JPS5924134Y2 - storage battery - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a storage battery equipped with a so-called simultaneous injection device that simultaneously injects electrolyte or purified water up to a specified liquid level in the storage battery.

Conventionally, as a method for simultaneously injecting liquid into storage batteries, for example,
No. 4-13888 has been proposed.

The principle of this liquid injection method will be explained in detail below with reference to FIG.

In Fig. 2, 1 is a battery container, 2 is a battery container lid, a rising wall 3 is provided on the upper surface to form a liquid injection part 4, and a liquid level regulating tube 5 is provided on the lower surface with the upper end attached airtightly. A liquid inlet 8 having an upper protruding wall 6 and a lower protruding wall 7 that can penetrate through the container lid 2 is provided. is covered with a cover 9 having a gap at the bottom so that the liquid in the liquid injection part 4 can freely flow in.

10 is an exhaust hole provided in the battery case lid 2 (or the battery case 1) outside the area of the liquid level regulating tube 5, and 11 is an electrolyte in the storage battery.

In this storage battery, when injecting electrolyte, for example, when the liquid level injected into the liquid injection part 4 reaches the upper end of the upper protruding wall 6 of the liquid injection port 8 or higher, the upper protruding wall 6 and the lower Projecting wall 7
The liquid flows inside and flows down into the lid battery.

When the liquid level of the electrolytic solution 11 in the storage battery reaches the lower end of the liquid level regulating tube 5, the air pressure in the liquid level regulating tube 5 rises above normal pressure and suppresses the liquid level in the cover 9, causing the liquid level in the lid battery to rise. When the liquid level of the electrolytic solution 11 in the liquid level regulating tube 5 reaches the lower end height hl of the liquid level regulating tube 5, the liquid level of the electrolytic solution 11 in the liquid level regulating tube 5 also reaches the lower end height h1' of the liquid level regulating tube 5. The liquid in the liquid injection part 4 finally stops flowing down from the liquid injection port 8 when the liquid level reaches the position and is balanced with the increase in air pressure in the liquid level regulating tube 5.

In this case, as shown in FIG. 2A, the difference h4 between the liquid level in the liquid injection part 4 and the upper end of the upper protruding wall 6 of the liquid injection port 8 is the same as the liquid level of the electrolyte 11 in the storage battery and the liquid level regulation. The height is equal to the height obtained by subtracting the difference h'1 between the liquid level of the electrolytic solution 11 in the liquid level regulating tube 5 and the lower end of the liquid level regulating tube 5 from the difference h1 between the lower end of the tube 5 and the lower end of the liquid level regulating tube 5.

In other words, the relational expression h4=h, -h' holds true.

However, in the above method, when a large amount of liquid is injected into the liquid injection part 4 at once, the amount of liquid flowing down from the liquid injection port 8 into the storage battery becomes extremely large, and the flowing state becomes a string-like flow due to the surface tension of the liquid. 12 (hereinafter referred to as string-like flow when the liquid flow is continuous like a string).

When the liquid continues to be injected into the storage battery in a loose state, and the level of the electrolytic solution 11 in the storage battery rises and reaches a position hl from the lower end of the liquid level regulation tube 5, the liquid level regulation tube Electrolyte 1 in 5
1 is connected to the liquid in the liquid injection part 4 by a string-like flow 12, so that the liquid level of the electrolyte 11 in the liquid level regulating tube 5 is applied with a liquid pressure corresponding to the height of h2. , the liquid level of the electrolytic solution 11 in the storage battery is not balanced with the atmospheric pressure in the liquid level regulating tube 5, and the liquid continues to flow down into the storage battery.

The reason for this is further clarified with reference to FIG. 2B. In FIG. 2B, the string-like flow down tube 12 in FIG. (The lower end is located at the same height as each of the liquid level regulating tubes 5)
Therefore, even after the liquid level in the liquid level regulating tube 5 reaches a position h1' from the lower end of the liquid level regulating tube 5 due to liquid injection, the liquid level in the liquid level regulating tube 5 still remains. A hydraulic pressure corresponding to the height h2 will be applied.

When the liquid level of the electrolytic solution 11 in the storage battery rises and reaches a position h3 from the lower end of the liquid level regulating tube 5, the liquid level of the electrolytic solution 11 in the liquid level regulating tube 5 also rises to a position h3 from the lower end of the liquid level regulating tube 5. reaches the position h3' from the lower end of
When the relational expression -h'3=h'2 is satisfied, the liquid stops flowing into the storage battery.

At this time, the liquid level in the liquid injection part 4 and the upper protruding wall 6 of the liquid injection port 8
The height difference h4 from the upper end of is unchanged.

In order to avoid such a situation, Japanese Utility Model Publication No. 52-29225 has been proposed.

The content is that multiple concave and convex parts are provided on the lower surface of the protruding wall below the liquid injection port, so that the flow of liquid into the storage battery is not in the form of strings, but in the form of droplets (the flow of liquid is not continuous, but in fragments). those in a state of
(hereinafter referred to as droplet-like flow).

However, in a storage battery with this structure, when the inflow of liquid into the storage battery becomes a string-like flow, one of the multiple protrusions on the lower surface of the lower protruding wall of the inlet is located almost directly below the string-like flow. Since the electrolyte is dispersed only on the convex portions of the battery, when the amount of dispersed unit flow is large, there is a risk that the electrolyte level in the storage battery may not stop at the specified level because the droplet-like flow does not occur.

The present invention is intended to eliminate the above-mentioned drawbacks, and is intended to provide a storage battery with a simultaneous liquid injection device equipped with a liquid injection port having upper and lower protruding walls attached to a liquid level regulating tube and a shield, with an opening at the lower end of the liquid injection port. The storage battery is equipped with a bottom plate having a plurality of protrusions on the electrolyte surface side of the lid battery and small holes provided in the protrusions.

This will be explained with reference to the drawings (identical parts of the conventional storage battery shown in FIG. 2 are designated by the same reference numerals).

Reference numeral 13 denotes a bottom plate attached to the lower end opening of the liquid inlet 8 (it may be attached integrally with the liquid inlet 8);
has several protrusions 14 on the side of the electrolyte in the storage battery, and small holes 15 for flowing the liquid into the protrusions 14 into the storage battery.
has been established.

Since the present invention has the above-described structure, even if a large amount of liquid is injected into the liquid injection part 4 at once when injecting liquid into the storage battery, the liquid will flow into the liquid injection port 8 and into the inner wall of the liquid injection port 8. I entered through the message, but
Since the lower end opening of the liquid inlet 8 is closed by the bottom plate 13, the liquid stays on the upper surface of the bottom plate 13 inside the liquid inlet 8, where it is dispersed into the plurality of small holes 15 and flows down. In order to flow down into the storage battery from the protrusion 14 formed at the lower end of the hole 15,
As a result, the unit flow rate of the dispersion liquid is always small, resulting in a droplet-like flow as shown in Figure 1, and therefore not a string-like flow, so that the electrolyte in the storage battery is always injected at a constant liquid level. Ru.

The present invention has great practical value as it has the effects as explained above.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the main parts of the storage battery of the present invention, and A in Figure 2.
and B is a principle diagram of a conventional storage battery, and FIG. 3 is a bottom view of the bottom plate attached to the lower end opening of the liquid inlet of the storage battery of the present invention. 1 is a battery container, 2 is a container lid, 4 is a liquid injection part, 5 is a liquid level regulating tube,
6 is an upper protruding wall, 7 is a lower protruding wall, 8 is a liquid inlet, 9 is a cover, 1
0 is an exhaust hole, 13 is a bottom plate, 14 is a protrusion, and 15 is a small hole.

Claims (1)

[Scope of utility model registration request] A container lid with a liquid injection part on the top surface and a liquid level regulating tube on the bottom surface, an upper protruding wall with a shield attached to the liquid injection part side, and a lower protruding wall inside the liquid level regulating pipe. In a storage battery with a liquid injection device, which has a port and an exhaust hole in the battery case or the battery case lid outside the area of the liquid level regulating tube, a plurality of holes are provided at the lower end opening of the liquid injection port and on the electrolyte surface side 1 in the storage battery. A storage battery comprising a bottom plate having a protrusion and a small hole provided in the protrusion.