阅读说明：本技术 空气电池及空气电池组 (Air battery and air battery pack ) 是由 胡铭昌 薛建军 周雪晴 陈玮 尹爱中 薛江丽 于 2021-03-01 设计创作，主要内容包括：本发明提供一种空气电池及空气电池组,涉及电池的技术领域,该空气电池包括正极壳体、负极壳体和正极片,所述正极壳体与所述负极壳体固定连接并配合形成所述电池壳体；在所述凸起长条上设置有至少一个负极凹槽,且所述负极凹槽能够与所述正极壳体形成限气孔。本发明提供的空气电池的负极壳体具有负极凹槽,当多个空气电池组成空气电池组的时候,负极壳体能够插入到正极壳体的正极凹槽内,且负极壳体的凸起长条上的负极凹槽与正极壳体形成限气孔,从而在保证正极片与空气有足够的接触面积的情况下,降低空气的流速,有效地减缓负极反应物锌膏吸收空气的二氧化碳和水分,增加该空气电池的使用寿命。(The invention provides an air battery and an air battery pack, and relates to the technical field of batteries, wherein the air battery comprises a positive electrode shell, a negative electrode shell and a positive electrode plate, wherein the positive electrode shell is fixedly connected with the negative electrode shell and matched with the negative electrode shell to form the battery shell; at least one negative electrode groove is arranged on the protruding strip, and the negative electrode groove can form a gas limiting hole with the positive electrode shell. When a plurality of air batteries form an air battery pack, the negative electrode shell can be inserted into the positive electrode groove of the positive electrode shell, and the negative electrode groove on the long protruding strip of the negative electrode shell and the positive electrode shell form an air limiting hole, so that the flow rate of air is reduced under the condition that the positive electrode plate and the air have enough contact area, the carbon dioxide and moisture of the air are effectively reduced, the absorption of the negative electrode reactant zinc paste into the air is effectively slowed, and the service life of the air battery is prolonged.)

1. The air battery is characterized by comprising a positive electrode shell (100), a negative electrode shell (200) and a positive electrode plate, wherein the positive electrode shell (100) and the negative electrode shell (200) are fixedly connected and matched to form a battery shell, and the positive electrode plate is positioned in the battery shell;

-providing the positive electrode casing (100) with a gas permeable area in which a plurality of vent holes (300) for air to enter the battery casing are provided;

a positive electrode groove (400) capable of accommodating the negative electrode shell (200) is formed in one side, far away from the negative electrode shell (200), of the positive electrode shell (100);

a long protruding strip (900) is arranged on one side of the negative electrode shell (200) far away from the positive electrode shell (100) and along the edge of the negative electrode shell (200);

at least one negative electrode groove (110) is arranged on the protruding strip (900), and the negative electrode groove (110) and the positive electrode shell (100) can form a gas limiting hole (120).

2. The air battery according to claim 1, wherein a plurality of limiting bosses (500) are provided on the side wall of the positive electrode groove (400), and the plurality of limiting bosses (500) are used for fixing the negative electrode case (200);

and a buffer area (600) is formed among the limiting bosses (500), and the buffer area (600) is used for accommodating the deformation of the negative electrode shell (200).

3. The air battery according to claim 1, wherein the positive electrode case (100) and the negative electrode case (200) are connected by a snap fit.

4. The air battery according to claim 1, wherein 8-16 negative electrode grooves (110) are provided on the protruding strip (900).

5. The air battery according to claim 1, wherein the negative electrode groove (110) has a semicircular cross section along the direction of projection of the projection strip (900).

6. An air battery according to claim 5, characterized in that the diameter of the negative recess (110) is 3-6 mm.

7. The air battery according to claim 1, wherein the air-permeable region includes a plurality of inner grooves (800), the vent hole (300) for air to enter the inner groove (800) being provided in the inner groove (800);

and a communicating groove (700) is arranged between the adjacent inner grooves (800), and the communicating groove (700) and the positive plate form an exchange hole for exchanging air flows between the adjacent inner grooves (800).

8. The air battery according to claim 7, wherein the ventilation region is provided with 100-300 inner grooves (800), and the diameter of the ventilation hole (300) arranged in the inner groove (800) is 2-5 mm.

9. An air battery comprising a plurality of air cells according to any one of claims 1 to 8.

10. The air battery according to claim 9, wherein one end of the negative electrode case (200) of the air battery is inserted into the positive electrode groove (400) of the positive electrode case (100) of the adjacent air battery.

Technical Field

The invention relates to the technical field of batteries, in particular to an air battery and an air battery pack.

Background

Because the positive pole reactant of zinc-air battery is oxygen from the air, need not store in the battery, and the negative pole reactant is zinc powder, consequently zinc-air battery possesses energy density height, and discharge voltage is steady, and the security is high, advantages such as low price environmental protection, and it is the key of electrochemical field research concern always as novel portable power, energy memory and alarm power.

The zinc-air battery needs oxygen in the air to participate in the reaction, so that the zinc-air battery cannot be contacted with the air; however, the cathode reactant, namely the zinc paste, is easy to absorb carbon dioxide in the air to react to generate potassium carbonate, so that the conductivity is reduced, the zinc paste is easy to absorb moisture in the air to lose efficacy when the environmental humidity is too high, and the zinc paste is easy to lose moisture to lose efficacy when the environmental humidity is too low.

Disclosure of Invention

The invention aims to provide an air battery and an air battery pack so as to solve the technical problem that the air battery is easy to lose effectiveness under the influence of carbon dioxide and humidity.

The invention provides an air battery which comprises a positive electrode shell, a negative electrode shell and a positive electrode plate, wherein the positive electrode shell is fixedly connected with the negative electrode shell and matched with the negative electrode shell to form the battery shell, and the positive electrode plate is positioned in the battery shell;

the positive electrode shell is provided with a ventilation area, and a plurality of ventilation holes for air to enter the battery shell are arranged in the ventilation area;

a positive electrode groove capable of accommodating the negative electrode shell is formed in one side, far away from the negative electrode shell, of the positive electrode shell;

a protruding strip is arranged on one side of the negative electrode shell, which is far away from the positive electrode shell, and along the edge of the negative electrode shell;

at least one negative electrode groove is arranged on the protruding strip, and the negative electrode groove can form a gas limiting hole with the positive electrode shell.

Furthermore, a plurality of limiting bosses are arranged on the side wall of the positive electrode groove and used for fixing the negative electrode shell;

and a buffer area is formed among the plurality of limiting bosses and used for accommodating the deformation of the negative electrode shell.

Further, the positive electrode shell and the negative electrode shell are connected through a buckle.

Furthermore, 8-16 negative electrode grooves are formed in the protruding strip.

Further, the section of the negative electrode groove along the protruding direction of the protruding strip is semicircular.

Further, the diameter of the negative electrode groove is 3-6 mm.

Further, the ventilation area comprises a plurality of inner grooves, and the ventilation holes for air to enter the inner grooves are formed in the inner grooves;

and a communicating groove is arranged between the adjacent inner grooves, and the communicating groove and the positive plate form an exchange hole for exchanging air flow between the adjacent inner grooves.

Further, the ventilation area is provided with 100-300 inner grooves, and the diameter of the ventilation holes arranged in the inner grooves is 2-5 mm.

The invention also provides an air battery pack which comprises a plurality of air batteries.

Further, one end of the negative electrode case of the air battery is inserted into the positive electrode groove of the positive electrode case of the adjacent air battery.

When a plurality of air batteries form an air battery pack, the negative electrode shell can be inserted into the positive electrode groove of the positive electrode shell, and the negative electrode groove on the long protruding strip of the negative electrode shell and the positive electrode shell form an air limiting hole, so that the flow rate of air is reduced under the condition that the positive electrode plate and the air have enough contact area, the carbon dioxide and moisture of the air are effectively reduced, the absorption of the negative electrode reactant zinc paste into the air is effectively slowed, and the service life of the air battery is prolonged.

The invention also provides an air battery pack, which adopts the air battery, thereby having all the beneficial effects of the air battery.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an air battery according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a positive electrode case of the air battery shown in fig. 1;

fig. 3 is a schematic view of another angle of the positive casing of the air battery shown in fig. 1;

fig. 4 is a partially enlarged view a of the structural schematic diagram of the positive electrode case of the air battery shown in fig. 3;

fig. 5 is a schematic structural view of a negative electrode case of the air battery shown in fig. 1;

fig. 6 is a schematic structural diagram of an air battery pack according to an embodiment of the present invention;

fig. 7 is a schematic structural view of the connection between the negative electrode case and the positive electrode case of the air battery shown in fig. 6;

fig. 8 is a partially enlarged view B of a structural schematic diagram of connection of the negative electrode case and the positive electrode case of the air battery shown in fig. 7.

Icon: 100-a positive electrode shell; 200-a negative electrode casing; 300-a vent hole; 400-positive electrode groove; 500-limiting boss; 600-a buffer region; 700-a communication groove; 800-inner grooves; 900-raised strips; 110-negative electrode groove; 120-limiting air holes.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1 to 5, the air battery provided by the present invention includes a positive electrode case 100, a negative electrode case 200 and a positive electrode plate, wherein the positive electrode case 100 and the negative electrode case 200 are fixedly connected and matched to form the battery case, and the positive electrode plate is located in the battery case;

the positive electrode case 100 has a ventilation region in which a plurality of ventilation holes 300 for air to enter the battery case are provided;

a positive electrode groove 400 capable of accommodating the negative electrode shell 200 is arranged on one side of the positive electrode shell 100 away from the negative electrode shell 200;

a protruding strip 900 is arranged on one side of the negative electrode shell 200 far away from the positive electrode shell 100 and along the edge of the negative electrode shell 200;

at least one negative electrode groove 110 is formed on the protruding strip 900, and the negative electrode groove 110 and the positive electrode case 100 can form an air restriction hole 120.

In some embodiments, the positive electrode case 100 and the negative electrode case 200 of the air battery form a battery case having a positive electrode sheet therein, the air battery is a zinc-air battery, and the positive electrode sheet is in contact with air through the vent 300, so that the positive electrode sheet can react with oxygen in the air; in order to allow the positive electrode sheet to uniformly react with oxygen, a plurality of vent holes 300 are provided in the gas permeable region.

The convex strip 900 on the negative electrode can 200 is convex towards the side far away from the positive electrode can 100; when the negative electrode can 200 is inserted into the positive electrode can 100, the protruding strip 900 covers the air permeable area and the negative electrode groove 110 and the positive electrode can 100 form the air restriction hole 120.

The air contacting the positive plate needs to pass through the air limiting hole 120 and then pass through the air vent; thereby limiting the number of the air limiting holes 120 and reducing the air flow rate, thereby reducing the entrance of carbon dioxide and moisture and effectively delaying the reaction of the carbon dioxide and moisture red with the cathode reactant zinc paste.

The zinc-air battery only has the positive plate contacted with the air, and the negative electrode zinc paste can absorb carbon dioxide in the air through the positive plate and absorb or volatilize moisture; although zinc-air battery has handled, avoids air and calamine cream contact, but sealed degree of difficulty is high, and sealed effect is poor, and after positive plate and air contact, chemical reaction lasts, so zinc-air battery needs the area of contact and the air velocity of strict control positive plate and air in order to avoid quick inefficacy to discharge not the electricity.

The positive electrode case 100 and the negative electrode case 200 may be made of one of plastics such as nylon, polypropylene, or acrylonitrile butadiene styrene.

Referring to fig. 2, optionally, a plurality of limiting bosses 500 are disposed on a side wall of the positive electrode groove 400, and the limiting bosses 500 are used for fixing the negative electrode case 200;

and a buffer area 600 is formed between the plurality of limiting bosses 500, the buffer area 600 accommodating deformation of the negative electrode case 200.

The side wall of the positive electrode groove 400 is provided with a plurality of limiting bosses 500, and the plurality of limiting bosses 500 can firmly fix the negative electrode case 200 in the positive electrode groove 400.

Since the buffer region 600 is formed between the limiting bosses 500 to accommodate the deformation of the negative electrode case 200, the negative electrode case 200 is deformed due to the volume expansion of the negative electrode calamine cream during the reaction process; buffer areas 600 are formed between the stopper bosses 500 for accommodating deformation of the negative electrode case 200.

Alternatively, the positive electrode case 100 and the negative electrode case 200 are connected by a snap. Generally, a fastener is arranged on the positive electrode shell 100, and a fastener is arranged on the negative electrode shell 200; generally, 2-8 fasteners are arranged on the positive electrode shell 100, and a corresponding number of fasteners are arranged at corresponding positions of the negative electrode shell 200.

According to the actual requirement, optionally, 8 to 16 negative electrode grooves 110 are arranged on the convex strip 900.

Referring to fig. 5, further, the negative electrode groove 110 has a semicircular cross section along the protruding direction of the protruding strip 900.

Further, the diameter of the negative electrode groove 110 is 3-6 mm.

The negative electrode grooves 110 and the positive electrode shell 100 form air limiting holes 120, and the number of the air limiting holes 120 corresponds to that of the negative electrode grooves 110; in order to make the air enter from the air limiting holes 120 more uniformly, the negative electrode grooves 110 are generally uniformly arranged on the convex strip 900, and the corresponding number of negative electrode grooves 110 are selected according to the specification of the air battery so as to limit the flow rate of the air.

The raised strip 900 typically has a width of 2-5mm and a thickness of 2-5 mm.

And the air flow is adjusted by adjusting the number and size of the negative electrode grooves 110, so that the requirements of different discharge currents are met under the condition of reducing air interference.

The cathode grooves 110 are evenly distributed on the raised strips 900 to ensure that the deformation of the calamine cream expansion battery shell can also provide sufficient oxygen for the anode reaction at the later stage of discharge. And the air inlet design ensures the consistency and stability of air flow, and greatly avoids the problem that the whole battery pack rapidly fails due to the fact that part of batteries connected in series and parallel are interfered by air flow and fail.

The ventilation region comprises a plurality of inner grooves 800, and the ventilation holes 300 for air to enter the inner grooves 800 are arranged in the inner grooves 800;

and a communication groove 700 is arranged between the adjacent inner grooves 800, and the communication groove 700 and the positive plate form an exchange hole for air flow exchange between the adjacent inner grooves 800.

In order to make oxygen of air sufficiently contact with the positive electrode sheet, a plurality of inner grooves 800 are provided in the positive electrode case 100, and each inner groove 800 is provided with the vent hole 300;

the inner groove 800 has an enlarged opening, air enters the inner groove 800 from the vent hole 300, and the inner groove 800 increases the contact area of the air and the positive plate to ensure the normal operation of the positive reaction.

In order to make the air flow in the positive electrode case 100 smoother, the communication groove 700 is provided between the inner grooves 800; therefore, air circulation between the positive plate and the ventilation area is smoother, air flow between the inner grooves 800 is increased, oxygen content in air is more uniform, and uniform consumption of the positive plate is ensured.

Optionally, the ventilation area is provided with 100-300 inner grooves 800, and the diameter of the ventilation hole 300 arranged in the inner groove 800 is 2-5 mm.

The ventilation area is provided with 100 and 300 inner grooves 800, and the diameter of the vent hole 300 is 2-5 mm; the inner grooves 800 can increase the contact area of air and the positive plate, so that the positive plate is uniformly consumed; and the provision of the vent 300 in the inner recess 800 helps to restrict the flow of air, reducing the flow of air inside and outside the positive electrode case 100.

The negative electrode shell 200 of the air battery provided by the invention is provided with the negative electrode groove 110, when a plurality of air batteries form an air battery pack, the negative electrode shell 200 can be inserted into the positive electrode groove 400 of the positive electrode shell 100, and the negative electrode groove 110 on the convex strip 900 of the negative electrode shell 200 and the positive electrode shell 100 form the air limiting hole 120, so that the flow velocity of air is reduced under the condition of ensuring that the positive electrode plate has enough contact area with the air, the carbon dioxide and the moisture of the air are effectively reduced by absorbing a negative electrode reactant zinc paste, and the service life of the air battery is prolonged.

As shown in fig. 6 to 8, the present invention also provides an air battery pack including a plurality of air cells as described above.

Further, one end of the negative electrode case 200 of the air battery is inserted into the positive electrode groove 400 of the positive electrode case 100 of the adjacent air battery.

The air battery pack is assembled by a plurality of air batteries, and when the air battery pack is assembled, the air batteries are sequentially arranged, wherein the negative electrode case 200 of the air battery is inserted into the positive electrode groove 400 of the positive electrode case 100 of the adjacent air battery, so that the negative electrode groove 110 on the negative electrode case 200 is in contact with the positive electrode case 100 to form the air limiting hole 120.

Inner groovy 800 makes the better more abundant contact of air and positive plate to make the even consumption of positive plate, the air vent 300 that sets up in inner groovy 800 has reduced the velocity of flow of air, the further velocity of flow that has reduced the air of restriction vent 120, and then the air current restriction through both sides, both guaranteed that the air can be at anodal evenly distributed, avoided battery positive pole face contact excess air to become invalid again, greatly prolonged life, the simple uniformity of assembly process is good, stable in structure.

Compared with the existing square zinc-air battery pack on the market, the air battery pack has the advantages of longer service life, simpler assembly, more stable and reliable structure and better consistency, and is suitable for large-scale industrial production.

The invention also provides an air battery pack, which adopts the air battery, thereby having all the beneficial effects of the air battery.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.