JPH0621178Y2 - Electrolyte container for storage battery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Technical Field) The present invention relates to an electrolytic solution container for a storage battery that supplies an electrolytic solution into the storage battery.

(Prior Art and Problems Thereof) FIG. 5 is a front view of a notched main portion of a conventional electrolytic solution container for a storage battery.
The same number as the number of cells are connected to each of the body parts 17 enclosed in the electrolyte container 18 to form an electrolyte solution container 18. Above each body part 17, a liquid injection cylinder 19 is provided, and the space between the liquid injection cylinders 19 is set to a storage battery. The thin film portion 20 is formed at the front end portion of the liquid injection cylinder 19 so as to match the space between the liquid injection portions, and each body portion 17 is sealed by the thin film portion 20, and each body portion 17 is provided under each adjacent body portion 17. A communication hole 21 is provided to connect the spaces. In order to fill the electrolyte solution 16 in the storage battery electrolyte solution container 18, the main body of the electrolyte solution container 18 is made of a thermoplastic polyolefin-based resin, and the electrolyte solution 16 is provided in each body portion 17 in each cell unit. After injecting the amount, the thin film portion 20 was formed at the tip of the liquid injection cylinder 19. The thin film portion 20 is composed of a double-bonding layer sheet in which the upper layer portion is an aluminum foil and the lower layer portion is a polyethylene sheet. To seal the sheet, the polyethylene sheet side is brought into contact with the tip of the liquid injection cylinder 19 and the aluminum foil is formed. By pressing the heating plate from the side, the film is heated and pressed, and the thin film portion 20
The polyethylene sheet and the tip of the liquid injection cylinder 19 were heat-welded. However, in order to prevent the heat at the time of heating from coming into contact with or close to the electrolytic solution 16 and being taken away, the inside of the liquid injection cylinder 19 is A relatively large air pocket 22 had to be formed.

However, the storage battery electrolyte container 18 is oriented in various directions during the handling process. In particular, when rotated in the direction shown in FIG. 6, that is, in the direction shown by the arrow, and brought to the posture shown in FIG. 6, the air reservoir 22 comes to the position shown in A, When H ₂ SO ₄ is used as the electrolytic solution, the surface tension is extremely small, and at that time, the electrolytic solution 16 between the adjacent body portions 17 and the air in the air reservoir 22 are replaced through the communication hole 21, The electrolyte solution between the adjacent body parts 17 moved, which caused a large variation in the amount of the electrolyte solution 16 in each body part 17. That is, when liquid is poured into a storage battery, cells having an extremely large amount of electrolytic solution and cells having an extremely small amount of electrolytic solution are produced, which causes a problem of shortening the life of the storage battery.

(Purpose of the Invention) The present invention solves the above-mentioned drawbacks by rotating the storage battery electrolyte container in any direction during the handling process.
Regardless of the posture, there is almost no variation in the amount of electrolytic solution in each body, that is, when the battery is injected into the storage battery, the storage battery can be shortened without creating cells with extremely large or small amount of electrolytic solution. It is intended to provide an electrolyte solution container for a storage battery, which does not have a life.

(Embodiment) FIG. 1 is a cutaway front view of an essential part of an electrolytic solution container for a storage battery according to the present invention, in which 1 is an electrolytic solution container for a storage battery and is composed of a thermoplastic polyolefin resin such as polyethylene. To do. When the storage battery electrolyte solution container 1 is for storage batteries having, for example, 6 cells, the six body portions 2 (2-A, 2-B, ...
2-F) are connected by the connecting portion 3 (3-A, 3-B, ... 3-E) to be integrally formed. A liquid injection cylinder 4 is provided above each body portion 2, and an interval between the liquid injection cylinders 4 is equal to an interval between liquid injection parts (not shown) of the storage battery. Each of the body portions 2 is filled with an electrolyte solution 5 in a unit cell amount of a storage battery. Further, a thin film portion 6 composed of a double bonding layer sheet having an upper layer of aluminum foil and a lower layer of polyethylene sheet is welded to the upper end of each injection cylinder 4 by a heat welding method to tightly close the electrolytic solution container 1 for a storage battery. It is sealed to. A communication hole 7 is provided in the lower portion of the storage battery electrolyte solution container 1 to communicate between adjacent body portions 2. Its cross-sectional shape is as shown in FIG. Communication hole 7
Is provided in the lower part between the body parts in the embodiment, but extends the communication pipe downward from the lower part between the adjacent body parts,
A communication tube structure may be used in which the adjacent body parts are communicated by the communication tube.

Reference numeral 8 denotes a sealing plug fitted in each liquid injection cylinder 4, which is lighter than the specific gravity (1.3) of the electrolytic solution 5 accommodated in each body portion 2,
Made of a soft and elastic material having acid resistance, for example, a blow-molded product of soft foamed polyurethane or polyethylene having closed cells, and has a cylindrical shape that fits tightly into the inner diameter of the liquid injection cylinder 4. Form. Then, a narrow groove 9 which penetrates vertically is attached to a part of the cylindrical side wall. In the case of a polyethylene blow-molded product, burrs may be deliberately formed in the mating mold portion of the mold, and the resulting gaps may be used instead of the narrow grooves 9. Also, the narrow groove 9 is the injection cylinder 4
It may be provided on the inner wall of the. To attach this, as shown in FIG. 3 (enlarged view when the sealing plug 8 is attached), after injecting the electrolyte solution 5 of each cell unit into each body portion 2, sealing is performed from above the liquid injection cylinder 4. The stopper 8 is inserted into the liquid injection cylinder 4. The air above the electrolytic solution 5 escapes from the notch groove 9, so that the lower portion of the sealing plug 8 can be inserted into the electrolytic solution 5. Then, the insertion of the sealing plug 8 is stopped in a state where the air above the electrolytic solution in the body portion is almost eliminated, and the mounting is completed. In this state, the thin film portion 6
When heat welding is performed on the upper end of the liquid injection cylinder 4, the dimension A is set so that the height of the space 10 in the liquid injection cylinder 4 becomes substantially zero.
Is set.

The operation thereof will be described. FIG. 4 shows a state in which the storage battery electrolyte container 1 according to the present invention is used to fill (supply) a storage battery. The columnar injection protrusion 12 is formed in the center of the bottom wall and has an outer diameter designed so that it can be inserted into the injection cylinder 4. Moreover, the upper end is inclined at an acute angle,
A liquid injection hole 13 that communicates with the inside of the storage battery is provided. The exhaust hole 14 and the air displacement groove 1 communicating with the inside of the storage battery
In order to fill the storage battery with the electrolytic solution container 1 of the present invention in which 5 is formed, the electrolytic solution container 1 for the storage battery is inverted (in such a posture that the thin film part 6 faces downward), and the injection cylinder 4 part is poured. Stick into the liquid projection 12. At this time, the edge on the higher side of the upper end inclined portion of the liquid injection protrusion 12 creates a trigger to break through the thin film portion 6 of the storage battery electrolyte solution container 1, so that the thin film portion 6 is easily broken.
It is possible to easily pierce the liquid injection cylinder 4 part. By piercing, the upper end portion of the liquid injection protrusion 12 pushes up the sealing plug 8, so that the liquid is injected into the storage battery through the liquid injection hole 13. At this time, the pushed sealing plug 8 floats because it has a smaller specific gravity than the electrolytic solution 5. However, even if the specific gravity is large and the surface does not float, the liquid can be injected with a speed that is slightly slower.

(Effect of the Invention) As described above, according to the present invention, the upper space 10 of the sealing plug 8 is almost eliminated by heating and welding the thin film portion 6 to the upper end of the liquid injection cylinder 4, so that the electrolytic solution 5 in each body portion is removed. The space on the surface can be made extremely small, such as the narrow groove 9. Therefore, even if the electrolytic solution 5 moves between the adjacent body portions 2, the amount thereof is extremely small. Therefore, in the handling process of the electrolytic solution container for a storage battery, the electrolytic solution container is rotated in any direction and in any posture. Since there is almost no variation in the amount of the electrolytic solution 5 in the body portion 2, when the liquid is injected into the storage battery, neither cells having an extremely large amount of electrolytic solution nor cells having an extremely small amount of electrolytic solution are formed. That is, it prevents the storage battery from having a short life. Since the sealing plug 8 is in the fitted state, when the liquid is poured into the storage battery, the sealing plug 8 is automatically removed by the tip end of the liquid injection protrusion 12 of the liquid injection part 11 of the storage battery. Liquid can be made extremely easily.
Further, since the sealing plug 8 is interposed between the thin film portion 6 and the electrolytic solution 5, even if the thin film portion 6 is heat-welded, heat is not taken away.
Therefore, peeling due to insufficient welding of the thin film portion 6 can be prevented.

[Brief description of drawings]

Fig. 1 is a front view of a notched part of an electrolytic solution container for a storage battery according to the present invention, Fig. 2 is a sectional view taken along line II-II 'of Fig. 3, Fig. 3 is an enlarged view when the same sealing plug is attached, and Fig. 4 is the same. FIG. 5 is a cutaway front view of a main part of an electrolytic container for a storage battery showing a conventional embodiment, FIG. 5 is a front cutaway view of a main part of the storage battery, and FIG. It is explanatory drawing which shows the handling state of a liquid container. 1 ... electrolyte container for storage battery, 2 ... body,
4 ... Injection cylinder, 5 ... Electrolyte, 6 ... Thin film part, 7 ... Communication hole, 8 ... Sealing plug, 9 ... Fine groove

Claims (1)

[Scope of utility model registration request] 1. A body part (2), a liquid injection cylinder (4), a communication hole (7), a thin film part (6), a sealing plug (8) and a narrow groove (9). The body part (2) has the same number as the number of cells of the storage battery, each of which is connected, and the electrolyte solution (5) of each cell unit is enclosed inside the body part (2). ) Is integrally formed on the upper part of the body part (2), and the communication hole (7) is for connecting the adjacent body parts (2) to each other at their lower part, The thin film portion (6) covers an upper opening of the liquid injection cylinder (4), and the sealing plug (8) is fitted inside the liquid injection cylinder (4). The lower part is to be immersed in the electrolytic solution (5), and the narrow groove (9) is formed between the liquid injection cylinder (4) and the sealing plug (8). A storage battery electrolyte container.