WO2024028033A1 - Device for clamping an energy storage element to a pedestal of an energy storage system - Google Patents

Device for clamping an energy storage element to a pedestal of an energy storage system Download PDF

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Publication number
WO2024028033A1
WO2024028033A1 PCT/EP2023/068555 EP2023068555W WO2024028033A1 WO 2024028033 A1 WO2024028033 A1 WO 2024028033A1 EP 2023068555 W EP2023068555 W EP 2023068555W WO 2024028033 A1 WO2024028033 A1 WO 2024028033A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy storage
storage element
elongated portion
base
elastic return
Prior art date
Application number
PCT/EP2023/068555
Other languages
French (fr)
Inventor
Sebastien Roudier
Original Assignee
Ampere S.A.S.
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 Ampere S.A.S. filed Critical Ampere S.A.S.
Publication of WO2024028033A1 publication Critical patent/WO2024028033A1/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
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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 device for maintaining an energy storage element on a base of an energy storage system.
  • the invention also relates to an energy storage system comprising such a device.
  • the invention also relates to a vehicle, in particular an automobile, comprising such a device and/or such an energy storage system.
  • Vehicles with electric or hybrid engines are equipped with an energy storage system or “battery pack” comprising electrochemical cells to provide electrical energy to an electric motor.
  • electrochemical cells are usually assembled in a module.
  • the modules are supported by a structure and connected to each other.
  • the aim of the invention is to provide a device and a method remedying the above drawbacks and improving the devices and methods known from the prior art.
  • the invention makes it possible to produce a device which is more reliable and space-saving and which has a reduced cost and a quick process to implement.
  • the invention relates to a device for maintaining an energy storage element on a base of an energy storage system, the device comprising an elongated portion, a locking means and an elastic return means , the blocking means being configured to apply pressure on an upper surface of the energy storage element, the elastic return means being intended to be arranged between the base and a lower surface of the energy storage element energy, the elongated portion being intended to extend at least partially between the lower surface and the upper surface of the energy storage element.
  • the device may further comprise a base intended to be arranged between the base and the lower surface of the energy storage element, the elongated portion extending at least partially between the base and the blocking means.
  • the elongated portion, the locking means and the elastic return means can be in the form of a single mechanical part.
  • the elongated portion, the blocking means and the elastic return means can be formed in a sheet, for example of a metallic material.
  • the elastic return means can be inserted into a housing of the base.
  • the elongated portion and the locking means can be in the form of a single mechanical part.
  • the device may further comprise a support portion, extending between the elongated portion and the base, the elongated portion being mounted in pivot connection on the support portion.
  • the elastic return means can be a leaf spring, for example made of steel.
  • the invention also relates to an energy storage system comprising at least one device as defined above for maintaining an energy storage element on a base of the energy storage system, the elongated portion of the at least one device being intended to extend along a side face of the energy storage element.
  • the energy storage system may in particular comprise a first device and a second device as defined above for maintaining an energy storage element on a base of the energy storage system, the elongated portion of the first device being intended to extend along a first side face of the energy storage element, and the elongated portion of the second device being intended to extend along a second side face of the energy storage element energy storage opposite the first side face.
  • the invention also relates to a vehicle, in particular an automobile, comprising a device as defined above and/or an energy storage system as defined above.
  • Figure 1 represents an energy storage system comprising a first embodiment of a device for maintaining an energy storage element on a base of an energy storage system.
  • Figure 2 represents an elastic return means of the device of Figure 1, before the installation of an energy storage element.
  • Figure 3 represents an elastic return means of the device of Figure 1, after the installation of an energy storage element.
  • Figure 4 represents an energy storage system comprising a second embodiment of a device for maintaining an energy storage element on a base of an energy storage system.
  • Figure 5 represents the device of Figure 4 before the installation of energy storage elements.
  • Figure 6 represents an elastic return means of the device of Figure 4, before the installation of an energy storage element, the elastic return means being in a rest state.
  • Figure 7 represents an elastic return means of the device of Figure 4, in a compressed state.
  • Figure 8 represents an elastic return means of the device of Figure 4, after the installation of an energy storage element, the elastic return means being in a compressed state.
  • Figure 9 represents an energy storage system comprising a third embodiment of a device for maintaining an energy storage element on a base of an energy storage system.
  • Figure 10 represents the device of Figure 9.
  • Figure 11 represents the device of Figure 9, before the installation of energy storage elements.
  • Figure 12 represents the device of Figure 9, the elongated portion of the device being at a distance from the energy storage element.
  • electrochemical cells are assembled in a module. From several cells, we form a module or assembly of cells. The cells are compressed together and surrounded by structural elements surrounding the entire module. The module is then mounted, in particular screwed, in the energy storage system.
  • the invention proposes a device making it possible to individually maintain an energy storage element, in particular a battery cell, directly in an energy storage system, or "battery pack", without going through the manufacture of modules. or cell assemblies.
  • XYZ a direct orthonormal coordinate system XYZ
  • the X axis designates the longitudinal direction of the energy storage system
  • the Y axis designates the transverse direction of the energy storage system
  • the Z axis designates a vertical direction, and is oriented upwards.
  • FIG. 1 An embodiment of a device 1 for maintaining an electrical energy storage element 3 on a base 2 of a “battery pack” 100, which can also be called “energy storage system ", is described below with reference to Figures 1 to 3.
  • Such an energy storage system 100 can be intended, by way of non-limiting example, for a vehicle 500, in particular a motor vehicle with hybrid or electric motor.
  • the X,Y plane is notably a horizontal plane when the vehicle rests on horizontal ground.
  • the energy storage element 3 may be an electrochemical cell for storing electrical energy, in particular a prismatic electrochemical cell.
  • the energy storage element 3 is capable of storing energy in chemical form and releasing it in the form of an electric current.
  • the energy storage element 3 can for example be of the “lithium- ion”, also called “Li-ion”, or any other type of cell capable of storing energy in electrochemical form.
  • the electrochemical cell can have a parallelepiped or substantially parallelepiped shape, in particular rectangular or square parallelepiped, or even cubic.
  • H the dimension of the energy storage element 3 along the Z axis.
  • the energy storage element 3 may comprise an upper surface 4 and a lower surface 5.
  • Connection terminals 8, 9 can be arranged on the upper surface 4 of the energy storage element 3.
  • the connection terminals 8, 9 are in particular connected to the electrodes of the energy storage element 3.
  • the device 1 comprises an elongated portion 11, a blocking means 13 and an elastic return means 17.
  • the elongated portion 11 extends in particular in the direction Z.
  • the elongated portion 11 has for example a length L along the Z axis and a width Wn along the Y axis.
  • the length L of the elongated portion 11 is for example substantially equal to the dimension H of the energy storage element 3.
  • the length L of the elongated portion 11 is slightly less than the dimension H of the energy storage element. energy storage 3. This results in compression of the energy storage element 3 by the device 1, in particular by the upper surface 4 of the energy storage element 3.
  • the device 1 may further comprise a base 16 intended to be fixed to the base 2.
  • the elongated portion 11 may extend between the base 16 and the locking means 13.
  • the base 16 is in particular intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
  • the base 16 can be fixed to the base 2 by welding or riveting or screwing or clipping or gluing, for example using an adhesive. Any fixing means can be used to fix the base 16 of the device 1 to the base
  • the base 16 has for example a width W along the Y axis.
  • the elastic return means 17 may be intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
  • the elongated portion 11 may be intended to extend between the lower surface 5 and the upper surface 4 of the energy storage element.
  • the elongated portion 11 is in particular intended to be arranged against a side face of the energy storage element 3.
  • side face of the energy storage element 3 is meant a face perpendicular or substantially perpendicular to the X axis.
  • the elongated portion 11, the locking means 13, the base 16 and the elastic return means 17 of the device 1 can be in the form of a single mechanical part.
  • the elongated portion 11, the locking means 13, the base 16 and the elastic return means 17 can be formed in a sheet, for example of a metallic material, for example of steel or aluminum.
  • the elongated portion 11, the locking means 13, the base 16 and the elastic return means 17 are for example formed in a metal strip, in particular cut.
  • the elongated portion 11 can be made of at least one elastically deformable material, for example of at least one metallic material, in particular of steel.
  • the material of the device 1, in particular of the elongated portion 11, can be chosen according to the flexibility desired for the elongated portion 11.
  • the elastic return means 17 can be produced by an offset of the plane of the sheet from which the device 1 is formed, relative to the plane of the base 16.
  • the base 16 extends in particular in the plane X, Y once the base 16 is fixed to the base 2.
  • the elastic return means 17 comprises for example a first portion 17a and a second portion 17b.
  • the first portion 17a extends in particular from the base 16 in a plane P1 forming an angle ai relative to the plane X, Y of the base 16, when the elastic return means 17 is in a rest state, in particular before the assembly of the energy storage element 3.
  • the second portion 17b can be slightly more inclined towards the base 2 than the first portion 17a.
  • the second portion 17b which is optional, is in particular intended to bear against the lower surface 5 of the energy storage element 3 once the energy storage element 3 is in place.
  • the distance along the axis Z between the end 17e of the elastic return means 17 and the bearing surface 14 of the blocking means 13 is less than the length L of the elongated portion 11 and/or the dimension H of the energy storage element 3.
  • the elastic return means 17 is intended to be compressed when an energy storage element 3 is put in place.
  • the blocking means 13 can be configured to apply pressure on the upper surface 4 of the energy storage element 3.
  • the blocking means 13 is intended to prevent any movement of the energy storage element 3, in particular to prevent translation of the energy storage element 3.
  • the blocking means 13 may comprise a support surface 14, in particular flat or substantially flat.
  • the support surface 14 extends in particular in the plane X, Y.
  • the support surface 14 is intended to bear against the upper surface 4 of the energy storage element 3.
  • the support surface 14 is intended to prevent translation of the energy storage element 3 .
  • the support surface 14 has for example a width W14 along the Y axis.
  • the respective widths Wn, W and W14 of the elongated portion 11, of the base 16 and of the support surface 14 may be equal or substantially equal.
  • the respective widths Wn, W and W14 of the elongated portion 11, of the base 16 and of the support surface 14 may be different.
  • the width Wn of the elongated portion 11 may be less than the width W of the base 16 and/or the width W14 of the support surface 14. This results in a reduced mass of such a device 1, and therefore a reduced mass of an energy storage system 100 comprising at least one such device 1.
  • the energy storage system 100 comprises seven energy storage elements 3.
  • the number of energy storage elements 3 could be any.
  • the elastic return means 17 Before the installation of an energy storage element 3 (figure 2), the elastic return means 17 is in a rest state.
  • the elastic return means 17 extends mainly in a plane P1 forming an angle ai relative to the plane X, Y in which the base 16 extends.
  • the elastic return means 17 After the installation of an energy storage element 3 (figure 3), the elastic return means 17 is compressed.
  • the first portion 17a of the elastic return means 17 extends for example in a plane P2 forming an angle "2 relative to the plane X, Y in which the base 16 extends.
  • the angle a is in particular less than the angle ai in the rest state.
  • the second portion 17b of the elastic return means 17 bears against the lower surface 5 of the energy storage element 3.
  • the difference between the distance along the Z axis between the end 17e of the elastic return means 17 and the bearing surface 14 of the blocking means 13 on the one hand and the length L of the elongated portion 11 and/or the dimension H of the energy storage element 3 on the other hand results in a pressure exerted by the bearing surface 14 of the blocking means 13 on the upper face 4 of the energy storage element 3.
  • the surface support 14 is pressed against the upper face 4 of the energy storage element 3.
  • the elastic return means 17 makes it possible to exert a vertical upward thrust. This results in a blocking of the energy storage element 3 in the Z direction.
  • the elastic return means 17 of the device 1 allows easy mounting of an energy storage element 3 in an energy storage system 100 and locking of the positioning of the energy storage element 3.
  • the energy storage system 100 may comprise several energy storage elements 3, for example several electrochemical cells for storing electrical energy, in particular several prismatic electrochemical cells.
  • the energy storage elements 3 can be positioned next to each other along the plane X, Y, a main face of an energy storage element 3 facing a main face of another storage element energy 3.
  • main face of an energy storage element 3 we mean a face perpendicular or substantially perpendicular to the Y axis.
  • a device 1 can be provided at least on one lateral side of the energy storage element 3.
  • the elongated portion 11 of the at least one device 1 extends in particular along a side face of the energy storage element 3.
  • a device 1 can be provided on each lateral side of the energy storage element 3. This results in optimum maintenance and locking of the positioning of the at least one energy storage element 3.
  • the energy storage system 100 may comprise a first device 1 and a second device 1 of the type described above for maintaining the energy storage element 3 on a base 2 of the energy storage system 100, the elongated portion 11 of the first device 1 being intended to extend along a first lateral face of the energy storage element 3, and the elongated portion 11 of the second device 1 being intended to extend along a second side face of the energy storage element 3 opposite the first side face.
  • FIG. 1 An embodiment of a device 30 for maintaining an energy storage element 3 on a base 2 of an energy storage system 200 is described below with reference to Figures 4 and 5.
  • Such energy storage system 200 can be intended, by way of non-limiting example, for a vehicle, in particular a motor vehicle with hybrid or electric motorization.
  • the device 30 comprises an elongated portion 31, a blocking means 33 and an elastic return means 37.
  • the elongated portion 31 extends in particular in the direction Z.
  • the elongated portion 31 has for example a length L along the Z axis and a width W31 along the Y axis.
  • the length L of the elongated portion 31 is for example substantially equal to the dimension H of the energy storage element 3.
  • the length L of the elongated portion 31 is slightly less than the dimension H of the energy storage element. energy storage 3. This results in compression of the energy storage element 3 by the device 30, in particular by the upper surface 4 of the energy storage element 3.
  • the elongated portion 31 may be intended to extend between the lower surface 5 and the upper surface 4 of the energy storage element 3.
  • the blocking means 33 can be configured to apply pressure on the upper surface 4 of the energy storage element 3.
  • the elastic return means 37 may be intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
  • the device 30 may further comprise a base 36 intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
  • the elongated portion 31 and the locking means 33 and possibly the base 36 of the device 30 can be in the form of a single mechanical part.
  • the base 36 is in particular intended to be fixed to the base 2.
  • the elongated portion 31 can extend between the base 36 and the locking means 33.
  • the base 36 can be fixed to the base 2 by welding or riveting or screwing or clipping or gluing, for example using an adhesive. Any fixing means can be used to fix the base 36 of the device 30 to the base 2.
  • the base 36 has for example a width W36 along the Y axis.
  • the elongated portion 31 can be made of at least one elastically deformable material, for example of at least one plastic material.
  • the material of the device 30, in particular of the elongated portion 31, can be chosen according to the flexibility desired for the elongated portion 31.
  • the elongated portion 31 may in particular be a deformable tongue.
  • the elastic return means 37 can be inserted into a housing 38 of the base 36.
  • the housing 38 of the base 36 is in particular delimited by a first rim 39 and a second rim 40 opposite the first rim 39.
  • the first rim 39 and the second rim 40 of the base 36 extend in particular in the direction X.
  • the first rim 39 and the second rim 40 each comprise a cavity configured to receive a respective end of the elastic return means 37.
  • the elastic return means 37 is for example a leaf spring, for example metallic, for example made of steel.
  • the blocking means 33 is intended to prevent any movement of the energy storage element 3, in particular to prevent translation of the energy storage element 3.
  • the blocking means 33 may comprise a support surface 34, in particular planar or substantially planar.
  • the support surface 34 extends in particular in the plane X, Y.
  • the bearing surface 34 is intended to bear against the upper surface 4 of the energy storage element 3.
  • the bearing surface 34 is intended to prevent translation of the energy storage element 3 .
  • the support surface 34 has for example a width W34 along the Y axis.
  • the respective widths W31, W36 and W34 of the elongated portion 31, of the base 36 and of the support surface 34 may be equal or substantially equal. According to a variant, the respective widths W31, W36 and W34 of the elongated portion 31, of the base 36 and of the support surface 34 may be different. For example, the width W31 of the elongated portion 31 may be less than the width W36 of the base 36 and/or the width W34 of the support surface 34. This results in a reduced mass of such a device 30, and therefore a reduced mass of an energy storage system 200 comprising at least one such device 30.
  • the blocking means 33 may have a solid shape, for example of a triangular section. According to a variant, the blocking means 33 could comprise a recess, for example triangular in shape. The recess could extend over the entire thickness e of the blocking means 33 or could extend partially on both sides of the blocking means 33 along the axis Y, with the interposition of a thin wall not comprising any obviously.
  • thickness e of the blocking means 33 we mean its dimension along the Y axis.
  • the elastic return means 37 Before the installation of an energy storage element 3 (figure 6), the elastic return means 37 is in a rest state.
  • the elastic return means 37 is arranged in a housing 38 of the base 36.
  • the housing 38 has a width adapted along the axis Y so that the respective ends of the elastic return means 37 are inserted in the first rim 39 and the second rim 40 of base 36.
  • the elastic return means 37 has a concave concavity shape facing the base 2 when the elastic return means 37 is in the housing 38.
  • h1 the distance between the portion of the elastic return means 37 furthest from the base 2 , in particular its middle portion, and the base 2, in the resting state.
  • the elastic return means 37 is guided in the cavities of the first rim 39 and the second rim 40 of the base 36.
  • the radius of curvature of the elastic return means 37 is greater than the radius of curvature of the elastic return means 37 in the rest state.
  • h2 the distance between the portion of the elastic return means 37 furthest from the base 2, in particular its middle portion, and the base 2, in the compressed state.
  • the difference between the dimensions h2 and h1 results in a pressure exerted by the support surface 34 of the blocking means 33 on the upper face 4 of the energy storage element 3.
  • the support surface 34 is pressed against the upper face 4 of the energy storage element 3.
  • the length of the elastic return means 37 is chosen in particular so as to obtain the desired pressure.
  • the elastic return means 37 makes it possible to exert a vertical upward thrust. This results in a blocking of the energy storage element 3 in the Z direction.
  • the elastic return means 37 of the device 30 allows easy mounting of an energy storage element 3 in an energy storage system 200 and locking of the positioning of the energy storage element 3.
  • the energy storage system 200 may comprise several energy storage elements 3, for example several electrochemical cells for storing electrical energy, in particular several prismatic electrochemical cells.
  • the energy storage elements 3 can be positioned next to each other along the plane X, Y, a main face of an energy storage element 3 facing a main face of another storage element energy 3.
  • a device 30 can be provided at least on one lateral side of the energy storage element 3.
  • the elongated portion 31 of the at least one device 30 extends in particular along a side face of the energy storage element 3.
  • a device 30 can be provided on each lateral side of the storage element. energy storage 3. This results in optimum maintenance and locking of the positioning of the at least one energy storage element 3.
  • the energy storage system 200 may comprise a first device 30 and a second device 30 of the type described above for maintaining the energy storage element 3 on a base 2 of the energy storage system 200, the elongated portion 31 of the first device 30 being intended to extend along a first lateral face of the energy storage element 3, and the elongated portion 31 of the second device 30 being intended to extend along a second side face of the energy storage element 3 opposite the first side face.
  • FIG. 10 An embodiment of a device 60 for maintaining an energy storage element 3 on a base 2 of an energy storage system 300 is described below with reference to Figures 9 to 12.
  • Such energy storage system 300 can be intended, by way of non-limiting example, for a vehicle, in particular a motor vehicle with hybrid or electric motorization.
  • the device 60 comprises an elongated portion 61, a blocking means 63 and an elastic return means 67.
  • the elongated portion 61 extends in particular in the direction Z.
  • the elongated portion 61 has for example a length L along the Z axis and a width Wei along the Y axis.
  • the device 60 may further comprise a base 66 intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
  • the base 66 is in particular intended to be fixed to the base 2.
  • the base 66 can be fixed to the base 2 by welding or riveting or screwing or clipping or gluing, for example by using an adhesive. Any fixing means can be used to fix the base 66 of the device 60 to the base 2.
  • the base 66 has for example a width Wee along the Y axis.
  • the elongated portion 61 and the locking means 63 can be in the form of a single mechanical part.
  • the elongated portion 61 and the locking means 63 can be made of at least one plastic or metallic material, for example steel or aluminum.
  • the device 60 may further comprise a support portion 71.
  • the support portion 71 can extend between the elongated portion 61 and the base 66.
  • the elongated portion 61 extends for example between the support portion 71 and the blocking means 63.
  • the elongated portion 61 may have main internal 61 i and external 61 e surfaces, or walls, which are flat or substantially flat.
  • main internal surface 61 i of the elongated portion 61 we mean the surface of the elongated portion 61 intended to face a side face of the energy storage element 3.
  • main external surface 61 e of the elongated portion 61 we mean the surface of the elongated portion 61 opposite the main internal surface 61 i, in particular parallel to the main internal surface 61 i.
  • the elongated portion 61 may comprise at least one rib, for example a median rib, in particular aligned along the main direction of elongation of the elongated portion 61. Such a rib makes it possible to provide stiffness to the elongated portion 61. This results in a resistance effect of the elongated portion 61.
  • Such a rib is intended to form a stiffening element of the elongated portion 61.
  • the elongated portion 61 may comprise several parallel ribs, in particular oriented along the main direction of elongation of the elongated portion 61.
  • the elongated portion 61 is mounted in pivot connection on the support portion 71.
  • the elongated portion 61 is movable between a first position aligned along the Z axis with the support portion 71 and a second position in which the main direction of elongation of the elongated portion 61 forms an angle 0 with the Z axis.
  • the support portion 71 and the elongated portion 61 are for example connected by an axis 73.
  • the axis 73 is in particular parallel or substantially parallel to the direction Y.
  • the support portion 71 may comprise tangles 72a, 72b, 72c, for example three tangles.
  • the elongated portion 61 may comprise tangles 61a, 61 b, for example two tangles.
  • the axis 73 is intended to be inserted in the tangles 72a, 72b, 72c of the support portion 71 and in the tangles 61 a, 61 b of the elongated portion 61, an entanglement of the elongated portion 61 being interposed between two tangles of the support portion 71.
  • the number of tangles 72a, 72b, 72c of the support portion 71 and the number of tangles 61 a, 61 b of the elongated portion 61 may vary.
  • the position of the pivot link along the Z axis may vary.
  • L71 the dimension of the support portion 71 along the Z axis.
  • H the dimension of the energy storage element 3 along the Z axis.
  • the sum of the length L of the elongated portion 11 and the dimension L71 of the support portion 71 is for example substantially equal to the dimension H of the energy storage element 3.
  • the sum of the length L of the elongated portion 11 and the dimension L71 of the support portion 71 is slightly less than the dimension H of the energy storage element 3. This results in a compression of the energy storage element 3 by the device 60, in particular by the upper surface 4 of the energy storage element 3.
  • the ratio between the dimension L71 of the support portion 71 and length L of the elongated portion 11 may vary.
  • the pivot connection between the elongated portion 61 and the support portion 71 may be located at another location along the Z axis.
  • the position of the pivot along the Z axis may in particular be chosen according to space considerations, depending in particular on the targeted applications.
  • the elongated portion 61 may be intended to extend between the upper surface 4 of the energy storage element 3 and the support portion 71, when the elongated portion 61 is in the first position.
  • the support portion 71 can be made of at least one plastic or metallic material, for example steel or aluminum.
  • the blocking means 63 can be configured to apply pressure on the upper surface 4 of the energy storage element 3.
  • the elastic return means 67 may be intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
  • the elastic return means 67 can be inserted into a housing 68 of the base 66.
  • the housing 68 of the base 66 is in particular delimited by a first rim 69 and a second rim 70 opposite the first rim 69.
  • the first rim 69 and the second rim 70 of the base 66 extend in particular in the direction X.
  • the first rim 69 and the second rim 70 each comprise a cavity configured to receive a respective end of the elastic return means 67.
  • the housing 68 has a width adapted along the Y axis so that the respective ends of the elastic return means 67 are inserted in the first rim 69 and the second rim 70 of the base 66.
  • the elastic return means 67 is for example a leaf spring, for example metallic, for example made of steel.
  • the blocking means 63 is intended to prevent any movement of the energy storage element 3, in particular to avoid translation of the energy storage element 3.
  • the blocking means 63 may comprise a support surface 64, in particular planar or substantially planar.
  • the support surface 64 extends in particular in the plane X, Y.
  • the support surface 64 is intended to bear against the upper surface 4 of the energy storage element 3.
  • the support surface 64 is intended to prevent translation of the energy storage element 3 .
  • the support surface 64 has for example a width W64 along the Y axis.
  • the respective widths Wei, Wee and W64 of the elongated portion 61, of the base 66 and of the support surface 64 may be equal or substantially equal. According to a variant, the respective widths Wd, Wee and We4 of the elongated portion 61, of the base 66 and of the support surface 64 may be different. For example, the width Wd of the elongated portion 61 may be less than the width Wee of the base 66 and/or the width We4 of the support surface 64. This results in a reduced mass of such a device 60, and therefore a reduced mass of an energy storage system 300 comprising at least one such device 60.
  • the blocking means 63 may have a solid shape, for example a triangular section. According to a variant, the blocking means 63 could comprise a recess, for example triangular in shape. The recess could extend over the entire thickness e of the blocking means 63 or could extend partially on both sides of the blocking means 63 along the axis Y, with the interposition of a thin wall not comprising any obviously.
  • thickness e of the blocking means 63 we mean its dimension along the Y axis.
  • a mode of execution of a method of mounting at least one energy storage element 3 in an energy storage system 300 comprising at least one device 60 of the type described above is described below.
  • the elongated portion 61 is pivoted around the axis 73, so as to move the elongated portion 61 from the first position to the second position.
  • the at least one energy storage element 3 is placed on the base 2, with the interposition of the elastic return means 67.
  • the elastic return means 67 is in a rest state.
  • the elastic return means 67 is located in the housing 68 of the base 66.
  • the elongated portion 61 is pivoted around the axis 73, so as to move the elongated portion 61 from the second position to the first position.
  • the elongated portion 61 of the device 60 which was spaced from the side face of the energy storage element 3 in the second position, extends in the first position along the side face of the storage element d energy 3, in particular in contact with the side face of the energy storage element 3.
  • the bearing surface 64 of the blocking means 63 bears against the upper surface 4 of the energy storage element 3.
  • a clipping effect is obtained from the device 60.
  • the elastic return means 67 is compressed.
  • the elastic return means 67 is guided in the cavities of the first rim 69 and the second rim 70 of the base 66 during the passage of the elongated portion 61 from the second position to the first position.
  • the elastic return means 67 makes it possible to exert a vertical upward thrust. This results in a blocking of the energy storage element 3 in the Z direction.
  • the elastic return means 67 of the device 60 allows easy assembly of an energy storage element 3 in a system energy storage element 300 and locking the positioning of the energy storage element 3.
  • the energy storage system 300 may comprise several energy storage elements 3, for example several electrochemical cells for storing electrical energy, in particular several prismatic electrochemical cells.
  • the energy storage elements 3 can be positioned next to each other along the plane X, Y, a main face of an energy storage element 3 facing a main face of another storage element energy 3.
  • a device 60 can be provided at least on one lateral side of the energy storage element 3.
  • the elongated portion 61 of the at least one device 60 extends in particular along a side face of the energy storage element 3 in the first position of the elongated portion 61.
  • a device 60 can be provided on each lateral side of the energy storage element 3. This results in optimum maintenance and locking of the positioning of the at least one energy storage element 3 on each lateral side of the energy storage element 3.
  • the energy storage system 300 may comprise a first device 60 and a second device 60 of the type described above for maintaining the energy storage element 3 on a base 2 of the energy storage system 300, the elongated portion 61 of the first device 30 being intended to extend along a first lateral face of the energy storage element 3 in the first position of the elongated portion 61, and the elongated portion 61 of the second device 60 being intended to extend along a second lateral face of the energy storage element 3 opposite the first side face in the first position of the elongated portion 61.
  • the dimension H of the at least one energy storage element 3 may vary due to manufacturing dispersion.
  • a device 1, 30, 60 of the type of those described above allows optimum maintenance and locking of the positioning of the at least one energy storage element 3, even in the event of variations in the dimension H of the at least one energy storage element 3.
  • the upper surface 4 of the at least one energy storage element 3 may comprise a rim, in particular in the form of an excrescence or having a slope relative to the plane X, Y.
  • a complementary shape can be provided in the support surface 14, 34, 64 of the blocking means 13, 33, 63. This results in an increased pressure effect and further optimized locking of the positioning of the at least one element of energy storage 3.
  • An advantage of a device of the type described above is linked to the fact that the energy storage elements can be placed in position directly in an energy storage system without going through an intermediate step of creating a module assembling the energy storage elements. This results in a reduced manufacturing cost of an energy storage system, a reduced assembly time of an energy storage system and a reduced footprint of an energy storage system.
  • An advantage of a device of the type described above is linked to the fact that the number of mechanical parts of an energy storage system is reduced. This results in a reduced size and mass of an energy storage system.
  • the invention has been described in the case where the device is intended for maintaining an energy storage element, for example a prismatic cell, on a base of an energy storage system, the invention could also apply to energy storage elements other than prismatic cells, for example to micromodules comprising, for example, cylindrical cells.
  • the invention has been described in the case of a battery for a motor vehicle, the invention applies to all areas in which it is required to be able to place energy storage elements directly in the energy storage systems, for example for stationary residential battery packs intended for large energy storage.

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Abstract

The invention relates to a device (1; 30; 60) for clamping an energy storage element (3) to a pedestal (2), the device comprising an elongate portion (11; 31; 61), a locking means (13; 33; 63) and a spring-back means (17; 37; 67), the locking means (13; 33; 63) being configured to apply pressure to an upper surface (4) of the energy storage element (3), the spring-back means (17; 37; 67) being intended to be arranged between the pedestal (2) and a lower surface (5) of the energy storage element (3), the elongate portion (11; 31; 61) being intended to extend between the lower surface (5) and the upper surface (4).

Description

Dispositif pour le maintien d’un élément de stockage d’énergie sur un socle d’un système de stockage d’énergie. Device for maintaining an energy storage element on a base of an energy storage system.
L’invention concerne un dispositif pour le maintien d’un élément de stockage d’énergie sur un socle d’un système de stockage d’énergie. L’invention porte aussi sur un système de stockage d’énergie comprenant un tel dispositif. L’invention porte encore sur un véhicule, notamment automobile, comprenant un tel dispositif et/ou un tel système de stockage d’énergie. The invention relates to a device for maintaining an energy storage element on a base of an energy storage system. The invention also relates to an energy storage system comprising such a device. The invention also relates to a vehicle, in particular an automobile, comprising such a device and/or such an energy storage system.
Les véhicules à motorisation électrique ou hybride sont pourvus d’un système de stockage d’énergie ou « pack batterie » comprenant des cellules électrochimiques pour fournir de l’énergie électrique à un moteur électrique. Vehicles with electric or hybrid engines are equipped with an energy storage system or “battery pack” comprising electrochemical cells to provide electrical energy to an electric motor.
Dans un tel système de stockage d’énergie, plusieurs cellules électrochimiques sont habituellement assemblées dans un module. Les modules sont supportés par une structure et reliés entre eux. In such an energy storage system, several electrochemical cells are usually assembled in a module. The modules are supported by a structure and connected to each other.
On connaît des assemblages de cellules comprenant des éléments de clipsage pour retenir les cellules, comme dans le document US10468644. Cell assemblies comprising clipping elements to retain the cells are known, as in document US10468644.
Toutefois, les solutions existantes présentent des inconvénients. En particulier, à cause des dispersions lors de la fabrication des cellules, la hauteur des différentes cellules varie et les cellules ne sont pas bien bloquées selon la direction verticale par les éléments de clipsage. However, existing solutions have drawbacks. In particular, because of dispersions during the manufacture of the cells, the height of the different cells varies and the cells are not well blocked in the vertical direction by the clipping elements.
Le but de l’invention est de fournir un dispositif et un procédé remédiant aux inconvénients ci-dessus et améliorant les dispositifs et procédés connus de l’art antérieur. En particulier, l’invention permet de réaliser un dispositif qui soit plus fiable et peu encombrant et qui présente un coût réduit et un procédé rapide à mettre en œuvre. The aim of the invention is to provide a device and a method remedying the above drawbacks and improving the devices and methods known from the prior art. In particular, the invention makes it possible to produce a device which is more reliable and space-saving and which has a reduced cost and a quick process to implement.
L'invention se rapporte à un dispositif pour le maintien d’un élément de stockage d’énergie sur un socle d’un système de stockage d’énergie, le dispositif comprenant une portion allongée, un moyen de blocage et un moyen de rappel élastique, le moyen de blocage étant configuré pour appliquer une pression sur une surface supérieure de l’élément de stockage d’énergie, le moyen de rappel élastique étant destiné à être agencé entre le socle et une surface inférieure de l’élément de stockage d’énergie, la portion allongée étant destinée à s’étendre au moins partiellement entre la surface inférieure et la surface supérieure de l’élément de stockage d’énergie. The invention relates to a device for maintaining an energy storage element on a base of an energy storage system, the device comprising an elongated portion, a locking means and an elastic return means , the blocking means being configured to apply pressure on an upper surface of the energy storage element, the elastic return means being intended to be arranged between the base and a lower surface of the energy storage element energy, the elongated portion being intended to extend at least partially between the lower surface and the upper surface of the energy storage element.
Le dispositif peut en outre comprendre une base destinée à être agencée entre le socle et la surface inférieure de l’élément de stockage d’énergie, la portion allongée s’étendant au moins partiellement entre la base et le moyen de blocage. The device may further comprise a base intended to be arranged between the base and the lower surface of the energy storage element, the elongated portion extending at least partially between the base and the blocking means.
La portion allongée, le moyen de blocage et le moyen de rappel élastique peuvent être sous la forme d’une seule pièce mécanique. The elongated portion, the locking means and the elastic return means can be in the form of a single mechanical part.
La portion allongée, le moyen de blocage et le moyen de rappel élastique peuvent être formés dans une feuille, par exemple en matériau métallique. The elongated portion, the blocking means and the elastic return means can be formed in a sheet, for example of a metallic material.
Le moyen de rappel élastique peut être inséré dans un logement de la base. The elastic return means can be inserted into a housing of the base.
La portion allongée et le moyen de blocage peuvent être sous la forme d’une seule pièce mécanique. Le dispositif peut en outre comprendre une portion support, s’étendant entre la portion allongée et la base, la portion allongée étant montée en liaison pivot sur la portion support. The elongated portion and the locking means can be in the form of a single mechanical part. The device may further comprise a support portion, extending between the elongated portion and the base, the elongated portion being mounted in pivot connection on the support portion.
Le moyen de rappel élastique peut être une lame ressort, par exemple en un acier. The elastic return means can be a leaf spring, for example made of steel.
L'invention se rapporte également à un système de stockage d’énergie comprenant au moins un dispositif tel que défini précédemment pour le maintien d’un élément de stockage d’énergie sur un socle du système de stockage d’énergie, la portion allongée de l’au moins un dispositif étant destinée à s’étendre le long d’une face latérale de l’élément de stockage d’énergie. The invention also relates to an energy storage system comprising at least one device as defined above for maintaining an energy storage element on a base of the energy storage system, the elongated portion of the at least one device being intended to extend along a side face of the energy storage element.
Le système de stockage d’énergie peut notamment comprendre un premier dispositif et un deuxième dispositif tel que définis précédemment pour le maintien d’un élément de stockage d’énergie sur un socle du système de stockage d’énergie, la portion allongée du premier dispositif étant destinée à s’étendre le long d’une première face latérale de l’élément de stockage d’énergie, et la portion allongée du deuxième dispositif étant destinée à s’étendre le long d’une deuxième face latérale de l’élément de stockage d’énergie opposée à la première face latérale. The energy storage system may in particular comprise a first device and a second device as defined above for maintaining an energy storage element on a base of the energy storage system, the elongated portion of the first device being intended to extend along a first side face of the energy storage element, and the elongated portion of the second device being intended to extend along a second side face of the energy storage element energy storage opposite the first side face.
L'invention se rapporte également à un véhicule, notamment automobile, comprenant un dispositif tel que défini précédemment et/ou un système de stockage d’énergie tel que défini précédemment. The invention also relates to a vehicle, in particular an automobile, comprising a device as defined above and/or an energy storage system as defined above.
Les dessins annexés représentent, à titre d’exemple, un mode de réalisation d’un dispositif selon l’invention et un mode d’exécution d’un procédé selon l’invention. La figure 1 représente un système de stockage d’énergie comprenant un premier mode de réalisation d’un dispositif pour le maintien d’un élément de stockage d’énergie sur un socle d’un système de stockage d’énergie.The appended drawings represent, by way of example, an embodiment of a device according to the invention and an embodiment of a method according to the invention. Figure 1 represents an energy storage system comprising a first embodiment of a device for maintaining an energy storage element on a base of an energy storage system.
La figure 2 représente un moyen de rappel élastique du dispositif de la figure 1 , avant la mise en place d’un élément de stockage d’énergie. Figure 2 represents an elastic return means of the device of Figure 1, before the installation of an energy storage element.
La figure 3 représente un moyen de rappel élastique du dispositif de la figure 1 , après la mise en place d’un élément de stockage d’énergie.Figure 3 represents an elastic return means of the device of Figure 1, after the installation of an energy storage element.
La figure 4 représente un système de stockage d’énergie comprenant un deuxième mode de réalisation d’un dispositif pour le maintien d’un élément de stockage d’énergie sur un socle d’un système de stockage d’énergie.Figure 4 represents an energy storage system comprising a second embodiment of a device for maintaining an energy storage element on a base of an energy storage system.
La figure 5 représente le dispositif de la figure 4 avant la mise en place d’éléments de stockage d’énergie. Figure 5 represents the device of Figure 4 before the installation of energy storage elements.
La figure 6 représente un moyen de rappel élastique du dispositif de la figure 4, avant la mise en place d’un élément de stockage d’énergie, le moyen de rappel élastique étant dans un état de repos. Figure 6 represents an elastic return means of the device of Figure 4, before the installation of an energy storage element, the elastic return means being in a rest state.
La figure 7 représente un moyen de rappel élastique du dispositif de la figure 4, dans un état comprimé. Figure 7 represents an elastic return means of the device of Figure 4, in a compressed state.
La figure 8 représente un moyen de rappel élastique du dispositif de la figure 4, après la mise en place d’un élément de stockage d’énergie, le moyen de rappel élastique étant dans un état comprimé. Figure 8 represents an elastic return means of the device of Figure 4, after the installation of an energy storage element, the elastic return means being in a compressed state.
La figure 9 représente un système de stockage d’énergie comprenant un troisième mode de réalisation d’un dispositif pour le maintien d’un élément de stockage d’énergie sur un socle d’un système de stockage d’énergie. La figure 10 représente le dispositif de la figure 9. Figure 9 represents an energy storage system comprising a third embodiment of a device for maintaining an energy storage element on a base of an energy storage system. Figure 10 represents the device of Figure 9.
La figure 11 représente le dispositif de la figure 9, avant la mise en place d’éléments de stockage d’énergie. Figure 11 represents the device of Figure 9, before the installation of energy storage elements.
La figure 12 représente le dispositif de la figure 9, la portion allongée du dispositif étant à distance de l’élément de stockage d’énergie. Figure 12 represents the device of Figure 9, the elongated portion of the device being at a distance from the energy storage element.
Dans des systèmes de stockage d’énergie habituellement utilisés, plusieurs cellules électrochimiques sont assemblées dans un module. A partir de plusieurs cellules, on forme un module ou assemblage de cellules. Les cellules sont comprimées entre elles et entourées par des éléments de structure entourant tout le module. Le module est ensuite monté, notamment vissé, dans le système de stockage d’énergie. In commonly used energy storage systems, several electrochemical cells are assembled in a module. From several cells, we form a module or assembly of cells. The cells are compressed together and surrounded by structural elements surrounding the entire module. The module is then mounted, in particular screwed, in the energy storage system.
L’invention propose un dispositif permettant de maintenir individuellement un élément de stockage d’énergie, notamment une cellule de batterie, directement dans un système de stockage d’énergie, ou « pack batterie », sans passer par l'intermédiaire de fabrication de modules ou assemblages de cellules. The invention proposes a device making it possible to individually maintain an energy storage element, in particular a battery cell, directly in an energy storage system, or "battery pack", without going through the manufacture of modules. or cell assemblies.
On se référera à un repère orthonormé direct XYZ, dans lequel l’axe X désigne la direction longitudinale du système de stockage d’énergie, l’axe Y désigne la direction transversale du système de stockage d’énergie, l’axe Z désigne une direction verticale, et est orienté vers le haut. We will refer to a direct orthonormal coordinate system XYZ, in which the X axis designates the longitudinal direction of the energy storage system, the Y axis designates the transverse direction of the energy storage system, the Z axis designates a vertical direction, and is oriented upwards.
Un mode de réalisation d’un dispositif 1 pour le maintien d’un élément de stockage d’énergie électrique 3 sur un socle 2 d’un « pack batterie » 100, que l’on pourra également dénommer « système de stockage d’énergie », est décrit ci-après en référence aux figures 1 à 3. Un tel système de stockage d’énergie 100 peut être destiné, à titre d’exemple non limitatif, à un véhicule 500, notamment un véhicule automobile à motorisation hybride ou électrique. Le plan X,Y est notamment un plan horizontal lorsque le véhicule repose sur un sol horizontal. An embodiment of a device 1 for maintaining an electrical energy storage element 3 on a base 2 of a “battery pack” 100, which can also be called “energy storage system ", is described below with reference to Figures 1 to 3. Such an energy storage system 100 can be intended, by way of non-limiting example, for a vehicle 500, in particular a motor vehicle with hybrid or electric motor. . The X,Y plane is notably a horizontal plane when the vehicle rests on horizontal ground.
L’élément de stockage d’énergie 3 peut être une cellule électrochimique de stockage d’énergie électrique, notamment une cellule électrochimique prismatique. The energy storage element 3 may be an electrochemical cell for storing electrical energy, in particular a prismatic electrochemical cell.
L’élément de stockage d’énergie 3 est apte à stocker de l’énergie sous forme chimique et à la restituer sous forme d’un courant électrique. L’élément de stockage d’énergie 3 peut par exemple être du type « lithium- ion », aussi appelé « Li-ion », ou de tout autre type de cellule capable de stocker de l’énergie sous forme électrochimique. The energy storage element 3 is capable of storing energy in chemical form and releasing it in the form of an electric current. The energy storage element 3 can for example be of the “lithium- ion", also called "Li-ion", or any other type of cell capable of storing energy in electrochemical form.
Par « prismatique », on entend que la cellule électrochimique peut présenter une forme parallélépipédique ou sensiblement parallélépipédique, notamment parallélépipédique rectangle ou carré, voire cubique. By “prismatic”, we mean that the electrochemical cell can have a parallelepiped or substantially parallelepiped shape, in particular rectangular or square parallelepiped, or even cubic.
On appelle H la dimension de l’élément de stockage d’énergie 3 selon l’axe Z. We call H the dimension of the energy storage element 3 along the Z axis.
L’élément de stockage d’énergie 3 peut comprendre une surface supérieure 4 et une surface inférieure 5. The energy storage element 3 may comprise an upper surface 4 and a lower surface 5.
Des bornes de connexion 8, 9 peuvent être agencées sur la surface supérieure 4 de l’élément de stockage d’énergie 3. Les bornes de connexion 8, 9 sont notamment reliées aux électrodes de l’élément de stockage d’énergie 3. Connection terminals 8, 9 can be arranged on the upper surface 4 of the energy storage element 3. The connection terminals 8, 9 are in particular connected to the electrodes of the energy storage element 3.
Le dispositif 1 comprend une portion allongée 11 , un moyen de blocage 13 et un moyen de rappel élastique 17. The device 1 comprises an elongated portion 11, a blocking means 13 and an elastic return means 17.
La portion allongée 11 s’étend notamment selon la direction Z. The elongated portion 11 extends in particular in the direction Z.
La portion allongée 11 présente par exemple une longueur L selon l’axe Z et une largeur Wn selon l’axe Y. The elongated portion 11 has for example a length L along the Z axis and a width Wn along the Y axis.
La longueur L de la portion allongée 11 est par exemple sensiblement égale à la dimension H de l’élément de stockage d’énergie 3. Avantageusement, la longueur L de la portion allongée 11 est légèrement inférieure à la dimension H de l’élément de stockage d’énergie 3. Il en résulte une mise en compression de l’élément de stockage d’énergie 3 par le dispositif 1 , notamment par la surface supérieure 4 de l’élément de stockage d’énergie 3. The length L of the elongated portion 11 is for example substantially equal to the dimension H of the energy storage element 3. Advantageously, the length L of the elongated portion 11 is slightly less than the dimension H of the energy storage element. energy storage 3. This results in compression of the energy storage element 3 by the device 1, in particular by the upper surface 4 of the energy storage element 3.
Le dispositif 1 peut comprendre en outre une base 16 destinée à être fixée au socle 2. La portion allongée 11 peut s’étendre entre la base 16 et le moyen de blocage 13. The device 1 may further comprise a base 16 intended to be fixed to the base 2. The elongated portion 11 may extend between the base 16 and the locking means 13.
La base 16 est notamment destinée à être agencée entre le socle 2 et la surface inférieure 5 de l’élément de stockage d’énergie 3. The base 16 is in particular intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
La base 16 peut être fixée au socle 2 par soudage ou rivetage ou vissage ou clippage ou collage, par exemple en utilisant un adhésif. Tout moyen de fixation pourra être utilisé pour fixer la base 16 du dispositif 1 au socleThe base 16 can be fixed to the base 2 by welding or riveting or screwing or clipping or gluing, for example using an adhesive. Any fixing means can be used to fix the base 16 of the device 1 to the base
2. 2.
La base 16 présente par exemple une largeur W selon l’axe Y. The base 16 has for example a width W along the Y axis.
Le moyen de rappel élastique 17 peut être destiné à être agencé entre le socle 2 et la surface inférieure 5 de l’élément de stockage d’énergie 3. The elastic return means 17 may be intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
La portion allongée 11 peut être destinée à s’étendre entre la surface inférieure 5 et la surface supérieure 4 de l’élément de stockage d’énergieThe elongated portion 11 may be intended to extend between the lower surface 5 and the upper surface 4 of the energy storage element.
3. 3.
La portion allongée 11 est notamment destinée à être agencée contre une face latérale de l’élément de stockage d’énergie 3. Par face latérale de l’élément de stockage d’énergie 3, on entend une face perpendiculaire ou sensiblement perpendiculaire à l’axe X. The elongated portion 11 is in particular intended to be arranged against a side face of the energy storage element 3. By side face of the energy storage element 3 is meant a face perpendicular or substantially perpendicular to the X axis.
Avantageusement, la portion allongée 11 , le moyen de blocage 13, la base 16 et le moyen de rappel élastique 17 du dispositif 1 peuvent être sous la forme d’une seule pièce mécanique. La portion allongée 11 , le moyen de blocage 13, la base 16 et le moyen de rappel élastique 17 peuvent être formés dans une feuille, par exemple en matériau métallique, par exemple en acier ou en aluminium. Advantageously, the elongated portion 11, the locking means 13, the base 16 and the elastic return means 17 of the device 1 can be in the form of a single mechanical part. The elongated portion 11, the locking means 13, the base 16 and the elastic return means 17 can be formed in a sheet, for example of a metallic material, for example of steel or aluminum.
La portion allongée 11 , le moyen de blocage 13, la base 16 et le moyen de rappel élastique 17 sont par exemple formés dans un feuillard métallique, notamment découpé. The elongated portion 11, the locking means 13, the base 16 and the elastic return means 17 are for example formed in a metal strip, in particular cut.
La portion allongée 11 peut être en au moins un matériau élastiquement déformable, par exemple en au moins un matériau métallique, notamment en un acier. The elongated portion 11 can be made of at least one elastically deformable material, for example of at least one metallic material, in particular of steel.
Le matériau du dispositif 1 , notamment de la portion allongée 11 , pourra être choisi en fonction de la souplesse souhaitée pour la portion allongée 11. The material of the device 1, in particular of the elongated portion 11, can be chosen according to the flexibility desired for the elongated portion 11.
Le moyen de rappel élastique 17 peut être réalisé par un décalage du plan de la feuille à partir de laquelle est formé le dispositif 1 , par rapport au plan de la base 16. The elastic return means 17 can be produced by an offset of the plane of the sheet from which the device 1 is formed, relative to the plane of the base 16.
La base 16 s’étend notamment dans le plan X, Y une fois que la base 16 est fixée au socle 2. Le moyen de rappel élastique 17 comprend par exemple une première portion 17a et une deuxième portion 17b. La première portion 17a s’étend notamment à partir de la base 16 dans un plan P1 formant un angle ai par rapport au plan X, Y de la base 16, lorsque le moyen de rappel élastique 17 est dans un état de repos, notamment avant le montage de l’élément de stockage d’énergie 3. La deuxième portion 17b peut être légèrement plus inclinée vers la socle 2 que la première portion 17a. La deuxième portion 17b, qui est optionnelle, est notamment destinée à être en appui contre la surface inférieure 5 de l’élément de stockage d’énergie 3 une fois l’élément de stockage d’énergie 3 mis en place. The base 16 extends in particular in the plane X, Y once the base 16 is fixed to the base 2. The elastic return means 17 comprises for example a first portion 17a and a second portion 17b. The first portion 17a extends in particular from the base 16 in a plane P1 forming an angle ai relative to the plane X, Y of the base 16, when the elastic return means 17 is in a rest state, in particular before the assembly of the energy storage element 3. The second portion 17b can be slightly more inclined towards the base 2 than the first portion 17a. The second portion 17b, which is optional, is in particular intended to bear against the lower surface 5 of the energy storage element 3 once the energy storage element 3 is in place.
On appelle 17e l’extrémité libre du moyen de rappel élastique 17. We call 17e the free end of the elastic return means 17.
Avantageusement, la distance selon l’axe Z entre l’extrémité 17e du moyen de rappel élastique 17 et la surface d’appui 14 du moyen de blocage 13 est inférieure à la longueur L de la portion allongée 11 et/ou à la dimension H de l’élément de stockage d’énergie 3. Advantageously, the distance along the axis Z between the end 17e of the elastic return means 17 and the bearing surface 14 of the blocking means 13 is less than the length L of the elongated portion 11 and/or the dimension H of the energy storage element 3.
Le moyen de rappel élastique 17 est destiné à être comprimé lorsqu’un élément de stockage d’énergie 3 est mis en place. The elastic return means 17 is intended to be compressed when an energy storage element 3 is put in place.
Le moyen de blocage 13 peut être configuré pour appliquer une pression sur la surface supérieure 4 de l’élément de stockage d’énergie 3. The blocking means 13 can be configured to apply pressure on the upper surface 4 of the energy storage element 3.
Le moyen de blocage 13 est destiné à empêcher tout mouvement de l’élément de stockage d’énergie 3, notamment éviter une translation de l’élément de stockage d’énergie 3. The blocking means 13 is intended to prevent any movement of the energy storage element 3, in particular to prevent translation of the energy storage element 3.
Le moyen de blocage 13 peut comprendre une surface d’appui 14, notamment plane ou sensiblement plane. La surface d’appui 14 s’étend notamment dans le plan X, Y. The blocking means 13 may comprise a support surface 14, in particular flat or substantially flat. The support surface 14 extends in particular in the plane X, Y.
La surface d’appui 14 est destinée à être en appui contre la surface supérieure 4 de l’élément de stockage d’énergie 3. La surface d’appui 14 est destinée à éviter une translation de l’élément de stockage d’énergie 3. The support surface 14 is intended to bear against the upper surface 4 of the energy storage element 3. The support surface 14 is intended to prevent translation of the energy storage element 3 .
La surface d’appui 14 présente par exemple une largeur W14 selon l’axe Y. Les largeurs respectives Wn, W et W14 de la portion allongée 11 , de la base 16 et de la surface d’appui 14 peuvent être égales ou sensiblement égales. Selon une variante, les largeurs respectives Wn, W et W14 de la portion allongée 11 , de la base 16 et de la surface d’appui 14 peuvent être différentes. Par exemple, la largeur Wn de la portion allongée 11 peut être inférieure à la largeur W de la base 16 et/ou à la largeur W14 de la surface d’appui 14. Il en résulte une masse réduite d’un tel dispositif 1 , et donc une masse réduite d’un système de stockage d’énergie 100 comprenant au moins un tel dispositif 1 . The support surface 14 has for example a width W14 along the Y axis. The respective widths Wn, W and W14 of the elongated portion 11, of the base 16 and of the support surface 14 may be equal or substantially equal. According to a variant, the respective widths Wn, W and W14 of the elongated portion 11, of the base 16 and of the support surface 14 may be different. For example, the width Wn of the elongated portion 11 may be less than the width W of the base 16 and/or the width W14 of the support surface 14. This results in a reduced mass of such a device 1, and therefore a reduced mass of an energy storage system 100 comprising at least one such device 1.
Dans l’exemple de réalisation représenté en figure 1 , le système de stockage d’énergie 100 comprend sept éléments de stockage d’énergie 3. En variante, le nombre d’éléments de stockage d’énergie 3 pourrait être quelconque. In the exemplary embodiment shown in Figure 1, the energy storage system 100 comprises seven energy storage elements 3. Alternatively, the number of energy storage elements 3 could be any.
Un fonctionnement d’un dispositif 1 du type de celui décrit ci-dessus est décrit ci-après en référence aux figures 2 et 3. An operation of a device 1 of the type described above is described below with reference to Figures 2 and 3.
Avant la mise en place d’un élément de stockage d’énergie 3 (figure 2), le moyen de rappel élastique 17 est dans un état de repos. Le moyen de rappel élastique 17 s’étend principalement dans un plan P1 formant un angle ai par rapport au plan X, Y dans lequel s’étend la base 16. Before the installation of an energy storage element 3 (figure 2), the elastic return means 17 is in a rest state. The elastic return means 17 extends mainly in a plane P1 forming an angle ai relative to the plane X, Y in which the base 16 extends.
Après la mise en place d’un élément de stockage d’énergie 3 (figure 3), le moyen de rappel élastique 17 est comprimé. La première portion 17a du moyen de rappel élastique 17 s’étend par exemple dans un plan P2 formant un angle «2 par rapport au plan X, Y dans lequel s’étend la base 16. L’angle a est notamment inférieur à l’angle ai dans l’état de repos. La deuxième portion 17b du moyen de rappel élastique 17 est en appui contre la surface inférieure 5 de l’élément de stockage d’énergie 3. La différence entre la distance selon l’axe Z entre l’extrémité 17e du moyen de rappel élastique 17 et la surface d’appui 14 du moyen de blocage 13 d’une part et la longueur L de la portion allongée 11 et/ou la dimension H de l’élément de stockage d’énergie 3 d’autre part entraîne une pression exercée par la surface d’appui 14 du moyen de blocage 13 sur la face supérieure 4 de l’élément de stockage d’énergie 3. La surface d’appui 14 est appuyée contre la face supérieure 4 de l’élément de stockage d’énergie 3. After the installation of an energy storage element 3 (figure 3), the elastic return means 17 is compressed. The first portion 17a of the elastic return means 17 extends for example in a plane P2 forming an angle "2 relative to the plane X, Y in which the base 16 extends. The angle a is in particular less than the angle ai in the rest state. The second portion 17b of the elastic return means 17 bears against the lower surface 5 of the energy storage element 3. The difference between the distance along the Z axis between the end 17e of the elastic return means 17 and the bearing surface 14 of the blocking means 13 on the one hand and the length L of the elongated portion 11 and/or the dimension H of the energy storage element 3 on the other hand results in a pressure exerted by the bearing surface 14 of the blocking means 13 on the upper face 4 of the energy storage element 3. The surface support 14 is pressed against the upper face 4 of the energy storage element 3.
Le moyen de rappel élastique 17 permet d’exercer une poussée verticale vers le haut. Il en résulte un blocage de l’élément de stockage d’énergie 3 selon la direction Z. The elastic return means 17 makes it possible to exert a vertical upward thrust. This results in a blocking of the energy storage element 3 in the Z direction.
Avantageusement, le moyen de rappel élastique 17 du dispositif 1 permet un montage aisé d’un élément de stockage d’énergie 3 dans un système de stockage d’énergie 100 et un verrouillage du positionnement de l’élément de stockage d’énergie 3. Advantageously, the elastic return means 17 of the device 1 allows easy mounting of an energy storage element 3 in an energy storage system 100 and locking of the positioning of the energy storage element 3.
Le système de stockage d’énergie 100 peut comprendre plusieurs éléments de stockage d’énergie 3, par exemple plusieurs cellules électrochimiques de stockage d’énergie électrique, notamment plusieurs cellules électrochimiques prismatiques. Les éléments de stockage d’énergie 3 peuvent être positionnés les uns à côté des autres suivant le plan X, Y, une face principale d’un élément de stockage d’énergie 3 faisant face à une face principale d’un autre élément de stockage d’énergie 3. The energy storage system 100 may comprise several energy storage elements 3, for example several electrochemical cells for storing electrical energy, in particular several prismatic electrochemical cells. The energy storage elements 3 can be positioned next to each other along the plane X, Y, a main face of an energy storage element 3 facing a main face of another storage element energy 3.
Par face principale d’un élément de stockage d’énergie 3, on entend une face perpendiculaire ou sensiblement perpendiculaire à l’axe Y. By main face of an energy storage element 3, we mean a face perpendicular or substantially perpendicular to the Y axis.
Pour chaque élément de stockage d’énergie 3, un dispositif 1 peut être prévu au moins d’un côté latéral de l’élément de stockage d’énergie 3. La portion allongée 11 de l’au moins un dispositif 1 s’étend notamment le long d’une face latérale de l’élément de stockage d’énergie 3. For each energy storage element 3, a device 1 can be provided at least on one lateral side of the energy storage element 3. The elongated portion 11 of the at least one device 1 extends in particular along a side face of the energy storage element 3.
Avantageusement, pour chaque élément de stockage d’énergie 3, un dispositif 1 peut être prévu de chaque côté latéral de l’élément de stockage d’énergie 3. Il en résulte un maintien et un verrouillage optimum du positionnement de l’au moins un élément de stockage d’énergie 3. Advantageously, for each energy storage element 3, a device 1 can be provided on each lateral side of the energy storage element 3. This results in optimum maintenance and locking of the positioning of the at least one energy storage element 3.
Pour chaque élément de stockage d’énergie 3, le système de stockage d’énergie 100 peut comprendre un premier dispositif 1 et un deuxième dispositif 1 du type de celui décrit ci-dessus pour le maintien de l’élément de stockage d’énergie 3 sur un socle 2 du système de stockage d’énergie 100, la portion allongée 11 du premier dispositif 1 étant destinée à s’étendre le long d’une première face latérale de l’élément de stockage d’énergie 3, et la portion allongée 11 du deuxième dispositif 1 étant destinée à s’étendre le long d’une deuxième face latérale de l’élément de stockage d’énergie 3 opposée à la première face latérale. For each energy storage element 3, the energy storage system 100 may comprise a first device 1 and a second device 1 of the type described above for maintaining the energy storage element 3 on a base 2 of the energy storage system 100, the elongated portion 11 of the first device 1 being intended to extend along a first lateral face of the energy storage element 3, and the elongated portion 11 of the second device 1 being intended to extend along a second side face of the energy storage element 3 opposite the first side face.
Un mode de réalisation d’un dispositif 30 pour le maintien d’un élément de stockage d’énergie 3 sur un socle 2 d’un système de stockage d’énergie 200 est décrit ci-après en référence aux figures 4 et 5. Un tel système de stockage d’énergie 200 peut être destiné, à titre d’exemple non limitatif, à un véhicule, notamment un véhicule automobile à motorisation hybride ou électrique. An embodiment of a device 30 for maintaining an energy storage element 3 on a base 2 of an energy storage system 200 is described below with reference to Figures 4 and 5. such energy storage system 200 can be intended, by way of non-limiting example, for a vehicle, in particular a motor vehicle with hybrid or electric motorization.
Le dispositif 30 comprend une portion allongée 31 , un moyen de blocage 33 et un moyen de rappel élastique 37. The device 30 comprises an elongated portion 31, a blocking means 33 and an elastic return means 37.
La portion allongée 31 s’étend notamment selon la direction Z. The elongated portion 31 extends in particular in the direction Z.
La portion allongée 31 présente par exemple une longueur L selon l’axe Z et une largeur W31 selon l’axe Y. On appelle H la dimension de l’élément de stockage d’énergie 3 selon l’axe Z. The elongated portion 31 has for example a length L along the Z axis and a width W31 along the Y axis. We call H the dimension of the energy storage element 3 along the Z axis.
La longueur L de la portion allongée 31 est par exemple sensiblement égale à la dimension H de l’élément de stockage d’énergie 3. Avantageusement, la longueur L de la portion allongée 31 est légèrement inférieure à la dimension H de l’élément de stockage d’énergie 3. Il en résulte une mise en compression de l’élément de stockage d’énergie 3 par le dispositif 30, notamment par la surface supérieure 4 de l’élément de stockage d’énergie 3. The length L of the elongated portion 31 is for example substantially equal to the dimension H of the energy storage element 3. Advantageously, the length L of the elongated portion 31 is slightly less than the dimension H of the energy storage element. energy storage 3. This results in compression of the energy storage element 3 by the device 30, in particular by the upper surface 4 of the energy storage element 3.
La portion allongée 31 peut être destinée à s’étendre entre la surface inférieure 5 et la surface supérieure 4 de l’élément de stockage d’énergie 3. The elongated portion 31 may be intended to extend between the lower surface 5 and the upper surface 4 of the energy storage element 3.
Le moyen de blocage 33 peut être configuré pour appliquer une pression sur la surface supérieure 4 de l’élément de stockage d’énergie 3. The blocking means 33 can be configured to apply pressure on the upper surface 4 of the energy storage element 3.
Le moyen de rappel élastique 37 peut être destiné à être agencé entre le socle 2 et la surface inférieure 5 de l’élément de stockage d’énergie 3. The elastic return means 37 may be intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
Le dispositif 30 peut comprendre en outre une base 36 destinée à être agencée entre le socle 2 et la surface inférieure 5 de l’élément de stockage d’énergie 3. The device 30 may further comprise a base 36 intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
Avantageusement, la portion allongée 31 et le moyen de blocage 33 et éventuellement la base 36 du dispositif 30 peuvent être sous la forme d’une seule pièce mécanique. Advantageously, the elongated portion 31 and the locking means 33 and possibly the base 36 of the device 30 can be in the form of a single mechanical part.
La base 36 est notamment destinée à être fixée au socle 2. La portion allongée 31 peut s’étendre entre la base 36 et le moyen de blocage 33. La base 36 peut être fixée au socle 2 par soudage ou rivetage ou vissage ou clippage ou collage, par exemple en utilisant un adhésif. Tout moyen de fixation pourra être utilisé pour fixer la base 36 du dispositif 30 au socle 2. The base 36 is in particular intended to be fixed to the base 2. The elongated portion 31 can extend between the base 36 and the locking means 33. The base 36 can be fixed to the base 2 by welding or riveting or screwing or clipping or gluing, for example using an adhesive. Any fixing means can be used to fix the base 36 of the device 30 to the base 2.
La base 36 présente par exemple une largeur W36 selon l’axe Y. The base 36 has for example a width W36 along the Y axis.
La portion allongée 31 peut être en au moins un matériau élastiquement déformable, par exemple en au moins un matériau plastique. The elongated portion 31 can be made of at least one elastically deformable material, for example of at least one plastic material.
Le matériau du dispositif 30, notamment de la portion allongée 31 , pourra être choisi en fonction de la souplesse souhaitée pour la portion allongée 31. The material of the device 30, in particular of the elongated portion 31, can be chosen according to the flexibility desired for the elongated portion 31.
La portion allongée 31 peut notamment être une languette déformable. The elongated portion 31 may in particular be a deformable tongue.
Le moyen de rappel élastique 37 peut être inséré dans un logement 38 de la base 36. Le logement 38 de la base 36 est notamment délimité par un premier rebord 39 et un deuxième rebord 40 opposé au premier rebord 39. The elastic return means 37 can be inserted into a housing 38 of the base 36. The housing 38 of the base 36 is in particular delimited by a first rim 39 and a second rim 40 opposite the first rim 39.
Le premier rebord 39 et le deuxième rebord 40 de la base 36 s’étendent notamment selon la direction X. Avantageusement, le premier rebord 39 et le deuxième rebord 40 comprennent chacun une cavité configurée pour recevoir une extrémité respective du moyen de rappel élastique 37. The first rim 39 and the second rim 40 of the base 36 extend in particular in the direction X. Advantageously, the first rim 39 and the second rim 40 each comprise a cavity configured to receive a respective end of the elastic return means 37.
Le moyen de rappel élastique 37 est par exemple une lame ressort, par exemple métallique, par exemple en un acier. The elastic return means 37 is for example a leaf spring, for example metallic, for example made of steel.
Le moyen de blocage 33 est destiné à empêcher tout mouvement de l’élément de stockage d’énergie 3, notamment éviter une translation de l’élément de stockage d’énergie 3. Le moyen de blocage 33 peut comprendre une surface d’appui 34, notamment plane ou sensiblement plane. La surface d’appui 34 s’étend notamment dans le plan X, Y. The blocking means 33 is intended to prevent any movement of the energy storage element 3, in particular to prevent translation of the energy storage element 3. The blocking means 33 may comprise a support surface 34, in particular planar or substantially planar. The support surface 34 extends in particular in the plane X, Y.
La surface d’appui 34 est destinée à être en appui contre la surface supérieure 4 de l’élément de stockage d’énergie 3. La surface d’appui 34 est destinée à éviter une translation de l’élément de stockage d’énergie 3. The bearing surface 34 is intended to bear against the upper surface 4 of the energy storage element 3. The bearing surface 34 is intended to prevent translation of the energy storage element 3 .
La surface d’appui 34 présente par exemple une largeur W34 selon l’axe Y. The support surface 34 has for example a width W34 along the Y axis.
Les largeurs respectives W31, W36 et W34 de la portion allongée 31 , de la base 36 et de la surface d’appui 34 peuvent être égales ou sensiblement égales. Selon une variante, les largeurs respectives W31, W36 et W34 de la portion allongée 31 , de la base 36 et de la surface d’appui 34 peuvent être différentes. Par exemple, la largeur W31 de la portion allongée 31 peut être inférieure à la largeur W36 de la base 36 et/ou à la largeur W34 de la surface d’appui 34. Il en résulte une masse réduite d’un tel dispositif 30, et donc une masse réduite d’un système de stockage d’énergie 200 comprenant au moins un tel dispositif 30. The respective widths W31, W36 and W34 of the elongated portion 31, of the base 36 and of the support surface 34 may be equal or substantially equal. According to a variant, the respective widths W31, W36 and W34 of the elongated portion 31, of the base 36 and of the support surface 34 may be different. For example, the width W31 of the elongated portion 31 may be less than the width W36 of the base 36 and/or the width W34 of the support surface 34. This results in a reduced mass of such a device 30, and therefore a reduced mass of an energy storage system 200 comprising at least one such device 30.
Le moyen de blocage 33 peut présenter une forme pleine, par exemple de section triangulaire. Selon une variante, le moyen de blocage 33 pourrait comprendre un évidement, par exemple de forme triangulaire. L’évidement pourrait s’étendre sur toute l’épaisseur e du moyen de blocage 33 ou pourrait s’étendre partiellement des deux côtés du moyen de blocage 33 selon l’axe Y, avec interposition d’une paroi fine ne comprenant pas d’évidement. The blocking means 33 may have a solid shape, for example of a triangular section. According to a variant, the blocking means 33 could comprise a recess, for example triangular in shape. The recess could extend over the entire thickness e of the blocking means 33 or could extend partially on both sides of the blocking means 33 along the axis Y, with the interposition of a thin wall not comprising any obviously.
Par épaisseur e du moyen de blocage 33, on entend sa dimension selon l’axe Y. Un fonctionnement d’un dispositif 30 du type de celui décrit ci-dessus est décrit ci-après en référence aux figures 6 à 8. By thickness e of the blocking means 33, we mean its dimension along the Y axis. An operation of a device 30 of the type described above is described below with reference to Figures 6 to 8.
Avant la mise en place d’un élément de stockage d’énergie 3 (figure 6), le moyen de rappel élastique 37 est dans un état de repos. Le moyen de rappel élastique 37 est disposé dans un logement 38 de la base 36. Le logement 38 a une largeur adaptée selon l’axe Y pour que les extrémités respectives du moyen de rappel élastique 37 soit insérées dans le premier rebord 39 et le deuxième rebord 40 de la base 36. Before the installation of an energy storage element 3 (figure 6), the elastic return means 37 is in a rest state. The elastic return means 37 is arranged in a housing 38 of the base 36. The housing 38 has a width adapted along the axis Y so that the respective ends of the elastic return means 37 are inserted in the first rim 39 and the second rim 40 of base 36.
Le moyen de rappel élastique 37 présente une forme concave de concavité tournée vers le socle 2 lorsque le moyen de rappel élastique 37 est dans le logement 38. On appelle h1 la distance entre la portion du moyen de rappel élastique 37 la plus éloignée du socle 2, notamment sa portion médiane, et le socle 2, dans l’état de repos. The elastic return means 37 has a concave concavity shape facing the base 2 when the elastic return means 37 is in the housing 38. We call h1 the distance between the portion of the elastic return means 37 furthest from the base 2 , in particular its middle portion, and the base 2, in the resting state.
Après la mise en place d’un élément de stockage d’énergie 3 (figures 7 et 8), le moyen de rappel élastique 37 est comprimé. After the installation of an energy storage element 3 (Figures 7 and 8), the elastic return means 37 is compressed.
Pour passer de l’état de repos à l’état comprimé, le moyen de rappel élastique 37 est guidé dans les cavités du premier rebord 39 et du deuxième rebord 40 de la base 36. To go from the rest state to the compressed state, the elastic return means 37 is guided in the cavities of the first rim 39 and the second rim 40 of the base 36.
Dans l’état comprimé, le rayon de courbure du moyen de rappel élastique 37 est supérieur au rayon de courbure du moyen de rappel élastique 37 dans l’état de repos. In the compressed state, the radius of curvature of the elastic return means 37 is greater than the radius of curvature of the elastic return means 37 in the rest state.
On appelle h2 la distance entre la portion du moyen de rappel élastique 37 la plus éloignée du socle 2, notamment sa portion médiane, et le socle 2, dans l’état comprimé. La différence entre les dimensions h2 et h1 entraîne une pression exercée par la surface d’appui 34 du moyen de blocage 33 sur la face supérieure 4 de l’élément de stockage d’énergie 3. La surface d’appui 34 est appuyée contre la face supérieure 4 de l’élément de stockage d’énergie 3. We call h2 the distance between the portion of the elastic return means 37 furthest from the base 2, in particular its middle portion, and the base 2, in the compressed state. The difference between the dimensions h2 and h1 results in a pressure exerted by the support surface 34 of the blocking means 33 on the upper face 4 of the energy storage element 3. The support surface 34 is pressed against the upper face 4 of the energy storage element 3.
La longueur du moyen de rappel élastique 37 est notamment choisie de façon à obtenir la pression souhaitée. The length of the elastic return means 37 is chosen in particular so as to obtain the desired pressure.
Le moyen de rappel élastique 37 permet d’exercer une poussée verticale vers le haut. Il en résulte un blocage de l’élément de stockage d’énergie 3 selon la direction Z. The elastic return means 37 makes it possible to exert a vertical upward thrust. This results in a blocking of the energy storage element 3 in the Z direction.
Avantageusement, le moyen de rappel élastique 37 du dispositif 30 permet un montage aisé d’un élément de stockage d’énergie 3 dans un système de stockage d’énergie 200 et un verrouillage du positionnement de l’élément de stockage d’énergie 3. Advantageously, the elastic return means 37 of the device 30 allows easy mounting of an energy storage element 3 in an energy storage system 200 and locking of the positioning of the energy storage element 3.
Le système de stockage d’énergie 200 peut comprendre plusieurs éléments de stockage d’énergie 3, par exemple plusieurs cellules électrochimiques de stockage d’énergie électrique, notamment plusieurs cellules électrochimiques prismatiques. Les éléments de stockage d’énergie 3 peuvent être positionnés les uns à côté des autres suivant le plan X, Y, une face principale d’un élément de stockage d’énergie 3 faisant face à une face principale d’un autre élément de stockage d’énergie 3. The energy storage system 200 may comprise several energy storage elements 3, for example several electrochemical cells for storing electrical energy, in particular several prismatic electrochemical cells. The energy storage elements 3 can be positioned next to each other along the plane X, Y, a main face of an energy storage element 3 facing a main face of another storage element energy 3.
Pour chaque élément de stockage d’énergie 3, un dispositif 30 peut être prévu au moins d’un côté latéral de l’élément de stockage d’énergie 3. La portion allongée 31 de l’au moins un dispositif 30 s’étend notamment le long d’une face latérale de l’élément de stockage d’énergie 3. For each energy storage element 3, a device 30 can be provided at least on one lateral side of the energy storage element 3. The elongated portion 31 of the at least one device 30 extends in particular along a side face of the energy storage element 3.
Avantageusement, pour chaque élément de stockage d’énergie 3, un dispositif 30 peut être prévu de chaque côté latéral de l’élément de stockage d’énergie 3. Il en résulte un maintien et un verrouillage optimum du positionnement de l’au moins un élément de stockage d’énergie 3. Advantageously, for each energy storage element 3, a device 30 can be provided on each lateral side of the storage element. energy storage 3. This results in optimum maintenance and locking of the positioning of the at least one energy storage element 3.
Pour chaque élément de stockage d’énergie 3, le système de stockage d’énergie 200 peut comprendre un premier dispositif 30 et un deuxième dispositif 30 du type de celui décrit ci-dessus pour le maintien de l’élément de stockage d’énergie 3 sur un socle 2 du système de stockage d’énergie 200, la portion allongée 31 du premier dispositif 30 étant destinée à s’étendre le long d’une première face latérale de l’élément de stockage d’énergie 3, et la portion allongée 31 du deuxième dispositif 30 étant destinée à s’étendre le long d’une deuxième face latérale de l’élément de stockage d’énergie 3 opposée à la première face latérale. For each energy storage element 3, the energy storage system 200 may comprise a first device 30 and a second device 30 of the type described above for maintaining the energy storage element 3 on a base 2 of the energy storage system 200, the elongated portion 31 of the first device 30 being intended to extend along a first lateral face of the energy storage element 3, and the elongated portion 31 of the second device 30 being intended to extend along a second side face of the energy storage element 3 opposite the first side face.
Un mode de réalisation d’un dispositif 60 pour le maintien d’un élément de stockage d’énergie 3 sur un socle 2 d’un système de stockage d’énergie 300 est décrit ci-après en référence aux figures 9 à 12. Un tel système de stockage d’énergie 300 peut être destiné, à titre d’exemple non limitatif, à un véhicule, notamment un véhicule automobile à motorisation hybride ou électrique. An embodiment of a device 60 for maintaining an energy storage element 3 on a base 2 of an energy storage system 300 is described below with reference to Figures 9 to 12. such energy storage system 300 can be intended, by way of non-limiting example, for a vehicle, in particular a motor vehicle with hybrid or electric motorization.
Le dispositif 60 comprend une portion allongée 61 , un moyen de blocage 63 et un moyen de rappel élastique 67. The device 60 comprises an elongated portion 61, a blocking means 63 and an elastic return means 67.
La portion allongée 61 s’étend notamment selon la direction Z. The elongated portion 61 extends in particular in the direction Z.
La portion allongée 61 présente par exemple une longueur L selon l’axe Z et une largeur Wei selon l’axe Y. The elongated portion 61 has for example a length L along the Z axis and a width Wei along the Y axis.
Le dispositif 60 peut comprendre en outre une base 66 destinée à être agencée entre le socle 2 et la surface inférieure 5 de l’élément de stockage d’énergie 3. La base 66 est notamment destinée à être fixée au socle 2. La base 66 peut être fixée au socle 2 par soudage ou rivetage ou vissage ou clippage ou collage, par exemple en utilisant un adhésif. Tout moyen de fixation pourra être utilisé pour fixer la base 66 du dispositif 60 au socle 2. The device 60 may further comprise a base 66 intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3. The base 66 is in particular intended to be fixed to the base 2. The base 66 can be fixed to the base 2 by welding or riveting or screwing or clipping or gluing, for example by using an adhesive. Any fixing means can be used to fix the base 66 of the device 60 to the base 2.
La base 66 présente par exemple une largeur Wee selon l’axe Y. The base 66 has for example a width Wee along the Y axis.
La portion allongée 61 et le moyen de blocage 63 peuvent être sous la forme d’une seule pièce mécanique. The elongated portion 61 and the locking means 63 can be in the form of a single mechanical part.
La portion allongée 61 et le moyen de blocage 63 peuvent être en au moins un matériau plastique ou métallique, par exemple en acier ou en aluminium. The elongated portion 61 and the locking means 63 can be made of at least one plastic or metallic material, for example steel or aluminum.
Le dispositif 60 peut comprendre en outre une portion support 71 . The device 60 may further comprise a support portion 71.
La portion support 71 peut s’étendre entre la portion allongée 61 et la base 66. The support portion 71 can extend between the elongated portion 61 and the base 66.
La portion allongée 61 s’étend par exemple entre la portion support 71 et le moyen de blocage 63. The elongated portion 61 extends for example between the support portion 71 and the blocking means 63.
La portion allongée 61 peut présenter des surfaces principales interne 61 i et externe 61e, ou parois, planes ou sensiblement planes. The elongated portion 61 may have main internal 61 i and external 61 e surfaces, or walls, which are flat or substantially flat.
Par surface principale interne 61 i de la portion allongée 61 , on entend la surface de la portion allongée 61 destinée à faire face à une face latérale de l’élément de stockage d’énergie 3. Par surface principale externe 61 e de la portion allongée 61 , on entend la surface de la portion allongée 61 opposée à la surface principale interne 61 i, notamment parallèle à la surface principale interne 61 i. Selon une variante, la portion allongée 61 peut comprendre au moins une nervure, par exemple une nervure médiane, notamment alignée selon la direction principale d’élongation de la portion allongée 61. Une telle nervure permet d’apporter de la raideur à la portion allongée 61. Il en résulte un effet de résistance de la portion allongée 61 . Une telle nervure est destinée à former un élément de rigid ification de la portion allongée 61 . La portion allongée 61 peut comprendre plusieurs nervures parallèles, notamment orientées selon la direction principale d’élongation de la portion allongée 61 . By main internal surface 61 i of the elongated portion 61, we mean the surface of the elongated portion 61 intended to face a side face of the energy storage element 3. By main external surface 61 e of the elongated portion 61, we mean the surface of the elongated portion 61 opposite the main internal surface 61 i, in particular parallel to the main internal surface 61 i. According to a variant, the elongated portion 61 may comprise at least one rib, for example a median rib, in particular aligned along the main direction of elongation of the elongated portion 61. Such a rib makes it possible to provide stiffness to the elongated portion 61. This results in a resistance effect of the elongated portion 61. Such a rib is intended to form a stiffening element of the elongated portion 61. The elongated portion 61 may comprise several parallel ribs, in particular oriented along the main direction of elongation of the elongated portion 61.
La portion allongée 61 est montée en liaison pivot sur la portion support 71. The elongated portion 61 is mounted in pivot connection on the support portion 71.
La portion allongée 61 est mobile entre une première position alignée selon l’axe Z avec la portion support 71 et une deuxième position dans laquelle la direction principale d’élongation de la portion allongée 61 forme un angle 0 avec l’axe Z. The elongated portion 61 is movable between a first position aligned along the Z axis with the support portion 71 and a second position in which the main direction of elongation of the elongated portion 61 forms an angle 0 with the Z axis.
La portion support 71 et la portion allongée 61 sont par exemple reliées par un axe 73. L’axe 73 est notamment parallèle ou sensiblement parallèle à la direction Y. The support portion 71 and the elongated portion 61 are for example connected by an axis 73. The axis 73 is in particular parallel or substantially parallel to the direction Y.
La portion support 71 peut comprendre des enchevêtrements 72a, 72b, 72c, par exemple trois enchevêtrements. La portion allongée 61 peut comprendre des enchevêtrements 61a, 61 b, par exemple deux enchevêtrements. L’axe 73 est destiné à être inséré dans les enchevêtrements 72a, 72b, 72c de la portion support 71 et dans les enchevêtrements 61 a, 61 b de la portion allongée 61 , un enchevêtrement de la portion allongée 61 étant interposé entre deux enchevêtrements de la portion support 71 . Le nombre d’enchevêtrements 72a, 72b, 72c de la portion support 71 et le nombre d’enchevêtrements 61 a, 61 b de la portion allongée 61 pourront varier. The support portion 71 may comprise tangles 72a, 72b, 72c, for example three tangles. The elongated portion 61 may comprise tangles 61a, 61 b, for example two tangles. The axis 73 is intended to be inserted in the tangles 72a, 72b, 72c of the support portion 71 and in the tangles 61 a, 61 b of the elongated portion 61, an entanglement of the elongated portion 61 being interposed between two tangles of the support portion 71. The number of tangles 72a, 72b, 72c of the support portion 71 and the number of tangles 61 a, 61 b of the elongated portion 61 may vary.
La position de la liaison pivot selon l’axe Z pourra varier. The position of the pivot link along the Z axis may vary.
On appelle L71 la dimension de la portion support 71 selon l’axe Z. We call L71 the dimension of the support portion 71 along the Z axis.
On appelle H la dimension de l’élément de stockage d’énergie 3 selon l’axe Z. We call H the dimension of the energy storage element 3 along the Z axis.
La somme de la longueur L de la portion allongée 11 et de la dimension L71 de la portion support 71 est par exemple sensiblement égale à la dimension H de l’élément de stockage d’énergie 3. Avantageusement, la somme de la longueur L de la portion allongée 11 et de la dimension L71 de la portion support 71 est légèrement inférieure à la dimension H de l’élément de stockage d’énergie 3. Il en résulte une mise en compression de l’élément de stockage d’énergie 3 par le dispositif 60, notamment par la surface supérieure 4 de l’élément de stockage d’énergie 3. The sum of the length L of the elongated portion 11 and the dimension L71 of the support portion 71 is for example substantially equal to the dimension H of the energy storage element 3. Advantageously, the sum of the length L of the elongated portion 11 and the dimension L71 of the support portion 71 is slightly less than the dimension H of the energy storage element 3. This results in a compression of the energy storage element 3 by the device 60, in particular by the upper surface 4 of the energy storage element 3.
Le rapport entre la dimension L71 de la portion support 71 et longueur L de la portion allongée 11 pourra varier. La liaison pivot entre la portion allongée 61 et la portion support 71 pourra être située à un autre emplacement selon l’axe Z. The ratio between the dimension L71 of the support portion 71 and length L of the elongated portion 11 may vary. The pivot connection between the elongated portion 61 and the support portion 71 may be located at another location along the Z axis.
La position du pivot selon l’axe Z pourra notamment être choisie en fonction de considérations d’encombrement, dépendant notamment des applications visées. The position of the pivot along the Z axis may in particular be chosen according to space considerations, depending in particular on the targeted applications.
La portion allongée 61 peut être destinée à s’étendre entre la surface supérieure 4 de l’élément de stockage d’énergie 3 et la portion support 71 , lorsque la portion allongée 61 est dans la première position. La portion support 71 peut être en au moins un matériau plastique ou métallique, par exemple en acier ou en aluminium. The elongated portion 61 may be intended to extend between the upper surface 4 of the energy storage element 3 and the support portion 71, when the elongated portion 61 is in the first position. The support portion 71 can be made of at least one plastic or metallic material, for example steel or aluminum.
Le moyen de blocage 63 peut être configuré pour appliquer une pression sur la surface supérieure 4 de l’élément de stockage d’énergie 3. The blocking means 63 can be configured to apply pressure on the upper surface 4 of the energy storage element 3.
Le moyen de rappel élastique 67 peut être destiné à être agencé entre le socle 2 et la surface inférieure 5 de l’élément de stockage d’énergie 3. The elastic return means 67 may be intended to be arranged between the base 2 and the lower surface 5 of the energy storage element 3.
Le moyen de rappel élastique 67 peut être inséré dans un logement 68 de la base 66. Le logement 68 de la base 66 est notamment délimité par un premier rebord 69 et un deuxième rebord 70 opposé au premier rebord 69. The elastic return means 67 can be inserted into a housing 68 of the base 66. The housing 68 of the base 66 is in particular delimited by a first rim 69 and a second rim 70 opposite the first rim 69.
Le premier rebord 69 et le deuxième rebord 70 de la base 66 s’étendent notamment selon la direction X. Avantageusement, le premier rebord 69 et le deuxième rebord 70 comprennent chacun une cavité configurée pour recevoir une extrémité respective du moyen de rappel élastique 67. Le logement 68 a une largeur adaptée selon l’axe Y pour que les extrémités respectives du moyen de rappel élastique 67 soit insérées dans le premier rebord 69 et le deuxième rebord 70 de la base 66. The first rim 69 and the second rim 70 of the base 66 extend in particular in the direction X. Advantageously, the first rim 69 and the second rim 70 each comprise a cavity configured to receive a respective end of the elastic return means 67. The housing 68 has a width adapted along the Y axis so that the respective ends of the elastic return means 67 are inserted in the first rim 69 and the second rim 70 of the base 66.
Le moyen de rappel élastique 67 est par exemple une lame ressort, par exemple métallique, par exemple en un acier. The elastic return means 67 is for example a leaf spring, for example metallic, for example made of steel.
Le moyen de blocage 63 est destiné à empêcher tout mouvement de l’élément de stockage d’énergie 3, notamment éviter une translation de l’élément de stockage d’énergie 3. The blocking means 63 is intended to prevent any movement of the energy storage element 3, in particular to avoid translation of the energy storage element 3.
Le moyen de blocage 63 peut comprendre une surface d’appui 64, notamment plane ou sensiblement plane. La surface d’appui 64 s’étend notamment dans le plan X, Y. La surface d’appui 64 est destinée à être en appui contre la surface supérieure 4 de l’élément de stockage d’énergie 3. La surface d’appui 64 est destinée à éviter une translation de l’élément de stockage d’énergie 3. The blocking means 63 may comprise a support surface 64, in particular planar or substantially planar. The support surface 64 extends in particular in the plane X, Y. The support surface 64 is intended to bear against the upper surface 4 of the energy storage element 3. The support surface 64 is intended to prevent translation of the energy storage element 3 .
La surface d’appui 64 présente par exemple une largeur W64 selon l’axe Y. The support surface 64 has for example a width W64 along the Y axis.
Les largeurs respectives Wei, Wee et W64 de la portion allongée 61 , de la base 66 et de la surface d’appui 64 peuvent être égales ou sensiblement égales. Selon une variante, les largeurs respectives Wd, Wee et We4 de la portion allongée 61 , de la base 66 et de la surface d’appui 64 peuvent être différentes. Par exemple, la largeur Wd de la portion allongée 61 peut être inférieure à la largeur Wee de la base 66 et/ou à la largeur We4 de la surface d’appui 64. Il en résulte une masse réduite d’un tel dispositif 60, et donc une masse réduite d’un système de stockage d’énergie 300 comprenant au moins un tel dispositif 60. The respective widths Wei, Wee and W64 of the elongated portion 61, of the base 66 and of the support surface 64 may be equal or substantially equal. According to a variant, the respective widths Wd, Wee and We4 of the elongated portion 61, of the base 66 and of the support surface 64 may be different. For example, the width Wd of the elongated portion 61 may be less than the width Wee of the base 66 and/or the width We4 of the support surface 64. This results in a reduced mass of such a device 60, and therefore a reduced mass of an energy storage system 300 comprising at least one such device 60.
Le moyen de blocage 63 peut présenter une forme pleine, par exemple de section triangulaire. Selon une variante, le moyen de blocage 63 pourrait comprendre un évidement, par exemple de forme triangulaire. L’évidement pourrait s’étendre sur toute l’épaisseur e du moyen de blocage 63 ou pourrait s’étendre partiellement des deux côtés du moyen de blocage 63 selon l’axe Y, avec interposition d’une paroi fine ne comprenant pas d’évidement. The blocking means 63 may have a solid shape, for example a triangular section. According to a variant, the blocking means 63 could comprise a recess, for example triangular in shape. The recess could extend over the entire thickness e of the blocking means 63 or could extend partially on both sides of the blocking means 63 along the axis Y, with the interposition of a thin wall not comprising any obviously.
Par épaisseur e du moyen de blocage 63, on entend sa dimension selon l’axe Y. By thickness e of the blocking means 63, we mean its dimension along the Y axis.
Un mode d’exécution d’un procédé de montage d’au moins un élément de stockage d’énergie 3 dans un système de stockage d’énergie 300 comprenant au moins un dispositif 60 du type de celui décrit ci-dessus est décrit ci-après. A mode of execution of a method of mounting at least one energy storage element 3 in an energy storage system 300 comprising at least one device 60 of the type described above is described below.
Dans une étape (figure 12), on fait pivoter la portion allongée 61 autour de l’axe 73, de sorte à faire passer la portion allongée 61 de la première position à la deuxième position. In one step (Figure 12), the elongated portion 61 is pivoted around the axis 73, so as to move the elongated portion 61 from the first position to the second position.
Dans une étape, on met en place l’au moins un élément de stockage d’énergie 3 sur le socle 2, avec interposition du moyen de rappel élastique 67. Le moyen de rappel élastique 67 est dans un état de repos. Le moyen de rappel élastique 67 est situé dans le logement 68 de la base 66. In one step, the at least one energy storage element 3 is placed on the base 2, with the interposition of the elastic return means 67. The elastic return means 67 is in a rest state. The elastic return means 67 is located in the housing 68 of the base 66.
Dans une étape (figure 9), on fait pivoter la portion allongée 61 autour de l’axe 73, de sorte à faire passer la portion allongée 61 de la deuxième position à la première position. La portion allongée 61 du dispositif 60, qui était écartée de la face latérale de l’élément de stockage d’énergie 3 dans la deuxième position, s’étend dans la première position le long de la face latérale de l’élément de stockage d’énergie 3, notamment en contact avec la face latérale de l’élément de stockage d’énergie 3. La surface d’appui 64 du moyen de blocage 63 est en appui contre la surface supérieure 4 de l’élément de stockage d’énergie 3. On obtient un effet de clippage du dispositif 60. Le moyen de rappel élastique 67 est comprimé. Le moyen de rappel élastique 67 est guidé dans les cavités du premier rebord 69 et du deuxième rebord 70 de la base 66 lors du passage de la portion allongée 61 de la deuxième position à la première position. In one step (Figure 9), the elongated portion 61 is pivoted around the axis 73, so as to move the elongated portion 61 from the second position to the first position. The elongated portion 61 of the device 60, which was spaced from the side face of the energy storage element 3 in the second position, extends in the first position along the side face of the storage element d energy 3, in particular in contact with the side face of the energy storage element 3. The bearing surface 64 of the blocking means 63 bears against the upper surface 4 of the energy storage element 3. A clipping effect is obtained from the device 60. The elastic return means 67 is compressed. The elastic return means 67 is guided in the cavities of the first rim 69 and the second rim 70 of the base 66 during the passage of the elongated portion 61 from the second position to the first position.
Le moyen de rappel élastique 67 permet d’exercer une poussée verticale vers le haut. Il en résulte un blocage de l’élément de stockage d’énergie 3 selon la direction Z. The elastic return means 67 makes it possible to exert a vertical upward thrust. This results in a blocking of the energy storage element 3 in the Z direction.
Avantageusement, le moyen de rappel élastique 67 du dispositif 60 permet un montage aisé d’un élément de stockage d’énergie 3 dans un système de stockage d’énergie 300 et un verrouillage du positionnement de l’élément de stockage d’énergie 3. Advantageously, the elastic return means 67 of the device 60 allows easy assembly of an energy storage element 3 in a system energy storage element 300 and locking the positioning of the energy storage element 3.
Le système de stockage d’énergie 300 peut comprendre plusieurs éléments de stockage d’énergie 3, par exemple plusieurs cellules électrochimiques de stockage d’énergie électrique, notamment plusieurs cellules électrochimiques prismatiques. Les éléments de stockage d’énergie 3 peuvent être positionnés les uns à côté des autres suivant le plan X, Y, une face principale d’un élément de stockage d’énergie 3 faisant face à une face principale d’un autre élément de stockage d’énergie 3. The energy storage system 300 may comprise several energy storage elements 3, for example several electrochemical cells for storing electrical energy, in particular several prismatic electrochemical cells. The energy storage elements 3 can be positioned next to each other along the plane X, Y, a main face of an energy storage element 3 facing a main face of another storage element energy 3.
Pour chaque élément de stockage d’énergie 3, un dispositif 60 peut être prévu au moins d’un côté latéral de l’élément de stockage d’énergie 3. La portion allongée 61 de l’au moins un dispositif 60 s’étend notamment le long d’une face latérale de l’élément de stockage d’énergie 3 dans la première position de la portion allongée 61 . For each energy storage element 3, a device 60 can be provided at least on one lateral side of the energy storage element 3. The elongated portion 61 of the at least one device 60 extends in particular along a side face of the energy storage element 3 in the first position of the elongated portion 61.
Avantageusement, pour chaque élément de stockage d’énergie 3, un dispositif 60 peut être prévu de chaque côté latéral de l’élément de stockage d’énergie 3. Il en résulte un maintien et un verrouillage optimum du positionnement de l’au moins un élément de stockage d’énergie 3 de chaque côté latéral de l’élément de stockage d’énergie 3. Advantageously, for each energy storage element 3, a device 60 can be provided on each lateral side of the energy storage element 3. This results in optimum maintenance and locking of the positioning of the at least one energy storage element 3 on each lateral side of the energy storage element 3.
Pour chaque élément de stockage d’énergie 3, le système de stockage d’énergie 300 peut comprendre un premier dispositif 60 et un deuxième dispositif 60 du type de celui décrit ci-dessus pour le maintien de l’élément de stockage d’énergie 3 sur un socle 2 du système de stockage d’énergie 300, la portion allongée 61 du premier dispositif 30 étant destinée à s’étendre le long d’une première face latérale de l’élément de stockage d’énergie 3 dans la première position de la portion allongée 61 , et la portion allongée 61 du deuxième dispositif 60 étant destinée à s’étendre le long d’une deuxième face latérale de l’élément de stockage d’énergie 3 opposée à la première face latérale dans la première position de la portion allongée 61. For each energy storage element 3, the energy storage system 300 may comprise a first device 60 and a second device 60 of the type described above for maintaining the energy storage element 3 on a base 2 of the energy storage system 300, the elongated portion 61 of the first device 30 being intended to extend along a first lateral face of the energy storage element 3 in the first position of the elongated portion 61, and the elongated portion 61 of the second device 60 being intended to extend along a second lateral face of the energy storage element 3 opposite the first side face in the first position of the elongated portion 61.
Dans les modes de réalisation décrits ci-dessus, la dimension H de l’au moins un élément de stockage d’énergie 3 peut varier à cause de la dispersion de fabrication. Un dispositif 1 , 30, 60 du type de ceux décrits ci- dessus permet un maintien et un verrouillage optimum du positionnement de l’au moins un élément de stockage d’énergie 3, même en cas de variations de la dimension H de l’au moins un élément de stockage d’énergie 3. In the embodiments described above, the dimension H of the at least one energy storage element 3 may vary due to manufacturing dispersion. A device 1, 30, 60 of the type of those described above allows optimum maintenance and locking of the positioning of the at least one energy storage element 3, even in the event of variations in the dimension H of the at least one energy storage element 3.
Dans les modes de réalisation décrits ci-dessus, la surface supérieure 4 de l’au moins un élément de stockage d’énergie 3 peut comprendre un rebord, notamment en forme d’excroissance ou présentant une pente par rapport au plan X, Y. On pourra prévoir une forme complémentaire dans la surface d’appui 14, 34, 64 du moyen de blocage 13, 33, 63. Il en résulte un effet de pression accru et un verrouillage encore optimisé du positionnement de l’au moins un élément de stockage d’énergie 3. In the embodiments described above, the upper surface 4 of the at least one energy storage element 3 may comprise a rim, in particular in the form of an excrescence or having a slope relative to the plane X, Y. A complementary shape can be provided in the support surface 14, 34, 64 of the blocking means 13, 33, 63. This results in an increased pressure effect and further optimized locking of the positioning of the at least one element of energy storage 3.
Un avantage d’un dispositif du type de ceux décrits ci-dessus est lié au fait que les éléments de stockage d’énergie peuvent être mis en position directement dans un système de stockage d’énergie sans passer par une étape intermédiaire de création d'un module assemblant les éléments de stockage d’énergie. Il en résulte un coût de fabrication réduit d’un système de stockage d’énergie, une durée de montage réduite d’un système de stockage d’énergie et un encombrement réduit d’un système de stockage d’énergie. An advantage of a device of the type described above is linked to the fact that the energy storage elements can be placed in position directly in an energy storage system without going through an intermediate step of creating a module assembling the energy storage elements. This results in a reduced manufacturing cost of an energy storage system, a reduced assembly time of an energy storage system and a reduced footprint of an energy storage system.
Un avantage d’un dispositif du type de ceux décrits ci-dessus est lié au fait que le nombre de pièces mécaniques d’un système de stockage d’énergie est réduit. Il en résulte un encombrement et une masse réduite d’un système de stockage d’énergie. Bien que l’invention ait été décrite dans le cas où le dispositif est destiné au maintien d’un élément de stockage d’énergie, par exemple une cellule prismatique, sur un socle d’un système de stockage d’énergie, l’invention pourrait également s’appliquer à d’autres éléments de stockage d’énergie que des cellules prismatiques, par exemple à des micromodules comprenant par exemple des cellules cylindriques. An advantage of a device of the type described above is linked to the fact that the number of mechanical parts of an energy storage system is reduced. This results in a reduced size and mass of an energy storage system. Although the invention has been described in the case where the device is intended for maintaining an energy storage element, for example a prismatic cell, on a base of an energy storage system, the invention could also apply to energy storage elements other than prismatic cells, for example to micromodules comprising, for example, cylindrical cells.
Il est entendu que le nombre et les dimensions des éléments de stockage d’énergie ne sont en rien limitatifs. It is understood that the number and dimensions of the energy storage elements are in no way limiting.
Bien que l’invention ait été décrite dans le cas d’une batterie pour un véhicule automobile, l’invention s’applique à tous les domaines dans lesquels il est requis de pouvoir mettre en place des éléments de stockage d’énergie directement dans les systèmes de stockage d’énergie, par exemple pour des packs batterie stationnaires d’habitations destinés à un stockage d’énergie importante. Although the invention has been described in the case of a battery for a motor vehicle, the invention applies to all areas in which it is required to be able to place energy storage elements directly in the energy storage systems, for example for stationary residential battery packs intended for large energy storage.

Claims

REVENDICATIONS
1. Dispositif (1 ; 30 ; 60) pour le maintien d’un élément de stockage d’énergie (3) sur un socle (2) d’un système de stockage d’énergie (100 ; 200 ; 300), le dispositif comprenant une portion allongée (11 ; 31 ; 61 ), un moyen de blocage (13 ; 33 ; 63) et un moyen de rappel élastique (17 ; 37 ; 67), le moyen de blocage (13 ; 33 ; 63) étant configuré pour appliquer une pression sur une surface supérieure (4) de l’élément de stockage d’énergie (3), le moyen de rappel élastique (17 ; 37 ; 67) étant destiné à être agencé entre le socle (2) et une surface inférieure (5) de l’élément de stockage d’énergie (3), la portion allongée (11 ; 31 ; 61 ) étant destinée à s’étendre au moins partiellement entre la surface inférieure (5) et la surface supérieure (4) de l’élément de stockage d’énergie (3). 1. Device (1; 30; 60) for maintaining an energy storage element (3) on a base (2) of an energy storage system (100; 200; 300), the device comprising an elongated portion (11; 31; 61), a locking means (13; 33; 63) and an elastic return means (17; 37; 67), the locking means (13; 33; 63) being configured to apply pressure on an upper surface (4) of the energy storage element (3), the elastic return means (17; 37; 67) being intended to be arranged between the base (2) and a surface lower (5) of the energy storage element (3), the elongated portion (11; 31; 61) being intended to extend at least partially between the lower surface (5) and the upper surface (4) of the energy storage element (3).
2. Dispositif selon la revendication 1 , comprenant en outre une base (16 ; 36 ; 66) destinée à être agencée entre le socle (2) et la surface inférieure (5) de l’élément de stockage d’énergie (3), la portion allongée (11 ; 31 ; 61 ) s’étendant au moins partiellement entre la base (16 ; 36 ; 66) et le moyen de blocage (13 ; 33 ; 63). 2. Device according to claim 1, further comprising a base (16; 36; 66) intended to be arranged between the base (2) and the lower surface (5) of the energy storage element (3), the elongated portion (11; 31; 61) extending at least partially between the base (16; 36; 66) and the locking means (13; 33; 63).
3. Dispositif selon la revendication 1 ou 2, la portion allongée (11 ), le moyen de blocage (13) et le moyen de rappel élastique (17) étant sous la forme d’une seule pièce mécanique. 3. Device according to claim 1 or 2, the elongated portion (11), the blocking means (13) and the elastic return means (17) being in the form of a single mechanical part.
4. Dispositif selon l’une des revendications précédentes, la portion allongée (11 ), le moyen de blocage (13) et le moyen de rappel élastique (17) étant formés dans une feuille, par exemple en matériau métallique. 4. Device according to one of the preceding claims, the elongated portion (11), the blocking means (13) and the elastic return means (17) being formed in a sheet, for example of metallic material.
5. Dispositif selon la revendication 1 ou 2, le moyen de rappel élastique (37 ; 67) étant inséré dans un logement de la base (36 ; 66). 5. Device according to claim 1 or 2, the elastic return means (37; 67) being inserted in a housing of the base (36; 66).
6. Dispositif selon la revendication 1 ou 2 ou 5, la portion allongée (31 ; 61 ) et le moyen de blocage (33 ; 63) étant sous la forme d’une seule pièce mécanique. 6. Device according to claim 1 or 2 or 5, the elongated portion (31; 61) and the blocking means (33; 63) being in the form of a single mechanical part.
7. Dispositif selon l’une des revendications précédentes, comprenant en outre une portion support (71 ), s’étendant entre la portion allongée (61 ) et la base (66), la portion allongée (61 ) étant montée en liaison pivot sur la portion support (71 ). 7. Device according to one of the preceding claims, further comprising a support portion (71), extending between the elongated portion (61) and the base (66), the elongated portion (61) being mounted in pivot connection on the support portion (71).
8. Dispositif selon l’une quelconque des revendications 5 à 7, le moyen de rappel élastique (37 ; 67) étant une lame ressort, par exemple en un acier. 8. Device according to any one of claims 5 to 7, the elastic return means (37; 67) being a leaf spring, for example made of steel.
9. Système de stockage d’énergie comprenant au moins un dispositif (1 ; 30 ; 60) selon l’une quelconque des revendications précédentes pour le maintien d’un élément de stockage d’énergie (3) sur un socle (2) du système de stockage d’énergie, la portion allongée (11 ; 31 ; 61 ) de l’au moins un dispositif étant destinée à s’étendre le long d’une face latérale de l’élément de stockage d’énergie (3), le système de stockage d’énergie comprenant notamment un premier dispositif et un deuxième dispositif selon l’une quelconque des revendications précédentes pour le maintien d’un élément de stockage d’énergie sur un socle du système de stockage d’énergie, la portion allongée du premier dispositif étant destinée à s’étendre le long d’une première face latérale de l’élément de stockage d’énergie, et la portion allongée du deuxième dispositif étant destinée à s’étendre le long d’une deuxième face latérale de l’élément de stockage d’énergie opposée à la première face latérale. 9. Energy storage system comprising at least one device (1; 30; 60) according to any one of the preceding claims for maintaining an energy storage element (3) on a base (2) of the energy storage system, the elongated portion (11; 31; 61) of the at least one device being intended to extend along a lateral face of the energy storage element (3), the energy storage system comprising in particular a first device and a second device according to any one of the preceding claims for maintaining an energy storage element on a base of the energy storage system, the elongated portion of the first device being intended to extend along a first side face of the energy storage element, and the elongated portion of the second device being intended to extend along a second side face of the energy storage element opposite the first side face.
10. Véhicule (500), notamment automobile, comprenant un dispositif (1 ; 30 ; 60) selon l’une quelconque des revendications 1 à 8 et/ou un système de stockage d’énergie (100 ; 200 ; 300) selon la revendication 9. 10. Vehicle (500), in particular automobile, comprising a device (1; 30; 60) according to any one of claims 1 to 8 and/or an energy storage system (100; 200; 300) according to claim 9.
PCT/EP2023/068555 2022-08-02 2023-07-05 Device for clamping an energy storage element to a pedestal of an energy storage system WO2024028033A1 (en)

Applications Claiming Priority (2)

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FRFR2208000 2022-08-02
FR2208000A FR3138737A1 (en) 2022-08-02 2022-08-02 Device for maintaining an energy storage element on a base of an energy storage system.

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Citations (5)

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CN101257102A (en) * 2007-02-27 2008-09-03 明基电通股份有限公司 Battery snap-in apparatus
US20170222251A1 (en) * 2015-03-04 2017-08-03 Lg Chem, Ltd. Clamping device, and battery module comprising same
US10468644B2 (en) 2011-10-17 2019-11-05 Samsung Sdi Co., Ltd Battery cell with integrated mounting foot
US20210288369A1 (en) * 2018-07-10 2021-09-16 Wickeder Westfalenstahl Gmbh Distance Compensating Element, Use of a Metal Foil as Distance Compensating Element and Arrangement with Distance Compensating Element
US20210351452A1 (en) * 2018-07-31 2021-11-11 Sanyo Electric Co., Ltd. Power supply device, vehicle having same, and buffer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257102A (en) * 2007-02-27 2008-09-03 明基电通股份有限公司 Battery snap-in apparatus
US10468644B2 (en) 2011-10-17 2019-11-05 Samsung Sdi Co., Ltd Battery cell with integrated mounting foot
US20170222251A1 (en) * 2015-03-04 2017-08-03 Lg Chem, Ltd. Clamping device, and battery module comprising same
US20210288369A1 (en) * 2018-07-10 2021-09-16 Wickeder Westfalenstahl Gmbh Distance Compensating Element, Use of a Metal Foil as Distance Compensating Element and Arrangement with Distance Compensating Element
US20210351452A1 (en) * 2018-07-31 2021-11-11 Sanyo Electric Co., Ltd. Power supply device, vehicle having same, and buffer

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