JPS595575A - Lead acid battery - Google Patents

Abstract

PURPOSE:To make a battery lightweighted and improve its lifetime and performance by winding a group of element by means of a hollow cylindrical body made of a flexible and acid-proof resin coat and the like, inserting it in a container, sealing pressed air in the cylindrical body, and pressurizing the group of element. CONSTITUTION:A group of element 1 is welded and assembled using a positive electrode post 2 and a negative electrode post 3 and is wound at arbitrary intervals by means of a hollow cylindrical body 4 made of a flexible and acid-proof resin coat and the like. Then, after the group of element 1 is inserted in a container 6, a storage battery is obtained by sealing pressed air and the like in the hollow cylindrical body 4 and tightly sealing the sealing entrance 5 of the hollow cylindrical body 4 so that the pressurization of the group of element 1 can be set to 5 to 20kg/dm<2>. As a result, when the group of element 1 is inserted in the container 6 or until an electrolyte is injected into the battery, the damage of both end plates of the group of element 1 caused by the physical and mechanical oscillation and shock, etc. can be prevented. Besides, when the electrolyte is injected, since the margin between the group of element 1 and the container partition wall is filled with the hollow cylindrical body 4, a great amount of the electrolyte can not be housed and the light weight of the battery can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of an electrode plate group for a lead-acid battery, and aims at improving life performance and reducing weight.

Conventionally, in the case of inserting a plate group consisting of anode and cathode plates and a separator plate into a battery case, in order to maintain the insertion load within a predetermined range,
A plurality of flat or corrugated spacers made of kraft bulbs, diatomaceous earth, glass fiber, binder, etc. were attached to the outside of the electrode plates at both ends of the electrode plate group to adjust the thickness of the single electrode plate group.

The spacer also has the effect of preventing damage to the electrode plates at both ends of the electrode group due to physical and mechanical vibrations and shocks caused when the electrode group is inserted into the battery case or when electrolyte is poured into the battery. . Furthermore, in the battery case that houses the electrode plate group.

A plurality of band-shaped protrusions are provided on the partition wall in contact with the electrode plate group. This protrusion is higher than the upper part of the lower part of tank 1a, and during use, the active material turns into mud and falls off. It was designed to be.

In addition, the protrusion provides an extra space between the electrode plate group and the battery case partition wall, and prevents the electrolyte from decreasing due to electrolysis of water during battery use.
In order to reduce the frequency of water replenishment, a large amount of electrolyte was secured. However, an electrode plate group is a combination of multiple anode plates, cathode plates, and separators, and even if each thickness is within a predetermined range, the thickness of the electrode plate group generally varies considerably. Some variation occurred.

Therefore, it takes a lot of man-hours to set the number of spacers to be attached to each electrode group, and the attached spacer tends to shift from the electrode group when inserting the electrode plate group into the battery case.

(1) In order to provide protrusions on the partition wall for IL battery containers, the shape of the mold for molding the battery container is complicated and complicated.

Injection time during molding was required, leading to high molding costs. In addition, batteries also have various drawbacks, such as an increase in the weight of the battery because a large amount of electrolyte is contained in the free space between the electrode plate group and the battery compartment.

The present invention obviates the above drawbacks.

In order to achieve the above object, the present invention winds an electrode plate group consisting of anode and cathode plates and a separator plate with a hollow cylindrical body made of flexible and oxidation-resistant resin film, and wraps the electrode plate group in a battery case. This is a lead-acid battery that is inserted into the hollow cylindrical body, compressed air is sealed in the hollow cylindrical body, and the electrode plate P3 is pressurized.

Embodiments of the present invention will be described with reference to the drawings. Figure 1 is.

This figure shows the structure of the electrode plate group of the lead-acid battery of the present invention.

After welding and assembling the electrode plate group 1 consisting of the anode plate, cathode plate, and separator plate with the anode Stranov pole pole 2 and the cathode strap pole pole 3, the pole plate group] is made of oxidation-resistant resin. A hollow cylindrical body 41 made of a membrane or the like is wound with a trowel at arbitrary intervals.

In this case, the hollow cylindrical body 4 is used to insert the electrode plate group l, taking into account the loss of gas generated from charging etc. from inside the electrode plate group, and also the sliding friction when inserting the electrode plate group into the battery case. Wind it up and down.

Reference numeral 5 denotes an inlet for enclosing compressed air or the like into the hollow cylindrical body 4 . Figure 2 shows the state of the hollow cylindrical body before it is wound around the electrode plate group.

The filling port 5 is filled with compressed air or the like after being filled. Figure 3 shows
There is no protrusion for storing the electrode plate group L. Hold the II battery case 4 times above the water, and the bottom part of the battery case 6 has a saddle 7 for reinforcing the bottom part of the N tank.
(Fig. 4 shows a conventional battery case 8 with a protrusion for storing a group of electrode plates. It has a plurality of partition walls (this is an extension of the saddle 9) in contact with the group of electrode plates. band-shaped protrusion 1
It is set to 0. In this embodiment, after inserting the electrode plate group 1 shown in FIG. 1 into the III barrel 61 shown in FIG. Compressed air or the like is inserted into the hollow cylindrical body 4, and the injection II 5 of the hollow cylindrical body 4 is sealed to obtain a storage battery.

In the present invention, since the electrode plate group 1 is wound around the hollow cylindrical body 4,
When inserting battery case 6 of electrode group 1 or F! ! It was possible to prevent damage to the electrode plates at both ends of the electrode group 1 due to physical and mechanical vibrations, shocks, etc. until the electrolyte was poured into the pond. Also, i! When injecting solution solution.

Since the empty space between the electrode plate group 1 and the battery cell partition wall is filled with a hollow cylindrical body 4 filled with compressed air, etc., there is no need to store a large amount of electrolyte.

It became possible to reduce the weight of the battery.The results are shown in Table 1.
This is shown.

Chapter 1 Table In terms of electrolyte weight, let the conventional product be 100.

In the product of the present invention, the battery weight is 80 to 85.

The weight of the product of the present invention was reduced to 92-95 compared to the conventional product of 1001. Furthermore, since the pressurization of the electrode plate group 1 can be set at 5 to 20/dmI, it has become possible to significantly improve the life performance. The life performance is shown in Figure 5I. Comparing the inventive product and the conventional product (initial capacity is +o'o1% compared to the conventional product)
In this case, the product of the present invention is excellent at 105 (%), and the number of charge/discharge tests for the conventional product is around 300, while the product of the present invention is overwhelmingly superior at around 400 times.

As mentioned above, the first aspect of the present invention is! Is it possible to significantly reduce the weight of the pond and improve its life performance?

Its industrial value is enormous.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a group of electrode plates that can be wound around a hollow cylindrical body in Embodiment 1 of the present invention, Fig. 2 is a perspective view of the hollow cylindrical body used in this embodiment, and Fig. 3 is the same. It indicates "shil", (
a) is a partially cutaway perspective view. Ib) is a sectional view taken along the line A-A' in (aJ), FIG. 4 shows a conventional battery case, (a) is a partially cutaway perspective view, and (b)
) is a sectional view taken along the line BB' in (a), and FIG. 5 is a curve diagram comparing the life performance characteristics of a conventional lead-acid battery and a lead-acid battery of the present invention. 1 is a group of electrode plates, and 4 is a hollow cylindrical body. 6 is turtle camellia

Claims (1)

[Claims] An electrode plate group consisting of anode and cathode plates and a separator plate is wound around a hollow cylindrical body made of flexible and oxidation-resistant resin film, etc., and the electrode plate group is inserted into a battery case and compressed into the hollow cylindrical body. A lead-acid battery characterized by enclosing air and pressurizing a group of electrode plates.