JPH0433653Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a sealed lead-acid battery that eliminates the need for electrolyte replenishment by bringing oxygen gas generated from the positive electrode into contact with the negative electrode and reducing it to water. This invention relates to a sealed lead-acid battery having a monoblock structure, in which a common battery case is divided into a plurality of compartments, and the batteries are connected in series.

[Conventional technology] Sealed lead-acid batteries generally have a completely airtight structure, and the amount of electrolyte used is extremely limited, and the negative electrode has the ability to react and absorb oxygen generated from the positive electrode during charging. It is a battery. For this reason, this battery does not require water replenishment to compensate for the decrease in electrolyte during use, and even when used in any direction, that is, even if it is turned over or turned over, the electrolyte remains There are no spills and no flammable gas or acid mist that can damage other equipment. Moreover, it has the same high reliability as conventional lead-acid batteries, so it is widely used as a power source for portable electronic devices as a battery that can be used with extreme peace of mind.

However, these batteries have a terminal voltage of 2V, but because they are designed for portable devices, their capacity is small, and if you want to obtain a battery with a relatively large capacity, you will need to use terminals such as 6V or 12V. It is necessary to use a battery with a monoblock structure that has a voltage.

FIG. 2A is a plan view showing such a conventional sealed lead-acid battery of monoblock structure, and FIG. 2B is a sectional side view of the same.

In these figures, 1 is a negative electrode terminal, 2 is a positive electrode terminal, 4 is a negative electrode plate, 5 is a separator, 6 is a positive electrode plate, and 7 is a battery case.

The battery case 7 is partitioned into small chambers S1, S2, and S3, and in the small chamber S1, one sealed lead-acid battery (terminal voltage 2V) is constituted by a negative electrode plate 4, a separator 5, a positive electrode plate 6, and the like. Small room S2, S3
In each case, one sealed lead-acid battery is similarly constructed. Then, the positive terminal E1 of the storage battery in the small chamber S1, the negative terminal E2 of the storage battery in the small chamber S2, the positive terminal E3 of the storage battery in the small chamber S2, and the negative terminal E4 of the storage battery in the small chamber S3 are connected in series in the battery case 7 as shown in the figure. is connected to.

Therefore, in this case, a sealed lead-acid battery with a monoblock structure is constructed between the negative terminal 1 and the positive terminal 2, which can provide an output voltage of 6V. If the number of cells is three, as in the present case, then a monoblock structure battery will be constructed with a terminal voltage of 6V, and if there are six cells, a terminal voltage of 12V will be constructed.

Now, in order to use a sealed lead-acid battery as a backup power source for communication, it needs to have a relatively large capacity, and a sealed lead-acid battery with a terminal voltage of 2V does not have sufficient capacity. . Therefore, in order to use a sealed lead-acid battery as a communication power source, a monoblock structure battery with a relatively large capacity is used.

By the way, these sealed lead-acid batteries use a highly concentrated electrolyte, and as a result, the electromotive force of the battery is high, and the floating charging voltage to maintain the battery is higher than that of conventional liquid lead-acid batteries. The value is higher than that of storage batteries (for example, around 2.2V).

In general, communications power supply systems employ a floating charging method, in which a load and a storage battery are connected in parallel to a rectifier output, and the rectifier output is normally used to charge the storage battery while supplying power to the load. supplying.

Therefore, the charging voltage of the storage battery needs to be within the permissible voltage range of the load such as an exchanger. For liquid lead-acid batteries, use batteries with a terminal voltage of 2V.
By using 24 batteries connected in series (terminal voltage 48V), the floating charging voltage can be kept within the load's allowable voltage range.

However, with sealed lead-acid batteries, as mentioned earlier, the floating charge voltage per battery is higher than with liquid lead-acid batteries (i.e., 2.2V instead of 2V). If a battery pack is connected in series, the voltage will exceed the allowable voltage of the load. Therefore, in order to keep the charging voltage of the battery pack within the permissible voltage range, it is necessary to reduce the number of sealed lead-acid batteries that make up the battery pack, to 23, for example.

Let us now consider the case where the above-mentioned monoblock structure battery, which corresponds to three ordinary sealed lead-acid batteries, is used to construct the assembled battery.

In this case, if the required number of monoblock batteries is N, then N=24/3=8.
However, using eight monoblock structure lead-acid batteries corresponds to 24 ordinary sealed lead-acid batteries, and cannot meet the above-mentioned requirement of 23 batteries.

In other words, even if an attempt was made to configure a communication power source using a monoblock structure type lead-acid battery, there was a technical situation in the past in which it was generally impossible to configure it for the reasons described above.

[Problem that the invention attempts to solve]

Therefore, the problem that this invention aims to solve is that while using a sealed lead-acid battery with a monoblock structure,
The point is that it enables the construction of a power source for communication, which is generally considered impossible, as it is equivalent to 23 ordinary sealed lead-acid batteries.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a sealed lead-acid battery of monoblock construction for voltage regulation, which makes it possible to do the above.

[Means and actions for solving problems]

Therefore, in this invention, the positive electrode, negative electrode, and separator are used in a sealed lead-acid battery that has a function that eliminates the need for electrolyte replenishment by bringing oxygen gas generated from the positive electrode into contact with the negative electrode and reducing it to water. A plurality of chambers for accommodating stacked electrode plate groups are provided in a certain battery case by partitioning the inside of the case, and the electrode plate group is housed in the chamber, and each electrode group is When electrically connecting the batteries, a sealed lead-acid battery with a monoblock structure for voltage regulation, which has one or more chambers that do not accommodate the electrode plate group, is made, and these batteries are combined to form a communication power source. That's why I decided to do so.

In other words, although outwardly it is no different from a normal monoblock structure battery, in terms of battery capacity,
The problems of the prior art can be solved by creating a separate battery with only 1/3 or 2/3 of the capacity for voltage regulation and using it in combination as needed.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1A is a plan view showing an embodiment of the present invention, and FIG. 1B is a sectional view of the same side.

In these figures, the same reference numerals are used for the same parts as in Figure 2. In addition, 3 denotes a connecting wire, and 8 denotes a spacer.

In the configuration shown in FIG. 1, as is clear from a comparison with FIG. A spacer 8 is filled as a filler. The positive terminal E1 in the small chamber S1 and the negative terminal E4 in the small chamber S3 are directly connected within the container 7 by the connecting wire 3.

In other words, according to the embodiment of the present invention shown in Fig. 1, although it looks exactly the same as an ordinary sealed lead-acid battery with a monoblock structure, its capacity is 2/3 that.
A voltage regulating battery with a terminal voltage of 4V is provided.

Therefore, for example, if it is necessary to construct a battery assembly consisting of 23 cells (single sealed lead-acid battery), it is necessary to construct a battery assembly consisting of 23 cells (single sealed lead-acid battery) and 7 regular sealed lead-acid batteries of monoblock structure with a terminal voltage of 6V as shown in this example. By connecting one battery having a monoblock structure for voltage adjustment, a battery assembly of 23 cells can be easily constructed.

Also, when configuring a battery pack with 22 cells,
As an embodiment of the present invention, a monoblock structure battery for voltage regulation with a terminal voltage of 2V is prepared, filling two of the three small chambers, and by combining it with this, the required voltage can be obtained in the same way. An assembled battery can be constructed.

When manufacturing a battery with a monoblock structure for voltage regulation according to the present invention, there is no need to prepare any special battery parts, and the materials used for manufacturing the conventional monoblock structure battery, such as containers and electrode plates, are simply used. If possible, it can be manufactured using exactly the same manufacturing method as a conventional monoblock structure battery.

If an assembled battery with 23 cells is to be constructed without using the monoblock structure battery for voltage adjustment according to the present invention, it would be necessary to construct a battery assembly with 7 ordinary monoblock structure type sealed lead acid batteries and a monoblock with a terminal voltage of 2V. Conventional sealed batteries with different structures will be used together, but in this case, because the battery models (structural dimensions) are different, workability during manufacturing may decrease, and
Connecting different models may have an adverse effect on the entire assembled battery.

Furthermore, a mold for separately making a new container for the 2V battery is required, which impedes mass production and causes a significant increase in costs economically.

However, if the monoblock structure battery for voltage regulation according to the present invention is used, its shape is the same as that of a normal monoblock structure sealed lead acid battery, so it is economical in terms of cost when constructing an assembled battery. There is no reduction in work efficiency in manufacturing, and there is no unbalance in the overall capacity of the assembled battery, especially when different models are connected in series.
It is also possible to eliminate adverse effects on the assembled battery.

[Effect of idea]

As explained above, the monoblock structure battery for voltage regulation according to the present invention is obtained by providing a spacer in place of the battery in an arbitrary number of small chambers in a normal monoblock structure battery. Therefore, it is possible to create a battery that has the same shape as a normal monoblock battery but has a lower output voltage.

Because of this structure, it is necessary to reduce the number of cells that make up the assembled battery in order to configure the assembled battery using monoblock structure batteries and keep the charging voltage within the permissible voltage range on the load side. If this is not possible, it is possible to construct an assembled battery with the number of cells reduced by the required number by using the monoblock structure battery for voltage adjustment according to the present invention.

Without the voltage regulating battery of the monoblock structure according to the present invention, it would be difficult to configure a communication power source using only an ordinary sealed lead-acid battery of monoblock structure, and therefore it would be difficult to construct a power source for communication using only a sealed lead-acid battery of ordinary monoblock structure. This meant that I would have no choice but to use it with batteries that were not compatible. However, according to the present invention, it has become possible to configure a communication battery assembly using only batteries belonging to the same model by adopting a monoblock structure.

In manufacturing the monoblock structure battery for voltage regulation according to the present invention, there is no need to prepare any special parts, and the battery can be easily manufactured using the parts necessary for manufacturing a normal monoblock structure battery. Also, by realizing this invention, a monoblock structure is not required.
This invention eliminates the need for a voltage adjustment battery with a 2V output, and is extremely effective in standardizing battery models and increasing mass productivity.

Although the present invention has been described using a 6V monoblock battery as an embodiment, it goes without saying that other embodiments such as a 12V monoblock structure are also possible.

[Brief explanation of the drawing]

Fig. 1A is a plan view showing an embodiment of the present invention, Fig. 1B is a sectional view of the same side, Fig. 2A is a plan view showing a conventional monoblock structure type sealed lead acid battery, and Fig. 2B is the same side sectional view. It is a side sectional view. Explanation of symbols, 1...Negative terminal, 2...Positive terminal,
3... Connection wire, 4... Negative electrode plate, 5... Separator, 6... Positive electrode plate, 7... Battery case, 8... Spacer.

Claims (1)

[Scope of claim for utility model registration] In a sealed lead-acid battery that has a function that eliminates the need for electrolyte replenishment by contacting and reacting oxygen gas generated from the positive electrode with the negative electrode and reducing it to water, the positive electrode, negative electrode, A plurality of chambers for accommodating a group of electrode plates laminated with separators are provided in the battery case by partitioning the inside of a certain battery case, and each chamber accommodates the group of electrode plates in the chamber. A sealed lead-acid battery of monoblock structure for voltage regulation, characterized in that, when electrically connecting the electrode plate groups, one or more chambers are provided that do not accommodate the electrode plate groups.