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WO1997008769A1 - Collecteur de courant a materiau d'electrode dispose sur deux cotes, destine a une batterie stratifiee et procede de fabrication de cette batterie - Google Patents

Collecteur de courant a materiau d'electrode dispose sur deux cotes, destine a une batterie stratifiee et procede de fabrication de cette batterie Download PDF

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Publication number
WO1997008769A1
WO1997008769A1 PCT/US1996/013131 US9613131W WO9708769A1 WO 1997008769 A1 WO1997008769 A1 WO 1997008769A1 US 9613131 W US9613131 W US 9613131W WO 9708769 A1 WO9708769 A1 WO 9708769A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
cuπent
battery
electrode material
collector
Prior art date
Application number
PCT/US1996/013131
Other languages
English (en)
Inventor
S. Scot Cheu
Original Assignee
Valence Technology, Inc.
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 Valence Technology, Inc. filed Critical Valence Technology, Inc.
Priority to AU67731/96A priority Critical patent/AU6773196A/en
Publication of WO1997008769A1 publication Critical patent/WO1997008769A1/fr

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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
    • 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
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into batteries
    • H01M6/46—Grouping of primary cells into batteries of flat cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/14—Cells with non-aqueous electrolyte
    • H01M6/18—Cells with non-aqueous electrolyte with solid electrolyte
    • H01M6/181—Cells with non-aqueous electrolyte with solid electrolyte with polymeric electrolytes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to the construction of batteries and, more particularly, to laminate battery constructions in which a current collector has electrode material on two sides.
  • the basic structure and operation of a conventional battery such as a lead-acid battery may be understood with reference to Figure 1.
  • the main elements of the battery are the anode, the cathode and the electrolyte.
  • the anode on discharge, supplies a flow of electrons, constituting an electric current, to an external device.
  • the current powers the external device and returns to the cathode.
  • the anode and the cathode are separated by the electrolyte.
  • the electrolyte acts as an electrical insulator preventing electrons from moving between the anode and the cathode inside the battery. However, the electrolyte allows the movement of ions, the remainder of the atom or molecule from which the electron has been released.
  • ions are released from the anode, cross through the electrolyte and are stored in the cathode. During the recharge process, ions are transferred through the electrolyte back to the anode.
  • the electrolyte is liquid. Liquid electrolytes effectively allow the movements of ions between the anode and the cathode.
  • the use of liquid electrolytes has several disadvantages. In most batteries, the liquid electrolyte contributes a substantial portion of the battery's overall weight. In addition, most electrolytes are composed of hazardous chemicals, including acid. In the event of a short circuit or other physical damage to the battery, the liquid electrolyte may become free to flow to the reaction site and produce a continuous chemical reaction. This reaction may result in excess heat or a gas discharge, and if not properly released, may be explosive. Although batteries are sealed when manufactured, leaks can occur through misuse or a breakdown of the battery's packaging over time, posing a significant safety risk.
  • Polymer electrolyte batteries represent a new battery technology that differs significantly from conventional battery technology and promises significantly improved performance.
  • a polymer electrolyte battery includes an anode, such as a lithium metal anode, a single-phase, flexible solid polymer electrolyte, and a cathode that stores lithium ions.
  • the polymer electrolyte is a solid.
  • the use of a solid electrolyte makes it possible to substantially reduce the weight and volume of the battery.
  • solid electrolyte lithium batteries have not been available commercially because such batteries have operated effectively only at high temperatures.
  • the present invention generally relates to battery constructions and manufacturing techniques that permit efficient use of electrode material in batteries and that facilitate construction of batteries.
  • a battery cell comprises a sheet-like first electrode current collector having two sides. First electrode material is in electrical contact with both sides of the first electrode current collector. Second electrode material is provided, having an electromotive potential different from that of the first electrode material. Electrolyte material contacts both the first and the second electrode materials and separates the first and the second electrode materials.
  • a battery comprises a plurality of battery cells.
  • the battery cells each include a sheet-like first electrode current collector having two sides, and first electrode material in electrical contact with both sides of the first electrode current collector.
  • the battery cells each further include a sheet-like second electrode current collector having two sides, second electrode material in electrical contact with one side of the second electrode current collector, the second electrode material having an electromotive potential different from that of the first electrode material, and electrolyte material contacting both the first and the second electrode materials and separating the first and the second electrode materials.
  • the battery further comprises a housing enclosing the plurality of battery cells.
  • a method of making a battery comprises the steps of covering at least a portion of both sides of a first electrode current collector with a first electrode material to form a first electrode. Second electrode material is coated on one side of a second electrode current collector to form a second electrode. The second electrode material has an electromotive potential different from that of the first electrode.
  • the first electrode is fixed in position relative to a second electrode and an electrolyte such that the electrolyte is disposed between the first electrode material and the second electrode material to form a battery cell.
  • Figure 1 is a diagrammatic view of a conventional battery
  • Figure 2 is a schematic, cross-sectional view of a battery cell according to an embodiment of the present invention.
  • Figure 3 is a schematic, cross-sectional view of a battery composed of multiple battery cells and enclosed in a housing according to an embodiment of the present invention
  • Figure 4 is a schematic, cross-sectional view of a battery composed of multiple battery cells and enclosed in a housing according to an embodiment of the present invention
  • Figure 5 is a schematic, cross sectional view of a battery composed of multiple battery cells and enclosed in a housing according to an embodiment of the present invention.
  • a battery cell 10 includes a first electrode laminate 41 having a first electrode cu ⁇ ent collector layer 43 having a first portion 45, to which is applied a top and a bottom layer 49, 51 of first electrode material, and a second, extended portion 47.
  • the first electrode laminate 41 is refe ⁇ ed to herein as the anode laminate
  • the first electrode cu ⁇ ent collector layer 43 is refe ⁇ ed to herein as the anode cu ⁇ ent collector layer
  • the top and bottom layers 49, 51 of first electrode material are refe ⁇ ed to as the top and bottom anode layers.
  • the anode cu ⁇ ent collector layer 43 is sheet-like and is preferably formed from a continuous cu ⁇ ent conducting web material, such as a nickel or copper web or sheet.
  • the top and bottom anode layers 49, 51 preferably include anode material that is applied to the first portion 45 of the anode cu ⁇ ent collector 43 by chemical vapor deposition or some other suitable deposition process such that the top and bottom anode layers are in electrical contact with the anode cu ⁇ ent collector.
  • the top and bottom anode layers 49, 51 can include sheets of anodic foil applied to the anode cu ⁇ ent collector 43 such that the top and bottom anode layers are in electrical contact with the anode cu ⁇ ent collector, or the anode laminate 41 can be formed from a sheet of anodic foil. Lithium is a particularly prefe ⁇ ed anodic material because of its position in the electromotive series.
  • the battery cell 10 further includes a second electrode laminate sheet 21 having a second cu ⁇ ent collector layer 23, a layer 25 of second electrode material laminated on the second cu ⁇ ent collector layer, and an electrolyte layer 27 laminated on the second electrode layer.
  • the layer 25 of second electrode material is of an electromotive potential different from that of the first electrode material.
  • the second cu ⁇ ent collector layer 23, the layer 25 of second electrode material, and the electrolyte layer 27 are laminated together such that the second cu ⁇ ent collector layer is in electrical contact with the layer of second electrode material, and the layer of second electrode material is in electrical contact with the electrolyte layer.
  • the second electrode laminate sheet 21 is refe ⁇ ed to herein as the cathode laminate
  • the second cu ⁇ ent collector layer 23 is refe ⁇ ed to herein as the cathode cu ⁇ ent collector layer
  • the layer 25 of second electrode material is refe ⁇ ed to herein as the cathode layer.
  • the cathode cu ⁇ ent collector layer 23 is provided to inject electrons into the cathode layer 25 which, by itself, is generally a relatively poor conductor.
  • the cathode cu ⁇ ent collector layer 23 also facilitates forming an electrical connection with the cathode laminate 21 in that an electrical connection can be made directly with the cathode cu ⁇ ent collector layer.
  • the cathode cu ⁇ ent collector layer 23 is sheet-like and is preferably formed from a continuous cu ⁇ ent conducting web material, such as a nickel web or sheet.
  • the cathode layer 25 is coated or covered onto the cathode cu ⁇ ent collector layer 23 and is selected from the group of materials suited for storing ions released from an anode.
  • the cathode layer 25 is preferably a composite material including a vanadium oxide, V 6 O ⁇ 3 or V 3 O 8 , material.
  • the electrolyte layer 27 is a polymer electrolyte material that is coated or covered onto the cathode layer 25.
  • the cathode layer 25 and the electrolyte layer 27 can be cured in an electron beam curing apparatus (not shown).
  • the cathode laminate 21 is folded evenly around the anode laminate 41 such that the layer of electrolyte material 27 on the cathode laminate 21 contacts the top and bottom anode layers 49, 51, thereby forming the battery cell 10.
  • the cathode laminate 21 is of sufficient size such that, when the cathode laminate is folded around the anode laminate 41, the top and bottom layers 49, 51 of anode material are completely covered by the cathode laminate.
  • all of the extended portion 47 of the anode cu ⁇ ent collector layer 43 extends outwardly from between the folded cathode laminate 21; however, the cathode laminate can extend over a portion of the extended portion of the anode cu ⁇ ent collector layer.
  • each discrete cathode cu ⁇ ent collector 23, 23', 23" of each discrete cathode laminate 21, 21', 21" are formed to facilitate forming an electrical connection between the cathode cu ⁇ ent collectors and an external point.
  • the extended portions 29, 29', 29" of each cathode cu ⁇ ent collector 23, 23', 23" extend outwardly from the battery pack 1.
  • the discrete cathode cu ⁇ ent collectors 23, 23', 23" of the cathode laminates 21, 21', 21" su ⁇ ounding each anode laminate 41, 41', 41" are electrically connected to one another by an electrical connector 54, such as a conductive strip or wire, contacting the extended portions 29, 29', 29" of each of the discrete cathode cu ⁇ ent collectors, thereby electrically connecting discrete cathode layers 25, 25', 25" to one another.
  • an electrical connector 54 such as a conductive strip or wire
  • a plurality of battery cells 10, 10', 10" are stacked on top of one another to form a battery pack 1 such that a portion of the cathode cu ⁇ ent collector layer 23 of the cathode laminate 21 of each cell contacts, and is thereby electrically connected to, a portion of the cathode cu ⁇ ent collector layer of every other cell.
  • a plurality of cathode layers 25 are electrically connected to one another.
  • the plurality of battery cells 10, 10', 10" are preferably stacked such that each of the extended portions 47, 47', 47" of each of the anode cu ⁇ ent collectors 43, 43', 43" of each of the anode laminates 41, 41', 41" of each cell extend in the same direction. Aligning all the battery cells in the same direction facilitates electrically connecting all of the discrete anode laminates 41, 41', 41" to one another by an electrical connector 53.
  • the plurality of battery cells 10, 10', 10" can be arranged in alternatingly opposite directions (not shown).
  • the electrical connector 53 is preferably a conductive strip, such as a piece of copper wire or sheet, which is electrically connected to each of the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43", such as by welding, soldering or by being fused to the extended portions by a chemical reaction. In this manner, all of the top and bottom anode layers 49, 49', 49", 51, 51', 51" are electrically connected to one another.
  • the cathode laminates 21, 21', 21" of the plurality of battery cells 10, 10', 10" are electrically connected to one another by contact of the conductive cathode cu ⁇ ent collectors 23, 23', 23" with one another.
  • the cathode laminates 21, 21', 21" are electrically connected to an outside load or power source by the electrical connector 54 contacting an exposed portion of one of the cathode cu ⁇ ent collectors 23, 23', 23". As noted above, in the battery pack 1 shown in Figure 3, the electrical connector 54 is connected to all of the discrete cathode cu ⁇ ent collectors 23, 23', 23".
  • the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43" of the cells extend parallel to one another, thereby forming a finned heat sink structure.
  • Air flow across the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43" permits heat from the reactive core of the battery, the lithium anode layer 49, 51, to be rapidly dissipated. Air flow can be provided by natural or forced convection. Heat conduction from the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43" allows the top and bottom lithium layers 49, 51 to be maintained at a low, stable operating temperature.
  • One or more battery cells 10 can be enclosed in a housing 60, as shown in Figures 3-5, which can be rigid or flexible.
  • the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43" extend through a wall 61 of the housing, thereby facilitating forming electrical connections with the anode laminates 41, 41', 41" as well as facilitating blowing cooling air over the extended portions to maintain the battery cells 10, 10', 10" at a proper operating temperature.
  • a prefe ⁇ ed flexible housing 60 includes a shrink wrap material wrapped around the battery pack 1.
  • Edges 62 of the shrink wrap material where the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43" extend through the wall 61 of the housing 60 are sealed, preferably with a hot melt adhesive 63. Sealing the battery pack 1 in the foregoing manner helps to prevent damage to the battery cells 10 that might occur due to exposure to the elements; particularly exposure to water, which is highly reactive with many anode materials such as lithium.
  • the battery pack 1 can be enclosed in a housing 60 such that the extended portions 47, 47', 47" of the anode cu ⁇ ent collectors 43, 43', 43" are enclosed within the housing.
  • the extended portions 29, 29', 29" of the cathode cu ⁇ ent collectors 23, 23', 23" are enclosed within the housing 60.
  • a portion of the electrical connector 53 extends outside of the housing 60 so that the anode laminates 41, 41', 41" of the battery cells 10, 10', 10" can be connected to a load or a power source (not shown).
  • a portion of the electrical connector 54 also extends outside of the housing 60 so that the cathode laminates 21, 21', 21" of the battery cells 10, 10', 10" can be connected to the load or the power source.
  • the electrical connector 54 is connected to each of the extended portions 29, 29', 29" of the cathode cu ⁇ ent collectors 23, 23', 23" and a portion of the electrical connector 54 extends through the wall 61 of the housing, thereby facilitating forming electrical connections with the cathode laminates 21, 21', 21", as well as facilitating blowing cooling air over the extend portions to maintain the battery cells 10, 10', 10" at a proper operating temperature.
  • edges 62 of the shrink wrap material where the electrical connectors 53, 54 extend through the wall 61 of the housing 60 are sealed with hot melt adhesive 63.
  • the housing 60 is preferably selected such that open spaces are provided near the extended portions 47, 47', 47" of the battery cells 10, 10', 10" to permit internal ventilation of the battery cells.
  • the above-described battery cell 10 provides significant advantages. For example, by depositing lithium on the cu ⁇ ent collector 43, the thickness of the anode laminate 41, and of the top and bottom anode layers 49, 51 is able to be carefully controlled. In a typical application, lithium anode layers 49, 51 of 5 to 15 microns in thickness are sufficient, depending on the capacity of the cell. Lithium foils, on the other hand, are not presently known to be commercially available in thicknesses less than about 75 microns. Using a lithium foil anode 75 microns thick in an application where a layer of lithium of only 5 to 15 microns thick would normally suffice results in a several-fold excess of lithium.
  • the concentration of lithium in the battery can be reduced, reducing expense, enhancing safety, and not least of all, reducing the volume of the battery cell 10. Furthermore, the cu ⁇ ent collector 43 effectively partitions the battery cell 10, dividing the top and bottom anode layers 49, 51 into separate portions and forming a sort of reaction barrier between those separate portions. A potential problem in one part of the battery cell 10 is, therefore, less likely to affect other parts of the battery cell.
  • the above-described battery provides a means for efficiently removing sufficient heat from a battery cell 10 or a battery pack 1 to reduce risks due to explosions. This is done, as described above, by providing a heat sink in the form of thin metal foil cu ⁇ ent collector 43 that has been coated or covered, on a first portion 45, with lithium or other active metal.
  • a second portion 47 of the cu ⁇ ent collector 43 acts as a heat sink and radiator to maintain a low temperature in the interior of a battery cell 10.
  • the second portion 47 of the metal foil cu ⁇ ent collector 43 also provides a convenient method for removing cu ⁇ ent from the battery cell 10 at high rates.
  • first electrode material is coated or covered on the first portion 45 of both sides of the first electrode cu ⁇ ent collector 43 to form a top and bottom layers 49, 51 of the first electrode laminate 41.
  • Second electrode material is coated covered on at least one side of a second electrode cu ⁇ ent collector 23 to form a layer 25 of a second electrode laminate 21.
  • the second electrode material has an electromotive potential different from that of the first electrode material.
  • the first electrode laminate 41 is fixed in position relative to the second electrode laminate 21 and the electrolyte 27 such that the electrolyte is disposed between the first electrode material and the second electrode material to form the battery cell 10.
  • a plurality of battery cells 10, 10', 10" are preferably stacked on top of one another, and the first electrode cu ⁇ ent collectors 43, 43', 43" of the plurality of battery cells are electrically connected to one another.
  • the second electrode cu ⁇ ent collectors 23, 23', 23" of the plurality of battery cells 10, 10', 10" are also electrically connected to one another.
  • the stacked plurality of battery cells 10, 10', 10" are enclosed in a housing 60.
  • a portion of the electrical connector 53 for electrically connecting the first electrode cu ⁇ ent collectors 43, 43', 43" is extended outside of the housing 60 through the wall 61 of the housing.
  • a portion of an electrical connector 54 for electrically connecting the second electrode cu ⁇ ent collectors 23, 23', 23" is extended outside of the housing 60 through the wall 61 of the housing.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Dans un élément de batterie stratifiée, un collecteur de courant de type à feuille présente un matériau d'électrode en contact électrique avec ses deux côtés. Un matériau d'électrolyte solide, en contact avec le matériau d'électrode, sépare ce dernier d'un autre matériau d'électrode à potentiel électromoteur différent. Le collecteur de courant comprend une partie en prolongement destinée à faciliter l'établissement de ses connexions électriques avec le matériau d'électrode et le refroidissement de l'élément de batterie.
PCT/US1996/013131 1995-08-25 1996-08-13 Collecteur de courant a materiau d'electrode dispose sur deux cotes, destine a une batterie stratifiee et procede de fabrication de cette batterie WO1997008769A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67731/96A AU6773196A (en) 1995-08-25 1996-08-13 Current collector having electrode material on two sides for use in a laminate battery and method of making a battery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51947395A 1995-08-25 1995-08-25
US08/519,473 1995-08-25

Publications (1)

Publication Number Publication Date
WO1997008769A1 true WO1997008769A1 (fr) 1997-03-06

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PCT/US1996/013131 WO1997008769A1 (fr) 1995-08-25 1996-08-13 Collecteur de courant a materiau d'electrode dispose sur deux cotes, destine a une batterie stratifiee et procede de fabrication de cette batterie

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AU (1) AU6773196A (fr)
WO (1) WO1997008769A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031400A1 (fr) * 1996-02-22 1997-08-28 Valence Technology, Inc. Procede et dispositif de realisation de cellules electrochimiques
WO1999060651A1 (fr) * 1998-05-15 1999-11-25 Valence Technology, Inc. Mise en place de la grille dans les contre-electrodes des cellules bipolaires a ions lithium
US6063519A (en) * 1998-05-15 2000-05-16 Valence Technology, Inc. Grid placement in lithium ion bi-cell counter electrodes
EP1014466A1 (fr) * 1998-12-25 2000-06-28 Matsushita Electric Industrial Co., Ltd. Batterie solide à électrolyte polymère et procédé de fabrication
US6524741B1 (en) 2000-08-24 2003-02-25 Valence Technology, Inc. Battery package with integral disconnect mechanism
EP1825555A4 (fr) * 2004-10-21 2008-08-13 Avestor Ltd Partnership Cellule electrochimique en couche mince pour batteries polymeres au lithium et procede pour la fabriquer
EP2323202A1 (fr) * 2009-11-16 2011-05-18 Samsung SDI Co., Ltd. Ensemble formant électrode
WO2013078027A3 (fr) * 2011-11-22 2013-11-07 Medtronic, Inc. Cellule électrochimique comprenant des cathodes adjacentes
CN104380513A (zh) * 2012-04-27 2015-02-25 日本麦可罗尼克斯股份有限公司 二次电池
US9289611B2 (en) 2011-11-22 2016-03-22 Medtronic, Inc. Electrochemical cell with adjacent cathodes

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EP0298800A1 (fr) * 1987-06-18 1989-01-11 Societe Nationale Elf Aquitaine nrocédé de fabrication d'un ensemble multi-couches utilisable pour la réalisation de l'assemblage de générateurs électrochimiques au lithium en couche mince à électrolyte solide polymère
US4948685A (en) * 1987-09-03 1990-08-14 Ricoh Company, Ltd. Sheet-shaped electrode, method of producing the same, and secondary battery using the sheet-shaped electrode
US4999263A (en) * 1987-04-15 1991-03-12 Ricoh Company, Ltd. Sheet-shaped electrode, method or producing the same, and secondary battery
WO1994010710A1 (fr) * 1992-10-29 1994-05-11 Valence Technology, Inc. Module accumulateur et procede de fabrication d'un accumulateur
US5419982A (en) * 1993-12-06 1995-05-30 Valence Technology, Inc. Corner tab termination for flat-cell batteries
WO1995024740A1 (fr) * 1994-03-08 1995-09-14 Valence Technology, Inc. Interconnexions pour electrodes de pile

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US4999263A (en) * 1987-04-15 1991-03-12 Ricoh Company, Ltd. Sheet-shaped electrode, method or producing the same, and secondary battery
EP0298800A1 (fr) * 1987-06-18 1989-01-11 Societe Nationale Elf Aquitaine nrocédé de fabrication d'un ensemble multi-couches utilisable pour la réalisation de l'assemblage de générateurs électrochimiques au lithium en couche mince à électrolyte solide polymère
US4948685A (en) * 1987-09-03 1990-08-14 Ricoh Company, Ltd. Sheet-shaped electrode, method of producing the same, and secondary battery using the sheet-shaped electrode
WO1994010710A1 (fr) * 1992-10-29 1994-05-11 Valence Technology, Inc. Module accumulateur et procede de fabrication d'un accumulateur
US5419982A (en) * 1993-12-06 1995-05-30 Valence Technology, Inc. Corner tab termination for flat-cell batteries
WO1995024740A1 (fr) * 1994-03-08 1995-09-14 Valence Technology, Inc. Interconnexions pour electrodes de pile

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031400A1 (fr) * 1996-02-22 1997-08-28 Valence Technology, Inc. Procede et dispositif de realisation de cellules electrochimiques
WO1999060651A1 (fr) * 1998-05-15 1999-11-25 Valence Technology, Inc. Mise en place de la grille dans les contre-electrodes des cellules bipolaires a ions lithium
US6063519A (en) * 1998-05-15 2000-05-16 Valence Technology, Inc. Grid placement in lithium ion bi-cell counter electrodes
US6291097B1 (en) 1998-05-15 2001-09-18 Valence Technology, Inc. Grid placement in lithium ion bi-cell counter electrodes
EP1014466A1 (fr) * 1998-12-25 2000-06-28 Matsushita Electric Industrial Co., Ltd. Batterie solide à électrolyte polymère et procédé de fabrication
US6524741B1 (en) 2000-08-24 2003-02-25 Valence Technology, Inc. Battery package with integral disconnect mechanism
US7968224B2 (en) 2004-10-21 2011-06-28 Bathium Canada Inc. Thin film electrochemical cell for lithium polymer batteries and manufacturing method therefor
EP1825555A4 (fr) * 2004-10-21 2008-08-13 Avestor Ltd Partnership Cellule electrochimique en couche mince pour batteries polymeres au lithium et procede pour la fabriquer
US7531012B2 (en) 2004-10-21 2009-05-12 Bathium Canada Inc. Thin film electrochemical cell for lithium polymer batteries and manufacturing method therefor
EP2328222A1 (fr) * 2004-10-21 2011-06-01 Bathium Canada Inc. Cellule électrochimique en couche mince pour batteries polymères au lithium et procédé pour la fabriquer
EP2323202A1 (fr) * 2009-11-16 2011-05-18 Samsung SDI Co., Ltd. Ensemble formant électrode
US9269984B2 (en) 2009-11-16 2016-02-23 Samsung Sdi Co., Ltd. Electrode assembly and rechargeable battery using the same
WO2013078027A3 (fr) * 2011-11-22 2013-11-07 Medtronic, Inc. Cellule électrochimique comprenant des cathodes adjacentes
CN103959515A (zh) * 2011-11-22 2014-07-30 美敦力公司 具有相邻阴极的电化学电池单元
US9289611B2 (en) 2011-11-22 2016-03-22 Medtronic, Inc. Electrochemical cell with adjacent cathodes
US10661089B2 (en) 2011-11-22 2020-05-26 Medtronic, Inc. Electrochemical cell with adjacent cathodes
CN104380513A (zh) * 2012-04-27 2015-02-25 日本麦可罗尼克斯股份有限公司 二次电池
EP2843746A4 (fr) * 2012-04-27 2015-12-30 Nihon Micronics Kk Cellule secondaire
US9748596B2 (en) 2012-04-27 2017-08-29 Kabushiki Kaisha Nihon Micronics Single layer secondary battery having a folded structure

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Publication number Publication date
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