WO2009103521A1 - Cellule galvanique plate et procédé destiné à fermer un orifice de remplissage électrolytique de cellule galvanique plate - Google Patents

Cellule galvanique plate et procédé destiné à fermer un orifice de remplissage électrolytique de cellule galvanique plate Download PDF

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Publication number
WO2009103521A1
WO2009103521A1 PCT/EP2009/001173 EP2009001173W WO2009103521A1 WO 2009103521 A1 WO2009103521 A1 WO 2009103521A1 EP 2009001173 W EP2009001173 W EP 2009001173W WO 2009103521 A1 WO2009103521 A1 WO 2009103521A1
Authority
WO
WIPO (PCT)
Prior art keywords
elektrolyteinfüllöffnung
flat cell
frame material
filling opening
electrolyte filling
Prior art date
Application number
PCT/EP2009/001173
Other languages
German (de)
English (en)
Inventor
Jens Meintschel
Dirk Schröter
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2009103521A1 publication Critical patent/WO2009103521A1/fr

Links

Classifications

    • 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
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • H01M50/645—Plugs
    • 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 of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
    • 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 of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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 of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/121—Organic material
    • 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
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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

  • Galvanic flat cell and method for closing an electrolyte filling opening of the galvanic flat cell
  • the invention relates to a galvanic flat cell, comprising a circulating frame arranged between two enveloping plates lying substantially parallel to one another and having a closable electrolyte filling opening, wherein the frame is formed from a frame material.
  • the invention further relates to a method for closing the electrolyte filling opening of the galvanic flat cell.
  • the cells have a filling opening, which with a Closing element, in particular a blind rivet, a screw or a plug is closed.
  • a Closing element in particular a blind rivet, a screw or a plug is closed.
  • the object is achieved by a galvanic flat cell with the features of claim 1 and by a method having the features of claim 11.
  • a galvanic flat cell comprises a surrounding frame with a closable electrolyte filling opening arranged between two enveloping plates arranged substantially parallel to one another.
  • the frame is formed of a frame material.
  • the electrolyte filling opening can be closed by means of thermal welding at least with the participation of the frame material in the region of the electrolyte filling opening. Welding is the permanent joining of components using heat and / or pressure - with or without welding consumables.
  • the components involved in this case at least the frame material in the region of the electrolyte filling opening are at least partially melted and adjacent, molten areas of the components involved welded together during solidification, in particular without welding consumables.
  • a plug is inserted into the electrolyte filling opening and welded to the frame material in the region of the electrolyte filling opening.
  • the plug is formed from the frame material, since a welding of similar materials is particularly simple.
  • the frame material is a thermoplastic material, such as polypropylene, since this is particularly easy to thermally deform and has good insulator properties.
  • the plug is in particular inserted by means of a heated riveting tool into the electrolyte filling opening and welded to the frame material in the region of the electrolyte filling opening.
  • the riveting tool serves both the entry of heat and the mechanical compression of the plug with the frame material of the frame in the region of the electrolyte filling opening.
  • Electrolyte filling a preform formed from the frame material which is deformable by means of heat and pressure to close the Elektrolytein colllö réelle and welded.
  • the preform may be formed, for example, in the manner of a spout protruding from the electrolyte filling opening, through which the electrolyte is filled.
  • the sleeve-shaped preform is melted by means of the riveting tool and pressed under slight mechanical pressure into the electrolyte filling opening, where the inner walls of the preform finally fuse together, ie are welded.
  • the preform is already formed on the frame, for example by means of injection molding, so that no additional components are required and must be kept in the riveting tool.
  • one of the cladding sheets in the region of the electrolyte filling opening has a protruding tab which is bent over the electrolyte filling opening by means of a heated bending punch and welded to the frame material in the region of the electrolyte filling opening by heat input from the bending punch.
  • the frame material is partially melted in the region of the electrolyte filling opening and welded during solidification with the tab embedded therein.
  • the protruding tab is preferably chemically and / or mechanically pretreated to improve adhesion of the frame material.
  • a chemical pretreatment for example, foreign substances are removed from the surface of the metallic tab.
  • a mechanical pretreatment the surface of the tab is roughened, for example. Both measures allow an improved penetration of the surface of the tab with the frame material and thus a more durable connection.
  • FIG. 1 is a perspective view of a galvanic flat cell with two cladding sheets and an interposed, circulating frame
  • 2 shows a perspective view of a part of the galvanic flat cell from FIG. 1 with an electrolyte filling opening, a plug and a riveting tool
  • FIG. 3 shows a sectional view of a part of the galvanic flat cell from FIG. 2 with the unclosed electrolyte filling opening, FIG.
  • FIG. 4 shows a sectional view of a part of the galvanic flat cell from FIG. 2 with the electrolyte filling opening closed by the plug
  • FIG. 5 shows a perspective view of a part of the galvanic flat cell from FIG. 1 with an electrolyte filling opening, a preform formed thereon and a riveting tool, FIG.
  • FIG. 6 shows a sectional view of a part of the galvanic flat cell from FIG. 5 with the unclosed electrolyte fill opening, FIG.
  • Fig. 7 is a sectional view of a part of the galvanic
  • FIG. 8 shows a perspective view of a part of the galvanic flat cell from FIG. 1 with an electrolyte filling opening, a tab formed on one of the enveloping plates, and a bending stamp
  • FIG. 9 shows a sectional view of a part of the galvanic flat cell from FIG. 8 with the unclosed electrolyte filling opening
  • FIG. 9 shows a sectional view of a part of the galvanic flat cell from FIG. 8 with the unclosed electrolyte filling opening
  • Fig. 10 is a sectional view of a part of the galvanic
  • FIG. 1 shows a galvanic flat cell 1 with two enveloping plates 2.1, 2.2 arranged substantially parallel to one another and a peripheral frame 3 arranged therebetween.
  • the cladding sheets 2.1, 2.2 represent the poles of the galvanic flat cell 1 for contacting with adjacent flat cells 1 in a battery block or for contacting the battery pack.
  • the frame 3 is formed of an insulating frame material, such as a plastic, to isolate the cladding sheets 2.1, 2.2 from each other.
  • the frame material is designed as a thermoplastic material, for example polypropylene.
  • FIG. 2 shows part of the galvanic flat cell 1 from FIG. 1 with an electrolyte filling opening 5 arranged in the frame 3.
  • the Elektrolytein colllö réelle 5 is used to fill an electrolyte in the galvanic flat cell 1 after the Assembly. It must be tightly closed after the filling process.
  • a plug 6 is provided for closing, which is preferably formed from the frame material, in particular a thermoplastic material, for example polypropylene.
  • the plug 6 is pressed into the electrolyte filling opening 5 by means of a heated riveting tool 7, partially melted by the heat of the riveting tool 7 as well as the frame material of the frame 3 in the region of the electrolyte filling opening 5 and thus welded to the frame material of the frame 3 in the region of the electrolyte filling opening 5.
  • FIG. 3 shows a sectional view of a part of the galvanic flat cell 1 from FIG. 2 with the still unclosed electrolyte filling opening 5.
  • the galvanic flat cell 1 has an electrode stack 8 between the enveloping sheets 2.1, 2.2, in which aluminum and copper foils coated, for example, with electrochemically active materials are superimposed stacked and each separated by a separator.
  • the electrolyte filling opening 5 has a projection 9, on which the plug 6 can rest so that it does not pass completely through the electrolyte filling opening 5 into the interior of the galvanic flat cell 1.
  • the heated riveting tool 7 has a receptacle in which the stopper 6 can be held.
  • FIG. 4 shows the part of the galvanic flat cell 1 from FIGS. 2 and 3 with the electrolyte filling opening 5 closed by the plug 6.
  • the plug 6 was by means of the heated riveting tool 7 in the Electrolyte filling opening 5 is pressed and heated. Due to the heat of the riveting tool 7, the stopper 6 as well as the frame material of the frame 3 in the region of the electrolyte filling opening 5, in particular in the region of the projection 9, has been partially melted and when cooling, the stopper 6 is welded to the projection 9, so that the electrolyte filling opening 5 is sealed.
  • a melting and welding of the plug 6 with the frame material of the frame can be achieved apart from the projection 9 in other parts of the Elektrolytinhellötechnisch 5.
  • an increased heat input by the heated riveting tool 7 may be required.
  • the electrolyte filling opening 5 and the plug 6 may be shaped differently than shown in the embodiment.
  • the projection 9 can be dispensed with.
  • FIG. 5 shows a part of the galvanic flat cell 1 from FIG. 1 with the electrolyte filling opening 5 in a further embodiment.
  • a preform 10.1 formed from the frame material is formed in the form of a spout projecting out of the electrolyte filling opening 5, through which the electrolyte can be filled into the cell.
  • the closing of the electrolyte filling opening 5 takes place by remelting and welding of the preform 10. 1 by supplying heat under pressure from the heated riveting tool 7, which here serves as a forming tool.
  • FIG. 6 shows a sectional view of a part of the galvanic flat cell 1 from FIG. 5 with the still unclosed electrolyte filling opening 5.
  • the heated riveting tool 7 has a recess, by means of which a defined deformation of the preform 10.1 under heat and pressure can be achieved.
  • FIG. 7 shows the part of the galvanic flat cell 1 from FIGS. 5 and 6, wherein the electrolyte filling opening 5 is closed by the preform 10.2 deformed under heat and pressure by the heated riveting tool 7.
  • the preform 10.1 was melted and transferred by the heated riveting tool 7 in the deformed preform 10.2.
  • Previously unconnected parts of the preform 10.1 are welded together when cooling the deformed preform 10.2, so that the Elektrolytein spallö réelle 5 is sealed.
  • FIG. 8 shows a part of the galvanic flat cell 1 from FIG. 1 with the electrolyte filling opening 5 in a further embodiment.
  • a tab 11 is provided in the region of the electrolyte filling opening 5, which extends beyond the frame 3.
  • the tab 11 is bent over the electrolyte filling opening 5.
  • the frame material now lying underneath the bent tab 11 is partially melted in the area of the electrolyte filling opening 5 and welded to the tab 11 during solidification.
  • FIG. 9 shows a sectional view of a part of the galvanic flat cell 1 from FIG. 8 with the electrolytic filling opening 5 still open.
  • the tab 11 On the covering sheet 2.2, in the region of the electrolyte filling opening 5, the tab 11 is provided which extends beyond the frame 3.
  • the tab 11 has been bent over the electrolyte filling opening 5 by means of the heated bending punch 12.
  • the bending punch 12 has for this purpose a slope which favors the desired bending direction of the tab 11.
  • the frame material now lying underneath the bent tab 11 is partially melted in the area of the electrolyte filling opening 5 and welded to the tab 11 during solidification, so that the electrolyte filling opening 5 is sealed.
  • the plug 6 may alternatively be formed of a different material than the frame material, but in particular of a thermally deformable plastic.
  • the preform 10.1 may be formed deviating from the shape of a spout.

Abstract

L'invention concerne une cellule galvanique plate (1) comportant un cadre (3) qui s'étend entre deux enveloppes en tôle (2.1, 2.2) sensiblement parallèles, est doté d'un orifice de remplissage électrolytique (5) refermable et est formé d'un matériau pour cadre. L'invention porte également sur un procédé destiné à fermer l'orifice de remplissage électrolytique (5) par soudure thermique qui intègre au moins le matériau du cadre dans la zone de l'orifice de remplissage électrolytique (5).
PCT/EP2009/001173 2008-02-23 2009-02-19 Cellule galvanique plate et procédé destiné à fermer un orifice de remplissage électrolytique de cellule galvanique plate WO2009103521A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008010827.8 2008-02-23
DE102008010827A DE102008010827A1 (de) 2008-02-23 2008-02-23 Galvanische Flachzelle und Verfahren zum Verschließen einer Elektrolyteinfüllöffnung der galvanischen Flachzelle

Publications (1)

Publication Number Publication Date
WO2009103521A1 true WO2009103521A1 (fr) 2009-08-27

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ID=40591878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001173 WO2009103521A1 (fr) 2008-02-23 2009-02-19 Cellule galvanique plate et procédé destiné à fermer un orifice de remplissage électrolytique de cellule galvanique plate

Country Status (2)

Country Link
DE (1) DE102008010827A1 (fr)
WO (1) WO2009103521A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130049535A (ko) * 2011-11-04 2013-05-14 삼성에스디아이 주식회사 이차 전지
DE102022003450B3 (de) 2022-09-19 2023-11-23 Mercedes-Benz Group AG Gehäuse für eine Batterieeinzelzelle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT334616B (de) * 1971-04-05 1976-01-25 Kapsch Telephon Telegraph Verfahren zum dichten verbinden eines behaltermantels aus thermoplastischem kunststoff mit einem boden- oder deckelteil aus thermoplastischem kunststoff mittels ultraschall
JP2000048804A (ja) * 1998-07-30 2000-02-18 Gs Merukotekku Kk 電池の製造方法及びその電池
JP2000106156A (ja) * 1998-09-30 2000-04-11 Matsushita Electric Ind Co Ltd 密閉電池
JP2001057207A (ja) * 1999-08-18 2001-02-27 Nec Mobile Energy Kk 密閉型電池およびその製造方法
US6361898B1 (en) * 1996-10-03 2002-03-26 Wilson Greatbatch Ltd. Container having a hermetic seal
JP2004327453A (ja) * 2004-07-16 2004-11-18 Hitachi Maxell Ltd 角形密閉式蓄電池およびその製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398346A (en) * 1981-10-23 1983-08-16 Medtronic, Inc. Method for lithium anode and electrochemical cell fabrication
US5173375A (en) * 1990-12-14 1992-12-22 Medtronic, Inc. Electrochemical cell with improved fill port
DE4240339C1 (de) 1992-12-01 1993-12-09 Deutsche Automobilgesellsch Elektrochemischer Speicher und Verfahren zu seiner Herstellung
DE102007063176A1 (de) 2007-12-20 2008-09-11 Daimler Ag Batterie mit einer Wärmeleitplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT334616B (de) * 1971-04-05 1976-01-25 Kapsch Telephon Telegraph Verfahren zum dichten verbinden eines behaltermantels aus thermoplastischem kunststoff mit einem boden- oder deckelteil aus thermoplastischem kunststoff mittels ultraschall
US6361898B1 (en) * 1996-10-03 2002-03-26 Wilson Greatbatch Ltd. Container having a hermetic seal
JP2000048804A (ja) * 1998-07-30 2000-02-18 Gs Merukotekku Kk 電池の製造方法及びその電池
JP2000106156A (ja) * 1998-09-30 2000-04-11 Matsushita Electric Ind Co Ltd 密閉電池
JP2001057207A (ja) * 1999-08-18 2001-02-27 Nec Mobile Energy Kk 密閉型電池およびその製造方法
JP2004327453A (ja) * 2004-07-16 2004-11-18 Hitachi Maxell Ltd 角形密閉式蓄電池およびその製造方法

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