EP4505547A1 - Module pour assemblage de cellules électrochimiques, assemblage électrochimique, procédé de fabrication d'un élément de maintien et procédé d'assemblage d'un module correspondants - Google Patents
Module pour assemblage de cellules électrochimiques, assemblage électrochimique, procédé de fabrication d'un élément de maintien et procédé d'assemblage d'un module correspondantsInfo
- Publication number
- EP4505547A1 EP4505547A1 EP23717476.8A EP23717476A EP4505547A1 EP 4505547 A1 EP4505547 A1 EP 4505547A1 EP 23717476 A EP23717476 A EP 23717476A EP 4505547 A1 EP4505547 A1 EP 4505547A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrochemical
- cells
- housing
- cell
- row
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
Definitions
- TITLE Module for assembling electrochemical cells, Electrochemical assembly, Process for manufacturing a holding element and Process for assembling a corresponding module
- the present invention relates to an electrochemical module for an assembly of electrochemical cells, the electrochemical module delimiting electrochemical cell housings, the electrochemical module comprising, an electrochemical cell for each electrochemical cell housing, one of the electrochemical cells being arranged in each cell housing electrochemical, each electrochemical cell comprising a lateral surface, the electrochemical module comprising at least two electrochemical cell holding elements, each electrochemical cell is held by two, in particular exactly two, holding elements, each electrochemical cell housing being partly delimited by two adjacent holding elements, and the holding elements being in contact with the side surface of at least one electrochemical cell.
- an electrochemical battery module comprising cylindrical batteries and heat distribution elements.
- the heat distribution elements are formed by sheet-shaped graphite material, foam-shaped graphite or extruded graphite.
- This battery module has a limited heat distribution capacity and a limited lifespan for a given size.
- the aim of the invention is to propose an electrochemical cell module or battery module having a significant heat distribution capacity and a long lifespan, while being economical.
- the subject of the invention is a module as indicated above characterized in that the holding elements are made of an aluminum-based material, in particular aluminum or an aluminum alloy.
- the module may include one or more of the following characteristics:
- each of the holding elements is an extruded profile, in particular in a single piece;
- the electrochemical cell housings are arranged in housing rows and housing columns, and the holding elements comprise at least one interrow holding element, adapted to hold the electrochemical cells of two rows of adjacent cells and holding elements end surface, adapted to hold cells of a single row of cells and forming an end surface of the electrochemical module;
- each holding element comprises at least two housing surfaces, each housing surface delimiting a part of an electrochemical cell housing;
- the electrochemical module comprises a first terminal flange, delimiting, for each electrochemical cell housing, an end part of this electrochemical cell housing and in which this end part is adapted to house one end of the associated electrochemical cell;
- the electrochemical module comprises a cooling plate, and in which the first end flange is arranged between the cooling plate and the holding elements;
- the electrochemical module comprises thermal bridge elements, each thermal bridge element being adapted to thermally connect a holding element to the cooling plate, the first end flange forms, for each thermal bridge element, a thermal bridge housing , and each thermal bridge element is housed in the associated thermal bridge housing;
- the electrochemical module comprises, for each thermal bridge element, a thermal wedge, in particular made of a silicone-based material, disposed between the thermal bridge element and the cooling plate, in which the thermal wedge has a thermal conductivity d 'at least 3W/mK or 5W/mK, and an elasticity greater than those of the cooling plate and the thermal bridge element;
- the electrochemical module comprises a second terminal flange, delimiting, for each electrochemical cell housing, an end part of this electrochemical cell housing and in which this end part is adapted to house one end of the associated electrochemical cell, and where appropriate , wherein the second end flange is disposed opposite the first end flange;
- the lateral surface of each cell is cylindrical, in particular with a circular section, and/or each electrochemical cell is held by exactly two holding elements;
- each electrochemical cell comprises a casing and an electrically insulating layer disposed on the casing and in which the electrically insulating layer forms the side surface;
- each electrochemical cell has a circular section having a given cell radius (RC), and in which each housing surface comprises a housing radius (RL) and in which the housing radius is between the radius of cell RC and 1.05 times the cell radius (RC).
- RC cell radius
- the invention also relates to an electrochemical assembly, characterized in that it comprises at least two electrochemical modules as defined above, and a common cooling plate in one piece and in that the cooling plate common constitutes the cooling plate of each electrochemical module.
- the invention also relates to a method of manufacturing a holding element for an electrochemical module as defined above, comprising the following steps: extrusion of a bar of base material by forming an extruded bar; cutting the extruded bar to length obtaining a blank of a holding element; deburring of the blank of the holding element; possibly drilling and tapping tapped holes; by obtaining the holding element.
- the invention also relates to a method of assembling a module as defined above, comprising the following steps: provision of a first end holding element; providing electrochemical cells of a first row of electrochemical cells, each electrochemical cell having a central axis (XX); depositing each electrochemical cell radially with respect to its central axis on an end holding element housing surface forming a first row of electrochemical cells; provision of an inter-row holding element; depositing the inter-row holding element on the first row of electrochemical cells, radially relative to the axis of each of the electrochemical cells of the first row of electrochemical cells; providing electrochemical cells of a second row of electrochemical cells, depositing each electrochemical cell of this second row radially relative to its central axis on the inter-row holding element forming a second row of electrochemical cells; provision of a second end holding element; and depositing the second end retaining element on the second row of electrochemical cells, radially relative to the axis of each of the electrochemical cells of the second row of electrochemical cells.
- Figure 1 shows an electrochemical assembly according to the invention in a partially exploded view
- Figure 2 shows a longitudinal sectional view of part of the electrochemical assembly according to Figure 1;
- FIG 3 is an exploded view of an electrochemical module according to the invention.
- Figure 4 is a plan view of part of an electrochemical module according to the invention.
- FIG 5 is a perspective view of the part of an electrochemical module of Figure 4.
- FIG 6 is a perspective view of an end holding element of an electrochemical module according to the invention.
- FIG 7 is a perspective view of an inter-row holding element of an electrochemical module according to the invention.
- Figure 8 is a plan view corresponding to Figure 4, the electrochemical elements being omitted;
- Figure 9 is a plan view of the part of the electrochemical module of Figure 5, illustrating steps for assembling the module;
- Figure 10 is a view similar to that of Figure 9, but being a perspective view; And
- Figure 11 is a perspective view of a first end flange of an electrochemical module and thermal bridge elements.
- Figure 1 shows an electrochemical assembly or battery, according to the invention designated by the general reference 2.
- the electrochemical assembly 2 or battery comprises a plurality of electrochemical modules 4, which can be connected together.
- the electrochemical assembly 2 is provided with a cooling plate 6.
- the cooling plate 6 is in this case a common cooling plate 6, that is to say belonging to a plurality of electrochemical modules 4.
- the cooling plate 6 is of a single holding.
- the electrochemical assembly 2 comprises a single cooling plate 6 per electrochemical module 4.
- the electrochemical assembly 2 in this case comprises eight electrochemical modules 4. However, the electrochemical assembly 2 may comprise more or less than eight electrochemical modules 4, for example between two and sixteen electrochemical modules. Each electrochemical module 4 has a substantially rectangular parallelepiped shape.
- Each electrochemical module 4 is provided with a plurality of electrochemical cells 10.
- Each electrochemical cell 10 comprises a lateral surface 12, in this case cylindrical and of circular section.
- the side surface 12 may be cylindrical with a non-circular section or have another shape.
- Each electrochemical cell 10 extends along a central axis X-X of this electrochemical cell.
- Each electrochemical cell 10 is a Lithium-Ion type electrochemical cell.
- each electrochemical cell is of the LiFePO 4 , LiMnFePO 4 , or LiVPO 4 F type.
- electrochemical element of the LiFePO 4 or LiMnFePO 4 type means an electrochemical element whose positive electrode (cathode) comprises one or more electrochemically active materials, at least one of which is based on a lithiated phosphate of at least one transition metal, of formula Li x Fei-yM y PO 4 , where M is chosen from the group consisting of B, Mg, Al, Si, Ca, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Y, Zr, Nb and Mo; 0.8 ⁇ x ⁇ 1.2; and 0 ⁇ y ⁇ 0.6.
- electrochemical element of the LiVPO 4 F type means an electrochemical element whose positive electrode (cathode) comprises one or more electrochemically active materials, at least one of which is based on a compound of the LiVPO 4 F type.
- Each electrochemical cell 10 comprises a casing 16, in this case made of metal, and an electrically insulating layer 18 placed on the casing 16.
- the electrically insulating layer 18 forms the lateral surface 12.
- the casing 16 includes, for example, a metal wall.
- the electrically insulating layer 18 is for example a layer of polyimide and an adhesive material and has an insulating thickness of between 0.15 mm and 1 mm.
- the electrically insulating layer 18 can be in a single layer or two partial layers superimposed, for example by essentially making two complete turns of a ribbon around the casing.
- the insulation thickness is the entire thickness of the electrically insulating layer 18.
- the material is for example an aramid tape of the “MYOFLEX NHN 2_3_2” ® (registered trademark) type from the “Von Roll” company.
- the thickness of the insulation and the adhesive is for example 0.32 mm and the thickness of the insulation alone can be 0.19 mm +/- 10%.
- the lateral surface 12 has a circular section and has a given cell radius RC.
- This RC cell radius is for example between 54mm and 54.6mm.
- the RC cell radius can for example also be between 28mm and 70mm.
- the electrochemical cells 10 of an electrochemical module 4 are arranged in rows of cells 20 and columns of cells 22 (see Figure 4).
- the electrochemical cells 10 of each row of cells 20 have parallel and coplanar central axes X-X.
- the distance between two rows of adjacent cells 20 is greater than the diameter of each electrochemical cell.
- the rows of cells 20 are therefore not nested within each other.
- the electrochemical cells 10 of each column of cells 22 have parallel and coplanar central axes X-X.
- the distance between two columns of adjacent cells 22 is greater than the diameter of each electrochemical cell.
- the columns of cells 22 are therefore not nested within each other.
- each electrochemical module 4 comprises three electrochemical cells per row of cells 20 and four electrochemical cells 10 per column of cells 22.
- the electrochemical module 4 delimits electrochemical cell housings 30. Each electrochemical cell housing 30 receives one of the electrochemical cells 10.
- These electrochemical cell housings 30 are arranged in rows of housings 32 and columns of housings 34. These rows of housings 32 and housing columns 34 correspond to the rows of cells 20 and columns of cells 22 and their arrangement is identical.
- the electrochemical module 4 comprises at least two holding elements 36 of the electrochemical cells 10. Each electrochemical cell housing 30 is partly delimited by two adjacent holding elements 36.
- the holding elements 36 are adapted to be in contact with the lateral surface 12 of at least one electrochemical cell 10. In this case, each time two adjacent holding elements 36 receive between them the electrochemical cells 10 of a row of cells 20 and hold these electrochemical cells 10.
- each holding element 36 comprises, for each electrochemical cell 10, a housing surface 38 which is complementary to a segment of the lateral surface 12 of the electrochemical cell.
- each holding element 36 comprises at least two housing surfaces 38. Each housing surface delimits a part of an electrochemical cell housing.
- each electrochemical cell 10 is held radially by two, in particular exactly two, adjacent holding elements 36.
- the housing surface 38 surrounds the side surface 12 of the associated electrochemical cell 10 preferably over at least 30% of the circumference of the side surface 12 and preferably over at least 40% of this circumference.
- the housing surface 38 surrounds the side surface 12 of the associated electrochemical cell preferably by less than 50% of the circumference of the side surface 12 or preferably by less than 45% of this circumference.
- the housing surface 38 extends over an angular sector corresponding to at least 1 18° (30%) of the circumference and preferably at least 144° (40%) of the circumference.
- the housing surface 38 surrounds the lateral surface 12 of the associated electrochemical cell over an angular sector less than 180° (50%) of the circumference or preferably over an angular sector less than 162° ( 45%) of this circumference.
- the housing surface 38 can have an axial length LAL which is at least 50% of the axial length LAC of the electrochemical cell 10 or at least 60% of the axial length LAC.
- the LAL length is at least 70% of LAC.
- the axial length LAL of the housing surface 38 may also be less than 90%, 80% or 70% of the axial length LAC.
- Each housing surface 38 is for example a segment of a cylinder having a housing radius RL.
- the size of this housing radius RL can be between the cell radius RC and 1.05 times the cell radius RC.
- the housing radius RL can generally be greater than the cell radius RC.
- Each holding element 36 is made of an aluminum-based material.
- each holding element 36 is made of aluminum or an aluminum alloy.
- the aluminum weight content of the material of each holding element is at least 70%, preferably at least 85%. Aluminum content may be in % by weight.
- the aluminum-based material is an aluminum alloy of Series 2000 (aluminum copper), Series 5000 (aluminum magnesium), Series 6000 (aluminum magnesium silicon) or Series 7000 (aluminum zinc). These alloys are preferential given that they are extrudable.
- Each holding element 36 is advantageously an extruded profile.
- the material of the holding element 36 is extrudable.
- Each holding element 36 is advantageously made in one piece.
- the thermal conductivity of the material of each holding element 36 is greater than 120 W/mK, greater than 130 W/mK, greater than 150 W/mK; greater than 160 W/mK; greater than 170 W/mK; greater than 180 W/mK, and preferably greater than 200W/mK.
- the thermal conductivity of the material of each holding element 36 may also be less than 250 W/mK, less than 230 W/mK or less than 210 W/mK.
- the thermal conductivity of the material of each holding element 36 may be greater than the thermal conductivity of graphite.
- the holding surfaces 38 have not been machined after extrusion and their surface state is therefore the state obtained by extrusion.
- the holding elements 36 of the module include two types of holding elements, namely inter-row holding elements 40 ( Figure 7) and end holding elements 42 ( Figure 6).
- Each inter-row holding element 40 is adapted to hold the electrochemical cells 10 of two adjacent rows of cells 20.
- each inter-row holding element 40 comprises pairs of holding surfaces 38 opposite each other.
- the number of pairs of holding surfaces 38 is identical to the number of columns of housing 34 or columns of cells 22. In this case, each inter-row holding element 40 comprises exactly three pairs of holding surfaces 38.
- Each end holding element 42 is adapted to hold the cells of a single row of cells 20, namely of a row of end cells, and forms moreover an end surface 44 of the electrochemical module 4.
- the number of holding surfaces 38 is identical to the number of housing columns 34 or cell columns 22. In this case, each end holding element 42 comprises exactly three holding surfaces 38.
- the number of inter-row holding elements 40 of an electrochemical module 4 is equal to the number of rows of housing 32 or number of rows of cells 20 minus two and exactly two end holding elements 42.
- the ends of the inter-row holding elements 40 and the end holding elements 42 together form two free and closed side surfaces 45 of the module.
- the side surfaces 45 are in this case substantially flat and rectangular.
- the electrochemical module 4 comprises a first end flange 50 delimiting, for each electrochemical cell housing 30, an end part 52 of this electrochemical cell housing. This end part 52 is adapted to accommodate an axial end of the associated electrochemical cell 10.
- the first end flange 50 is electrically insulating and preferably made of plastic material.
- the first end flange 50 is for example made of Polyamide 66. Preferably, it is in one piece and/or manufactured by injection molding.
- the first end flange 50 is made of a material having a thermal conductivity lower than that of the material of the cooling plate 6 and that of the material of the holding elements 36.
- the first end flange 50 is arranged between the cooling plate 6 and the holding elements 36.
- the electrochemical module 4 comprises thermal bridge elements 54, each thermal bridge element being adapted to thermally connect a holding element 36, and therefore the electrochemical cells 10, to the cooling plate 6.
- Each thermal bridge element 54 is made of a material having a thermal conductivity substantially identical to that of the materials of the holding elements 36 and/or of the cooling plate 6.
- the material of each thermal bridge element 54 has a thermal conductivity greater than that of the material of the first flange terminal 50.
- the thermal bridge element 54 is for example made of a metal and in particular of an aluminum-based alloy or aluminum.
- each thermal bridge element is adjacent to at least two electrochemical cells or cell accommodation.
- six thermal bridge elements 54 are surrounded by four electrochemical cells and ten thermal bridge elements 54 which are adjacent to exactly two electrochemical cells.
- Each thermal bridge element 54 is thermally connected to a holding element 36 and is in particular in contact with it.
- each thermal bridge element 54 is a stepped sleeve.
- the thermal bridge element 54 is fixed by a fixing screw 56 axially against the holding element 36.
- each holding element 36 comprises for each fixing screw a tapped hole 58.
- the first end flange 50 forms, for each thermal bridge element 54, a thermal bridge housing 66.
- the thermal bridge housing 66 is in this case a substantially cylindrical stepped open cavity in which the thermal bridge element 54 is received by adjustment and in particular by tight adjustment. In the absence of the fixing screw 56, the thermal bridge element 54 is advantageously held in the thermal bridge housing 66 by friction.
- Each thermal bridge element 54 is housed in the associated thermal bridge housing 66.
- Each thermal bridge element 54 preferably slightly exceeds the first end flange 50 on the side of the cooling plate.
- the electrochemical module 4 comprises, for each thermal bridge element 54, a thermal pad 68 (called in English "thermal pad") arranged between the associated thermal bridge element 54 and the cooling plate 6 and connecting the bridge element thermal block 54 thermally to the cooling plate 6.
- the thermal wedge 68 has a thermal conductivity of at least 3W/mK or 5W/mK, and an elasticity greater than those of the cooling plate 6 and the thermal bridge element 54.
- the thermal wedge 68 is for example made of a silicone-based material.
- the thermal wedge 68 is made of a material having a Shore 00 hardness of 40 and a thermal conductivity of 4W/mK.
- the electrochemical module 4 also comprises a second terminal flange 70 delimiting, for each electrochemical cell housing 30, an end part 72 of this electrochemical cell housing. This end part 72 is adapted to accommodate an axial end of the associated electrochemical cell 10.
- the second end flange 70 is arranged opposite the first end flange 50.
- the second end flange 70 is electrically insulating and preferably made of plastic.
- the second end flange 70 is for example made of Polyamide 66. Preferably, it is in one piece and/or manufactured by injection molding.
- the second end flange 70 is made of a material having a thermal conductivity lower than that of the material of the cooling plate and that of the material of the holding elements 36.
- the holding elements 36 are manufactured according to a manufacturing process comprising the following steps:
- the base material is for example heated aluminum or a heated aluminum-based alloy.
- the temperature of the base material during this step is a temperature allowing extrusion.
- the length of the blank is identical to the length of the holding element 36 to be manufactured.
- the blank of the holding element corresponds for example essentially to an inter-row holding element 40 or end 42 of Figures 6 and 7, but is not yet trimmed and without tapping.
- the holding element 36 obtained is for example the inter-row holding element 40 or the end 42.
- the housing surfaces 38, the end surface 44 and the surfaces, which form portions of the side surface 45, of each holding element 36, are obtained directly by extrusion, that is to say these surfaces are not machined between extrusion and assembly of the electrochemical module 4. In the assembled state of the electrochemical module 4, these surfaces are therefore in the extrusion state.
- the electrochemical modules 4 according to the invention are advantageously assembled according to a process comprising the following steps (see Figure 9):
- step E1 Supply of a first end holding element 42 (step E1).
- each electrochemical cell 10 radially relative to its central axis on a housing surface 38 of the end holding element, forming a first row of electrochemical cells (step E3).
- the direction of this deposition of electrochemical cell 10 on the housing surface 38 is illustrated as direction DEC in Figure 10.
- step E4 Deposition of the inter-row holding element 40 on the first row of electrochemical cells 10, radially relative to the axis of each of the electrochemical cells of the first row of electrochemical cells (step E5), therefore in the direction DEC.
- step E6 Supply of electrochemical cells from a second row of electrochemical cells (step E6), deposit of each electrochemical cell 10 of this second row radially relative to its central axis on the inter-row holding element 40 (step E7) by forming a second row of electrochemical cells.
- inter-row holding elements 40 and other electrochemical cells 10 of other rows are provided successively and these holding elements and these electrochemical cells are deposited or stacked in a manner similar to those deposited previously, therefore according to the DEC management.
- two inter-row holding elements 40 and two rows of additional electrochemical cells 10 are provided and deposited.
- step E8 provision of a second end holding element 42.
- step E9 Deposition of the second end holding element 42 on the second row of electrochemical cells or on one of the rows of additional cells (step E9), radially relative to the axis of each of the electrochemical cells of the row of electrochemical cells associated, therefore according to the DEC management.
- This part of the electrochemical module is a successive stack of holding elements 36 and electrochemical cells 10, in this case a stack of a first end holding element 42 , a row of electrochemical cells 10, an inter-row holding element 40, a row of electrochemical cells 10, ..., and a second end holding element 42.
- the first terminal flange 50 is deposited on the axial ends of the electrochemical cells, extending beyond the holding surfaces 38. This deposition is carried out according to an axial movement along the central axes X-X of the electrochemical cells 10. This axial movement is shown in the figure 1 1 as DEB management.
- the stack of holding elements 36 and electrochemical cells 10 is compressed or tightened.
- the thermal bridge elements 54 are inserted into the thermal bridge housings 66 and the first end flange 50 is fixed, together with the thermal bridge elements to the holding elements 36, in this case by screwing.
- the second end flange 70 is deposited on the other axial ends of the electrochemical cells 10, protruding from the holding surfaces 38 on the opposite side to the first end flange 50.
- This deposition is also carried out in an axial movement along the central axes XX of the electrochemical cells 10. This movement is indicated in Figures 3 and 10 as direction DEB. Where appropriate, before this deposition or simultaneously, the stack of holding elements 36 and electrochemical cells 10 is compressed or tightened.
- the second end flange 70 is fixed to the holding elements 36, in this case by screwing.
- the structure of the electrochemical module according to the invention is advantageous, in particular for the following reasons.
- the holding elements lead to efficient heat evacuation, particularly during thermal runaway of one or more electrochemical cells.
- the electrochemical module is reliable, particularly given that the superposition of the holding elements and the electrochemical cells leads to a low risk of damage to the insulating layer during assembly.
- the module is easy and economical to manufacture, among other things thanks to the extruded holding elements.
- the large contact surface between the holding elements and the electrochemical cells acts against swelling of the electrochemical cells and reduces the risk of rupture of the casing wall.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2203157A FR3134482B1 (fr) | 2022-04-06 | 2022-04-06 | Module pour assemblage de cellules électrochimiques, Assemblage électrochimique, Procédé de fabrication d’un élément de maintien et Procédé d’assemblage d’un module correspondants |
| PCT/EP2023/058751 WO2023194342A1 (fr) | 2022-04-06 | 2023-04-04 | Module pour assemblage de cellules électrochimiques, assemblage électrochimique, procédé de fabrication d'un élément de maintien et procédé d'assemblage d'un module correspondants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4505547A1 true EP4505547A1 (fr) | 2025-02-12 |
Family
ID=82942432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23717476.8A Pending EP4505547A1 (fr) | 2022-04-06 | 2023-04-04 | Module pour assemblage de cellules électrochimiques, assemblage électrochimique, procédé de fabrication d'un élément de maintien et procédé d'assemblage d'un module correspondants |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4505547A1 (fr) |
| FR (1) | FR3134482B1 (fr) |
| WO (1) | WO2023194342A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10238235A1 (de) * | 2002-08-21 | 2004-03-04 | Daimlerchrysler Ag | Elektrochemischer Energiespeicher mit Wärmeaustauscherstruktur und mehreren elektrochemischen Speicherzellen |
| WO2008099602A1 (fr) * | 2007-02-16 | 2008-08-21 | Panasonic Corporation | Unité de stockage en énergie électrique |
| DE102010009063A1 (de) * | 2010-02-23 | 2011-08-25 | Auto-Kabel Managementgesellschaft mbH, 79688 | Halteelement für elektrische Energiespeicher |
| CN203491315U (zh) | 2010-10-01 | 2014-03-19 | 格拉弗技术国际控股有限公司 | 电池组 |
| US20130183666A1 (en) | 2012-01-18 | 2013-07-18 | Marc N. Feiglin | Partial genotyping by differential hybridization |
| WO2019028513A1 (fr) * | 2017-08-08 | 2019-02-14 | Cape Bouvard Technologies Pty Ltd | Structure composite produisant de l'énergie électrique |
-
2022
- 2022-04-06 FR FR2203157A patent/FR3134482B1/fr active Active
-
2023
- 2023-04-04 WO PCT/EP2023/058751 patent/WO2023194342A1/fr not_active Ceased
- 2023-04-04 EP EP23717476.8A patent/EP4505547A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3134482B1 (fr) | 2024-11-22 |
| WO2023194342A1 (fr) | 2023-10-12 |
| FR3134482A1 (fr) | 2023-10-13 |
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