JPS6180754A - Method of producing water-activated battery - Google Patents

Abstract

PURPOSE:To mass produce plates with separators pasted on them by punching an adhesive tape at many points by means of a mold with a moving part equipped with plural punching bars and pasting the punched adhesive tape onto the surface of an anode plate or a cathode one at the same time. CONSTITUTION:Upon a mold a having a stationary part 3 with plural holes 4 and a moving part 1 equipped with plural punching bars 2, which fit and can be inserted into the holes 4, a magnesium plate 8 is set with its separator- fixable side above, and the moving part 1 is lowered along the holes 4, which are designed to play the role of a guide. Then, an adhesive tape 6 is cut in the same size as the holes 4. When the moving part is further lowered, the cut adhesive tape 6a goes down together with the tip of the punching bar 2. Thus, it is possible to paste the adhesive tape 6a onto the magnesium plate 8, and the magnesium plate 8 with a separator on it can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a battery using silver chloride, lead chloride, copper chloride, etc. as an anode.

Conventional technology Conventional batteries using magnesium or a magnesium alloy as a cathode generate insoluble substances such as magnesium hydroxide and hydrogen gas during discharge, so it is necessary to discharge these reaction products to the outside of the battery. . For this reason, a separator is provided between the anode and the anode to allow reaction products to be easily discharged, and insoluble substances are discharged together with the hydrogen gas. If this discharge is incomplete, reaction products will accumulate between the anode and the anode, resulting in insufficient electrolyte volume and increased internal resistance, making it impossible to discharge. For this reason, batteries have conventionally been manufactured using glass globules, synthetic resin rods, synthetic resin nets, or the like as separators that allow reaction products to be easily discharged to the outside of the battery.

Problems to be Solved by the Invention Various types of necessitators installed between the negative and anode electrodes have been put to practical use as described above, but each has its own drawbacks. For example, in the case of small glass spheres, they are embedded into the anode plate when they are cast, so in order to maintain a constant distance between the electrode plates, it is necessary to precisely align the position of the inset, and the diameter of the glass sphere. This method has disadvantages such as the need to keep the same number of glass beads (in addition to the fact that the glass beads embedded in the anode plate tend to fall off during assembly work in subsequent steps and must be replenished).

In addition, in the case of synthetic resin rods, they must be fixed to either the cathode or the anode using an adhesive, and the number of rods increases as the electrode plate becomes larger. This bonding work not only requires a large amount of man-hours and is extremely uneconomical, but also causes a shift in the fixing position and contamination of the electrode plates by excess adhesive, impairing the discharge performance.

Furthermore, in the case of a synthetic resin mesh, it is necessary to make it easy for reaction products to be discharged to the outside of the battery by making it uneven, etc., and it is difficult to reduce the distance between the electrode plates to 0.5 mm or less, which affects battery performance. The disadvantage was that it was not possible to keep the temperature high.

The present invention aims to eliminate the above-mentioned drawbacks.

Means for Solving the Problems The present invention uses a mold having a movable part including a fixing part with a plurality of holes and a plurality of punching rods that can be inserted closely and simultaneously into the holes, and the upper part of the fixing part is Place an adhesive tape on the top and an anode plate or a cathode plate at the bottom, lower the movable part from above the adhesive tape, punch out a large number of adhesive tapes at once, and then lower the movable part to punch out the adhesive on the surface of the anode or cathode plate. This manufacturing method is characterized by pasting tape.

Function: The hole size, hole position and number of holes in the fixing part of the above mold can be arbitrarily determined as required. It can be produced in large quantities in a short period of time.

Example An embodiment of the present invention will be described with reference to the drawings.

1 is a movable part having a punching rod 2; 3 is a fixed part having a hole 4.4' into which the punching rod 2 can be closely inserted;
Mold A is constituted by 4 and 4' and 5 and 7, which will be described later. Reference numeral 5 denotes an adhesive tape adhering stand, on which the adhesive tape 6 is applied with its shelf facing down. Reference numeral 7 denotes a plate mounting stand, for example, by placing a magnesium plate 8 with the separator attached part facing upward. Tape 6 is hole 4'
is cut to the same size. When lowered further, the cut adhesive tape 6a lowers together with the tip of the punching rod 2 and comes into contact with the magnesium electrode plate 8. By preventing the punching rod 2 from falling below the position where the adhesive tape 6a is attached to the surface of the magnesium electrode plate 8 using the stopper 9, the adhesive tape 6a can be removed from the magnesium electrode without damaging the electrode plate with the punching rod 2. A magnesium electrode plate 8 with a separator as shown in FIGS. 2 and 3 which can be attached onto the electrode plate 8 is obtained, and a battery is produced using the electrode plate 8 and the anode plate by a conventional method.

Since the shape and number of holes 44' provided in the punching rod 2 and fixed part 3 of the movable part 1 of the mold A used in the above manufacturing method can be freely designed, the size of the electrode plate, the shape of the required separator, etc. A device suitable for the number of units can be easily manufactured, and the thickness of the adhesive tape used can be freely selected.

Effects of the Invention According to the present invention, separators of the required thickness, shape, and number can be attached to an electrode plate at one time, and electrode plates with separators attached can be mass-produced in a short time, thereby improving performance. It is of great industrial value because stable batteries can be easily obtained.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the manufacturing state of a magnesium electrode plate with a separator used in a battery according to an embodiment of the present invention, FIG. 2 is a front view of a magnesium electrode plate with a separator used in a battery according to this embodiment, and FIG. 3 2 is a sectional view taken along line A-A' in FIG. 2. 1 is the movable part, 2 is the punching rod, 3 is the fixed part, 4.4' is the hole,
6 is the adhesive tape, 6a is the punched adhesive tape, 8 is the magnesium electrode plate, A is the mold a year vinegar rate 1 figure

Claims (1)

[Claims] Using a mold that has a fixed part with multiple holes and a movable part with multiple punching rods that can be inserted closely into these holes at the same time, adhesive tape is placed on the top of the fixed part, an electrode plate is placed on the bottom, and the adhesive is Lower the movable part from above the tape and punch out the adhesive tape.
A method for producing a water-injected battery, further comprising the step of simultaneously lowering a punching rod and a punched adhesive tape and attaching the punched adhesive tape to the surface of the electrode plate to provide a separator on the electrode plate.