JPS6039975Y2 - Injectable air battery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid-filled air battery that operates by injecting electrolyte or water into a battery case.

This type of battery consists of an air electrode placed on the side of the battery case and a zinc electrode hanging from the lid of the battery case. It is activated by installing a solid alkaline plate in the tank and injecting a predetermined amount of water into it.It has an extremely long shelf life and is suitable as an emergency power source, but on the other hand, once the liquid is injected, its self Since the discharge is large, it is necessary to discharge it completely in a short period of time.

Now, the most basic problems with this type of battery are that because it uses an air electrode, it discharges after injection, the electrolyte leaks from the air electrode when left unused, and the electrolyte is a highly concentrated alkaline solution, which can be dangerous. This makes it extremely difficult to handle when disposing of the battery after discharge is complete.

The present invention was developed with these points in mind, and its gist is to adsorb the electrolyte and increase the amount of adsorption over time until the electrolyte is completely adsorbed. , the solidifying agent is integrally molded on the surface of the zinc electrode, which suppresses liquid leakage from the air electrode after injection, and also prevents liquid from remaining in the battery case after completion of discharge, making it easier to handle when disposing of the battery. The purpose is to make it safe and easy.

As the electrolyte solidifying agent mentioned above, Chemicolime (trade name), whose main component is calcium-aluminum and belongs to hydraulic cement, is suitable.

Due to the presence of this solidifying agent, CaO+H20-Ca (OH
) Due to the second reaction, water is adsorbed over time, and in the end, the electrolyte is completely adsorbed and solidified.

An embodiment of the present invention will be described below in detail based on the drawings.

1, 1 are air electrodes arranged on both sides of the battery case 2, 3, 3 are zinc electrodes installed vertically from the battery case lid 4, and each room in the battery case is partitioned by a central partition wall 5. An electrolytic solution solidifying agent 6 is integrally molded on the back side not facing the air electrode.

Reference numeral 7.7 denotes a bag-shaped separator surrounding the zinc electrode, and numerals 8 and 8 denote hard potash plates, which are disposed between the zinc electrode and the central partition wall.

Reference numeral 9 denotes a liquid storage tank containing a predetermined amount of water 10, and a liquid supply cylinder 12 is formed on the bottom surface of the tank to be screwed into a liquid passage hole 11 provided in the container lid 4. The opening surface of 12 is a thin film 1 that is destroyed by a cutting blade 13 provided at the lower part of the liquid passage hole.
4, it is always blocked.

Reference numeral 15 indicates a zero bulb attached to one side of the battery case, and is electrically connected to the air electrode and the zinc electrode.

In such a configuration, when in use, when the liquid storage tank 9 is rotated and the liquid supply cylinder 12 is screwed into the liquid passage hole 15, the thin film 14 is destroyed by the cutting blade 13 and the water in the liquid storage tank is drained into the battery container. is injected into.

As a result, the potash solid plates 8, 8 are dissolved to form an alkaline electrolyte of a specified concentration, which generates electricity and lights up the miniature bulb 15, serving as an illumination lamp.

As the discharge progresses, the electrolytic solution is gradually adsorbed by the solidifying agent and solidified, until finally no liquid remains in the battery case.

As a result of experiments, it was confirmed that the electrolytic solution was completely solidified about 10 days after the end of discharge under conditions of a temperature of 20° C. and a humidity of 50%.

The amount of solidifying agent is 1g of solidifying agent adsorbs approximately 2cc of electrolyte.
It is adjusted as appropriate based on the possibility of solidification.

According to the battery structure of the present invention, electrolyte A is adsorbed and solidified as the discharge progresses, so the liquid pressure to the air electrode is reduced and leakage from the air electrode is suppressed.

Since the B electrolyte solidifying agent does not take part in the battery reaction and increases the internal resistance, it is undeniable that the battery performance deteriorates. In contrast, in the case of the present invention, which is integrally molded on the surface of the zinc electrode, the adsorption effect of the electrolyte is carried out in close contact with the zinc electrode, so the discharge characteristics of the zinc electrode are not extremely deteriorated. As shown in the example, in a battery having a structure using a pair of air electrodes and a zinc electrode, it is more advantageous to integrally mold the zinc electrode on the back side that does not face the air electrode.

After C discharge is completed, there is no liquid in the battery container, so it has various practical effects such as being able to be easily and safely disposed of without any danger.

[Brief explanation of the drawing]

The drawings all show the battery of the present invention, and Figure 1 is a perspective view, Figure 2 is a perspective view, and Figure 2 is a perspective view.
The figure is a vertical cross-sectional view before discharge, and FIG. 3 is a vertical cross-sectional view after the electrolyte has been adsorbed and solidified by a solidifying agent after discharge. 1... Air electrode, 2... Battery case, 3...
...Zinc electrode, 4...Battery container lid, 6...
Electrolyte solidifying agent, 7...Separator, 9...
...Liquid storage tank.

Claims (1)

[Scope of utility model registration request] It is equipped with an air electrode arranged on the side of the battery case and a metal cathode, and is operated by injecting electrolyte or ice, and the electrolyte is adsorbed onto the surface of the metal cathode over time. A liquid injection type air battery made by integrally molding a solidifying agent.