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DE10147565A1 - Device for gas and liquid-tight sealing of the housing of galvanic elements - Google Patents

Device for gas and liquid-tight sealing of the housing of galvanic elements

Info

Publication number
DE10147565A1
DE10147565A1 DE10147565A DE10147565A DE10147565A1 DE 10147565 A1 DE10147565 A1 DE 10147565A1 DE 10147565 A DE10147565 A DE 10147565A DE 10147565 A DE10147565 A DE 10147565A DE 10147565 A1 DE10147565 A1 DE 10147565A1
Authority
DE
Germany
Prior art keywords
sonotrode
housing
gas
liquid
galvanic elements
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.)
Withdrawn
Application number
DE10147565A
Other languages
German (de)
Inventor
Johannes Maier
Markus Kohlberger
Joachim Knecht
Stefan Fuerst
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.)
VARTA Microbattery GmbH
Original Assignee
VARTA Microbattery GmbH
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 VARTA Microbattery GmbH filed Critical VARTA Microbattery GmbH
Priority to DE10147565A priority Critical patent/DE10147565A1/en
Priority to FR0211721A priority patent/FR2829963B1/en
Priority to JP2002281851A priority patent/JP2003181929A/en
Publication of DE10147565A1 publication Critical patent/DE10147565A1/en
Withdrawn legal-status Critical Current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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7373—Joining soiled or oxidised materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/328—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect
    • B29C66/3282—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect for reinforcing the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30221—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being point-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • B29L2031/3061—Number plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3468—Batteries, accumulators or fuel 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
    • H01M10/34—Gastight accumulators
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Package Closures (AREA)

Abstract

Eine Vorrichtung zum gas- und flüssigkeitsdichten Versiegeln der Gehäuse von galvanischen Elementen, die die Form einer dünnen Flachzelle besitzen, durch Ultraschallverschweißung von Kunststoffschichten der Gehäusebauteile, enthält einen Amboss (1), der als Auflage der zu verbindenden Teile dient, dem eine zur Ultraschallverschweißung dienende Sonotrode (2) gegenübersteht, wobei die Oberfläche von Sonotrode (2) oder Amboss (1) im Siegelungsbereich mit einer Erhöhung (7) umgeben von einer ebenen Fläche (8) versehen ist.A device for gas and liquid-tight sealing of the housing of galvanic elements, which have the shape of a thin flat cell, by ultrasonic welding of plastic layers of the housing components, contains an anvil (1), which serves as a support for the parts to be connected, one of which is used for ultrasonic welding Sonotrode (2) faces, the surface of the sonotrode (2) or anvil (1) in the sealing area being provided with an elevation (7) surrounded by a flat surface (8).

Description

Gegenstand der Erfindung ist eine Vorrichtung zum gas- und flüssigkeitsdichten Versiegeln der Gehäuse von galvanischen Elementen, die die Form einer dünnen Flachzelle besitzen, durch Ultraschallverschweißung von Kunststoffschichten der Gehäusebauteile. The invention relates to a device for gas and liquid-tight sealing the Housing of galvanic elements, which have the shape of a thin flat cell, by Ultrasonic welding of plastic layers of the housing components.

Galvanische Elemente in Form von dünnen und flachen Zellen sind bekannt und beispielweise dem Dokument EP 862 227 A1 zu entnehmen. Bei derartigen Zellen sind positive und negative Elektrode unter Zwischenlage von Separatoren, beispielsweise zwischen zwei als Gehäusebauteile dienenden Kunststofffolien, angeordnet, die gas- und flüssigkeitsdicht miteinander verbunden werden. Die die Gehäusebauteile bildenden Folien können auch metallisierte Kunststofffolien sein oder Metallfolien, beispielsweise Kupferfolien, die an den zum Inneren der Zelle weisenden Randbereichen mit einem Kunststoffmaterial beschichtet sind, welches nach dem Zusammenbau verschweißt wird. Galvanic elements in the form of thin and flat cells are known and for example can be found in document EP 862 227 A1. Such cells are positive and negative Electrode with the interposition of separators, for example between two as Housing components serving plastic films, arranged, the gas and liquid tight be connected to each other. The foils forming the housing components can also be metallized plastic films or metal foils, for example copper foils, which are attached to the Edge areas facing the cell are coated with a plastic material, which is welded after assembly.

Zur Verbindung dieser Gehäusebauteile dient oft ein Schweißverfahren, bei dem die Bauteile auf einem zu einer Sonotrode ausgerichteten Amboss fixiert werden und dann mittels Ultraschall miteinander verschweißt werden. A welding process in which the components are used is often used to connect these housing components are fixed on an anvil aligned to a sonotrode and then by means of Ultrasonically welded together.

Aufgabe der Erfindung ist es, diese Ultraschallverschweißung auch bei sehr dünnen galvanischen Elementen zuverlässig zu gewährleisten. The object of the invention is this ultrasonic welding even with very thin to ensure galvanic elements reliably.

Diese Aufgabe wird erfindungsgemäß bei der eingangs genannten Vorrichtung durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. This object is achieved by the device mentioned at the outset by characterizing features of claim 1 solved.

Im Folgenden ist der Gegenstand der Erfindung anhand der Figuren näher dargestellt. The subject matter of the invention is illustrated in more detail below with the aid of the figures.

Fig. 1 zeigt einen Querschnitt durch eine Vorrichtung mit einer herkömmlichen Sonotrode. Fig. 2 zeigt eine Vorrichtung mit der erfindungsgemäßen Sonotrode. Fig. 1 shows a cross section through a device with a conventional sonotrode. Fig. 2 shows an apparatus according to the invention with the sonotrode.

Die zur Verschweißung von Kunststofffolien verwendeten herkömmlichen Vorrichtungen bestehen aus einem Amboss 1, und einer gegenüberliegenden Sonotrode 2. Das zu verschweißende Objekt besteht aus einer unteren Siegelfolie 3 und einer oberen Siegelfolie 4. Während des Schweißprozesses wird die gerundete Sonotrode 2 auf die obere Folie 4 gedrückt, die unter gleichzeitigem Einwirken von Ultraschall mit der unteren Folie 3 verschweißt wird. Der Energieherd, der die Folienmaterialien schmilzt ist mit 9 bezeichnet. Dabei entsteht ein Fluss von geschmolzenem Material 5 von der Sonotrode weg. Dieser Fluss wirft durch Staubildung eine Wulst 6 auf. Diese Wulst verändert die äußere Kontur der Folie, indem sich eine Erhöhung ausbildet. Für manche Anwendungen ist diese Wulst unerwünscht. The conventional devices used for welding plastic films consist of an anvil 1 and an opposing sonotrode 2 . The object to be welded consists of a lower sealing film 3 and an upper sealing film 4 . During the welding process, the rounded sonotrode 2 is pressed onto the upper film 4 , which is welded to the lower film 3 with the simultaneous action of ultrasound. The energy source that melts the film materials is designated 9. This creates a flow of molten material 5 away from the sonotrode. This river creates a bulge 6 due to the formation of jams. This bead changes the outer contour of the film by forming an elevation. This bead is undesirable for some applications.

Erfindungsgemäß ist die in Fig. 2 dargestellte Sonotrode 2 mit einer zentrischen erhabenen Kontur 7 versehen, die umgeben von einer ebenen Kontur 8 ist. Diese Erhöhung wirkt als Energieweiser, so dass die Energie des Ultraschalls gezielt nur an der umlaufenden Linie wirkt. Der dadurch entstehende Energieherd 9 schmilzt die Folienmaterialien 3, 4 tief auf und bewirkt ein Verdrängen der Schmelze 5. Mit der Verdrängung der Schmelze wird gleichzeitig auf der Oberfläche der Siegelfolien befindlicher Schmutz bzw. Elektrolyt verdrängt. Die verdrängte Schmelze 5 bildet beidseitig neben dem Energieherd 9 Dichtkeile aus, so dass keine verschmutzte Oberfläche als Trennschicht bestehen bleibt, da der Schmutz mit der Schmelze durchgemischt wird. Die ebenen Seitenflächen 8 neben der runden Erhöhung 7 der Sonotrode 2 ebnen den Dichtkeil ein damit kein überstehender Wulst entsteht. Es ist auch möglich, die aus Erhöhung 7 und ebener Fläche 8 bestehende Kontur auf dem Amboss 1 anzubringen und eine ebene Sonotrode 2 vorzusehen. According to the invention, the sonotrode 2 shown in FIG. 2 is provided with a central raised contour 7, which is surrounded by a flat contour 8. This increase acts as an energy indicator, so that the energy of the ultrasound only acts on the circumferential line. The resulting energy source 9 melts the film materials 3 , 4 deeply and causes the melt 5 to be displaced. With the displacement of the melt, dirt or electrolyte located on the surface of the sealing foils is simultaneously displaced. The displaced melt 5 forms sealing wedges on both sides next to the energy source 9 , so that no soiled surface remains as a separating layer, since the dirt is mixed with the melt. The flat side surfaces 8 next to the round elevation 7 of the sonotrode 2 level the sealing wedge so that there is no protruding bead. It is also possible to apply the contour consisting of elevation 7 and flat surface 8 to anvil 1 and to provide a flat sonotrode 2 .

Da die Siegelung am Energieherd sehr tief und fest ist, wird ein maximales Siegelresultat gewährleistet, wobei keine erhöhte Wulst entsteht. Since the seal on the energy source is very deep and firm, a maximum sealing result is achieved guaranteed, with no raised bead.

Die erfindungsgemäße Vorrichtung ermöglicht das präzise Verschweißen von sehr dünnen Teilen, wie zum Beispiel das Versiegeln von Lithium-Flachzellen, die für elektronische Chipkarten vorgesehen sind und beispielsweise nur eine Dicke von 0,4 mm besitzen. The device according to the invention enables precise welding of very thin ones Parts, such as sealing lithium flat cells, used for electronic Chip cards are provided and for example only have a thickness of 0.4 mm.

Claims (1)

Vorrichtung zum gas- und flüssigkeitsdichten Versiegeln der Gehäuse von galvanischen Elementen, die die Form einer dünnen Flachzelle besitzen, durch Ultraschallverschweißung von Kunststoffschichten der Gehäusebauteile, die einen Amboss enthält, der als Auflage der zu verbindenden Teile dient, dem eine zur Ultraschallverschweißung dienende Sonotrode gegenübersteht, dadurch gekennzeichnet, dass die Oberfläche von Sonotrode (2) oder Amboss (1) im Siegelungsbereich mit einer Erhöhung (7) umgeben von einer ebenen Fläche (8) versehen ist. Device for the gas and liquid-tight sealing of the housings of galvanic elements, which have the shape of a thin flat cell, by ultrasonic welding of plastic layers of the housing components, which contains an anvil, which serves as a support for the parts to be connected, which is opposed by a sonotrode used for ultrasonic welding, characterized in that the surface of the sonotrode ( 2 ) or anvil ( 1 ) in the sealing area is provided with an elevation ( 7 ) surrounded by a flat surface ( 8 ).
DE10147565A 2001-09-26 2001-09-26 Device for gas and liquid-tight sealing of the housing of galvanic elements Withdrawn DE10147565A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10147565A DE10147565A1 (en) 2001-09-26 2001-09-26 Device for gas and liquid-tight sealing of the housing of galvanic elements
FR0211721A FR2829963B1 (en) 2001-09-26 2002-09-23 DEVICE FOR SEALING A BOX OF GALVANIC ELEMENTS IN A GAS AND LIQUID TIGHT MANNER
JP2002281851A JP2003181929A (en) 2001-09-26 2002-09-26 Apparatus for sealing casing of galvanic battery in airtight and liquidtight manner

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DE10147565A DE10147565A1 (en) 2001-09-26 2001-09-26 Device for gas and liquid-tight sealing of the housing of galvanic elements

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US7375497B2 (en) 2004-04-06 2008-05-20 Cobasys, Llc State of charge tracking system for battery systems
US7453238B2 (en) 2004-04-06 2008-11-18 Cobasys, Llc State of charge tracking system for battery systems based on relaxation voltage
US7541781B2 (en) 2005-01-17 2009-06-02 Cobasys, Llc Method and apparatus for charging and discharging a rechargeable battery
US7554295B2 (en) 2004-04-06 2009-06-30 Cobasys, Llc Determination of IR-free voltage in hybrid vehicle applications
US7570024B2 (en) 2004-04-06 2009-08-04 Cobasys, Llc Battery state of charge voltage hysteresis estimator
EP2308668A1 (en) 2009-10-07 2011-04-13 Robert Bosch Packaging Technology B.V. Device for ultrasonic welding of at least two plastic foil layers
US8427109B2 (en) 2004-04-06 2013-04-23 Chevron Technology Ventures Llc Battery state of charge reset
US8878539B2 (en) 2004-04-06 2014-11-04 Robert Bosch Gmbh State of charge tracking system for battery systems based on relaxation voltage

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US7375497B2 (en) 2004-04-06 2008-05-20 Cobasys, Llc State of charge tracking system for battery systems
US7453238B2 (en) 2004-04-06 2008-11-18 Cobasys, Llc State of charge tracking system for battery systems based on relaxation voltage
US7554295B2 (en) 2004-04-06 2009-06-30 Cobasys, Llc Determination of IR-free voltage in hybrid vehicle applications
US7570024B2 (en) 2004-04-06 2009-08-04 Cobasys, Llc Battery state of charge voltage hysteresis estimator
US8427109B2 (en) 2004-04-06 2013-04-23 Chevron Technology Ventures Llc Battery state of charge reset
US8878539B2 (en) 2004-04-06 2014-11-04 Robert Bosch Gmbh State of charge tracking system for battery systems based on relaxation voltage
US7209841B2 (en) 2004-11-15 2007-04-24 Cobasys, Llc Maximum and minimum power limit calculator for batteries and battery subpacks
US7333902B2 (en) 2004-11-15 2008-02-19 Cobasys, Llc Maximum and minimum power limit calculator for batteries and battery subpacks
US7541781B2 (en) 2005-01-17 2009-06-02 Cobasys, Llc Method and apparatus for charging and discharging a rechargeable battery
EP2308668A1 (en) 2009-10-07 2011-04-13 Robert Bosch Packaging Technology B.V. Device for ultrasonic welding of at least two plastic foil layers

Also Published As

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FR2829963B1 (en) 2005-05-27
FR2829963A1 (en) 2003-03-28
JP2003181929A (en) 2003-07-03

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