JPH0518857Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a storage battery that prevents electrolyte from leaking and has a function that allows easy confirmation of the electrolyte level.

BACKGROUND ART AND PROBLEMS Generally, it is desired that the electrolyte inside a storage battery does not leak.

For this reason, in the past, for example, in a storage battery with a structure in which a liquid spout is attached to a liquid spout provided on the lid, various proposals have been made to complicate the internal structure of the liquid spout and improve leak-free performance. being done.

However, the complexity of the internal structure of the liquid port plug alone is insufficient.
The disadvantage was that the dimension from the back of the storage battery lid to the level of the electrolyte (hereinafter referred to as the space under the lid) was limited, making it difficult to make storage batteries more compact.

Furthermore, if the above-mentioned points are ignored and the size of the storage battery is reduced, the dimensions of the space under the lid will become smaller, and there will be a limit to how complicated the internal structure of the vent plug can be.
This has the disadvantage that sufficient leakage-free performance cannot be obtained. Also, for example, in a storage battery as shown in Figures 3 and 4, when the exhaust slit (not shown) of the vent plug faces the slit 6 provided in the well 5, electrolyte splashes are not blocked by the well 5 and easily enter the inside of the vent plug through the exhaust slit of the vent plug and leak out to the outside of the battery.

Furthermore, regarding the confirmation of the liquid level, conventionally, for example, as shown in Figs. 3 and 4, the well 5 is suspended from the 4 peripheries of the liquid opening of the lid 3 of the storage battery to the highest liquid level of the electrolyte. In most cases, the liquid level is checked using the well 5, but with the lid structure described above, the electrolyte level can only be checked at the highest liquid level, and other electrolyte levels cannot be checked. had the disadvantage of having to rely on the operator's intuition.

Means for Solving the Problems The present invention solves the above-mentioned drawbacks, has sufficient leak-free performance, and makes it easier and more accurate to check the electrolyte level. A well 5 consisting of a cylindrical protrusion hanging around the liquid injection port 4, two slits 6 dividing the well 5 into two, and a well 5.
The well 5 has two splash-proof plates 7 which are wider than the width of the slit 6 and are hung from the lid in close proximity to the outer periphery of each slit 6 so as to cover a part of the outer periphery of the well 5. It has a lower part 5a and a lower end uppermost part 5b, the lower end of the splash-proof plate 7 is uniform, and either the lower end of the splash-proof plate 7 or the lower end uppermost part 5b of the well 5 is extended to the highest liquid level, To provide a storage battery characterized in that either the lower end of the splash-proof plate 7 or the lowermost part 5a of the lower end of the well 5 is extended to the lowest liquid level.

Embodiment Hereinafter, an embodiment of the storage battery of the present invention shown in FIGS. 1 and 2 will be described.

In the figure, 1 is a battery case, 2 is a group of electrode plates arranged in the battery case, 3 is a lid that covers the top end of the battery case, and 4 is a lid that covers the top of the battery case.
Reference numeral 5 indicates a liquid injection port provided in the lid, 5 a well that hangs down from the lower peripheral edge of the liquid injection port, and 6 a slit provided in the well for releasing gas. In addition, 7 is a splash-proof plate that hangs down from the back surface of the lid so as to cover the slit at a position facing the slit 6 of the well, and the lower ends of the well 5 and the splash-proof plate 7 keep the electrolyte level. It is set to be in multiple positions as shown. That is, in this embodiment, the slit 6
The lower end 5a of the wells facing each other across the well is at the lowest liquid level, the lower end uppermost part 5b is at the intermediate liquid level, and the splash-proof plate 7
The lower end of is set at the position indicating the highest liquid level.

In the present invention, gas generated from inside the storage battery passes through the slit 6 of the well 5 and is discharged to the outside of the storage battery through the liquid spout plug attached to the liquid injection port.
In addition, electrolytic solution splashes are blocked by the well 5 or the splash-proof plate 6 no matter which direction the exhaust slit of the liquid outlet plug is located, so that they do not enter the inside of the liquid outlet plug and do not leak out to the outside of the storage battery.

Due to the electrolyte splash-blocking effect of the well 5 and the splash-proof plate 7 described above, the restriction on the space under the lid is reduced, making it possible to downsize the storage battery while sufficiently maintaining leak-free performance.

In addition, the well and splash-proof plate are suspended from around the liquid opening of the lid to either the highest electrolyte level, intermediate level, or lowest level, respectively.
The electrolyte level can be easily and accurately checked from the liquid opening.

Effects of the invention As described above, the storage battery of the invention has sufficient leak-free performance with a simple structure consisting of wells with different heights from around the liquid opening of the lid and a splash-proof plate hanging down. It has many advantages, such as making it easier and more accurate to check the liquid level and making it possible to downsize the storage battery.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the storage battery of the present invention, Fig. 2 is a back view of the lid of the storage battery shown in Fig. 1,
Figure 3 is a sectional view showing an example of a conventional storage battery;
The figure is a back view of the lid of the storage battery shown in FIG. 3. 3... Lid, 4... Inlet, 5... Well, 6...
...Slit, 7...splash-proof board.

Claims (1)

[Claims for Utility Model Registration] A well 5 consisting of a cylindrical protrusion hanging around the liquid injection port 4 of the lid, two slits 6 dividing the well 5 into two, and a part of the outer periphery of the well 5 There are two splash-proof plates 7 which are wider than the width of the slits 6 and are hung from the lid in close proximity to the outer periphery of each slit 6 so as to cover the wells. The lower end of the splash-proof plate 7 is uniform, and either the lower end of the splash-proof plate 7 or the uppermost part 5b of the lower end of the well 5 is extended to the highest liquid level. A storage battery characterized in that either the lower end or the lowest lower end 5a of the well 5 is extended to the lowest liquid level.