NO118103B - - Google Patents

Description

Plate cell.

The present invention is based on a

further development of a plate cell as indicated

in patent no. 91,093 which plate cell is composed of an upper relatively rigid box part and

a soft lower box part made of plastics with

openings or holes in their bottom plates, in which cell the zinc plate (dissolving electrode) has rolled a conductive foil.

In the case of a plate cell according to the aforementioned

patent is the cell insert, which can consist of

a depolarizer press part (d) with a protruding nose (n), a collar paper (s) and

a zinc plate (z) with an applied electrolyte carrier (c) and a rolled conductive layer foil (1),

arranged in a two-part box of insulating

plastics (ti) and (t2), and the distinctive wood

mentioned two-part boxes is that the inner part

(t2) of the box is made of relatively soft

plastic material, e.g. polyethylene, whereas

the outer part (ti) of the box is made of

relatively stiffer material, e.g. polystyrene,

so that the walls of the inner enclosed part

fits tightly against the walls in the outer

enclosing part when pressure occurs i

The cell. If this construction is carried out without gluing the conductive layer foil (1) combined with the dissolution electrode in

the lower part of the plastic casing (ti), so

is it especially in case of accidental presence

small irregularities, it is possible that the electrolyte

passes the zinc electrode (c) between

the guide layer (1) and the bottom and trees of the box (ten).

out through the lower hole.

The present invention is based on

to remedy this disadvantage and consists in that there

on the inside of the lower box part (ti) of

soft material sits one around the hole course-21 b-10<03> — 118103 — 1 sheet drawings.

end of a single or multiple bead or a burr (elevation), against which the conductive foil (1) which is rolled onto the dissolution electrode, rests forcibly.

The drawing shows an embodiment of the plate cell according to the invention.

As can be seen in the drawing, a small ridge-like elevation r is arranged around the hole in the lower bowl half (ti), which elevation, when the plate cells are assembled into a plate cell stack, presses into the conductive foil (1) and thus causes a significantly improved sealing. The same can also be achieved when the inside of the bottom of the lower bowl (ten) is provided with suitable, e.g. Concentrically about the hole in the bottom of the lower bowl continuous riffles, grooves or small elevations.

Claims (1)

Plate cell, composed of an upper relatively rigid box part and a soft lower box part made of plastics with openings or holes in its bottom plates, as indicated in patent no. 91 093, in which cell the zinc plate (the solution electrode) has a conductive foil rolled on it, characterized by that on the inside of the lower box part (ti) there is a single or multiple bead running around the hole or a burr (elevation), against which the conductive foil (1) on which the dissolution electrode is rolled, rests forcibly.