JPH0448633Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a storage battery equipped with a water replenishment tap for bulk water replenishment.

[Prior Art] When a large number of single cells are assembled and used as an assembled battery, such as storage batteries for electric cars and electric vehicles, a bulk water replenishment device is required to simplify maintenance, and various types of A bulk water replenishment method is used. Among these, a) the water refill head can be freely selected, b) water can be refilled even if the storage battery is slightly tilted, c) the water refill speed is fast, and d) the structure can be designed to prevent ignition or explosion through the water supply tube.
For these reasons, a system using a type of filler tap that uses a float valve to open and close the filler port, as shown in FIG. 4, is often used. Referring to FIG. 4 in detail, reference numeral 17 denotes a water refilling valve main body, which is attached to the cell cover 18 via a packing 19. Further, the refilling faucet main body 17 has a refilling chamber 20 inside thereof, and the refilling liquid flows into the refilling chamber 20 through the water supply channel 21 and the water supply pipe 22, and once accumulates in the refilling chamber 20, it is then refilled. It has a structure in which water flows into the cell through the water port 23. Further, a float valve 24 is arranged below the water replenishment port 23, and the float valve 24 is supported so as to freely move up and down depending on the top and bottom of the electrolyte level of the unit cell. Therefore, when the electrolyte level of the unit cell rises to the specified maximum level, the float valve 24 rises to close the refilling port 23, and the flow of rehydration solution into the unit cell is stopped. Further, 25 is an electrolyte liquid level indicator provided integrally with the float valve 24.

[Problems to be Solved by the Invention] However, the above-mentioned conventional water tap has the following drawbacks due to its structure. If the float of the float valve is not large enough to fit in a limited space, and the buoyancy of the float valve is small and the refilling pressure is high, the refilling port may be blocked by the float valve due to the refilling pressure. When the battery was forced open, rehydration fluid sometimes leaked from the refill port into the cell even after the water was turned off.

[Means for Solving the Problems] The present invention provides a storage battery with a water filler tap that eliminates the drawbacks of the conventional float type water filler valve as described above. That is, the present invention provides a water replenishment chamber having a water refill port that communicates with the battery on the top surface of the water replenishment chamber in the water refill faucet main body, a water refill port closing body that blocks the water refill port in the water replenishment chamber, and a water refill port blocker that blocks the water refill port. A protruding rod that penetrates the water replenishment port and projects above the water refill port is integrally provided in the body, and a protruding rod that is attached to one end of a shaft that is rotatably attached to a fulcrum provided inside the water refill valve main body is attached adjacent to the water refill chamber. A float body is constructed by attaching a refilling port opening that moves in conjunction with the float body to the other end of the provided float portion, and by abutting the refilling port opening and a protruding rod, the displacement of the float portion can be prevented. A water replenishment port closing body that utilizes water replenishment water pressure and has a structure in which the degree of protrusion of the protruding rod of the water refill port closure body from the water replenishment port is controlled in conjunction with the water replenishment port closing body to control the blocking of the water refill port by the water refill port closure body. To provide a storage battery equipped with a water replenishment tap that closes the water refill port.

[Example] Hereinafter, the storage battery of the present invention will be explained using an example shown in FIGS. 1 to 3. In FIGS. 1 to 3, reference numeral 1 denotes a main body of a water refilling faucet, which is attached to a cell cover 2 via a packing 3. Further, the water supply faucet main body 1 is made of a transparent material. Further, although the upper end of the main body 1 of the faucet is shown in an open state in the figure, it is normally closed with a cap.
Reference numeral 4 denotes a water replenishment chamber which is provided in the center of the water refill faucet body 1 and has a water refill port 5 at the top that communicates with the battery, and one feature is that the water refill chamber is configured to have the water refill port on the top surface. . Further, the refilling chamber 4 communicates with a water supply channel 6 provided at the upper part of the refilling faucet main body 1. A water supply tube is connected to the water supply channel 6, and when water is replenished from the water supply tank through the water supply tube, the replenished water solution flows into the water supply channel 6. Further, in this embodiment, a hanging plate 7 is suspended within the water replenishment chamber 4 to provide a water seal mechanism. Reference numeral 8 denotes a water replenishment port closing body disposed in the water refill chamber 4, which closes the water replenishment port 5 using water pressure. Further, the water replenishment port closing body 8 is made of a material whose specific gravity is smaller than the specific gravity of the water replenishment liquid. Further, the water filling port closing body 8 is integrally provided with a protruding rod 9 that passes through the water filling port 5 and projects above the water filling port. 10 is a float body, which has a shaft 12 and a float portion 13. The shaft 12 is rotatably mounted on a fulcrum 11 provided at the upper part of the water replenishment chamber 4 in the main body 1 of the water replenishment faucet. Furthermore, a float portion 13 is provided at one end of the shaft 12 adjacent to the water replenishment chamber 4, and a water refill port opening 14 is provided at the other end to come into contact with the protruding rod.
The float part 13 is made of synthetic resin or foam material, or a combination of the two, so that it moves up and down in response to the electrolyte level of the cell, and the shaft moves in conjunction with the displacement of the float part 13. 12 is designed to rotate. Further, when the shaft 12 rotates, the water replenishment opening 14 also moves in accordance with the rotation. Therefore, the water filler opening 14 is displaced in conjunction with the displacement of the float portion 13, and the degree of protrusion of the protruding rod 9 of the water filler port closing body 8 from the water filler port 5 is controlled. Reference numeral 15 denotes a specific point inspection port, which also serves as an inlet for the water replenishment solution discharged from the water replenishment port 5 to flow into the battery.

Next, the water stopping principle of the above embodiment of the present invention will be explained.
First, when the liquid level of the electrolyte is low, the float part 13 also goes down as shown in the actual battle in Figure 3, and the water replenishment opening 14 also goes down accordingly. Acts to push the protruding rod 9 of the water inlet closing body 8 into the water replenishment chamber 4, and the water inlet closing body 8
Therefore, the water replenishment port 5 is not closed, and the water refill port 5 is open. When refilling is performed in this state, the refilling liquid supplied from the refilling tank to the water supply channel 6 via the water supply tube flows into the refilling chamber 4, and then passes through the refilling port 5 and the specific point inspection port 15 into the cell. flows into. At this time, the water replenishment liquid spouted from the water replenishment port 5 hits the water replenishment port opening 14, but the distance from the shaft 12 to the float portion 13 is smaller than the distance from the part of the water refill port opening 14 that the protruding rod 9 touches to the shaft 12. Since this is sufficiently large and the weight of the float part 13 can be secured sufficiently, the water replenishment port opening 14 is pushed up by the hydraulic pressure of the rehydration liquid spouted from the water replenishment port 5, and the float part 13 is lifted up. No. 13 malfunction will occur. Next, as the level of the electrolyte solution gradually rises as water replenishment progresses, the float portion 13 also rises as it rises.
Moreover, the water replenishment opening 14 also rises. At this time, as the refilling port opening 14 rises, the degree of protrusion of the protruding rod 9 from the refilling port 5 increases, and the refilling port closing body 8 operates to gradually close the refilling port 5. Note that the refilling water closing body 8 is pushed by its own buoyancy and the water pressure of the refilling water, and reliably performs the above-described operation. Next, when the level of the electrolytic solution reaches the specified maximum level, the float portion 13 rises completely as shown by the broken line in FIG. 3, and the refilling port opening 14 also rises completely. At that time, the protruding rod 9
The tip of the water refill port is separated from the water replenishment port opening 14, and the water refill port closing body 8 closes the water refill port 5 by its own buoyancy and the water pressure from the water replenishment, and the flow of rehydration liquid from the water refill port 5 into the cell is stopped. , water replenishment work has been completed. That is,
When the water is stopped, the refilling port closing body 8 closes the refilling port opening 14
Because it is more free, it is not subject to any force other than water pressure,
Since the replenishing water pressure is applied in the direction of closing the water replenishment port 5, the water stop performance is extremely excellent. Further, as is clear from the above, the water stop performance is not affected by the size of the float portion 13. In addition, since the float part 13 and the refilling port opening 14 are attached to a common shaft and using the principle of leverage, the hydraulic pressure of the refilling liquid spouted from the refilling port 5 causes the refilling port opening 14 to be moved during or when refilling is in progress. The float part 13 is lifted up by being pushed up by the water edge, and the water stop time is not too early and the liquid level does not become low, and it operates accurately at the specified liquid level.

Further, as shown in FIG. 3, if an electrolyte level indicator 16 is provided by extending the tip of the water filler opening 14, the electrolyte level can be displayed. That is, if the tip of the electrolyte level indicator 16 is falling, it indicates that the electrolyte is low, and if it is rising, it indicates that the specified level has been reached.

[Effects of the invention] As described above, the refilling valve used in the storage battery of the present invention uses the buoyancy of the refilling port closing member and the refilling water pressure to press the refilling port closing member provided in the refilling chamber against the refilling port, thereby closing the refilling port. Because of this, water can be completely shut off, and there is no problem of overfilling due to leakage of rehydration fluid from the refilling port after the water is stopped, and there is also a mechanism to control the blockage of the refilling port by the refilling port blocker. Since it utilizes the principle of a lever, it has excellent advantages such as being able to very accurately equalize the movement of the float body and the movement of the water filling port closing body.

[Brief explanation of the drawing]

FIG. 1 is a top view showing an embodiment of a water filler valve used in the storage battery of the present invention, FIG. 2 is a sectional view corresponding to the sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-- FIG. 4 is a cross-sectional view corresponding to the B-line cross-section, and is a cross-sectional view of essential parts showing an example of a conventional storage battery of this type. 1... Refilling faucet main body, 4... Refilling chamber, 5... Refilling port, 8... Refilling port closing body, 9... Projecting rod, 10...
... Float body, 11 ... Fulcrum, 12 ... Axis, 13
... Float part, 14 ... Water replenishment opening.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A water replenishment chamber provided within the main body of a water refill faucet,
A water replenishment chamber has a water refill port that communicates with the inside of the battery on the top surface of the water refill chamber; a water refill port closing body provided in the water replenishment chamber that closes the water refill port; a protruding rod that penetrates the water replenishment port and projects above the water replenishment port; a float body comprising a shaft and a float portion, the shaft being provided at the top of the water refill chamber; It is rotatably mounted on a fulcrum, and one end of the shaft is provided with a float part adjacent to the water replenishment chamber, and the other end is provided with a water replenishment port opening that comes into contact with the protruding rod. and a replenishment faucet configured to be displaced in conjunction with the displacement of the float portion, and to control the degree of protrusion of the protruding rod from the replenishment inlet to control the blockage of the refill inlet by the replenishment inlet closing body. Equipped with a storage battery. 2. The storage battery according to claim 1, wherein the refilling port opening of the float body also serves as an electrolyte level indicator.