EP3311433A1 - Method for producing an electrochemical bundle for a metal-ion battery comprising metal foam at the ends of strips - Google Patents
Method for producing an electrochemical bundle for a metal-ion battery comprising metal foam at the ends of stripsInfo
- Publication number
- EP3311433A1 EP3311433A1 EP16732573.7A EP16732573A EP3311433A1 EP 3311433 A1 EP3311433 A1 EP 3311433A1 EP 16732573 A EP16732573 A EP 16732573A EP 3311433 A1 EP3311433 A1 EP 3311433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrochemical
- metal
- accumulator
- welded
- producing
- 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.)
- Withdrawn
Links
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
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- 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
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- 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 the field of electrochemical metal-ion generators, which operate according to the principle of insertion or deinsertion, or in other words intercalation-deintercalation, of metal ions in at least one electrode.
- a metal-ion electrochemical accumulator comprising at least one electrochemical cell constituted by an anode and a cathode on either side of a separator impregnated with electrolyte, two current collectors, one of which is connected to the anode and the other at the cathode, and a housing of elongated shape along a longitudinal axis (X), the housing being arranged to house the electrochemical cell with sealing while being traversed by a portion of the current collectors forming the terminals output, also called poles.
- the separator may consist of one or more films.
- the housing may include a lid and a container, usually called a bucket, or have a lid, a bottom and a side shell assembled at both the bottom and the lid,
- the present invention aims to provide a part of the electrical connection between at least one electrochemical cell of the accumulator and its output terminals integrated into its housing.
- the invention applies to any electrochemical metal-ion accumulator, that is to say also sodium-ion, magnesium-ion, aluminum-ion ...
- a lithium-ion battery or accumulator usually comprises at least one electrochemical cell C consisting of a separator impregnated with an electrolyte component 1 between a positive electrode or cathode 2 and a negative electrode or anode 3, a current collector 4 connected to the cathode 2, a current collector 5 connected to the anode 3 and finally, a package 6 arranged to contain the electrochemical cell with sealing while passing through a portion of the current collectors 4, 5, forming the output terminals.
- the architecture of conventional lithium-ion batteries is an architecture that can be described as monopolar, because with a single electrochemical cell comprising an anode, a cathode and an electrolyte.
- monopolar architecture geometry are known:
- the electrolyte constituent may be of solid, liquid or gel form.
- the constituent may comprise a polymer or microporous composite separator impregnated with organic electrolyte (s) or ionic liquid type which allows the displacement of the lithium ion from the cathode to the anode to a charge and vice versa for a discharge, which generates the current.
- the electrolyte is generally a mixture of organic solvents, for example carbonates in which is added a lithium salt typically LiPF6.
- Lithium cation insertion materials which are generally composite, such as lithium iron phosphate LiFePO 4 , lithium cobalt oxide LiCoO 2 , lithiated manganese oxide, optionally substituted, LiMn 2 0 4 or a Li-based
- the negative electrode or anode is very often made of carbon, graphite or Li 4 Ti0 5 0i 2 (titanate material), possibly also based on silicon or lithium-based, or tin-based and their alloys or of formed composite based on silicon.
- the anode and the cathode of lithium insertion material can be deposited according to a usual technique in the form of an active layer on a metal sheet constituting a current collector.
- the current collector connected to the positive electrode is usually aluminum.
- the current collector connected to the negative electrode is generally made of copper, nickel-plated copper or aluminum.
- a Li-ion battery or accumulator uses a couple of materials at the anode and the cathode to operate at a high voltage level, typically around 3.6 volts.
- a Li-ion battery or accumulator comprises a rigid package or housing when the targeted applications are binding where a long life is sought, with for example much higher pressures to be withstood and a stricter required sealing level, typically less than 10 "6 mbar.l / s of helium, or in environments with strong constraints as the aeronautical or spatial domain.
- the main advantage of rigid packages is their high sealing and maintained over time because the closure of the housings is performed by welding, generally by laser welding.
- FIG. 1 One of the types of cylindrical rigid case, usually manufactured for a high capacity Li-ion accumulator with a lifetime greater than 10 years, is illustrated in FIG.
- the housing 6 of longitudinal axis X comprises a cylindrical lateral envelope 7, a bottom 8 at one end, a cover 9 at the other end.
- the cover 9 supports the poles or output terminals of the current 40, 50.
- One of the output terminals (poles), for example the positive terminal 40 is soldered to the cover 9 while the other output terminal, for example the terminal negative 50, passes through the cover 9 with interposition of a not shown seal which electrically isolates the negative terminal 50 of the cover.
- FIGS. 4 to 4B show the photographs of an electrochemical bundle F of shape elongate along a longitudinal axis XI and comprising a single electrochemical cell C such that it is usually wound by winding before the housing steps in a housing, electrical connection to the output terminals of the accumulator and its impregnation with an electrolyte.
- the cell C consists of an anode 3 and a cathode 4 on either side of a separator (not visible) adapted to be impregnated with the electrolyte.
- a separator not visible
- uncoated strips is meant here and in the context of the invention, the end portions of the metal sheets, also called strips, forming the current collectors, which are not covered with an insertion material lithium.
- the objective of the battery manufacturers is to increase the autonomy of a cell constituting the accumulator or their ability to operate at high power regimes while improving their lifetime, ie their number of possible cycles, their lightness and the manufacturing costs of these components.
- Improvement routes for Li-ion accumulators concern, for the most part, the nature of the materials and the methods of elaboration of the electrochemical cell components.
- the patent FR 2094491 discloses an alkaline accumulator whose electrical connection between the wound electrochemical cell and output terminals is obtained by cutting the banks of the electrodes by regularly spaced slots and then radial folding of the edges thus split from the outside of the inside under. the form of scales superimposed so as to form a substantially plane base on which is finally welded a current collector, constituted if necessary by the housing cover.
- the patent application EP 1102337 discloses a Li-ion accumulator whose electrical connection between the electrochemical cell wound and output terminals is obtained by a single pressing of each end of the electrode strips of the wound cell, along the axis of winding, by means of a pressing mandrel and then, by laser welding of each end of the electrode strips with a terminal current collector consisting of a foil in the form of a disk and a connecting tongue itself. even laser welded subsequently to the housing cover, at one end and at the bottom of the housing, at the other end. Ribs are each made on a diameter of the disc and are themselves pressed beforehand the welding against the ends of pressed electrode strips.
- the patent application EP 1596449 describes a Li-ion accumulator whose electrical connection between the wound electrochemical cell and output terminals is obtained firstly by multiple pressing of each lateral end delimited by the uncoated strips of electrodes of the cell. wound, by means of a pressing mandrel of outside diameter between 15 and 20 mm.
- the pressing mandrel moves in a very short stroke alternately from the outside to the inside of the cell parallel to the winding axis by sweeping the entire side surface of the uncoated electrode strips to entangle between them.
- a terminal current collector constituted by a foil in the form of a plane connection strip itself welded by laser or transparency thereafter to a output terminal integrated in the cover at one lateral end and at the bottom of the housing at the other end.
- the mass and the volume of the sidebands not coated with electrodes (banks) necessary for the electrical connection with the current collectors according to the state of the art are not necessarily optimized, which implies in the end a mass and a volume of the accumulator also not yet optimized.
- the inventors found that de facto the banks of the same lateral end were not necessarily electrically connected to each other, in particular the parts of these banks located in the most peripheral zone of the beam. This implies an increase in the current path to reach certain areas of the beam, thereby increasing the internal resistance of these areas. This therefore creates current distribution heterogeneities, which can be detrimental especially for high power applications for the accumulator.
- the electrolyte filling step in an electrochemical battery of lithium accumulator can be relatively long and delicate because the current collectors of the state of the art as welded on the banks of electrochemical accumulator beam constitute a significant obstacle to the passage of the electrolyte.
- the Applicant has proposed in the patent application FR 3011128 A1 a new method for producing an electrochemical bundle comprising a combination of two folding steps b / and cl of a separate accumulator electrochemical bundle in their implementation. which make it possible to obtain two distinct zones on at least one, preferably each, of the lateral ends of the beam.
- This process is particularly efficient in terms of electrical conductivity and heat dissipation by the beam.
- the object of the invention is to respond at least in part to this need. Presentation of the invention
- the invention relates, in one of its aspects, to a method for producing an electrochemical bundle (F) of a metal-ion accumulator (A), such as a Li-ion accumulator, in view of its electrical connection to the output terminals of the accumulator, comprising the following steps: a / welding a metal foam strip on at least one face of the uncoated strip (s) of the anode and / or the cathode of at least one electrochemical cell (C) constituted the cathode and the anode on either side of a separator adapted to be impregnated with an electrolyte;
- A metal-ion accumulator
- C electrochemical cell
- the method according to the invention is characterized by the addition of a metal foam strip on the banks for welding with a current collector.
- the metal foam strip has a thickness chosen to sufficiently fill the space between two winding turns during the formation of the bundle by winding on itself.
- a metallic material is chosen for the foam strip which is compatible for welding, preferably identical to that of the electrode on which it is welded and which is also compatible with the electrochemical potential of the electrode to avoid a oxidation of the metal foam.
- the metal foam can be copper, aluminum, steel, nickel.
- the metal mat obtained in this way is homogeneous over all the end surface (s) of the electrochemical bundle.
- the assembly consisting of a metal foam strip according to the invention and wound forms an end sufficiently dense to accept a laser weld.
- the heat provided by the weld can diffuse and avoid burning the collectors, while creating a good quality electrical link.
- the fact of using foam is an advantage for the subsequent electrolyte filling phases, since the pores present in the foam do not block the passage of the electrolyte sufficiently to prevent filling.
- the method according to the invention can be implemented for electrodes whose metal strip is relatively thin or relatively thick in the case of application of power or target energy for the accumulator.
- the method according to the invention can be dispensed with axial electrochemical bundling techniques which certainly make it possible to obtain good performances in terms of electrical conductivity and thermal evacuation of the bundle, but which are not necessarily simple to implement.
- the method according to the invention is therefore both simple to implement and guarantees good performance in terms of electrical conductivity and thermal evacuation of the beam.
- the method according to the invention can be advantageously implemented for the production of accumulators or Li-ion batteries.
- the steps a / and b / are carried out continuously, step a / being carried out beforehand from step b /.
- Achieving the laying and welding of the metal foam strip continuously before winding the beam is advantageous because it does not induce any additional time in the realization of the beam compared to the known technique. In other words, this time is a masked production time. In other words, this makes it possible not to have to manage additional process steps, such as setting up another machine. Indeed, it suffices to modify the existing equipment for unwinding an electrode metal strip coil and depositing an active insertion material layer, in particular, by coating, and winding the electrodes, by adding thereto upstream a simultaneous and continuous metal foil laying and welding station with the unwinding of the metal electrode strip.
- the step a / welding can be performed by ultrasonic welding, laser or electrical. Whatever the chosen technique, it must ensure a cohesion between the (the) strip (s) of foam and that (s) of metal strip during the winding of the beam and during welding to the current collectors.
- Step a / welding can also be performed by laser beam, continuously during the unwinding of electrode strip.
- the laser can then be moved relative to the electrode strip.
- the laser beam can be a continuous line during the entire course of the electrode strip, controlled to synchronize with the speed of the scrolling of the electrode strip and / or that of the foam strip, or a succession of laser pulses, which can also be controlled by the speed of unwinding of the electrode strip and / or the metal foam strip .
- the step a / welding can be carried out point by point or in a continuous path, that is to say in one or more continuous lines or in one or more continuous patterns.
- the number of points and their relative spacing are adjusted according to each desired accumulator design.
- the a / welding step can be advantageously performed by ultrasound continuously, according to very common processes in the manufacture of waterproof clothing. According to these methods, a wheel comes both to press the two elements to be welded and also creates the ultrasonic welding continuously. With respect to a laser welding solution as detailed above, the foam must not be overwritten so that it returns to shape at the output of the process.
- the foam tape (s) is (are) produced in a compatible material, more preferably in the same metallic material as that of the non-coated tape (s). to which it is (are) welded.
- a metal foam strip may be welded to each of the two faces of the uncoated strip (s) of the anode and / or the cathode.
- the method may comprise a step C1 consisting of X-axis axial compression of the electrochemical bundles on at least one surface comprising the metal foam web (s) at the end of the uncoated webs so as to obtain on the compressed surface portion the substantially planar base intended to be welded to a current collector.
- the invention further relates to a method of producing an electrical connection portion between an electrochemical bundle of a metal-ion accumulator and one of the output terminals of the accumulator, comprising the following steps:
- the step of welding a base to a current collector is performed by laser welding.
- the invention finally relates to a battery or metal storage battery comprising a housing comprising:
- a housing or a Li-ion accumulator Preferably, for a housing or a Li-ion accumulator:
- the negative electrode material (s) is selected from the group comprising graphite, lithium, titanate oxide Li 4 Ti050i2; or based on silicon or lithium-based, or tin-based and their alloys;
- FIG. 1 is a schematic exploded perspective view showing the various elements of a lithium-ion accumulator
- FIG. 2 is a front view showing a lithium-ion battery with its flexible packaging according to the state of the art
- - Figure 3 is a perspective view of a lithium-ion battery according to the state of the art with its rigid packaging consisting of a housing;
- - Figure 4 is a perspective view of an electrochemical bundle of a lithium-ion battery according to the state of the art, the beam consisting of a single electrochemical cell wound on itself by winding;
- FIG. 4A is a photographic view from above of a lateral end of the electrochemical bundle according to FIG. 4;
- FIG. 4B is a photographic view from above of the other lateral end of the electrochemical bundle according to FIG. 4;
- FIGS. 5 to 5C are diagrammatic views showing the successive steps of an example according to the invention of a process for producing an electrochemical bundle and a part of its electrical connection to the output terminals of the accumulator which 'integrated;
- FIG. 5 ⁇ being a variant of FIG. 5A;
- FIG. 6 is a diagrammatic view of an advantageous variant of a step of the method of simultaneously and continuously unwinding an electrode metal strip with a strip of metal foam, to bring them together and then to weld them mutually.
- the inventors propose a new method for producing the electrochemical bundle.
- the metal strips supporting the electrode materials may have a thickness of between 5 and 50 ⁇ .
- anode foil 3 it may advantageously be a copper foil thickness of the order of 12 ⁇ .
- a cathode strip 2 it may advantageously be an aluminum strip thickness of the order of 20 ⁇ .
- the metal foam 30 may advantageously be made of copper or any other compatible material such as nickel, steel, etc.
- the beam thus has a cylindrical shape elongate along a longitudinal axis X, with at one of its lateral ends, strips 30 of the anode 3 uncoated and at the other 11 of its lateral ends strips 20 of the uncoated cathode.
- the initial beam according to the invention is therefore like that shown in Figures 4 to 4B, with the end of the edges 20, 30 strips of metal foam 23, 33 ( Figure 5B).
- the thickness of the foam strip 23, 33 is initially chosen to sufficiently fill the space between two winding turns during the winding of the bundle F.
- Step c1 the laser welding L is then performed at one of the lateral ends 11 of the bundle, of the base 23 formed by the foam strip 23 of the cathode (positive banks) with a conventional current collector 24 in the form of a solid disc ( Figure 5C), itself intended to be welded thereafter with the bottom 8 of the battery housing 6.
- the metal foam strips 23, 33 form ends sufficiently dense to accept a laser weld.
- the heat provided by the weld can diffuse and avoid burning the collectors, while creating a good quality electrical link.
- FIG. 6 shows an advantageous variant of the production method according to the invention, according to which step a / is carried out beforehand and continuously with step b / winding.
- a metal strip 30 of an electrode here the anode 3 is unwound simultaneously and continuously in parallel with the unwinding of a metal foam strip 33, by means of drive rollers R1, R2.
- the two strips 30, 33 are contiguous to one another at the passage of the first drive rollers RI and they are unwound together against a roll R3 which forms a weld bead.
- a weld heel R3 is arranged a laser beam L which can achieve either a continuous line throughout the unwinding of the strips 30, 33 or by a succession of pulses yet a burst of laser pulses.
- the laser beam can be advantageously controlled by the unwinding speed of the electrode strip 30.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1555698A FR3037725B1 (en) | 2015-06-22 | 2015-06-22 | PROCESS FOR MAKING AN ELECTROCHEMICAL LITHIUM ACCUMULATOR BEAM WITH METALLIC FOAM AT THE END OF STRIPS |
PCT/EP2016/064293 WO2016207151A1 (en) | 2015-06-22 | 2016-06-21 | Method for producing an electrochemical bundle for a metal-ion battery comprising metal foam at the ends of strips |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3311433A1 true EP3311433A1 (en) | 2018-04-25 |
Family
ID=53776864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16732573.7A Withdrawn EP3311433A1 (en) | 2015-06-22 | 2016-06-21 | Method for producing an electrochemical bundle for a metal-ion battery comprising metal foam at the ends of strips |
Country Status (4)
Country | Link |
---|---|
US (1) | US20180175359A1 (en) |
EP (1) | EP3311433A1 (en) |
FR (1) | FR3037725B1 (en) |
WO (1) | WO2016207151A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3037724B1 (en) * | 2015-06-22 | 2017-07-21 | Commissariat Energie Atomique | PROCESS FOR PRODUCING AN ELECTROCHEMICAL LITHIUM BATTERY BEAM WITH FOLDING OR WINDING OF THE SHEET END ON THE SAME |
FR3131101B1 (en) * | 2021-12-22 | 2024-01-19 | Accumulateurs Fixes | Electrochemical beam, battery cell and associated manufacturing processes |
SE2251440A1 (en) * | 2022-12-09 | 2024-06-10 | Northvolt Ab | A method of manufacturing a secondary cell electrode |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2094491A5 (en) | 1970-06-23 | 1972-02-04 | Accumulateurs Fixes | |
US4668592A (en) * | 1985-06-10 | 1987-05-26 | Gte Government Systems Corporation | Electrochemical cell having porous metal coupling members |
JP4866496B2 (en) | 1999-04-08 | 2012-02-01 | パナソニック株式会社 | Manufacturing method of secondary battery |
EP1134819B1 (en) * | 2000-03-14 | 2007-04-25 | Sanyo Electric Co., Ltd. | Nonaqueous electrolyte secondary cells |
US6893773B2 (en) | 2000-10-13 | 2005-05-17 | Matsushita Electric Industrial Co., Ltd. | Flat square battery |
US7338733B2 (en) | 2002-04-30 | 2008-03-04 | Sanyo Electric Co., Ltd. | Battery pack |
US7335448B2 (en) | 2002-05-30 | 2008-02-26 | Matsushita Electric Industrial Co., Ltd. | Lithium ion secondary battery |
JP4342160B2 (en) * | 2002-09-10 | 2009-10-14 | パナソニック株式会社 | Storage battery and manufacturing method thereof |
JP4338410B2 (en) * | 2003-01-31 | 2009-10-07 | 三洋電機株式会社 | Battery with spiral electrode group |
FR2853764B1 (en) | 2003-04-11 | 2009-06-05 | Cit Alcatel | ELECTRICAL CONNECTION OF A CONNECTION TO AN ELECTROCHEMICAL BEAM |
JP4324794B2 (en) | 2004-11-09 | 2009-09-02 | ソニー株式会社 | Negative electrode active material and secondary battery |
CN2770106Y (en) * | 2005-01-11 | 2006-04-05 | 深圳市格瑞普电池有限公司 | Novel nickek-hydrogen power battery |
JP4251204B2 (en) | 2006-08-31 | 2009-04-08 | 日産自動車株式会社 | Battery module |
JP5114036B2 (en) | 2006-09-08 | 2013-01-09 | Necエナジーデバイス株式会社 | Manufacturing method of stacked battery |
KR101610680B1 (en) | 2013-09-02 | 2016-04-20 | 주식회사 엘지화학 | Welding method for electrode tap of secondary battery and the electrode assembly manufactured by the same |
FR3011128B1 (en) | 2013-09-25 | 2015-10-30 | Commissariat Energie Atomique | METHOD FOR PRODUCING AN ELECTROCHEMICAL BEAM OF A LITHIUM ACCUMULATOR |
FR3037724B1 (en) * | 2015-06-22 | 2017-07-21 | Commissariat Energie Atomique | PROCESS FOR PRODUCING AN ELECTROCHEMICAL LITHIUM BATTERY BEAM WITH FOLDING OR WINDING OF THE SHEET END ON THE SAME |
-
2015
- 2015-06-22 FR FR1555698A patent/FR3037725B1/en active Active
-
2016
- 2016-06-21 WO PCT/EP2016/064293 patent/WO2016207151A1/en active Application Filing
- 2016-06-21 EP EP16732573.7A patent/EP3311433A1/en not_active Withdrawn
- 2016-06-21 US US15/738,872 patent/US20180175359A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20180175359A1 (en) | 2018-06-21 |
WO2016207151A1 (en) | 2016-12-29 |
FR3037725B1 (en) | 2021-12-31 |
FR3037725A1 (en) | 2016-12-23 |
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