JP3314597B2 - Clad anode plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a method of improving the current collecting performance 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, so that the conductor resistance of the outer bone is increased. Was reduced to improve current collection.

[0003]

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

Further, in the clad anode plate, since the connection portion of each mandrel is only the upper joint, due to its structure, it has been difficult to improve the current collecting properties of each mandrel as a whole.

An object of the present invention is to provide a clad type anode plate capable of improving current collecting performance.

[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 constellation, and an electrode plate is connected to the upper constellation. The improvement is directed to a clad anode plate having a structure provided with.

In the clad anode plate according to the present invention, the upper part of each mandrel is connected by an upper joint, the lower part of each mandrel is connected by a lower joint, and a conductive material is provided between the upper and lower joints. It is characterized by being connected by a support.

In this case, it is preferable that the columns are provided on both sides of the clad tube group in which the clad tubes are arranged.

When the lower seat is provided and the lower seat and the upper seat are connected by a conductive pillar as described above, a high voltage is applied to the lower part of each mandrel located in the vicinity of the electrolyte solution having a high specific gravity for stratification. Current can be collected in the lower constellation, and this can be transmitted to the upper constellation with conductive pillars, improving the current collection performance, stably supplying power to the load for a long time, and improving the discharge performance. .

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.

[0011]

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

In the clad anode plate of this embodiment, a core metal 3 is placed at the center of each clad tube 2 filled with the active material 1.
Are arranged, an upper part of each mandrel 3 is connected by an upper joint 4, a lower part of each mandrel 3 is connected by a lower joint 5, and an end of the upper joint 4 is provided with an electrode plate ear 6. On both sides of the clad tube group 7 in which the clad tubes 2 are arranged, the upper joints 4 and the lower joints 5 are connected by conductive columns 8. The surface of the lower joint 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 for manufacturing such a clad anode plate will be described.

The filling of the active material 1 into each clad tube 2 of the clad anode plate is performed with the lower part of each clad tube 2 facing upward before the lower joint 5 is mounted. The support 8 is formed integrally with the upper joint 4 and the mandrel 3 at the time of casting. In this case, an insulating coating 9 is applied to the surface of the column 8.

After the filling of the active material 1 is completed, the upper joint 4 and the lower joint 5 made of the same material as the mandrel 3 are mounted.
And the boundary between the mandrel 3 and the boundary between the lower joint 5 and each column 8 are melted and integrated.

As described above, when the lower joint 5 is provided on the clad anode plate, and the lower joint 5 and the upper joint 4 are connected by the conductive support 8, a layer having a high specific gravity around the electrolyte solution for stratification is formed. The high voltage at the lower part of each mandrel 3 is collected by the lower joint 5 and can be transmitted to the upper joint 4 by the conductive support 8, so that the current collecting performance is improved and the load is stably maintained for a long time. Power can be supplied to the battery, and the discharge performance can be improved.

[0017]

As shown in FIG. 3, the specific gravity C of the upper electrolytic solution in which a standard electrolytic solution which affects the terminal voltage of the clad type anode plate in the conventional lead-acid battery (referred to as the terminal voltage A of the conventional product) is high. The specific gravity D of the lower layer electrolyte in which the concentration electrolyte exists is almost the same before the capacity test, but after the capacity test is started, the specific gravity difference increases as the discharge proceeds.

As shown in FIGS. 1 and 2, the terminal voltage of the clad anode plate of the present invention (the terminal voltage B of the present invention) which is connected between the upper joint 4 and the lower joint 5 by a conductive column 8 is shown. ) Is increased as shown in FIG. 3 by equalizing the potential difference between the upper electrolyte specific gravity C and the lower electrolyte specific gravity D, which are the basis of the specific gravity difference, that is, the current collecting property is increased and the discharge capacity is reduced. 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 portions of each mandrel are connected by an upper constellation and a lower constellation, and the upper and lower constellations are connected by conductive columns. Therefore, the high voltage at the lower part of each mandrel located around the electrolyte concentration of high specific gravity for stratification can be collected in the lower constellation, and this can be transmitted to the upper constellation by the conductive pillar, and the current collection performance Can be improved. If the high voltage at the lower part of each mandrel can be collected in the lower joint as described above, the terminal voltage will be higher than that of the conventional product. 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 anode plate.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 active material 2 clad tube 3 cored bar 4 upper joint 5 lower joint 6 electrode lug 7 clad tube group 8 support 9 insulating coating

Claims (2)

(57) [Claims] 1. A clad in which a mandrel is arranged at the center of each clad tube filled with an active material, an upper part of each mandrel is connected by an upper joint, and an electrode lug is provided in the upper joint. A clad-type anode plate, wherein a lower portion of each of the mandrels is connected by a lower joint and a conductive pillar is connected between the upper joint and the lower joint. 2. The clad anode plate according to claim 1, wherein the support pillars are provided on both sides of a clad tube group in which the clad tubes are arranged.