JPH0347250Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electrolyte diffusion device that can be employed in storage batteries in all fields, such as storage batteries for electric vehicles and stationary storage batteries.

[Prior Art] Since a storage battery is an electrochemical device, the electrolyte plays a very important role. Modern storage battery equipment often uses systems that switch to constant-voltage charging when the charging voltage exceeds a certain value because the load does not like voltage fluctuations. In this case, even though the amount of charge is sufficient, there is almost no gassing, so the electrolyte with a high specific gravity usually remains at the bottom of the storage battery.
Furthermore, in the case of a storage battery that has a vertically elongated shape such as a storage battery for an electric car, even if the charging voltage is slightly increased and overcharging is carried out, if a high-density electrolyte remains at the bottom of the storage battery, it will not easily diffuse. For this reason, the electrode plates at the bottom of the storage battery are always in contact with the highly oxidizing electrolyte, and are therefore susceptible to corrosion, resulting in a short lifespan. Moreover, if the specific gravity of the electrolytic solution, which is a reactant, becomes lower in the upper part of the storage battery, the capacity will be extremely reduced, so all storage battery manufacturers recognize the necessity of an electrolyte stirring device. However, because stirring the electrolyte in storage batteries requires large-scale equipment, it is only used in some large storage batteries. This method is a method of stirring the electrolyte by sending compressed air into the electrolyte using a compressor, etc., and it is not a method that can be applied to small storage batteries, so there is currently no record of this type of device being installed on small storage batteries. .

[Means for Solving the Problems] The present invention provides a storage battery electrolyte diffusion device that can eliminate the above-mentioned drawbacks, and for this purpose, the present invention provides a hollow stopper that can be attached to the liquid opening of the storage battery. and penetrates the bottom of the plug body vertically, so that its lower end reaches a specified level of the electrolyte in the storage battery, and its upper end reaches a high enough level to prevent it from being blocked by the intrusion of the electrolyte. A liquid level regulating tube is provided, and a water supply pipe is provided that hangs down from the bottom of the stopper to the upper end of the storage battery element, and
The lower part of the water supply pipe is inserted and fixed into the top-shaped outer pipe through a gap by means such as a spacing piece, and further, the lower end hangs down to the inner bottom of the storage battery and the upper end is attached to the bottom of the plug body. It has a structure with an electrolyte push-up pipe that protrudes slightly from the bottom of the body, and by simply attaching it to the liquid opening of the storage battery, the electrolyte can be diffused using the gas generated by the storage battery itself. This is what I did.

[Example] Hereinafter, the storage battery electrolyte diffusion device of the present invention will be described with reference to the drawings.

Fig. 1 shows a state in which an embodiment of the storage battery electrolyte diffusion device of the present invention is installed in a storage battery, and 1 is a stopper that is installed at the liquid opening of the storage battery, and has a bottom plate 2 and an internal structure. It is hollow and has an open top end, which acts to temporarily store the electrolyte pushed up from the storage battery. Further, 3 is a liquid level regulating cylinder which is provided on the bottom plate 2 and passes through the bottom plate 2 vertically.The lower end of the cylinder extends up to the specified liquid level of the electrolyte in the storage battery, and the upper end of the cylinder reaches the specified level of the electrolyte in the storage battery, and the upper end is the cylinder that is closed when the electrolyte enters. Provided so that it reaches as high a position as possible. Reference numeral 4 denotes an electrolyte lifting pipe provided on the bottom plate 2 that hangs down to the vicinity of the inner bottom of the storage battery, and the upper end of the electrolyte lifting pipe 4 slightly protrudes above the bottom plate 2. 5 is a water supply pipe that hangs down from the bottom of the bottom plate 2 to near the top of the storage battery element;
The lower part of the water supply pipe 5 is inserted and fixed into a cup-shaped outer pipe 6 with a gap therebetween. The water supply pipe 5 and the extrapolation pipe 6 can be fixed to each other by any means that can secure the water supply passage, such as inserting a spacing piece, installing ribs, or gluing the pipes to one side of the circumference. do not have. Further, 7 is a lid that closes the upper end opening of the stopper 1, 8 is an exhaust hole provided in the lid 7, 9 is a storage battery, 10 is a liquid opening of the storage battery, 11 is an element, and 12 is an electrolytic solution.

Next, the operation of the embodiment of the present invention will be explained with reference to FIG.

First, when the lid 7 of the stopper 1 is removed and water is added from the top of the stopper 1, water passes through the water supply pipe 5, passes between the water supply pipe 5 and the extrapolation pipe 6, and falls from the upper end of the extrapolation pipe 6. and flows into the storage battery 9. The liquid level in the storage battery 9 gradually rises, and as shown in FIG.
When reaching point A, that is, the lower end of the liquid level regulating tube 3, the gas outlet in the upper space inside the storage battery 9 is blocked, and the electrolyte 12 rises inside the liquid regulating tube 3, at the same time when the internal and external pressures are balanced. At this point, the water stops falling from the upper end of the extrapolated pipe 6. As water replenishment is continued, the liquid level in the stopper 1 gradually rises, and when it reaches point B in FIG. 2a, water replenishment is stopped. This state is the state shown in FIG. 2a. In this case, the liquid level inside the extrapolation pipe 6 is at a position C at its upper end, and the liquid level inside the liquid level regulating cylinder 3 has stopped at a position D slightly higher than the liquid level A inside the storage battery 9. In this state, when gas is generated from the element 3 and the internal pressure in the storage battery 9 increases, there is a water head of D regarding the liquid level regulating tube 3, so the gas will not escape from the liquid level regulating tube 3, and the water supply Since the pipe 5 and the extrapolated pipe 6 have a water seal structure, gas will not escape from the water supply pipe 5.
Therefore, the internal pressure inside the storage battery 9 is absorbed by pushing down the liquid level A of the electrolytic solution 12 in the storage battery 9, and by pushing up the liquid level in the liquid level regulating tube 3 to D'.
It is absorbed by moving the liquid level in the extrapolation pipe 6 to C'. As a result, when the liquid level of the electrolyte 12 in the storage battery 9 is pushed down by Δh from A to A', the electrolyte at the bottom of the storage battery 9 is pushed up into the plug 1 through the electrolyte push-up pipe 4. It will be done.
This pushed-up electrolyte has a high specific gravity, and the upper end of the electrolyte push-up pipe 4 protrudes from the bottom plate 2 of the plug 1, so once it is pushed into the plug 1, it will not flow back. Further, as the electrolyte in the storage battery 9 is pushed up through the electrolyte push-up pipe 4, the liquid level in the plug body 1 rises to B'.
This state is the state shown in FIG. 2b. Next, when the internal pressure in the storage battery 9 further increases from this state and the liquid level of the electrolytic solution 12 drops to A'', the water film (△h part) at the lower end of the liquid level regulating tube 3 due to surface tension ruptures.
The water head D' in the liquid level regulating tube 3 is instantly replaced with air and falls into the storage battery 9, and at the same time, the gas in the storage battery 9 is exhausted from the liquid level regulating tube 3 to the outside.
The internal pressure within the storage battery 9 decreases. As a result, plug body 1
The electrolytic solution 12 accumulated inside passes through the water supply pipe 5, between the water supply pipe 5 and the extrapolation pipe 6, and then falls into the storage battery 9 from the upper end of the extrapolation pipe 6. This falling electrolyte has a high specific gravity at the bottom of the storage battery 9 and is mixed with a low specific gravity at the top of the storage battery 9. This state is the state shown in FIG. 2c. Then, the liquid level inside the storage battery 9 rises,
Returning to the state shown in FIG. 2a, the above-described operations are repeated again to gradually make the specific gravity of the electrolytic solution 12 uniform.

In this way, in the embodiment of the present invention, the high specific gravity electrolyte 12 at the bottom of the storage battery is moved into the plug body 1 by using the pressure of the gas generated within the storage battery, and the high specific gravity electrolyte 12 that has moved into the plug body 1 is removed. Since the electrolytic solution 12 is caused to fall into the low specific gravity electrolytic solution 12 above the element 3, the electrolytic solution 12 is diffused. Furthermore, the embodiment of the present invention can replace the generated gas with approximately the same amount of electrolyte. This is because when the inside of the water supply pipe 5 and the liquid level regulating cylinder 3 are liquid-tight, the same amount of electrolyte as the gas generated within the battery passes through the electrolyte push-up pipe 4 and is pushed up into the plug body. Therefore, even a small amount of gas equivalent to self-discharge can be effectively utilized. Therefore, there is no need for any large-scale equipment for electrolyte diffusion as in the past, and it can be used in storage batteries in all fields, such as storage batteries for electric vehicles and stationary storage batteries.

[Effects of the invention] As described above, the storage battery electrolyte diffusion device of the present invention can naturally diffuse the electrolyte using the gas generated within the storage battery, and it is possible to naturally diffuse the electrolyte using the gas generated within the storage battery. There is no need to prepare a device such as a compressor, and the electrolyte can be diffused by simply attaching this device to the liquid mouth of a storage battery in any field.A stirring device can be configured without inserting any special device into the battery. It has the advantage of being able to

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing a schematic structure of an embodiment of the storage battery electrolyte diffusion device of the present invention, and FIG. 2 is an operational explanatory diagram for explaining the operation of the embodiment of the present invention shown in FIG. . 1...Plug body, 3...Liquid level regulating tube, 4...Electrolyte pushing up pipe, 5...Water supply pipe, 6...Extrapolation pipe.

Claims (1)

[Scope of utility model registration request] It has a hollow plug that can be attached to the liquid opening of the storage battery, and penetrates vertically through the bottom of the plug, so that its lower end is at the specified liquid level of the electrolyte in the storage battery, and its upper end is at the specified level of the electrolyte in the storage battery. A liquid level regulating tube that reaches a high enough level to prevent the intrusion of water is provided, and a water supply pipe that hangs down from the bottom of the stopper to the upper end of the storage battery element is provided, and a spacing piece is installed at the bottom of the water supply pipe. An electrolytic solution pusher is inserted and fixed into the top-shaped outer pipe through a gap, and the electrolytic solution pusher is inserted and fixed into the bottom of the stopper, with its lower end hanging down to the inner bottom of the storage battery and its upper end slightly protruding from the bottom of the stopper. A storage battery electrolyte diffusion device with a structure that includes a rising pipe.