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WO2012168648A1 - Device for cooling cylindrical electrochemical cells - Google Patents

Device for cooling cylindrical electrochemical cells Download PDF

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Publication number
WO2012168648A1
WO2012168648A1 PCT/FR2012/051260 FR2012051260W WO2012168648A1 WO 2012168648 A1 WO2012168648 A1 WO 2012168648A1 FR 2012051260 W FR2012051260 W FR 2012051260W WO 2012168648 A1 WO2012168648 A1 WO 2012168648A1
Authority
WO
WIPO (PCT)
Prior art keywords
cells
electrochemical cells
cylindrical electrochemical
plates
cylindrical
Prior art date
Application number
PCT/FR2012/051260
Other languages
French (fr)
Inventor
Frederic PAILHOUX
Arnaud Drouin
Original Assignee
Peugeot Citroen Automobiles Sa
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 Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2012168648A1 publication Critical patent/WO2012168648A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—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
    • H01M10/64—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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates 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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/293—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 characterised by the material
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a cooling device for cylindrical electrochemical cells.
  • the invention finds a particularly advantageous application in the field of motor vehicles for cooling electric energy storage devices supplying electrical machines of the vehicle. [04] STATE OF THE ART
  • the corrugated pocket has, on two faces, opposite to each other, hollows of radius of curvature greater than the radius of the cells and bumps for advancing inside the spaces between two successive cells of the same row.
  • Such cooling devices improve the heat exchange between the pocket and the cells.
  • the invention is in particular to solve this problem.
  • the invention relates to a device for cooling cylindrical electrochemical cells comprising:
  • a support comprising rows of housings for receiving the cylindrical electrochemical cells
  • At least one cooling bag positioned between two successive rows of cylindrical electrochemical cells
  • thermal conductive foam plates positioned between the pocket and the cylindrical electrochemical cells
  • a cover comprising holding plates extending along the axis of the cylindrical electrochemical cells, these holding plates having a longitudinal end bearing against an outer wall of the cylindrical electrochemical cells and in that the holding plates have a portion with a progressive slope connecting two portions of constant thickness, so that the foam plates are gradually compressed between the cylindrical electrochemical cells and the cooling bag during the introduction of the cover on the support.
  • each holding plate has an angle of 10 to 20 degrees relative to a wall of the lid.
  • the cover comprises an alternation of a set of two V-shaped holding plates and a holding plate extending perpendicularly to the wall.
  • the two holding plates form an angle of 90 ° between them.
  • the cover bears against the cylindrical electrochemical cells by means of three holding plates per cylindrical electrochemical cell.
  • the cooling bag is of corrugated shape, this pocket having on two opposite sides with respect to each other of the recesses having a radius of curvature greater than the radius of the cylindrical electrochemical cells and the bumps in alternation, these bumps advancing inside spaces between two successive cylindrical electrochemical cells of the same row of cylindrical electrochemical cells.
  • the support comprises housing having substantially the same diameter as the cylindrical electrochemical cells, these housing comprising an annular flange against which an end face of a cylindrical electrochemical cell is supported.
  • the thermal conductive foam plates are made of fiberglass.
  • FIG. 1 a schematic representation of the cooling device of cylindrical electrochemical cells according to the invention without the cover;
  • Figure 2 a schematic representation of the sole support of the cooling device according to the invention
  • Figure 3 a detailed sectional view of a pocket between two rows of cells of the device according to the invention
  • Figure 4 a schematic representation of the cylindrical electrochemical cell cooling device according to the invention without the support with the holding plates shown without the gradual slope to better visualize their implantation on the lid;
  • Figures 5a-5b sectional views of the cooling device according to the invention representing the lid during its introduction.
  • FIGS 1 and 4 show a device 1 for cooling cylindrical electrochemical cells 2.
  • This device 1 comprises a support 10 comprising a row 141, 142 of housing 1 1 to receive the cells 2, and at least one cooling bag 20 positioned between two successive rows 141, 142 of cells 2.
  • Thermal conductive foam plates 40 are positioned between the pocket 20 and the cells 2.
  • the device 1 further comprises a lid 50 of such shape that the foam plates 40 are compressed progressively between the cylindrical electrochemical cells 2 when the lid 50 is put in place. on the support 10.
  • the cylindrical cells 2 comprise electrodes stacked and wound along an axis X.
  • the electrodes are protected by an outer wall 3.
  • the outer wall 3 is made of aluminum. Thanks to the cylindrical geometry of the cells 2, the radial thermal conduction is lower by a ratio of one hundred to the axial thermal conduction. This limits the radial cooling capacity to the outer wall 3.
  • the outer wall 3 is the best possible exchange surface for the extraction of the heat generated during operation of the cells 2, insofar as this wall 3 has the largest area.
  • the end faces 4, 5 of the cells 2 are used by electrical terminals 6 as well as by the degassing devices of the active ingredients of the cell 2 in the event of a malfunction of the cell 2 (so-called "venting" devices). .
  • a support 10 receiving the cells 2 of substantially parallelepiped shape is shown in detail in Figure 2.
  • the support 10 allows degassing in case of malfunction of the cells 2.
  • the support 10 has, in addition to the maintenance function mechanical, the segregation of the degassing circuit relative to the rest of the system. Gases linked to Degassing must be independent of the rest of the system for safety reasons (see gas toxicity that may be involved).
  • the support 10 comprises the housing 1 1 to group the cells 2 in rows 141, 142.
  • These housings 1 1 have substantially the same diameter OD as the cells 2 and these housing 1 1 comprise an annular flange 12 against which an end face 4 of a cylindrical cell 2 is supported.
  • Each row 141 of housing 1 1 is shifted in a longitudinal direction DL relative to the row 142 of housing 1 1 adjacent, so that one can position the cooling bag 20 between two rows 141, 142 of cells 2 positioned in dwellings 1 1.
  • the diameter D0 of the housing 1 1 is between 35 and 55 mm.
  • the distance D1 between each housing 1 1 of the same row 141, 142 is at least 6 mm for example.
  • This longitudinal offset D2 corresponds to the distance between two straight lines perpendicular to the direction DL longitudinal support 10 and passing through the axis of two successive housing 1 1 taken in two rows 141, 142 different.
  • the housing 1 1 allow the evacuation of gases produced by the degassing devices installed on the end 4 of the cells 2.
  • the support 10 has orifices 15 for receiving pads 27 of the pocket 20 to facilitate the positioning of the pocket 20 between the rows 141, 142 of cells 2.
  • Figure 3 shows a pocket 20 having, on two faces 22, 23 opposite one another, recesses 24 having a radius of curvature greater than the radius of cells 2 and bumps 25 alternately.
  • the bumps 25 correspond to the meeting between the ends of the walls of the pocket delimiting two successive recesses 24.
  • the bumps 25 are intended to advance inside the spaces between two successive cells 2 of the same row 141, 142, which doubles the exchange surface between the pocket 20 and the cells 2. This takes two times more heat of electrochemical cells 2.
  • two successive bumps 25 and located on two opposite faces 22, 23 of the pocket have between them a longitudinal shift D3 corresponding to the longitudinal offset D2 between the housing 1 1 of the support 10.
  • This longitudinal offset D3 corresponds to the distance between two straight lines perpendicular to the longitudinal direction DL of the pocket 20 passing through the successive peaks of bumps on two opposite faces 22, 23.
  • the center of a hollow 24 of one of the faces 22, 23 corresponds to the center a boss 25 of the other face 22, 23.
  • the bumps 25 have between them a longitudinal offset of the order of 30.5 mm.
  • the geometry of the pocket 20 allows an acceleration of the flow in the thinnest portions 26 of the pocket and a development of vortices at the bumps 25. These two parameters make it possible to increase the exchange coefficient and therefore to increase the quality of cooling.
  • the positioning of the pocket 20 on the support 10 is effected by means of pads 27 fitting into the positioning orifices 15 of the support 10.
  • the pocket 20 is made of electrically insulating material to electrically isolate the cells 2 coolant 21 it contains.
  • the pocket 20 is made of plastic.
  • plates 40 of thermal conductive foam are sandwiched between the cells 2 and the pocket 20.
  • sandwiched is meant that the plates 40 are compressed between the cells 2 and the wall
  • the cells 2 having a radius smaller than the radius of curvature of the recesses 24 of the pocket 20, the plates 40 ensure the contact between the cells 2 and the pocket 20.
  • the plates 40 thermal conductive foam are made of fiberglass.
  • the plates 40 are preferably glued in the recesses 24 of the pocket 20.
  • cover 50 for electrically isolating the cells 2 of the external components to the device 1 and to maintain the cells 2 axially and radially.
  • This cover 50 also serves as a support for electronic components external to the device. 1 and allows direct access to the terminals 6 of the cells 2 through orifices (not shown).
  • the cover 50 has a substantially parallelepipedal shape and is open towards the support 10.
  • the cover 50 has a main wall 52 connected by two opposite walls 53, 55 opposite. Once the cover 50 has been put in place, the ends of the walls 53, 55 are in contact with the support 10 of the cells 2.
  • the cover 50 has holding plates 61 -63 extending along the axis X of the cells 2. These plates 61 - 63 have a longitudinal end intended to bear against the outer wall of the cells 2. The plates 61 -63 are intended to press the cells 2 over the entire surface of the thermal conductive plate 40 in contact with the pocket 20 to the extent that these plates 61 -63 are, for each depression of the plate 40, opposite the far left part, the center and the far right part of the plate 40.
  • Each cell 2 is held by three plates 61 -63 (see Figure 4).
  • the first plate 61 forms a right angle with the wall 53, 55 carrying said plate 61.
  • the first plate 61 is positioned in an area where the distance between the cell 2 and the wall 53, 55 is the smallest.
  • the second and third plates 62, 63 extend towards the cells 2 from an area in the middle of two successive cells 2.
  • the plates 62, 63 form an angle of 45 degrees with the wall 53, 55.
  • the second plate 62 and the third plate 63 form a V-shaped assembly having a right angle between the two plates 62, 63.
  • the cover 50 thus comprises an alternation of a set of two V-shaped plates 62, 63 and a plate 61 extending perpendicularly to a wall 53, 55.
  • the geometry of the holding plates 61-63 is shown in detail in Figures 5a-5b.
  • the holding plates 61 -63 comprise two portions 64, 66 of constant thickness.
  • the portion 66 has a smaller thickness than the portion 64.
  • a portion 65 with a progressive slope extends between the two portions 64, 66.
  • the portion 65 with a gradual slope has an angle with respect to the wall 53, 55.
  • L angle a is between 10 and 20 degrees.
  • This geometry of the holding plates 61 -63 makes it possible to facilitate the assembly of the device 1, in particular by progressively compressing, thanks to the portion 65 with a progressive slope, the plates 40 of foam between the cells 2 and the pocket 20 when when the lid 50 is fitted. [050] When the lid 50 is mounted on the support 10, the lid 50 opposes a force exerted by the compressed foam plate 40 on the cells 2.
  • the invention is not limited to a two-row system 141, 142 of cells 2 and a pocket 20.
  • the device 1 may comprise more than two rows 141, 142 of cells 2 and more than one pocket 20 positioned between two rows 141, 142 of cells 2.
  • the device 1 has N rows of cells, it comprises N-1 bags 20.

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

Abstract

The invention essentially relates to a device (1) for cooling cylindrical electrochemical cells (2), comprising: a substrate (10) comprising rows (141, 142) of recesses (11) for receiving the cylindrical electrochemical cells, at least one cooling pocket (20) positioned between two consecutive rows (141, 142) of cylindrical electrochemical cells (2), heat-conductive foam plates (40) positioned between the pocket (20) and the cylindrical electrochemical cells (2), characterized in that it further comprises a cover (50) having a shape such that the foam plates (40) are gradually compressed between the cylindrical electrochemical cells (2) and the cooling pocket (20), when the cover (50) is positioned over the substrate.

Description

DISPOSITIF DE REFROIDISSEMENT DE CELLULES  DEVICE FOR COOLING CELLS
ELECTROCHIMIQUES CYLINDRIQUES  CYLINDRICAL ELECTROCHEMICALS
[01] DOMAINE TECHNIQUE DE L'INVENTION [01] TECHNICAL FIELD OF THE INVENTION
[02] L'invention concerne un dispositif de refroidissement de cellules électrochimiques cylindriques. [02] The invention relates to a cooling device for cylindrical electrochemical cells.
[03] L'invention trouve une application particulièrement avantageuse dans le domaine des véhicules automobiles pour le refroidissement de dispositifs de stockage d'énergie électrique alimentant des machines électriques du véhicule. [04] ETAT DE LA TECHNIQUE [03] The invention finds a particularly advantageous application in the field of motor vehicles for cooling electric energy storage devices supplying electrical machines of the vehicle. [04] STATE OF THE ART
[05] Comme décrit dans le document US-6228524, on connaît des dispositifs de refroidissement de cellules électrochimiques cylindriques comportant des poches de refroidissement de forme ondulée dans lesquelles circule un liquide de refroidissement. Ces poches de refroidissement sont positionnées entre deux rangées successives de cellules. Par ailleurs, un matériau conducteur thermique est de préférence positionné entre la poche et les cellules. [05] As described in US-6228524, there are known cylindrical electrochemical cell cooling devices having corrugated cooling pockets in which circulates a cooling liquid. These cooling pockets are positioned between two successive rows of cells. Furthermore, a thermal conductive material is preferably positioned between the pocket and the cells.
[06] La poche de forme ondulée comporte, sur deux faces, opposées l'une par rapport à l'autre, des creux de rayon de courbure supérieur au rayon des cellules et des bosses destinées à avancer à l'intérieur des espaces entre deux cellules successives d'une même rangée. [06] The corrugated pocket has, on two faces, opposite to each other, hollows of radius of curvature greater than the radius of the cells and bumps for advancing inside the spaces between two successive cells of the same row.
[07] De tels dispositifs de refroidissement améliorent les échanges thermiques entre la poche et les cellules. [07] Such cooling devices improve the heat exchange between the pocket and the cells.
[08] Toutefois, de tels dispositifs présentent des difficultés d'assemblage pour obtenir un bloc de cellules compact. [08] However, such devices have assembly difficulties to obtain a compact block of cells.
[09] OBJET DE L'INVENTION [09] PURPOSE OF THE INVENTION
[010] L'invention a notamment pour but de résoudre ce problème. [011] A cet effet, l'invention concerne un dispositif de refroidissement de cellules électrochimiques cylindriques comportant : [010] The invention is in particular to solve this problem. [011] For this purpose, the invention relates to a device for cooling cylindrical electrochemical cells comprising:
- un support comportant des rangées de logements pour recevoir les cellules électrochimiques cylindriques,  a support comprising rows of housings for receiving the cylindrical electrochemical cells,
- au moins une poche de refroidissement positionnée entre deux rangées successives de cellules électrochimiques cylindriques, at least one cooling bag positioned between two successive rows of cylindrical electrochemical cells,
- des plaques de mousse conductrice thermique positionnées entre la poche et les cellules électrochimiques cylindriques,  thermal conductive foam plates positioned between the pocket and the cylindrical electrochemical cells,
caractérisé en ce qu'il comporte en outre un couvercle comportant des plaques de maintien s'étendant suivant l'axe des cellules électrochimiques cylindriques, ces plaques de maintien présentant une extrémité longitudinale en appui contre une paroi externe des cellules électrochimiques cylindriques et en ce que les plaques de maintien présentent une portion à pente progressive reliant deux portions d'épaisseur constante, de sorte que les plaques de mousse sont compressées progressivement entre les cellules électrochimiques cylindriques et la poche de refroidissement lors de la mise en place du couvercle sur le support. characterized in that it further comprises a cover comprising holding plates extending along the axis of the cylindrical electrochemical cells, these holding plates having a longitudinal end bearing against an outer wall of the cylindrical electrochemical cells and in that the holding plates have a portion with a progressive slope connecting two portions of constant thickness, so that the foam plates are gradually compressed between the cylindrical electrochemical cells and the cooling bag during the introduction of the cover on the support.
[012] Selon une réalisation, la portion à pente progressive de chaque plaque de maintien présente un angle de 10 à 20 degrés par rapport une paroi du couvercle. [012] In one embodiment, the gradual slope portion of each holding plate has an angle of 10 to 20 degrees relative to a wall of the lid.
[013] Selon une réalisation, le couvercle comporte une alternance d'un ensemble de deux plaques de maintien en forme de V et d'une plaque de maintien s'étendant perpendiculairement à la paroi. [013] In one embodiment, the cover comprises an alternation of a set of two V-shaped holding plates and a holding plate extending perpendicularly to the wall.
[014] Selon une réalisation, les deux plaques de maintien forment un angle de 90 ° entre elles. [014] In one embodiment, the two holding plates form an angle of 90 ° between them.
[015] Selon une réalisation, le couvercle est en appui contre les cellules électrochimiques cylindriques par l'intermédiaire de trois plaques de maintien par cellule électrochimique cylindrique. [015] In one embodiment, the cover bears against the cylindrical electrochemical cells by means of three holding plates per cylindrical electrochemical cell.
[016] Selon une réalisation, la poche de refroidissement est de forme ondulée, cette poche comportant sur deux faces opposées l'une par rapport à l'autre des creux ayant un rayon de courbure supérieur au rayon des cellules électrochimiques cylindriques et des bosses en alternance, ces bosses avançant à l'intérieur des espaces entre deux cellules électrochimiques cylindriques successives d'une même rangée de cellules électrochimiques cylindriques. [016] In one embodiment, the cooling bag is of corrugated shape, this pocket having on two opposite sides with respect to each other of the recesses having a radius of curvature greater than the radius of the cylindrical electrochemical cells and the bumps in alternation, these bumps advancing inside spaces between two successive cylindrical electrochemical cells of the same row of cylindrical electrochemical cells.
[017] Selon une réalisation, le support comporte des logements ayant sensiblement le même diamètre que les cellules électrochimiques cylindriques, ces logements comprenant un rebord annulaire contre lequel une face d'extrémité d'une cellule électrochimique cylindrique est en appui. [017] In one embodiment, the support comprises housing having substantially the same diameter as the cylindrical electrochemical cells, these housing comprising an annular flange against which an end face of a cylindrical electrochemical cell is supported.
[018] Selon une réalisation, les plaques de mousse conductrice thermique sont réalisées en fibre de verre. [019] BREVE DESCRIPTION DES FIGURES [018] In one embodiment, the thermal conductive foam plates are made of fiberglass. [019] BRIEF DESCRIPTION OF THE FIGURES
[020] L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Ces figures ne sont données qu'à titre illustratif mais nullement limitatif de l'invention. Elles montrent : [021] Figure 1 : une représentation schématique du dispositif de refroidissement de cellules électrochimiques cylindriques selon l'invention sans le couvercle ; [020] The invention will be better understood on reading the description which follows and the examination of the figures that accompany it. These figures are given for illustrative but not limiting of the invention. They show: [021] FIG. 1: a schematic representation of the cooling device of cylindrical electrochemical cells according to the invention without the cover;
[022] Figure 2 : une représentation schématique du support seul du dispositif de refroidissement selon l'invention ; [023] Figure 3 : une vue en coupe détaillée d'une poche entre deux rangées de cellules du dispositif selon l'invention ; [022] Figure 2: a schematic representation of the sole support of the cooling device according to the invention; [023] Figure 3: a detailed sectional view of a pocket between two rows of cells of the device according to the invention;
[024] Figure 4 : une représentation schématique du dispositif de refroidissement de cellules électrochimiques cylindriques selon l'invention sans le support avec les plaques de maintien représentées sans la pente progressive pour mieux visualiser leur implantation sur le couvercle ; [024] Figure 4: a schematic representation of the cylindrical electrochemical cell cooling device according to the invention without the support with the holding plates shown without the gradual slope to better visualize their implantation on the lid;
[025] Figures 5a-5b : des vues en coupe du dispositif de refroidissement selon l'invention représentant le couvercle lors de sa mise en place. [025] Figures 5a-5b: sectional views of the cooling device according to the invention representing the lid during its introduction.
[026] Les éléments identiques, similaires ou analogues conservent la même référence d'une figure à l'autre. [027] DESCRIPTION D'EXEMPLES DE REALISATION DE L'INVENTION [026] Identical, similar or similar elements retain the same reference from one figure to another. [027] DESCRIPTION OF EXEMPLARY EMBODIMENTS OF THE INVENTION
[028] Les Figures 1 et 4 montrent un dispositif 1 de refroidissement de cellules 2 électrochimiques cylindriques. Ce dispositif 1 comporte un support 10 comportant une rangée 141 , 142 de logements 1 1 pour recevoir les cellules 2, et au moins une poche 20 de refroidissement positionnée entre deux rangées 141 , 142 successives de cellules 2. Des plaques 40 de mousse conductrice thermique sont positionnées entre la poche 20 et les cellules 2. [029] Le dispositif 1 comporte en outre un couvercle 50 de forme telle que les plaques 40 de mousse sont compressées progressivement entre les cellules 2 électrochimiques cylindriques lors de la mise en place du couvercle 50 sur le support 10. [028] Figures 1 and 4 show a device 1 for cooling cylindrical electrochemical cells 2. This device 1 comprises a support 10 comprising a row 141, 142 of housing 1 1 to receive the cells 2, and at least one cooling bag 20 positioned between two successive rows 141, 142 of cells 2. Thermal conductive foam plates 40 are positioned between the pocket 20 and the cells 2. [029] The device 1 further comprises a lid 50 of such shape that the foam plates 40 are compressed progressively between the cylindrical electrochemical cells 2 when the lid 50 is put in place. on the support 10.
[030] Plus précisément, les cellules 2 cylindriques comportent des électrodes empilées et enroulées selon un axe X. Les électrodes sont protégées par une paroi 3 externe. Dans un exemple, la paroi 3 externe est en aluminium. Grâce à la géométrie cylindrique des cellules 2, la conduction thermique radiale est inférieure d'un rapport de cent à la conduction thermique axiale. Ceci limite la capacité de refroidissement radiale vers la paroi 3 externe. [030] More specifically, the cylindrical cells 2 comprise electrodes stacked and wound along an axis X. The electrodes are protected by an outer wall 3. In one example, the outer wall 3 is made of aluminum. Thanks to the cylindrical geometry of the cells 2, the radial thermal conduction is lower by a ratio of one hundred to the axial thermal conduction. This limits the radial cooling capacity to the outer wall 3.
[031] Cependant, la paroi 3 externe est la meilleure surface d'échange possible pour l'extraction de la chaleur générée lors du fonctionnement des cellules 2, dans la mesure où cette paroi 3 présente la plus grande surface. Les faces 4, 5 d'extrémité des cellules 2 sont utilisées par des bornes 6 électriques ainsi que par les dispositifs de dégazage des matières actives de la cellule 2 en cas de dysfonctionnement de la cellule 2 (dispositifs dits de « venting » en anglais). [031] However, the outer wall 3 is the best possible exchange surface for the extraction of the heat generated during operation of the cells 2, insofar as this wall 3 has the largest area. The end faces 4, 5 of the cells 2 are used by electrical terminals 6 as well as by the degassing devices of the active ingredients of the cell 2 in the event of a malfunction of the cell 2 (so-called "venting" devices). .
[032] Un support 10 recevant les cellules 2 de forme sensiblement parallélépipédique est montré en détails sur la Figure 2. Le support 10 permet le dégazage en cas de dysfonctionnement des cellules 2. En cela, le support 10 a, outre la fonction de maintien mécanique, celle de ségrégation du circuit de dégazage par rapport au reste du système. Les gaz liés au dégazage doivent être indépendants du reste du système pour des raisons de sécurité (cf. toxicité des gaz pouvant être mis en jeu). [032] A support 10 receiving the cells 2 of substantially parallelepiped shape is shown in detail in Figure 2. The support 10 allows degassing in case of malfunction of the cells 2. In this, the support 10 has, in addition to the maintenance function mechanical, the segregation of the degassing circuit relative to the rest of the system. Gases linked to Degassing must be independent of the rest of the system for safety reasons (see gas toxicity that may be involved).
[033] A cet effet, le support 10 comporte les logements 1 1 pour regrouper les cellules 2 en rangées 141 , 142. Ces logements 1 1 ont sensiblement le même diamètre DO que les cellules 2 et ces logements 1 1 comprennent un rebord annulaire 12 contre lequel une face 4 d'extrémité d'une cellule cylindrique 2 est en appui. [033] For this purpose, the support 10 comprises the housing 1 1 to group the cells 2 in rows 141, 142. These housings 1 1 have substantially the same diameter OD as the cells 2 and these housing 1 1 comprise an annular flange 12 against which an end face 4 of a cylindrical cell 2 is supported.
[034] Chaque rangée 141 de logements 1 1 est décalée suivant une direction DL longitudinale par rapport à la rangée 142 de logements 1 1 adjacente, de sorte que l'on puisse positionner la poche 20 de refroidissement entre deux rangées 141 , 142 de cellules 2 positionnées dans les logements 1 1 . [034] Each row 141 of housing 1 1 is shifted in a longitudinal direction DL relative to the row 142 of housing 1 1 adjacent, so that one can position the cooling bag 20 between two rows 141, 142 of cells 2 positioned in dwellings 1 1.
[035] Selon une réalisation, le diamètre D0 des logements 1 1 est compris entre 35 et 55 mm. La distance D1 entre chaque logement 1 1 d'une même rangée 141 , 142 est au minimum de 6 mm par exemple. Les deux rangées 141 , 142 successives présentent entre elles un décalage longitudinal D2 tel que les écarts entre la cellule d'une rangée et les deux cellules de la rangée voisine les plus proches soit identiques (triangle isocèle formé par les centres des trois cellules, voire équilatéral en fonction des espacements choisis, soit ici (55+6)/2 = 30.5 mm. Le calcul de cette distance se fait automatiquement à partir des deux données précédentes. Ce décalage longitudinal D2 correspond à la distance entre deux droites perpendiculaires à la direction DL longitudinale du support 10 et passant par l'axe de deux logements 1 1 successifs pris sur deux rangées 141 , 142 différentes. [035] In one embodiment, the diameter D0 of the housing 1 1 is between 35 and 55 mm. The distance D1 between each housing 1 1 of the same row 141, 142 is at least 6 mm for example. The two successive rows 141, 142 have between them a longitudinal shift D2 such that the differences between the cell of a row and the two cells of the nearest row are the same (isosceles triangle formed by the centers of the three cells, or equilateral according to the chosen spacings, here (55 + 6) / 2 = 30.5 mm The calculation of this distance is done automatically from the two preceding data This longitudinal offset D2 corresponds to the distance between two straight lines perpendicular to the direction DL longitudinal support 10 and passing through the axis of two successive housing 1 1 taken in two rows 141, 142 different.
[036] On note que les logements 1 1 permettent l'évacuation des gaz produits par les dispositifs de dégazage installés sur l'extrémité 4 des cellules 2. De préférence, le support 10 comporte des orifices 15 destinés à recevoir des plots 27 de la poche 20 pour faciliter le positionnement de la poche 20 entre les rangées 141 , 142 de cellules 2. [036] It is noted that the housing 1 1 allow the evacuation of gases produced by the degassing devices installed on the end 4 of the cells 2. Preferably, the support 10 has orifices 15 for receiving pads 27 of the pocket 20 to facilitate the positioning of the pocket 20 between the rows 141, 142 of cells 2.
[037] La Figure 3 montre une poche 20 comportant, sur deux faces 22, 23 opposées l'une par rapport à l'autre, des creux 24 ayant un rayon de courbure supérieur au rayon des cellules 2 et des bosses 25 en alternance. Les bosses 25 correspondent à la rencontre entre les extrémités des parois de la poche délimitant deux creux 24 successifs. Les bosses 25 sont destinées à avancer à l'intérieur des espaces entre deux cellules 2 successives d'une même rangée 141 , 142, ce qui permet de doubler la surface d'échange entre la poche 20 et les cellules 2. On prélève ainsi deux fois plus de chaleur des cellules 2 électrochimiques. [037] Figure 3 shows a pocket 20 having, on two faces 22, 23 opposite one another, recesses 24 having a radius of curvature greater than the radius of cells 2 and bumps 25 alternately. The bumps 25 correspond to the meeting between the ends of the walls of the pocket delimiting two successive recesses 24. The bumps 25 are intended to advance inside the spaces between two successive cells 2 of the same row 141, 142, which doubles the exchange surface between the pocket 20 and the cells 2. This takes two times more heat of electrochemical cells 2.
[038] A cet effet, deux bosses 25 successives et situées sur deux faces opposées 22, 23 de la poche présentent entre elles un décalage longitudinal D3 correspondant au décalage longitudinal D2 entre les logements 1 1 du support 10. Ce décalage longitudinal D3 correspond à la distance entre deux droites perpendiculaires à la direction DL longitudinale de la poche 20 passant par les sommets de bosses successives sur deux faces opposées 22, 23. Ainsi, le centre d'un creux 24 d'une des faces 22, 23 correspond au centre d'une bosse 25 de l'autre face 22, 23. Dans un exemple de réalisation, les bosses 25 présentent entre elles un décalage longitudinal de l'ordre de 30.5 mm. [038] For this purpose, two successive bumps 25 and located on two opposite faces 22, 23 of the pocket have between them a longitudinal shift D3 corresponding to the longitudinal offset D2 between the housing 1 1 of the support 10. This longitudinal offset D3 corresponds to the distance between two straight lines perpendicular to the longitudinal direction DL of the pocket 20 passing through the successive peaks of bumps on two opposite faces 22, 23. Thus, the center of a hollow 24 of one of the faces 22, 23 corresponds to the center a boss 25 of the other face 22, 23. In an exemplary embodiment, the bumps 25 have between them a longitudinal offset of the order of 30.5 mm.
[039] La géométrie de la poche 20 permet une accélération de l'écoulement dans les parties 26 les plus fines de la poche et un développement de tourbillons au niveau des bosses 25. Ces deux paramètres permettent d'augmenter le coefficient d'échange et donc d'augmenter la qualité du refroidissement. The geometry of the pocket 20 allows an acceleration of the flow in the thinnest portions 26 of the pocket and a development of vortices at the bumps 25. These two parameters make it possible to increase the exchange coefficient and therefore to increase the quality of cooling.
[040] Le positionnement de la poche 20 sur le support 10 s'effectue au moyen de plots 27 s'encastrant dans les orifices 15 de positionnement du support 10. La poche 20 est en matériau isolant électrique afin d'isoler électriquement les cellules 2 du liquide de refroidissement 21 qu'elle contient. Dans un exemple de réalisation, la poche 20 est en plastique. [040] The positioning of the pocket 20 on the support 10 is effected by means of pads 27 fitting into the positioning orifices 15 of the support 10. The pocket 20 is made of electrically insulating material to electrically isolate the cells 2 coolant 21 it contains. In an exemplary embodiment, the pocket 20 is made of plastic.
[041] Par ailleurs, des plaques 40 de mousse conductrice thermique sont prises en sandwich entre les cellules 2 et la poche 20. Par « pris en sandwich », on entend le fait que les plaques 40 sont compressées entre les cellules 2 et la paroi de poche 20. Les cellules 2 ayant un rayon inférieur au rayon de courbure des creux 24 de la poche 20, les plaques 40 assurent le contact entre les cellules 2 et la poche 20. Dans un exemple, les plaques 40 de mousse conductrice thermique sont réalisées en fibre de verre. Les plaques 40 sont de préférence collées dans les creux 24 de la poche 20. [041] Moreover, plates 40 of thermal conductive foam are sandwiched between the cells 2 and the pocket 20. By "sandwiched" is meant that the plates 40 are compressed between the cells 2 and the wall The cells 2 having a radius smaller than the radius of curvature of the recesses 24 of the pocket 20, the plates 40 ensure the contact between the cells 2 and the pocket 20. In one example, the plates 40 thermal conductive foam are made of fiberglass. The plates 40 are preferably glued in the recesses 24 of the pocket 20.
[042] On décrit maintenant dans le détail le couvercle 50 permettant d'isoler électriquement les cellules 2 des composants externes au dispositif 1 et de maintenir axialement et radialement les cellules 2. Ce couvercle 50 sert aussi de support à des composants électroniques externes au dispositif 1 et permet un accès direct aux bornes 6 des cellules 2 par le biais d'orifices (non représentés). [042] We now describe in detail the cover 50 for electrically isolating the cells 2 of the external components to the device 1 and to maintain the cells 2 axially and radially. This cover 50 also serves as a support for electronic components external to the device. 1 and allows direct access to the terminals 6 of the cells 2 through orifices (not shown).
[043] Le couvercle 50 présente une forme sensiblement parallélépipédique et est ouvert vers le support 10. Le couvercle 50 comporte une paroi principale 52 reliée par deux parois 53, 55 latérales opposées. Une fois le couvercle 50 mis en place, les extrémités des parois 53, 55 sont en contact avec le support 10 des cellules 2. [043] The cover 50 has a substantially parallelepipedal shape and is open towards the support 10. The cover 50 has a main wall 52 connected by two opposite walls 53, 55 opposite. Once the cover 50 has been put in place, the ends of the walls 53, 55 are in contact with the support 10 of the cells 2.
[044] Sur les deux parois 53, 55, le couvercle 50 comporte des plaques 61 -63 de maintien s'étendant suivant l'axe X des cellules 2. Ces plaques 61 - 63 présentent une extrémité longitudinale destinée à venir en appui contre la paroi externe des cellules 2. Les plaques 61 -63 ont pour but de plaquer les cellules 2 sur toute la surface de la plaque 40 conductrice thermique en contact avec la poche 20 dans la mesure où ces plaques 61 -63 sont, pour chaque creux de la plaque 40, à l'opposé de la partie extrême gauche, du centre et de la partie extrême droite de la plaque 40. [044] On both walls 53, 55, the cover 50 has holding plates 61 -63 extending along the axis X of the cells 2. These plates 61 - 63 have a longitudinal end intended to bear against the outer wall of the cells 2. The plates 61 -63 are intended to press the cells 2 over the entire surface of the thermal conductive plate 40 in contact with the pocket 20 to the extent that these plates 61 -63 are, for each depression of the plate 40, opposite the far left part, the center and the far right part of the plate 40.
[045] Chaque cellule 2 est maintenue par trois plaques 61 -63 (cf Figure 4). La première plaque 61 forme un angle droit avec la paroi 53, 55 portant ladite plaque 61 . La première plaque 61 est positionnée dans une zone où la distance entre la cellule 2 et la paroi 53, 55 est la plus petite. [045] Each cell 2 is held by three plates 61 -63 (see Figure 4). The first plate 61 forms a right angle with the wall 53, 55 carrying said plate 61. The first plate 61 is positioned in an area where the distance between the cell 2 and the wall 53, 55 is the smallest.
[046] La deuxième et la troisième plaques 62, 63 s'étendent vers les cellules 2 depuis une zone située au milieu de deux cellules 2 successives. Les plaques 62, 63 forment un angle de 45 degrés avec la paroi 53, 55. La deuxième plaque 62 et la troisième plaque 63 forment un ensemble en forme de V présentant un angle droit entre les deux plaques 62, 63. [047] Le couvercle 50 comporte ainsi une alternance d'un ensemble de deux plaques 62, 63 en forme de V et d'une plaque 61 s'étendant perpendiculairement à une paroi 53, 55. [046] The second and third plates 62, 63 extend towards the cells 2 from an area in the middle of two successive cells 2. The plates 62, 63 form an angle of 45 degrees with the wall 53, 55. The second plate 62 and the third plate 63 form a V-shaped assembly having a right angle between the two plates 62, 63. [047] The cover 50 thus comprises an alternation of a set of two V-shaped plates 62, 63 and a plate 61 extending perpendicularly to a wall 53, 55.
[048] La géométrie des plaques 61 -63 de maintien est montrée en détails sur les Figures 5a-5b. Les plaques 61 -63 de maintien comportent deux portions 64,66 d'épaisseur constante. La portion 66 comporte une épaisseur plus petite que la portion 64. Une portion 65 à pente progressive s'étend entre les deux portions 64, 66. La portion 65 à pente progressive présente un angle a par rapport à la paroi 53, 55. L'angle a est compris entre 10 et 20 degrés. [048] The geometry of the holding plates 61-63 is shown in detail in Figures 5a-5b. The holding plates 61 -63 comprise two portions 64, 66 of constant thickness. The portion 66 has a smaller thickness than the portion 64. A portion 65 with a progressive slope extends between the two portions 64, 66. The portion 65 with a gradual slope has an angle with respect to the wall 53, 55. L angle a is between 10 and 20 degrees.
[049] Cette géométrie des plaques 61 -63 de maintien permet de faciliter l'assemblage du dispositif 1 , notamment en compressant progressivement, grâce à la portion 65 à pente progressive, les plaques 40 de mousse entre les cellules 2 et la poche 20 lors de la mise en place du couvercle 50. [050] Lorsque le couvercle 50 est monté sur le support 10, le couvercle 50 s'oppose à un effort exercé par la plaque 40 de mousse compressée sur les cellules 2. [049] This geometry of the holding plates 61 -63 makes it possible to facilitate the assembly of the device 1, in particular by progressively compressing, thanks to the portion 65 with a progressive slope, the plates 40 of foam between the cells 2 and the pocket 20 when when the lid 50 is fitted. [050] When the lid 50 is mounted on the support 10, the lid 50 opposes a force exerted by the compressed foam plate 40 on the cells 2.
[051] Bien entendu, l'invention n'est pas limitée à un système à deux rangées 141 , 142 de cellules 2 et une poche 20. En effet, le dispositif 1 peut comporter plus de deux rangées 141 , 142 de cellules 2 et plus d'une poche 20 positionnée entre deux rangées 141 , 142 de cellules 2. Dans ce cas, si le dispositif 1 comporte N rangées de cellules, il comporte N-1 poches 20. [051] Of course, the invention is not limited to a two-row system 141, 142 of cells 2 and a pocket 20. In fact, the device 1 may comprise more than two rows 141, 142 of cells 2 and more than one pocket 20 positioned between two rows 141, 142 of cells 2. In this case, if the device 1 has N rows of cells, it comprises N-1 bags 20.

Claims

REVENDICATIONS
1 . Dispositif (1 ) de refroidissement de cellules (2) électrochimiques cylindriques comportant : 1. Device (1) for cooling cylindrical electrochemical cells (2) comprising:
- un support (10) comportant des rangées (141 , 142) de logements (1 1 ) pour recevoir les cellules (2) électrochimiques cylindriques, a support (10) comprising rows (141, 142) of housings (1 1) for receiving the cylindrical electrochemical cells (2),
- au moins une poche (20) de refroidissement positionnée entre deux rangées (141 , 142) successives de cellules (2) électrochimiques cylindriques, at least one cooling bag (20) positioned between two successive rows (141, 142) of cylindrical electrochemical cells (2),
- des plaques (40) de mousse conductrice thermique positionnées entre la poche (20) et les cellules (2) électrochimiques cylindriques, thermal conductive foam plates (40) positioned between the pocket (20) and the cylindrical electrochemical cells (2),
caractérisé en ce qu'il comporte en outre un couvercle (50) comportant des plaques (61 -63) de maintien s'étendant suivant l'axe (X) des cellules (2) électrochimiques cylindriques, ces plaques (61 -63) de maintien présentant une extrémité longitudinale en appui contre une paroi (3) externe des cellules (2) électrochimiques cylindriques et en ce que les plaques (61 -63) de maintien présentent une portion (65) à pente progressive reliant deux portions (64, 66) d'épaisseur constante, de sorte que les plaques (40) de mousse sont compressées progressivement entre les cellules (2) électrochimiques cylindriques et la poche (20) de refroidissement lors de la mise en place du couvercle (50) sur le support. characterized in that it further comprises a cover (50) having holding plates (61 -63) extending along the axis (X) of the cylindrical electrochemical cells (2), these plates (61 -63) of retaining having a longitudinal end bearing against an outer wall (3) of the cylindrical electrochemical cells (2) and in that the holding plates (61 -63) have a portion (65) with a progressive slope connecting two portions (64, 66 ) of constant thickness, so that the plates (40) of foam are gradually compressed between the cylindrical electrochemical cells (2) and the cooling bag (20) during the introduction of the cover (50) on the support.
2. Dispositif selon la revendication 1 , caractérisé en ce que la portion (65) à pente progressive de chaque plaque (61 -63) de maintien présente un angle (a) de 10 à 20 degrés par rapport une paroi (53, 55) du couvercle (50). 2. Device according to claim 1, characterized in that the portion (65) with a gradual slope of each plate (61 -63) maintains an angle (a) of 10 to 20 degrees relative to a wall (53, 55). cover (50).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le couvercle (50) comporte une alternance d'un ensemble de deux plaques (62, 63) de maintien en forme de V et d'une plaque (61 ) de maintien s'étendant perpendiculairement à la paroi (53, 55). 3. Device according to claim 1 or 2, characterized in that the cover (50) comprises an alternation of a set of two V-shaped holding plates (62, 63) and a holding plate (61). extending perpendicular to the wall (53, 55).
4. Dispositif selon la revendication 3, caractérisé en ce que les deux plaques (62, 63) de maintien forment un angle de 90° entre elles. 4. Device according to claim 3, characterized in that the two plates (62, 63) for maintaining an angle of 90 ° between them.
5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que le couvercle (50) est en appui contre les cellules (2) électrochimiques cylindriques par l'intermédiaire de trois plaques (61 -63) de maintien par cellule (2) électrochimique cylindrique. 5. Device according to claim 3 or 4, characterized in that the cover (50) bears against the cylindrical electrochemical cells (2) by via three holding plates (61 -63) per cylindrical electrochemical cell (2).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la poche (20) de refroidissement est de forme ondulée, cette poche (20) comportant sur deux faces (22, 23) opposées l'une par rapport à l'autre des creux (24) ayant un rayon de courbure supérieur au rayon des cellules (2) électrochimiques cylindriques et des bosses (25) en alternance, ces bosses (25) avançant à l'intérieur des espaces entre deux cellules (2) électrochimiques cylindriques successives d'une même rangée (141 , 142) de cellules (2) électrochimiques cylindriques. 6. Device according to one of claims 1 to 5, characterized in that the cooling bag (20) is of corrugated shape, this pocket (20) having on two faces (22, 23) opposite one with respect to the other hollow (24) having a radius of curvature greater than the radius of the cylindrical electrochemical cells (2) and bumps (25) alternately, these bumps (25) advancing inside the spaces between two cells (2) successive cylindrical electrochemicals of the same row (141, 142) of cylindrical electrochemical cells (2).
7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le support (10) comporte des logements (1 1 ) ayant sensiblement le même diamètre (D0) que les cellules (2) électrochimiques cylindriques, ces logements (1 1 ) comprenant un rebord annulaire (12) contre lequel une face (4) d'extrémité d'une cellule (2) électrochimique cylindrique est en appui. 7. Device according to one of claims 1 to 6, characterized in that the support (10) comprises housings (1 1) having substantially the same diameter (D0) as the cells (2) electrochemical cylindrical, these housing (1). 1) comprising an annular flange (12) against which an end face (4) of a cylindrical electrochemical cell (2) bears.
8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que les plaques (40) de mousse conductrice thermique sont réalisées en fibre de verre. 8. Device according to one of claims 1 to 7, characterized in that the plates (40) of thermal conductive foam are made of fiberglass.
PCT/FR2012/051260 2011-06-10 2012-06-06 Device for cooling cylindrical electrochemical cells WO2012168648A1 (en)

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FR3079970A1 (en) * 2018-04-06 2019-10-11 Valeo Systemes Thermiques ELECTRIC BATTERY MODULE
US11652254B2 (en) 2020-09-04 2023-05-16 Beta Air, Llc System and method for high energy density battery module
US11652255B2 (en) 2020-09-04 2023-05-16 Beta Air, Llc System and method for high energy density battery module
DE102021116605A1 (en) 2021-06-28 2022-12-29 Bayerische Motoren Werke Aktiengesellschaft Electrical energy store for a motor vehicle
US12119472B2 (en) 2021-12-10 2024-10-15 Wing Aviation Llc Active thermal control of UAV energy storage units

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FR2976408B1 (en) 2013-07-05

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