EP2647078A1 - Procédé de fabrication d'un empilement d'électrodes/de séparateurs avec remplissage d'un électrolyte pour l'utilisation dans un élément d'accumulateur d'énergie électrochimique - Google Patents

Procédé de fabrication d'un empilement d'électrodes/de séparateurs avec remplissage d'un électrolyte pour l'utilisation dans un élément d'accumulateur d'énergie électrochimique

Info

Publication number
EP2647078A1
EP2647078A1 EP11788776.0A EP11788776A EP2647078A1 EP 2647078 A1 EP2647078 A1 EP 2647078A1 EP 11788776 A EP11788776 A EP 11788776A EP 2647078 A1 EP2647078 A1 EP 2647078A1
Authority
EP
European Patent Office
Prior art keywords
stack
sheets
energy storage
storage cell
electrolyte
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Withdrawn
Application number
EP11788776.0A
Other languages
German (de)
English (en)
Inventor
Tim Schaefer
Dieter Olpp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Li Tec Battery GmbH
Original Assignee
Li Tec Battery GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Li Tec Battery GmbH filed Critical Li Tec Battery GmbH
Publication of EP2647078A1 publication Critical patent/EP2647078A1/fr
Withdrawn legal-status Critical Current

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
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like 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
    • H01M10/04—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
    • H01M10/058—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
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/463—Separators, membranes or diaphragms characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making

Definitions

  • the present invention relates to a method for producing an electrochemical energy storage cell, which comprises a stack of sheets, in particular electrode and / or separator sheets, and a liquid electrolyte.
  • Electrochemical energy storage cells are understood to mean the smallest units of devices for the chemical storage of electrical energy, in particular non-rechargeable energy storage cells, also called primary cells, such as alkaline battery cells, and rechargeable energy storage cells, also called secondary cells or accumulator cells, such as nickel metal hydride or lithium ion battery cells.
  • Such an energy storage cell generally has an electrode arrangement, which consists of a plurality of alternately superimposed, flat electrodes or electrode layers, wherein in each case a positive electrode (cathode) and a negative electrode (anode) is arranged alternately. Between every two adjacent electrodes - - _
  • a separator or a separator layer is arranged, which (r) serves to avoid an electrical contact between two electrodes of different polarity and thus a short circuit.
  • the electrode assembly is filled with a, preferably liquid, electrolyte to produce the electrical conductivity within the energy storage cell.
  • electrolyte a, preferably liquid, electrolyte to produce the electrical conductivity within the energy storage cell.
  • smooth or porous - these surfaces should be wetted or soaked by the electrolyte, for example, only.
  • the distribution of the electrolyte on the surfaces of the electrodes or separators should be as comprehensive as possible in order to ensure a good conductivity and thus a large capacity of the electrochemical energy storage cell.
  • the electrodes may be graphite-coated aluminum or copper foil and the separator may be a ceramic material applied to a plastic substrate.
  • the separator may for example consist of an organic material containing lithium ions.
  • Such an electrode arrangement is produced, for example, by winding superimposed electrode and separator strips or by alternately superimposing individual electrode and separator sheets.
  • all the anode sheets or all the cathode sheets are each connected to one another in an electrically conductive manner by means of metallic conductors for current discharge.
  • a sheet is understood to mean a flat article, preferably a thin planar one Object, ie a flat object whose dimensions in a direction perpendicular to its surface are substantially less than that
  • the individual sheets preferably have a rectangular shape and are preferably the same size. Therefore, the present invention will be described in terms of rectangular sheets of the same size. It should be noted, however, that the leaves can have any other shape and size.
  • the present invention is therefore based on the object to develop a method by which the electrolyte in a simple, fast and reliable manner can be brought into contact with the surfaces of the electrode and separator sheets.
  • This object is achieved by a method for producing an electrochemical energy storage cell according to claim 1, wherein advantageous developments and embodiments of the method are contained in the subclaims.
  • the method according to the invention is based on the idea that the liquid electrolyte can more easily penetrate between the leaves of the stack and come into contact with their surfaces if there is a small gap between adjacent leaves in the stack.
  • the stack can be erected upright so that a fanned side faces up, and the electrolyte can be easily filled from above into the spaces between the individual sheets. The electrolyte will then distribute evenly on all surfaces of all the sheets in the stack, as it immediately and. can reach unhindered.
  • the method according to the invention therefore has the following steps, wherein these can also be carried out several times and / or in another order than indicated: - -
  • Interspaces are created between a plurality of sheets adjacent to the stack.
  • the stack is brought into contact with the electrolyte.
  • the width of a gap is preferably at least the thickness of a sheet, more preferably at least twice the thickness of a sheet.
  • a certain "exposure time” can be provided between the contacting of the stack with the electrolyte and the removal of the spaces between the sheets, wherein the length of the necessary exposure time will be significantly shorter than if there were no spaces between the sheets.
  • the step of creating spaces between a plurality of sheets adjacent to the stack comprises at least the following substeps in the order indicated:
  • a plurality of sheets in the stack are fixed at at least one point relative to each other.
  • fixing is here meant that a relative mobility of the leaves against each other is prevented at this point, preferably by a clamping and / or by a stop. This step is optional at this point in the procedure (see below).
  • the stack is bent, the leaves in the stack are at least partially movable against each other.
  • the bending is done by applying suitable forces from the outside.
  • the shape of the bent stack can be characterized by the material properties of the leaves themselves, in particular their flexural rigidity, by the externally applied - -
  • the angle at which the stack is bent is preferably chosen to be as large as possible. It is preferably at least 90 degrees, more preferably at least 180 degrees.
  • the leaves on the inner - the imaginary center of the bend facing edge of the stack are bent more than the leaves on the outer - the imaginary center of the bend facing away - edge of the stack ,
  • the side edges of the individual leaves, which are perpendicular to the plane in which the bend takes place, and are therefore not bent themselves, are thereby slightly shifted from one another. This displacement occurs on one side of the sheets where the sheets are not fixed against each other or, if the above fixing step has not been carried out, possibly on two opposite sides of the sheets.
  • the plurality of sheets in the bent stack are fixed relative to each other. If, in the first step, the leaves have already been fixed at a point relative to one another, only one fixation at at least one further point is required in this step, otherwise at least two further points. In all cases, the leaves are now fixed relative to each other at at least two points.
  • the bent stack is returned while maintaining the fixations in a form that corresponds approximately to its original shape.
  • the return of the stack is preferably carried out by removing the outer, bending-causing forces, the stack through the - -
  • the blades can not fully return to their original, mutually parallel position. Rather, between each two adjacent leaves to compensate for the mutual displacement a slightly different curvature of these two leaves and thus a small gap between them, which tapers to the fixation points and - taking a symmetrical shape of the gap - in the middle of his has the largest width. Due to the fixation, the stack is still mechanically stable.
  • the electrolyte can be brought into contact with the stack. This is done in a particularly preferred embodiment of the invention by the filling of the electrolyte.
  • the stack is aligned so that one side of the stack, where the gaps have formed, facing upward.
  • the electrolyte is then filled by a directed from above the stack of liquid jet, for example, instilled or injected.
  • the stack from the top of the arresters (if any already exist in this manufacturing step), which should not come into contact with the electrolyte anyway, are recorded. It is also possible to spin the stack during contacting and / or after bringing the stack into contact with the electrolyte in step S2, wherein spinning means rapid rotation about an axis of rotation.
  • the spin is preferably done by one or (successively) around several geometric axes of symmetry of the stack to avoid unbalance of the stack during spin. If the spin occurs during the contacting of the stack with the electrolyte, the electrolyte is preferably introduced into the stack from above along the axis of rotation of the spin process. The spinning ensures that the electrolyte is even better distributed in the stack by the resulting centrifugal force.
  • the last step of the method according to the invention the removal of the gaps between the plurality of sheets adjacent in the stack, is effected in a particularly preferred embodiment by releasing the fixations made.
  • the leaves have a sufficiently high flexural rigidity, they automatically regain their original shape as flat surfaces.
  • the stack automatically returns to its original shape of closely superimposed leaves, and now the electrolyte is evenly distributed on the surfaces of the leaves.
  • the original shape of the stack after loosening the fixations can be achieved by light pressure from the outside on the two outermost sheets of the stack again. Furthermore, after the removal of the spaces from the outside, a force can be exerted on the stack so that the electrolyte inside the stack is even better distributed.
  • This force is preferably a pressing, brushing or rolling movement. It is preferably exerted, depending on the nature of the movement, by one or more plates which compress the stack from one or both sides from the outside, by one or more squeegees which are pressed on one or both sides from outside via the squeegee Delete the surface of the stack, or one or more Rollers that roll over the surface of the stack with pressure on one or both sides from the outside.
  • the Steichen or rolling can also be done in several directions to distribute the electrolyte in the stack well in all directions.
  • At least two series of steps of fixing a plurality of sheets, bending the stack, and returning the bent stack are performed sequentially.
  • the stack is bent in the two steps in each case in opposite directions.
  • At least two series of steps of fixing a plurality of sheets, bending the stack, and returning the bent stack are performed sequentially.
  • the fixing of the plurality of sheets is at least partially at different points of the stack, preferably in sections from top to bottom or from bottom to top along two opposite edges of the stack, the stack is erected upright.
  • the stack can be almost the same - -
  • the plurality of sheets in the bent stack are fixed relative to each other in the region of two opposite edges of the stack, preferably on the two longitudinal sides or on the two narrow sides of the stack. In this way, the stack after or before the fixation can easily bend in a direction which is perpendicular to the direction of the fixation. Thus, all steps of the process are carried out in a direction parallel to a side edge of the stack, which is particularly easy to implement mechanically.
  • the plurality of sheets in the bent stack are fixed relative to one another in the region of an edge of the stack and in the region of at least one corner of the stack not lying on this edge.
  • Fixing the stack to a corner may be advantageous when there are no two opposite sides of the stack for fixing, for example because the electrolyte is to be filled in one of these sides and the other pair from opposite sides of the stack due to space constraints during the process Manufacturing is not accessible for fixing.
  • clamping means applying an external pressure to the stack from both sides at the desired locations, the pressure being so large that the sheets at these locations are substantially incapable of moving relative to each other but also not being deformed or damaged.
  • suitable clamping elements are about clamping rails or point-shaped terminals, which are pressed for example by spring pressure.
  • the fixing may alternatively also be effected by applying the plurality of sheets in the bent stack to a stop element, for example a stop profile.
  • a stop element for example a stop profile.
  • the stop element is designed so that the sheets are prevented in returning the stack to fully return to its original position, since they abut with at least one side edge of the stop element.
  • the stop element preferably has the shape of a V-shaped profile.
  • the stack is wholly or partially contained in an enclosure during all or almost all steps of the process. This serves to ensure that the electrolyte does not run out of the stack again after it has been brought into contact with the stack and thus makes temporary sealing measures superfluous.
  • the procedure is considerably simplified in this way.
  • this embodiment assumes that the envelope is sufficiently flexible to allow the individual process steps, in particular the bending of the stack and the fixing of the sheets.
  • the sheath is the outer sheath of the electrochemical energy storage cell.
  • Pouch- or Coffeebag cells are known and widely used.
  • the method can be further simplified because the stack is introduced before the execution of the method in its final outer shell and remains during and after the execution of the method in this outer shell ,
  • the sheath may also be an additional, flexible sheath, for example in the form of a thin, elastic foil bag, which later forms an additional layer around the stack in the finished energy storage cell within the (possibly inflexible) outer sheath.
  • FIG. 1 shows the method steps in a first embodiment, wherein the stack is fixed after bending on two opposite sides.
  • FIG. 2 shows the method steps in a second exemplary embodiment, wherein the stack is fixed on a first side before bending and on a side opposite the first side after bending;
  • FIG 3 shows the method steps in a third exemplary embodiment, wherein the stack is fixed on one side and on two corners.
  • Fig. 4 a modification of the first embodiment, wherein two opposite side edges of the stack are fixed by two stop profiles. - -
  • a consisting of six electrode or separator sheets 2 stack 1 is shown schematically in cross section, the gaps between the individual sheets 2 are only the better recognizability of the sheets 2, while the sheets 2 are in fact close together.
  • the stack 1 is loosely clamped at two points near two opposite side edges by two edge clamps 3, so that the leaves at both clamping points can still move relative to each other.
  • the edge clamps 3 are indicated in the drawing by two black squares (clamping rails), which are connected by a dashed line. The clamping should in each case take place over the entire side edge of the stack 1.
  • step S1.1 The optional step of fixing sheets 2 before bending the stack 1 is not performed in this embodiment.
  • the stack 1 is bent in a bending direction 5 approximately along a circular path (step S1.2).
  • the leaves 2 move between the edge clamps 3 relative to each other.
  • Fig. 1e is now the electrolyte 4 (shown hatched in the drawing) in direction 10 from above into the spaces between the sheets 2 in the stack 1 filled (step S2). Due to the gaps, he can there, possibly apart from the areas of the fixed edge clamps 3, easily distribute.
  • Fig. 1f the fixation of the stack by the edge clamps 3, optionally after a short exposure time, solved again.
  • the stack finally resumes its original shape from planar, parallel sheets 2, and the interstices formed are removed (step S3).
  • the electrolyte 4 can also be distributed between the leaves 2 in the area of the edge clamps 3.
  • the bending of the stack 1, the fixing and loosening of the edge clamps 3 and the return of the stack 1 are effected by a suitable mechanism (not shown) and can be fully automated in the production process.
  • the method shown in Fig. 2 differs from that shown in Fig. 1 in that the stack 1 is already fixed before bending by an edge clamp 3 on the left edge of the stack 2 (step S1 .1), while the stack 1 am right edge is only loosely clamped by the edge clamp 3 before bending (see Fig. 2b).
  • the stack 1 is bent in the bending direction 5, wherein the fixation by means of the edge clamp 3 is maintained (step S1.2).
  • the fixed edge clamp 3 remains stationary during bending;
  • this side of the stack - as in Fig. 1 c) - are moved when bending the stack 1.
  • the sheets 2 can continue to move relative to one another during the bending.
  • step S1.3 in the bent state of the stack 1, the edge clamp 3 is also fixed on the right-hand edge of the stack 1 (step S1.3). Then, the stack 1 on the right side along the direction 7 is almost returned to its original position (step S1.4).
  • FIGS. 2e) and 2f the filling of the electrolyte 4 (step S2) and the relaxation of the stack 1 filled with electrolyte 4 into its starting position and thus the removal of the intermediate spaces are shown analogously to FIGS. 1e) and 1f) (step S3).
  • Fig. 3a) shows a perspective view of a stack 1, which is already fixed to the lower longitudinal side by a clamping rail 8 (corresponds to step S1.1). At this longitudinal side of the stack 1 are namely the Ableiterfahen the electrode sheets 2 (not shown), which are already connected to a package and can not be solved in this manufacturing step.
  • the stack 1 is initially loosely clamped by the point clamps 9 in the region of the two corners opposite the clamping rail 8 in a substantially point-like manner.
  • the stack 1 is then bent diagonally forward at these two corners along two bending directions 5 and 6 (step S1.2). - -
  • step S1.3 The point clamps 9 are then fixed in step 3d) (step S1.3), which in turn is represented by two inwardly directed arrows, and the stack in one direction 7 is returned to its starting position as far as possible (step S1. 4).
  • step S1. 4 This results in a fanning of the sheets 2 both on the upper longitudinal side and on the two narrow sides, wherein the width of a gap between two sheets 2 in the stack 1 from top to bottom decreases (in the direction of the clamping rail 8).
  • the electrolyte 5 is filled in a filling direction 10 from above into the stack 1 (step S2) and can spread down before the stack 1 in Fig. 3f) by the release the fixed point terminals 9 finally assumes its original shape and the spaces are removed (step S3).
  • Fig. 4 shows a modification of the method shown in Fig. 1, wherein the sub-figures 4a), 4b) and 4c) correspond to the steps of the sub-figures 1 b), 1 c) and 1 d).
  • the sheets 2 are not clamped in the stack 1, but applied to two opposite sides of two stop profiles 1 1, which each form an acute angle in cross section (see Fig. 4a).
  • the stack 1 is bent in a bending direction 5, wherein the lateral edges of the sheets 2 move against each other and each slide into the interior of the stop profiles 1 1 (step S1.2).
  • the stack 1 is returned in the direction 7 (step S1 .4), wherein the lateral edges of the sheets 2 are held by the stop profiles 1 1 in their mutually shifted position (step S1.3) and again by this shift give the desired spaces between the individual sheets 2.
  • step S1.3 the stop profiles 1 1 in their mutually shifted position
  • the inner sides of the stop profiles 1 1 may also be provided with a rough, non-slip or scaly surface.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Filling, Topping-Up Batteries (AREA)

Abstract

Procédé de fabrication d'un élément d'accumulateur d'énergie électrochimique présentant un empilement (1) de feuilles (2), notamment de feuilles d'électrodes et/ou de séparateurs (2), et un électrolyte liquide (4), le procédé comportant les étapes suivantes: créer des espaces intermédiaires entre une pluralité de feuilles (2) voisines dans un empilement (1) (étape S1), mettre en contact l'empilement (1) avec l'électrolyte (4) (étape S2), enlever les espaces intermédiaires créés à l'étape S1 entre la pluralité des feuilles (2) voisines dans l'empilement (1) (étape S3). Ainsi, l'électrolyte (4) peut se répartir rapidement et de manière homogène sur les surfaces de la pluralité des feuilles (2). Dans un mode de réalisation préféré du procédé, l'étape S1 comporte les sous-étapes suivantes: fixer une pluralité de feuilles (2) dans l'empilement (1) relativement les unes aux autres en au moins un point (étape S1.1 optionnelle), cintrer l'empilement (1), les feuilles (2) dans l'empilement (1) étant mobiles au moins partiellement les unes contre les autres (étape S1.2), fixer une pluralité de feuilles (2) dans l'empilement (1) cintré relativement les unes aux autres de sorte que la pluralité des feuilles (2) soit fixées les unes par rapport aux autres en au moins deux points (étape S1.3), remettre l'empilement (1) cintré, en maintenant la fixation de l'étape S1.1 et/ou S1.3, en une forme qui correspond approximativement à la forme de départ de l'empilement (1) (étape S1.4).
EP11788776.0A 2010-11-29 2011-11-23 Procédé de fabrication d'un empilement d'électrodes/de séparateurs avec remplissage d'un électrolyte pour l'utilisation dans un élément d'accumulateur d'énergie électrochimique Withdrawn EP2647078A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010052843A DE102010052843A1 (de) 2010-11-29 2010-11-29 Verfahren zur Herstellung einer elektrochemischen Energiespeicherzelle
PCT/EP2011/005938 WO2012072220A1 (fr) 2010-11-29 2011-11-23 Procédé de fabrication d'un empilement d'électrodes/de séparateurs avec remplissage d'un électrolyte pour l'utilisation dans un élément d'accumulateur d'énergie électrochimique

Publications (1)

Publication Number Publication Date
EP2647078A1 true EP2647078A1 (fr) 2013-10-09

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EP11788776.0A Withdrawn EP2647078A1 (fr) 2010-11-29 2011-11-23 Procédé de fabrication d'un empilement d'électrodes/de séparateurs avec remplissage d'un électrolyte pour l'utilisation dans un élément d'accumulateur d'énergie électrochimique

Country Status (7)

Country Link
US (1) US20130323584A1 (fr)
EP (1) EP2647078A1 (fr)
JP (1) JP2014502016A (fr)
KR (1) KR20130122647A (fr)
CN (1) CN103370824A (fr)
DE (1) DE102010052843A1 (fr)
WO (1) WO2012072220A1 (fr)

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US20130323584A1 (en) 2013-12-05
JP2014502016A (ja) 2014-01-23
CN103370824A (zh) 2013-10-23
WO2012072220A1 (fr) 2012-06-07
DE102010052843A1 (de) 2012-05-31
KR20130122647A (ko) 2013-11-07

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