EP4082061A1 - Dispositif electrochimique de type batterie, comprenant des moyens d'etancheite perfectionnes, et son procede de fabrication - Google Patents
Dispositif electrochimique de type batterie, comprenant des moyens d'etancheite perfectionnes, et son procede de fabricationInfo
- Publication number
- EP4082061A1 EP4082061A1 EP20829678.0A EP20829678A EP4082061A1 EP 4082061 A1 EP4082061 A1 EP 4082061A1 EP 20829678 A EP20829678 A EP 20829678A EP 4082061 A1 EP4082061 A1 EP 4082061A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical connection
- stack
- support
- connection support
- elementary
- 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
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- 238000007789 sealing Methods 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 28
- 238000005538 encapsulation Methods 0.000 claims abstract description 62
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 238000010292 electrical insulation Methods 0.000 claims abstract description 10
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- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
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- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000012777 electrically insulating material Substances 0.000 claims description 2
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- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000010405 anode material Substances 0.000 claims 1
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- 238000009413 insulation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 23
- 239000010408 film Substances 0.000 description 19
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 16
- 229910001416 lithium ion Inorganic materials 0.000 description 16
- 230000006870 function Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
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- 229910052782 aluminium Inorganic materials 0.000 description 6
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 4
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- 229910052744 lithium Inorganic materials 0.000 description 4
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
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- 238000005265 energy consumption Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
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- 239000011244 liquid electrolyte Substances 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 229910002804 graphite Inorganic materials 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M10/052—Li-accumulators
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
-
- 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
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
-
- 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
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
-
- 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
- H01M10/0463—Cells or batteries with horizontal or inclined electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
-
- 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
Definitions
- the present invention relates to electrochemical devices, of the battery type. It can very particularly be applied to lithium ion batteries.
- the invention relates to a novel battery architecture, which gives them improved sealing properties.
- the invention also relates to a method of manufacturing these batteries.
- oxygen and water (H20) in the gas phase degrade them.
- lithium ion batteries are very sensitive to water in the gas phase.
- the market requires a lifespan of more than 10 years; it is necessary to be able to have an encapsulation which makes it possible to guarantee this lifespan.
- the active materials of lithium ion batteries are very sensitive to air and in particular to water in the gaseous phase.
- Mobile lithium ions react spontaneously with traces of water to form LiOH, leading to calendar aging of the batteries.
- All lithium ion conductive insert materials and electrolytes are not reactive with moisture.
- LUTisO ⁇ does not deteriorate on contact with the atmosphere or traces of water.
- the inserted lithium surplus (x) is, for its part, sensitive to the atmosphere and reacts spontaneously with the traces of water to form LiOH. The reacted lithium is then no longer available for storing electricity, leading to a loss of battery capacity.
- a first object of the invention is an electrochemical device, of battery type, comprising a so-called elementary stack (2) formed by at least one elementary cell, each elementary cell successively comprising at least one anode current collector substrate, at least one layer anode, at least one layer of an electrolyte material or of a separator impregnated with an electrolyte, at least one cathode layer, and at least one cathode current collector substrate, said elementary stack defining six faces, namely two so-called mutually opposite front faces (21 and 22), generally parallel to the layers of anode, of electrolyte material and of cathode, as well as four so-called lateral faces (23 to 26) two with two mutually opposed, in particular mutually parallel, anode contact means (30), cathodic contact means (40), sealing means (7), which are suitable for protecting said stack, characterized in that this device further comprises an electrical connection support (5), made at least in part of a conductive material, provided in the vicinity of a first end face (12) of said elementary
- the sealing means comprise an encapsulation system (7).
- said encapsulation system (7) covers the other end face (11) of said elementary stack, the anode contact means, the cathode contact means, as well as at least part of the face (51) of said electrical connection support (5), which is turned towards said elementary stack, said encapsulation system covers the opposite end faces of said elementary stack, as well as the side faces of said stack which are not covered by the anode and cathode contact means, said system of encapsulation further occupying, optionally, all or part of the electrical insulation means (53, 54), as well as the intermediate space separating the support and said first front face of the elementary stack, the sealing means comprise said means contact means and / or said cathodic contact means.
- the encapsulation system is chosen from: a dense inorganic film deposited by a technique selected from ALD, PECVD or HDPCVD, with a total thickness less than 5 ⁇ m, and preferably less than 2 ⁇ m, or a succession of inorganic films with a total thickness of less than 5 ⁇ m, preferably less than 2 ⁇ m, or a succession of organic and inorganic films with a total thickness of less than 20 ⁇ m, preferably less than 10 ⁇ m.
- the mechanical stiffening system is chosen from: a resin, which may consist of a simple polymer or a polymer comprising a polymer matrix, which is preferably a polymer of epoxy type or of acrylate type, and a mineral filler, which may consist of particles, flakes or glass fibers; a low-melting point glass, preferably selected from the group formed by: S1O2-B2O3 glasses, B12O3-B2O3 glasses, Z h O-B ⁇ 2q3-B2q3 glasses, TeC> 2- V2O5 glasses, PbO glasses -SiC>2; a film produced by lamination.
- a resin which may consist of a simple polymer or a polymer comprising a polymer matrix, which is preferably a polymer of epoxy type or of acrylate type, and a mineral filler, which may consist of particles, flakes or glass fibers
- a low-melting point glass preferably selected from the group formed by: S1O2-B2O3 glasses, B
- the sealing means are coated after having put in place the electrical connection support in the vicinity of the first front face of the elementary stack. at least part of the sealing means before placing the electrical connection support in the vicinity of the first front face of the elementary stack. at least a first layer of the sealing means is coated before placing the electrical connection support in the vicinity of the first front face of the elementary stack, then at least a second layer of the sealing means is coated after having placed said said electrical connection support in the vicinity of said first end face.
- This method further comprises supplying a frame (105) intended to form a plurality of supports (5) placing said frame in the vicinity of the first front face of a plurality of elementary stacks, these stacks being arranged along several lines and / or several rows, the production of at least one cutout, in particular several cutouts in the longitudinal direction and / or the lateral direction of these stacks, so as to form a plurality of electrochemical devices.
- FIG. 1 is a longitudinal sectional view illustrating a battery forming an electrochemical device according to a first embodiment of the invention.
- FIG. 2 is a top view, illustrating a frame involved in the manufacture of the battery according to the invention, illustrated in Figure 1.
- FIG. 4 is a top view, illustrating a second step of a method of manufacturing the battery according to the invention.
- FIG. 5 is a top view illustrating a third step of a method of manufacturing the battery according to the invention.
- FIG. 6 is a top view illustrating a fourth step of a method of manufacturing the battery according to the invention.
- FIG. 7 is a top view, illustrating a fifth step of a method of manufacturing the battery according to the invention.
- FIG. 8 is a top view illustrating a sixth step of a method of manufacturing the battery according to the invention.
- FIG. 9 is a longitudinal sectional view, illustrating the various constituent elements of the battery, put in place at the end of the first step above.
- FIG. 10 is a longitudinal sectional view, illustrating the various constituent elements of the battery, put in place at the end of the second step above.
- FIG. 11 is a longitudinal sectional view, illustrating the various constituent elements of the battery, put in place at the end of the third step above.
- FIG. 12 is a longitudinal sectional view, illustrating the various constituent elements of the battery, put in place at the end of the fourth step above.
- FIG. 13 is a longitudinal sectional view, illustrating the various constituent elements of the battery, put in place at the end of the fifth step above.
- FIG. 14 is a top view, similar to Figure 2, illustrating a support frame for manufacturing a battery forming a variant of the first embodiment of the invention.
- FIG. 15 is a longitudinal sectional view, illustrating a battery according to the invention, which can be obtained from the frame illustrated in Figure 14.
- FIG. 16 is a top view, similar to Figure 2, illustrating a support frame for manufacturing an electrochemical device according to another variant of the first embodiment of the invention.
- FIG. 17 is a longitudinal sectional view, illustrating an electrochemical device according to the invention, which can be obtained from the frame illustrated in Figure 16.
- FIG. 18 is a schematic view, illustrating the integration of an electrochemical device according to the invention in an energy consuming device.
- FIG. 19 is a view in longitudinal section, illustrating an alternative embodiment of the process step described in FIG. 10.
- FIG. 20 is a view in longitudinal section, illustrating an alternative embodiment of the process step described in FIG. 11.
- FIG. 21 is a longitudinal sectional view, similar to Figure 20, illustrating an additional step of the process for producing an electrochemical device of the invention.
- FIG. 22 is a front view, similar to Figure 1, illustrating on a larger scale an alternative embodiment of the encapsulation system according to the invention.
- FIG. 24 is a perspective view, illustrating a variant of the stacked layers of FIG. 23.
- FIG. 26 is a perspective view, illustrating the various constituent elements of a conductive support, of an enriched structure, belonging to an electrochemical device according to a variant of the second embodiment of FIG. 25.
- FIG. 29 is a perspective view, similar to FIG. 28, illustrating yet another variant of the conductive support according to the second embodiment.
- Each of these elementary cells successively comprises at least one anode current collector substrate, at least one anode layer, at least one layer of an electrolyte material or of a separator impregnated with an electrolyte, at least one layer cathode, and at least one cathode current collector substrate.
- This stack is of a type known per se, so that it will not be described in more detail in what follows. Typically, this stack comprises between 10 and 100 elementary cells, as described above.
- This stack 2 of the generally parallelepipedic type, has six faces. We note first 21 and 22 the opposite end faces which, by convention, are substantially parallel to the various layers above. 21 designates the so-called front end face and 22 the so-called rear end face which, as will be seen in the following, allows the attachment of a support.
- Stack 2 further defines four side faces 23 to 26, which are 2 to 2 mutually parallel and opposite.
- the battery 1 according to the invention further comprises a support, generally designated the reference 5.
- This support 5, which is generally flat, typically has a thickness of less than 300 ⁇ m, preferably less than 100 ⁇ m.
- This support is advantageously made of an electrically conductive material, typically metallic material, in particular aluminum, copper, stainless steel which can be coated in order to improve their weldability property with a thin layer of gold, nickel and tin.
- electrically conductive material typically metallic material, in particular aluminum, copper, stainless steel which can be coated in order to improve their weldability property with a thin layer of gold, nickel and tin.
- the support and the stack are mutually secured by a layer 6.
- the latter is typically formed by means of a non-conductive adhesive, in particular of the epoxy or acrylate type.
- the thickness of this layer 6 is typically between 5 and 100 ⁇ m, in particular close to 50 ⁇ m.
- this layer at least partially covers the spaces 53 and 54 above, so as to mutually isolate the anodic and cathodic contact members as will be detailed below.
- the support 5 provides an additional electrical connection function, in that it is electrically connected to the stack 2 described above.
- this electrical connection is provided by means of pads 30 and 40, forming respectively anodic and cathodic contact members.
- These pads 30 and 40 are made of a suitable conductive material, in particular of a conductive glue such as for example a graphite glue, glue loaded with metallic nanoparticles (Au, Cu, Al, etc.).
- the metal charges can be different for the anode and the cathode (typically Al for the cathode, Cu for the anode).
- these pads not only perform their initial function of electrical connection, but also an additional function of mechanical connection between the stack and the support.
- This encapsulation system 7 can be made of any material, making it possible to ensure a sealing function. Within the meaning of the invention, this function is performed by any encapsulation system which preferably has a water vapor permeance (WVTR or “WVTR” coefficient) of less than 10 -5 g / m 2 .d . It will be chosen for example to deposit: a dense inorganic film by ALD, PECVD HDPCVD less than 5 ⁇ m and preferably less than 2 ⁇ m.
- the inorganic film may be made of S1O 2 , S1 3 N 4 , SiC, amorphous Si, Al 2 O 3, a succession of inorganic films with a total thickness of less than 5 ⁇ m and preferably less than 2 ⁇ m.
- the inorganic films can be in S1O 2 , S1 3 N 4 , SiC, amorphous Si, AI 2 O 3 deposited using any dry or wet technique (PECVD, PVD, ALD, Spray coating + UV conversion, Sol - gel, etc. ), a succession of organic and inorganic films less than 20 ⁇ m and preferably less than 10 ⁇ m.
- the inorganic films can be in S1O2, S1 3 N 4 , SiC, Si amorphous, deposited using a dry or wet technique (PECVD, PVD, ALD, Spray coating + UV conversion, Solgel, etc.).
- the organic films can be polymeric (PVDF, Parylene, Acrylates, etc.).
- the encapsulation material 7 also advantageously occupies the free spaces 53 54 of the support 5.
- the stiffening material 8 also advantageously fills these free spaces, by being intimately linked to the encapsulating material.
- the references 7 and 8, as well as 53 and 54 have been placed in the same zones corresponding to these free spaces, in order to visualize their filling by these various materials.
- This stiffening system 8 can be made of any material, making it possible to ensure this function of mechanical rigidity.
- a resin which may consist of a simple polymer or a polymer loaded with inorganic fillers will be chosen.
- the polymer matrix may be of the family of epoxies, acrylates, fluoropolymers for example, the fillers possibly consisting of particles, flakes or glass fibers.
- this stiffening system 8 can provide an additional barrier function against humidity.
- a glass with a low melting point will be chosen, thus ensuring mechanical resistance and an additional barrier to humidity.
- This glass can, for example, be of the S1O2-B2O3 family; B12O3-B2O3, ZhO-B ⁇ 2q3-B2q3, Te02-V20s, PbO-Si02.
- the thickness of the encapsulation system 7 is advantageously very small, in particular less than 20 ⁇ m, preferably 10 ⁇ m.
- the stiffening system 8 has a much greater thickness than that of the encapsulation system 7.
- E8 denotes the smallest thickness of this stiffening system, at the level of the covering of the front face. stacking.
- this thickness E8 is between 20 and 250 ⁇ m, typically close to 100 ⁇ m.
- the battery 1 according to the invention has the overall shape of a parallelepiped.
- stack 2 there are 11 and 12 its front and rear end faces, as well as 13 to 16 its various side faces.
- the thickness E1 of the battery is for example between 0.5 and 2.5mm, while its transverse dimensions L1 and 11 are for example between 1 and 4mm.
- the device 1000 further comprises an energy consuming element 1004, as well as connection lines 1006 1007 electrically connecting the regions 56 57 of the support 5 with this element 1004.
- the control can be provided by a component of the battery itself, according to the embodiment described below with reference to FIG. 16, and / or by a component not shown belonging to the device 1000.
- an energy consumption device can be an electronic circuit.
- an electronic circuit of clock type such as an RTC component, Real Time Clock
- an electronic circuit of volatile memory type such as an RTC component, Real Time Clock
- a circuit microprocessor type electronics such as an electronic circuit of the watchdog timer type, a liquid crystal display type component, an LED (Light Emitting Diode) component, u n electronic circuit of the voltage regulator type (such as a low-drop voltage regulator circuit, abbreviated LDO, Low-dropout regulator), an electronic component of the CPU (Central Processing Unit) type.
- a support frame is advantageously used 104, which is intended to form a plurality of supports 4.
- This frame 104 which is shown on a large scale in FIG. 2, has a peripheral edge 150, as well as a plurality of blanks 151, each of which allows the manufacture of blanks. 'a respective battery.
- This strip is electrically separated vis-à-vis this sole, by means of a space 453. Furthermore, the LDO component rests, via additional layers of conductive adhesive 492493, on the one hand on the aforementioned area 457 and on a side strip 490 of the support. This range and this band 490 are mutually isolated, by a space 491.
- the assembly formed by the stack 2, the encapsulation 7 as well as the contact members 30 and 40 can be placed on the support 5 without additional encapsulation. It should be noted in this regard that this assembly 2, 7, 30, 40 is perfectly sealed, thanks to the nature of the encapsulation and of the contact members. In this way, stack 2 is protected against the entry of potentially harmful gases.
- each elementary stack can optionally be covered with an encapsulation layer, the latter itself possibly being covered with a stiffening layer.
- the encapsulation layer makes it possible to produce a plurality of encapsulation systems, while the stiffening layer allows for a plurality of stiffening systems.
- the presence of a stiffening layer makes it possible in particular to preserve the integrity of the various elements when cutting with a saw. On the other hand, in the case of laser cutting, this stiffening layer may be superfluous.
- the first main embodiment of the invention uses a conductive support, which is monolayer.
- this single-layer support can be of the perforated type, such as a metal grid.
- FIGS. 26 and 27 illustrate an advantageous variant embodiment, forming part of this second main embodiment.
- the support 705 is formed of a plurality of layers arranged one below the other, 5 in number in this exemplary embodiment.
- This layer 756 which is mainly formed by a polymer material, such as epoxy resin, is provided with 2 inserts 757.
- the latter which are made of a conductive material, in particular metallic, are intended to cooperate with the respectively anode contacts. and cathode of the battery. It will be noted that these inserts 757 are mutually isolated, thanks to the epoxy resin of the layer 756.
- the various conductive inserts 757,759,762,765 and 767 define conductive paths denoted 753754. These conductive paths, which are mutually insulated, either by the layers 756,758,764 and 766, or by the discs 761, make it possible to electrically connect the opposite end faces of the support 705. Once the support 705 is supplied, it is placed against the underside of the elementary stack 702, then steps similar to those described above with reference to FIGS. 2 are implemented. at 12.
- the stack of this second embodiment can be placed on its conductive support, such as that 705, according to different variants. It is first of all possible to provide, as described above, to place this uncoated stack on the support, then to add the encapsulation and possibly the stiffening film. It is also possible to provide for placing this stack, already coated in a sealed manner, on its support without carrying out additional operations: this possibility is to be compared with the teaching of Figures 19 and 20. Finally, provision can be made to place the coated stack on the support, then to subject it to an additional encapsulation: this possibility is to be compared to the teaching of FIG. 21.
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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)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Computer Hardware Design (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Primary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1915566A FR3105602B1 (fr) | 2019-12-24 | 2019-12-24 | Dispositif électrochimique de type batterie, comprenant des moyens d’étanchéité perfectionnés, et son procédé de fabrication |
PCT/IB2020/062375 WO2021130688A1 (fr) | 2019-12-24 | 2020-12-23 | Dispositif electrochimique de type batterie, comprenant des moyens d'etancheite perfectionnes, et son procede de fabrication |
Publications (1)
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EP4082061A1 true EP4082061A1 (fr) | 2022-11-02 |
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EP20829678.0A Pending EP4082061A1 (fr) | 2019-12-24 | 2020-12-23 | Dispositif electrochimique de type batterie, comprenant des moyens d'etancheite perfectionnes, et son procede de fabrication |
Country Status (10)
Country | Link |
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US (1) | US20230031684A1 (fr) |
EP (1) | EP4082061A1 (fr) |
JP (1) | JP2023508067A (fr) |
KR (1) | KR20220119476A (fr) |
CN (1) | CN115176368A (fr) |
CA (1) | CA3162494A1 (fr) |
FR (1) | FR3105602B1 (fr) |
IL (1) | IL293902A (fr) |
TW (1) | TW202133477A (fr) |
WO (1) | WO2021130688A1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US5561004A (en) | 1994-02-25 | 1996-10-01 | Bates; John B. | Packaging material for thin film lithium batteries |
US20020071989A1 (en) | 2000-12-08 | 2002-06-13 | Verma Surrenda K. | Packaging systems and methods for thin film solid state batteries |
US9793522B2 (en) * | 2014-08-13 | 2017-10-17 | Verily Life Sciences Llc | Sealed solid state battery |
FR3068830B1 (fr) * | 2017-07-06 | 2019-08-02 | I-Ten | Systeme d'encapsulation pour composants electroniques et batteries |
FR3080952B1 (fr) * | 2018-05-07 | 2020-07-17 | I-Ten | Electrolyte pour dispositifs electrochimiques en couches minces |
FR3091036B1 (fr) | 2018-12-24 | 2024-04-19 | I Ten | Procede de fabrication de batteries, et batterie obtenue par ce procede |
-
2019
- 2019-12-24 FR FR1915566A patent/FR3105602B1/fr active Active
-
2020
- 2020-12-23 CN CN202080097491.XA patent/CN115176368A/zh active Pending
- 2020-12-23 EP EP20829678.0A patent/EP4082061A1/fr active Pending
- 2020-12-23 CA CA3162494A patent/CA3162494A1/fr active Pending
- 2020-12-23 JP JP2022538933A patent/JP2023508067A/ja active Pending
- 2020-12-23 IL IL293902A patent/IL293902A/en unknown
- 2020-12-23 KR KR1020227025672A patent/KR20220119476A/ko unknown
- 2020-12-23 WO PCT/IB2020/062375 patent/WO2021130688A1/fr unknown
- 2020-12-23 US US17/788,507 patent/US20230031684A1/en active Pending
- 2020-12-24 TW TW109145892A patent/TW202133477A/zh unknown
Also Published As
Publication number | Publication date |
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CA3162494A1 (fr) | 2021-07-01 |
WO2021130688A1 (fr) | 2021-07-01 |
FR3105602B1 (fr) | 2024-05-10 |
KR20220119476A (ko) | 2022-08-29 |
FR3105602A1 (fr) | 2021-06-25 |
CN115176368A (zh) | 2022-10-11 |
IL293902A (en) | 2022-08-01 |
TW202133477A (zh) | 2021-09-01 |
JP2023508067A (ja) | 2023-02-28 |
US20230031684A1 (en) | 2023-02-02 |
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