JP2561124Y2 - Lead storage battery - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead storage battery.

[0002]

2. Description of the Related Art Conventionally, zigzag (or foldable) separators are often used in lead-acid batteries for electric vehicles. This separator is disposed between the anode plate and the cathode plate, and the upper part thereof is open.

[0003]

However, such a zigzag separator has the effect of preventing a short circuit on the side between the anode plate and the cathode plate, but has the disadvantage that a large amount of sediment is projected at the top of the cathode plate. have. In a lead-acid battery for an electric vehicle that is repeatedly used for charging and discharging, a particularly large amount of sediment bends toward the upper part of the cathode plate and eventually reaches the ear part of the anode plate or the lower part of the anode-side strap after passing over the upper part of the separator. This often leads to short battery life. The present invention has been made to solve the above-mentioned problems, and an object of the invention is to provide a long-life lead-acid battery by preventing a short circuit from the upper part of the separator.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention comprises a zigzag (folding) continuous separator and an anode plate having a separator holding portion on an upper portion, and a separator holding portion of an adjacent anode plate. By using a lead-acid battery characterized by sandwiching the upper part of the continuous separator between each other,
This is to solve the above problem.

[0005]

By sandwiching a zigzag (folding) continuous separator between anode plates each having a separator holding portion at the top, the upper portion of the separator can be closed so as to surround the cathode plate. Therefore, it is possible to prevent the segment deposited on the upper part of the cathode plate from passing over the upper part of the separator and being short-circuited to the anode plate. Moreover, the upper portion of the separator does not need to be sewn in advance, and can be easily implemented by a conventional manufacturing method.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described with reference to the drawings showing embodiments. FIG. 1 is a view showing an anode plate in one embodiment of the present invention, FIG. 2 is a view showing an electrode plate group using the same, and FIG. 3 is an enlarged view of a main part of the electrode plate group. In the figure, 1
Reference numeral denotes an anode plate, reference numeral 2 denotes an electrode plate group using the anode plate, and reference numeral 3 denotes a separator holding portion formed of a projection provided on the anode plate. The projection 3a is provided on the anode plate 1a and is provided at a position higher than the electrode plate height of the cathode plate 4 when the electrode plate group 2 is formed, and the separator 7 can be sandwiched between the projections 3b of the adjacent anode plate 1b. It is configured as follows. In this embodiment, the projections are provided on both sides of the anode plate 1, but the present invention is not limited to this. Any structure may be used as long as the separator between them can be sandwiched between adjacent anode plates. For example, as shown in FIG. 4, a projection 3a is provided only on one side of the anode plate, and the anode plate adjacent to the projection is provided. It is also possible to adopt a structure in which the separator is sandwiched between the portion 3b having no protrusion. Incidentally, the length of the holding portion may be about the width of the lug portion 5 of the anode plate 1, but may be extended to the width of the electrode plate of the anode plate 1 as necessary. At this time, the ear 6 of the cathode plate
In the portion corresponding to the above, the height of the protrusion may be reduced.

[0007]

As described above, according to the lead-acid battery according to the present invention, the sediment protruded at the upper part of the cathode plate has the simple structure and does not greatly change the conventional manufacturing method. Extension to the anode side strap can be easily prevented. Therefore, since the problems of short circuit and single life of the storage battery can be solved, the practical value thereof is great.

[Brief description of the drawings]

FIG. 1 is a view showing an anode plate according to an embodiment of the present invention.

FIG. 2 is a view showing an electrode group according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a main part of the electrode plate group.

FIG. 4 is an enlarged view of a main part of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anode plate 2 Electrode plate group 3a, 3b Separator holding part 4 Cathode plate 5 Anode plate lug 6 Cathode plate lug 7 Continuous separator

Claims (1)

(57) [Scope of request for utility model registration] 1. A zigzag (folding) continuous separator (7) and a separator holding part (3a, 3b) on the upper part.
And a separator holding portion (3) of the adjacent anode plates (1a, 1b).
A lead-acid battery wherein the upper part of the continuous separator (7) is sandwiched between a, 3b).