JPH0564422B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a sintered electrode plate for an alkaline storage battery, in which a sintered substrate is filled with an active material.

[Prior Art] Generally, in a sintered electrode plate for an alkaline storage battery, as shown in FIG. ,
Next, an electrolytic treatment is performed in an electrolytic step 2. The sintered substrate that has been electrolytically treated in this way is then subjected to water washing step 3.
After washing with water, the sintered substrate is dried in a drying step 4. Through these impregnation step 1, electrolysis step 2, washing step 3, and drying step 4, the sintered substrate is subjected to one active material filling unit step 5. Therefore, in order to fill the sintered substrate with a sufficient amount of active material, the active material filling unit process 5 must be performed several times.

Therefore, conventionally, in order to repeat the active material filling unit process 5 several times, the active material filling unit process 5 is carried out along a linear production line 6 as shown in FIG.
This process was repeated to sequentially fill the sintered substrate with active material. In addition, in each of these steps 5, the sintered substrate is immersed in each of the active material salt solution bath, electrolytic bath, and water washing bath. In this case, as shown in FIG. Band-shaped sintered substrate 8
was bent vertically and inserted into the corresponding tank 9.

[Problems to be Solved by the Invention] However, in the conventional manufacturing method described above, since the manufacturing line 6 in which the active material filling unit process 5 is repeated is linear, each processing liquid tank and drying device in each process 5 are sequentially installed. Therefore, the conditions such as the temperature and concentration of the salt solution of the active material, the conditions of electrolytic treatment, the conditions such as the amount of water in washing treatment, and the conditions of drying treatment must be adjusted individually. There was a problem that the number of control devices needed to be controlled increased, and the manufacturing equipment became expensive. Moreover, there was a problem in that the working conditions in each process were likely to differ, making it difficult to effectively control quality.

An object of the present invention is to be able to construct a manufacturing device at low cost;
Moreover, it is an object of the present invention to propose a method for manufacturing sintered electrode plates for alkaline storage batteries that allows for effective quality control.

[Means for solving the problems] The present invention is illustrated in FIGS. 1 and 2 showing one embodiment thereof.
To explain with reference to the figure, on the strip-shaped sintered substrate 8,
The active material filling unit step 5 is repeated several times along the production line 6, in which the active material is impregnated with a salt solution, sequentially electrolyzed, washed with water, and then dried. A method for manufacturing a sintered substrate for an alkaline storage battery, in which a sintered substrate 8 is filled with an active material by repeatedly carrying out material filling operations,
In the present invention, the production line 6 is formed into a spiral shape, and the active material filling operation by each active material filling unit process 5 is repeated along the spiral production line 6.
Each of the active material filling unit steps is performed by a shared device disposed across the overlapping line portions of the spiral production line 6, and the sintered substrate 8 is erected with its plate surface 8a. and sent to each active material filling unit process 5.

[Function] With the above method, the active material filling operation in the active material filling unit process 5 is repeatedly performed on the sintered substrate 8 along the spiral production line 6, and the active material filling operation is repeatedly performed on the sintered substrate 8 along the spiral production line 6, and the overlapping line portions of the spiral production line 6 are straddled. Since each process is carried out using shared equipment located in the same location, the working conditions are the same, quality control can be carried out effectively, and the manufacturing equipment can be configured at low cost since there are fewer control devices. .

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

First, the state in which the strip-shaped sintered substrate is inserted into the processing liquid tank in each processing step of the manufacturing method of the present invention will be explained. As shown in FIG. 2, two vertically extending slits 13 are formed in a pair of mutually opposing side walls 12 of the processing liquid tank 11, and each slit 1
The sintered substrate 3 is fed in either direction of the arrow through a band-shaped sintered substrate 8 having a raised plate surface 8a. In this case, the member constituting the slit 13 is an elastic body 14 such as rubber fitted into the side wall 12. The number of slits 13 formed in the processing liquid tank 11 is determined by the number of sintered substrates 8 to be fed, and the number is arbitrary.

Next, a method of filling the active material into the strip-shaped sintered substrate 8, which is fed with the plate surface 8a erected, will be explained. In the manufacturing method of the present invention, as shown in FIG. 1, the manufacturing line 6 is arranged in a spiral shape. This production line 6 includes an impregnation process 1, an electrolytic process 2,
The active material filling operation in the active material filling unit process 5 consisting of the water washing process 3 and the drying process 4 is performed several times in succession. Therefore, in such a manufacturing line 6, in order to fill the sintered substrate 8 with the active material, first, in the impregnation step 1, the active material salt solution bath 21 is filled.
A strip-shaped sintered substrate 8 is inserted into the sintered substrate 8. (At this time, when molding an anode plate, the sintered substrate 8 is immersed in a saturated solution of nickel nitrate; when molding a cathode plate, the sintered substrate 8 is immersed in a saturated solution of cadmium nitrate or cadmium chloride. ) Next, the sintered substrate 8 is inserted into the electrolytic bath 22 of the electrolytic step 2. (At this time, the anode plate is subjected to electrolytic oxidation treatment, and the cathode plate is subjected to electrolytic reduction treatment.) The electrolytically treated sintered substrate 8 is then inserted into the washing tank 23 of washing step 3 and washed with water. The sintered substrate 8 that has been washed with water is dried by the drying device 24 in the drying step 4. In this way, when the first active material filling unit step 5 is completed, the active material filling operation is performed several times in succession in the subsequent active material filling unit step 5 to complete the active material filling operation on the sintered substrate 8. .

When such active material filling work is performed on the spiral production line 6, the active material salt solution tank 21, electrolytic tank 22, and water washing tank 23 are used as common equipment so as to straddle the overlapping line parts. Drying device 24
and place the sintered substrate 8 in these tanks 21 and 2.
2, 23 and the device 24 to perform the active material filling operation in the active material filling unit process 5 a predetermined number of times.

In the above embodiment, since the vertical slits 13 are formed in each processing liquid tank, the processing liquid may spill out to the outside. It is preferable that the processing liquid is returned to the processing liquid tank.

[Effects of the Invention] As described above, according to the present invention, the active material filling operation in the active material filling unit process is repeated on the sintered substrate along the spiral production line, and the overlapping line portions of the spiral production line are Since each process is carried out using shared equipment located across multiple locations, the working conditions are the same and quality control can be carried out effectively.In addition, the number of control devices is reduced, making manufacturing equipment cheaper. Can be configured.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of an apparatus for implementing the manufacturing method of the present invention, FIG. 2 is an explanatory diagram showing a state in which a sintered substrate is inserted into each treatment liquid tank in the manufacturing method of the present invention, and FIG. 3 and FIG. 4 are explanatory diagrams showing the conventional manufacturing method, respectively, and FIG. 5 is an explanatory diagram showing a state in which a sintered substrate is inserted into each treatment liquid tank in the conventional manufacturing method. 1... Impregnation process, 2... Electrolysis process, 3... Water washing process, 4... Drying process, 5... Active material filling unit process, 6... Manufacturing line, 8... Band-shaped sintered substrate,
8a...Plate surface of a strip-shaped sintered substrate.

Claims (1)

[Claims] 1. An impregnation step in which a strip-shaped sintered substrate is impregnated with a solution of a salt of an active material, and an electrolytic treatment is performed on the sintered substrate impregnated with a solution of a salt of an active material in the impregnation step. The active material filling process is carried out along the manufacturing line as an active material filling unit process including an electrolytic process, a washing process of washing the electrolytically treated sintered substrate with water, and a drying process of drying the sintered substrate after the washing process. In a method for manufacturing a sintered substrate for an alkaline storage battery, in which the sintered substrate is filled with the active material by repeating the active material filling operation by repeating a unit process multiple times, the manufacturing line is formed into a spiral shape and the spiral shape is The active material filling operation in each of the active material filling unit steps is repeated along the production line, and each of the active material filling units is filled by a shared device disposed astride the overlapping line portions of the spiral production line. A method for manufacturing a sintered electrode plate for an alkaline storage battery, characterized in that each of the steps is performed, and the sintered substrate is sent to each of the active material filling unit steps with its plate surface erected.