WO2025242520A1 - Élément de liaison pour ensemble couvercle et son procédé de production - Google Patents

Élément de liaison pour ensemble couvercle et son procédé de production

Info

Publication number
WO2025242520A1
WO2025242520A1 PCT/EP2025/063335 EP2025063335W WO2025242520A1 WO 2025242520 A1 WO2025242520 A1 WO 2025242520A1 EP 2025063335 W EP2025063335 W EP 2025063335W WO 2025242520 A1 WO2025242520 A1 WO 2025242520A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting element
electrically conductive
component
section
electrically insulating
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.)
Pending
Application number
PCT/EP2025/063335
Other languages
German (de)
English (en)
Inventor
Dardan Soskic
Julian Fastner
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.)
ElringKlinger AG
Original Assignee
ElringKlinger 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 ElringKlinger AG filed Critical ElringKlinger AG
Publication of WO2025242520A1 publication Critical patent/WO2025242520A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • 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
    • H01M50/147—Lids or covers
    • 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
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/16—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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • 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
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side 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
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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

Definitions

  • the present invention relates to a connecting element for a cover assembly of an electrochemical cell, a cover assembly for an electrochemical cell, and an electrochemical cell. Furthermore, the present invention relates to a method for manufacturing a connecting element for a cover assembly of an electrochemical cell.
  • Electrochemical cells are known from, among others, DE 10201 209270 A1, DE 10 2017200 390 A1, EP 2 541 650 A1, US 2015/0214516 A1 and WO 2021/1140083 A1. Electrochemical cells can be components of electrochemical systems, which comprise several electrochemical cells and serve to absorb, store and/or provide electrical energy.
  • a defined resistance is established between a first cell component, which is connected to a first potential (usually referred to as a positive potential), and a second cell component, which is connected to a second potential (usually referred to as a negative potential).
  • the cell components can be parts of a cover assembly that covers and/or seals the cell casing of an electrochemical cell.
  • the first cell component can be, for example, a cell terminal and the second cell component the cell cover (protective element).
  • the resistance is adjusted via a connecting element located between the cell terminal with positive potential and the cell cover with negative potential, forming an electrically conductive connection between the aforementioned cell components (resistance positive terminal, RPT).
  • the connecting element can perform other functions, such as centering and/or positioning the terminal feedthrough and/or adapting a cavity for potting compounds, which are used, among other things, for...
  • the requirements for attaching cell components to the cell lid are met.
  • the connecting element typically consists of a conductive plastic, in particular a plastic that includes conductive fillers.
  • a significant disadvantage is that conductive plastics are relatively expensive, and their use increases the production costs of the electrochemical cell.
  • the present invention is therefore based on the objective of providing a connecting element and/or a covering arrangement for an electrochemical cell and/or electrochemical cells which realize the setting of a defined resistance between a cell component with a first potential and a further cell component with a second potential in a simple and cost-effective manner.
  • the connecting element can be a connecting element for positioning components of a cover assembly and/or for setting a resistance between a first component of a cover assembly with a first potential and a second component of a cover assembly with a second potential.
  • the connecting element can be used in particular for positioning components of a cover arrangement and/or for setting a resistance between a first component with a first potential and a second component with a second potential of a cover arrangement.
  • the first potential is a positive potential and/or the second potential is a negative potential.
  • a component with positive potential is understood to be a component across which a positive potential is present.
  • a component with negative potential is understood to be a component across which a negative potential is present. Of two potentials, the one with the higher potential is considered the positive potential.
  • the negative potential is the potential that corresponds to the lower standard potential. Conversely, the negative potential is the potential that corresponds to the lower standard potential.
  • the cover arrangement can be a cover arrangement for an electrochemical cell.
  • the electrochemical cell can be a lithium-ion cell.
  • the electrochemical cell can be part of an electrochemical system, which includes at least one electrochemical cell.
  • the electrochemical system can be a lithium-ion battery.
  • the connecting element may in particular include: at least one opening;
  • the opening is bounded by an inner surface of the connecting element; at least one electrically conductive section;
  • At least one electrically conductive section consists of an electrically conductive material composition or is at least partially formed therefrom; and at least one electrically insulating section (110);
  • At least one electrically insulating section consists of an electrically insulating material composition or is at least partially formed from it.
  • the connecting element according to the invention has the advantage that the at least one high-priced conductive material composition is only used to form the at least one electrically conductive section and not for the entire connecting element.
  • the connecting element is preferably a flat material.
  • a flat material is preferably a planar material which, in particular in one dimension, for example its length, or in two dimensions, for example its length and width, has a dimension many times greater than in another dimension, in particular its thickness.
  • Flat material A plane in which the flat material extends with its length and width defines a principal extension plane of the connecting element.
  • thickness preferably refers to the material strength, in particular the average material strength, of the corresponding element (excluding any recesses and/or openings).
  • the thickness of the at least one electrically conductive section and/or the at least one electrically insulating section can be between 0.1 and 3.0 mm, preferably between 0.25 and 1.0 mm.
  • Electrically insulating material compositions preferably have an electrical conductivity of less than 108 S/cm, preferably less than 10 ⁇ 1 S/cm.
  • Electrically conductive material compositions preferably have an electrical conductivity of more than 10′ 6 S/cm, preferably of 10′ 5 to 10′ 5 S/cm, and particularly preferably of 10′ 3 to 10′ 3 S/cm.
  • the connecting element can have a frame-like structure.
  • the inner surface of the frame-like structure corresponds to the inner surface of the connecting element that bounds the at least one opening of the connecting element.
  • the at least one opening is preferably located in the principal plane of extension of the connecting element.
  • a frame-like structure can particularly mean that one or two dimensions of the opening surrounded and/or defined by the frame-like structure, such as a length, a width, and/or a diameter, are larger than a length and/or width of at least one, preferably all, of the strips forming the frame-like structure.
  • the strips can, for example, be transverse or longitudinal profiles of the frame-like structure.
  • the opening of the connecting element can, in principle, take any shape. Preferably, the opening is circular, oval, square, or rectangular.
  • the inner surface of the connecting element is preferably formed by an inner surface of the at least one electrically conductive section and/or by an inner surface of the at least one electrically insulating section.
  • the at least one electrically conductive section at least partially, preferably completely, surrounds the at least one electrically insulating section.
  • An inner surface of the at least one electrically insulating section can form the inner surface of the connecting element, which defines the at least one opening.
  • the outer contour of the at least one electrically conductive section can form the outer contour of the connecting element.
  • the at least one electrically insulating section at least partially, preferably completely, surrounds the at least one electrically conductive section.
  • An inner surface of the at least electrically conductive section can form the inner surface of the connecting element, which defines the at least one opening.
  • the outer contour of the at least one electrically insulating section can form the outer contour of the connecting element.
  • the at least one electrically insulating section and the at least one electrically conductive section have different thicknesses (material thicknesses).
  • this design can result in a cross-sectional profile that is at least approximately L- or T-shaped in a frame-like structure. Such a profile has the advantage that positioning and/or centering of components of a cover assembly can be achieved particularly easily.
  • the section with the greater material thickness preferably the at least one electrically insulating section
  • the section with the lower material thickness, preferably the at least one electrically conductive section has a thickness of 0.1 to 1.0 mm, preferably 0.25 to 0.75 mm.
  • the connecting element can comprise at least one further electrically conductive section.
  • the connecting element comprises two to ten electrically conductive sections, more preferably two, four, or six electrically conductive sections.
  • a connecting element with several electrically conductive sections has the advantage that it can be used for different cover arrangements and/or redundancies can be created in the form of multiple electrically conductive connection points between components with the first, preferably positive, potential and components with the second, preferably negative, potential in a cover arrangement.
  • the electrically conductive sections in the connecting element are arranged spaced apart from each other.
  • the electrically conductive sections are enclosed by the at least one electrically insulating section, so that no conductive connection is formed between the individual electrically conductive sections in the connecting element.
  • the at least one electrically insulating section can form the outer contour of the connecting element and the inner surface that bounds the at least one opening.
  • the multiple electrically conductive sections may have different electrically conductive material compositions and/or different dimensions, particularly with regard to material thickness, shape and/or size of the respective electrically conductive section.
  • electrically conductive material compositions can differ in properties such as density, conductivity, hardness, glass transition temperature, and/or melting point.
  • the different electrically conductive material compositions can differ in their components and/or the proportions of these components. The provision of electrically conductive sections with different properties allows the connecting element to be adapted to the specific requirements with regard to the structure and/or function of the respective cover arrangement and/or the electrochemical cell.
  • the electrically conductive sections consist of the same electrically conductive material composition and/or have the same dimensions. Such a design simplifies the manufacture of the connecting element.
  • the connecting element can be formed in one piece. "In one piece" in the context of the present invention means that the individual electrically conductive and/or electrically insulating sections of the connecting element are so intimately connected that they do not appear as several parts joined together.
  • the at least one electrically insulating section is permanently connected to the at least one electrically conductive section.
  • Permanent connection means that the connected sections cannot be separated without destroying the connecting element(s).
  • the permanent connection is created by material bonding. Depending on the materials to be joined, this material bonding can be achieved by joining techniques such as welding, soldering, bonding, and/or vulcanizing.
  • the joining area represents the area where the connection between at least two electrically conductive and/or electrically insulating sections is formed. This area is preferably formed along the entire contact surface between the at least two sections.
  • the joining area can completely encircle the at least one electrically conductive section. The same applies in the reverse case.
  • the sections and their material-bonded connection can be formed using an injection molding process.
  • a material-bonded connection The sectioning is advantageous because the connections are characterized by high stability.
  • the at least one electrically conductive material composition and/or the electrically insulating material composition may include or consist of at least one polymer material.
  • the at least one electrically conductive material composition and/or the at least one electrically insulating material composition preferably comprise a thermosetting polymer material, a thermoplastic polymer material or an elastomeric polymer material or mixtures thereof or consist of these.
  • At least one of the polymer materials is a thermoplastic polymer material.
  • thermoplastic polymer material for example, hot melt materials are used.
  • the at least one polymer material is selected from the group consisting of polyolefins, polyamides, polyimides, copolyamides, polyamide elastomers, synthetic rubbers, polyethers, phenolic resins, aminoplasts, polyurethanes, polysilicones, polyesters, polycarbonates, polyvinyl(co)polymers, polyacrylates, polyphenylene sulfide, polyterephthalates and/or polystyrenes.
  • Copolymers made from the aforementioned polymer classes are also possible.
  • At least one polymer material selected from the group consisting of epoxy resins, polyethylene, polypropylene, polyamide, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, polyvinyl chloride, acrylonitrile butadiene styrene (ABS), ethylene propylene diene monomer (EPDM) rubber, polyurethane acrylate, polymethyl methacrylate, silicone rubber, polyoxymethylene, polyetheretherketone, polytetrafluoroethylene polymethacrylate, polyphenylene sulfide, and/or polyacrylate.
  • the aforementioned (co-)polymers exhibit advantageous chemical and physical properties for use in the connecting element, such as chemical inertness, good mechanical properties, and good machinability.
  • the electrically conductive material composition consists of only one polymer material, then the polymer material must be an electrically self-conducting polymer material.
  • Preferred electrically self-conducting polymer materials are poly-3,4-ethylenedioxythiophene-based polymers (PEDOT), in particular polystyrenesulfonate-doped PEDOT (PEDOT:PSS), trans-polyacetylene, polypyrrole, polyaniline, poly(phenylene), in particular poly(p-phenylene-vinylene), polythiophene or mixtures thereof.
  • the at least one electrically conductive material composition and/or the at least one electrically insulating material composition comprise one or more fillers.
  • the total proportion of fillers in the at least one electrically conductive material composition and/or in the at least one electrically insulating material composition may be 0.1 to 10.0 wt.%, preferably 1.0 to 5.0 wt.%.
  • the one or more fillers are selected in particular from one or more of the following: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.
  • the use of one or more fillers preferably optimizes the settling behavior of the material composition.
  • the at least one electrically conductive material composition and the at least one electrically insulating material composition comprise the same at least one polymer material and/or the same fillers. Due to their similar composition, these material compositions exhibit correspondingly similar physical and/or chemical properties, which can facilitate the manufacture of the connecting element.
  • the conductive material composition includes at least one conductive additive.
  • a conductive additive is an electrically conductive material.
  • electrically conductive is understood to mean, in particular, an electrical conductivity of 10 ⁇ 1 S/m or more, especially 106 S/m or more.
  • the at least one conductive additive can be selected from one or more of the following: carbon materials, in particular conductive carbon black, graphite, Graphene, carbon nanotubes, carbon fibers and/or carbon nanobulbs, particulate metallic materials, in particular metal powders, electrically conductive ceramic materials, in particular nitrides and/or carbides, electrically conductive polymers, in particular trans-polyacetylene, polypyrrole, polyaniline, polyphenylene, polythiophene and/or polystyrenesulfonate doped poly-(3,4-ethylenedioxythiophene).
  • carbon materials in particular conductive carbon black, graphite, Graphene, carbon nanotubes, carbon fibers and/or carbon nanobulbs
  • particulate metallic materials in particular metal powders
  • electrically conductive ceramic materials in particular nitrides and/or carbides
  • electrically conductive polymers in particular trans-polyacetylene, polypyrrole, polyaniline, polyphenylene, polythi
  • Preferred particulate metallic materials preferably include aluminium, copper, titanium, iron, silver and/or alloys of the aforementioned materials or are formed therefrom.
  • the particulate metallic materials include alloys of the aforementioned materials or are formed from them.
  • the electrical conductivity of the electrically conductive material composition can be adjusted for the at least one electrically conductive section in order to set a resistance between the first component with the first, preferably positive, potential and the second component with the second, preferably negative, potential.
  • the weight fraction of the at least one conductive additive can range from 0.1 to 15.0, preferably 2.0 to 8.0 wt.% of the electrically conductive material composition.
  • the proportion of the at least one conductive additive can be selected depending on the desired electrical conductivity of the electrically conductive material composition.
  • the connecting element can include at least one positioning projection. This at least one positioning projection can engage with a correspondingly complementary positioning recess of a component of the cover assembly when the connecting element is installed in a cover assembly.
  • the positioning projection can have a circular, oval, square or rectangular cross-section in the principal extension plane.
  • the connecting element can have at least one positioning recess which can engage with a correspondingly complementary projection of a component of the cover arrangement.
  • the connecting element can include at least one electrolyte filling opening.
  • the at least one positioning projection and/or the at least one electrolyte filling opening can be formed in the at least one electrically insulating section of the connecting element.
  • the cover arrangement can be a cover arrangement for an electrochemical cell.
  • the electrochemical cell can be a prismatic cell and/or a lithium-ion cell.
  • the electrochemical cell can be part of an electrochemical system that includes at least one such electrochemical cell.
  • the electrochemical system can be a lithium-ion battery.
  • the cover arrangement has the following features: at least one first component;
  • At least one first component has a first potential; at least one second component;
  • a second potential is applied to at least one second component; and a connecting element described herein for setting a resistance between at least one first component and at least one second component and/or for positioning the at least one first component and/or at least one second component.
  • the connecting element of the cover arrangement can be designed, in particular, to set a resistance between the first component and the second component.
  • the connecting element establishes an electrically conductive connection in the cover arrangement via the at least one electrically conductive section between the at least one first component, to which the first, preferably positive, potential is applied, and the at least one second component, to which the second, preferably negative, potential is applied.
  • the at least one first component is in contact with the connecting element at a first surface of the connecting element, wherein the first surface is at least partially formed by the at least one conductive section and extends parallel to the main extension plane of the connecting element.
  • the at least one second component is in contact with the connecting element on a second surface of the connecting element, wherein the second surface is facing away from the first surface of the connecting element and is formed at least partially by the at least one conductive section.
  • the connecting element is arranged between the at least one first component and the at least one second component.
  • the first component to which the first potential is applied can be a first cell terminal; a first contact element for connecting the first cell terminal to a first connecting conductor; or the first connecting conductor.
  • the second component to which the second potential is applied can be a second cell terminal; a second contact element for connecting the second cell terminal to a second connecting conductor; the second connecting conductor; or a cover element.
  • the first, preferably positive, potential can also be applied to the cover element.
  • the cover element preferably has at least one opening.
  • the cover element comprises or is made of a metallic material. This can facilitate processing.
  • the cover element is made of a sheet of metal, such as aluminum.
  • the first cell terminal for example, is an anode of an electrochemical cell.
  • the second cell terminal for example, is a cathode of the electrochemical cell.
  • the first cell terminal forms the cathode and/or that the second cell terminal forms the anode.
  • the first cell terminal and the second cell terminal of the cover assembly can be used to connect an electrochemical cell comprising the cover assembly to a cell contacting system.
  • the first connecting conductor preferably serves as an electrical connection between an electrochemical element of an electrochemical cell and the first contact element.
  • the second connecting conductor serves in particular to provide an electrical connection between the electrochemical element of the electrochemical cell and the second contact element.
  • the first contact element and the first connecting conductor and/or the second contact element and the second connecting conductor can be formed in one piece or as a single unit.
  • the connecting element can be configured, in particular, to define the position of at least one first component and/or at least one second component relative to the connecting element. This definition can be achieved by means of force-fit, positive locking, and/or material locking.
  • the connecting element can have positioning projections and/or positioning recesses, wherein the component to be defined has correspondingly complementary positioning projections and/or positioning recesses.
  • connecting element and the component to be defined can be designed to be complementary, at least in sections.
  • a fixation by the at least partially complementary design of the connecting element and the component to be fixed can be achieved in particular by the fact that the at least one electrically insulating section and the at least one electrically conductive section of the connecting element have at least partially different material thicknesses, so that the preferably frame-like connecting element has at least partially an L- or T-shaped cross-sectional profile.
  • the first and/or second surface of the connecting element in the joining area of the sections with different material thicknesses has a stepped structure, at least in sections, preferably along the entire joining area.
  • the at least one first and/or second component of the cover assembly can be attached to and/or within this stepped structure.
  • the at least one electrically insulating section has a greater material thickness. This has the advantage that the at least one electrically insulating section provides the function of positioning and/or fixing at least one component, thus eliminating the need for the expensive, at least one electrically conductive section.
  • the material composition can only be used to form at least one electrically conductive section.
  • the cover element is fixed to the first surface of the connecting element and the first contact element and/or the first connecting conductor is fixed to the second, opposite surface of the connecting element.
  • the cover arrangement can further comprise at least one insulating element, preferably a plate-shaped one.
  • the insulating element has, in particular, one or more positioning projections on a side facing the cover element.
  • the one or more positioning projections preferably engage in one or more complementary positioning recesses of the cover element.
  • the insulating element may be provided with one or more positioning recesses. These one or more positioning recesses of the insulating element engage, in particular, with one or more positioning projections of the cover element.
  • At least the cover element and the connecting element form a cavity for receiving and/or producing a potting element.
  • the cover element may be provided with at least one recessed area around the opening for receiving the potting element on a side facing away from the connecting element.
  • This recessed area could, for example, be a potting basin. It may be advantageous for the connecting element and the cover element to be aligned and/or fixed in such a way that the at least one opening of the cover element and the at least one opening of the connecting element are aligned one above the other.
  • the potting element may define the contact element on the connecting element; and/or the potting element define the cover element on the connecting element; and/or the potting element define the first cell terminal on the connecting element; and/or the potting element define the contact element on the cover element; and/or the potting element defines the first cell terminal on the cover element; and/or the potting element defines the contact element on the first cell terminal; and/or the potting element consists of a potting material composition which includes or consists of at least one potting polymer material.
  • the use of the potting compound represents a simple option for producing the cover arrangement.
  • the potting compound composition in its cured state, has a hardness of 40 to 100 Shore D, preferably 50 to 97 Shore D, and particularly preferably 60 to 95 Shore D.
  • the hardness is determined in particular according to DIN EN ISO 868.
  • the at least one potting material composition comprises or is formed from one or more of the following potting polymer materials:
  • Epoxy resin material phenolic resin material, aminoplast material, polyurethane material, silicone material, polyester resin material, ABS (acrylonitrile butadiene styrene) resin material.
  • An epoxy resin material for example an epoxy resin, has proven particularly advantageous for use as at least one potting polymer material. This material exhibits optimized corrosion resistance. This can be especially beneficial with regard to contact with an electrolyte used in an electrochemical cell.
  • epoxy resin materials exhibit optimized gas tightness, which is why sealing with epoxy resin materials is advantageous for optimized tightness.
  • single-component potting compound compositions are used.
  • At least one potting polymer material is a highly cross-linked material, for example, a highly cross-linked epoxy resin material.
  • the potting material composition has a viscosity of 102 to 106 mPa s, preferably 103 to 105 mPa s, when manufacturing the potting element.
  • the cavity is preferably filled with the potting compound at ambient pressure.
  • the potting material composition can include at least one filler.
  • the total proportion of fillers in the potting material composition can be 5.0 to 50.0 wt.%, preferably 15.0 to 35.0 wt.%.
  • the at least one filler is selected in particular from one or more of the following: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.
  • the connecting element when installed, can have a total electrical resistance of 100 to 10000 ohms, preferably 500 to 7500 ohms, especially preferably have a resistance of 2500 to 5000 ohms, measured between the first component and the second component.
  • the (total) resistance can be adjusted via the total cross-section available for electrical conduction of the at least one electrically conductive section and/or via the material thickness of the at least one electrically conductive section and/or the at least one electrically conductive material composition of the at least one electrically conductive section of the connecting element.
  • the electrochemical cell can be a prismatic cell and/or a lithium-ion cell.
  • An electrochemical cell can be a single electrochemical cell for an electrochemical system.
  • the electrochemical system can be a lithium-ion battery and may comprise multiple lithium-ion cells.
  • the electrochemical cell includes, in particular, a cover arrangement as described herein.
  • the electrochemical cell further comprises an electrochemical element for absorbing, storing, and/or providing electrical energy.
  • the electrochemical element is, in particular, a so-called cell coil.
  • the electrochemical element is preferably electrically connected to a first contact element of the cover arrangement via a first connecting conductor.
  • the electrochemical element is preferably electrically connected to a first contact element of the cover arrangement via a second connecting conductor.
  • the electrochemical cell further comprises a housing for receiving the electrochemical element, the housing enclosing an interior space of the electrochemical cell.
  • the housing may include the cover arrangement described herein.
  • the cover assembly is preferably positively connected and/or force-fit and/or materially bonded to the housing, which is particularly cup-shaped.
  • the cover assembly serves in particular to cover and/or seal the housing.
  • the invention further comprises a method for manufacturing a connecting element according to the relevant independent claim.
  • the connecting element can be a connecting element for positioning components of a cover arrangement for an electrochemical cell and/or for setting a resistance between a first component with a first, preferably positive, potential and a second component with a second, preferably negative, potential of a cover arrangement for an electrochemical cell.
  • the method comprises the following steps: i. providing at least one electrically conductive material composition and at least one electrically insulating material composition; ii. forming at least one electrically conductive section from the at least one electrically conductive material composition and at least one electrically insulating section from the at least one electrically insulating material composition, such that the at least one electrically conductive section and the at least one electrically insulating section (110) are connected to each other.
  • the at least one electrically conductive material composition used in the process can be any electrically conductive material composition described herein.
  • the process uses at least one electrically insulating element.
  • the material composition can be any electrically insulating material composition described herein.
  • the bond formed in step ii. is preferably insoluble and in particular metallurgical.
  • a hardening step for example vulcanization and/or cross-linking, can take place.
  • At least one post-processing step can be a process such as machining, deburring, grinding, coating, painting, drilling, milling, joining and/or coating the connecting element.
  • step ii is carried out in an injection molding process, preferably a two-component injection molding process.
  • the injection molding process may in particular include the following steps: plasticizing and metering the at least one electrically conductive material composition and/or the at least one electrically insulating material composition;
  • the injection of the material compositions can be simultaneous (co-injection) or consecutive.
  • separate syringe units are used for the at least one electrically conductive material composition and the at least one electrically insulating material composition.
  • the at least one electrically conductive material composition and/or the at least one electrically insulating material composition has a temperature of 150 to 350°C, preferably 200 to 300°C, at least temporarily during injection.
  • Fig. 1 a schematic sectional view of a cover arrangement
  • Fig. 2 a schematic top view of a first embodiment of a
  • Fig. 3 a detailed view of the connecting element from Fig. 2 as
  • Fig. 4 a schematic top view of a second embodiment of a
  • Fig. 5 a detailed view of the connecting element from Fig. 4 as
  • Fig. 6 a schematic top view of a third embodiment of a
  • FIG. 7 a detailed view of the connecting element from Fig. 6 as
  • Fig. 8 a detailed view of the connecting element from Fig. 6 as
  • Fig. 9 a schematic top view of a fourth embodiment of a
  • Fig. 10 a detailed view of the connecting element from Fig. 9 as
  • Fig. 11 a detailed view of the connecting element from Fig. 9 as
  • Fig. 12 a schematic top view of a fifth embodiment of a
  • Fig. 13 a detailed view of the connecting element from Fig. 12 as
  • Fig. 14 a detailed view of the connecting element from Fig. 12 as
  • Fig. 1 shows a cross-sectional view of a cover arrangement 101 according to an embodiment of the invention.
  • the cover arrangement 101 is suitable for an electrochemical cell.
  • the electrochemical cell is, in particular, a lithium-ion cell.
  • the cover arrangement 101 comprises a cover element 120, preferably plate-shaped, which has at least one opening.
  • a second potential is present at the cover element 120.
  • the cover element 120 comprises a metallic material, for example aluminum, or is formed from the metallic material.
  • the cover element 120 is formed from a metal sheet, in particular from an aluminum sheet.
  • the cover element 120 can be materially bonded to a housing of an electrochemical cell (not shown).
  • the cover arrangement 101 comprises a first connecting conductor 123.
  • the first connecting conductor 123 serves in particular for an electrical connection of an electrochemical element (not shown), in particular a so-called cell winding, with a first cell terminal 121 of the cover arrangement 101, in particular via a first contact element 122 of the cover arrangement 101.
  • the first cell terminal 121 and the first contact element 122 are in electrically conductive contact through the opening of the cover element 120.
  • the first cell terminal 121 is in contact with the first contact element 122.
  • the cover arrangement 101 further comprises the first cell terminal 121.
  • the first cell terminal 121 preferably comprises a first metallic material, for example aluminum, or is formed therefrom.
  • a first, preferably positive, potential is applied to the first cell terminal 121.
  • the first cell terminal 121 is configured as an anode.
  • the first cell terminal 121 can be a cathode (not shown).
  • the cover arrangement 101 can include a second cell terminal, a second connecting conductor and a second contact element (all not shown), the structure and function of which are described below. and/or arrangement preferably analogous to the elements 121, 122 and 123 of the cover arrangement 101 described above.
  • a second, preferably negative, potential is present at these elements of the cover arrangement 101. If the second potential is also present at the cover element 120, the conductive contact between the second cell terminal and the second connecting conductor can be made via the second contact element and the cover element 120, wherein the cover element 120 is preferably arranged between the second contact element and the second cell terminal.
  • the cover arrangement 101 further comprises a connecting element 100.
  • the connecting element 100 includes at least one electrically insulating section 110, wherein the at least one electrically insulating section 110 consists of an electrically insulating material composition or is formed at least section by section thereof, and at least one electrically conductive section 111, wherein the at least one electrically conductive section 111 consists of an electrically conductive material composition or is formed at least section by section thereof.
  • the at least one electrically insulating section 110 and the at least one electrically conductive section 111 are connected to each other in a joining area 112.
  • a material-bonded connection between sections 110 and 111 is formed in the joining area 112.
  • the electrically insulating section 110 can surround the electrically conductive section 111.
  • the electrically insulating section 110 can be located on the outside and the electrically conductive section 111 on the inside.
  • the connecting element 100 further comprises an opening which is bounded by an inner surface 114 of the connecting element 100.
  • the connecting element 100 preferably has a frame-like structure.
  • the electrically insulating section 110 has a greater material thickness than the electrically conductive section 111. Therefore, the inner surface 114 is bordered by both an inner surface 114a of the electrically insulating section 110 and by a surface 114a of the electrically conductive section 110. Inner surface 114a is arranged as an inwardly offset inner surface 114b of the electrically conductive section 111.
  • the material thickness of the electrically insulating section 110 can be 0.25 to 3.0 mm, preferably 0.5 to 1.5 mm.
  • the material thickness of the electrically conductive section 111 can be 0.1 to 1.0 mm, preferably 0.25 to 0.75 mm.
  • the connecting element 100 has the L-profile shown, at least in sections.
  • the resulting stepped structure preferably extends along the entire joining area 112.
  • the first contact element 122 of the first connecting conductor 123 is dimensioned, at least in sections, such that the position of the first contact element 122 relative to the connecting element 100 is determined by the connecting element 100, in particular by its stepped structure, on a first surface of the connecting element 110.
  • the stepped structure forms a recess in the connecting element 100 into which the first contact element 122 can be placed.
  • the first contact element 122 can be fixed to the connecting element 100 by force-fit, form-fit, and/or material-fit.
  • the connecting element 110 may preferably have positioning projections (not shown) and/or positioning recesses (not shown) for determining the position of the first contact element 122 and/or the cover element 120, which in this case is arranged on a second surface of the connecting element 100 facing away from the first surface.
  • An electrically conductive connection is established between the first contact element 122 and the cover element 120 via at least one electrically conductive section 111 of the connecting element 100, and thus a defined resistance is established between the first component 122 with the first potential and the second component 120 with the second potential.
  • the resistance set between the first contact element 122 and the cover element 120 can be from 100 to 10000 ohms, preferably 500 to 7500 ohms, particularly preferably 2500 to 5000 ohms.
  • the at least one electrically conductive material composition and/or the electrically insulating material composition may comprise or consist of at least one polymer material, wherein the at least one polymer material may be any polymer material described herein.
  • the at least one electrically conductive material composition and/or the electrically insulating material composition may further comprise at least one of the fillers described herein in the quantities described.
  • the at least one electrically conductive material composition may furthermore comprise at least one of the conductive additives described herein in the quantities described.
  • the opening in the cover element 120 and the opening in the connecting element 100 form a cavity 124 for receiving and/or manufacturing a potting element 125.
  • the potting element 125 preferably fixes the first contact terminal 121, the first contact element 122, the cover element 120, and the connecting element 100 in their positions relative to each other.
  • the potting element 125 can consist of any potting material composition described herein.
  • Fig. 2 shows a schematic top view of a first surface of a connecting element 100 according to a first embodiment of the invention in a principal extension plane of the connecting element 100.
  • the connecting element comprises an electrically conductive section 111, which is surrounded by an electrically insulating section 110.
  • connection element 100 An external shape or contour of the connecting element 100 is defined by the electrically insulating section 110.
  • the connecting element 100 can have the substantially rectangular shape shown.
  • the electrically conductive section 111 and the electrically insulating section 110 are connected to each other, preferably by a material bond, in a joining area 112 which completely surrounds the electrically conductive section.
  • the at least one electrically conductive material composition and/or the electrically insulating material composition can comprise or consist of at least one polymer material, wherein the at least one polymer material can be any polymer material described herein. This also applies to all other embodiments.
  • the at least one electrically conductive material composition and/or the electrically insulating material composition may further comprise at least one of the fillers described herein in the quantities described. This also applies to all other embodiments.
  • the at least one electrically conductive material composition may further comprise at least one of the conductive additives described herein in the quantities described. This also applies to all other embodiments.
  • the connecting element 100 includes an opening 113 (central exception) which is bounded by an inner surface 114 of the connecting element 110.
  • the connecting element 100 has a frame-like structure due to the opening 113.
  • both the length and width of the opening 113 are greater than the width of the strips that form the frame-like structure.
  • the inner surface 114 is in this case completely formed by an inner surface 114b of the electrically conductive section 111. This is particularly evident from Fig. 3, which shows a detailed view of the connecting element 100 from Fig. 2 as a sectional view along the axis AA.
  • the electrically conductive section 111 and the electrically insulating section 110 have essentially the same average material thickness.
  • the connecting element 100 is a flat material, in particular a planar material, whose length and width (principal plane of extension) are many times greater than its thickness.
  • the material thickness of the electrically insulating section 110 and the electrically conductive section 111 can be 0.25 to 3.0 mm, preferably 0.5 to 1.5 mm.
  • FIG. 4 shows a schematic top view of a first surface of the connecting element 100
  • Fig. 5 shows a detailed view of the connecting element 100 from Fig. 4 as a sectional view along the axis A-A.
  • the second embodiment of the connecting element 100 differs from the first embodiment described above essentially only in that an electrically insulating section 110 is surrounded by an electrically conductive section 111.
  • the electrically insulating section 110 thus represents an inner section of the connecting element 100, wherein an inner surface 114a of the electrically insulating section 110 forms an inner surface 114 of the connecting element 100, which limits an opening 113.
  • Fig. 6 shows a schematic top view of a first surface of a connecting element 100 according to a third embodiment of the invention in a principal extension plane of the connecting element 100.
  • the connecting element 100 comprises an electrically insulating section 110 and two electrically conductive sections 111a and 111b.
  • the two electrically conductive sections 111a and 111b are spaced apart from each other, preferably at opposite ends or peripheral areas of the connecting element 100.
  • the first electrically conductive section 111a is completely enclosed by the electrically insulating section 110.
  • the first electrically conductive section 111a and the electrically insulating section 110 are connected to each other, preferably by a material bond, in a first joining area 112a, which completely surrounds the first electrically conductive section 111a.
  • the first electrically conductive section 111a preferably has a substantially rectangular shape.
  • the second electrically conductive section 111b is also completely enclosed by the electrically insulating section 110.
  • the second electrically conductive section 111b and the electrically insulating section 110 are joined together, preferably by a material bond, in a second joining area 112b, which completely surrounds the second electrically conductive section 111b.
  • the second electrically conductive section 111b preferably has a substantially rectangular shape.
  • the connecting element further comprises an opening 113, which is bounded by an inner surface 114 of the connecting element 100.
  • the inner surface 114 is formed by an inner surface 114a of the electrically insulating section 110.
  • the electrically insulating section 110 essentially forms a frame-like structure of the connecting element 100.
  • Fig. 7 shows a detailed sectional view of the connecting element 100 from Fig. 6 along axis A-A. It is clearly visible that the central opening 113 is surrounded by the electrically insulating layer 110.
  • Figure 8 shows a detailed sectional view of the connecting element from Figure 6 along axis BB. Due to the enclosing of the first electrical
  • the conductive section 111a through the electrically insulating section 110 forms a kind of sandwich structure, as shown in the sectional view.
  • the material thickness of the electrically insulating section 110 and the first electrically conductive section 111a can be 0.25 to 3 mm, preferably 0.5 to 1.5 mm.
  • the first and second electrically conductive sections 111a and 111b may consist of different electrically conductive material compositions or at least be formed from them section by section.
  • the same electrically conductive material composition is preferably used for the electrically conductive sections 111.
  • the spacing of the electrically conductive sections 111 shown can enable the formation of an electrically conductive connection between different first and/or second components.
  • Fig. 9 shows a schematic top view of a first surface of a connecting element 100 according to a fourth embodiment of the invention in a principal extension plane of the connecting element 100.
  • This embodiment represents a modification of the connecting element 100 shown in Figures 6 to 8.
  • the connecting element 100 comprises an electrically insulating section 110 and six electrically conductive sections 111a to 111f.
  • the electrically conductive sections 111 are arranged at intervals from one another.
  • the first to third electrically conductive sections 111a to 111c are preferably grouped at a first end or peripheral region of the connecting element 100.
  • the fourth to sixth electrically conductive sections 111d to 111f are preferably grouped at a first end or peripheral region of the connecting element 100.
  • the electrically conductive sections 111a to 111c and/or 111d to 111e can be regularly spaced apart along an axis. be arranged so that the electrically conductive sections 111 are arranged in a mirror-symmetrical manner.
  • the electrically conductive sections 111 can be circular in the main plane of extension of the connecting element 100. Alternatively, they can also be square or rectangular (not shown). Preferably, all electrically conductive sections 111 have the same configuration, which simplifies the manufacture of the connecting element 100.
  • the electrically insulating section 110 surrounds the electrically conductive sections 111.
  • the first electrically conductive section 111a can be connected to the electrically insulating section 110 in a first joining area 112a, preferably by a material bond.
  • the opening 113 is bounded by an inner surface 114 of the connecting element 100, which in this case is formed by an inner surface 114a of the electrically insulating section 110.
  • Fig. 10 shows a schematic detail view of the connecting element from Fig. 9 as a sectional view along the axis A-A.
  • the frame-like structure of the connecting element 100 is essentially formed by the electrically insulating section 110, which preferably consists of or comprises an inexpensive electrically insulating material composition. A positioning and/or centering function of the connecting element 100 can thus be performed solely by the electrically insulating section 110.
  • the electrically conductive sections 111 can be used exclusively to establish a resistance between at least one first component with a first potential (not shown) and at least one second component with a second potential (not shown) of a cover arrangement (not shown). This can reduce the required amount of at least one electrically conductive material composition and thus lower manufacturing costs.
  • the essentially cylindrical shape of the electrically conductive sections 111 becomes apparent.
  • Figure 11 is a detailed view of the connecting element 100 from Figure 9 as a sectional view along axis BB.
  • the majority of electrically conductive sections 111 in the connecting element 100 shown makes it possible to install the connecting element 100 in differently designed cover arrangements for electrochemical cells.
  • Fig. 12 shows a first surface of a connecting element 100 according to a fifth embodiment of the invention in a principal extension plane of the connecting element 100.
  • the connecting element 100 comprises an electrically conductive section 111, which is enclosed by an electrically insulating section 110.
  • the fifth embodiment can be regarded as a combination of the electrically conductive sections 111 of the first (see Fig. 2) and third embodiments described above (see Fig. 6).
  • the electrically conductive section 111 which is itself frame-like, has widened, essentially rectangular frame sections on two opposing sides. In the installed state of the connecting element 100, this can simplify the formation of a conductive connection between at least one first and at least one second component of a cover arrangement for an electrochemical cell due to the locally larger contact area in the region of the widened frame sections.
  • the outer shape (contour) of the connecting element 100 is defined by the electrically insulating section 110.
  • the connecting element 100 can have the substantially rectangular shape shown.
  • the connecting element 100 has an opening 113, which is bounded by an inner surface 114 of the connecting element 100.
  • Fig. 13 which shows a detailed view of the connecting element 100 from Fig. 12 as a sectional view along the axis AA, the electrically insulating section 110 has a higher material thickness than the electrically conductive section 111.
  • the material thickness of the electrically insulating section 110 can be 0.25 to 3 mm, preferably 0.5 to 1.5 mm.
  • the material thickness of the electrically conductive section 111 can be 0.1 to 1.0 mm, preferably 0.25 to 0.75 mm.
  • the inner surface 114 is formed in this case by an inner surface 114a of the electrically insulating section 110 and by an inner surface 114b of the electrically conductive section 111.
  • the inner surface 114a is offset outwards from the inner surface 114b.
  • the connecting element 100 can have the L-profile shown.
  • the resulting stepped structure preferably extends along the entire joining area 112, in which the electrically conductive section 111 and the electrically insulating section 110 are joined, preferably by a material bond.
  • the stepped structure of the connecting element 100 can serve to define the position of a component 120, 121, 122 and 123 when the connecting element 100 is installed.
  • the cover arrangement 101 shown in Fig. 1 comprises the connecting element 100 shown in Fig. 12.
  • Fig. 14 shows a detailed view of the connecting element 100 from Fig. 12 as a sectional view along the axis B-B. It can be seen that the connecting element 100 has at least one positioning projection 115.
  • the positioning projection 115 can, in the installed state of the connecting element 100, determine the position of a component of the cover assembly relative to the connecting element 100. Preferably, in the installed state, the positioning projection 115 determines the position of the cover element of the cover assembly relative to the connecting element 100.
  • the at least one positioning projection 115 preferably has a rectangular or square cross-section in the principal plane of extension. The rectangular or square cross-section prevents the connecting element 100 and the respective fixed component from rotating relative to each other. Alternatively, the at least one positioning projection can have a round or oval cross-section.
  • the positioning projection 115 is formed in one piece, preferably in one part, with the connecting element.
  • the connecting element 100 has at least one positioning recess (not shown). In the installed state of the connecting element 100, the positioning recess can engage with a correspondingly complementary positioning projection of a component of the cover assembly.
  • the connecting element 100 further comprises at least one electrolyte filling opening 116.
  • the electrolyte filling opening 116 preferably also extends through the cover element and optionally an insulating element of the cover assembly and can serve for filling an electrolyte into an electrochemical cell.
  • the at least one positioning projection 115 and/or the electrolyte filling opening 116 and/or at least one positioning recess are preferably formed in the electrically insulating section 110 of the connecting element 100.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un élément de liaison destiné à mettre en place des composants d'un ensemble couvercle pour une cellule électrochimique et/ou pour ajuster la résistance entre un premier composant d'un ensemble couvercle pour une cellule électrochimique, ledit premier composant ayant un premier potentiel, et un second composant de l'ensemble couvercle, ledit second composant ayant un second potentiel. L'élément de liaison comprend au moins une ouverture, qui est délimitée par une surface interne de l'élément de liaison (100), au moins une partie électriquement conductrice, qui est constituée d'une première composition de matériau électroconducteur ou est au moins partiellement formée à partir de celle-ci, et au moins une partie électriquement isolante, qui est constituée d'une seconde composition de matériau électriquement isolante ou est au moins partiellement formée à partir de celle-ci.
PCT/EP2025/063335 2024-05-21 2025-05-15 Élément de liaison pour ensemble couvercle et son procédé de production Pending WO2025242520A1 (fr)

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DE102024114202.2A DE102024114202A1 (de) 2024-05-21 2024-05-21 Verbindungselement für eine Abdeckanordnung und Verfahren zu dessen Herstellung
DE102024114202.2 2024-05-21

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WO2025242520A1 true WO2025242520A1 (fr) 2025-11-27

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DE102012009270A1 (de) 2011-05-13 2012-11-15 Festool Gmbh Führungssytem für eine Hand-Werkzeugmaschine oder ein Markierwerkzeug
EP2541650A1 (fr) 2011-06-30 2013-01-02 SB LiMotive Co., Ltd. Batterie rechargeable comprenant un joint amélioré et structure de borne de batterie
US20150214516A1 (en) 2014-01-28 2015-07-30 Samsung Sdi Co., Ltd. Secondary battery
DE102017200390A1 (de) 2017-01-11 2018-07-12 Elringklinger Ag Elektrochemische Zelle, elektrochemische Einrichtung, Verfahren zur Herstellung einer elektrochemischen Zelle
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WO2021140083A1 (fr) 2020-01-07 2021-07-15 Elringklinger Ag Cellule électrochimique, système électrochimique et procédé de fabrication d'une cellule électrochimique
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