CN218887324U - Button zinc-air battery - Google Patents

Abstract

The utility model discloses a button zinc-air battery, belonging to the field of zinc-air batteries, comprising an anode shell and a sealing ring, wherein the inner bottom surface of the anode shell is bonded with a positive plate; the positive plate comprises a polytetrafluoroethylene breathable film, catalytic layer positive electrode powder, a conductive nickel net and diaphragm paper, wherein the polytetrafluoroethylene breathable film, the catalytic layer positive electrode powder, the conductive nickel net and the diaphragm paper are arranged upwards from the bottom surface inside the positive shell; the internally mounted of sealing washer has the negative pole lid, the inside packing of negative pole lid has the negative electrode material, abduction formula U type groove has been seted up to the bottom inboard of sealing washer, sealed glue of second has been printed on the negative pole lid base, the negative pole lid bonds through sealed glue of second and the inside in abduction formula U type groove mutually, through setting the sealing washer to abduction formula U type groove for after negative pole shell and sealing washer bond, can increase the bonding area between sealing washer and the negative pole shell under the effect of abduction formula U type groove, thereby bring better sealed effect.

Description

Button zinc-air battery

Technical Field

The utility model relates to a zinc-air battery technical field specifically is a button zinc-air battery.

Background

Button zinc-air cells generally have a housing consisting of two housing halves, namely a cell cup, which is usually formed in the form of a bowl, and a cell cover, which is also usually formed in the form of a bowl, with a sealing ring fitted, whereas the positive pole of existing zinc-air button cells is in the positive casing, the sealing ring is arranged in a bottom U-shaped configuration, the negative cover is on its reverse side in a U-shaped groove, and a sealant is arranged in the U-configuration.

As in application No.: CN201621293615.9 discloses a zinc-air button cell, which provides a zinc-air button cell with simple structure, low internal resistance and large discharge capacity.

However, the following technical defects of the device are still to be solved:

the battery is sealed by mechanical pressure after being assembled to form a sealing structure, so that the volume of the U-shaped groove of the sealing ring is small, the amount of the stored sealing glue is not large, and a good sealing effect cannot be formed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a button zinc-air battery is through setting the sealing washer to abduction formula U type groove for after negative pole shell and sealing washer bonded, can increase the bonding area between sealing washer and the negative pole shell under the effect of abduction formula U type groove, thereby bring better sealed effect, take place with the phenomenon that prevents the weeping, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a button zinc-air battery comprises an anode shell and a sealing ring, wherein a positive plate is bonded on the inner bottom surface of the anode shell;

the positive plate comprises a polytetrafluoroethylene breathable film, catalytic layer positive electrode powder, a conductive nickel net and diaphragm paper, wherein the polytetrafluoroethylene breathable film, the catalytic layer positive electrode powder, the conductive nickel net and the diaphragm paper are arranged upwards from the bottom surface inside the positive shell;

the inside mounting of sealing washer has the negative pole lid, the inside packing of negative pole lid has the negative electrode material, the bottom inboard of sealing washer has seted up abduction formula U type groove, sealed second glue of gluing has been printed on the negative pole lid base, the negative pole lid bonds mutually through sealed glue of second and the inside in abduction formula U type groove.

Preferably, the bottom surface of the positive electrode shell is provided with an air hole, and a sealing sticker for sealing is bonded on the bottom surface of the positive electrode shell.

Preferably, the diffusion paper is bonded to the inner bottom surface of the positive electrode can by an adhesive.

Preferably, the bottom surface of the interior of the positive electrode shell is coated with a first sealant, the bottom surface of the polytetrafluoroethylene breathable film is bonded to the bottom surface of the interior of the positive electrode shell through the first sealant, and the bottom of the positive electrode shell is bonded to form an integrated structure.

Preferably, the catalytic layer cathode powder adopts a porous structure.

Preferably, a bevel edge is arranged on a side section, close to the negative electrode cover, of the outward-extending U-shaped groove of the sealing ring.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a knot formula zinc-air battery sets the insulating collar in the battery group to abduction formula U type structure, and is the hypotenuse on one side at the inboard insulating collar tangent plane of negative pole lid, can place more sealed glues of second in U type groove, increases the bonding area of contact of negative pole lid and rubber ring, improves zinc-air battery liquid leakage resistance ability.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the zinc-air battery of the present invention;

fig. 2 is a schematic structural view of the positive plate of the present invention;

fig. 3 is a schematic structural view of the sealing ring of the present invention.

Reference numbers in the figures: 1. a positive electrode case; 2. air holes; 3. sealing the paster; 4. diffusion paper; 5. a first sealant; 6. a polytetrafluoroethylene gas-permeable membrane; 7. catalytic layer positive electrode powder; 8. a conductive nickel mesh; 9. a separator paper; 10. a seal ring; 11. a second sealant; 12. a negative electrode cover; 13. a negative electrode material; 14. an outward-extending U-shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The utility model provides a button zinc-air battery as shown in figures 1-3, which comprises an anode shell 1 and a sealing ring 10, wherein the inner bottom surface of the anode shell 1 is bonded with a positive plate;

the positive plate comprises a polytetrafluoroethylene breathable film 6, catalytic layer positive electrode powder 7, a conductive nickel net 8 and diaphragm paper 9, wherein the polytetrafluoroethylene breathable film 6, the catalytic layer positive electrode powder 7, the conductive nickel net 8 and the diaphragm paper 9 are arranged upwards from the bottom surface inside the positive shell 1;

the inside bottom surface of positive plate 1 scribbles first sealed glue 5, and the bottom surface of polytetrafluoroethylene ventilated membrane 6 bonds on the inside bottom surface of positive plate 1 through first sealed glue 5, and 1 bottom of positive plate bonds and forms the integral structure, through setting up the first sealed 5 structures of gluing of one deck for the positive plate forms the integral structure with positive plate 1, and first sealed glue 5 is Teflon heat-cure glue.

The catalytic layer anode powder 7 is composed of activated carbon, conductive carbon, manganese oxide, metal oxide and polytetrafluoroethylene, and the catalytic layer anode powder 7 is of a porous structure.

The internally mounted of sealing washer 10 has negative pole lid 12, the inside packing of negative pole lid 12 has negative electrode material 13, abduction formula U type groove 14 has been seted up to the bottom inboard of sealing washer 10, sealed glue 11 of second has been printed on the bottom edge of negative pole lid 12, negative pole lid 12 bonds through sealed glue 11 of second and the inside of abduction formula U type groove 14 mutually, a side tangent plane that abduction formula U type groove 14 of sealing washer 10 is close to negative pole lid 12 sets up to the hypotenuse, can place more sealed glues in abduction formula U type groove 14, increase the adhesive contact area of negative pole lid 12 and sealing washer 10, improve the resistant weeping ability of zinc-air battery.

The bottom surface of the positive electrode shell 1 is provided with an air hole 2, a sealing sticker 3 for sealing is adhered, and the bottom surface of the inner part of the positive electrode shell 1 is adhered with a diffusion paper 4 through an adhesive.

During assembly, coating an adhesive on the positive electrode shell 1, pasting the diffusion paper 4 on an air hole at the bottom of the positive electrode shell 1, coating a first sealant 5 at the bottom of the positive electrode shell 1, punching the positive electrode plate into a round cake, filling the positive electrode plate into the positive electrode shell 1, and bonding one side of the polytetrafluoroethylene breathable film 6 with the bottom of the positive electrode shell 1 to form an integrated structure; meanwhile, the bottom edge of the negative electrode cover 12 is printed with a second sealant 11 and combined with an expanding U-shaped sealing ring 10, zinc powder is placed into the negative electrode cover 12, negative electrode liquid is injected, a negative electrode cover 12 and sealing ring 10 combination body filled with a negative electrode material 13 is placed into the positive electrode shell 1, then the opening end of the positive electrode shell 1 is sealed to form an R position and is in contact connection with the insulating rubber ring and the reverse edge of the negative electrode cover 12, the rubber ring is prevented from being damaged by stepping on the sealing ring 10 due to high pressure when the battery is sealed, and then a sealing sticker 3 is pasted on an air hole 2 of the positive electrode shell 1 of the battery.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a button zinc-air cell, includes positive pole shell (1) and sealing washer (10), its characterized in that: the inner bottom surface of the positive electrode shell (1) is bonded with a positive electrode plate;

the positive plate comprises a polytetrafluoroethylene breathable film (6), catalytic layer positive electrode powder (7), a conductive nickel net (8) and diaphragm paper (9), wherein the polytetrafluoroethylene breathable film (6), the catalytic layer positive electrode powder (7), the conductive nickel net (8) and the diaphragm paper (9) are arranged upwards from the bottom surface inside the positive shell (1);

the inside mounting of sealing washer (10) has negative pole lid (12), the inside packing of negative pole lid (12) has negative electrode material (13), abduction formula U type groove (14) have been seted up to the bottom inboard of sealing washer (10), negative pole lid (12) base is printed on and is sealed glue (11) by the second, negative pole lid (12) are sealed glue (11) and are bonded mutually through the inside of abduction formula U type groove (14) by the second.

2. The button zinc-air cell as defined in claim 1, wherein: the bottom surface of the positive electrode shell (1) is provided with an air hole (2), and a sealing paster (3) for sealing is bonded on the bottom surface.

3. The button zinc-air cell as defined in claim 1, wherein: the bottom surface of the interior of the positive electrode shell (1) is bonded with diffusion paper (4) through an adhesive.

4. The button zinc-air cell as defined in claim 1, wherein: the inside bottom surface of positive shell (1) scribbles first sealed glue (5), the bottom surface of polytetrafluoroethylene ventilated membrane (6) bonds on the inside bottom surface of positive shell (1) through first sealed glue (5), and positive shell (1) bottom bonds and forms integrated structure.

5. The button zinc-air cell as defined in claim 1, wherein: the catalytic layer anode powder (7) adopts a porous structure.

6. The button zinc-air cell as defined in claim 1, wherein: the section of one side of the outward U-shaped groove (14) of the sealing ring (10) close to the negative cover (12) is set to be a bevel edge.

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