US20050008933A1 - Electric coupling of a connection to an electrochemical bundle - Google Patents

Electric coupling of a connection to an electrochemical bundle Download PDF

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Publication number
US20050008933A1
US20050008933A1 US10/820,788 US82078804A US2005008933A1 US 20050008933 A1 US20050008933 A1 US 20050008933A1 US 82078804 A US82078804 A US 82078804A US 2005008933 A1 US2005008933 A1 US 2005008933A1
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US
United States
Prior art keywords
electrodes
folded
strips
plane connection
welded
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.)
Abandoned
Application number
US10/820,788
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English (en)
Inventor
Dominique Ligeois
Philippe Lacoste
Franck Fargeas
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.)
SAFT Societe des Accumulateurs Fixes et de Traction SA
Original Assignee
SAFT Societe des Accumulateurs Fixes et de Traction SA
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 SAFT Societe des Accumulateurs Fixes et de Traction SA filed Critical SAFT Societe des Accumulateurs Fixes et de Traction SA
Assigned to SAFT, SA reassignment SAFT, SA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIGEOIS, DOMINIQUE, FARGEAS, FRANCK, LACOSTE, PHILIPPE
Publication of US20050008933A1 publication Critical patent/US20050008933A1/en
Priority to US12/272,146 priority Critical patent/US8007549B2/en
Abandoned legal-status Critical Current

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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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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
    • 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
    • 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
    • Y10T29/49114—Electric battery cell making including adhesively bonding

Definitions

  • the present invention relates to a system of electric coupling between a connection electrically connected to a current output terminal, and an electrochemical bundle. It moreover extends to the method for producing this coupling.
  • An electrochemical generator comprises an electrochemical bundle comprising an alternating sequence of positive and negative electrodes framing a separator impregnated with electrolyte.
  • Each electrode most often comprises a metal current collector supporting on at least one of its surfaces the electrochemically active material.
  • the electrode is connected electrically to a current output which ensures electrical continuity between the electrode and the external application with which the generator is associated. This current output can be the container of the generator or a current output terminal.
  • the electric coupling is carried out by means of a full disk arranged then welded on the winding section of the spirally wound electrodes.
  • the document USA 009 053 describes a generator with alkaline electrolyte and spirally wound electrodes. It shows a plane circular connection carrying radial slots having the form of lances, the turned-down edges of which serve to establish the electric contact with the collector of the spirally wound electrode.
  • the electrode support is a nickel-coated steel strip approximately 0.2 mm thick. There are no particular difficulties with welding directly to the strip section a piece electrically connected to the terminal.
  • the support of the positive electrode is generally a thin aluminium strip less than 50 ⁇ m thick and that of the negative electrode is a thin copper strip less than 50 ⁇ m thick. Such thinnesses do not offer the mechanic resistance necessary for producing reliable welds on the electrode section.
  • an electrochemical generator comprising an alternating sequence of spirally wound positive and negative electrodes constituting an electrochemical bundle.
  • Each electrode comprises a metal strip serving as a current collector.
  • the strips of the same polarity respectively jut out towards the outside of the bundle in order to form a plane base on which a plane connection is attached.
  • the portions of the strips jutting out on either side of the electrochemical bundle do not however form a continuous plane base.
  • the strips are folded at 90° by a pressing tool. Such a method does not make it possible to produce a metal barrier with folded strips forming a continuous plane base.
  • the document FR-2 748 606 proposes for example a method of connection by expansion.
  • the edges of the electrodes are put together in two semi-bundles coupled horizontally to the current output terminal.
  • the present invention aims to eliminate the drawbacks of the prior art and, in particular, to propose a solution which can easily be produced industrially.
  • the invention aims to propose a system of electric coupling by the welding of a plane connection to the electrode section of the same polarity in a manner simpler than the systems described in the prior art.
  • the subject of the present invention is a system of electric coupling of a plane connection to the electrodes of the same polarity of an electrochemical bundle comprising an alternating sequence of at least one positive electrode and at least one negative electrode framing a separator, each electrode comprising a metal strip less than 50 ⁇ m thick, serving as current collector, at least one surface of which is coated with electrochemically active material, the strips of the electrodes of each polarity comprising a non-coated lateral band emerging respectively from the opposite ends of said bundle, characterized in that the lateral bands of the strips of the same polarity are folded in a direction approximately perpendicular to their initial direction at a height at least equal to the distance separating them from the adjacent strips of the same polarity in order to form an approximately plane and continuous base to which said plane connection is welded.
  • the lateral bands are folded at a height comprised between 3 and 4 mm.
  • the space found between two successive strips is re-covered and closed by the folded part, preventing any intrusion of material inside the electrochemical bundle.
  • the invention therefore has the advantage of considerably reducing the risks of short-circuits between the electrodes of the opposite polarity.
  • the strips In order to allow them to fold in the desired manner, the strips must not exceed 50 ⁇ m in thickness. However for reasons of mechanical strength and resistance to manipulation, the strips preferably have a minimum thickness comprised between 10 ⁇ m and 15 ⁇ m; a minimum of 10 ⁇ m for a copper strip and a minimum of 15 ⁇ m for an aluminium strip.
  • connection is electrically connected to a current output.
  • connection constitutes a current output.
  • the electrochemical bundle comprises a positive electrode and a negative electrode, framing a separator, which are spirally wound in order to form a coil.
  • the non-coated part of the positive strip will project out of one of the circular sections and that of the negative strip symmetrically out of the other section.
  • the lateral band of the positive electrode has a height comprised between 13 mm and 17 mm.
  • the lateral band of the negative electrode has a height comprised between 8 mm and 12 mm.
  • the plane connection is welded at a distance of at least 3 mm from one end of the separator of the electrochemical bundle.
  • the lateral bands are folded in a concertina manner.
  • the plane connection is a blade not covering all of the surface of the plane base formed by said folded lateral bands.
  • a subject of the present invention is also an electrochemical generator comprising an electric coupling system as described previously.
  • the electrochemical generator according to the invention can comprise electrode plates or spirally wound electrodes.
  • This generator can also be a lithium generator, in particular a rechargeable generator, for example of the “lithium-ion” type, or a supercapacitor.
  • the electrochemical generator in the case where the electrochemical generator is of the lithium-ion type, it comprises a negative electrode in which the active material is a carbonated material capable of inserting lithium into its structure, chosen in particular from graphite, coke, carbon black, and glassy carbon. It also comprises a positive electrode in which the active material is chosen from a transition metal oxide, a sulphide, a sulphate and their mixtures.
  • the electrodes have activated carbon as active material.
  • the plane connection is welded according to at least one weld line perpendicular to the plane of the electrodes.
  • the plane connection is welded according to at least one weld line tangent to the winding axis of the electrodes.
  • a subject of the present invention is also a method of electric coupling of a plane connection to the electrodes of the same polarity of an electrochemical bundle with a view to obtaining the system described previously, comprising the following steps:
  • the plane connection is laser-welded with addition of material to the folded bands.
  • connection is transparency laser-welded onto the folded bands.
  • the folding of the lateral bands is carried out by repeated flattening of said bands by small successive passes of a hammer over the same surface.
  • the surface flattened by one pass is comprised between 20 and 50 mm 2 .
  • a subject of the present invention is also a method for manufacturing an electrochemical generator comprising the system of electric coupling of a plane connection to the electrodes of the same polarity of an electrochemical bundle described previously.
  • An advantage of the present invention is a considerable reduction in the duration of the stage of coupling of the connection.
  • FIG. 1 shows an electrode
  • FIG. 2 represents diagrammatically in section part of the electrochemical bundle
  • FIG. 3 shows a cross-section of a generator during the operation of folding the non-coated lateral bands
  • FIG. 4 shows in cross-section an electrochemical bundle after folding of the non-coated bands
  • FIG. 5 is a top view of the bundle equipped with its connection
  • FIG. 6 diagrammatically represents a cross-section of an electrochemical generator according to the invention.
  • FIG. 1 represents the end of an electrode 1 of total width L on which is distinguished the layer 2 of active material occupying the greater part of the surface of the electrode and a lateral band 3 of height H constituted by the one strip which has not been covered with active material.
  • Electrodes of the type represented in FIG. 1 and carrying respectively positive and negative active materials are assembled in a bundle.
  • Part of an electrochemical bundle, comprising a positive electrode 10 and a negative electrode 11 between which are interposed separators 12 is represented in FIG. 2 .
  • the positive electrode 10 comprises a strip 13 covered with a layer 14 containing the positive active material.
  • a lateral band 15 has been reserved which does not carry any active material.
  • This band 15 protrudes from the bundle and has a height H + comprised between 13 mm and 17 mm.
  • the negative electrode 11 comprises a strip 16 covered by a layer 17 containing the negative active material.
  • At one of the ends of the strip 16 a lateral band 18 has been reserved which does not carry any active material.
  • This band 18 protrudes from the end of the bundle opposite that where the band 15 is situated. It has a height H ⁇ comprised between 8 mm and 12 mm.
  • the separators 12 project slightly from the part of the electrodes coated with active material in order to avoid short-circuits.
  • the electrochemical bundle 30 once constituted is held in a centring tool 31 , as shown in FIG. 3 , and the non-coated protruding lateral bands 32 are curved using a tool 33 , such as for example a hammer with a diameter of 15 to 20 mm.
  • the hammer 33 can be advantageously constituted by a plurality of small hammers, from 5 to 8 mm in diameter, arranged in series.
  • the hammer 33 is moved from top to bottom with a travel of 3 mm, then is moved towards the centre of the bundle in the direction indicated by the arrow 34 after each rotation of the latter.
  • a set of folded strips 35 is obtained at a height H′ of approximately 3 to 4 mm.
  • the abovementioned heights H + and H ⁇ of the lateral bands 15 , 18 are such that the non-folded strips protrude 6 to 7 mm from the ends of the separators 12 .
  • the ends of the separators are still remoted at least 3 mm away from the base of the folded strips 35 .
  • Such a distance between the folded strips and the ends of the separators makes it possible to avoid any risk of burning the separators during the subsequent stage of welding a plane connection to the folded strips.
  • the folding of the non-coated lateral bands 32 of the strips 15 is obtained by repeated flattening of said bands by small successive passes of the hammer 33 over the same surface of approximately 20 to 50 mm 2 , the hammer 33 carrying out a movement from top to bottom until a plane surface is obtained.
  • the lateral bands of the strips of the same polarity are thus folded in a sort of “concertina” in order to form a continuous plane base approximately perpendicular to the initial direction of the strips.
  • FIG. 4 shows the appearance of the bundle of electrodes 30 after this operation in which the folded lateral bands 35 are seen, forming a plane and continuous base.
  • the base 35 thus formed constitutes a metal barrier allowing laser-welding of a plane connection.
  • This base 35 receives a connection 36 which is laser-welded, with addition of material or by transparency, in order to form two parallel beads 37 visible in FIG. 5 .
  • This laser-welding is carried out without piercing the connection plate 36 .
  • material from the base 35 is melted by the laser beam which heats the lateral bands of the folded strips. This molten material spreads over the base 35 in order to constitute the weld.
  • Such a welding method makes it possible to avoid any risk of the weld projecting inside the bundle.
  • the plane connection 36 can be a blade not covering all of the surface of the plane base 35 formed by the lateral bands of the folded strips.
  • the gases released from the electrochemical bundle can be directly evacuated via the ends of the bundle.
  • the continuous plane base formed by the folded strips is not gas-tight.
  • the plane connection 36 can also be pierced with a hole 38 in the axis of the bundle of electrodes 30 in order to allow a good release of gases via this opening.
  • FIG. 6 represents an electrochemical generator 60 , cylindrical in shape, with a hollow axis 61 comprising a container 62 made of aluminium into which a bundle 63 has been introduced, comprising a spirally wound positive electrode and negative electrode.
  • the plane positive connection 64 made of aluminium is welded on the one hand by laser-welding to the non-coated bands 65 of the aluminium strip of the negative electrode, previously folded down in the manner described previously.
  • the positive connection 64 is on the other hand welded to the base 66 of the container 62 by laser-welding or by electric welding, the two types of welding being tight.
  • the plane negative connection 67 made of copper or nickel-coated copper, is welded in the same manner to the non-coated bands 68 of the copper strip of the positive electrode previously folded down in the manner described previously.
  • the negative connection 67 is on the other hand welded to a current output terminal 69 by laser-welding or ultrasound welding.
  • the terminal 69 of negative polarity is fixed to a cover 70 which is welded or crimped onto the container 62 .
  • the terminal 69 is electrically insulated from the cover 70 by an isolating seal 71 .
  • the plane connection is welded according to at least one welding line tangent to the winding axis of the electrodes, as close as possible to this winding axis, in order to cover a maximum of the metal strips.
  • the plane connection is welded according to at least one weld line perpendicular to the plane of the electrodes.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Battery Electrode And Active Subsutance (AREA)
US10/820,788 2003-04-11 2004-04-09 Electric coupling of a connection to an electrochemical bundle Abandoned US20050008933A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/272,146 US8007549B2 (en) 2003-04-11 2008-11-17 Electric coupling of a connection to an electrochemical bundle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0304528 2003-04-11
FR0304528A FR2853764B1 (fr) 2003-04-11 2003-04-11 Raccordement electrique d'une connexion a un faisceau electrochimique

Related Child Applications (1)

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US12/272,146 Division US8007549B2 (en) 2003-04-11 2008-11-17 Electric coupling of a connection to an electrochemical bundle

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US12/272,146 Active 2025-02-13 US8007549B2 (en) 2003-04-11 2008-11-17 Electric coupling of a connection to an electrochemical bundle

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EP (1) EP1596449B1 (fr)
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070026307A1 (en) * 2005-07-29 2007-02-01 Yong-Sam Kim Rechargeable battery
US20070298317A1 (en) * 2006-05-09 2007-12-27 Ralph Brodd Secondary electrochemical cell with increased current collecting efficiency
US20080057394A1 (en) * 2006-09-05 2008-03-06 Saft Groupe Sa Electrical connection device for an output terminal of a storage battery
US20080254354A1 (en) * 2007-04-11 2008-10-16 Saft Connection system for an electrochemical cell
US20090214943A1 (en) * 2008-02-22 2009-08-27 Saft Groupe S.A. Electrical connection for a storage cell
US20090305134A1 (en) * 2006-07-18 2009-12-10 Lg Chem, Ltd. Electrode Assembly Having Stable Lead-Tap Joint and Electrochemical Cell Containing Them
US20100067173A1 (en) * 2005-11-09 2010-03-18 Maxwell Technologies, Inc. Energy storage apparatus and article of manufacture
US8488301B2 (en) 2011-02-28 2013-07-16 Corning Incorporated Ultracapacitor package design having slideably engagable bent tabs
EP2238063A4 (fr) * 2007-12-28 2016-11-09 Encell Technology Llc Système de secours pour ascenseur
US10516150B2 (en) 2015-06-22 2019-12-24 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method for producing an electrochemical bundle for a metal-ion accumulator comprising folding or coiling the foil ends around themselves
GB2575981A (en) * 2018-07-30 2020-02-05 Gp Batteries International Ltd A battery
US11749842B2 (en) 2018-11-05 2023-09-05 Tesla, Inc. Cell with a tabless electrode

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5054419B2 (ja) * 2006-07-06 2012-10-24 エナックス株式会社 シート状二次電池
FR2974451B1 (fr) * 2011-04-20 2014-07-04 Accumulateurs Fixes Connexion electrique pour accumulateur de courant
FR3011128B1 (fr) 2013-09-25 2015-10-30 Commissariat Energie Atomique Procede de realisation d'un faisceau electrochimique d'un accumulateur au lithium
FR3019686B1 (fr) 2014-04-08 2016-05-06 Commissariat Energie Atomique Accumulateur electrochimique au lithium avec borne en liaison directe avec le faisceau electrochimique, procedes de realisation associes.
FR3030118A1 (fr) 2014-12-15 2016-06-17 Saft Groupe Sa Procede de connexion dans un accumulateur et accumulateur ainsi connecte
FR3037725B1 (fr) 2015-06-22 2021-12-31 Commissariat Energie Atomique Procede de realisation d'un faisceau electrochimique d'accumulateur au lithium avec mousse metallique aux extremites de feuillards
FR3052917B1 (fr) 2016-06-15 2022-03-25 Commissariat Energie Atomique Electrode pour faisceau electrochimique d'un accumulateur metal-ion ou d'un supercondensateur, procede de realisation du faisceau et de l'accumulateur associes
FR3057108A1 (fr) * 2016-10-04 2018-04-06 Saft Accumulateur
FR3059159A1 (fr) * 2016-11-23 2018-05-25 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electrode pour faisceau electrochimique d'un accumulateur metal-ion a forte densite d'energie, accumulateur cylindrique ou prismatique associe
DE102017006229B4 (de) 2017-07-03 2024-02-01 Monbat New Power GmbH Verfahren und Vorrichtung zur Herstellung eines Akkumulators und Akkumulator
WO2022177378A1 (fr) 2021-02-19 2022-08-25 주식회사 엘지에너지솔루션 Ensemble d'électrodes et batterie, et bloc-batterie et véhicule comprenant ce dernier

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KR100417560B1 (ko) * 1995-09-27 2004-04-28 소니 가부시끼 가이샤 젤리롤형고용량2차전지
US5972532A (en) * 1998-05-04 1999-10-26 Saft America, Inc. Current collection through the ends of a spirally wound electrochemical cell
JP4866496B2 (ja) * 1999-04-08 2012-02-01 パナソニック株式会社 二次電池の製造方法

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US3761314A (en) * 1970-06-23 1973-09-25 Accumulateurs Fixes High discharge rate electric cells and batteries

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070026307A1 (en) * 2005-07-29 2007-02-01 Yong-Sam Kim Rechargeable battery
US8318336B2 (en) * 2005-07-29 2012-11-27 Samsung Sdi Co., Ltd. Rechargeable battery
US20100067173A1 (en) * 2005-11-09 2010-03-18 Maxwell Technologies, Inc. Energy storage apparatus and article of manufacture
US20070298317A1 (en) * 2006-05-09 2007-12-27 Ralph Brodd Secondary electrochemical cell with increased current collecting efficiency
US8673476B2 (en) * 2006-07-18 2014-03-18 Lg Chem, Ltd. Electrode assembly having stable lead-tap joint and electrochemical cell containing them
US20090305134A1 (en) * 2006-07-18 2009-12-10 Lg Chem, Ltd. Electrode Assembly Having Stable Lead-Tap Joint and Electrochemical Cell Containing Them
US20080057394A1 (en) * 2006-09-05 2008-03-06 Saft Groupe Sa Electrical connection device for an output terminal of a storage battery
US8021780B2 (en) * 2006-09-05 2011-09-20 Saft Electrical connection device for an output terminal of a storage battery
US8338024B2 (en) 2006-09-05 2012-12-25 Saft Electrical connection device for an output terminal of a storage battery
US20080254354A1 (en) * 2007-04-11 2008-10-16 Saft Connection system for an electrochemical cell
EP1983595A1 (fr) 2007-04-11 2008-10-22 Saft Groupe Sa Système de connexion pour cellule électrochimique
EP2238063A4 (fr) * 2007-12-28 2016-11-09 Encell Technology Llc Système de secours pour ascenseur
US20090214943A1 (en) * 2008-02-22 2009-08-27 Saft Groupe S.A. Electrical connection for a storage cell
US8043746B2 (en) * 2008-02-22 2011-10-25 Saft Electrical connection for a storage cell
US8488301B2 (en) 2011-02-28 2013-07-16 Corning Incorporated Ultracapacitor package design having slideably engagable bent tabs
US10516150B2 (en) 2015-06-22 2019-12-24 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method for producing an electrochemical bundle for a metal-ion accumulator comprising folding or coiling the foil ends around themselves
GB2575981A (en) * 2018-07-30 2020-02-05 Gp Batteries International Ltd A battery
GB2575981B (en) * 2018-07-30 2022-09-07 Gp Batteries International Ltd A battery
US11482762B2 (en) 2018-07-30 2022-10-25 Gp Batteries International Limited Battery
US11749842B2 (en) 2018-11-05 2023-09-05 Tesla, Inc. Cell with a tabless electrode

Also Published As

Publication number Publication date
EP1596449B1 (fr) 2019-05-15
EP1596449A2 (fr) 2005-11-16
US8007549B2 (en) 2011-08-30
FR2853764B1 (fr) 2009-06-05
EP1596449A3 (fr) 2007-04-11
US20090139082A1 (en) 2009-06-04
FR2853764A1 (fr) 2004-10-15

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