EP4121994A1 - Dispositif électrique, en particulier micro-batterie, et son procédé de production - Google Patents

Dispositif électrique, en particulier micro-batterie, et son procédé de production

Info

Publication number
EP4121994A1
EP4121994A1 EP21712068.2A EP21712068A EP4121994A1 EP 4121994 A1 EP4121994 A1 EP 4121994A1 EP 21712068 A EP21712068 A EP 21712068A EP 4121994 A1 EP4121994 A1 EP 4121994A1
Authority
EP
European Patent Office
Prior art keywords
glass
opening
conductor
electrical device
housing
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
EP21712068.2A
Other languages
German (de)
English (en)
Inventor
Helmut Hartl
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.)
Schott AG
Original Assignee
Schott 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 Schott AG filed Critical Schott AG
Publication of EP4121994A1 publication Critical patent/EP4121994A1/fr
Pending legal-status Critical Current

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
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/191—Inorganic material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/80—Gaskets; Sealings
    • 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
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • 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
    • 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
    • H01M50/154—Lid or cover comprising an axial bore for receiving a central current collector
    • 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
    • H01M50/157—Inorganic material
    • H01M50/159—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/182—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells with a collector centrally disposed in the active mass, e.g. Leclanché cells
    • 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
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • 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
    • H01M50/562—Terminals 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2204/00—Glasses, glazes or enamels with special properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • 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
    • 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
    • Y02E60/13—Energy storage using capacitors
    • 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 invention relates to an electrical device, in particular an electrical storage device, preferably a battery, in particular a microbattery and / or a capacitor with a bushing through a housing part made of metal, in particular iron, iron alloys, iron-nickel alloys, iron-nickel-cobalt Alloys, steel, stainless steel or stainless steel, the one housing part having at least one opening, the opening receiving a contact element made of a conductive material in a glass or glass ceramic material.
  • an electrical device in particular an electrical storage device, preferably a battery, in particular a microbattery and / or a capacitor with a bushing through a housing part made of metal, in particular iron, iron alloys, iron-nickel alloys, iron-nickel-cobalt Alloys, steel, stainless steel or stainless steel, the one housing part having at least one opening, the opening receiving a contact element made of a conductive material in a glass or glass ceramic material.
  • a method for producing an electrical device is also specified, which is characterized by a bushing with pressure glazing.
  • Batteries in the context of the invention are both a disposable battery, which can be disposed of and / or recycled after being discharged, as well as accumulators.
  • Accumulators preferably lithium-ion batteries, are provided for various applications such as portable electronic devices, cell phones, power tools and, in particular, electric vehicles.
  • the batteries can replace traditional energy sources such as lead-acid batteries, nickel-cadmium batteries or nickel-metal hydride batteries.
  • the battery can also be used in sensors or in the Internet of Things.
  • Storage devices in the context of the invention are also understood to mean capacitors, in particular also supercapacitors.
  • supercapacitors also called supercaps
  • supercaps are electrochemical energy stores with a particularly high power density.
  • foil and Electrolytic capacitors are not a dielectric in the traditional sense. In them, in particular, the storage principles of static storage of electrical energy through charge separation in a double-layer capacitance and the electrochemical storage of electrical energy through charge exchange with the help of redox reactions in a pseudocapacitance are implemented.
  • Supercapacitors include, in particular, hybrid capacitors, in particular lithium-ion capacitors. Their electrolyte usually comprises a solvent in which conductive salts are dissolved, usually lithium salts. Supercapacitors are preferably used in applications that require a large number of charge / discharge cycles. Supercapacitors can be used particularly advantageously in the automotive sector, in particular in the area of recuperation of braking energy. Other applications are of course also possible and encompassed by the invention.
  • Lithium-ion batteries as a storage device have been known for many years. In this regard, reference is made, for example, to "Handbook of Batteries", David Linden, editor, 2nd edition, McCrawhill, 1995, chapters 36 and 39.
  • Lithium-ion batteries in particular for applications in an automotive environment, generally have a large number of individual battery cells that are connected in series with one another.
  • the battery cells connected in series or in series with one another are combined to form what are known as battery packs, and several battery packs then form a battery module, which is also referred to as a lithium-ion battery.
  • Each The battery cell has electrodes that are led out of a housing of the battery cell. The same applies to the housing of supercapacitors.
  • the tightness can affect z.
  • a short circuit or change in temperature of the battery or battery cell can lead to a reduced service life of the battery or battery cell.
  • the tightness in accident and / or emergency situations is just as important.
  • DE 101 05 877 A1 proposes, for example, a housing for a lithium-ion battery, the housing comprising a metal jacket that is open and closed on both sides.
  • the power connection and the electrode are insulated by a plastic. Disadvantages of the plastic insulation are the limited temperature resistance, the limited mechanical resistance, the aging and the unsafe tightness over the service life.
  • the current feedthroughs are therefore not hermetically sealed in the lithium-ion batteries and capacitors according to the prior art
  • the lid part of the lithium-ion battery is installed.
  • a helium leak rate of a maximum of 1 ⁇ 10 6 mbar I s 1 is generally achieved at a pressure difference of 1 bar, depending on the test specifications.
  • the electrodes are squashed and laser-welded connection components with additional insulators are arranged in the space of the battery.
  • the metals used in DE 2733948 A1 are iron or steel. Light metals such as aluminum are not described in DE 2733948 A1. The melting temperature of the glass or ceramic material is also not specified in DE 2733 948 A1.
  • the alkaline battery described in DE 2733948 A1 is a battery with an alkaline electrolyte which, according to DE 2733948 A1, contains sodium hydroxide or potassium hydroxide. There is no mention of Li-ion batteries in DE 2733948 A1.
  • connection pin Materials for the cell socket, which receives the plated-through hole, are not described, only materials for the connection pin, which can consist of titanium, aluminum, a nickel alloy or stainless steel.
  • EP 0954045 B1 describes an RF bushing with improved electrical effectiveness.
  • the EP 0954045 B1 known bushings it is not a glass-metal bushing.
  • glass-to-metal feedthroughs which are formed directly within, for example, the metal wall of a packaging, are described as disadvantageous, since RF feedthroughs of this type are not permanent due to the embrittlement of the glass.
  • DE 69023071 T2 or EP 0412655 B1 describes a glass-metal bushing for batteries or other electrochemical cells, with glasses with an Si0 2 content of approximately 45% by weight being used and metals, in particular alloys, being used, comprising molybdenum and / or chromium and / or nickel.
  • the use of light metals is just as little described in DE 69023071 T2 as are fusion temperatures or fusion temperatures for the related glasses.
  • the materials for the pin-shaped conductors are also alloys that include molybdenum, niobium or tantalum.
  • a glass-to-metal bushing for lithium-ion batteries is known from US Pat. No. 7,687,200 A1.
  • the housing was made of stainless steel and the pin-shaped conductor was made of platinum / iridium.
  • the glasses TA23 and CABAL-12 are specified as glass materials in US Pat. No. 7,687,200 A1.
  • US Pat. No. 5,015,530 A1 these are Ca0-Mg0-Al 2 0 3 -B 2 0 3 systems with fusion temperatures of 1025 ° C. or 800 ° C.
  • 5,015,530 A1 discloses glass compositions for glass-metal Bushings for lithium batteries have become known which include CaO, Al 2 q 3 , B 2 0 3 , SrO and BaO, the melting temperatures of which are in the range 650 ° C - 750 ° C and are therefore too high for use together with light metals .
  • a bushing has become known in which an essentially pin-shaped conductor is glazed into a metal ring with a glass material.
  • the metal ring is then in turn inserted into an opening or bore in a housing and connected to the inner wall or bore by soldering, for example after a soldering ring has jumped in, in particular in a materially bonded manner.
  • the metal ring consists of a metal which has essentially the same or a similar coefficient of thermal expansion as the glass material in order to compensate for the high coefficient of thermal expansion of the aluminum in the battery housing.
  • the length of the metal ring is always shorter than the bore or opening in the housing.
  • DE 2733948 A1 shows a bushing through a housing part of a battery, the housing part having at least one opening, the opening comprising a conductive material and a glass or glass ceramic material and the conductive material being designed as a cap-shaped element.
  • DE 2733948 A1 does not specify what specific material the conductor is made of.
  • the thickness or wall thickness of the cap-shaped element specified in DE 2733948 A1.
  • a battery with a bushing which has an opening is known, a cap-shaped element being used as a conductor in the opening in an insulating material, which can be glass or a resin.
  • US Pat. No. 6,190,798 B1 too, no information is given about the thickness of the wall thickness of the cap-shaped element.
  • US 2015/0364735 A1 shows a battery with a cap-shaped cover which has areas with reduced thickness as a safety outlet in the event of pressure overload.
  • a conical overpressure safety device is known from WO 2014/176533 A1. Use in batteries is not described in WO 2014/176533 AI.
  • DE 102007063 188 A1 shows a battery with at least one single cell enclosed by a housing and a housing-like overpressure safety device in the form of one or more predetermined breaking points or one or more bursting discs.
  • No. 6,433,276 A1 shows a bushing in which the metallic housing part, conductor and glass material have essentially the same coefficient of expansion.
  • DE 102014016601 A1 shows a housing component, in particular a battery housing or capacitor housing with a bushing, a conductor, in particular a substantially pin-shaped conductor in a glass or glass ceramic material with a glass material outer dimension and a glazing length being passed through a bushing opening, wherein the component has a reinforcement with a component passage opening thickness in the region of the feed-through opening, the component passage opening thickness being greater than the component thickness and the reinforcement having an external reinforcement material dimension.
  • a housing component comprising at least two bodies made of light metal has become known.
  • the first body is a light metal and the second body is a light metal with welding materials, in particular in the form of alloy components of the light metal.
  • a weld joint is formed between the first and second bodies.
  • DE 102013006463 A1 shows a battery bushing, preferably for a lithium-ion battery, more preferably a lithium-ion accumulator, with at least one base body which has at least one opening through which at least one conductor, in particular a substantially pin-shaped conductor, is inserted an electrically insulating material which comprises or consists of a sealing glass, wherein the base body comprises a light metal and / or a light metal alloy, preferably selected from aluminum, magnesium, titanium, an aluminum alloy, a magnesium alloy, a titanium alloy or AlSiC or consists of this.
  • the sealing glass according to DE 102013006463 A1 is a titanate glass with a low phosphate content.
  • DE 102017221 426 A1 shows a special type of implementation.
  • the bushing known from DE 102017221 426 A1 comprises several conductors glazed in an opening, several of the glazed conductors being connected by a flat conductor.
  • the post-published WO 2020/104571 A1 shows an electrical storage device with a bushing, the bushing being let into a battery cover part with a collar. Furthermore, from the Post-publication WO 2020/104571 A1 has become known to provide a flexible flange in the implementation area.
  • DE 11 2012000900 B4 describes a glass, in particular a solder glass, for a bushing, comprising the following components in mol%:
  • AI2O3 0-14 mol%, especially 2-12 mol%
  • BaO 0-20 mol%, in particular 0-20 mol%, preferably 5-20 mol%
  • B12O3 at least 1 mol%, in particular 1-5 mol%, preferably 2-5 mol%
  • the glass of DE 11 2012000900 B4 is free of lead except for impurities.
  • the object of the invention is therefore to specify an electrical device, in particular a storage device, which avoids the disadvantages of the prior art.
  • a compact and tight storage device with small dimensions is to be specified, which can be used as a microbattery and preferably has sufficient tightness. Sufficient tightness should also be provided when the material is heated by the laser welding.
  • a small housing thickness should be made possible, which in addition to the compactness also leads to material savings.
  • reliable electrical insulation of the conductor introduced into the through opening of the housing, in particular the Meta II pin is to be provided.
  • One aim is to provide a storage device which is itself so compact that as much volume as possible is made available inside the housing, so that the battery and / or the capacitor can have the highest possible capacity.
  • the storage device according to the invention with a bushing is therefore particularly suitable for microbatteries.
  • the invention thus also relates in particular to hermetically sealed microbatteries with a bushing as shown in the application.
  • microbatteries are, for example, active RFID and / or medical devices such as hearing aids, blood pressure sensors and / or wireless headphones. In this context, the term is used frequently and is therefore generally known. Micro batteries are also of interest for the Internet of Things.
  • this object is achieved in a first aspect of the invention by an electrical device, in particular a storage device according to claim 1.
  • the object is achieved by an electrical device with a flexible flange according to claim 22.
  • the object is achieved by a microbattery according to claim 36, in which the expansion coefficient of the housing or base body is larger than that of the glass material, that is, pressure glazing is present.
  • the electrical device in particular a storage device, comprises a bushing with an opening into which a conductor, which is also referred to as a contact element, is glazed.
  • the invention is characterized in that the housing part comprises an opening which extends around an axis.
  • the housing part has a first area in which the opening is made and a second area adjacent to the opening and the first area which provides the pressure on the glazing.
  • the first region has a width W essentially perpendicular to the axis of the opening.
  • the width W which the compressive force makes available in the case of pressure glazing is always greater than the thickness or material thickness D 2 of the housing part in the second area adjacent to the opening or first area. Due to the metal with the width W and a third expansion coefficient a 3 which is always greater than the second expansion coefficient a 2 of the glass material, sufficient prestressing is applied to the glass or glass ceramic material for pressure glazing.
  • the conductor or metal pin has a first coefficient of expansion CH.
  • the thickness or material thickness D 2 , D E of the housing part adjacent to the opening is preferably 0.1 mm to 1 mm, preferably 0.1 mm to 0.6 mm.
  • the width W of the first area which applies the necessary prestress, is in the range from 0.6 mm to 1 mm, preferably in the range from 0.7 mm to 0.9 mm.
  • the conductive material in particular the conductor, has a first coefficient of expansion CH, preferably up to 11 ⁇ 10 6 1 / K.
  • the second coefficient of expansion a 2 of the glass or glass ceramic material is preferably in the range 9 to 11 * 10 6 1 / K and the coefficient of expansion a 3 des
  • Housing part in particular the sheet metal part in the range 12 to 19 * 10 6 1 / K.
  • a 3 of the housing material, in particular of the sheet metal part a tension is built up on the glass material through the sheet metal part and pressure glazing is made available.
  • pressure glazing has the advantage that the leaks that can occur in an adapted implementation after the laser welding process are reliably avoided, since there is always a preload due to the the housing part surrounding the opening is applied to the pressure glazing.
  • the electrical device according to the invention in particular electrical storage device or sensor housing, preferably battery, in particular microbattery or capacitor with a feedthrough through a housing part in the form of a sheet metal part, has a material thickness or thickness preferably in the range 0.1 mm to 1 mm, preferably 0.15 mm to 0.8 mm, in particular 0.15 mm to 0.6 mm.
  • the material used for the housing part or sheet metal part and / or conductor is a metal, in particular iron, iron alloys, iron-nickel alloys, iron-nickel-cobalt alloys, KOVAR, steel, stainless steel, aluminum, an aluminum alloy, AlSiC, Magnesium, a magnesium alloy, a copper alloy, copper or titanium or a titanium alloy is used.
  • the housing part has at least one opening as part of a bushing, the opening receiving a conductive material, in particular a conductor made of a conductive material in a glass or glass ceramic material.
  • a duplex stainless steel or austenitic stainless steel is used as a particularly preferred material for the housing part, in particular the sheet metal part.
  • Duplex stainless steel is a steel with a two-phase structure, which consists of a ferrite (a-iron) matrix with islands of austenite.
  • the duplex stainless steels combine the properties of stainless chromium steels (ferritic or martensitic) and stainless chromium-nickel steels (austenitic). They have higher strengths than stainless chrome-nickel steels, but are more ductile than stainless chrome steels.
  • the glass material is preferably a glass material with a coefficient of expansion a 2 in the range 9 to 11 * 10 6 1 / K.
  • the sheet metal part comprises a first area with the opening and a substantially thinner second area, adjacent to the first area with the opening.
  • a housing part in particular a sheet metal part
  • the glazing then takes place in the opening with a wall thickness which corresponds to the thickness Di of, for example, 0.6 mm.
  • the width W of the first area with a thickness Di around the opening is sufficient to build up the necessary prestressing of the metal on the glass material.
  • the width W of the annular area around the opening with the glass or glass ceramic material is 0.6 mm to 1 mm.
  • a thin sheet metal part with a thickness D 2 which is approximately 0.2 mm, for example, to include a collar, which is preferably a high-arched, shaped collar.
  • the stamping down from the thickness Di to the Thickness D 2 can be omitted; in such a case, the thickness Di would be substantially equal to the thickness D 2.
  • the housing part and collar are in one piece, but do not have to be.
  • the collar is not only pulled upwards and provides the glazing length EL, but that the collar comprises an indentation and / or a projection or bulge . Due to the projection and / or indentation, the raised collar corresponds to that of the sheet metal part even with a very thin wall thickness and the width W is only 0.2 mm, for example, for sufficient pretensioning for pressure glazing.
  • the stiffened shape of the collar with indentation / bulge then applies the necessary prestress to the glass or glass ceramic material.
  • the length of the inner wall which specifies the glazing length and is denoted by EL, is in the range from 0.3 mm to 1.0 mm, in particular from 0.3 mm to 0.5 mm, and is formed by the raised edge.
  • the glass-enclosed conductor is preferably a conductor made of ferritic stainless steel.
  • a Isolation element is arranged, which can in particular be made of plastic or glass or glass ceramic and in particular covers the end face of the collar or the sheet metal part.
  • a glass material protruding beyond the edge for example made of foaming glass, can also be provided.
  • the plane of the surface of the collar is preferably below the plane of the surface of the electrical conductor which is passed through the bushing. It is particularly preferred if the surface of the insulation element lies in a plane with the surface of the electrical conductor which is introduced into the opening of the bushing.
  • an electrical device in particular a storage device, is specified with a bushing that enables contact to be made with a conductor and provides as much installation space as possible inside the housing.
  • the device according to the invention is designed to be hermetically sealed and, in the event of mechanical and / or pressure loading, in particular in the area between contact and sealing material, has improved compatibility with the brittle sealing material.
  • the increase in the installation space can in particular contribute to increasing the capacity of the storage device.
  • the electrical device comprises a flexible flange or connects to a flexible flange.
  • the flexible flange preferably comprises a connection area which serves to connect the housing part, in particular a sheet metal part with an opening, to the conductor glazed in the glass or glass ceramic material with a housing, for example a housing of a storage device.
  • the connection of the housing part, which includes the bushing, to the housing can be carried out by welding, in particular laser welding, but also by soldering.
  • the connection, for example by welding, is such that the He leakage rate is less than 1 10 8 mbar l / s at a pressure difference of 1 bar. This means that the He leakage rate is identical to that for the Glazed conductor and a hermetically sealed housing for a storage device, in particular a battery, is made available.
  • the flexible flange Due to the free space in the flexible flange, which is formed, for example, between the raised edge that provides the glazing length EL and the connection area to the adjacent housing, pressures acting on the glass material can be reliably compensated.
  • the flexibility of the flange prevents the glass from breaking in the event of temperature fluctuations, for example, or compensates for tensile and compressive stresses caused by laser welding.
  • an austenitic stainless steel or a duplex stainless steel as the material of the flexible flange.
  • the austenitic stainless steel has a thermal expansion a in the range 16 to 18-10 6 K 1 or 16 to 18 ⁇ 10 6 1 / K, the duplex stainless steel in the range 13 to
  • the expansion coefficient of the glass material is preferably in the range 9 to 10-10 6 K 1 .
  • the expansion coefficient of ferritic steel is in the range 10 to 12-10 6 K 1 , so that ferritic steel is preferred for matched
  • Feedthroughs are used, since the expansion coefficient of the glass material and the material of the base body or of the ring enclosing the glass material can be selected to be essentially the same. Flanges made of austenitic and duplex stainless steel are preferred for pressure glazing, as these materials can be used to apply sufficient compressive stress even with only short glazing lengths.
  • the electrical storage device has an overall height of at most 40 mm, preferably at most 20 mm, particularly preferably at most 5 mm, in particular at most 4 mm, preferably at most 3 mm, in particular in the range 1 mm to 40 mm, particularly preferably 1 mm to 5 mm, preferably 1 mm to 3 mm, as in the case of microbatteries.
  • the diameter of such micro batteries is in the range 20 mm to 3 mm, in particular in the range 8 mm to 16 mm.
  • the glass or glass ceramic material can contain fillers, which serve in particular to adjust thermal expansion of the glass or glass ceramic material.
  • An aluminoborate glass with the main components Al2O3, B2O3, BaO and S1O2 is preferably used as the glass or glass ceramic material.
  • the expansion coefficient of such a glass material is preferably in the range 9.0 to 9.5 ppm / K or 9.0 to 9.5 * 10 6 1 / K and thus in the range of
  • Expansion coefficient of the metal that forms the housing and / or the metal pin is particularly advantageous when using stainless steel, in particular ferritic or austenitic stainless steel or duplex stainless steel. In such a case, the expansion coefficient of the stainless steel is similar to that of the aluminoborate glass.
  • the preload for the pressure glazing is essentially determined by the different expansion coefficients of the material of the housing part, in particular the sheet metal part.
  • the expansion coefficient a 3 of the housing or sheet metal part is 2 to 6 * 10 6 1 / K greater than the expansion coefficient a 2 of the glass material and / or the expansion coefficient CH of the conductor.
  • the housing part in particular the battery cover, comprises a collar
  • the collar provides the glazing length EL necessary for glazing.
  • the raised or lowered area is perpendicular to the first plane of the housing component.
  • a particularly stable glazing of the conductor is then possible, since in this way the contact area between the insulator and the housing component is enlarged.
  • the glazing length EL is preferably 0.3 mm to 1.0 mm, preferably approximately 0.6 mm.
  • the indentations / bulges with a width W which are necessary for applying the preload, can also be obtained very easily by reshaping the thin housing part or sheet metal part, e.g. by bending.
  • the raised or lowered area of the collar includes a flexible flange for connecting the bushing to a housing, e.g. a battery housing.
  • the flange itself comprises an area, a so-called connection area, with which the bushing is connected to the housing part.
  • the connection to the housing part can be done by welding, in particular ultrasonic welding or soldering.
  • the flexible flange can be obtained very easily.
  • a sheet metal part with a first thickness Di which is present around the opening , can be stamped down to the thickness D 2 and, after the stamping down, the section with the thickness D 2 , SO can be deformed so that the flexible flange is formed.
  • a sheet metal with a thickness D 2 can be formed into a flexible flange and for the raised sheet metal or the collar to accommodate the glazing. Glazing in a raised flexible flange, in particular the collar of the flexible flange, is possible above all if the flexible flange and the raised area comprise austenitic steel or duplex steel as the material.
  • the invention also provides a method for setting an electrical device, in particular an electrical storage device, in particular a battery or a capacitor.
  • the method for positioning an electrical device with a bushing comprises the following steps:
  • a sheet metal part with a material thickness or thickness Di is made available.
  • a conductor in a glass or glass ceramic material is inserted into the opening.
  • the sheet metal part is heated with the material inserted into the opening, so that pressure glazing of the conductor in the glass material or glass ceramic material is carried out.
  • the thickness Di of the sheet metal part into which glass is placed is between 0.4 mm and 1 mm, preferably 0.6 mm.
  • the thickness D 2 of the thin, embossed part is between 0.1 mm and 0.4 mm, preferably 0.2 mm.
  • a thin sheet metal part with a thickness D 2 related and around the opening a collar pulled up by forming in order to realize the necessary glazing length which is made available in the first embodiment of the invention by the thick sheet metal part of approximately 0.6 mm thickness.
  • a collar with an indentation and / or a bulge with a width W is provided. After the collar has been produced by reshaping, a conductor in a glass or glass ceramic material is inserted into the opening with the collar and the sheet metal part is heated with the material inserted into the opening so that the conductor is press-glazed into the glass or glass ceramic material.
  • Fig. 1b a cross section through a housing part according to Fig. 1a with a conductor glazed into the opening.
  • Battery cover with an opening for glazing in a conductor the sheet metal part comprising a collar which provides a wall around a conductor to be glazed into the opening with a collar.
  • FIG. 2b a cross section through a housing part according to FIG. 2a with a conductor glazed into the opening.
  • 3 a cross section through a housing part, in particular one
  • Battery cover with an opening for glazing a conductor, wherein the housing cover comprises a flexible flange.
  • FIG. 4 Detail of the housing part with flexible flange according to FIG. 3
  • FIG. 6 Housing part with a flexible flange according to FIG. 5, the necessary glazing length EL for, for example, ferritic stainless steel being specified.
  • Fig. 8 Micro battery with a housing part according to the invention or
  • Fig. 10a Conductors glazed into an opening in a housing part, in particular
  • Base body without meniscus of the glass or glass ceramic material to the housing part, in particular base body.
  • 10b Conductor, glazed into an opening in a housing part, in particular a base body with a meniscus of the glass or glass ceramic material to the housing part, in particular a base body.
  • Figure 1a is an inventive housing part or sheet metal part 1 as part of a
  • Housing in particular a housing of a storage device, for example a battery, in particular a micro-battery as shown in FIG. 8.
  • the sheet metal part comprises an opening 3 into which a conductor can be glazed in a glass material.
  • the glass-enclosed conductor is not shown in FIG. 1a.
  • the sheet metal part with inserted conductor is shown in FIG. 1b.
  • the thin section 5 of the sheet metal part with an opening 3 as part of the housing of a storage device is produced by stamping down the sheet metal part. This means that first of all a sheet with a sufficient wall thickness of, for example, 0.6 mm for glazing a conductor in a glass or glass ceramic material is made available. An opening is then made in the sheet metal part with sufficient wall thickness using a punching process.
  • the sheet metal part with a thickness or material thickness Di is reduced in thickness in the areas 5, for example by stamping down.
  • the thickness or the sheet metal part into which the glazing is made is, for example, 0.6 mm
  • the thickness of the embossed part of the sheet metal part is, for example, only 0.2 mm.
  • the thickness of the sheet metal in the area of the opening into which the glazing is made is denoted by Di.
  • the thickness Di corresponds to the length which is necessary for pressure glazing of a conductor in a glass or glass ceramic material, as shown in FIG. 1b. Due to the material thickness or thickness Di, a bias is applied to the glass or glass ceramic material and the glass or glass ceramic conductor glazed in the glass or glass ceramic material due to the different expansion coefficients of the sheet metal part or housing part and glass or glass ceramic material or conductor , so that pressure glazing of the conductor is provided.
  • the area with the thickness Di comprises a width W essentially perpendicular to the axis A of the opening 3.
  • the width W ensures that the metal ring surrounding the opening or the metal ring surrounding the opening provides the necessary preload the pressure glazing can apply.
  • the pressure glazing is characterized by the fact that the helium leak rate is less than 1 ⁇ 10 8 mbar / lsec at a pressure difference of 1 bar is.
  • the coefficient of expansion CH of the conductor and the coefficient of expansion a 2 of the glass material are different from the coefficient of expansion a 3 of the sheet metal part or housing material.
  • the expansion coefficient a 3 of the sheet metal part or housing part is approximately 2 to 8 ⁇ 10 6 1 / K greater than that
  • Expansion coefficient of the conductor or glass ceramic material is, for example, in the range 12 to 19 * 10 6 1 / K, that of the conductive material or the glass or glass ceramic in the range 9 to 11 ⁇ 10 6 1 / K.
  • the housing part is preferably made of a duplex stainless steel with an expansion coefficient of approximately 15 ⁇ 10 6 1 / K or of an austenitic material with an expansion coefficient of approximately 18 ⁇ 10 6
  • pressure glazing is also provided with a very thin sheet metal wall thickness and a glazing length of only 0.6 mm.
  • the ring with the thickness D-i, which surrounds the opening, provides sufficient pretensioning for pressure glazing.
  • connection with the rest of the housing part of a battery housing takes place in the area of the thin sheet metal part with the thickness D 2 by a projection 7 made in the thin sheet metal part, for example with the aid of a welded connection.
  • FIG. 1 b shows a housing part according to FIG. 1 a with a glazing ring 9 with the thickness Di and a conductor 20 glazed in the glazing ring 9.
  • the glass material that receives the conductor 20 is identified by reference number 22.
  • the thickness of the stamped-down sheet metal part 5 outside the glazing ring is D 2 .
  • the glass ring has a width W, which is used to apply the necessary compression pressure for pressure glazing. In a further embodiment it can be provided that the thickness D 2 corresponds to the thickness Di.
  • the sheet metal used generally has a thickness D 2 and the edge 30 necessary for glazing in the area of the opening 3 is not provided by a solid sheet metal part , but by pulling up or deep drawing an edge 40 of the thin sheet metal part 5, as shown in FIGS. 2a and 2b.
  • the raised edge 40 is then in the form of a collar.
  • the conductor 20 is glazed in a glass material 22 in the raised collar 40.
  • the collar 40 comprises an indentation 42 and a bulge 44.
  • the indentation provides a certain flexibility to avoid glass breakage, the bulge has a width W essentially to the axis A, which ensures that a sufficient preload is applied by the housing part will.
  • the width W is approximately 0.6 mm in the exemplary embodiment described.
  • the advantage of the method according to FIGS. 2a and 2b compared to the method according to FIGS. 1a and 1b is that it is not necessary to stamp down the sheet, but rather the sheet with a continuous sheet thickness D 2 only has to be reshaped so that the collar 40 has a height which corresponds to the glazing length EL and the indentations 42 and bulges 44 is formed.
  • the glazing length EL is, for example, 0.6 mm and thus corresponds to the thickness Di of the embodiments according to FIGS. 1a and 1b.
  • the raised collar 40 with bulges 44 according to FIGS. 2a and 2b provides sufficient prestress for a Pressure glazing is provided on the conductor 20.
  • the version according to the invention according to FIGS. 2a and 2b is distinguished by a very thin wall thickness D 2 .
  • the extrusion force of the conductor 20 is determined by the prestress due to the bulge 44 with width W which is applied to the glass by the sheet metal part or housing part.
  • the housing part for an electrical storage device comprises a flexible flange 310.
  • the flange 310 comprises a connection area 380 which serves to connect the leadthrough or the housing part or the battery part 1 with opening 3 with the conductor glazed into the glass or glass ceramic material with a housing, for example a housing of a storage device as shown in FIG. 5 , connect to.
  • the sheet metal part with the opening can be connected to the housing by welding, in particular laser welding, but also by soldering.
  • the connection is such that the He leak rate is less than 1 ⁇ 10 8 mbar l / s at 1 bar
  • the He leakage rate is thus identical to that for the glass-enclosed conductor and a hermetically sealed housing for a storage device, in particular a battery, is made available. Due to the free space F, which between the raised area, i.e. the edge 300, which is to be equated with the raised collar according to the embodiment according to Figs
  • Glazing length EL is available and the connection area 380 is formed, pressures acting on the glass material can be reliably compensated.
  • the flexibility of the flange 310 prevents the glass from breaking, for example in the event of temperature fluctuations.
  • the flexibility of the flange 310 avoids any tensile and compressive stress that eg caused by laser welding. In this way, tensile and compressive stresses can be cushioned.
  • the glazing length EL is provided in the present case by a sheet metal part with a thickness D 2 of, for example, 0.2 mm and width W, which is stamped down as in FIGS. 1a and 1b and then shaped into a flexible flange.
  • the glazing takes place in the opening 3 of the housing part, the area of the housing part which applies the pretension to the glass material is denoted by 300.
  • the width W of the flexible flange is used to provide the prestress that is applied to the glass material. As shown in FIG. 3, the width W of the flexible flange extends beyond the wall thickness of the sheet metal section into which the glazing takes place up to the area of the flexible flange.
  • the housing part preferably the sheet metal part, is in particular part of a housing of an electrical storage device, in particular a battery cover.
  • the illustrated housing part 1 is laser welded to the rest of the housing at the tip 302 of the flexible flange 380.
  • the thickness of the flange is weakened and is only 0.15 mm instead of, for example, 0.2 mm for the sheet metal part.
  • the flange 380, weakened in the area of the tip 302, of the housing part with the opening or the leadthrough can be connected directly to the rest of the housing of the electrical storage device by laser welding, resulting in the electrical storage device.
  • the laser welding heats the entire component, including the glass or glass ceramic material.
  • the housing of the storage device comprises a housing part with an opening or a bushing according to the invention. Since the bushing or the housing part with opening is very compact due to the very thin material thickness D 2 of only 0.1 mm to 1 mm of the housing part or battery cover, when installing such a sheet metal part as part of a bushing in a battery housing, for example Welding in the area of the tip 302 of the flexible flange to the rest of the housing of the storage device provides a very compact storage device, in particular a microbattery.
  • FIG. 4 shows the flexible flange 380 in detail.
  • the same components as in FIG. 3 are given the same reference numerals.
  • it is not the width W of the flexible flange as shown in FIG. 3, but the thickness D E , that is to say the wall thickness of the sheet metal section into which the glazing takes place.
  • the wall thickness D E can be compared with the sheet metal thickness D 2 of the second section; here too, according to the invention, the width W is greater than the wall thickness D E.
  • FIG. 5 shows an embodiment of an embodiment of the invention with a flexible flange 1380, the flexible flange 1380 having the same wall thickness as the sheet metal part, namely D 2 .
  • the flexible flange 1380 is obtained by bending the sheet with the thickness D 2 .
  • the flexible flange comprises a collar, which is also formed by bending, in which the glazing takes place.
  • the width W extends from the area of the ring in which the glass material 22 is glazed into the area of the flexible flange 1380, analogous to FIG the pre-tensioning, especially in the case of thin wall thicknesses of the sheet metal section in which the glazing is carried out, is not sufficient to provide reliable pressure glazing, since in such a case the pre-tensioning is not sufficient.
  • a wall thickness D a nd over the entire glazing length EL would be necessary, as shown in FIG. 6, which essentially corresponds to the width W.
  • This large ring wall thickness of the metal ring is required in order to be able to exert permanent pre-tension on the glass.
  • the wall thickness D a nd is significantly greater than the sheet metal thickness D 2.
  • the steel in particular normal steel, has an expansion coefficient in the range from 12 to 13 * 10 6 K 1 .
  • substantially sheet thickness D 2 corresponds to the sheet metal part as shown in Fig. 7.
  • the same components as in FIGS. 5 and 6 are identified by the same reference numerals.
  • the width W of the area which exerts the pressure on the glass material is shown in both FIG. 5 and FIG. 6 and extends in the area of the flexible flange.
  • the disadvantage is that cracks occur in the glass material due to the high pressure of the austenitic material in the report of the pressure glazing, which, as shown in FIG. 6, is a high glazing.
  • the pressing force of the pin or conductor can be influenced via the different glass pre-stresses that also act on the pin or conductor via the glass.
  • a safety vent function of the pin or conductor ie an opening of the battery in the event of overpressure in the battery, can be set in the event of damage.
  • Further control options for influencing the opening force of the glazed pin or conductor would be to change the thickness of the glazing, the use of different glass materials, the use of glass materials with different proportions of bubbles in the glass, the structuring of the glass surface through the shape of the molded glass part before the glazing, Structuring the glass surface through the shape of the molded glass part during glazing, structuring the glass surface through laser processing after glazing.
  • the glass surface can be structured, for example, by introducing one or more notches and / or tapers.
  • Such a safety vent function can also be achieved by means of notches and / or tapering of the glazed pin and / or the base body.
  • the aforementioned measures can be carried out individually or in combination.
  • the structuring, in particular the notches and / or tapers, can be introduced both on one side of the housing part or base body with an upper and lower side in the glass, housing part and / or conductor, or on both sides, ie. H. both on the top and the bottom, i.e. H. both sides.
  • the advantage of structuring the glass material for a safety vent function is that the glass as a molded body is precisely dimensioned so that the trigger point of the safety vent function can be set very precisely. It is particularly preferred if, for the safety vent function, a groove, for example, is made in the glass material by means of a laser. It is then possible, independently of the glass density and / or the thickness of the base body, that is to say the ring thickness, to specifically set an expressive power for the conductor and thus the trigger point.
  • the pressing force or expressiveness for the conductor can also be influenced by the length of the glazing and / or the formation of menisci.
  • opening of a storage device, in particular a battery can be set in the event of damage in the event of excess pressure.
  • the extrusion force and thus the safety vent function of the conductor can be adjusted using one or more of the measures described below:
  • FIG. 8 shows an electrical device according to the invention, in particular a microbattery with a bushing or housing part according to the invention with an opening.
  • the electrical device or microbattery is denoted by 10000, the bushing or the housing part with opening 1 is designed as in FIGS. 3 and 4.
  • the same components of the implementation as in FIG. 3 and FIG. 4 are identified in FIG. 5 with the same reference numerals.
  • the battery cover with the sheet metal part 1 and flexible flange like. 3 and 4, as part of the bushing in the area 1504 with a weakened protrusion 10001, is tightly connected to the remaining flange 10001 of the housing of the electrical device or the microbattery by welding, in particular laser welding.
  • a terminal lug 1400 is connected to the glazed conductor 20.
  • the battery formed in the housing 10010 is electrically connected via the connection lug 1400, which protrudes into the housing 10010.
  • the pressure-tight connection of the housing cover with the opening 3 as part of the bushing with the rest of the battery housing, which is designed in a cylindrical shape and directly adjoins the bushing, can be done by welding.
  • the welding is preferably carried out between the sheet metal part with an opening as part of the leadthrough and the preferably cylindrical housing part that accommodates the battery in the region of the tip 1504 of the sheet metal part.
  • the height of the area welded to the tip 1504 is at most 5 mm, preferably at most 3 mm, in particular it is in the range from 1 mm to 5 mm and determines the overall height of the microbattery.
  • Pressure-tight means that the He leak rate is less than 10 8 mbar l / sec at a pressure difference of 1 bar. Due to the flexible flange, which is also formed as in FIGS. 3 and 4, sufficient elasticity is achieved even after the bushing is welded in the housing or with the rest of the housing part and the temperature effect resulting therefrom.
  • the bushing shown in FIG. 5 comprises an isolation ring 10030, for example made of a glass material, which covers the glazing 22 and the flexible flange made of metal.
  • the height of the entire microbattery is a maximum of 5 mm, preferably a maximum of 3 mm, in particular it is in the range 1 mm-5 mm.
  • the dimensions in the area of the sheet metal part as part of the passage with a flexible flange according to FIGS. 3 and 4 are as follows.
  • the diameter of the conductor 20 is 1 mm to 2 mm, preferably 1.5 mm.
  • the diameter of the opening 3 is in the range 1 mm to 4 mm, preferably 2.5 mm to 3.0 mm.
  • insulation between the connection lug 1400 and the sheet metal part of the bushing is achieved by the insulation ring 10030.
  • a foaming glass can be used in addition to an insulation ring.
  • the area covered by the glass material for insulation is 0.2 mm.
  • the width of the entire sheet metal part as part of the implementation that is introduced into the housing is between 4.0 mm and 6.0 mm, preferably 4.5 mm.
  • the embodiment according to FIG. 5 is characterized in that a surface of a partial area 1052 of the housing part is covered by an inorganic material, in particular a glass material or a glass ceramic material, in order to provide electrical insulation for, for example, a 1400 contact tab with respect to the housing when the bushing is introduced to deliver.
  • FIG. 8 shows the contacting of a conductor lying in the microbattery by means of a curved connection lug 1400
  • FIG. 9a shows a conductor with an external connection.
  • the conductor 20 comprises a head or connection head 20000 arranged on the conductor and made of a metallic material, preferably the same material as the conductor.
  • the head is preferably round with a diameter in the range 8 to 15 mm.
  • the diameter of the conductor, which is usually round, is in the range from 4 mm to 8 mm.
  • the diameter of the opening is 6 mm to 10 mm.
  • the glass-enclosed conductor 20 is connected to an electrical device (not shown) with the connection head 20000 made of a metallic material.
  • the conductor and the connection head 20000 are in one piece, i. H. the connection head can be obtained by stretching while embossing.
  • an insulating element in particular an insulating washer 20010, is preferably made of a glass or glass ceramic material, a ceramic or a non-conductive organic material , intended.
  • FIG. 9b again shows a housing part with a glazing ring 10 and a glazed conductor 20 with a connection head 20000 and an insulating washer 20010. It can be clearly seen that the insulating washer 20010 extends to the conductor 20 and electrically isolates the entire connection head 20000 from the glazing ring 10.
  • FIG. 9c shows a plan view of the glazing ring 10 in a round shape with a glass-enclosed conductor with a connection head 20000. As can be seen from FIG. 9c, the connection head 20000 covers between 60% and 90%, preferably 70% to 85%, of the area of the opening of the glazing ring 10.
  • the glazing ring 10 is equivalent to the previously described housing part with an opening, ie the The glazing ring has a coefficient of expansion a 3 , which is always greater than the coefficient of expansion a 2 of the glass material.
  • the glazing ring 10 can also be referred to as the base body into which the glazing takes place.
  • FIGS. 10a to 10b show in detail the glazing of a conductor 20 in an opening 3 of a housing part, in particular a base body, preferably a glazing ring 9, as shown in FIG. 1b.
  • the glazing according to FIG. 10a the glazing took place over a longer length than in FIG. 10b, so that no meniscus is formed from the glass or glass ceramic material to the housing part, in particular the base body, preferably the glazing ring 9.
  • the design of the glazing without meniscus means that practically no breaks occur in the glass material. Furthermore, a high pull-out force of the inserted conductor is made available.
  • FIG. 10b shows an embodiment of the invention in which a meniscus is formed in the glass material for the housing part or base body or glazing ring 9.
  • the meniscus is designated by reference number 30000, the glass or glass ceramic material by reference number 22.
  • the meniscus is formed because the glazing length is short compared to FIG. 9a.
  • the number of fractures increases compared to the case where no meniscus is formed in the glass material.
  • the pull-out strength of the glazed metal pin, in particular the conductor is greatly reduced compared to glazing without a meniscus.
  • the implementation according to the invention is used in particular for housings for electrical storage devices, in particular batteries or capacitors.
  • electrical storage devices in particular batteries or capacitors.
  • With the very flat bushing according to the invention for an electrical storage device it is achieved that an electrical storage device can be made available with a total structural height of at most 5 mm.
  • the pressure-sealing of the conductor in the glass material provides a hermetically sealed leadthrough.
  • a higher pin or conductor extrusion force is achieved, especially when using duplex stainless steel or austenitic steel.
  • the flexible flange design as pressure glazing is also mechanically more resilient and shows higher extrusion forces for the glazed conductor than conventional glazing.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

Dispositif électrique, en particulier dispositif de stockage électrique ou boîtier de capteur, de préférence une batterie, en particulier une micro-batterie ou un condensateur, présentant une traversée, en particulier à travers une partie de boîtier d'un boîtier du dispositif constitué d'un métal, en particulier du fer, des alliages de fer, des alliages de fer-nickel, des alliages de fer-nickel-cobalt, du KOVAR, de l'acier, de l'acier inoxydable, de l'acier inoxydable, de l'aluminium, un alliage d'aluminium, de l'AlSIC, du magnésium, un alliage de magnésium ou du titane ou un alliage de titane, la partie de boîtier présentant au moins une ouverture en tant que partie de la traversée, l'ouverture s'étendant autour d'un axe et une première région de la partie de boîtier comprenant l'ouverture et une deuxième région de la partie de boîtier étant adjacente à l'ouverture et l'ouverture recevant un matériau conducteur, en particulier un conducteur dans un matériau en verre ou en vitrocéramique. L'invention est caractérisée en ce que la première région de la partie de boîtier présente une largeur W sensiblement perpendiculaire à l'axe de l'ouverture et la largeur W de la première région est toujours supérieure à l'épaisseur D, D de la seconde région et du matériau conducteur présente un premier coefficient de dilatation α1, et le matériau en verre ou en vitrocéramique présente un deuxième coefficient de dilatation α2 et la partie de boîtier a un troisième coefficient de dilatation α3, le troisième coefficient de dilatation α3 étant toujours supérieur au deuxième coefficient de dilatation α2.
EP21712068.2A 2020-03-17 2021-03-10 Dispositif électrique, en particulier micro-batterie, et son procédé de production Pending EP4121994A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020107224.4A DE102020107224A1 (de) 2020-03-17 2020-03-17 Elektrische Einrichtung
DE202020106518.1U DE202020106518U1 (de) 2020-03-17 2020-11-13 Elektrische Einrichtung
PCT/EP2021/056011 WO2021185648A1 (fr) 2020-03-17 2021-03-10 Dispositif électrique, en particulier micro-batterie, et son procédé de production

Publications (1)

Publication Number Publication Date
EP4121994A1 true EP4121994A1 (fr) 2023-01-25

Family

ID=76753899

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21712069.0A Pending EP4121993A1 (fr) 2020-03-17 2021-03-10 Partie de boîtier, en particulier micro-batterie et procédé de production d'une partie de boîtier
EP21712068.2A Pending EP4121994A1 (fr) 2020-03-17 2021-03-10 Dispositif électrique, en particulier micro-batterie, et son procédé de production

Family Applications Before (1)

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EP21712069.0A Pending EP4121993A1 (fr) 2020-03-17 2021-03-10 Partie de boîtier, en particulier micro-batterie et procédé de production d'une partie de boîtier

Country Status (7)

Country Link
US (2) US20230014877A1 (fr)
EP (2) EP4121993A1 (fr)
JP (2) JP2023520176A (fr)
KR (2) KR20220154593A (fr)
CN (2) CN115298782A (fr)
DE (2) DE102020107224A1 (fr)
WO (2) WO2021185649A1 (fr)

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DE102022101390A1 (de) 2022-01-21 2023-07-27 Schott Ag Elektrische Durchführung und Energiespeicher mit einer solchen Durchführung

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KR20220154593A (ko) 2022-11-22
US20230014877A1 (en) 2023-01-19
KR20220152235A (ko) 2022-11-15
EP4121993A1 (fr) 2023-01-25
CN115298782A (zh) 2022-11-04
JP2023520175A (ja) 2023-05-16
US20230021960A1 (en) 2023-01-26
WO2021185648A1 (fr) 2021-09-23
DE102020107224A1 (de) 2021-09-23
CN115315767A (zh) 2022-11-08
JP2023520176A (ja) 2023-05-16
DE202020106518U1 (de) 2021-06-22
WO2021185649A1 (fr) 2021-09-23

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