JPH0684677U - Sealed lead acid battery - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a long-life sealed lead-acid battery with excellent vibration resistance. The present invention is a sealed lead-acid battery having an electrode plate group 1 and a battery case 7, wherein the electrode plate group 1 has a positive electrode plate 2, a separator 4 and a cathode plate 3 stacked in a horizontal direction. The ears 2a or 3a having the same polarity are connected by the straps 5 and 6, and the width W is shorter than the height h of the working surfaces of the electrode plates 2 and 3, and the battery case 7 is connected to the electrode plate group 1. It is characterized in that it is fixed by a resin 10 on the opposite side of the straps 5 and 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sealed lead acid battery.

[0002]

[Prior art]

 In general, a cathode absorption type sealed lead acid battery has a structure in which oxygen gas generated during charging is absorbed by a cathode plate and reacted with a cathode active material to prevent gas discharge to the outside. Conventionally, in this type of lead-acid battery, a required number of negative and positive plates are each provided with a retainer made of fine glass fibers for impregnating and holding an electrolytic solution, and electrode plates composed by alternately stacking them are vertically charged. In some cases, the electrode plate group was housed in a bath and the entire surface of the electrode plate group was dipped, or a slightly larger amount of the electrolytic solution was poured and dipped.

In such a lead storage battery, the electrolyte solution is pushed out from the electrode plate group by the oxygen gas generated at the end of charging, and the flowable electrolyte solution is accumulated in the gap around the electrode plate group to further charge the lead storage battery. Continuing, the electrolytic solution around the electrode plate group is reduced by water decomposition, and the specific gravity of the electrolytic solution is increased and the liquid level is decreased. That is, the electrolyte having a high specific gravity moves to the lower part of the electrode plate group, and a difference in specific gravity occurs between the electrolytic solution and the electrolytic solution held by the fine glass fibers in the upper part. It was one of the causes to reach.

By the way, such a stratification phenomenon occurs in the vertical direction of the electrode plate group, so that the width of the electrode plate group 1 is shorter than the height h of the working surface of the electrode plate 2 as shown in FIG. For example, it is known that the stratification phenomenon can be suppressed by housing the electrode plate in the battery case so that the working surface is horizontal.

[0005]

[Problems to be solved by the device]

 Although the action surface of the electrode plate is horizontal, it has the above-mentioned advantage, but the problem that the separator is damaged due to the vibration of the battery etc. due to the load of the electrode plate group being applied to the electrode plate and the separator under the electrode plate group. Had.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a long-life sealed lead-acid battery having excellent vibration resistance.

[0007]

[Work]

 If the working surface of the electrode plate is horizontal, the height of the battery can be reduced and the stratification phenomenon of the electrolyte can be suppressed. By fixing the opposite side of the strap of the electrode plate group to the side wall of the battery case with resin, it is possible to prevent an upper load from being applied to the electrode plate and the separator below the electrode plate group.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a lateral sectional view thereof, in which a separator 4 is interposed between a positive electrode plate 2 and a negative electrode plate 3 and electrode plates 2 and 3 are provided. The electrode plates are stacked such that the working surfaces are in the horizontal direction, and the electrode parts 2 and 3 of the same polarity are connected by the straps 5 and 6 to the ears 2a and 3a. A battery case, 8 is a positive electrode pole column implanted in the positive electrode strap 5, 9 is a negative electrode pole column implanted in the negative electrode strap 6, and 10 is a resin for adhering and fixing the electrode plate group 1 and the battery case 7. h is the height of the working surface of the electrode plates 2 and 3, and is the height of the electrode plates excluding the ears 2a and 3a when the electrode plates 2 and 3 are erected with the ears 2a and 3a facing up. W is the width of the electrode group 1, and is the height from the lowermost electrode plate to the uppermost electrode plate when the working surfaces of the electrode plates 2 and 3 are horizontal as shown in FIG. As shown in FIGS. 1 and 2, the width W of the electrode plate group 1 is shorter than the height h of the working surfaces of the electrode plates 2 and 3 so that the working surfaces of the electrode plates 2 and 3 are horizontal. 1 is housed in a battery case 7, and the electrode plate group 1 and the battery case 7 are bonded and fixed by a resin 10 on the opposite side of the straps 5 and 6.

A sealed lead acid battery of the present invention having such a structure and a sealed lead acid battery (comparative product) similar to the present invention except that the electrode plate group 1 is not fixed by resin 10. It was subjected to a vibration test and examined for the presence of a short circuit. As a result, in the product of the present invention, a short circuit did not occur even when vibration of gravity acceleration of 10 G and frequency of 60 Hz was applied for 20 hours, but in the comparative product, short circuit occurred when vibration of gravity acceleration of 5 G and vibration of frequency 60 Hz was applied for 2 hours. .

[0010]

[Effect of device]

 As described above, according to the present invention, since one end of the horizontally laminated electrode plates 2 and 3 and the separator 4 is fixed to the battery case 7 with the resin 10, the electrode plate group 1 has a separator 4 at the bottom thereof. The load of the plate group 1 is not applied and the separator 4 is not damaged. Further, since the stratification phenomenon of the electrolytic solution can be suppressed, it is possible to provide a sealed lead-acid battery having a long life and excellent vibration resistance.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of the present invention.

FIG. 3 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 1 electrode plate group 2 positive electrode plate 3 negative electrode plate 4 separator 5, 6 strap 7 battery case 10 resin h height of working surface of electrode plate W width of electrode plate group

Claims (1)

[Scope of utility model registration request] 1. A sealed lead acid battery having an electrode plate group (1) and a battery case (7), wherein the electrode plate group (1) comprises a positive electrode plate (2) and a separator (4).
And the negative electrode plate (3) are laminated in a horizontal direction, the ears (2a or 3a) of the polar plates having the same polarity are connected by the straps (5 or 6), and the width (W) is the polar plate (2). 3)
Is shorter than the height (h) of the working surface of the battery, and the battery case (7) is fixed by a resin (10) on the opposite side of the electrode plate group (1) and the straps (5, 6). A sealed lead-acid battery characterized in that