JPS60133667A - Manufacture of sealed type lead storage battery - Google Patents

Abstract

PURPOSE:To obtain a cathode absorption type sealed type lead storage battery with a simple process by supplying the required amount of an electrolyte in the battery previously and then injecting acid resistant and non-oxidizable spherical or hollow spherical bodies with a diameter of less than 100mum. CONSTITUTION:An electrolyte 3 required for a battery jar 2 that houses an assembled element 1 assembled by an assembly process is first injected. Then, for example, the preset number of spherical bodies 4 of approximately 30mum made of alkali-containing glass with acid resistance and oxidation resistance are injected. After that, a finished battery is obtained by making a battery to pass through an initial charging process and mounting a valve body on liquid pouring port. As a result, the electrolyte can be solidified without gel and a mat body and liquid pouring is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a cathode absorption type sealed lead acid battery.

There are currently two types of cathode absorption type sealed lead-acid batteries: the Kel type, in which the electrolyte is gelled, and the retainer type, in which the electrolyte is impregnated and retained in a mat made of pressed alkali-containing short fibers. A characteristic feature of the battery is that there is no fluid free liquid outside the electrode assembly. However, the following problems have occurred in the production of such batteries.

With the gel type, ■ After the first charge, the electrolyte is drained and the gel is injected, which increases the number of processing steps. In addition, the area around the injection port becomes dirty due to the discharged electrolyte, so washing with water or the like is required.

■ Gel does not penetrate uniformly between the electrode plates and traps air bubbles.

When these bubbles exist on the surface of the electrode plate, the area is covered with electrolyte (
(gel layer) is cut off and the performance of the heavy oil is impaired.

In the case of retainer type ■ In the electrolyte injection process prior to the first charge, if the electrolyte is injected rapidly, the gas produced by the chemical reaction will make it difficult for the electrolyte to penetrate into the mat body, making it impossible to inject the required amount. , a hot liquid is also produced.

■ There is a risk that the free liquid inside the battery after injection may leak during use.

■ Requires man-hours to assemble the mat body into the battery.

The present invention solves the above-mentioned manufacturing problems of conventional products.

An embodiment will be described below with reference to FIG.

Figure (411) Next, a predetermined amount of spheres 4 of about 30 μm made of alkali-containing glass having acid and oxidation resistance are injected [first
Figure (ol).Then it comes to rest [Figure 1 (c)].

The internal state seen from the thickness direction of the electrode plate group during this operation is shown in the second diagram.
Even if there is a corrugated perforated plate 5 that prevents contact between the 1° and θ electrode plates as shown in the figure, the liquid penetrates first, and the spheres 4 that are injected later travel through the liquid part. It penetrates into the electrode group [Figure 2 (b)].

Since the sphere 4 has a diameter of about 30 μm, it is arranged so as to absorb the irregularities on the surface of the electrode plate.

Regarding the size of the sphere 4, it is sufficient that the diameter is 100 μm or less; if it is larger than this, it will not be arranged so as to absorb the irregularities on the surface of the electrode plate.

Thereafter, as shown in FIG. 1, the battery undergoes an initial charging process, and a valve body is attached to the liquid inlet to form a completed battery.

In the battery according to the present invention, the electrolyte can be immobilized without using a gel or a mat body. Since it is easy to add V liquid to L, the above-mentioned drawbacks of the prior art can be completely solved.

As described above, according to the present invention, the electrolyte is fixed, there is no leakage, and the electrochemical reaction between the electrode plates and the electrolyte is sufficiently carried out, improving the battery performance and simplifying its manufacture. It has great industrial value.

[Brief explanation of the drawing]

FIG. 1 shows the manufacturing state of a sealed lead-acid battery according to an embodiment of the present invention, in which (a) a liquid injection state, (b) a two-sphere injection state, and (c) a stationary state of the battery. Figure 2 also shows the manufacturing state of the T1-cell as seen from the thickness direction of the electrode plate group, (a) shows the permeation state of the electrolyte, and (b)
are explanatory diagrams of each state of penetration of the sphere. 2 is a battery container, 3 is an electrolyte, and 4 is a sphere (a) (a) Figure 1 C port) (c) r. Ha

Claims (1)

[Claims] Pour the required amount of electrolyte into the battery in advance, and after tightening,
A method for manufacturing a sealed lead-acid battery, characterized by injecting spheres or hollow spheres having acid and oxidation resistance of 00 μm or less.