MULTI-CELLULAR BATTERY ALSO INTO THE COVER OF INTEGRATIONS OF CENTRAL DEGASSING LINE.

The invention concerns a more-cellular battery also into the cover of integrated central degassing line, those by a porous body after auß EN is final.

Covers are manufactured today mostly as einstückige haubenförmige squirting hurry and with the block boxes equipped finished with the disk packages spiegelverschweiß t. By appropriate partition walls in the cover hood on the one hand the block box subdividing cell partitions up to the full overall height of the battery are supplemented, connected on the other hand in addition, the filler necks of each cell fire-place-like projecting into the cover inside with a channel in such a manner, daß the gas areas of all cells, after the charging holes with Verschluß plug locked are close, over which communicate to common Gaskanal. In this way into the cover hood an integrated becomes, konstruktionsmäß industrial union opposite the usual elements of a battery independent system for deriving from the cells withdrawing acid gases in an educated manner, as it admits of the DE-OS e.g. from 34 44 011 is.

It is further well-known from this block letters or from the US-PS 4.463.069, the outlet of a central degassing system. likewise at the cover is, with a porous body abzuschließ EN, which permits an unhindered leaking out that accumulator gases. turned around however piercing one äuß eren ignition flame with explosion sequence inside the battery to prevent is.

Ignition copy barriers of such kind become in the course of battery operation through with the gases carried along acid nebulas damp. The blockage of the pores leads to an unwanted high flow resistance.

Also a bleed valve possesses this lack gemäß DE-OS 35 16 552, which consists in a vertically flowed through combination arrangement between a flame retarding gas-permeable disk and a valve part of only one elastomers a molded article.

The invention is therefore the basis the task to make a more-cellular battery available after the initially formulated generic term to their gas disposal perfectly functions and with the one sealing setting of the flame protection filter is prevented.

The task becomes erfindungsgemäß with the means indicated in the requirement 1 solved.

Afterwards the closing of the degassing line proved to that by a porous body as successful, itself not horizontally, but one extends perpendicularly to the electrolyte mirror and one flows through parallel to the electrolyte mirror, i.e. in horizontal direction. The porous body is for example a frit from ceramic(s) or an acid-proof plastic, for example polypropylene, a polyethylene or a polytetrafluorethylene. In the preferredwise execution form of a disk it is erfindungsgemäß perpendicularly to the electrolyte surface arranged and in such a way to the gas flow orients, daß this it toward their smallest thickness flows through.

Before the porous body, in direction of flow seen, still another relief valve is arranged. Both the relief valve and the frit body are by a common cap to integrals a construction unit joined which from above by an opening of the cover in an interruption the degassing line to be pushed in can. The degassing line is here, which is forwards shortly before their Ausmündung in the free, chamber-like extended, what one paß exact insertion of the cap, those with its open sides the cross section of the degassing line accurately cover muß , facilitates.

Plug-in these mechanisms important for the explosion protection and regular degassing have to be replaced by the separate arrangement of porous body and relief valve in a cap replaceable and rapidly. They stress auß erhalb the battery case also no additional area. The valve, which opens on a gas positive pressure between 50 mbar and 100 mbar and after exhaust immediately again schließ t, protects the frit effectively against humidity when shaking or tilting the battery. By their transfer of the Auß enseite the cover into the apron of the actual Ausmündung of the degassing line, i.e. into the photographic chamber of the cap, the gas release opening remains free for possible hose outlets.

A particularly favourable execution form of the invention is more near described on the basis the figures.

Figure 1 shows a cover fragment that cut at height of the electrolyte charging holes erfindungsgemäß EN battery with frit cap which can be used in it.

Figure 2 shows the frit cap in the profile.

Figure 3 shows the ground of the frit cap of the inside in a plan view.

Gemäß Figure 1 becomes of a cylindrical plastic cap the 1 eingefaß Te ceramic(s) frit 2, at whose back a feather/spring valve is arranged, so inserted into the chamber-like extension 3 of the degassing pipe 4 in the cover 5, daß on the Deckplättchen 6 represented the arrow 7 with the Auslaß direction that gases agrees.

The Verschluß plug 8 are usually into the charging holes 9 screwed in (the thread is not here represented for simplification reasons) and schließ EN this upward closely off. By a diameter taper ratio of the plugs annular gaps 10 are creative between them and the charging holes, which permit continuous gas communication between the single cells along the piping.

In its employment use the cap is zentrosymmetrisch positioned before the gas release opening 11 and can be removed for replacement by Untergreifen under the Deckplättchen e.g. by means of a small screwdriver again.

After figure 2 the cylindrical cap possesses 1 side a ground 12 cleared away on that the frit body, which a centric tap 13 arranged inward is angeformt. The tap forms the guidance for a valve disk 14, which by Kraft of a spiral spring 15 against the ground 12 gepreß t and thereby the accumulator gases flowing against from left, as long as their pressure is small, depresses through in the ground existing Ventilöffnungen 16 (in the cutting plane selected here only the upper of the three Ventilöffnungen from figure 3 is recognizable) blocked. The valve spring 15 from a corrosion-stable spring steel supports itself thereby on the frit body off.

For good sealing against the cover the cap 1 is provided to both sides with circulating sealing rims 17.

As soon as the gas pressure in the degassing pipe exceeds one with 50 mbar up to 100 mbar lying threshold value (response pressure), the valve disk stands out against the ground of the cap and gives now, due to a differential piston copied the Bodenprofils, opposite one that verhältnismäß industrial union confine valve holes suddenly strongly vergröß erten ventilation cross section freely. This leads to a momentary relaxation, whereupon itself the valve again schließ t. The gas disposal that erfindungsgemäß EN battery finds in this way not continuously, but only in stoß well-behaved intervals with between-lying, temporally expanded dwell phases instead of.

With the gases carried along humidity is kept away by the upstream valve from the frit body, by it itself größ tenteils already before the ground of the cap collects and before there easily again over the collecting line into the nearest cell zurückfließ EN can. A humidity remainder caught nevertheless by the porous body knows the Gasdurchlaß do not obstruct also on a long-term basis, since because of the vertical longitudinal extending of the body, which is enough until the far under level of the degassing line, a formed liquid condensate moves away automatically from the flowed through center of the frit body into its lower part.

The plan view on the ground of the cap from the inside gemäß Figure 3 läß t the arrangement of the Ventilöffnungen zentrosymmetrisch around the guide pin 13 around recognize. The Deckplättchen 6 with directional marker 7 appears here with its longitudinal fold. After correct inserting of the cap into the chamber-like extension 3 muß the Deckplättchen 6 with the surface of the Blockdeckels 5 concisely abschließ EN.