JPS6386346A - Storage battery - Google Patents

Abstract

PURPOSE:To decrease a useless space in a container to make the configuration compact by installing a post fixing part inside the contour of each of anode and cathode plates. CONSTITUTION:Post fixing parts 11a, 12a are installed in a cathode 11 and an anode 12 so as not to be extruded from their contours. A cathode post 14 and an anode post 15 are fixed to the cathode 11 and the anode 12. Since this post connection eliminates a need for forming a strap, the useless space formed in the upper part of the electrodes in a container 6 is decreased and the configuration of a battery is made compact.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a storage battery that is miniaturized.

[Prior Art] In a conventional storage battery of this type, as shown in FIG. 5, the negative and positive polar plates 1 each consist of a rectangular lattice 2 and ears 3 protruding outward from the lattice 2. It is formed by filling a lattice with an active material. These polar plates 1 of different polarities are alternately stacked with separators 4 in between, and these plates 1 and separators 4 constitute a plate group 5. This electrode plate group 5 is housed in a battery case 6, and a lid 7 is attached to an opening 6a of the battery case 6.

In the electrode plate group 5, the ears 3 having the same polarity are connected by straps 8, and each strap 8 is connected to a pole post 9 that passes through the lid 7, respectively.

[Problems to be Solved by the Invention] In the storage battery having the above structure, when forming the strap 8 by welding the ears 3 of the bipolar plates 1, a comb-shaped jig for receiving additional lead etc. is attached to each adjacent A strap 8 is formed above the ear 3 in order to perform welding by inserting it between the ears 3, and the strap 8 and a part of the ear 3 left by the comb-like jig connect the pole inside the battery case 6. There was a problem in that the space above the plate-shaped portion of the plate 1 became wider, resulting in an increase in the size of the storage battery.

An object of the present invention is to provide a lead-acid battery that can reduce wasted space in a battery case and make the battery smaller.

[Means for Solving the Problems] The present invention will be explained based on the embodiments shown in FIGS. It is stored and the pole column attachment part 11 of the bipolar plates 11° 12
Pole poles 14.15 are connected to a and 12a, respectively, and each pole pole 14.15 is a storage battery that protrudes outward from the battery case 6. In the present invention, the pole poles of the bipolar plates 11.12 The mounting portions 11a, 12a are provided inside the extension line of the outline of other portions of the pole plate 11.12 adjacent to the pole column mounting portions 11a, 12a, respectively.

[Function] By doing as above, it is possible to reduce the size of the storage battery by eliminating wasted space in the battery case 6 for accommodating the strap and part of the ear part as in the conventional case.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 4.

1 to 3 show a first embodiment of the present invention. The storage battery of the first embodiment has an insulating battery [6] made of synthetic resin. An M7 can be attached to the upper RA opening 6a of this battery case 6. A group of electrode plates 5 is stored in the battery case 6, and each of the electrode plate groups 5 is constructed by laminating one @ electrode plate 11 and one cathode plate 12 separated by a separator 13. ing. The cathode plate 11 and the cathode plate 12 are each formed into a substantially rectangular plate shape.
2 has pole mounting portions 11a and 12a formed at one upper corner thereof so as not to protrude outward (see FIG. 2). That is, each pole mounting portion 11a, 12a is attached to the pole plate 11.
．． The pole mounting portions 11a and 12a are respectively provided inside the extension lines of the contours of other portions adjacent to the pole mounting portions 11a and 12a. The anode plate 11 and the cathode plate 12 are attached to their respective pole pole mounting portions ii.
a and 12a are arranged separately on the left and right devices above the plate surface of the electrode plate so as not to overlap in the plate thickness direction. Each plate 1
Holes 11b and 12b are formed through the pole mounting portions 11a and 12a in the thickness direction, respectively.

Each pole mounting portion 11a, 12a has a protrusion 14a inserted into the hole 11b, 12b.

Plate-shaped pole columns 14 and 15 having 15a are connected by burner welding (see FIG. 3) or the like. The pole poles 14 and 15 are pole pole mounting portions 11a and 12a on the sides facing each other when the pole plates 11 and 12 are stacked, respectively.
is attached to.

The separator 13 interposed between the anode plate 11 and the cathode plate 12 has notches 13a and 13 that avoid the respective pole columns 14 and 15.
b is formed. Incidentally, as shown in FIG. 1, the lid 7 is provided with a safety valve 16.

In the first embodiment of the present invention, the bipolar plates 11, 12
is formed into a substantially rectangular plate shape, and a pole column mounting portion 11a is provided at one upper corner thereof so as not to protrude outward.

12a, when the electrode plate group 5 in which the anode plates 11 and 12 are laminated together with the separator 13 is housed in the battery case 6, the plate-shaped portion of the electrode plate is not in the battery case 6 as in the conventional case. It is possible to eliminate wasted space between the upper strap and a portion of the ear. Therefore, the storage battery does not become vertically elongated as in the conventional case, and can be made smaller.

FIG. 4 is a diagram showing a second embodiment of the present invention, in which the electrode plate group 5 includes one anode plate 11 and two cathode plates 1.
2 and two separators 13. In this case, the two cathode plates 12 are electrically connected to each other by a pole post 15 having a strap portion 15b, and the anode plate]1 is interposed between both cathode plates 12 with a separator 13 interposed therebetween. A notch 11b is formed through which the strap portion 15b of the pillar 15 connected to both cathode plates 12 is passed. The separator 13 has notches 13a and 13b formed in the same way as in the first embodiment.

The present invention is not limited to the first and second embodiments described above, and the electrode plate group may be composed of a plurality of anode plates, a plurality of cathode plates, and a plurality of separators. In this case, adjacent anode plates are connected by an anode strap, adjacent cathode plates are connected by a cathode strap, and cutouts are provided in each of the anode plate and the cathode plate in order to avoid the anode strap and the cathode strap, respectively. Make it.

Although the present invention is particularly suitable for sealed lead-acid batteries with a small number of electrode plates, it is of course applicable to general lead-acid batteries or alkaline batteries.

Furthermore, the present invention is not limited to being applied to a substantially rectangular electrode plate as in the first and second embodiments.
For example, it can also be applied to circular electrode plates.

[Effects of the Invention] As described above, according to the present invention, the pole mounting portions of the negative and negative electrode plates are each provided inside the extension line of the outline of the other portion of the pole plate adjacent to the pole mounting portion. Therefore, it is possible to reduce the size of the storage battery by eliminating the wasted space above the electrode plates in the battery case, which is the conventional strap and part of the ear.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the lead-acid battery of the present invention, FIG. 2 is a front view showing the negative and positive polar plates used in the lead-acid battery of the present invention, and FIG. 3 is a front view showing an embodiment of the lead-acid battery of the present invention. FIG. 4 is an exploded perspective view of the electrode plate group used in the second embodiment of the present invention, and FIG. 5 is a vertical cross-sectional view of a conventional lead-acid battery. 6... Battery case, 11... Anode plate, 11a... Anode plate pole attachment part, 12... Cathode plate, 12a... Cathode plate pole attachment part, 14... Anode Pole pole, 15...Anode pole pole. Figure 1

Claims (1)

[Scope of Claims] A group of electrode plates having negative and negative electrode plates is housed in a battery case, each pole is connected to a pole mounting portion of the two poles, and each of the poles projects outward from the battery case. In the storage battery according to the present invention, the pole column attachment portions of the two electrode plates are each provided inside an extension line of a contour of another portion of the electrode plate adjacent to the electrode plate attachment portion. .