JPS5868872A - Manufacture of substrate for expansion-type storage battery - Google Patents

Abstract

PURPOSE:To reduce falling-off of the filled activating substance and to obtain the substrate for an expansion-type storage battery which has an increased height and in which the filling amount of activating substance can be increased. CONSTITUTION:The large V-shaped slit part 3a which is set in the interval 2 between the slits 3 and 3 of the contiguous slit line is formed in the middle part of each slit 3. When the elementary plate 1 having such slits 3 in zigzag form is pulled in the direction of width and each slit 3 is exapanded, a band-shaped substrate A for expansion-type storage battery is obtained where said substrate A is equipped with the protrusion 6 which protrudes outwardly from the base surface of the elementary plate and has a height h and the V-shaped inner surface 6a, at one corner part of the rhombic through window 5, namely at each cross point of lattice crosspieces 4 and equipped with a groove 7 having the V-shaped inner surface 7a at the other corner part opposite to the corner part described the above. Therefore, when the substrate A is filled with the activating substance in paste form, the contact area with the filled activating substance increases in comparison with the conventional rhombic through window 5 having a simple form, at the V-shaped inner surface 6a of the V-shaped protrusion 6 at one corner of each rhombic and at the through window 5 V-shaped inner surface 7a of the V-shaped groove 7 at the other corner, the close holding performance of the activating substance is increased to that extent, and falling-off can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The conventional substrate for an expanded storage battery has a structure including a large number of simple diamond-shaped active material filling product windows surrounded by a large number of linear intersecting lattice bars. The active material filled in the transparent window tends to easily fall off during the electrode plate manufacturing process or during use as a battery electrode plate.

The present invention provides a method for manufacturing a substrate for an expanded storage battery, which can improve the above drawbacks, reduce falling-off of the filled active material, and increase the filling amount of the active material due to the increased height of the substrate. Then, a large number of rows of slits lined up at regular intervals in the length direction are arranged in a staggered manner in the width direction on a long and wide base plate for a storage battery board, and then this is done. In the method of manufacturing an expanded storage battery substrate, each slit is expanded by pulling the base plate in the width direction to form a diamond-shaped transparent window for filling the active material and lattice bars that intersect diagonally with each other. is formed to have a large V-shaped slit in the middle facing within the interval between the adjacent slit rows, and then the blank plate is pulled in its width direction to widen each slit, forming a diamond-shaped corner. A large number of transparent windows are provided with a protruding novel having a height protruding outward from the W board base surface at the corner and a V-shaped inner surface, and a 111-stitch H having a V-shaped inner surface at the opposite corner. It is characterized by forming.

Next, an explanation will be given with reference to the attached drawings, which are an example of carrying out the present invention.

As shown in the first diagram, a long and wide storage battery substrate base plate (1) made of a thin lead alloy thin plate is first lined up with a distance of one centimeter (2) from each other in the length direction by making incisions. A large number of rows of slits (3) are arranged in a staggered manner in the width direction, and according to the present invention, each slit (31E) has a slit between the adjacent slit rows (31()). 31
A slit (3) was formed with a large V-shaped slit portion (6a) facing into the interval (2) between the two. The blank plate (1) having such slits (3) arranged in a staggered manner is then pulled in its width direction by a conventional method to widen each slit (3), and a large number of diagonally intersecting lattice bars (4 ) is formed in each diamond-shaped transparent window (5) for filling active material, but according to the present invention, a slit having the above-mentioned bow-shaped slit portion (6a) is formed in the base plate (1) in advance. (3), each rhombus-shaped transparent window (5) has a height h projecting outward from the base of the blank plate at its corner, or in other words, at each intersection of the lattice crosspiece (4). A belt-like extended band type as shown in the second diagram, which is equipped with a protrusion (6) having a V-shaped inner surface (6a) and a gate structure (7) having a V-shaped inner surface (7a) at the opposite corner. A storage battery substrate A is obtained. Thereafter, a substrate A having an appropriate size and shape is obtained through conventional processing steps.

Thus, when the substrate A according to the present invention is filled with a paste active material by a conventional method, one corner of each transparent window (5) is connected to the V-shaped inner surface (6a) of the V-shaped protrusion (6) and the other. In the V-shaped inner surface (7a) of the V-shaped groove (7) at the corner, the contact surface + WI with the active material filled therein is increased compared to the conventional simple diamond-shaped transparent window. Therefore, it is possible to maintain the active material in close contact with it and prevent it from falling off.
Since the height of the substrate A is increased by protruding by a height h from the height of the conventional substrate with the letter-shaped protrusions (6), the filling layer of the active material can be formed thickly according to the kneading process. An electrode plate with an increased amount of active material applied can be obtained.

As described above, according to the present invention, a large number of slits are provided in a staggered manner in a blank plate for a storage battery board, and then the blank plate is pulled in the width direction to widen the slits and form diamond-shaped transparent windows for filling the active material. In manufacturing an expanded type storage battery board, the middle part of each slit is formed into a large V-shaped slit (R1) extending within the interval between the slits of the adjacent slit row, and this Since the diamond-shaped transparent window of the board was widened, a protrusion with a V-shaped inner surface protruding outward from the base of the base plate at one corner and a concave groove with a V-shaped V surface at the opposite corner. The V-shaped protrusions and V-shaped grooves improve the retention of the filled active material compared to conventional simple diamond-shaped transparent windows, and the V-shaped grooves A good substrate can be obtained in which the amount of applied active material can be increased by the outward protrusion height of the protrusions, and effects such as being able to provide a stable and long-life electrode plate with this substrate are observed.

[Brief explanation of drawings]

The drawings show a manufacturing process diagram of one example of carrying out the present invention, and FIG. 1 is a plan view of a part of the base plate for a storage battery board, FIG. 2 is a plan view of a part of the blank in an expanded state, and FIG. shows a cross-sectional view taken along line A-A. (1)... Raw board for storage battery board (2)... Spacing
(3)...Slit (3a)...V-shaped slit part (4)...Lattice crosspiece (5)...Transparent window (6)...
・V-shaped protrusion (6a)...V-shaped inner surface h...Height 7)...V-shaped groove (7a)...V-shaped inner surface A...2 people outside the product board Figure 3-349-

Claims (1)

[Scope of Claims] 1. A large number of rows of slits arranged at regular intervals in the longitudinal direction of a blank plate for a storage battery board having a long and wide width are arranged in a staggered manner in the width direction. Next, the raw plate is stretched in the width direction and each slit is expanded to form a diamond-shaped transparent window for filling the active material and lattice bars that intersect diagonally with each other. In this process, each slit is formed to have a large V-shaped slit in the middle that faces within the interval between the adjacent slit rows, and then the blank plate is stretched by σ1 in the width direction of each slit. The diamond-shaped corner part has a protrusion that has a height that projects outward from the base plate and a V-shaped inner surface, and the opposite corner part has a concave groove that has a V-shaped inner surface. A method for manufacturing an expanded storage battery substrate characterized by forming a large number of transparent windows. 2. In an expanded storage battery board consisting of a large number of diagonally intersecting lattice bars and a large number of six diamond-shaped windows for filling active material formed in these lattice bars, each rhombus-shaped transparent window has its corner. An expanded type storage battery board comprising: a protrusion having a height and a V-shaped concave surface projecting outward from a base plate; and four parts having V-shaped inner surfaces at opposing corners.