WO2019063082A1 - Agencement d'électrodes pour une cellule de batterie - Google Patents

Agencement d'électrodes pour une cellule de batterie Download PDF

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Publication number
WO2019063082A1
WO2019063082A1 PCT/EP2017/074654 EP2017074654W WO2019063082A1 WO 2019063082 A1 WO2019063082 A1 WO 2019063082A1 EP 2017074654 W EP2017074654 W EP 2017074654W WO 2019063082 A1 WO2019063082 A1 WO 2019063082A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
battery cell
contact
active material
electrodes
Prior art date
Application number
PCT/EP2017/074654
Other languages
German (de)
English (en)
Inventor
Moses Ender
Original Assignee
Hilti Aktiengesellschaft
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 Hilti Aktiengesellschaft filed Critical Hilti Aktiengesellschaft
Priority to PCT/EP2017/074654 priority Critical patent/WO2019063082A1/fr
Publication of WO2019063082A1 publication Critical patent/WO2019063082A1/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • 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 an electrode arrangement for a battery cell, in particular a battery cell for a power tool.
  • Power tools load a battery pack with very high current pulses, both with short pulses of very high currents and longer pulses of high currents.
  • the pulses can be repeated quickly even with short breaks.
  • the battery pack should heat up only slightly in order to achieve a sufficient life of the battery pack. The service life is particularly evident in a rapid drop in capacity after less than a hundred charge and discharge cycles.
  • the battery cell according to the invention has an electrode package, which is composed of pairs of electrodes, which in turn have a negative electrode (anode) and a positive electrode (cathode).
  • the anodes have a strip-shaped carrier, a first active material on the surface of the strip-shaped carrier and at least one anode contact lug.
  • the cathodes have a strip-shaped carrier, a second active material on the surface of the strip-shaped carrier, at least one cathode contact lug.
  • the electrode pairs have one of the anodes and one of the cathodes.
  • the cathode is disposed opposite the anode such that the anode contact tab does not face a second active material of the cathode.
  • the cathode has, for example, a region which is recessed from the second active material or is correspondingly shorter if the anode contact lugs are arranged on the narrow edge.
  • the electrode packet has at least two of the pairs of electrodes arranged one above the other.
  • the electrode package is wound.
  • the battery cell is filled with a liquid or gel electrolyte.
  • the electrode package is enclosed in a housing.
  • a first electrical cell contact is electrically connected to the anode tabs and a second electrical cell contact is electrically connected to the cathode tabs.
  • the battery cell has lower internal resistive losses due to the use of multiple parallel connected anodes and cathodes.
  • the higher number of contact lugs shortens the line lengths within the battery cell.
  • the use of identical anodes and cathodes within the battery cell facilitates manufacturing compared to electrode assemblies having a higher number of tabs on a single electrode.
  • the anodes and cathodes of a pair of electrodes are preferably approximately the same length.
  • the cathode is preferably as long as the first active material coated surface.
  • the cathode may be shorter than the anode by the width of the anode tabs.
  • the anode contact lugs are arranged offset to the cathode contact lugs along a longitudinal edge of the carrier.
  • the anodes and cathodes are wound up.
  • the viewing along the longitudinal edge is corresponding along the winding path.
  • both the anode and the cathode are coated with their active material between the anode tabs and the cathode tabs.
  • An embodiment provides that the anodes each have an anode contact lug at both longitudinal ends and the cathodes each have a cathode contact lug in the middle of the cathode.
  • the electrode package has two or more pairs of electrodes, for example exactly two pairs of electrodes.
  • An embodiment provides that one of the narrow edges of the electrode package is within the wound electrode package and the other of the narrow edges of the electrode package is outside the wound electrode package.
  • the electrode package is wound from one end and not from the middle.
  • the second active material consists of a lithium-based metal oxide compounds.
  • the electrolyte may have lithium salts dissolved in aprotic solvent.
  • Battery pack for a power tool having at least three series-connected battery cells and a monitoring unit for monitoring the state of charge of the individual battery cells.
  • Fig. 1 is a battery cell
  • Fig. 2 is a rolled-up electrode package
  • Fig. 3 is a wound electrode package
  • Fig. 4 is an anode
  • Fig. 5 is a cathode
  • Fig. 6 is a cathode
  • Fig. 7 is a battery-powered hand tool
  • Fig. 1 shows schematically the structure of a battery cell 1.
  • the battery cell 1 has a closed cylindrical housing 2.
  • a diameter of the battery cell 1 is in the range between 12 mm and 27 mm.
  • the height of the battery cell 1 is preferably in the range between 65 mm and 70 mm.
  • a particularly preferred cell has a diameter between 21 mm and 23 mm and a height between 65 mm and 70 mm.
  • the battery cell 1 has an electrical (cell) contact 3 of an electrical polarity at one end face of the cylindrical housing 2 and an electrical (cell) contact 4 of the other electrical polarity on the other end face of the cylindrical housing 2.
  • the electrical contacts 4 may be formed by planar surfaces, welded-on flags or as an example of the one contact 3 shown as a raised structure.
  • the battery cell 1 has a tightly wound electrode package 5 within the housing 2.
  • the electrode package 5 is impregnated with the liquid or gel electrolyte.
  • the Electrodes and the electrolyte form the galvanic cell, which can reversibly store electrical energy and deliver electrical energy.
  • the battery cell 1 is filled with a liquid or gel electrolyte.
  • the electrolyte may contain lithium salts dissolved in an aprotic solvent.
  • a suitable salt is, for example, lithium hexafluorophosphate.
  • Suitable solvents are, for example, ethylene carbonate, propylene carbonate and dimethyl carbonate.
  • the electrode package 5 includes two pairs of electrodes 6. Each electrode pair 6 has a flat negative electrode 7 (anode during discharge) and a flat positive electrode 8 (cathode during discharge).
  • the pairs of electrodes 6 are preferably identical in configuration, e.g. in their compositions and their dimensions. The description is therefore limited to a single pair of electrodes 6.
  • the anode 7 has an electrically conductive carrier 9.
  • the carrier 9 is made of copper.
  • the carrier 9 is a long, thin film.
  • An exemplary length 10 of the carrier 9 is in the range between 25 cm and 200 cm, a height 11 of the carrier 9 corresponds approximately to the height of the battery cell 1, a thickness of the carrier 9 is preferably less than 50 ⁇ , e.g. less than 20 ⁇ .
  • a surface of the carrier 9 therefore consists essentially only of the two opposite largest side surfaces 12, which is bounded by the narrow edges 13 and the longitudinal edges 14.
  • the two side surfaces 12 of the carrier 9 are coated with an active material.
  • the active material covers almost the entire surface of the carrier 9.
  • the active material of the anode 7 may be graphite, for example.
  • the anode 7 is provided with one or more (anode) contact lugs 15.
  • the anode tabs 15 are narrow strips of metal, such as nickel, which are in, preferably direct, electrical contact with the carrier 9.
  • the anode contact lugs 15 can be attached to the carrier 9, for example, by ultrasonic welding and be contacted with this electrically.
  • the anode 7 is electrically connected via the anode contact lugs 15 to the contact 4 of the battery cell 1.
  • the anode contact lugs 15 are oriented, for example, parallel to the narrow edges 13 of the carrier 9 and project along the height 11 beyond the carrier 9.
  • the exemplary anode 7 has exactly two anode contact lugs 15, which are arranged on the narrow edges 13 of the carrier 9.
  • the anode contact lugs 15 are thus located on the outer extremities along the longitudinal edge 14 of the carrier 9.
  • the side surfaces 12 between the anode contact lugs 15th are completely coated with the active material.
  • Only the regions 16 directly on the anode contact lugs 15 are uncoated, ie free of the active material, in order to prevent direct contact between the active material and the contact lugs.
  • the uncoated regions 16 may be slightly wider than the anode contact lugs 15.
  • the anode tabs 15 only cover part of the uncoated area 16.
  • the structure of the cathode 8 is similar to the structure of the anode 7.
  • the cathode 8 has an electrically conductive carrier 17.
  • the carrier 17 is made of aluminum.
  • the carrier 17 of the cathode 8 is also a long, thin film.
  • the geometric dimensions of the two carriers 9, 17 are approximately identical, in particular the length 10 and the height 11.
  • the cathode 8 may also be somewhat less long, for example less than 10% shorter than the anode 7.
  • a surface of the carrier 17 consists essentially only of the two opposite largest side surfaces 18.
  • the two side surfaces 18 of the carrier 17 are coated with an active material.
  • the active material covers almost the entire surface of the carrier 17.
  • the active material of the cathode 8 is made of lithium-based metal oxide compounds, e.g. Lithium manganese oxide, lithium nickel manganese oxide, lithium nickel oxide, lithium nickel cobalt aluminum oxide, lithium iron phosphate. Particularly preferred are lithium metal oxide compounds which form a spinel structure.
  • the cathode 8 is provided with (cathode) contact lugs 19.
  • the tabs 19 are narrow strips of metal, e.g. Aluminum, which are in, preferably immediate, electrical contact with the carrier 17.
  • the cathode 8 is electrically connected to the contact 3 of the battery cell 1 via the cathode contact lugs 19.
  • the cathode tabs 19 are oriented, for example, parallel to the narrow edges 20 of the carrier 17 and stand along the height 11 on the carrier 17 also.
  • the exemplary cathode 8 has exactly one cathode contact lug 19, which is arranged along the longitudinal direction 21 of the carrier 17 in the middle of the carrier 17.
  • the carrier 9 is uncoated in the region 22 of the cathode contact lug 19, i. free from the active material.
  • the uncoated region 22 may preferably be slightly wider than the cathode contact lug 19.
  • the cathode 8 exemplified in Fig. 5 has two areas 23 recessed from the active material. In the recessed areas 23, the side surfaces 18 are not covered with the active material. The recessed areas 23 are also not provided with a contact, but simply an inactive area with the bare carrier 17. Der The recessed area 23 of the cathode 8 preferably has the same dimensions as one of the uncoated areas 16 around the anode contact tabs 15. The arrangement of the recessed area 22 of the cathode 8 along the longitudinal direction 21 and the winding direction 88 coincides with the arrangement of the uncoated area 16 of FIG Anode 7 together.
  • the two recessed areas are at the beginning and at the end of the carrier 17.
  • the anode 7 and the cathode 8 can thus be stacked so that the anode tabs 15 face the recessed area.
  • the recessed portions are disadvantageous in terms of the capacity of the battery cell 1, they significantly increase the life of the battery cell 1.
  • the cathode 8 may be shortened around these recessed portions (FIG. 6).
  • the cathode 8 can therefore be somewhat shorter than the anode 7.
  • the anode 7 and the cathode 8 are advantageously held by a separator 24 at a distance.
  • the separator 24 is, for example, a porous foil of an electrically insulating material.
  • the pores are dimensioned sufficiently large for an unobstructed ion current of the electrolyte.
  • the dimension of the separator 24 largely corresponds to the dimensions of the carrier 9.
  • a second separator 24 is required, since the side faces 12, 18, which are still remote from each other, lie opposite each other in the wound-up electrode packet 5.
  • the electrode pair 6 is formed from the anode 7, the cathode 8 and advantageously the separators 24.
  • the two or three planar elements are substantially centered and stacked with each other.
  • One of the side surfaces 12 of the anode 7 is opposite to one of the side surfaces 18 of the cathode 8.
  • the narrow edges 13 of the anode 7 and the narrow edges 20 of the cathode 8 are adjacent to each other or are at a small distance.
  • the arrangement provides maximum overlap of the active materials.
  • the entire active material of the cathode 8 is opposed to active material of the anode 7.
  • the regions of the side surface 12 of the anode 7 coated with the first active material completely cover the regions of the side surface 18 of the cathode 8 coated with the second active material.
  • the anode contact lugs 15 face the recessed regions of the cathode 8 or protrude above the cathode 8 out.
  • the anode contact lugs 15 and the cathode contact lugs 19 are preferably over at the opposite longitudinal edges of the electrode pair 6.
  • the electrode package 5 is formed from at least two of the electrode pairs 6.
  • the two electrode pairs 6 are centered on each other centered.
  • the longitudinal edges 14, 25 and the narrow edges 13, 20 of the anodes 7 and cathodes 8 aligned with each other over each other.
  • the front anode contact lugs 15 and the front recessed areas 23 of the two electrode pairs 6 are superimposed; the rear anode contact lugs 15 and the rear recessed portions 23 of the two electrode pairs 6 are superimposed; the cathode contact lugs 19 of the two electrode pairs 6 are superimposed.
  • the wound-up electrode package 5 the superposed elements of the three groups are each in close proximity.
  • the electrode package 5 is wound.
  • the winding direction 88 corresponds to the longitudinal edge 14 or longitudinal direction 21 bz of the electrodes 7, 8.
  • the electrode package 5 is wound from a narrow edge 13, 20 starting.
  • the wound electrode package 5 has a narrow edge 13, 20 in the center and a narrow edge 13, 20 on the circumference.
  • the anode contact lugs 15 of the different electrode pairs 6 are connected to the cell contact 4.
  • the cathode tabs 19 are connected to the other cell contact 3.
  • the lithium-ion battery cell 1 allows the delivery of very high currents over a longer period of time. The currents are for example over 40 amperes for a duration of at least one minute.
  • a battery pack 26 may be made up of a plurality of these battery cells 1.
  • the battery pack 26 additionally includes a monitoring unit 27, which protects the battery cells 1 against over-discharge or over-charging.
  • the battery pack 26 is particularly suitable for electric screwdrivers 28 and other electrical appliances, such as angle grinder or circular saws due to the battery cells 1.
  • the power tools have an electric motor 29 which is powered by the battery pack 26 with power.
  • the electric motor 29 is arranged in a machine housing 30, which can be held and guided by a handle 31 in operation.
  • a handle 31 in operation.
  • an operating switch 32 at or near the handle 31 is an operating switch 32, via which the electric motor 29 can be switched on.
  • the user can operate the operating switch 32, preferably with the hand gripping the hand 31.
  • the power tool has a tool holder 33 on which a tool, e.g. a screwdriver bit, a drill, a grinding wheel, a cutting disc, a saw blade, etc. can be attached.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

Une cellule de batterie (1) a un paquet d'électrodes (5) qui est composé de paires d'électrodes (6) qui, à leur tour, comprennent une électrode négative (7) et une électrode positive (8). Les électrodes négatives (7) ont un support en forme de ruban (9), un premier matériau actif sur la surface (12) du support en forme de ruban (9) et au moins un premier talon de contact (15). Les électrodes positives (8) ont un support en forme de ruban (9), un second matériau actif sur la surface (18) du support en forme de ruban (9), au moins un second talon de contact (19). Les paires d'électrodes (6) sont composées d'une des électrodes négatives (7) et d'une des électrodes positives (8). Le paquet d'électrodes (5) comprend au moins deux des paires d'électrodes (6) disposées les unes sur les autres. Le paquet d'électrodes (5) est enroulé. Le paquet d'électrodes (5) est immergé dans un électrolyte. Le paquet d'électrodes (5) immergé est enchâssé dans un boîtier (2). Un premier contact d'élément électrique (4) est relié électriquement au premier talon de contact (15) et un second contact d'élément électrique (3) est relié électriquement au second talon de contact (19) d'électrode.
PCT/EP2017/074654 2017-09-28 2017-09-28 Agencement d'électrodes pour une cellule de batterie WO2019063082A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/074654 WO2019063082A1 (fr) 2017-09-28 2017-09-28 Agencement d'électrodes pour une cellule de batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/074654 WO2019063082A1 (fr) 2017-09-28 2017-09-28 Agencement d'électrodes pour une cellule de batterie

Publications (1)

Publication Number Publication Date
WO2019063082A1 true WO2019063082A1 (fr) 2019-04-04

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059213A1 (fr) * 1998-05-08 1999-11-18 Eveready Battery Company, Inc. Mecanisme de commande de destruction pour piles electrochimiques
US20050130035A1 (en) * 2002-07-25 2005-06-16 Shusuke Inada Nonaqueous electrolyte secondary battery
DE102009022678A1 (de) * 2009-05-26 2010-12-02 Li-Tec Battery Gmbh Elektrodenwickel
US20120196165A1 (en) * 2011-01-31 2012-08-02 Samsung Sdi Co., Ltd. Electrode assembly and secondary battery including electrode assembly
EP2487738A1 (fr) * 2011-02-11 2012-08-15 Samsung SDI Co., Ltd. Ensemble formant électrode et batterie secondaire l'utilisant
EP3236513A1 (fr) * 2016-04-22 2017-10-25 HILTI Aktiengesellschaft Dispositif d'electrode pour un element de batterie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059213A1 (fr) * 1998-05-08 1999-11-18 Eveready Battery Company, Inc. Mecanisme de commande de destruction pour piles electrochimiques
US20050130035A1 (en) * 2002-07-25 2005-06-16 Shusuke Inada Nonaqueous electrolyte secondary battery
DE102009022678A1 (de) * 2009-05-26 2010-12-02 Li-Tec Battery Gmbh Elektrodenwickel
US20120196165A1 (en) * 2011-01-31 2012-08-02 Samsung Sdi Co., Ltd. Electrode assembly and secondary battery including electrode assembly
EP2487738A1 (fr) * 2011-02-11 2012-08-15 Samsung SDI Co., Ltd. Ensemble formant électrode et batterie secondaire l'utilisant
EP3236513A1 (fr) * 2016-04-22 2017-10-25 HILTI Aktiengesellschaft Dispositif d'electrode pour un element de batterie

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