JPH0343653Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a relatively large capacity air moist battery using an activated carbon anode and a cathode made of cast zinc or the like. Regarding improvement of the lid.

Conventional configurations and their problems Humid air batteries are used as power sources for light buoys and remote areas because they have excellent voltage flatness and can withstand long-term discharge by using a large amount of zinc cathode.

In air-humidified batteries for such applications, the weight of the cathode is large, so various improvements have been made to methods for fixing the cathode to withstand shocks during transportation and use. On the other hand, the activated carbon anode is attached to the container lid, and the anode fixing part of the container lid is filled with a sealing material such as pitch to prevent leakage of electrolyte to the intake surface side.

A battery with such a configuration had no particular problems by itself. However, when used in equipment that is subject to constant vibrations and shocks, such as light buoys, the battery needs to be immovably fixed to the equipment. In this case, it is common practice to secure the battery by placing a tightening band on the battery case lid or its anode cover. When the battery case lid is tightened with the tightening band in this way, local distortion is applied to the resin lid, which may cause the sealing material to peel off and leak, or in extreme cases, cause the anode to crack and break. Ta.

Purpose of the invention The purpose of the invention is to eliminate the above-mentioned conventional inconveniences associated with fixing batteries, and to provide an air-humidity battery that can be securely fixed to equipment without sealing failure or damage to the anode.

Structure of the invention This invention surrounds the hole in the center of the battery case lid into which the anode fits, and integrally moves the cylindrical anode cover section upward, which has air permeability on the sides and is closed at the top. A cylindrical frame piece is provided on the lower surface to protrude and form a recess for filling the sealant between the anode fitted in the hole, and a cylindrical frame piece is provided on the lower surface at a position sandwiching the anode cover part at the peripheral edge of the upper surface. The battery fixing device is characterized in that at least one pair of battery fixing protrusions that are higher than the anode cover are provided.

DESCRIPTION OF EMBODIMENTS FIG. 1 shows an example of the structure of a wet air battery according to the present invention.

1 is a battery case made of a molded polypropylene body, 2
3 is a rectangular container lid made of a polypropylene molded body, and 3 is a rectangular activated carbon anode fixed to the center of the lid 2. 4 is a support frame whose upper end is welded to the lower surface of the lid 2 and whose lower end is supported by a step 5 provided on the inner wall of the battery case, and cast zinc cathodes 6, 6 are disposed on both sides of the anode 3.
is fixed, a solid caustic potassium electrolyte 8 placed in a resin dish 7 is placed on the top, and a similar electrolyte 9 is held in the bottom. 10 is calcium hydroxide particles as an electrolyte regenerating agent placed in the bottom of the container.

Next, the battery case lid 2 will be explained in detail with reference to FIGS. 2 to 4.

The lid 2 has a rectangular hole 11 in the center into which the upper end of the anode 3 fits, and a cylindrical anode cover portion 12 with a closed top surface is provided to protrude upward so as to surround this hole. . The cover portion 12 has an inner wall tapered so that the interval becomes narrower toward the top, and a rib 13 for regulating the insertion depth of the anode 3 is provided near the entrance of the inner wall. Further, a large number of ventilation holes 14 are provided in the side wall. Reference numeral 15 denotes a cylindrical frame piece protruding from the lower surface of the lid so as to form a recess for filling a sealing material 16 such as pitch between the anode 3 fitted in the hole 11 and the anode 3 fitted in the hole 11.

Reference numerals 17 and 17 designate protrusions for fixing the battery provided on the peripheral edge side of the upper surface of the lid 2 so as to sandwich the anode cover part 12. The height thereof is higher than the anode cover part 12, and a band for fixing the battery is provided at the upper end. A recess 18 into which the wire is inserted is provided, and a hole 19 through which a string or wire is passed is provided in the center. Two pairs of protrusions 17 may be provided depending on the size of the battery.

A welding base part 20 for welding to the open end of the battery case 1 is provided protruding from the lower peripheral edge of the lid 2, and a cover covering the welded part is provided on the outside through a groove for escape of the resin of the welded part. The portion 21 is made to protrude. In addition, in order to prevent the welding position of the welding table part 20 and the battery case from shifting, a tapered projection 22 is provided on the short side of the lid 2, and a tapered protrusion 22 is provided on the short side of the lid 2, and the frame piece 15 and the welding table part are provided on the long side. 2
A plurality of reinforcing ribs 23 are provided so as to straddle the two.

In addition, two pairs of welding bases 24 are provided on the bottom surface of the lid 2 to weld the upper ends of the two sets of support frames 4, and three sides other than one outside side of the welding bases 24 are provided to prevent misalignment during welding. A protrusion 25 is provided for this purpose.

26 is a water inlet portion to which a liquid stopper 27 is attached; 28;
Reference numeral 29 is a mounting portion for positive and negative terminals.

Next, a method for assembling this battery will be explained. First, the lid 2 is turned upside down and the activated carbon anode 3 is inserted into the anode cover part 12 through the hole 11. Cover part 1
Since the inner wall of the anode 2 is tapered, the anode 3 is tightly fitted into the cover part 12 and inserted until it is regulated by the ribs 13. Next, the recess formed between the anode 3 and the frame piece 15 is filled with a sealing material 16 such as pitch to seal the leakage path toward the intake surface of the anode.

Next, after heating the upper ends of the set of support frames 4 to which the cathode 6 was fixed and the welding base portion 24 of the lid 2 with a hot plate,
Press them together and weld them together. The support frame 4 has a part that supports the lower end of the anode 3, and a resin foam 30 is attached in advance to this part. This support frame 4
After holding the electrolytes 8 and 9, the electrolytes 8 and 9 are combined into a container 1 containing an electrolyte regenerating agent 10 in advance, and heated with a hot plate between the open end of the container 1 and the welding table part 20 of the lid 2. Join both.

In the battery assembled as described above, the liquid stopper 27 is sealed, and the vent hole 14 of the cover part 12 is sealed with the tape 31. When in use, water is injected from the liquid injection port to dissolve the electrolyte, thereby generating power.

When fixing this battery, it can be firmly fixed by placing a band around the recess 18 of the protrusion 17 and tightening it to a battery box or the like.
Even if a bending force is applied to the protruding part 17 when tightening the band, since the protruding part 17 is provided integrally with the peripheral edge of the lid 2, the effect will not extend to the part of the anode cover part 12 to which the anode 3 is fixed. I won't give anything.

On the other hand, since the anode cover part 12 is lower in height than the protruding part 17, the tightening pressure by the band is not directly applied to it. In addition, activated carbon anode 3
has its upper end fitted into the lower part of the anode cover part 12, and a sealing material 16 is filled between it and the frame piece 15, so that even if vibration is applied to the battery itself, it will not be damaged, and the intake air will not be damaged. There is no risk of liquid leaking to the surface side.

Further, this battery can be suspended by passing a string or wire through the hole 19 of the protrusion 17, if necessary.

Effects of the Invention As described above, according to the present invention, it is possible to securely fix the battery to a device using a battery without causing sealing failure or damage to the anode.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing a wet air battery according to an embodiment of the present invention, Fig. 2 is a side view of the battery case lid, Fig. 3 is a bottom view of the same, and Fig. 4 is a longitudinal cross-section of the main parts of the assembly process. It is a front view. 1...Battery container, 2...Battery container lid, 3...Anode, 6...
... Cathode, 8, 9 ... Solid electrolyte, 11 ... Anode fitting hole, 12 ... Anode cover part, 13 ... Rib, 1
4...Vent hole, 15...Frame piece, 16...Sealing material,
17...Battery fixing protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A resin battery container 1, a resin lid 2 that seals the opening of the battery container, an anode 3, a cathode 6, an electrolyte 8, and an anode 3 installed in the battery container 1. 9. Electrolyte regenerating agent 10
The lid 2 has a hole 11 in the center, and has an anode cover part 12 surrounding the hole 11 on the top surface, and a pair of battery fixing protrusions sandwiching the anode cover part and protruding upward from the anode cover part 12. The anode cover part 12 is provided with a cylindrical frame piece 15 surrounding the hole 11 on the lower surface, the top part of the anode cover part 12 is closed, and a ventilation hole 14 is provided in the side part.
The anode 3 has an upper part fitted into a hole 11, and a sealing material 16 is filled between the anode and a cylindrical frame piece 15. (2) The anode cover part 12 has a taper on its inner wall that narrows the interval toward the top, and is provided with a rib 13 near the entrance of the inner wall for regulating the fitting depth of the anode 3. Utility model registration request range 1
Humid air cell as described in section.