JPH01302658A - Storage battery with electrolyte agitating device - Google Patents

Abstract

PURPOSE:To enhance the agitating efficiency for electrolyte by putting a small hole formed in the side wall of a cylinder in its position above the bottom of a gas collecting device in communication with an opening, arranged in the upper part of the gas collecting device, through a syphon strap in the inverted U form. CONSTITUTION:A hollow cylinder 4 for pumping the electrode is arranged between a group of electrode plates 1 and the inner wall of battery jar 2, and a small hole 5 of gas send-in hole furnished in the upper part (a little above the bottom of a gas collecting device) of this hollow cylinder 4 is situated above the bottom of the gas collecting device. Therein an opening 7 is furnished in the upper part of gas collecting device 6 in inverted tray form arranged in the electrolyte 3 above the group of electrodes 1 and put in communication with the abovementioned small hole 5 through a syphon strap 8 in inverted U form. This enables efficient agitation of the electrolyte in simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a storage battery equipped with an electrolyte stirring mechanism.

Conventional technology and its problems Since the electrolyte is a reactive substance for storage batteries, it is well known that, like the active material of the electrode plates, how the electrolyte is used within the battery greatly affects the capacity of the storage battery. It is.

However, in the case of lead-acid batteries, the electrolyte at the top of the battery is often used during charging and discharging, so the specific gravity of the electrolyte at the top of the battery is low, and the electrolyte with high specific gravity always remains at the bottom of the battery. In order to eliminate the concentration difference between these electrolytes, overcharging is applied to generate gas, and the stirring action of this gas is used to equalize the upper and lower specific gravity. In this case, if the storage battery is vertically low, it is relatively easy to equalize the electrolyte by overcharging, but if the battery is tall, such as an electric car storage battery, even a small amount of overcharging usually does not make the electrolyte uniform. be.

As a result, the capacity decreases due to the low specific gravity electrolyte at the top of the electrode plate, and the highly oxidizing electrolyte with high specific gravity always remains at the bottom, which corrodes the bottom edge of the electrode plate and shortens its life. It becomes. For these reasons, storage batteries are overcharged every time they are charged, which wastes power and shortens the life of the storage battery.

In addition, in the case of stationary storage batteries, various loads are connected to the storage battery, and some loads do not like large voltage fluctuations, so overcharging is not possible, and low-voltage charging is performed where the charging voltage is kept at a constant value. In storage batteries for this type of use, the above-mentioned phenomenon becomes even more remarkable. Also,
In order to solve these problems, equal charging was carried out over a long period of 12 to 24 hours, but since the equal charging voltage was low, the above problems could not be solved satisfactorily.

Means for solving the problem of interpolation points The present invention is to replace the storage battery with an electrolyte stirring device that eliminates the above-mentioned drawbacks. A hollow cylinder reaching near the surface level is provided, and a gas collection device is installed above the electrode plate group, and a small hole formed above the lower end of the gas collection device in the side wall of the hollow cylinder and the upper part of the gas collection device are provided. The device is characterized in that it is connected to the opening provided in the opening through an inverted U-shaped siphon strap.

EXAMPLE Hereinafter, an example of the present invention will be explained in detail with reference to the drawings.

In the figure, l is a plate group, 2 is a battery case containing the plate group, 3 is an electrolyte, 4 is a plate 15 disposed between the horizontal plate group and the inner wall of the battery case, and Hollow node 5 is a small hole for gas supply provided in the upper part of the hollow node (slightly above the lower end of the gas collector), and is located above the lower end of the gas collector, which will be described later. Reference numeral 6 denotes an inverted dish-shaped gas collection device placed in the electrolyte above the electrode group, 7 an opening provided at the top of the gas collection device, and 8 a connection between the opening 7 of the gas collection device and the hollow node. This is an inverted U-shaped cypons drag that connects the small holes 5.

Next, the operation of the apparatus of the present invention will be explained using FIG.

In FIG. 3(A), gas generated from the electrode plate group due to charging is collected by a gas collecting device 6, passes through an opening 7, and is gradually accumulated in an inverted U-shaped siphon strap 8. As a result, the liquid level inside the siphon strap is gradually pushed down, and when this liquid level falls below the small hole 5 in the side wall of the hollow cylinder, the accumulated gas enters the hollow node 4 from the small hole 5 (the third Please refer to Figure (b) @). In order to prevent the accumulated gas from escaping from the lower end of the gas collector, the position of the small hole 5 is set 5 mm to 151111 higher than the lower end of the gas collector.

When gas accumulates in the siphon strap 8 and the internal pressure further increases, the buoyancy of the gas (bubbles) that has entered the hollow cylinder and the gas pressure in the siphon strap, that is, the water head 81 in Figure 3 (b), causes the hollow cylinder to rise. The electrolytic solution above the air bubbles in the siphon strap and a part of the gas in the siphon strap are instantaneously released to the outside from the upper end of the hollow node. The transient state at this moment is shown in FIG. 3 (c).

At this time, the water head inside the hollow node 4 decreases rapidly, and at the same time,
As the internal pressure of the siphon strap 8 also decreases, the electrolyte rises rapidly from the opening 7 of the gas collection device, and due to the acceleration, the liquid level in the siphon strap transiently rises above the electrolyte level in the storage battery. Rise. In addition, if the gas collection device and the small hole of the hollow joint are directly connected without using the inverted U-shaped siphon strap 8, or if the inverted IJT type siphon strap 1
- If the upper end of the wrap is not located above the upper end of the hollow cylinder, the upper electrolyte with a lower specific gravity is in the hollow cylinder fl! Since the electrolyte flows into the hollow cylinder through the small hole in the J wall (faster than the electrolyte at the bottom of the container is sucked up), the electrolyte cannot be stirred effectively.

Next, as shown in FIG. 3(d), the electrolytic solution with a high specific gravity at the bottom of the container is pushed up into the hollow cylinder by the water head 11 from the lower end opening of the hollow node, and H×ρ−142XρO (ρ is the electrolyte ρO is the specific gravity of the electrolyte at the bottom of the battery, 1] is the level of the electrolyte in the battery, and H2 is the level of the liquid in the hollow cylinder. The electrolytic solution also enters into the strap through the small hole 5 of the hollow node, and the liquid level on the left and right sides of the siphon strap is balanced above the position of the small hole of the hollow node.

In this state, if gas is accumulated again in the Saibon strap, a small hole 51'l! The electrolytic solution that has entered the tube 1 is pushed back into the hollow node 4, and the liquid level in the hollow tube rises by that amount. Further, when the gas pressure reaches a certain value or more, two parts of the electrolyte are discharged to the outside from the small hole in the hollow cylinder in the same manner as explained in FIGS. 3(B) and 3(C).

Note that the larger the cross-sectional area inside the hollow cylinder, the greater the amount of electrolyte discharged at one time, but if the inner diameter of the hollow cylinder is 8.
If the diameter exceeds φ, the air bubbles in the cylinder will break and the discharge rate will decrease, so it is desirable that the inner diameter of the hollow cylinder be 81Il or less.

Moreover, the lower the position of the small hole 5 is than the upper end of the hollow cylinder 4, the more
The amount of water discharged per time is large, and the difference in specific gravity between the bottom and top of the container is large, increasing the efficiency of suction. However, when this device is installed inside a battery, the upper and lower specific gravity becomes almost uniform due to the gassing of the battery itself and the stirring action of this device each time it is charged, so in practice, it is difficult to connect the upper end of the hollow cylinder and the small hole. The distance may be set to about 3 cl.

Effects of the Invention The storage battery of the present invention has the structure as described above, and the lower end of the gas collecting device disposed above the electrode plate group is located in the electrolyte, and captures a part of the gas generated in the electrode plate group. It may be of any shape as long as it can collect the gas.Also, a thin hollow cylinder is inserted into the gap between the electrode plate group and the inner wall of the battery case, and a small hole provided in the side wall of the hollow cylinder is connected to the gas collection. An extremely simple W4 that connects to the device with an inverted U-shaped siphon strap.
The electrolyte can be efficiently agitated due to its structure, making it an epoch-making product that can be applied to all kinds of storage batteries.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view showing one embodiment of a storage battery with an electrolyte stirring device of the invention, Fig. 2 is a perspective view showing an internal radius of the storage battery of the invention, and Figs. 3 (A) to (E) are in accordance with the invention FIG. 3 is an explanatory diagram of the operation of the device. 1... Electrode plate group 2... Battery case 3.
... Electrolyte 4 ... Hollow cylinder 5 ...
...Small hole 6...Gas collection device 7
・・・・・・Opening 8・・・・・・Put the siphon strap on the 3rd hole (D)

Claims (1)

[Claims] A hollow cylinder reaching near the highest liquid level of the electrolyte from the bottom of the battery case is provided between the electrode plate group and the inner wall of the battery case, and a gas collection device is installed above the electrode plate group to collect the gas on the side wall of the hollow cylinder. A storage battery electrolyte stirring device characterized in that a small hole formed above the lower end of the gas collecting device and an opening provided at the top of the gas collecting device are connected by an inverted U-shaped siphon strap.