip in which an edge of the separator 12 is embedded.
[124] En référence à la figure 3, le séparateur 12 est solidarisé à la paroi latérale 36 du boîtier 30 lors d’un surmoulage de matière sur le séparateur 12 en vue de former la paroi latérale 36. [124] With reference to Figure 3, the separator 12 is secured to the side wall 36 of the housing 30 during overmolding of material on the separator 12 in order to form the side wall 36.
[125] En variante, le séparateur 12 peut être en contact avec la paroi latérale 36 sans être solidarisé à celle-ci. [125] Alternatively, the separator 12 can be in contact with the side wall 36 without being secured to it.
[126] D’autres moyens de fixations du séparateur 12 à la paroi latérale 36 sont envisageables, tels que par exemple une encoche dans la paroi latérale dans laquelle on vient insérer le séparateur 12. L’encoche peut comprendre des moyens d’étanchéité tel qu’un joint élastique pour former une liaison étanche avec le séparateur 12. [126] Other means of fixing the separator 12 to the side wall 36 are possible, such as for example a notch in the side wall into which the separator 12 is inserted. The notch may include sealing means such as than an elastic seal to form a tight connection with the separator 12.
[127] Comme c’est visible sur la figure 4, la paroi latérale 36 et le couvercle 38 peuvent être faits d’une seule pièce, par exemple en matière plastique. [128] Le couvercle 38 comprend, sur sa face principale externe 50, des reliefs de renfort 52 sous forme de caissons. [127] As can be seen in Figure 4, the side wall 36 and the cover 38 can be made in one piece, for example in plastic. [128] The cover 38 comprises, on its main external face 50, reinforcing reliefs 52 in the form of boxes.
[129] Le couvercle 38 comprend, sur sa face principale interne 54 tournée vers le compartiment 60, des reliefs de maintien 70 configurés pour maintenir les cellules de batterie 4 placés dans le compartiment 60. [129] The cover 38 comprises, on its main internal face 54 facing the compartment 60, holding reliefs 70 configured to hold the battery cells 4 placed in the compartment 60.
[130] Ces reliefs de maintien 70 comportent des picots réalisés d’un seul tenant avec le couvercle 38. [130] These holding reliefs 70 include pins made in one piece with the cover 38.
[131] Ces picots 70 sont disposés suivant des lignes circulaires de manière à pouvoir entourer le sommet 72 des cellules de batterie 4. [131] These pins 70 are arranged along circular lines so as to be able to surround the top 72 of the battery cells 4.
[132] Comme illustré sur la figure 5, le support de fond 80 est configuré pour maintenir les cellules de batterie 4 à placer dans le compartiment 60. [132] As illustrated in Figure 5, the bottom support 80 is configured to hold the battery cells 4 to be placed in the compartment 60.
[133] Le support de fond 80 comprend des logements 82 pour loger chacun une cellule de batterie 4. Chaque logement 82 présente par exemple une forme circulaire. Dans d’autres modes de réalisation alternatifs, les logements 82 présentent des formes polygonales, par exemple hexagonales. [133] The bottom support 80 comprises housings 82 for each housing a battery cell 4. Each housing 82 has for example a circular shape. In other alternative embodiments, the housings 82 have polygonal shapes, for example hexagonal.
[134] Les logements 82 sont formés par des ajours 84 sur une paroi principale 86 du support de fond 80. Chaque logement 82 comprend un épaulement 88 de forme annulaire, configuré pour servir de butée au composant 4 à placer dans ce logement 82. [134] The housings 82 are formed by openings 84 on a main wall 86 of the bottom support 80. Each housing 82 comprises a shoulder 88 of annular shape, configured to serve as a stop for the component 4 to be placed in this housing 82.
[135] Cette butée 88 est étanche au fluide diélectrique. [135] This stop 88 is tight to the dielectric fluid.
[136] Chaque logement 82 peut comprendre un joint d’étanchéité 90 configuré pour s’appliquer sur la cellule de batterie 4 qui est à placer dans ce logement 82. [136] Each housing 82 may include a seal 90 configured to apply to the battery cell 4 which is to be placed in this housing 82.
[137] Le joint d’étanchéité de logement 90 comprend des encoches 92. [137] The housing seal 90 includes notches 92.
[138] Les cellules de batterie 4 comprennent chacune une base élargie 94 configurée pour venir en butée contre l’épaulement 88 du logement 82 qui reçoit cette cellule 4. [138] The battery cells 4 each comprise an enlarged base 94 configured to abut against the shoulder 88 of the housing 82 which receives this cell 4.
[139] Chaque cellule 4 est insérée à travers le logement 90 puis, en fin de course d’insertion, la cellule 4 vient buter contre cet épaulement 88 de sorte que cette cellule 4 ne puisse pas traverser le logement 90 au-delà d’une position requise. [140] Les cellules de batterie 4 sont ainsi maintenues, en bas, par le support de fond 80, et, en haut, par ces reliefs de maintien sous forme de picots 70. [139] Each cell 4 is inserted through the housing 90 then, at the end of the insertion stroke, the cell 4 comes to abut against this shoulder 88 so that this cell 4 cannot pass through the housing 90 beyond a required position. [140] The battery cells 4 are thus held, at the bottom, by the bottom support 80, and, at the top, by these holding reliefs in the form of pins 70.
[141 ] En se référant aux variantes des figures 3 et 9, mais y compris pour d’autres variantes de l’invention, toutes les cellules de batterie 4 peuvent être maintenues en bas, par le support de fond 80, et, en haut, par ces reliefs de maintien sous forme de picots 70. [141] Referring to the variants of Figures 3 and 9, but including other variants of the invention, all the battery cells 4 can be held at the bottom, by the bottom support 80, and at the top , by these holding reliefs in the form of pins 70.
[142] La figure 4 rend particulièrement visible le fait que le séparateur 12 comprend des ouvertures 100 présentant un contour circulaire, les ouvertures 100 étant configurées chacune pour recevoir une cellule de batterie 4. [142] Figure 4 makes particularly visible the fact that the separator 12 comprises openings 100 having a circular outline, the openings 100 each being configured to receive a battery cell 4.
[143] Une fois placé dans l’ouverture 100, la cellule de batterie 4 fait saillie de chaque côté du séparateur 12. [143] Once placed in the opening 100, the battery cell 4 protrudes on each side of the separator 12.
[144] Les ouvertures 100 sont disposées suivant des rangées parallèles. [144] The openings 100 are arranged in parallel rows.
[145] Le séparateur 12 peut comprendre, pour chaque ouverture 100, un joint d’étanchéité 102 pour chaque cellule de batterie 4, ce joint 102 étant configuré pour s’appliquer sur la cellule de batterie 4 pour rendre étanche l’ouverture 100. [145] The separator 12 may comprise, for each opening 100, a seal 102 for each battery cell 4, this seal 102 being configured to be applied to the battery cell 4 to seal the opening 100.
[146] Avantageusement, les joints 102 sur le séparateur 12 permettent d’empêcher les fuites de fluide diélectrique à travers le séparateur 12, par les ouvertures 100. [146] Advantageously, the seals 102 on the separator 12 make it possible to prevent leaks of dielectric fluid through the separator 12, through the openings 100.
[147] Le séparateur 12 peut présenter une structure multicouche avec deux couches externes 104 (et une couche interne 102 formant joint d’étanchéité 102. Dans des modes de réalisation alternatifs non-représentés, le séparateur 12 comprend une unique couche rigide, avec ou sans joints additionnels. [147] The separator 12 may have a multi-layer structure with two outer layers 104 (and an inner layer 102 forming a seal 102. In alternative embodiments not shown, the separator 12 comprises a single rigid layer, with or without additional seals.
[148] Les couches externes 104 peuvent comprendre un matériau en polymère. Le matériau en polymère est un polyamide tel que le PA6 ou le PA66. [148] The outer layers 104 may comprise a polymer material. The polymer material is a polyamide such as PA6 or PA66.
[149] La couche interne 102 peut comprendre un matériau en polymère. Le matériau en polymère est notamment un élastomère tel que le FKM.Dans le cas d’une structure multicouche, la couche interne 102 est configurée pour venir s’appliquer contre la cellule de batterie 4 mise en place dans l’ouverture 100 pour assurer l’étanchéité. [149] The inner layer 102 may comprise a polymer material. The polymer material is in particular an elastomer such as FKM. In the case of a multilayer structure, the internal layer 102 is configured to apply against the battery cell 4 placed in the opening 100 to ensure the waterproofing.
[150] Comme c’est visible sur la figure 3, le support de fond 80 comprend une paroi latérale 110 se raccordant à la paroi principale 86 qui définit les logements. [151] Toujours dans l’exemple de la figure 3, le support de fond 80 est fermé de manière étanche par une plaque de fond 112 qui vient s’appliquer contre la paroi latérale 110 du support de fond 80. [150] As can be seen in Figure 3, the bottom support 80 comprises a side wall 110 connecting to the main wall 86 which defines the housings. [151] Still in the example of Figure 3, the bottom support 80 is closed in a sealed manner by a bottom plate 112 which is applied against the side wall 110 of the bottom support 80.
[152] A titre d’illustration, en référence à la figure 6, un barreau conducteur 116 est placé dans l’espace entre la plaque de fond 112 et le support de fond 80. [152] By way of illustration, with reference to Figure 6, a conductive bar 116 is placed in the space between the bottom plate 112 and the bottom support 80.
[153] Cet espace entre la plaque de fond 112 et le support de fond 80 est de préférence rendu étanche au fluide diélectrique qui est empêché de traverser la paroi principale du support de fond 80. [153] This space between the bottom plate 112 and the bottom support 80 is preferably sealed against the dielectric fluid which is prevented from passing through the main wall of the bottom support 80.
[154] Ce barreau conducteur 116, encore appelé « Busbar » en anglais, sert à la connexion électrique des cellules de batterie 4. Les cellules de batterie 4 comprennent en outre chacune un orifice 117 agencé pour être connecté au barreau conducteur 116. [154] This conductive bar 116, also called “Busbar” in English, is used for the electrical connection of the battery cells 4. The battery cells 4 each further comprise an orifice 117 arranged to be connected to the conductive bar 116.
[155] La plaque de fond 112 comporte des reliefs, par exemple sous forme de picots, configurés pour appliquer le ou les barreaux conducteurs contre les composants. [155] The bottom plate 112 has reliefs, for example in the form of pins, configured to apply the conductive bar(s) against the components.
[156] Les cellules de batterie 4 viennent en appui sur ce barreau conducteur 116, une fois ces cellules de batterie 4 montées sur le dispositif de régulation thermique 2. [156] The battery cells 4 come to rest on this conductive bar 116, once these battery cells 4 are mounted on the thermal regulation device 2.
[157] Comme illustré sur la figure 1 , le dispositif 2 comporte un connecteur électrique 120 configuré pour connecter l’ensemble de barreaux conducteurs en contact avec les composants. [157] As illustrated in Figure 1, the device 2 comprises an electrical connector 120 configured to connect the set of conductive bars in contact with the components.
[158] Dans d’autres modes de réalisation alternatifs non-représentés, le ou les barreaux conducteurs 116 sont situés entre le couvercle 38 et les cellules 4. [158] In other alternative embodiments not shown, the conductive bar(s) 116 are located between the cover 38 and the cells 4.
[159] En se référant aux figures 7 et 8 illustrant des variantes de l’invention, on voit que le compartiment 60 est délimité entre les deux faces verticales opposées 130, 132 appartenant à la paroi latérale 36 du boîtier 30, et l’un des séparateurs 12 étant jointif avec l’une de ces faces 130, 132 et l’autre des séparateurs 12 étant jointif avec l’autre de ces faces 130, 132. [159] Referring to Figures 7 and 8 illustrating variants of the invention, we see that the compartment 60 is delimited between the two opposite vertical faces 130, 132 belonging to the side wall 36 of the housing 30, and one separators 12 being contiguous with one of these faces 130, 132 and the other of the separators 12 being contiguous with the other of these faces 130, 132.
[160] Dans l’exemple de la figure 7, le dispositif de régulation thermique comprend deux séparateurs 12, configurés pour aménager trois étages d’écoulement de fluide diélectrique E1 , E2, E3, et chaque séparateur 12 comporte un bord libre 27 de manière à aménager un passage de fluide en U entre deux étages consécutifs, à savoir entre E1 et E2 ou E2 et E3. [160] In the example of Figure 7, the thermal regulation device comprises two separators 12, configured to provide three dielectric fluid flow stages E1, E2, E3, and each separator 12 has a free edge 27 so as to provide a U-shaped fluid passage between two consecutive stages, namely between E1 and E2 or E2 and E3.
[161] Ces deux virages en U forment un chemin en S entre les conduits d’amenée et d’évacuation 40, 42. [161] These two U-shaped bends form an S-shaped path between the supply and discharge conduits 40, 42.
[162] Les deux séparateurs consécutifs 12 sont disposés de manière alternée sur le canal d’écoulement de fluide diélectrique. [162] The two consecutive separators 12 are arranged alternately on the dielectric fluid flow channel.
[163] La variante de l’invention de la figure 8 diffère de celle de la figure 7 en ce que le dispositif de régulation thermique 2 comprend trois séparateurs 12, configurés pour aménager quatre étages d’écoulement de fluide diélectrique et en ce que les conduits d’amenée et d’évacuation 40, 42 ne sont pas disposés sur la même face de la paroi latérale. [163] The variant of the invention of Figure 8 differs from that of Figure 7 in that the thermal regulation device 2 comprises three separators 12, configured to arrange four stages of flow of dielectric fluid and in that the supply and discharge conduits 40, 42 are not arranged on the same face of the side wall.
[164] Dans cette variante de réalisation illustrée sur la figure 8, on voit que les séparateurs 12 comportent des perturbateurs de l’écoulement 140. Ces perturbateurs 140 sont par exemple du type « dimples » en anglais. [164] In this alternative embodiment illustrated in Figure 8, we see that the separators 12 include flow disruptors 140. These disruptors 140 are for example of the “dimple” type in English.
[165] Bien entendu, quelle que soit la variante de l’invention, le ou les séparateurs 12 peuvent comporter des perturbateurs de l’écoulement 140. [165] Of course, whatever the variant of the invention, the separator(s) 12 may include flow disruptors 140.
[166] La figure 9 illustre une alternative de réalisation de l’invention telle qu’elle a été décrite précédemment en référence à la figure 3. [166] Figure 9 illustrates an alternative embodiment of the invention as described previously with reference to Figure 3.
[167] Le séparateur 12 comporte plusieurs orifices de circulation de fluide diélectrique 150 configurés pour permettre au fluide diélectrique de circuler à travers le séparateur 12. [167] The separator 12 comprises several dielectric fluid circulation orifices 150 configured to allow the dielectric fluid to circulate through the separator 12.
[168] Ces orifices de circulation de fluide diélectrique 150 sont placés à proximité entre des ouvertures 100 recevant les cellules de batterie 4. [168] These dielectric fluid circulation orifices 150 are placed nearby between openings 100 receiving the battery cells 4.
[169] Dans le cas où une pompe électrique (non-représentée) est utilisée pour mettre en mouvement le fluide caloporteur, ceci permet de réduire la consommation électrique de la pompe. [169] In the case where an electric pump (not shown) is used to set the heat transfer fluid in motion, this makes it possible to reduce the electrical consumption of the pump.
[170] Dans une variante non représentée, l’étage qui communique avec l’entrée de fluide diélectrique est un étage bas, à savoir l’étage le plus bas parmi tous les étages et l’étage qui communique avec la sortie de fluide diélectrique est un étage haut, à savoir l’étage le plus haut parmi tous les étages. [171] Dans cet exemple de réalisation d’écoulement du bas vers le haut, une pompe est prévue pour forcer l’écoulement de fluide diélectrique de bas vers le haut. [170] In a variant not shown, the stage which communicates with the dielectric fluid inlet is a low stage, namely the lowest stage among all the stages and the stage which communicates with the dielectric fluid outlet is a high floor, namely the highest floor among all floors. [171] In this bottom-to-top flow embodiment, a pump is provided to force the flow of dielectric fluid from bottom to top.

Claims

Revendications Claims
[Revendication 1] Dispositif de régulation thermique (2) pour le refroidissement et/ou le chauffage de composants (4) dont le fonctionnement est sensible à la température, ces composants (4) étant notamment destinés au stockage d’énergie et pouvant être des cellules de batterie (4), ledit dispositif (2) comportant : [Claim 1] Thermal regulation device (2) for cooling and/or heating components (4) whose operation is sensitive to temperature, these components (4) being intended in particular for energy storage and which may be battery cells (4), said device (2) comprising:
- un boîtier (30) définissant un compartiment (60) configuré pour recevoir les composants, - a housing (30) defining a compartment (60) configured to receive the components,
- un canal d’écoulement de fluide diélectrique (6) dans ce compartiment, ce canal (6) comprenant au moins une entrée et au moins une sortie de fluide diélectrique (8, 10), - a dielectric fluid flow channel (6) in this compartment, this channel (6) comprising at least one inlet and at least one dielectric fluid outlet (8, 10),
- un séparateur (12) agencé pour recevoir les composants (4) de sorte que ces composants (4) s’étendent de part et d’autre du séparateur (12), ce séparateur (12) étant configuré pour créer au moins deux étages d’écoulement de fluide diélectrique (Eh, Eb), le séparateur étant disposé de sorte que le fluide diélectrique entrant par l’entrée parcoure d’abord l’un des étages (Eh, Eb) qui définit un tronçon (26) dudit canal (6), puis l’autre des étages (Eh, Eb) qui définit un autre tronçon (26) dudit canal (6) en aval du tronçon (26) précédent, et le séparateur (12) comporte un bord libre (27) de manière à aménager un passage de fluide, notamment en U, entre les deux étages (Eh, Eb). - a separator (12) arranged to receive the components (4) so that these components (4) extend on either side of the separator (12), this separator (12) being configured to create at least two stages flow of dielectric fluid (Eh, Eb), the separator being arranged so that the dielectric fluid entering through the inlet first travels through one of the stages (Eh, Eb) which defines a section (26) of said channel (6), then the other of the stages (Eh, Eb) which defines another section (26) of said channel (6) downstream of the previous section (26), and the separator (12) has a free edge (27) so as to provide a fluid passage, in particular U-shaped, between the two stages (Eh, Eb).
[Revendication 2] Dispositif selon la revendication 1 , comprenant au moins deux séparateurs (12), par exemple deux ou trois séparateurs (12), configurés pour aménager au moins trois étages d’écoulement de fluide diélectrique (E1 , E2, E3), et chaque séparateur (12) comporte un bord libre (27) de manière à aménager un passage de fluide en U entre deux étages consécutifs. [Claim 2] Device according to claim 1, comprising at least two separators (12), for example two or three separators (12), configured to provide at least three stages of dielectric fluid flow (E1, E2, E3), and each separator (12) has a free edge (27) so as to provide a U-shaped fluid passage between two consecutive stages.
[Revendication 3] Dispositif selon la revendication 1 ou 2, le séparateur comprend (12) en outre des ouvertures (100) configurées chacune pour recevoir un composant (4). [Claim 3] Device according to claim 1 or 2, the separator further comprises (12) openings (100) each configured to receive a component (4).
[Revendication 4] Dispositif selon la revendication 3, dans lequel le séparateur (12) comprend, pour chaque ouverture (100), un joint d’étanchéité (102) pour chaque composant (4), ce joint (102) étant configuré pour s’appliquer sur le composant (4) pour rendre étanche l’ouverture (100). [Claim 4] Device according to claim 3, in which the separator (12) comprises, for each opening (100), a seal (102) for each component (4), this seal (102) being configured to apply to the component (4) to seal the opening (100).
[Revendication 5] Dispositif selon la revendication 4, dans lequel le séparateur (12) présente une structure multicouche avec deux couches externes (104) et une couche interne formant joint d’étanchéité (102), la couche interne (102) étant configurée pour venir s’appliquer contre le composant (4) mis en place dans l’ouverture (100) pour assurer l’étanchéité. [Claim 5] Device according to claim 4, wherein the separator (12) has a multilayer structure with two outer layers (104) and an inner layer forming a seal (102), the inner layer (102) being configured to come to apply against the component (4) placed in the opening (100) to ensure sealing.
[Revendication 6] Dispositif selon la revendication 3, dans lequel le séparateur (12) comprend une unique couche rigide et le au moins un joint d’étanchéité (102). [Claim 6] Device according to claim 3, in which the separator (12) comprises a single rigid layer and the at least one seal (102).
[Revendication 7] Dispositif selon la revendication 3, dans lequel le séparateur (12) comprend une unique couche rigide. [Claim 7] A device according to claim 3, wherein the separator (12) comprises a single rigid layer.
[Revendication 8] Dispositif selon l’une quelconque des revendications précédentes, dans lequel le séparateur (12) comporte un ou plusieurs orifices de circulation de fluide diélectrique (150) configurés pour permettre au fluide diélectrique de circuler à travers le séparateur (12). [Claim 8] Device according to any preceding claim, wherein the separator (12) includes one or more dielectric fluid circulation ports (150) configured to allow dielectric fluid to flow through the separator (12).
[Revendication 9] Dispositif selon la revendication 6, dans lequel le ou les orifices de circulation de fluide diélectrique (150) sont placés à proximité, notamment entre, des ouvertures (100) recevant les composants (4). [Claim 9] Device according to claim 6, in which the dielectric fluid circulation orifice(s) (150) are placed near, in particular between, the openings (100) receiving the components (4).
[Revendication 10] Dispositif selon l’une quelconque des revendications précédentes, dans lequel le boîtier (30) définit avec un support de fond (80) le compartiment (60) configuré pour recevoir les composants, le boîtier (30) comprenant une paroi latérale (36) et un couvercle (38) se raccordant à la paroi latérale (36). [Claim 10] Device according to any one of the preceding claims, in which the housing (30) defines with a bottom support (80) the compartment (60) configured to receive the components, the housing (30) comprising a side wall (36) and a cover (38) connecting to the side wall (36).
[Revendication 11] Dispositif selon la revendication précédente, dans lequel le compartiment (60) est délimité entre deux faces opposées (130, 132) de la paroi latérale (36) du boîtier (30), notamment deux faces verticales opposées (130, 132) appartenant à la paroi latérale (36) du boîtier (30), et l’un des séparateurs (12) étant jointif avec l’une de ces faces (130, 132) et l’autre des séparateurs (12) étant jointif avec l’autre de ces faces (130, 132). [Claim 11] Device according to the preceding claim, in which the compartment (60) is delimited between two opposite faces (130, 132) of the side wall (36) of the housing (30), in particular two opposite vertical faces (130, 132 ) belonging to the side wall (36) of the housing (30), and one of the separators (12) being contiguous with one of these faces (130, 132) and the other of the separators (12) being contiguous with the other of these faces (130, 132).
[Revendication 12] Dispositif selon la revendication 10 ou 11 , dans lequel la paroi latérale (36) comprend une région de fixation (46) du séparateur (12) sur la paroi latérale (36). [Claim 12] Device according to claim 10 or 11, wherein the side wall (36) comprises a fixing region (46) of the separator (12) on the side wall (36).
[Revendication 13] Dispositif selon l’une des revendications 10 à 12, dans lequel le couvercle (38) comprend, sur sa face principale interne (54) tournée vers le compartiment (60), des reliefs de maintien (70) configurés pour maintenir les composants (4) placés dans le compartiment (60). [Claim 13] Device according to one of claims 10 to 12, in which the cover (38) comprises, on its main internal face (54) facing the compartment (60), holding reliefs (70) configured to hold the components (4) placed in the compartment (60).
[Revendication 14] Dispositif selon l’une des revendications 10 à 13, dans lequel le support de fond (80) comprend des logements (82) pour loger chacun un composant (4). [Claim 14] Device according to one of claims 10 to 13, in which the bottom support (80) comprises housings (82) for each housing a component (4).
[Revendication 15] Module comprenant au moins un dispositif de régulation thermique selon l’une quelconque des revendications précédentes, et des composants (4), notamment des cellules de batterie (4), placés dans le dispositif de régulation thermique (2). [Claim 15] Module comprising at least one thermal regulation device according to any one of the preceding claims, and components (4), in particular battery cells (4), placed in the thermal regulation device (2).
PCT/EP2024/050538 2023-02-02 2024-01-11 Thermal regulation device for components WO2024160500A1 (en)

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FRFR2300997 2023-02-02

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6479185B1 (en) * 2000-04-04 2002-11-12 Moltech Power Systems, Inc. Extended life battery pack with active cooling
US20070072061A1 (en) * 2005-09-28 2007-03-29 Hideo Shimizu Power supply unit and method for cooling battery contained therein
CN108258359A (en) * 2017-09-07 2018-07-06 吉林大学 Mixed flow temperature property prismatic battery group
DE202021102441U1 (en) * 2020-08-10 2021-07-15 Kreisel Electric Gmbh & Co Kg Temperature control device for individual battery cells combined to form a module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6479185B1 (en) * 2000-04-04 2002-11-12 Moltech Power Systems, Inc. Extended life battery pack with active cooling
US20070072061A1 (en) * 2005-09-28 2007-03-29 Hideo Shimizu Power supply unit and method for cooling battery contained therein
CN108258359A (en) * 2017-09-07 2018-07-06 吉林大学 Mixed flow temperature property prismatic battery group
DE202021102441U1 (en) * 2020-08-10 2021-07-15 Kreisel Electric Gmbh & Co Kg Temperature control device for individual battery cells combined to form a module

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