JPH09147842A - Clad type positive electrode plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clad type positive electrode plate whose current collecting property is improved by respectively connecting upper parts and lower parts of respective core metals arranged in respective clad tubes to each other by continuous seats, and connecting the upper and lower continuous seats to each other by conductive columns. SOLUTION: Core metals 3 are respectively arranged in the center in respective clad tubes 2 in which an active material is filled. Upper parts of the respective core metals 3 are connected to each other by an upper continuous seat 4, and lower parts of the respective core metals 3 are connected to each other by a lower continuous seat 5. A plate lug 6 is arranged in an end part of the upper continuous seat 4. The upper continuous seat 4 and the lower continuous seat 5 are connected to each other by conductive columns 8 on both sides of a clad tube group 7 where the respective clad tubes 2 are juxtaposed. A surface of the lower continuous seat 5 is insulated by an insulating material, and insulating covering is arranged on surfaces of the columns 8. Therefore, high voltage of the lower parts of the respective core metals 3 positioned on the periphery of the concentration of electrolyte having high specific gravity is collected by the lower continuous seat 5, and this can be transmitted to the upper continuous seat 4 by the conductive columns 8. Therefore, current collecting performance can be improved.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a clad type anode plate.

[0002]

2. Description of the Related Art Heretofore, as a method of improving the current collecting ability of an electrode plate of a lead-acid battery, in the case of a paste type electrode plate, the outer bone of the electrode plate grid is made thicker than the inner bone to thereby increase the conductor resistance of the outer bone. Was made smaller to improve the current collecting property.

[0003]

However, such a method of making the outer bone of the electrode plate grid thicker than the inner bone is only applicable to the paste type electrode plate and cannot be applied to the clad type anode plate. There was a point. That is, if the shape of the core metal itself is changed in the clad type anode plate, the amount of the active material to be filled changes, which may adversely affect the performance such as storage battery capacity and life.

Further, in the clad-type anode plate, because of its structure, the connecting portion of each core is only the upper bearing, it is difficult to improve the current collecting property of each core as a whole.

An object of the present invention is to provide a clad type anode plate which can improve current collecting property.

[0006]

According to the present invention, a mandrel is arranged at the center of each clad tube filled with an active material, the upper part of each mandrel is connected by an upper bearing, and the upper ear is attached to a pole plate ear. The target of the improvement is a clad type anode plate having a structure provided with.

In the clad type anode plate according to the present invention, the upper part of each mandrel is connected by the upper bearing, the lower part of each mandrel is connected by the lower bearing, and the upper bearing and the lower bearing are electrically conductive. It is characterized in that they are connected by columns.

In this case, the columns are preferably provided on both sides of the clad tube group in which the clad tubes are lined up.

When the lower bearing is provided in this way and the lower bearing and the upper bearing are connected by the conductive support, the high voltage of the lower portion of each cored bar located around the electrolytic solution concentration of high specific gravity for stratification. The current can be collected by the lower bearing, and this can be transmitted to the upper bearing by the conductive posts, improving the current collecting performance, stably supplying power to the load for a long time, and improving the discharging performance. .

In particular, by providing columns on both sides of the clad tube group, it is possible to more efficiently transfer the collected power from the lower part of the electrode plate to the upper part of the electrode plate.

[0011]

1 and 2 show an example of an embodiment of a clad type anode plate according to the present invention.

In the clad type anode plate of this example, the core metal 3 is placed at the center of each clad tube 2 filled with the active material 1.
Are arranged respectively, the upper part of each mandrel 3 is connected by an upper connecting plate 4, the lower part of each mandrel 3 is connected by a lower connecting plate 5, and an electrode plate ear 6 is provided at the end of the upper connecting plate 4. On both sides of the clad tube group 7 in which the clad tubes 2 are arranged, the upper communicating part 4 and the lower communicating part 5 are connected to each other by conductive columns 8. The surface of the lower communication plate 5 is insulated with an insulating material, and the surface of the column 8 is provided with an insulating coating 9.

Next, an example of a method of manufacturing such a clad type anode plate will be described.

The filling of the active material 1 into each clad tube 2 of the clad type anode plate is carried out with the lower part of each clad tube 2 facing upward before mounting the lower connecting plate 5. The columns 8 are integrally formed with the upper bearing 4 and the cores 3 during casting. In this case, the surface of the pillar 8 is provided with an insulating coating 9.

After the filling of the active material 1 is completed, the upper bearing 4 and the lower bearing 5 made of the same material as each mandrel 3 are mounted.
And the boundaries between the cores 3 and the lower bearings 5 and the columns 8 are melted and integrated.

As described above, when the lower communication plate 5 is provided on the clad type anode plate and the lower communication plate 5 and the upper communication plate 4 are connected by the conductive support 8, the concentration of the electrolyte solution having a high specific gravity is increased for stratification. The high voltage of the lower part of each mandrel 3 located at is collected by the lower bearing plate 5, and this can be transmitted to the upper bearing plate 4 by the conductive support column 8 to improve the current collecting performance and to stably load for a long time. The electric power can be supplied to the battery and the discharge performance can be improved.

[0017]

EXAMPLE As shown in FIG. 3, the specific gravity C of the upper layer electrolyte in which the standard electrolyte that influences the terminal voltage (referred to as the terminal voltage A of the conventional product) of the clad anode plate in the conventional lead acid battery is present, and the high The specific gravity D of the lower layer electrolyte in which the concentrated electrolytic solution is present has almost no difference before the capacity test, but after the capacity test is started, the difference in specific gravity increases as the discharge progresses.

As shown in FIGS. 1 and 2, the terminal voltage of the clad-type anode plate of the present invention in which the upper and lower communicating points 4 and 5 are connected by the conductive columns 8 (the present invention terminal voltage B and 3) by equalizing the potential difference between the upper-layer electrolyte specific gravity C and the lower-layer electrolyte specific gravity D, which is the basis of the difference in specific gravity, as shown in FIG. Can be improved.

The column 8 may be provided on one side of the clad tube group 7 in some cases.

[0020]

In the clad anode plate according to the present invention, the upper and lower parts of each mandrel are connected by the upper bearing and the lower bearing, and the upper bearing and the lower bearing are connected by conductive columns. Because of the stratification, the high voltage of the lower part of each mandrel located around the high-concentration electrolyte concentration can be collected by the lower bearing, and this can be transmitted to the upper bearing by the conductive support, thus collecting current. Can be improved. In this way, if the high voltage at the bottom of each core can be collected by the lower spacer, the terminal voltage will be higher than that of the conventional product, so that even if the ambient temperature is slightly adverse, it will be stable for a longer time than the conventional product. Electric power can be supplied to the load, and the discharge performance can be improved.

In particular, if columns are provided on both sides of the clad tube group, the power collected from the lower part of the electrode plate can be more efficiently transmitted to the upper part of the electrode plate.

[Brief description of the drawings]

FIG. 1 is a front view of an example of an embodiment of a clad anode plate according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a comparison diagram of a product of the present invention and a conventional product in a capacity test using a clad type anode plate.

[Explanation of symbols]

 1 Active Material 2 Clad Tube 3 Mandrel 4 Upper Series 5 Lower Series 6 Electrode Ear 7 Cladding Tube Group 8 Support 9 Insulation Coating

Claims (2)

[Claims] 1. A clad in which cores are respectively arranged in the centers of clad tubes filled with an active material, the tops of the cores are connected by upper bearings, and electrode ears are provided on the upper bearings. A clad-type anode plate, wherein the lower part of each of the cores is connected by a lower seat, and the upper seat and the lower seat are connected by a conductive column. 2. The clad anode plate according to claim 1, wherein the support columns are provided on both sides of a clad tube group in which the clad tubes are arranged side by side.