JPH0120771Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an alkaline battery, and particularly to one in which a plurality of alkaline batteries are housed in a case so that they can be used as if they were one battery.

In general, this type of alkaline assembled battery starts with a battery case 1, as shown in Fig. 1, a conventional example.
0 contains a plurality of alkaline batteries 22, 22..., and these alkaline batteries 22,
22... are connected in series or in parallel within the case 10 to form the alkaline cell block 20.
Next, the positive terminal and negative terminal of this alkaline battery block 20 are connected to a positive external terminal 28 and a negative external terminal 30 via plate-shaped or linear lead members 34 and 36 inside the case 10. . The battery case 10 has a terminal mounting plate 12 at its upper part, a bottom plate 14 at its lower part, and an exterior jacket 16 around its outer periphery. A positive external terminal 28 and a negative external terminal 30 are attached to the terminal mounting plate 12 as so-called stud-type snap terminals with hooks 32, 32. The positive external terminal 28 and the negative external terminal 30 are connected to the positive lead member 3, respectively.
4 and a negative electrode lead member 36 to the positive and negative terminals of the alkaline cell block 20. In the illustrated example, the alkaline cells 22 of the cell block 20 are connected in series to each other by an inter-battery connection conductor 24 supported by an insulating plate 26. In the illustrated example, six alkaline batteries 22 are connected in series, so that the distance between the positive external terminal 28 and the negative external terminal 30 is 1.5×6.
=9 volts of electromotive force can be obtained.

By the way, since this type of alkaline assembled battery uses an alkaline electrolyte, that is, an alkaline unit cell, its discharge performance is excellent, but the alkaline electrolyte tends to leak from each unit cell 22. There's a problem. The alkaline electrolyte has a very strong leakage power, and therefore it is still difficult to completely prevent the leakage. Therefore, even in this type of alkaline assembled battery, the alkaline cells 22,
22... must be prepared for the possibility of alkaline electrolyte leakage. However, the alkaline electrolyte has extremely strong chemical corrosive power, so even if the leakage is extremely small, if it leaks outside the case 10, it will cause considerable damage to the battery while it is being used. This may affect the equipment used. Furthermore, the alkaline electrolyte slightly leaked from the alkaline battery creeps up along the lead members 34, 36 and reaches the external terminals 28, 30, corroding these terminals 28, 30, thereby causing the Failures such as poor contact will occur first. especially,
The alkaline electrolyte that has climbed up to the external terminals 28 and 30 becomes electrochemically corrosive due to the electromotive force of the battery that is generated between the external terminals 28 and 30. The corrosive effect of the alkaline electrolyte in these areas becomes even more pronounced. In this way, the alkaline electrolyte is applied to the external terminal 2.
The phenomenon of creeping up to 8 and 30 is particularly noticeable on the negative electrode side, and this is because the electrical capillary phenomenon caused by the electromotive force of the battery is particularly likely to occur on the negative electrode side. As described above, in conventional alkaline assembled batteries, there have been many accidents in which the alkaline electrolyte leaked from the internal alkaline cells leaked to the outside of the case 10 via the lead members 34 and 36.

This idea was made in view of the conventional problems mentioned above, and its purpose is to prevent even if a small amount of alkaline electrolyte leaks inside the battery case. An object of the present invention is to provide an alkaline assembled battery that can prevent liquid from immediately leaking to the outside of the case and causing direct damage to, for example, battery-applied equipment.

In order to achieve the above object, this invention includes a case 10, an alkaline battery 22, a positive external terminal 28, a negative external terminal 30, a positive lead member 34, a negative lead member 36, and a creep-resistant member. 40, the positive electrode lead member 34 and the negative electrode lead member 36 are:
The creep-resistant member 40 is made of a viscous material, and the alkaline batteries 22 are housed in the case 10 as blocks connected in series or in parallel. The positive electrode lead member 34 connects between the positive terminal of the alkaline cell 22 and the positive external terminal 28, and the negative electrode lead member 36
The negative electrode terminal of the alkaline unit cell 22 and the negative external terminal 30 are connected, and at least the intermediate portion of the negative electrode lead member 36 is covered with the creep-resistant member 40.

Hereinafter, preferred embodiments of this invention will be described based on the drawings. Note that common or corresponding parts in each figure are indicated using the same reference numerals.

FIGS. 2 and 3 show an embodiment of an alkaline assembled battery according to this invention. The basic structure of the alkaline battery shown in the figure is the same as the conventional one described above. That is, a plurality of alkaline batteries 2 are placed in a case 10 having a terminal mounting plate 12, a bottom plate 14, and an exterior jacket 16.
2, 22, . . . are connected in series to form an alkaline cell block 20. and,
A positive terminal and a negative terminal of this alkaline cell block 20 are connected to a positive external terminal 28 and a negative external terminal 30 via a positive lead member 34 and a negative lead member 36, respectively. The alkaline cells 22, 22, . . . are connected in series by an inter-battery connection conductor 24 supported by an insulating plate 26. The positive external terminal 28 and the negative external terminal 30 are connected to the terminal mounting plate 12 by means of hooks 32 and 32, respectively.
is attached to. Furthermore, positive and negative lead members 34 and 36, which connect these external terminals 28 and 30 and the positive and negative terminals of the alkaline battery block 20, are each formed of a strip-shaped metal conductive plate. . Here, the feature of this invention is that the intermediate portions of the positive electrode lead member 34 and the negative electrode lead member 36 are each liquid-tightly coated with a material that inhibits creep of alkali, that is, a creep-resistant material 40. As the creep-resistant material 40, for example, a bituminous material such as pitch, an uncured epoxy resin, or other viscous alkali-resistant material is used. The creep-resistant material 40 is applied to the middle portions of the lead members 34 and 36 by means of coating or the like.

Now, the creep-resistant material 40 coated on the respective intermediate portions of the lead members 34, 36 prevents the alkaline electrolyte from creeping on the lead members 34, 36, thereby preventing the lead members 34, 36 from creeping.
6 to the outside of the case 10 is blocked, and as a result, even if some alkaline electrolyte leaks inside the case 10, this will be stopped immediately. It is possible to prevent the liquid from leaking out of the case 10 and causing damage to, for example, battery-applied equipment. In this case, it is desirable that the creep-resistant material 40 be applied to both the positive and negative lead members 34 and 36, respectively, as in the embodiment, but it is sufficient to apply it only to the negative lead member 36. effect can be obtained. This is because, as mentioned above, creep of the alkaline electrolyte is particularly likely to occur on the negative electrode side, and therefore, even if the creep-resistant material 40 is coated only on the intermediate portion of the lead member 36 on the negative electrode side, As a result, the negative electrode lead member 3
6 to the outside of the case 10 is blocked, and leakage of the alkaline electrolyte to the outside is substantially suppressed.

As described above, the alkaline assembled battery according to this invention has an extremely simple structure in which at least the intermediate part of the negative electrode lead member that connects the negative electrode terminal of the alkaline cell block and the negative electrode external terminal is coated with a creep-resistant material. Just by adding it, you can reliably suppress the leakage of alkaline electrolyte to the outside of the case, and even if a small amount of alkaline electrolyte leaks inside the case, this will be immediately removed from battery application equipment, etc. Things that cause damage can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of a conventional alkaline assembled battery, Fig. 2 is a sectional view showing an embodiment of an alkaline assembled battery according to this invention, and Fig. 3A is a sectional view of a main part of an alkaline assembled battery according to this invention. Figure, Figure 3B
is a sectional view taken along line A-A in FIG. 10... Case, 12... Terminal mounting plate, 14...
... Bottom plate, 16 ... Exterior jacket, 20 ... Alkaline cell block, 22 ... Alkaline cell battery,
24... Inter-battery connection conductor, 26... Insulating plate, 28
...Positive external terminal, 30...Negative external terminal, 32
... Eyelet, 34 ... Positive electrode lead member, 36 ...
Negative electrode lead member, 40...creep-resistant material.

Claims (1)

[Claims for Utility Model Registration] An alkaline battery comprising a case 10, an alkaline cell 22, a positive external terminal 28, a negative external terminal 30, a positive lead member 34, a negative lead member 36, and a creep-resistant member 40. It is an assembled battery, and the positive electrode lead member 34 and the negative electrode lead member 36
is made of a linear or plate-like metal member; the creep-resistant member 40 is made of a viscous substance; and the alkaline batteries 22 are connected in series or in parallel in a plurality of blocks in the case 10. The positive electrode lead member 34 connects between the positive terminal of the alkaline unit cell 22 and the positive external terminal 28, and the negative electrode lead member 36 connects the negative terminal of the alkaline unit battery 22. and the negative electrode external terminal 30, and at least an intermediate portion of the negative electrode lead member 36 is covered with the creep-resistant member 40.