DK150050B

DK150050B - GALVANIC PRIMARY ELEMENT

Info

Publication number: DK150050B
Application number: DK114177AA
Authority: DK
Inventors: Werner Riedl
Original assignee: Varta Batterie
Priority date: 1976-04-30
Filing date: 1977-03-16
Publication date: 1986-11-24
Also published as: ATA16677A; CA1078454A; ES226638U; GR70656B; IL51932A; DE2619178A1; NL7704313A; AT354537B; IL51932A0; NZ183968A; ES226638Y; GB1517137A; BE852166A; ZA772578B; DK150050C; SE433415B; CS202566B2; MX142922A; HK26079A; IN148587B

Description

i 150050in 150050

Opfindelsen angår et galvanisk primærelement med et cylindrisk cellebæger, der er lukket af et platstætningselement, idet cellebægerets rand er bertlet, og den bertlede rand indgriber i indersiden af plasttætningselementet, og den bertlede rands βίε slutning selvlukkende er anbragt ved en ansats på tætningselementet.The invention relates to a galvanic primary element having a cylindrical cell cup closed by a plate sealing element, the rim of the cell cup being bare and the curved edge engaging in the inside of the plastic sealing element, and the end of the tufted edge self-closing at a stop member.

Ved primærelementer, hvor den negative afleder udgøres af cellebægeret, kendes forskellige konstruktioner, hvor et tætnings-10 element af plast presses ind i cellebægeret som en prop. Disse plasttætningselementer optager en forholdsvis stor del af cellevolumenet, der derved ikke vil kunne udnyttes til aktivt elektrodemateriale. Derudover er disse plasttætninger ikke tilstrækkeligt elastiske ved overtryk. De giver derved anled-15 ning til utilladelige udvidelser i længderetningen. Ved et pludseligt overtryk i elementet eksempelvis ved en forkert forbindelse af elementet, kan sådanne tætninger presses ud af cellebægeret. Dette kan til dels undgås, hvis plasttstningen kun delvis indgriber i det bukkede cellebæger og tætnes ved 20 hjælp af en overliggende rand - jf. f.eks. tysk patenskrift nr. 2.238.406, der omtaler et tætningselement med en indadvendt elastisk flange.In primary elements in which the negative diverter is made up of the cell cup, various constructions are known in which a plastic sealing element is pressed into the cell cup as a plug. These plastic sealing elements occupy a relatively large portion of the cell volume which will thereby not be utilized for active electrode material. In addition, these plastic seals are not sufficiently elastic for overpressure. They thereby give rise to unacceptable longitudinal extensions. By a sudden overpressure in the element, for example by incorrect connection of the element, such seals can be pressed out of the cell cup. This can be partly avoided if the plastic sting only partially engages the bent cell cup and is sealed by means of an overlying edge - cf. German Patent Specification No. 2,238,406, which discloses a sealing member with an inward-facing elastic flange.

Fra dansk patentskrift nr. 120.647 kendes et galvanisk ele-25 ment, hvor cellebægeret rand er bertlet ca. 60°. Der vil derfor kunne opstå mindre utætheder i tilfælde af en mindre forskydning i længderetningen.From Danish Patent Specification No. 120,647, a galvanic element is known in which the cell-walled edge is bristled approx. 60 °. Therefore, minor leaks may occur in the event of a smaller longitudinal displacement.

Endvidere kendes fra US-patentskrift nr. 3.802.923 et galva-30 nisk element, hvor cellebægerets rand er bertlet ca. 90° og er lukket af et plastlegeme. Også i dette tilfælde vil der kunne opstå utætheder i tilfælde af mindre forskydninger i længderetningen. En flange, der i nogen grad tager højde for sådanne forskydninger, vil næppe kunne modstå de indre tryk, 35 der kan komme på tale.Further, from US Patent No. 3,802,923, a galvanic element is known, wherein the rim of the cell cup is barred approx. 90 ° and is closed by a plastic body. Also in this case, leaks may occur in the case of minor longitudinal shifts. A flange which, to some extent, takes into account such displacements, will hardly be able to withstand the internal pressures that may occur.

Et galvanisk primærelement af den indledningsvis nævnte art er ifølge opfindelsen ejendommeligt ved at cellebægerets rand er 150050 2 bertlet ca. 140° - 190°, fortrinsvis ca. 170° - 190° og at den bertlede zone ligger formsluttende og tætnende an mod undersiden af en flangedel af plasttætningselementet over ca. 50° -100°.According to the invention, a galvanic primary element of the type mentioned initially is characterized in that the edge of the cell cup is 150050 2 140 ° - 190 °, preferably approx. 170 ° - 190 ° and that the bristled zone abuts molding and sealing against the underside of a flange portion of the plastic sealing member above approx. 50 ° -100 °.

55

Derved bibeholdes tætningen også i tilfælde af mindre forskydninger i længderetningen.Thereby, the seal is also retained in case of minor longitudinal shifts.

Opfindelsen skal nærmere forklares i det følgende under hen-10 visning til tegningen, hvorThe invention will be explained in more detail below with reference to the drawing, in which

Fig. 1 viser et galvanisk primærelement med et tætningselement og en etiketteindhylning, 15 Fig. 2 primærelementet med etikette- og plastindhylning,FIG. 1 shows a galvanic primary element with a sealing element and a label envelope; FIG. 2 the primary element with label and plastic wrapping,

Fig. 3 et primærelement med et tætningselement, en kontaktkappe og en indhylning i form af en metalkappe, 20 Fig. 4 det i fig. 3 viste primærelement med et andet tætnings-element, ogFIG. 3 shows a primary element with a sealing element, a contact sheath and a casing in the form of a metal sheath; FIG. 4 shows the embodiment of FIG. 3 with a second sealing element, and

Fig. 5 et primærelement med et tætningselement ifølge opfindelsen .FIG. 5 shows a primary element with a sealing element according to the invention.

2525

Det i fig. 1 viste primærelement omfatter et cylindrisk celle-bæger 1, der er lukket af et plasttætningselement 5. Cellebæ-gerets 1 øvre rand er bertlet over en vinkel på ca. 140° -190°, fortrinsvis over en vinkel på ca. 170° - 190°. Den bert-30 lede rand 2 indgriber i plasttætningselementet således, at en rundtgående flange 6 af piasttætelementet ligger tætnende og formsluttende an mod cellebægerets 1 bertlede rand 2 over en vinkel på ca. 50° - 100®. Cellebægerets rand 2 er anbragt ved en ansats på tætningselementet og er derved fastholdt på irre-35 versibel måde. En elektrodemasse i cellebægeret 1 er derved beskyttet mod fugttab allerede inden etiketten påføres. Gennem tætningselementet er der ført en positiv elektrodeafleder 3, der foroven er dækket af en elektrodekappe 4. Cellebægeret 1 udgøres fortrinsvis af zink.The FIG. 1, the primary element shown in FIG. 1 comprises a cylindrical cell cup 1 closed by a plastic sealing element 5. The upper edge of the cell cup 1 is bent at an angle of approx. 140 ° -190 °, preferably over an angle of approx. 170 ° - 190 °. The upright ledge 2 engages in the plastic sealing member such that a circumferential flange 6 of the plyproofing member seals and seals against the upright ledge 2 of the cell cup 1 at an angle of approx. 50 ° - 100®. The rim of the cell cup is disposed by an abutment on the sealing element and is thereby held in an irreversible manner. An electrode mass in the cell cup 1 is thereby protected against moisture loss even before the label is applied. A positive electrode diverter 3 is passed through the sealing element, which is covered at the top by an electrode cover 4. The cell cup 1 is preferably made of zinc.

Claims

150050 Sealing element either of the parts shown in FIG. 2, the primary element shown in FIG. 2 corresponds substantially to the sealing element of FIG. 1. The FIG. 2, the primary element shown in Fig. 2 is further coated by a plastic hose 11, which optionally has a pressing 5, the upper edge of which can be inserted into a recess 12 in the upper side of the sealing element. In the embodiment of FIG. 3, a positive sheath 10 13, an insulating casing 14 located on the cell cup 1 and a metal sheath 15 above the contact sheath 13 are arranged on the positive electrode conductor over the cell surface. 4, the cell cup and the negative electrode 1, respectively, are again provided with a plastic envelope 14 and a metal sheath 15. On the upper side of the sealing element 5 there is also an outer annular flange 16. which, together with the plastic envelope 14, is carried over the flange of the contact cover 13. FIG. 5 shows a sealing element according to the invention in connection with an alkaline primary element, for example an alkali magnesium cell. The cell cup 17 is preferably made of steel and has at its upper edge a bristled zone for adjusting the plastic sealing element 5. The sealing element 5 has a bore 18 for receiving a negative deflector 19. A negative contact disc 20 with an upward flange 21 is rolled by the annular flange 16 at the sealing member together with the insulating casing 23 and the metal casing 24. The sealing member has a breaking point in the form of a diaphragm valve 22 which, at a sudden overpressure, springs without the sealing member being pressed out of the ground steel cup 17 for that reason. .

1. Galvanic primary element with a cylindrical cell cup (1) closed by a plastic sealing element (5), the edge of the cell cup being bristled and the bristled edge (2) engaging the inside of the plastic sealing element (5) and the brim