EP2764561A1 - Procédé et système pour découper des objets en forme de feuille ou de plaque - Google Patents

Procédé et système pour découper des objets en forme de feuille ou de plaque

Info

Publication number
EP2764561A1
EP2764561A1 EP12734812.6A EP12734812A EP2764561A1 EP 2764561 A1 EP2764561 A1 EP 2764561A1 EP 12734812 A EP12734812 A EP 12734812A EP 2764561 A1 EP2764561 A1 EP 2764561A1
Authority
EP
European Patent Office
Prior art keywords
cutting
laser
objects
cut edges
structuring
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Withdrawn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
EP12734812.6A
Other languages
German (de)
English (en)
Inventor
Steffen Legner
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 EP2764561A1 publication Critical patent/EP2764561A1/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Withdrawn legal-status Critical Current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
    • H01M10/0436—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
    • 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
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H01M50/406—Moulding; Embossing; Cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
    • B23K26/0624—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses using ultrashort pulses, i.e. pulses of 1ns or less
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • 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
    • H01M4/139—Processes of manufacture
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H01M4/806—Nonwoven fibrous fabric containing only fibres
    • 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
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417—Polyolefins
    • 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
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/44—Fibrous material
    • 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 a method and a system for cutting thermoplastic plastic fibers as carrier material having sheet- or plate-shaped objects, in particular for cutting electrodes and / or separators for the construction of an electrochemical energy storage or parts of such electrodes or separators.
  • electrochemical energy storage batteries primary storage
  • accumulators secondary storage
  • Primary storage is typically charged only once and disposed of after discharge, while secondary storage allows multiple (from a few 100 to over 10,000) cycles of charge and discharge. It should be noted in this context that, especially in the motor vehicle sector, rechargeable batteries are also referred to as batteries.
  • the electrodes and separators are needed in a very large number, which is why there is a need for high quality, effective and cost effective Manufacturing process exists.
  • the electrodes and separators it should be noted that these components must be cut to the appropriate dimensions for the assembly of the electrode stacks or cells.
  • the electrodes and the separators are cut from electrode strips or separator strips.
  • thermoplastic resin fibers as sheet or plate shaped substrates having support material.
  • This object is achieved by a method according to claim 1, a cutting system according to claim 16 and a battery according to claim 22.
  • Advantageous embodiments and further developments are the subject of the dependent claims.
  • this object is achieved in a method for cutting thermoplastics fibers as carrier material having sheet- or plate-shaped objects, in particular of electrodes and / or separators for constructing an electrochemical energy store or parts of such electrodes or separators, that the cutting process comprising the steps of: bringing the objects to be cut to a laser cutting device and cutting the objects with the laser cutting device such that fusion of at least part of the thermoplastic resin fibers is performed at the cutting edges.
  • the at least partial fusion at the cut edges enables a simplified handling of the electrodes and separators, since the risk of micro-cracks during mechanical stress during assembly can be reduced.
  • Another advantage lies in the fact that the increased strength at the cutting edges, the life of the electrodes and the separators is increased and that batteries can be run through with such produced electrodes and separators an increased number of cycles.
  • Opposite Conventional mechanical cutting methods are advantages of the cutting method according to the invention in that a constant quality of the cut edges can be achieved and that no mechanical stress acts on the cut edges and that fewer particles are generated in this cutting process, so that during the preparation of the cleaning of the electrodes and the separators is simplified. Further advantages of the cutting method according to the invention are that the method can be carried out wear-free and that the production of different geometries of the electrodes and the separators is simplified. Another advantage over mechanical cutting methods lies in the fact that the cut edges have a smooth cutting profile.
  • an "electrochemical energy store” is to be understood as meaning any type of energy store from which electrical energy can be taken, wherein an electrochemical reaction takes place in the interior of the energy store comprises at least one electrochemical cell, preferably a plurality of electrochemical cells
  • the plurality of electrochemical cells may be connected in parallel to store a larger amount of charge or may be connected in series to achieve a desired operating voltage or form a combination of parallel and series connection.
  • an “electrochemical cell” is to be understood as meaning a device which serves to deliver electrical energy, the energy being stored in a chemical form, In the case of rechargeable secondary batteries, the cell is also designed to receive electrical energy.
  • the shape (ie, in particular, the size and geometry) of an electrochemical cell can be chosen depending on the available space, Preferably, the electrochemical cell is substantially prismatic or cylindrical
  • the present invention is particularly applicable to electrochemical cells used advantageously as pouch cells or Coffeebag cells without the electrochemical cell of the present invention should be limited to this application.
  • Such an electrochemical cell usually has an electrode stack, which is at least partially enclosed by an envelope.
  • an "electrode stack” is to be understood as meaning an arrangement of at least two electrodes and an electrolyte arranged therebetween
  • the electrolyte may be partially received by a separator, the separator then separating the electrodes
  • the electrodes are for example plate-shaped or foil-like and are preferably arranged substantially parallel to each other (prismatic energy storage cells) .
  • the electrode stack may also be wound and one
  • the term "electrode stack” should also include such electrode windings.
  • the electrode stack may also comprise lithium or another alkali metal in ionic form.
  • thermoplastic resin fibers preferably comprise a thermoplastic polyester, in particular polythylene terephthalate, in the process.
  • the step of cutting the objects from the laser cutting apparatus is performed at least partially with a pulsed laser having at least one of the following characteristics: a maximum wavelength in a wavelength range of 400 nm to 1300 nm, preferably maximum wavelength in a wavelength range and particularly preferably a maximum wavelength of 1070 nm, a pulse duration in a pulse duration range of 5 ps to 200 ns, preferably a pulse duration of 30 ns, a frequency in a frequency range of 40 kHz to 5000 kHz, preferably from 250 kHz to 1000 kHz and a frequency of 500 kHz, an overlap of more than 50%, preferably an overlap of more than 90%, a beam quality ⁇ 2 M 2 ; a power in a power range of 1 kW to 20 kW, preferably a power of 5 kW, a laser spot size smaller than 1000 ⁇ , preferably a laser spot size smaller than 300 pm.
  • a pulsed laser having at least one of the following characteristics: a maximum wavelength in a wavelength range of
  • the cut edges of the objects are above a slit of a slotted overlay. Advantages of this embodiment are that heat accumulation in the region of the support can be avoided and that resulting cutting gases can be sucked off both above and below the objects to be cut.
  • the method comprises performing machining operations on the cut edges, in particular performing machining operations on the cut edges to reduce micro-shorts.
  • This embodiment has the advantage that the cutting operations can be carried out quickly and the cutting edges have a quality required for further use, since the machining operations at the cutting edges can be used to avoid or reduce the shortcomings of the microstructure
  • the step of performing machining operations on the cut edges to reduce microcracking Conclude structuring the cut edges.
  • An advantage of this embodiment is that microshorting can be avoided particularly quickly and effectively by such structuring
  • the step of patterning the cut edges is performed with a laser structuring device.
  • the step of structuring the cut edges with the laser structuring device is preferably performed after the step of cutting the object with the laser cutting device.
  • the step of patterning the cut edges with the laser structuring device is performed prior to the step of cutting the object with the laser cutting device.
  • the laser cutting apparatus is used.
  • the step of structuring the cut edges with the laser structuring apparatus and the step of cutting the objects with a laser cutter are performed substantially simultaneously.
  • the step of performing machining operations on the cut edges to reduce micro-shorts comprises applying support materials to the cut edges.
  • the step of applying under-backing materials to the cut edges and the step of cutting the objects with the laser cutter are performed substantially simultaneously.
  • An advantage of this embodiment is that the cutting can be assisted with a laser beam
  • the support materials have components with increased absorption coefficients with respect to the wavelengths used by the laser cutting device.
  • this object is achieved in a system for cutting thermoplastic plastic fibers as carrier material having sheet or plate-shaped objects, in particular for cutting electrodes and / or separators for the construction of an electrochemical energy store or parts of such electrodes or separators, thereby solved the cutting system a transport device configured to bring the objects to be cut to a laser cutting device; and a laser cutting device configured to cut the objects such that fusion of at least a portion of the thermoplastic resin fibers is performed at the cutting edges.
  • the cutting system has a processing device which is designed to carry out processing operations on the cut edges to reduce micro-short-circuits.
  • the processing device preferably has a laser structuring device which is designed to structure the cut edges.
  • the processing device preferably has a material application device that is designed to apply support materials to the cut edges.
  • the laser cutting device preferably has an ytterbium fiber laser, which has proved to be particularly advantageous for cutting polyethylene terephthalate.
  • the present invention also relates to an electric cell for an electrochemical energy storage device having separators cut by a cutting method as mentioned above and / or produced by means of a cutting system as mentioned above.
  • Fig. 1 is a schematic representation of a cutting system according to a
  • Fig. 2 is a flowchart for a cutting method after a
  • Fig. 1 shows a schematic representation of a cutting system 10 according to an embodiment of the present invention.
  • the cutting system 10 has a transporting device 5, which has for the introduction of the thermoplastic fibers to be cut as a carrier material
  • Separatorenbandes 1 or the thermoplastic fibers to be cut as carrier material having electrode tape 1 is configured to a laser cutting device 1.
  • the laser cutting device 2 intersects the separator belt 1 or the electrode belt at the cutting edge 3 with a laser cutting beam 2a.
  • the laser cutting device 2 is configured in such a way that at least one part of the thermoplastic polymer fibers is fused when cutting at the cutting edges 3.
  • Fig. 1 it is shown that preferably the cutting operation with a
  • Material beam 6a of the material application device 6 can be supported on the cutting edge 3. Furthermore, in FIG. 1, a laser structuring Device 4, which can structure the Separatorenband 1 or the electrode strip at the cutting edge 3 with a laser structuring beam 4a. After the cutting operations, the separators 1 'cut from the separator belt 1 or the electrodes cut from the electrode belt are removed from the cutting system 10 with the removal device 7.
  • Fig. 2 shows a flow chart for a cutting method according to an embodiment of the present invention.
  • the separator belt 1 to be cut is brought to the laser cutting device 2 in a step S1.
  • the separators 1 ' are cut out of the separator belt 1 with the laser cutting device 2 in such a way that at least one part of the thermoplastic synthetic fibers is cut at the cut edges 3 during cutting, whereby according to a preferred embodiment and in FIG. 2, in a step S3, machining operations are performed on the cut edges 3 in order to reduce microshorts.
  • step S3 is performed after step S2.
  • FIG. 2 it is shown that the step S2 of performing machining operations on the cut edges 3 a
  • Structuring the cut edges 3 and / or application of support materials may have at the cutting edges 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne un procédé pour découper des objets (1) en forme de feuille ou de plaque présentant comme matériau support des fibres synthétiques thermoplastiques, ces objets étant en particulier des électrodes et/ou des séparateurs pour réaliser un accumulateur d'énergie électrochimique, ou des parties de ces électrodes ou séparateurs, lequel procédé comporte les étapes consistant à : (S1) approcher les objets (1) à découper au niveau d'un dispositif de découpage au laser (2), (S2) découper les objets (1) au moyen du dispositif de découpage au laser (2) de manière à produire une fusion d'au moins une partie des fibres synthétiques thermoplastiques au niveau des arêtes de coupe (3). L'invention concerne en outre un système (10) pour découper des objets (1) en forme de feuille ou de plaque présentant comme matériau support des fibres synthétiques thermoplastiques, en particulier pour découper des électrodes et/ou des séparateurs pour réaliser un accumulateur d'énergie électrochimique, ou des parties de ces électrodes ou séparateurs, ce système de découpage (10) présentant un dispositif de transport (5) conçu pour approcher les objets (1) à découper au niveau d'un dispositif de découpage au laser (2), ainsi qu'un dispositif de découpage au laser (2) conçu pour découper les objets (1) de manière à produire une fusion d'au moins une partie des fibres synthétiques thermoplastiques au niveau des arêtes de coupe (3).
EP12734812.6A 2011-10-06 2012-07-05 Procédé et système pour découper des objets en forme de feuille ou de plaque Withdrawn EP2764561A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011115118A DE102011115118A1 (de) 2011-10-06 2011-10-06 Verfahren und System zum Schneiden von blatt- oder plattenförmigen Objekten
PCT/EP2012/002845 WO2013050088A1 (fr) 2011-10-06 2012-07-05 Procédé et système pour découper des objets en forme de feuille ou de plaque

Publications (1)

Publication Number Publication Date
EP2764561A1 true EP2764561A1 (fr) 2014-08-13

Family

ID=46507962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12734812.6A Withdrawn EP2764561A1 (fr) 2011-10-06 2012-07-05 Procédé et système pour découper des objets en forme de feuille ou de plaque

Country Status (3)

Country Link
EP (1) EP2764561A1 (fr)
DE (1) DE102011115118A1 (fr)
WO (1) WO2013050088A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2953184B1 (fr) * 2014-06-04 2018-08-01 Laser-Mikrotechnologie Dr. Kieburg GmbH Procédé de coupe au laser d'électrodes en feuilles et/ou de feuilles de séparation
JP6930822B2 (ja) * 2016-08-31 2021-09-01 三洋電機株式会社 二次電池用電極及び二次電池
EP3416210B1 (fr) * 2017-06-12 2020-12-02 Robert Bosch GmbH Procédé de découpe d'une feuille de séparation, feuille de séparation et cellule de batterie
NL2023085B1 (en) * 2019-05-08 2020-11-30 Innovative Mechanical Engineering Tech B V Method and device for depositing a fiber material layer on a carrier
CN111477833B (zh) * 2020-04-10 2023-04-18 孚能科技(赣州)股份有限公司 一种锂离子电池极片及其激光裁切制片方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326049A1 (de) * 1973-05-22 1974-12-12 Guenter Stumpf Vorrichtung zum schneiden mehrerer aufeinanderfolgender folien oder stofflagen
US4539463A (en) * 1984-02-24 1985-09-03 Continental Packaging Company, Inc. Trimming of polyester containers using a laser
JPS6452376A (en) * 1988-07-27 1989-02-28 Sanyo Electric Co Battery
US6806441B2 (en) * 2001-09-24 2004-10-19 Polyneer, Inc. Process for laser-cutting parts and removing flashing
JP5354646B2 (ja) * 2008-07-31 2013-11-27 Ｎｅｃエナジーデバイス株式会社 積層型二次電池およびその製造方法

Also Published As

Publication number Publication date
DE102011115118A1 (de) 2013-04-11
WO2013050088A1 (fr) 2013-04-11

Similar Documents

Publication Publication Date Title
EP2647070A1 (fr) Procédé et système pour découper des objets en forme de feuilles ou de plaques
EP2705556B1 (fr) Procédé et dispositif de fabrication d'enroulements d'électrode
WO2017055057A1 (fr) Procédé pour produire un assemblage d'électrodes
DE102017218137A1 (de) Verfahren zur Herstellung einer Elektrodenanordnung, Elektrodenanordnung und Batteriezelle mit einer solchen Elektrodenanordnung
EP3130018B1 (fr) Procédé et appareillage pour l'application d'une couche autoadhésive sur une cellule de stockage d'energie électrique
EP2764561A1 (fr) Procédé et système pour découper des objets en forme de feuille ou de plaque
DE212015000018U1 (de) Lithium-lonen-Zelle
DE102017216193A1 (de) Verfahren zur Herstellung von Elektroden
EP3878030A1 (fr) Procédé de fabrication d'un dispositif cathodique, procédé de fabrication d'un composite d'électrode et batterie
DE102017218130A1 (de) Verfahren zur Herstellung eines Stromableiters, Elektrode und Batteriezelle
WO2018059971A1 (fr) Procédé de fabrication d'un empilement de feuilles pour un élément de batterie
DE102011122658A1 (de) Verfahren und System zur Herstellung elektrochemischer Zellen für elektrochemische Energiespeicher
DE102010053341A1 (de) Verfahren und System zum Schneiden von blatt- oder plattenförmigen Objekten
DE102019213417A1 (de) Kombinierter Schneid-/Schweißprozess für Al und Cu Werkstoffe mit Wärmeakkumulation ultrakurzer Laserpulse
DE102017216143A1 (de) Verfahren zur Herstellung eines Elektrodenstapels für eine Batteriezelle und Batteriezelle
WO2012079705A1 (fr) Procédé et système de fabrication d'objets en forme de feuille ou de plaque
DE102016225221A1 (de) Verfahren zur Herstellung eines Elektrodenstapels für eine Batteriezelle und Batteriezelle
DE102012212419A1 (de) Verfahren zum Herstellen eines Energiespeichers und Energiespeicher
EP2789035A1 (fr) Procédé et système de fabrication d'objets en forme de feuilles ou de plaques
DE102017207766A1 (de) Verfahren zur Herstellung eines Elektrodenstapels für eine Batteriezelle und Batteriezelle
DE102017216209A1 (de) Verfahren zur Herstellung eines Elektrodenstapels für eine Batteriezelle und Batteriezelle
DE102017216131A1 (de) Verfahren zur Herstellung eines Elektrodenstapels für eine Batteriezelle und Batteriezelle
EP4425619A2 (fr) Procédé et dispositif de recyclage de batteries
EP3605697A1 (fr) Procédé de fabrication d'une bobine d'électrodes-séparateur, bobine d'électrodes-séparateur et pile bouton dotée d'une telle bobine
DE102021202644A1 (de) Verfahren zur Herstellung einer Ableiterfolie für Batterien

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140320

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RIC1 Information provided on ipc code assigned before grant

Ipc: H01M 4/139 20100101AFI20161215BHEP

Ipc: H01M 2/14 20060101ALI20161215BHEP

Ipc: H01M 10/04 20060101ALI20161215BHEP

Ipc: H01M 4/80 20060101ALI20161215BHEP

Ipc: H01M 2/16 20060101ALI20161215BHEP

Ipc: B23K 26/06 20140101ALI20161215BHEP

Ipc: B23K 26/38 20140101ALI20161215BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170202

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20170613