JPH06267530A - Sealed lead-acid battery - Google Patents

Abstract

PURPOSE:To reduce the volume of a battery without converting the volume of an electrode plate group so as to realize a small size, by providing a liquid pouring body which has a liquid leading hole having a chute piece whose upper end is inclined and the lower end is bent horizontally, and an exhaust groove, at the center of a liquid pouring hole provided to a lid. CONSTITUTION:A liquid pouring body 20 is provided at the center of the bottom 19 held by plural holders 18 extending in L-shape from the peripheral edge lower part 17 of a liquid pouring hole 12 opened to a lid 11 to the inner side. The upper end 21 of the liquid pouring body 20 is inclined, so as to allow to pour the liquid by breaking the membrane at the tip of the pouring part of an electrolyte container. A gas exhaust groove 22 is opened from the upper end 21 to the bottom 19, and makes the air enter to the electrolyte container easily in the liquid pouring time. A bending form of chute piece 25 is provided from the lower end of the lower liquid pouring tube 24 of the liquid leading hole 23 opened in the battery to the lower side further. By making the liquid pouring body 20 flexible, the size A is reduced as small as possible, while absorbing the unevenness of the height size in the assembly, so as to facilitate to make the battery in a small size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid injection part of a sealed lead acid battery.

[0002]

2. Description of the Related Art There is a type of lead acid battery for motorcycles in which an electrode plate is activated by injecting an electrolytic solution from a liquid injection port when the battery is used. Conventionally, the liquid injection part of this type of storage battery has a liquid injection port 2 opened on the upper surface of a storage battery lid 1 as shown in FIG.
An L-shaped support body 3 is formed inside, and the injection liquid 4 is supported by the support body 3 and arranged at the center of the injection port 2. An upper end of the liquid injection 4 is formed into a lot as shown by 5, and the exhaust groove 6 and the electrolytic solution conducting hole 7 are formed.
And the liquid injection cylinder 8 was extended downward. When injecting the electrolytic solution, the electrolytic solution container 9 was pierced with the injection liquid 4 as shown by the alternate long and short dash line in FIG.

As shown by the arrow in FIG. 5, the electrolyte solution is injected into the storage battery by flowing the electrolyte solution through the electrolyte passage hole 7 and sucking air through the exhaust groove 6 to cause electrolysis in the electrolyte solution container 9. This is done by replacing the liquid with air. At this time, in order for the electrolytic solution to flow in satisfactorily, the head pressure caused by the height dimension A must be a certain value or more. By the way, in order to obtain a certain value of head pressure, the height dimension A is 18 m.
It was set to m.

[0004]

In recent motorcycles (family motorcycles), the capacity of accommodating a storage battery is extremely limited due to the inclusion of a helmet in the vehicle body, and the volume of the battery is about 70 to 80% of the conventional volume. However, the demand for stationary performance has increased. In order to cope with this, it is necessary to set the volume occupied by the electrode plate group in the storage battery to the maximum and to make the space above the electrode plate group as small as possible. However, the above-described height dimension A has a fatal restriction, and there is a problem that the storage battery cannot be designed compactly.

The present invention has been made in view of the above problems, and an object of the present invention is to make the above-described height dimension A significantly small and to meet the above requirements. Is to provide.

[0006]

In order to achieve the above object, the present invention is a lead-acid battery having a liquid injection port 12 which is opened on the upper surface of a lid 11 and communicates with the inside of the battery.
The reference numeral 2 has an upwardly projecting injection liquid 20 supported by a support 18 in the center of the inside thereof, and an injection cylinder 24 extending below the injection liquid 20. The injection liquid 20 has an upper end inclined. The liquid injection hole 23 communicates with the inside of the battery and the exhaust groove 22 on the outer wall, and the liquid injection cylinder 24 has a horizontally curved gutter piece 25 at its lower end. is there.

[0007]

The gutter piece 25 formed on the liquid injection cylinder 24 is
It works by eliminating the surface tension generated at the lower end and facilitating the flow of electrolyte into the battery.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an external perspective view showing the relationship between a liquid injection port and an electrolytic solution container of the sealed lead-acid battery of the present invention, FIG. FIG. 4 is a perspective view of the liquid to be injected into the mouth, and FIG. 4 is a vertical cross-sectional view of the relevant part showing another embodiment.

In FIG. 1, reference numeral 10 is a sealed lead-acid battery, and liquid injection ports 12a to 12f are opened on the upper surface of a lid 11. 1
Reference numeral 3 denotes an electrolytic solution container, which has a container portion 14 that stores the amount of electrolytic solution for one cell of the battery and a liquid injection portion 15.
Are connected by the number of the liquid injection ports by the connecting plate portion 16, a thin film (not shown) is formed at the tip of the liquid injection portion 15, and the thin film is inserted into the liquid injection ports 12a to 12f from the direction of the arrow. It is a thing.

In FIG. 2 and FIG. 3, a plurality of supports 18 are extended in an L shape from the lower peripheral portion 17 of the liquid injection port 12 inside the liquid injection port 12 opened on the upper surface of the lid 11. The bottom portion 19 of the liquid injection port 12 is formed. Then, the injection liquid 20 supported by the support 18 is the injection liquid 1
It is located in the center of 2. The top of the injection liquid 20 is 21
As shown in (2), it is inclined in a lotus shape, and the thin film at the tip of the liquid injection portion 15 of the electrolytic solution container 13 is pierced into the pointed portion to open and inject.

Reference numeral 22 denotes an exhaust groove which extends from the upper end of the slope 21 to the bottom portion 19 and is opened at the bottom portion 19.
In addition, the lower part has a partial bulging part 22a that spreads the liquid injection part of the electrolytic solution container and makes it easier for air to enter. Reference numeral 23 is a liquid conducting hole whose lower end opens inside the storage battery. Reference numeral 24 denotes a liquid injection cylinder that extends downward, and a curved trough piece 25 that extends further downward from the lower end of the liquid injection cylinder 24 is provided. In FIG. 4, when the gutter piece 25 is made to have flexibility and is brought into contact with the separator 26 or the like,
Since the gutter piece 25 can be bent freely, variations in height when assembling the battery can be absorbed, and the lower end of the liquid injection cylinder can be set at a lower position, which is more advantageous in terms of assembly and function.

Next, using the dimension A shown in FIGS. 2 and 5 as a parameter, a comparative test was conducted on whether or not the product of the present invention and the conventional product, which were changed in steps of 2 mm, could be injected. The results are shown in Table 1. In addition, the test battery was prepared by using 5 sealed 12V / 8Ah (10HR) sealed lead acid batteries each, and 6 electrolytic solution containers were integrated, and the batteries were sequentially filled with the electrolytic solution containers. If, even at one of the six places, the liquid injection was incomplete (the liquid could not be injected automatically), it was marked as x.

[0013]

[Table 1]

From Table 1, the product of the present invention is 10 m longer than the conventional product.
It was found that the liquid can be injected with the same accuracy as the conventional product even if the length is shortened. This means that in the conventional product having the external dimensions of length 150 mm, height 105 mm, width 87 mm, and volume 1370 cm ³ , the external dimensions of the present invention are 150 mm, height 105 mm, width 65.5 mm, and volume 1032 cm ^3. It can be replaced, which corresponds to a volume reduction of about 75%.

[0015]

Since the present invention is configured as described above, it has the following effects. (1) Even if the dimension A in FIG. 2 (of the present invention) is shortened by 10 mm from that of the conventional product, liquid injection can be performed with the same accuracy as that of the conventional product, so that the polarization plate can be made higher. . That is, the volume occupied by the electrode plate group in the storage battery can be set to the maximum, and the space on the electrode plate group can be made as small as possible. (2) Since the gutter piece can be molded integrally with the lid and curved immediately after the molding while the product temperature is high, the bending process can be easily performed, so that the product can be obtained at the same price as the conventional product. (3) The conventional electrolytic solution container can be applied as it is. That is, it is possible to omit the cost of a mold for newly building the electrolytic solution container, the cost required for switching such as inventory disposal adjustment, and the complicated labor.

[Brief description of drawings]

FIG. 1 is an external perspective view immediately before inserting an electrolytic solution container into a liquid injection port of a sealed lead acid battery of the present invention.

FIG. 2 is a vertical cross-sectional view of a main part of a liquid injection port of the sealed lead acid battery of the present invention.

FIG. 3 is a perspective view of the liquid injection at the liquid injection port of the sealed lead acid battery of the present invention.

FIG. 4 is a vertical cross-sectional view of the main part showing another embodiment of the sealed lead-acid battery of the present invention.

FIG. 5 is a longitudinal sectional view of a main part showing a liquid injection part of a conventional sealed lead-acid battery.

[Explanation of symbols]

 11 Lid 12 Injection Port 18 Support 20 Injection Liquid 22 Exhaust Groove 23 Liquid Conduction Hole 24 Injection Cylinder 25 Gutter

Claims (2)

[Claims] 1. A liquid injection port (1) communicating with the inside of the lid (11).
A sealed lead-acid battery having 2), wherein the liquid injection port (12) has an upwardly projecting liquid injection (20) supported by a support (18) in the inner center, and the liquid injection (20). And a liquid injection cylinder (24) extended downwardly of the liquid injection hole (24), the liquid injection hole (23) having a liquid discharge hole (23) having an upper end inclined and communicating with the inside of the battery, and an exhaust groove ( 22) and the liquid injection cylinder (24) has a horizontally curved gutter piece (25) at a lower end thereof. 2. The sealed lead acid battery according to claim 1, wherein the gutter piece (25) is flexible and abuts on the separator (26).