JPS5836835B2 - Manufacturing method for air dry batteries - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an air dry cell, and in particular to a method for manufacturing a rectangular parallelepiped air dry cell. By sandwiching the separator (frame), inserting it into the insertion frame, and pushing it with the insertion rod into the battery case, short circuits caused by contact between the cathode current collector lead wire taken out from the back of the cathode body and the anode mixture can be prevented. In addition, the filling width of the filler for preventing drying of the cathode body is made uniform, and the anode mixture suction area is made constant.

Conventionally, rectangular parallelepiped air batteries have been manufactured by the method shown in FIGS. 1 and 2.

That is, to the left and right reaction surfaces of a rectangular parallelepiped anode mixture 1 that has been shaped into a predetermined size using a resin mold, a concentration lead wire 3 made of copper or the like is soldered to the back of a zinc plate, and the entire back surface is coated with wax or the like to prevent corrosion. A cathode body 2, which is a cathode that has been prevented from causing damage and is wrapped in wrapping paper or the like, is arranged, and as shown in FIG.

At that time, at the interface 9 between the anode mixture 1 and the insertion rod 6, the anode body 2
If the insertion rod 6 protrudes over the upper surface of the cathode body 2, or if the insertion rod 6 is used repeatedly, the insertion rod 6 may become dirty and stain the upper part of the cathode body 2, and the anode mixture 1 may cause a short circuit with the current collection lead wire 3.

In addition, in order to prevent the upper surface of the cathode body 2 from drying out, a filler such as wax was poured onto the upper surface of the cathode body 2 and part of the upper surface of the mixture 1 at an angle in the battery case, but the width of the filling was inconsistent. This made the area of the anode mixture suction surface uneven, which inhibited air diffusion.

The present invention aims to improve these drawbacks,
An explanation will be given with reference to drawings showing examples thereof.

3 to 8 show the shape of the isolation frame according to the present invention, which is molded from a composite resin such as polyethylene, ABS resin, or styrene by injection molding.

Next, FIG. 9 shows the assembled state of the battery with the isolation frame arranged.

Cathode bodies 2 are arranged on both left and right sides of an anode mixture 1 having a recessed part on the upper surface into which an isolation frame 10 can be fitted, and the isolation frame 10 is fitted into the recessed part of the anode mixture 1.

This is inserted into the insertion frame 5 and pushed into the battery case 4 by pushing it in the direction of 7 using an insertion rod 6 which has a recess 11 in advance so that the isolation frame 10 does not come into contact with it.

Next, FIG. 10 shows the state after insertion.

A filler such as wax is filled in the space between the isolation frame 10 and the battery case 4 to prevent the cathode body 2 from drying out.

A comparison of the short-circuit occurrence rates between Battery A using the isolation frame of the present invention and conventional Battery B was as shown in the table below.

100 of each battery were tested.

As is clear from this table, no short circuit occurred in the battery of the present invention, demonstrating the effect of the isolation frame.

In the discharge test, the higher the discharge current, the greater the variation in conventional batteries, but the battery of the present invention had less variation than the conventional battery.

As described above, according to the present invention, short circuits are less likely to occur between the top surface of the anode mixture and the top surface of the cathode body during battery manufacturing.
It also makes it easier to assemble the battery.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the assembly of a conventional air dry battery, FIG. 2 is a diagram showing the assembled state, FIGS. 3 to 8 are diagrams showing respective embodiments of the isolation frame used in the present invention, and FIG. The figure shows the assembly of the air dry battery of the present invention, and FIG. 10 shows the assembled state. 1... Anode mixture, 2... Cathode body, 3.
... Lead plate for current collection, 4 ... Battery case, 8.
...Filling, 10...Isolation frame.

Claims (1)

[Claims] 1 A cathode body is stacked on the side of a block-shaped anode mixture via a separator, and a resin separator is fixed to the end of the top surface of the anode mixture near the cathode body in a state that protrudes from the top surface of the anode mixture to generate power. The process of assembling the element, and placing the power generation element in the insertion frame, pushing the anode mixture and the top surface of the cathode body with an insertion rod having a recess that serves as a relief for the separator, and pushing the power generation element into the battery case connected to the insertion frame. A method for producing an air dry battery, comprising the steps of: an insertion step; and a step of filling a filler such as wax into a space created between the side surface of the battery case and a separator after the insertion step.