JPS60157161A - Method for manufacturing electrode plates for lead-acid batteries - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a lead-acid battery plate, and more particularly to a method for manufacturing a lead-acid battery plate that improves the maturing method of the plate.

Plate plates for conventional lead-acid batteries are manufactured by filling a base with paste and then going through a process called an aging process. This aging process promotes the oxidation reaction of metallic lead within the paste and on the surface of the base, and The purpose is to dry the electrode plate due to heat generation.In particular, it is important to sufficiently carry out the oxidation reaction of the metal lead, as this will have a large effect on the performance of the electrode plate.

These reactions occur on the surface of metal lead, with water catalyzed by air.
: Because it is an oxidation reaction, relatively thin electrode plates (1,
0 to 2.0 m), since air enters through the filled paste, the oxidation reaction can be sufficiently carried out only by supplying air. However, in the conventional method using only air, when the thickness of the electrode plate exceeds 3M, air does not penetrate into the center of the electrode plate in the thickness direction, so that the aging reaction cannot be carried out sufficiently.

When a lead-acid battery is manufactured using an electrode plate that has gone through such an insufficient aging process, the active material of the anode plate tends to separate under certain conditions, for example, when the battery is left alone after being completely discharged. It had drawbacks.

Purpose of the Invention The purpose of the present invention is to provide a method for manufacturing an electrode plate for a lead-acid battery, which can cause a sufficient aging reaction even in a thick electrode plate to improve the characteristics of the anode plate. be.

Structure of the Invention In the manufacturing method of the present invention, a plurality of electrode plates filled with paste are stacked and stored in a container equipped with an air outlet and an outlet, and air containing ozone is introduced into the container from the air outlet. Send ff1i-
while discharging the air from the exhaust port,
The method is characterized in that the electrode plate aging process is performed.

EXAMPLES Hereinafter, a method for manufacturing a lead-acid battery electrode plate according to the present invention will be explained in detail with reference to the drawings.

FIG. 1 illustrates an embodiment of the method for producing electrode plates for lead-acid batteries according to the present invention, and FIG. 1(a) is a schematic diagram of the manufacturing apparatus used in the embodiment, and FIG. FIG. 2 is a perspective view showing a stacked state of electrode plates. In FIG. 1(a), 1 is a blower that blows air, 2 is a humidifier that controls the humidity of the blown air, 3 is a generator that generates ozone, 4 is a mixer, and the blower 1 humidifier 2, humidifier 2 and mixer 4,
The ozone generator 3 and the mixer 4 are each connected by piping. Further, 5 is an air outlet 5a above.

A container equipped with a discharge port 5b at the bottom, and the ventilation port 5 of this container.
A is connected to the mixer 4 through the blast pipe 6, and a one-way outlet pipe 7 is connected to the discharge port 5b. Inside the container 5, a mounting stand 8 with holes is provided, and on this mounting stand 8, anode plates 9 filled with paste are stacked on a rack 10.

The rack 10 includes a stand 10a and an inverted U-shaped frame 10b whose upper end is fixed to the stand 10a. It consists of a handle 10c provided at the upper end of the frame 10b. The state in which the anode plates are stacked on the rack 10 is as shown in FIG.
A plurality of piles of anode plates, in which 50 anode plates 9 after being filled into the paste 1 are stacked, are arranged on 100 racks.

A sensor 11 having an ozone detection function is installed at the outlet of the discharge pipe 7.
This sensor detects the concentration of ozone emitted during the operation, and the ozone emitted into the atmosphere is adjusted to a predetermined level.
I try to control it so that it is below the power level. That is, the signal from the sensor 11 is fed back to the ozone generator 3, thereby preventing generation of excess ozone.

Furthermore, a humidity sensor 12 is installed inside the container 5.
This signal is fed back to the humidifier 2 and the humidifier 2
The humidity is controlled to be constant.

In the example, the anode plates 9 filled with paste were stacked and stored inside the container 5, and ripening was carried out while blowing air containing ozone at a constant humidity from the air outlet 5a. At this time, the amount of air blown and the amount of ozone were controlled so that unreacted ozone would not be discharged into the atmosphere, and the humidity in the container 5 was controlled to be 70 to 85%. The results will be explained in FIGS. 2 and 3. Figure 2 shows the temperature change of the electrode plate during ripening in comparison with the conventional method.
indicates the case using the conventional method. As is clear from the figure, in the conventional method, the temperature peak due to the ripening reaction is slow and low because the ripening reaction does not occur sufficiently, whereas in the present invention, the temperature rises in about half the time of the conventional method. It reached a peak and showed a temperature about 10°C higher.

Figure 3 shows the results of a quantitative analysis of metallic lead in the paste by sampling a paste approximately 1 m thick at the center in the thickness direction from the electrode plate taken out at regular intervals.
In the figure, curve (a) is according to the present invention, curve (b)
indicates the case using the conventional method. As is clear from the figure, in the conventional method, about 10% of metallic lead remained in the center of the electrode plate without being aged, whereas in the present invention, about 2% of the residual lead remained in the center of the electrode plate.
% or less, and it became clear that the ripening reaction had progressed sufficiently to the center of the electrode plate.

Although in the explanation of the above, air is blown from above the container, it is clear that the invention is not limited to this.

According to the present invention, the ripening reaction in a relatively thick paste was able to occur up to the center of the paste. When absorbed by water, it is hydrolyzed into reactive oxygen, thereby increasing dissolved oxygen,
This is thought to be because oxygen atoms necessary for the ripening reaction are supplied to the center of the paste.

Effects of the Invention As described above, according to the method for producing a seed plate for a lead-acid battery according to the present invention, the electrode plate can be sufficiently aged and the characteristics of the lead-acid battery can be improved. It's large.

[Brief explanation of the drawing]

FIG. 1(a) is a schematic configuration diagram of an apparatus for carrying out the method of the present invention, FIG. 1(b) is a perspective view showing the laminated state of electrode plates in the same apparatus, and FIG. A diagram showing the temperature change of the plate, and FIG. 3 is a pictorial diagram showing the change in the amount of metallic lead during the aging process. DESCRIPTION OF SYMBOLS 1... Air blower, 2... Humidity conditioner, 3... Ozone generator, 5... Container, 5a... Air outlet, 5b... Discharge port, 6... Air pipe, 7... Discharge pipe, 9... Pole plate. KIP, '1CA) J Proceedings Nettj iEτq (Spontaneous) 1988 3 J] 23rd Japan Patent Office Commissioner Kazuo Wakasugi 1, Indication of case Patent application 1151482/1982, Name of invention Lead-acid battery Manufacturing method for electrode plates 3, relationship with the famous case for amendment Patent applicant (120) Shin-Kobe Electric Co., Ltd. 4, agent 6th floor, Bunzan Building, 4-31-6 Shinbashi, Minato-ku, Tokyo Akira@Sho 6, amendment The specification printed in the specified size of the content (no change in content) is amended as shown in the attached sheet.

Claims (1)

[Claims] A plurality of electrode plates filled with paste are stacked and stored in a container equipped with an air outlet and an outlet, and air containing ozone is blown into the container from the air outlet and the air is discharged from the outlet. A method for producing an electrode plate for a lead-acid battery, characterized in that the aging step of the electrode plate is carried out while the electrode plate is being discharged.