DE1937438A1 - Envelope separator made of synthetic fibers for lead batteries - Google Patents

Description

PICCIOTTO Ezra Vittorio in Milano (Italy)

Sheath separator made of synthetic fibers for Lead-acid batteries

Registered on

Start of the patent term:

The present invention relates to so-called separators, which keep the positive plates of a storage battery at a distance from the negative plates. The known designs of such separators mostly consist of polyvinyl material or cellulose, which is protected by another material resistant to watery H SO, and usually have the form of corrugated or ribbed foils so that gases can escape. However, 'generators such SEPA have several drawbacks, for example, their Brttchigkeit, its limited stability at temperatures above 50 ^e C, low or not existing retentivity of the active material of

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Plates that are in use during the life of the Accumulator detaches, sensitivity to vibrations, Vibrations, etc. The aim of the invention is to avoid them the aforementioned and other disadvantages. This goal Can be achieved with a separator according to the invention consists of a cladding with its larger surfaces each of the alternating plates of an accumulator cell comprises or simply adheres to the plate surface, from against

H SO resistant fibers, preferably methacrylate fibers, be-2 4th

stands and as a plate separator support element for the active Plate material and microporous element acts and at high Resistant to temperatures, hydrophilic and unbreakable.

According to one embodiment of the invention, there is the Separator from an envelope that is in the area of an or several of its sides is closed by hot welding and a labyrinth-like structure of fiber yarns with suitable Has titer. ,

According to a further embodiment of the invention the separator made of a tubular, woven or knitted or knitted body, with vertical channels, which are limited by protruding threads and in the area z ^ rei its opposite transverse sides connected after the insertion of the positive plates and then heat-treated. shrinks and is hardened to contain the plate to surround and to lay close to its surface, whereby

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however, the thread delimiting the vertical channels protrudes are retained so that the disfiguring gases escape and the microporosity is created «

The invention is in the "below with reference to exemplary embodiments and the drawing Middle explained ₉ in which Fig. 1 in a perspective and exploded view of an accumulator, whose separators are formed erfindüngsgemass, Fig. 2 shows a section along the line II-II of Fig. I ₄ FIG. 3 is a diagrammatic representation of a preferably embodiment form of a separator according to the invention with a positive plate, and FIG. 4 shows a further embodiment form in a representation similar to FIG. 3.

The _{separator 10 shown in FIGS. I 3} 2 and 4 is designed as a bag closed in the area of these sides 11, 12 and I3. The separator consists of against H SO ₁

24

stable material and has a layer that is formed by a labyrinth-like interweaving of threads with the possible addition of a binding resin, which is also resistant to the chemical effects of Η _Λ 8 (Γ. Fig. 2

let us see that each separator is the function of two original ones Separators met. The material, from which the Separator is produced, for example, a methacrylate

fiber or another fiber with similar physical and chemical properties that is resistant to H SO. With 29j, 14j 15 and 16 cells within an accumulator housing 17 3 are designated which form the same number of accumulator cells. With 18 and 19 connecting webs of the extensions 22 of the positive plates 30 and negative plates 3I are designated, which lead to connection poles 21 and 2Q.

In the embodiment shown in FIG. 3, the

W separator made of a sleeve 10a made of a tubular knitted fabric which has vertical ribs 23. The tube is connected in the transverse direction at 24 and 25 so that it encloses the positive plate 30 of the accumulator element. Preferably, according to a feature of the invention, the separator enclosing the plate is then subjected to a heat treatment, the heat-shrinking properties and heat-hardening properties of the methacrylate fibers being used and complete conversion

P clothing the plate is achieved. Besides its ungated is resistant to the chemical action of sulfur Shure such a separator is not ¹ retardant, insulated thermally and electrically and can withstand, which lie above the potential for the plates values for long periods of time also Tempera doors.

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In the case of the pocket-shaped separators according to FIG. 4, ent « .stead oasis escape through the microporous walls.

Separators created according to the invention offer the following Advantages. .

1) They effectively and completely hold the active material from accumulator plates, which extends their service life and excellent shock resistance and vibrations. Thanks to the sticking together of the Separator surfaces on the surfaces of the positive or negative Every crumbling and thus the occurrence of plates is more internal Short circuits impossible.

2) Because of the hydrophilic structure of the separators and their Due to the capillary action, the plates are in constant contact with electrolyte, even if it is. Mirror already under the The plate edge has decreased.

3) Even at low temperatures where the electrolyte becomes more viscous, the separators allow its access the panels, because they have a spongy structure, made of « sufficiently porous.

4) The separators allow the uninterrupted operation of the Accumulator even at relatively high temperatures, because they can e.g. endure 100 ° C easily and without change »

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5} One previously provided below the plates in the housing Space (33 in Fig. 1) for receiving crumbled plate material can be omitted because the separators press the active material against the plates, from which nothing can fall down. The plates can reach the floor so that when used Conventional containers can be used in these larger plates can and with the same volume a larger storage capacity is achieved.

W - 6) As a result of their elasticity and compressibility, such separators allow the construction of elements with a larger number of plates, so that more powerful accumulators result with the same space requirement.

7) On the other hand, a given storage capacity can be used achieve with a smaller space requirement.

8) Which enables good electrical and thermal insulation easy starting even at low temperatures.

P 9) The hydrophilic structure causes the retention of the Electrolyte that soaks the separators and less evaporated, so that distilled water is refilled much less frequently must become.

IB) Accumulator plates can be used in separators according to the invention introduced with wrapping machines and wrapped with them so that automation is possible, because of the There is no unbreakability of any rejects.

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Claims (3)

P ate η ta ns ρ r ü c h e; ; 1. Umhüllungsseparator made of synthetic fibers for lead accumulators, characterized in that it consists of an envelope which with their larger areas each of the alternating plates is one Includes accumulator cell, or adheres to the surface of the plates, made of H-SO resistant fibers, preferably methacrylate fibers and acts as a plate separator, support element for the active plate material and microporous element and resistant to high temperatures, hydrophilic and unbreakable is. "." .. ".- 2. Separator according to claim 1, characterized in that it from a cover that is in the range of one or more - r its sides are closed by hot welding, and a labyrinthine structure of fiber yarns with suitable Has titer. , 3. Separator according to claim 1, characterized in that it from a tubular body made from a woven fabric, knitted fabric or knitted fabrics with protruding vertical channels delimiting them There is a thread that is connected around opposite transverse sides after a positive plate has been inserted and then heat-shrunk as well as hardened and with the positive 0 0 9811/0958 to a; Unit is connected with firmly abutting surfaces, with the threads delimiting the channels protruding obtain; are.. PICeiöTTO Ezra Vittx * rio by :