DE1065044B - Single cell housings for accumulators glued or welded to form a block unit - Google Patents

Description

GERMAN

KL.21b 1/01

INTERNAT. KL. H ol DJ

PATENT OFFICE

A 22744 IVa / 21b

REGISTRATION DATE: May 2, 1955

NOTICE THE REGISTRATION AND ISSUE OF THE EDITORIAL: SEPTEMBER 10, 1959

The invention relates to single-cell housings glued or welded to form a block unit for accumulators with interlocking, the opposing single cells against Ver Shift to each other in vertical and horizontal direction securing means.

Multi-cell accumulator batteries are available as a so-called block box unit, either as a larger one Vessel made from a unitary cast, which is divided into a plurality of cells, or from individual cells manufactured. The implementation of single cells has the advantage that, of a so-called single cell assuming any desired battery size can be made.

There is now a problem to be overcome in the case of block box units to be produced from individual cells in connecting the individual cells mechanically so tightly that they are subject to any vibration and mechanical Withstands loads that can occur during operation. There are already the most varied of them Possibilities have been suggested, but show no satisfactory solutions.

For small battery units with small individual cells, it is common practice to weld the cells simply by welding or by gluing the smooth side surfaces lying against one another.

Such a method is, however, in the case of larger units, especially when using larger cell boxes, not applicable because it is difficult to find the correct position when gluing or welding The cells must be adhered to to one another, which in most cases results in a displacement of the individual cells when gluing or welding occurs.

For battery units of this type, it is therefore already proposed special ones for mechanical cohesion To use frames that have to be chosen large enough to accommodate the intended number of Connect cells together. The use of such frames has the disadvantage that for each the size of the battery to be produced the corresponding frames must be made and kept ready, whereby storage is unnecessarily burdened. In a known battery design from individual boxes are these on opposite side walls, which do not come into mutual contact, with smooth Provide longitudinal ribs at the same height. The ribs of the individual cells run parallel to an edge of the cell walls and, when arranged horizontally, form parallel to the upper edge of the cell or at a distance for this purpose, sections of a frame that partially or completely surrounds the battery. the Ribs have longitudinal bores through which, after the individual cells have been put together, accordingly long bolts or rods are pulled through which are glued together to form a block unit

or welded single cell housing

for accumulators

Applicant:
Accumulator factory Sonnenschein

GmbH,
Büdingen (Obhess.)

Otto Jache, Büdingen (Obhess.),
has been named as the inventor

Hold the screw connections tightly against each other. On the touching flat surfaces the ribs can also be connected to one another by gluing or welding.

Another known battery design, which is made up of individual cell boxes, has on the opposite one Side walls of the individual boxes that do not come to the mutual system, on their upper and lower parts edge strips or eyelets with a hole for the passage of a connecting rod. In addition, each has one of the for mutual abutment side walls of a cell box on their outside a depression, while on the other cell wall or on the wall of the neighboring cell that comes to rest its outside an increase is provided, which corresponds to the depression. The compilation of several cell boxes to a battery is done by joining the same, the shape of the ensuring the positive connection of the boxes in both the vertical and horizontal directions interlocking means can switch. The single cells form so joined together after they are united by the rods, the ends of which carry clamping nuts, a battery of one Block.

However, all of these designs have the disadvantage that they are applied to the outside of the individual cells Ribs, eyelets or edge strips protrude beyond the smooth surface of the battery. Through this the external standard dimensions of the battery, which must be complied with if possible, are exceeded. this also applies to batteries that are held together by frames. The individual cell boxes

909 627/107

must therefore be chosen to be smaller in order to be able to comply with the installation dimensions accordingly. this means but a degradation of the battery.

To avoid these disadvantages and to build a battery without using additional parts, such as frames, side ribs or the like, also to be obtained for larger block box units, according to the invention proposed that the side surfaces of the individual cells to be connected with several expediently in Longitudinal and / or transverse direction running, interengaging narrow elevations and to provide groove-like depressions which are approximately half in the material of the cell wall or correspondingly protrude beyond the cell wall, and the individual cells only at those with the interlocking ones Means equipped surfaces to be glued or welded together.

In order to obtain a sufficiently large adhesive surface, it is advisable to use the elevations and depressions to be designed as a tooth system that extends over the entire area to be glued in the case of narrow cell boxes Single cells extend. The toothing can be designed so that the surfaces to be glued are equipped with several teeth lying at an angle to each other on the surface, or the Toothing can run parallel to the lateral edge lines and in several by about half Tooth pitch staggered sections be divided. With wider cell boxes, the toothing and limit the gluing to the edge zones of the side wall and that enclosed by the toothing Jump back middle field with respect to the adjacent wall thickness of the cell housing, so that on a free central field remains on the side surfaces, which can be used to add any lettering or to attach certain signs.

Details and further features of the invention emerge from the following description of several Exemplary embodiments shown in the drawing. It shows

Fig. 1 shows a z. B. three single cells assembled battery unit,

2 to 5 each show a side view of the side surface used for gluing in different designs,

6 shows, on a larger scale, a cross section through part of a cell wall along line VI-VI of Fig. 3,

FIGS. 7 and 8 show, on a larger scale, a cross section along line VII-VII and VIII-VIII in FIG by opposing single cells.

Fig. 1 shows a battery, for example from three single cells 1, 2, 3 is made. By gluing the adjacent side surfaces, the Individual cells firmly joined together to form a battery unit 4. So that when gluing the individual cells without Use of devices or other aids can be put together immediately so that no more shifting can take place, are the side surfaces that come to rest against each other, provided with teeth running in the longitudinal or transverse direction Γ, 1 "and 2 ', 2" and 3', 3 ". The teeth can have a square, rectangular, trapezoidal or semicircular cross-section have and lies about halfway in the material of the cell wall. The embodiments according to FIGS. 6 and 7 show in Cross-section corresponding examples.

If the surfaces to be glued together are of small width, the whole is expedient The surface is provided with the toothing in such a way that the surface is subdivided and, as FIG. 2 shows, one or more partial surfaces with a toothing 5, 6 running in the longitudinal direction and one or several partial surfaces can be provided with a toothing 7 running in the transverse direction. The teeth can be at right angles or at an angle to each other. Through the different Running direction is achieved that when the teeth of two individual cells mesh with one another are secured against displacement both in the longitudinal and in the transverse direction. It goes without saying that the interlocking teeth complement each other so that when the individual cells are joined together these take their correct position.

Fig. 3 shows an embodiment in which the toothing runs only in the longitudinal direction to the edge line. In order to secure against longitudinal displacement in this case, the area is subdivided again, in such a way that one or more partial surfaces with aligned teeth 8, 9 and one or more Partial surfaces are provided with a toothing 10 offset by half a tooth pitch, so that butt joints 11, 12 are formed on which the cooperating Teeth with their end faces support one another and prevent longitudinal displacement (Fig. 7).

If the cell walls that are glued together are wide enough, it is sufficient, as shown in FIGS. 4 and 5 apparent to limit the gluing to the edge zones. The teeth can be parallel run to the edge lines, so that two horizontal teeth 13, 14 and two vertical Toothings 15, 16 are formed (Fig. 4).

With this type of toothing arrangement, a free area 17 remains in the center of the cell wall, which for attaching characters or symbols 18 is suitable.

As can be seen from FIG. 5, the teeth arranged in the edge zones of the surface run 19, 20, 21, 22 only in the longitudinal direction of the cell wall, it is secured against longitudinal displacement achieved in that due to the half lying in the cell wall and half protruding beyond it Toothing at the dividing lines 23 and 24 between the toothing 19, 20 and center field 25 abutment 26 are formed (Fig. 7), against which the individual teeth are supported in the area of the middle field. That As shown in FIG. 7 in the upper right part, middle field 25 can be set back somewhat, so that when joining the individual cells a gap 27 (Fig. 8) remains, which allows the attachment of raised Fonts or symbols 28 permitted.

In the illustrated and described exemplary embodiments, there are only two of the opposite ones Provide side walls with the teeth. It goes without saying that as needed the other side surfaces and the hood cover 29 can also be equipped accordingly with this.

With the help of the seat protection described, it is possible in the simplest way, using Build single cells so-called block box units of any size. Every single cell can already be perfect except for the pole connections 30 and pole connections 31, be prepared and stored in stock will. All that is required to produce the desired battery size is the required one Apply glue to the number of individual cells at the connection points and press them together. The seat lock immediately results in the correct position of the individual cells with respect to one another, without further measures being taken

or tools are required. By putting on the pole terminals and the pole connections, the Battery ready for filling and charging.

Claims (5)

Patent claims: 1. To a block unit glued or welded single cell housing for accumulators with interlocking, the opposing single cells against displacement to each other in the vertical and horizontal direction securing means, characterized in that the side surfaces to be connected of the individual cells (1, 2, 3) with several appropriate extending in the longitudinal and / or transverse direction, interengaging narrow elevations and groove-like depressions are provided, which lie approximately halfway in the material of the cell wall or correspondingly protrude beyond the cell wall. 2. Individual cells according to claim 1, characterized in that the elevations and depressions extend as teeth over the entire surface of the individual cells to be glued. 3. Individual cells according to claim 1 and 2, characterized in that the surfaces to be glued are equipped with several teeth (5, 6, 7) lying at an angle to one another on the surface. 4. Individual cells according to claim 1 to 3, characterized in that the toothing is parallel to the lateral edge lines and in several sections offset by about half a tooth pitch (8, 9, 10) is subdivided. 5. Individual cells according to claim 1, characterized in that the toothing is only on the Edge zones of the side surfaces extends (Fig. 4 and 5) that the enclosed by the toothing Center field (25) with respect to the adjacent wall thickness of the cell housing springs back and When assembling the individual cells, a free central space (27) between two adjacent ones Single cells is formed. Considered publications:
French Patent Specification No. 570446,1076430; British Patent No. 415,626. 1 sheet of drawings