EP4252300A1 - Ensemble de stockage électrochimique structurel pour un véhicule automobile - Google Patents
Ensemble de stockage électrochimique structurel pour un véhicule automobileInfo
- Publication number
- EP4252300A1 EP4252300A1 EP21811079.9A EP21811079A EP4252300A1 EP 4252300 A1 EP4252300 A1 EP 4252300A1 EP 21811079 A EP21811079 A EP 21811079A EP 4252300 A1 EP4252300 A1 EP 4252300A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrochemical
- blocks
- electrochemical storage
- storage elements
- assembly
- 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
- 238000003860 storage Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000012983 electrochemical energy storage Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 3
- 239000007784 solid electrolyte Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 17
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000003754 machining Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 210000004457 myocytus nodalis Anatomy 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/04—Arrangement of batteries
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- 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
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- 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
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
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- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the invention relates to a structural electrochemical storage assembly, in particular to an electrical and structural energy storage assembly of a motor vehicle.
- the invention provides a structural electrochemical storage assembly for a motor vehicle, which comprises at least one electrochemical energy storage device which comprises:
- each electrochemical storage element being composed of a solid electrolyte cell and two external current collector means consisting of a negative current collector means and a positive current collector means surrounding the cell, said electrochemical storage elements being electrically interconnected, an electrically insulating sheet also being disposed separately from the electrochemical storage elements constituting a given block,
- said structural assembly according to the invention comprises a beam comprising two hollow profiles and open on one of their faces, assembled together by their respective said open face and along their respective edges, said profiles containing said electrochemical device energy storage, and said two sections being dimensioned and assembled to maintain compressed said piece of compressible material arranged between said at least two superposed electrochemical blocks, so as to ensure electrical contact between the components of said electrochemical elements of the blocks.
- the contact between the beam and the electrochemical energy storage device is ensured by the current collectors of the electrochemical storage elements in the beam which are directly in contact with the inner face of the respective longitudinal wall of said profiles.
- said electrically insulating sheet is arranged between two electrochemical storage elements, between a current collector of a cell and the immediately adjacent current collector of an adjacent cell.
- the two hollow sections are open on one of their longitudinal faces.
- they have a U-shaped cross-section.
- said two sections are assembled by interlocking along their said edges by securing means with complementary notches between them, located on respective parts of said sections adapted to come opposite one another.
- one of said profiles has notches on the inner part of its edges and hollowed out on an end portion of its edges and along a thickness less than that of its edges so as to form a stop
- the other says profile comprises notches of a shape complementary to the shape of those of said one of said profiles, located on the outer part of its edges and hollowed out on an end portion of its edges and along a thickness less than that of said edges so as to form a stop.
- said electrochemical energy storage device comprises two groups of two superimposed blocks of electrochemical storage elements, and a piece of compressible material arranged between the blocks of respective electrochemical storage elements of each said group, said groups of two superimposed blocks being arranged leaving a free zone between them, receiving said interconnection current collector and, where appropriate, means of a regulation system of said storage device.
- said interconnect current collector comprises a current collector screw.
- said beam comprises a passage for an end portion of said screw.
- one of said sections comprises a machining forming the passage of said interconnection current collector, in particular of said end portion of said screw.
- said beam in particular said profiles, are made of extruded aluminum.
- said electrochemical storage elements of a given block are electrically connected together in a series configuration and the blocks are electrically connected together in a parallel configuration.
- a said block comprises four electrochemical storage elements mounted in series, and said blocks are interconnected in parallel, so that said electrochemical energy storage device is mounted according to a configuration of 4P4S type coupling.
- said piece of compressible material is a sheet or plate extending at least over the entire surface of the electrochemical device, between the blocks.
- said part is made of rubber foam, in particular of EPDM rubber foam.
- the solid electrolyte is a polymer, for example of the PVDF type.
- the invention also relates to a motor vehicle comprising a structural electrochemical storage assembly as defined above.
- said assembly is integrated as a structural component of the vehicle body.
- the invention also relates to a method of manufacturing a structural electrochemical storage assembly as defined above, in which pressure is applied on either side of said beam during assembly to assemble said two sections making up the beam and compressing said sheet of compressible material.
- Said profiles are firmly attached to each other by interlocking thanks to the securing means with complementary notches which makes it possible to keep the beam closed with its contents.
- the assembly is compressed up to the respective stops of the two profiles.
- the compressible part thus compressed exerts a pressure (by its tendency to want to re-expand) on the electrochemical storage elements of the blocks and thus allows the contacting of the components to activate the electrochemical process.
- the electrical contact, in particular negative, is ensured by the current collectors, in particular negative, of the upper and lower electrochemical storage elements in the beam which are brought directly into contact with the inner face of the respective longitudinal wall of the sections. In the particular case of negative contact between the beam and the current collectors of the storage elements, the beam is then at negative potential.
- Said central current collector collecting the interconnection current is connected to the positive power connector.
- FIG. 1 schematically represents in cross section in a median plane and according to a perspective view, a structural electrochemical storage assembly according to the invention.
- FIG. 2 schematically represents, according to a partial perspective and exploded view, the components of said structural assembly represented in FIG. 1.
- FIG. 3 schematically represents, according to a partial perspective and exploded view, the components of an electrochemical element of said structural assembly represented in FIGS. 1 or 2.
- FIG. 4 schematically represents, in a partial perspective view, the assembly of components of the electrochemical energy storage device of said structural assembly represented in FIGS. 1 to 3.
- FIG. 5 schematically represents in cross section in a median plane the assembly represented in figure 4.
- FIG. 6 schematically shows in cross section a structural component of said structural assembly shown in Figure 1.
- FIG. 7 schematically shows in a partial perspective view the assembly of components of said structural assembly shown in Figures 1 to 6.
- FIG. 8 schematically represents, in a perspective view, a structural electrochemical storage assembly according to the invention integrating the various components represented in FIGS. 1 to 7.
- FIG. 9 schematically represents, in a partial perspective view, a vehicle integrating a structural electrochemical storage assembly according to the invention as represented in FIG. 8.
- an XYZ reference of the vehicle in which X represents the longitudinal front-rear direction of the vehicle, oriented towards the rear, Y the transverse direction of the vehicle, oriented towards the right, and Z the direction vertical pointing towards the top of the vehicle.
- Figure 1 schematically shows in cross section in a median plane VT and in a perspective view, part of a structural electrochemical storage assembly according to the invention. Said assembly is more particularly intended to form part of the structure of a motor vehicle.
- Said structural electrochemical storage assembly comprises a beam 11 in which is included an arrangement of electrochemical blocks 4 each composed of all-solid electrochemical storage elements 1, separated by electrically insulating sheets 5. According to the example there is four blocks 4, superimposed in pairs and between which is arranged a compressed sheet 8. The blocks are interconnected by a central current collector 9 comprising a screw 90. According to the example, said assembly further comprises a regulation system of the electrochemical energy storage device, to manage the battery that said assembly will constitute for the motor vehicle.
- FIG. 3 illustrates, in an exploded view and in perspective, an example of an electrochemical storage element 1 composed of an all-solid electrochemical cell 10 and current collectors 20, 30
- an electrochemical cell 10 is used which is a lithium-polymer cell consisting of an alternating stack of cathodes and anodes, comprising ten (pure) lithium anodes and nine polymer cathodes.
- PVDF polymer for the cathode
- the cell has a nominal voltage of 3.6V and an available current of 30Ah.
- the dimensions are 400X100X5 mm.
- Said cell 10 is framed by a positive aluminum collector 20 and a negative copper collector 30.
- Each collector 20, 30 has the shape of a plate with the dimensions of the electrochemical cell 10, with a longitudinal side rim respectively referenced 200, 300 extending over the entire length of the plate, one 20 is placed on a main face 100 of the cell and the other 30 on the opposite face 101 and so that said respective side edges 200, 300 of the collectors do not border the same side of cell 10.
- an electrochemical block 4 consists of a stack of four electrochemical storage elements 1, each said element being constituted as described above with reference to FIG. 3.
- the block therefore also has a parallelepipedic shape comprising two opposite main faces, two opposite longitudinal sides and two opposite transverse sides.
- each storage element in said block is further insulated on its main faces by an electrically insulating sheet material 5, for example a polyimide film known as "Kapton” (registered trademark ), in particular arranged between two adjacent elements.
- an electrically insulating sheet material for example a polyimide film known as "Kapton” (registered trademark ), in particular arranged between two adjacent elements.
- connection between two adjacent electrochemical storage elements 1 of a given block is made by a connector 6 made of a two-component aluminium/copper material, welded to the respective collectors of said adjacent elements.
- the electrochemical unit thus comprises three connectors.
- Said electrochemical elements 1 of the block are connected in series.
- Said block thus has a 4S type coupling configuration Furthermore said block 4 is provided with side plates 70, electrically insulating, which are positioned on each side of the electrochemical storage elements composing it.
- the electrochemical unit 4 is positioned on a compression part 8, according to the example a compressible plate made of EPDM rubber foam.
- This compression piece is of adequate shape and dimensions to fit into the beam.
- the electrochemical energy storage device comprises four electrochemical blocks 4, arranged two by two on either side of this compression part 8.
- the blocks 4 are superimposed in pairs around said compressible piece 8, and each group of two blocks being superimposed, separated by said compressible piece.
- these two groups of electrochemical blocks are arranged one behind the other along the longitudinal direction L of a block and of the beam, i.e. along the transverse direction Y of the vehicle shown in FIG. non-limiting example.
- This central interconnection current collector is equipped with a current collector screw 90.
- This central zone 80 comprises at least one orifice 800, forming a passage for the various components of said central collector 9, in particular for said current collector screw 90 .
- the resulting electrochemical storage device thus has a configuration of the 4P4S type (4 blocks in parallel of 4 cells in series).
- said storage device has an available current of 120 Ah, a voltage of 14.4 V and an energy of 1.728 kWh.
- said central zone 80 of the compression plate 8 further comprises another orifice 801, forming a passage for the various components of an electrical harness 12 whose function is to give the information (of the voltage, temperature, etc. type) to the regulation system of the storage device, a system commonly referred to by its English acronym BMS (Battery Management System).
- An insulating plate 71 is positioned at the outer end of each group of two superimposed blocks 4 (see Figure 7).
- this electrochemical device is placed in a beam 11, as shown in FIG. 7, beam which is a structural element of the vehicle.
- the beam 11 comprises a first half-beam 111 and a second half-beam 112 provided with machinings to fix the signal connector 13 (machining 1123) and the power connector positive (1124 machining).
- Said beam further comprises two end closure elements 113 positioned at each end of said beam, that is to say at the end of the half-beams 111, 112 once assembled.
- each half-beam 111, 112 has an internally hollow shape. It is in the form of a profile with a U-shaped cross-section, one of its longitudinal faces is thus open.
- Each half-beam 111, 112 comprises opposite cavities 1112, 1122 so that they can be held together according to a notch closure system, sometimes called a rack. Said indentations are therefore in the form of notches. These footprints extend along its longitudinal edges (branches of the U) 1111, 1121, edges also called longitudinal edges 1111, 1121.
- One of the half-beams 111 has its footprints 1112 on the inner part of its edges 1111 and dug on an end portion of said flanges and following a thickness less than that of the flanges so as to form an abutment 11110.
- the other half-beam 112 has its indentations 1122 on the outer part of its flanges 1121 and also dug on a end portion of said flanges and following a thickness less than that of said flanges so as to form a stop 11210.
- the interior impressions of one of the half-beams can thus fit together with the exterior impressions of the other half-beam , so as to secure the two half-beams together and then to assemble them firmly under pressure.
- the electrochemical energy storage device is thus positioned in a first half-beam 111, said device having the shape and dimensions adapted to those inside said half-beam.
- the other half-beam 112 is then placed above that 111 containing said electrochemical device in order to close the assembly by forming a beam 11.
- the two half-beams are held in place together thanks to the first notches of the system closing.
- the signal connector 13 is put in place at the level of the machining provided for this purpose 1123 in the second half-beam 112.
- a power insulator 14 is also put in place which is placed around the screw 90 of the central current collector 9, at the level of the other machining 1124 provided for the positive power connector in the second half-beam 112.
- the assembly is then placed under a press.
- the assembly is compressed under a pressure P up to the abutment of the two half-beams 111, 112, up to their respective abutments 11110, 11210. notch system to close the beam 11 with its content.
- the compressible part 8 in the central part is then compressed. It is she who exerts a pressure (by her tendency to want to re-expand) on the electrochemical storage elements 1, in particular the electrochemical cells 10 of the blocks 4 and which thus allows the contacting of the constituents of said cells and consequently activates the electrochemical process.
- the negative contact is in particular ensured by the copper negative current collectors 3 of the upper and lower electrochemical storage elements 1 which are directly in contact with the aluminum half-beams 111, 112. Beam 11 is then at negative potential.
- the closing of the beam 11 is completed by the positioning of the end closing elements 113 at each end of the beam (see FIG. 8).
- a weld is made, for example by fusion, along the external junction line of the two half-beams and between the half-beams and the end closing elements 113. Then performs the establishment of the wiring 15 and the insulation at the tip of the screw 90 of the central current collector 9 (see Figure 8) for the positive power connector.
- the beam thus produced provides an electrochemical storage assembly which will form a structural element of the vehicle.
- the beam is assembled to the body C of the vehicle, here as a front cross member. Assembly to the vehicle can, for example, be achieved by structural bonding or screwing.
- the advantage of the all-solid electrochemical storage structural assembly according to the invention is that, in particular in the event of strong deformation of the structure of the vehicle, there is no thermal runaway at the level of the electrochemical device, and that it allows the use of dead volumes in the structure of a vehicle, in particular in aluminum profiles.
- An advantage is also its implementation with a compression piece and the use of two half-beams having a notch assembly system, assembling by pressure, pressure which both allows the assembly of the beam and the compression of the compressible part.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Dispersion Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2012167A FR3116656B1 (fr) | 2020-11-26 | 2020-11-26 | Ensemble de stockage électrochimique structurel pour un véhicule automobile |
PCT/EP2021/082423 WO2022112147A1 (fr) | 2020-11-26 | 2021-11-22 | Ensemble de stockage électrochimique structurel pour un véhicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4252300A1 true EP4252300A1 (fr) | 2023-10-04 |
Family
ID=74045961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21811079.9A Pending EP4252300A1 (fr) | 2020-11-26 | 2021-11-22 | Ensemble de stockage électrochimique structurel pour un véhicule automobile |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230402643A1 (fr) |
EP (1) | EP4252300A1 (fr) |
KR (1) | KR20230110728A (fr) |
CN (1) | CN116547859A (fr) |
FR (1) | FR3116656B1 (fr) |
WO (1) | WO2022112147A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2985690A3 (fr) * | 2012-01-17 | 2013-07-19 | Renault Sa | Batterie de puissance structurelle pour vehicule automobile |
EP3254323B1 (fr) | 2015-02-06 | 2023-09-27 | The Board of Trustees of the Leland Stanford Junior University | Composites de stockage d'énergie multifonction |
US11942597B2 (en) * | 2018-03-28 | 2024-03-26 | Honda Motor Co., Ltd. | Solid-state battery and solid-state battery module |
JP7042192B2 (ja) * | 2018-08-20 | 2022-03-25 | 本田技研工業株式会社 | 車両用バッテリ装置 |
CN209496928U (zh) * | 2019-04-12 | 2019-10-15 | 宁德时代新能源科技股份有限公司 | 一种电池模组 |
-
2020
- 2020-11-26 FR FR2012167A patent/FR3116656B1/fr active Active
-
2021
- 2021-11-22 US US18/253,453 patent/US20230402643A1/en active Pending
- 2021-11-22 KR KR1020237016500A patent/KR20230110728A/ko unknown
- 2021-11-22 WO PCT/EP2021/082423 patent/WO2022112147A1/fr active Application Filing
- 2021-11-22 CN CN202180078892.5A patent/CN116547859A/zh active Pending
- 2021-11-22 EP EP21811079.9A patent/EP4252300A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
CN116547859A (zh) | 2023-08-04 |
WO2022112147A1 (fr) | 2022-06-02 |
US20230402643A1 (en) | 2023-12-14 |
FR3116656B1 (fr) | 2022-10-14 |
FR3116656A1 (fr) | 2022-05-27 |
KR20230110728A (ko) | 2023-07-25 |
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