EP2652817A1 - Procédé et système de fabrication d'objets en forme de feuille ou de plaque - Google Patents

Procédé et système de fabrication d'objets en forme de feuille ou de plaque

Info

Publication number
EP2652817A1
EP2652817A1 EP11802274.8A EP11802274A EP2652817A1 EP 2652817 A1 EP2652817 A1 EP 2652817A1 EP 11802274 A EP11802274 A EP 11802274A EP 2652817 A1 EP2652817 A1 EP 2652817A1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
object side
manufacturing
electrodes
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Withdrawn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
EP11802274.8A
Other languages
German (de)
English (en)
Inventor
Tim Schaefer
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 EP2652817A1 publication Critical patent/EP2652817A1/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Withdrawn legal-status Critical Current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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a method and a system for the production of sheet-like or plate-shaped objects, in particular for the production of electrodes and / or separators for the construction of an electrochemical energy store or of 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.
  • rechargeable batteries are also referred to as batteries.
  • an "electrochemical energy store” is to be understood as meaning any type of energy store from which electrical energy can be withdrawn, wherein an electrochemical reaction takes place in the interior of the energy store
  • the term comprises energy stores of all kinds, in particular primary batteries and secondary batteries
  • the electrochemical energy storage device has at least one
  • the plurality of electrochemical cells may be connected in parallel to store a larger amount of charge, or may be connected in series to provide a desired operating voltage, or may be a combination of parallel and series connection.
  • an “electrochemical cell” is meant a device which serves to deliver electrical energy storing the energy in a chemical form
  • the cell is also designed to receive electrical energy, convert it to chemical energy, and
  • the shape (ie in particular the size and the geometry) of an electrochemical cell can be selected depending on the available space.
  • the electrochemical cell is substantially prismatic or cylindrical.
  • the present invention can be advantageously used in particular for electrochemical cells. referred to as pouch cells or coffeebag cells without the electrochemical cell of the present invention being restricted 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 accommodated by a separator, the separator then separating the electrodes.
  • the electrode stack has a plurality of layers of electrodes and electrodes Separators, wherein the electrodes of the same polarity are each preferably electrically - -
  • the electrodes are for example plate-shaped or foil-like and are preferably arranged substantially parallel to one another (prismatic energy storage cells).
  • the electrode stack can also be wound and have a substantially cylindrical shape (cylindrical energy storage cells).
  • the term "electrode stack" is also intended to include such electrode windings
  • the electrode stack may also comprise lithium or another alkali metal in ionic form.
  • 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 processes.
  • this object is achieved in a method for the production of sheet-like or plate-shaped objects, in particular for the production of electrodes and / or separators for the construction of an electrochemical energy store or of parts of such electrodes, wherein the sheet-like or plate-shaped objects a first object side and have a second object side opposite the first object side, achieved in that the manufacturing method comprises a step of applying a structuring on the first object side by means of a first radiation device, in particular a first laser device.
  • a first radiation device in particular a first laser device.
  • the capacity of the cells can be increased. Another advantage is that the discharge rates can be increased.
  • the production method has the step of detecting properties of the first object side, in particular during the step of applying the structuring to the first object side.
  • a first excimer laser in particular a first excimer laser with a working wavelength of 248 nm, is used for applying the structuring to the first object side.
  • This process is also suitable for continuous production processes in continuous production lines.
  • the method is also suitable for producing a very large number of objects. Thus, it offers particular advantages for the production of electrodes or separators for the construction of electrochemical energy storage.
  • a "sheet-like or plate-shaped object” is to be understood as meaning a substantially flat article, preferably a thin flat article
  • the first and the second object sides respectively form the surface of such a flat article, wherein the first and the second object sides preferably extend substantially parallel to one another without
  • the first and second object pages can in principle assume any desired shapes, preferably the first and the second object pages are each selected to be essentially rectangular; in this case, rejects the object - -
  • the thickness of the objects is basically arbitrary, it ranges preferably from film thickness to plate thickness.
  • the first object side of the object may also be referred to as the object top side, and the second object side of the object may also be referred to as the object bottom side, or vice versa.
  • a conveyor belt is to be understood as meaning a conveyor belt for transporting the objects with which the objects are transported and preferably adhered by vacuum, mechanically, electrostatically or magnetically.
  • the conveyor belt is a vacuum belt to which the objects adhere by negative pressure.
  • Typical components of a typical vacuum belt are a conveyor belt, at least one vacuum channel, a conveyor belt and at least one vacuum pump.
  • the manufacturing method comprises the step of applying a structuring on the second object side by means of a second radiation device, in particular a second laser device.
  • the first and second radiation devices are preferably two different, separate devices, but may alternatively be one and the same device.
  • the production method comprises the step of detecting properties of the second object side, in particular during step S6.
  • a second excimer laser in particular a second excimer laser with a working wavelength of 248 nm, is used for step S6.
  • structuring is applied to the first object side in step S3 and / or to the second object side in step S6 in a continuous process. This can shorten the duration of the manufacturing process.
  • the manufacturing method comprises the steps of: turning the object on the first conveyor such that the first object side faces the first conveyor, and moving the object with the first conveyor to the second radiation device.
  • the manufacturing method may comprise the steps prior to step S6: transferring the object from the first conveyor belt to a second conveyor belt such that the first object side faces the second conveyor belt, and moving the object with the second conveyor belt to the second conveyor belt radiation device.
  • the object is transferred after the step S6 in a step S7 from the second conveyor belt on a third conveyor belt, wherein the second object side faces the third conveyor belt.
  • the object can preferably be supplied to a further processing method or be transported on.
  • the object is transferred in step S4 and / or in step S7 with a constant orientation relative to the direction of the first and the second conveyor belt between the two conveyor belts.
  • a material may be selected from a group comprising:
  • the system according to the invention is used for the production of sheet-like or plate-shaped objects, in particular for the production of electrodes and / or separators for the construction of an electrochemical energy store or of , _
  • the production system has a first radiation device, in particular a first laser device, which is arranged and configured such that it can apply a structuring to the first object side. It has proved to be advantageous if the production system has a first detection unit which is arranged and configured for monitoring properties of the first object side.
  • the first laser device preferably has a first excimer laser, in particular a first excimer laser with a working wavelength of 248 nm.
  • the production system has a first conveyor belt for moving the object to the first radiation device, wherein the first conveyor belt is arranged and configured such that it receives the object so that the second object side faces the first conveyor belt.
  • the production system preferably has a second radiation device, in particular a second laser device, which is arranged and configured such that it can apply a structuring to the second object side.
  • the manufacturing system may include a second detection unit arranged and configured to monitor characteristics of the second object side.
  • the second laser device preferably has a second excimer laser, in particular a second excimer laser with a working wavelength of 248 nm.
  • the manufacturing system may comprise a turning device, which is arranged and configured to turn the object on the first conveyor belt such that the first object side faces the first conveyor belt.
  • the manufacturing system may include a second conveyor for picking up the object from the first conveyor and for moving the object to the second radiation device, wherein the second conveyor is arranged and configured to receive the object such that the first Object side facing the second conveyor belt.
  • the first conveyor belt and the second conveyor belt are arranged overlapping each other in their running direction, wherein the amount of overlap preferably corresponds at least to the size of an object in the running direction of the first and second conveyor belt.
  • the manufacturing system may comprise a third conveyor belt configured and arranged to take over the object from the second conveyor belt.
  • a suction direction of the first conveyor belt is selected opposite to a suction direction of the second conveyor belt.
  • An advantage of this embodiment is the possibility of a compact design of the manufacturing system.
  • the first conveyor belt and the second conveyor belt are arranged overlapping each other in their running direction, wherein preferably the degree of overlap corresponds at least to the size of an object in the running direction of the first or second conveyor belt.
  • An advantage of this embodiment is the possibility of a compact design of the manufacturing system.
  • At least a third conveyor belt for taking over the object of the second conveyor belt is provided. - -
  • the present invention also relates to an electric cell for an electrochemical energy storage device with electrodes, which has been produced according to a production method mentioned above and / or produced by means of a production system mentioned above. Further advantages, features and applications of the present invention will become apparent from the following description taken in conjunction with the drawings.
  • 1 is a cross-sectional view of a manufacturing system according to a preferred embodiment of the invention, a flow chart of an embodiment of a manufacturing method according to the present invention, a flow chart of another embodiment of a manufacturing method according to the present invention, an example of an electrode surface before applying patterning, and FIG an example of an electrode surface after the application of a structuring according to the invention.
  • FIG. 1 shows a schematic representation of a manufacturing system 50 according to the present invention.
  • the production system 50 has for electrodes 10 with an upper side (first object side) 11 and a lower side (second object side) 12 a first conveyor belt 1, a first conveyor device 1 associated with this first radiation device 21, a second conveyor belt 2, a - -
  • this second conveyor belt 2 associated second radiation device 22 and a third conveyor belt 3 for continuing the electrodes 10.
  • the electrodes 10 are arranged on the first conveyor belt 1 with its underside 12 in the direction of the conveyor belt 1.
  • the first and the second conveyor belt 1, 2 are arranged in an advantageous manner so that the suction direction of the first conveyor belt 1 opposite to the suction direction of the second conveyor belt 2 is selected and that the first and the second conveyor belt 1, 2 are arranged overlapping each other in their running direction.
  • the degree of overlapping may preferably correspond at least to the size of an electrode 10 in the running direction of the first or second conveyor belt 1, 2.
  • the electrodes 10 can be transferred from the first conveyor belt 1 to the second conveyor belt 2 such that the electrodes 10 are arranged with their upper side 11 in the direction of the second conveyor belt 2, without the electrodes 10 must be rotated during this transfer.
  • the third conveyor belt 3 connects in a similar manner to the second conveyor belt 2.
  • the manufacturing system has a common conveyor belt on which the object after the first radiation device and before the second radiation device by means of a turning device from the second object side are turned to the first object side.
  • the electrodes 10 in FIG. 1 are not drawn to scale and are not drawn in the plane between the vacuum bands 1, 3 on the one hand and the conveyor belt 2 on the other hand.
  • a step S1 first the electrodes 10 are arranged on the first conveyor belt 1.
  • the electrodes 10 are then moved with the first conveyor belt 1 to the first radiation device 21.
  • structuring by means of the first radiation device 21 is applied to the first object sides 11 of the electrodes 10.
  • This step S3 may include a step S3a of monitoring the first object pages 11.
  • the electrodes 10 are now transferred from the first conveyor belt 1 to the second conveyor belt 2. Due to the overlap of the two vacuum bands 1, 2 and their mutual orientation with opposite suction effects, the electrodes 10 are arranged with their upper side 1 1 to the second conveyor belt 2 out. With the aid of the second conveyor belt 2, the electrodes 10 are then moved in a step S5 to the second radiation device 22.
  • a step S6 structuring with the second radiation device 22 is then applied to the second object sides 12 of the electrodes 10 on the second conveyor belt 2.
  • the electrodes 10 are subsequently transferred from the second conveyor belt 2 to the third conveyor belt 3. This transfer takes place in the reverse manner to the transfer between the first and the second conveyor belt 1, 2.
  • the electrodes 10 are finally continued on the conveyor belt 3.
  • a step S1 first the electrodes 10 are arranged on a conveyor belt.
  • the electrodes 10 are then moved with the conveyor belt to the first radiation device 21.
  • structuring by means of the first radiation device 21 is applied to the first object sides 11 of the electrodes 10, wherein this step S3 may comprise a step S3a of monitoring the first object sides 11.
  • the electrodes 10 are now on the conveyor belt with - -
  • a turning device turned from the second object pages to the first object pages.
  • the electrodes 10 are then moved in a step S5 to the second radiation device 22.
  • a step S6 structuring with the second radiation device 22 is then applied to the second object sides 12 of the electrodes 10 on the conveyor belt. Subsequently, the electrodes 10 are continued on the conveyor belt.
  • FIG. 4a shows an example of a scanning electron micrograph of an electrode surface before applying a structuring
  • FIG. 4b shows an example of a scanning electron micrograph of an electrode surface after the application of a structuring.
  • the electrode surface provided with the structuring has a roughening and an enlargement of the active surface. Due to this roughening, wetting with electrolytes can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un système de fabrication d'objets en forme de feuille ou de plaque (10), en particulier pour la fabrication d'électrodes et/ou de séparateurs pour la construction d'un accumulateur d'énergie électrochimique ou de parties de telles électrodes, les objets en forme de feuille ou de plaque (10) comportant une première face d'objet (11) et une seconde face d'objet (12) opposée à la première face d'objet, et le système de fabrication (50) comportant un premier dispositif de rayonnement (21), en particulier un premier dispositif laser, qui est agencé et installé de telle sorte qu'il peut appliquer une structuration sur la première face d'objet (12).
EP11802274.8A 2010-12-17 2011-11-30 Procédé et système de fabrication d'objets en forme de feuille ou de plaque Withdrawn EP2652817A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010055053A DE102010055053A1 (de) 2010-12-17 2010-12-17 Verfahren und System zur Herstellung von blatt- oder plattenförmigen Objekten
PCT/EP2011/006013 WO2012079705A1 (fr) 2010-12-17 2011-11-30 Procédé et système de fabrication d'objets en forme de feuille ou de plaque

Publications (1)

Publication Number Publication Date
EP2652817A1 true EP2652817A1 (fr) 2013-10-23

Family

ID=45420556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11802274.8A Withdrawn EP2652817A1 (fr) 2010-12-17 2011-11-30 Procédé et système de fabrication d'objets en forme de feuille ou de plaque

Country Status (6)

Country Link
EP (1) EP2652817A1 (fr)
JP (1) JP2013546146A (fr)
KR (1) KR20140032971A (fr)
CN (1) CN103283059A (fr)
DE (1) DE102010055053A1 (fr)
WO (1) WO2012079705A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011120278A1 (de) * 2011-12-05 2013-06-06 Li-Tec Battery Gmbh Verfahren und System zur Herstellung von blatt- oder plattenförmigen Objekten
DE202012008127U1 (de) 2012-08-27 2013-12-04 BROSE SCHLIEßSYSTEME GMBH & CO. KG Kraftfahrzeugschließeinrichtung
EP4152469B1 (fr) 2021-09-17 2024-06-05 Technische Universität Berlin Procédé et dispositif de fabrication d'un assemblage d'électrodes et de séparateur pour un élément de batterie

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506556A1 (de) * 1985-02-25 1986-09-04 Oscar von 3008 Garbsen Wedekind Verfahren und vorrichtung zum reinigen von flaechigen kleinteilen, insbesondere muenzen
WO1998016964A1 (fr) * 1996-10-15 1998-04-23 Farmer Mold & Machine Works, Inc. Appareil pour assemblage de batterie
JP2000323174A (ja) * 1999-05-12 2000-11-24 Japan Storage Battery Co Ltd 非水電解質二次電池
US7495349B2 (en) * 2003-10-20 2009-02-24 Maxwell Technologies, Inc. Self aligning electrode
JP2005158397A (ja) * 2003-11-25 2005-06-16 Ngk Spark Plug Co Ltd リチウム電池およびその製造方法
JP5220477B2 (ja) * 2007-05-24 2013-06-26 日東電工株式会社 多孔質フィルムの製造方法及び多孔質フィルム、並びに非水電解質電池用セパレータ及びこれを用いた非水電解質電池
JP5272564B2 (ja) * 2008-08-04 2013-08-28 日産自動車株式会社 電極材乾燥方法および電極材乾燥装置

Non-Patent Citations (1)

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Title
See references of WO2012079705A1 *

Also Published As

Publication number Publication date
CN103283059A (zh) 2013-09-04
WO2012079705A1 (fr) 2012-06-21
DE102010055053A1 (de) 2012-06-21
KR20140032971A (ko) 2014-03-17
JP2013546146A (ja) 2013-12-26

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