JP5757341B2 - Injection air battery and injection air battery module - Google Patents

Description

The present invention relates to a liquid injection type air cell and pouring type air cell module and a storage tank for storing the electrolytic solution that will be supplied to the air cell power generation unit and the air-cell power generation part.

As an air battery related to this type of liquid injection type air battery, there are those disclosed in Patent Document 1 and, although technical fields are different, Patent Document 2 discloses the name of the liquid injection type battery.
The air battery disclosed in Patent Document 1 is a battery that collects a plurality of single cells, an electrolytic solution storage container that stores an electrolytic solution, and a battery that generates electricity by storing the electrolytic solution and immersing the assembled battery in the electrolytic solution. The battery tank is used together with a lid member for holding the assembled battery and serves as a case for housing the assembled battery, and receives the electrolytic solution storage container when water is poured into the electrolytic solution. A receiving part is provided.

  Moreover, the liquid injection type battery disclosed in Patent Document 2 includes a pair of columnar ampules (corresponding to a storage tank) containing an electrolyte and a power generation unit surrounding the ampules in a bottomed cylindrical outer case. The ampoule is arranged such that the side surface of the ampoule faces the inner bottom of the outer case.

JP 2002-151167 A JP 2007-027045 A

However, a large battery such as the air battery disclosed in Patent Document 1 described above has an electrolytic solution storage container disposed at the end of the unit cell, and therefore has a current collection distance and a flow path length of the electrolytic solution. Longer discharge currents are reduced due to current collection loss and gas pressure loss.
In addition, when injecting the liquid, there are unsolved problems such that it takes time to infiltrate the electrolyte into the far end portion of the unit cell, and discharge is uneven due to uneven permeation.

  Accordingly, the present invention provides a liquid-injected air battery and a liquid-injected air battery that can shorten the flow path length and current collection distance of the electrolytic solution, and can easily perform diffusion and permeation of the electrolytic solution during injection in a short time. The purpose is to provide modules.

Pouring type air cell according to the present invention for solving the above problems, the reservoir and the air-cell power generation part, which is formed by the electrolytic solution is injected, the electrolyte solution that will be fed to the air-cell power generation part Oite the pouring type air batteries having a storage tank, a to said storage tank being disposed inwardly of the air-cell power generation part, the electrolyte solution on the outer edge of the air-cell power generation part It is characterized by having a plurality of liquid feeding holes for feeding the liquid .

In this configuration, a storage tank having a plurality of liquid feeding holes for feeding the electrolyte solution to the outer edge portion of the air cell power generation unit is disposed inside the air cell power generation unit. The flow path length and the current collection distance are reduced, and the electrolyte can be easily diffused and permeated during injection in a short time.
The liquid injection type air battery module according to the present invention for solving the above-mentioned problems is one in which a storage tank is provided for each air battery power generation unit .

  ADVANTAGE OF THE INVENTION According to this invention, the flow path length and current collection distance of electrolyte solution can be shortened, and the spreading | diffusion and osmosis | permeation of electrolyte solution at the time of liquid injection can be performed easily in a short time.

(A) is sectional drawing which shows schematic structure of the injection type air cell which concerns on 1st embodiment of this invention, (B) is the bottom view. (A) is sectional drawing which shows schematic structure of the injection type air battery which concerns on 2nd embodiment of this invention, (B) is the bottom view. It is a perspective view which shows schematic structure of a storage tank. The injection type | formula air cell which concerns on 3rd embodiment is shown, (A) is the fragmentary sectional view, (B) is a perspective view which shows the structure of a storage tank. The injection type | formula air cell which concerns on 4th embodiment is shown, (A) is the fragmentary sectional view, (B) is a perspective view which shows the structure of a storage tank. The injection type | formula air cell which concerns on 4th embodiment is shown, (A) is the fragmentary sectional view, (B) is a perspective view which shows the structure of a storage tank. The modification of a spacer is shown, (A) is a fragmentary sectional view of an air battery power generation part , (B) is the bottom view. (A)-(C) are top views which show the other example of the outline shape of an air battery power generation part .

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated with reference to drawings. FIG. 1 (A) is a cross-sectional view showing a schematic configuration of the injection type air battery according to the first embodiment of the present invention, and FIG. 1 (B) is a bottom view thereof.

The main configuration of the injection type air battery A1 according to the first embodiment of the present invention is that a plurality of air battery power generation units 10 and a single storage tank 30 are disposed inside the air cell power generation units 10. In the point. In other words, the storage tank 30 is disposed at a position where the average flow path length of the electrolytic solution W described later becomes shorter.

In the present embodiment, four air battery power generation units 10 formed in a circular shape in plan view having the same shape and the same size are stacked so as to hold the required gap S and be coaxial with each other about the axis O. In addition, the storage tank 30 is disposed so as to coincide with the axis O.

Each air battery power generation unit 10 described above has a function of generating electric power when the electrolyte W in the storage tank 30 is injected, and a tank fitting hole 11 is formed at the center thereof.
In the air battery power generation unit 10, a positive electrode 13 and a negative electrode 14 are disposed on both surfaces (upper and lower surfaces in the drawing) of a separator 12, and a liquid-tight gas permeable film (hereinafter referred to as “water repellent film”) is formed on the outer surface of the positive electrode 13. 15 are stacked and accommodated in a case 16 having the following configuration.

Case 16, which has substantially the peripheral wall 18 which is substantially the same height as the air-cell power generation part 10 around the same as the outer diameter of the circular shape in plan view of the bottom wall 17 surrounds formed with the air-cell power generation part 10, which A tank fitting hole 19 is formed at the center.
A spacer 20 that is slightly smaller than the outer diameter of the case 16 is disposed on the lower surface 17 a of the bottom wall 17 of the case 16.

The storage tank 30 is for storing the electrolyte W to be supplied to each air battery power generation unit 10 and has a height dimension H1 that is slightly higher than the stacked height dimension of the four air battery power generation units 10. It is a cylindrical hollow body.

That is, in this embodiment, the single storage tank 30 is arrange | positioned in the four air battery power generation parts 10. FIG.
In the storage tank 30, liquid feed holes (not shown) for feeding the electrolytic solution W are formed at predetermined angular intervals at positions facing the inner end face of the negative electrode 14 of each air battery power generation unit 10. .

In the liquid injection type air battery A1 configured as described above, the electrolyte solution W is supplied from the liquid supply hole (not shown) of the storage tank 30 to the air battery power generation unit 10, thereby functioning as an air battery. Start power generation.

In addition, since the storage tank 30 is disposed inside the air battery power generation unit 10, in other words, the storage tank 30 is disposed at a position where the average flow path length of the electrolytic solution W is shortened. The distance to the outer edge part 10a of the electric power generation part 10 can be made small, and the electrolyte solution W can be osmose | permeated to the outer edge part 10a earlier, and the time to discharge can be shortened.

In particular, since the air battery power generation unit 10 is circular in plan view, the distance from the liquid supply hole (not shown) to the outer edge 10a of the air battery power generation unit 10 is constant. In other words, the flow path length L1 of the electrolytic solution from the axis O to the outer edge portion 10a of the air battery power generation unit 10 is made constant.

Therefore, the penetration unevenness of the electrolytic solution can be reduced as compared with the case of using a square shape and the power generation performance can be made uniform. Thereby, deterioration due to discharge unevenness and discharge unevenness can be suppressed.
In the present embodiment, air is supplied from the outer edge of the air battery power generation unit 10, but the present invention is not limited to this.

  FIG. 2 is a cross-sectional view showing a schematic configuration of an injection type air battery according to a second embodiment of the present invention, (B) is a bottom view thereof, and FIG. 3 is a perspective view showing a schematic structure of a storage tank. is there. In addition, about the thing equivalent to what was demonstrated in embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

Pouring type air battery A2 according to a second embodiment of the present invention includes an air-cell power generation part 10, configured the same as described above in terms of arranging the storage tank 40 to the inside of the air cell power generation unit 10 The four air battery power generation units 10 are stacked so as to maintain a predetermined interval and are coaxial with each other, and a storage tank 40 is disposed so as to coincide with the axis O.

The storage tank 40 has a cylindrical shape with a height H1 that is slightly higher than the stack height of the four air battery power generation units 10, stores the electrolyte W therein, and stores air at the center. An air flow path 41 for circulation is formed.

That is, liquid feed holes (not shown) for feeding the electrolytic solution W are formed at predetermined angular intervals at positions facing the inner end face of the negative electrode 14 of each air battery power generation unit 10 and are adjacent to each other in the vertical direction. A plurality of air supply holes 42 are formed at required angular intervals at positions facing the gap S between the two air battery power generation units 10, 10 that match.

A plurality of guide members 21 are arranged on the lower surface 17a of the bottom wall 17 of the case 16 in a radial manner with the tank fitting hole 19 and thus the axis O as the center. The induction member 21 guides the air supplied through the air flow path 41 to the outer edge portion 10 a of the air battery power generation unit 10.

The negative electrode 14 and the positive electrode 13 of the two air battery power generation units 10 and 10 adjacent to each other are connected to the outer peripheral wall surface of the storage tank 10, in other words, the tank fitting holes 19 of the case 16 and the air cell power generation unit 10. A current collector 22 is provided for connecting the two air cell power generation units 10 and 10 adjacent to each other in series.
In this way, by arranging the air supply holes, the liquid supply holes, and the current collector 22 in the storage tank 10 in a concentrated manner, the liquid injection type air battery can be made compact and manufactured at a low cost. be able to.

FIGS. 4A and 4B show a liquid injection type air battery according to the third embodiment, in which FIG. 4A is a partial sectional view and FIG. 4B is a perspective view showing a structure of a storage tank. 4 to 6 show only two air battery power generation units .

The liquid injection type air battery A3 according to the third embodiment is different in the configuration of the storage tank 50.
Storage tank 50 is a hollow body in which the cylindrical for storing the feed Kyusuru electrolytic solution W to the air cell power generation unit 10, a slightly higher elevation than the height stack of a plurality of air cell power generation unit 10, 10 It is formed in the dimension H2.
In FIG. 4, two air battery power generation units 10, 10 are illustrated.

In the peripheral wall 51 of the storage tank 50, a plurality of liquid supply holes 52 for supplying the electrolytic solution W are predetermined for each height position facing the inner end face of the cathode 14 of each air battery power generation unit 10, 10. It protrudes at an angular interval of.
A plurality of air supply holes 57 for supplying air are formed at predetermined angular intervals for each height position facing the gap S between the air battery power generation units 10 and 10.

In the peripheral wall 51, the “+” and “−” conductive films (conductive patterns) 53, 54 parallel to the axis O and a plurality of liquid supply holes 52 at respective height positions are electrically connected in common. A conductive film 56 that conducts in common through the film 55 and the plurality of air supply holes 57 at each height is printed and formed, thereby connecting the air battery power generation units 10 in parallel.

  FIGS. 5A and 5B show a liquid injection type air battery according to the fourth embodiment, in which FIG. 5A is a partial sectional view and FIG. 5B is a perspective view showing a structure of a storage tank. In addition, about the thing equivalent to what was demonstrated in the said FIG. 4, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

The liquid injection type air battery A4 according to the fourth embodiment is different in the configuration of the storage tank 60.
The storage tank 60 shown in FIGS. 5 (A) and 5 (B) is a cylindrical tank for storing the electrolytic solution W to be supplied to the air battery power generation unit 10, and is used for circulating air in the center of the storage tank 60. An air flow path 61 is formed, and is formed to have a height dimension H2 that is slightly higher than the stacked height dimension of the plurality of air battery power generation units 10 and 10.
FIG. 5 illustrates two air battery power generation units 10 and 10.

The peripheral wall 61 of the storage tank 60 has a plurality of liquid supply holes 62 for supplying the electrolytic solution W for each height position facing the inner end face of the cathode 14 of each air battery power generation unit 10, 10. It protrudes at an angular interval of.
A plurality of air supply holes 63 for supplying air are formed at predetermined angular intervals for each height position facing the gap S between the air battery power generation units 10 and 10.

In the above-mentioned peripheral wall 61, “+” and “−” conductive films (conductive patterns) 64 and 65 parallel to the axis O and a plurality of liquid feed holes 62 at respective height positions are electrically connected in common. The film 66 and a conductive film 67 that conducts in common through the plurality of air supply holes 63 at each height are printed and formed, thereby connecting the air battery power generation units 10 in parallel.

  6A and 6B show a liquid injection type air battery according to the fifth embodiment. FIG. 6A is a partial sectional view thereof, and FIG. 6B is a perspective view showing a structure of a storage tank. In addition, about the thing equivalent to what was demonstrated in embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

A liquid injection type air battery A5 according to the fifth embodiment is obtained by stacking air battery modules 80 and 80 in which storage tanks 70A and 70B are provided for the air battery power generation units 10 and 10, respectively. Since the storage tanks 70A and 70B have the same configuration, the storage tank 70A will be described below, and the description of the storage tank 70B will be omitted.

The storage tank 70 </ b> A has a cylindrical shape with a height slightly higher than the height of the air battery power generation unit 10. The storage tank 70 </ b> A stores the electrolyte W therein and distributes air to the center thereof. An air flow path 71 is formed.

In addition, a plurality of air supply grooves 73 for supplying air are recessed in the upper wall 72 radially at a predetermined angular interval.
When the storage tanks 70A and 70B are connected to each other, the air supply groove 73 is partitioned by the lower wall of the storage tank 70B adjacent to the upper side of the storage tank 70A and becomes the air supply hole 73.
Note that the upper wall 72, and hence the air supply hole 73, faces the gap S between the air battery power generation units 10 and 10 when the storage tank 70A and the storage tank 70B are connected.

On the peripheral wall 71 of the storage tank 70A, a plurality of liquid supply holes 75 for supplying the electrolytic solution W project at a predetermined angular interval at a height position facing the inner end face of the cathode 14 of the air battery power generation unit 10. It is installed.

In addition, a ring-shaped conductive film 74 having a width to be electrically connected to the positive electrode 14 of the other air battery power generation unit 10 and its own negative electrode 13 is formed at the same height position as the plurality of air supply holes 73. A ring-shaped conductive film 76 having a width to be electrically connected to the negative electrode 14 of the other air battery power generation unit 10 and its own positive electrode 13 is formed at the same height position as the plurality of liquid feeding holes 75.

The liquid injection type air electrostatic Ikemo Joule 80,80 How to the storage tank 70A, and by connecting 70B, is connected to what the conductive film 74, and if the pouring type air electrostatic Ikemo Joule 80,80 Are connected in series.
The positioning of and what pouring type air electrostatic Ikemo joules 80 and 80 are previously formed a positioning portion such as a positioning pin and recess on the abutting wall of one another, carried out by bringing them fitted.

FIG. 7 shows a modified example of the spacer, (A) is a partial cross-sectional view of the air battery power generation unit , and (B) is a bottom view thereof. In addition, about the thing equivalent to what was demonstrated in embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

The spacer 90 shown in the figure is a plurality of ribs that are integrated with the lower surface 17 a of the bottom wall 17 of the case 16 and project at a predetermined interval so that air can flow between the ribs 90. I have to.
8A to 8C are plan views illustrating other examples of the contour shape of the air battery power generation unit .
The air battery power generation unit 10A shown in FIG. 10A is an octagon in plan view, the air battery power generation unit 10B shown in FIG. 10B is a hexagon in plan view, and the air battery power generation unit 10C shown in FIG. It is a square in plan view.
That is, the shape is not limited to the circular shape in plan view, and can be a known polygonal shape, an elliptical shape, or the like.

The present invention is not limited to the above-described embodiments, and the following modifications can be made.
-In embodiment mentioned above, although the thing of the structure which laminated | stacked four air battery power generation parts was illustrated, it is not restricted to the number of sheets, Of course, it can increase / decrease suitably.

Although described in detail above, in any case, each configuration described in each of the above embodiments is not limited to being applied only to each of the above embodiments, and the configuration described in one embodiment is not limited to other embodiments. It can be applied mutatis mutandis or applied to the form, and can be arbitrarily combined.

10, 10A-10C Air battery power generation unit 30 Storage tank 41 Air flow path 57 Air supply hole 80 Injection type air battery module W Electrolyte

Claims (7)

And air cell power generation part, which is formed by the electrolytic solution is injected, the reservoir tank for storing the electrolytic solution that will be fed to the air-cell power generation part, the liquid injection type air battery having,
The storage tank is disposed inside the air battery power generation unit ;
The liquid injection type air battery , wherein the storage tank has a plurality of liquid feeding holes for feeding an electrolytic solution to an outer edge part of the air battery power generation part . The injection type air battery according to claim 1, wherein the storage tank is disposed at an axis of the air battery power generation unit . Pouring type air cell according to claim 1, said storage tank, characterized in that it is arranged in the air-cell power generation part of the axis that is in plan view a circle. It said storage tank, for circulating air with the air flow path, the air of any one of claims 1 to 3, characterized in that it comprises a supply hole for feeding in the air-cell power generation part The liquid-injection type air battery according to item. Has a plurality of said air-cell power generation part,
The air-cell power generation part, liquid injection type air cell according to any one of claims 1 to 4, characterized in that are coaxially stacked on one another. It said storage tank, pouring type air cell according to 請 Motomeko 5, characterized in that it comprises a current collector electrically connecting the air-cell power generation part. An air-cell power generation part according to any one of claims 1 to 6,
A storage tank for storing the electrolytic solution disposed for each of the air battery power generation units and supplied to the air battery power generation unit;
The storage tank is disposed inside the air battery power generation unit;
The storage tank has a plurality of liquid feeding holes for feeding electrolyte to the outer edge of the air battery power generation unit.
A liquid injection type air battery module.

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