JP2003036852A - Continuous casting lattice component for lead storage battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous casting lattice component for a lead storage battery by which elongation and an increase in weight of the lattice component can be restrained. SOLUTION: The lattice component has a frame rib around the circumference, and the inside of the frame rib includes an inner rib 2 wherein a longitudinal rib and oblique ribs 2b, 2c intersect. Thickness of a part 3 where the oblique ribs 2b, 2c intersect at the longitudinal rib 2a is thicker than that of middle parts 2b', 2c' between the intersection parts 3, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuously cast lattice for a lead storage battery.

[0002]

2. Description of the Related Art When a lead storage battery is used for a long period of time, the lattice body expands to come into contact with the counter electrode and cause a short circuit. Therefore, Japanese Patent Application No. 6-143
It has been proposed that the inner bone is made thicker to the extent of the frame bone around the cast lattice body as described in No. 861 so as to have strength and suppress elongation.

[0003]

However, in the continuously cast latticed body having such a structure, the inner bone is thick, and therefore, there is a problem that the weight increases.

It is an object of the present invention to provide a continuously cast lattice for a lead storage battery which can suppress the elongation and weight increase of the lattice.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a continuously cast grid for a lead-acid battery, which has a frame bone in the periphery thereof and an inner bone surrounded by the frame bone and having internal bones in which longitudinal bones and oblique bones intersect. set to target.

In the continuously cast grid for lead-acid battery according to the present invention, the thickness of the oblique bone between the intersecting portions is smaller than the thickness at the intersecting portion side with the longitudinal bone.

As described above, when the thickness of the oblique bone is made thinner than the thickness on the side of the intersection with the longitudinal bone, only the thin portion of the oblique bone disappears as corrosion progresses. By stagnating further corrosion, the elongation of the lattice can be suppressed. Moreover, since the thickness of the oblique bone between the intersecting portions is made smaller than the thickness on the side of the intersecting portion with the vertical bone, it is possible to suppress the increase in the weight of the lattice body.

Further, according to the present invention, a frame bone is constituted by two horizontal frame bones and two vertical frame bones in the periphery, and an inner bone is surrounded by the frame bones to have one horizontal frame bone. It is intended for a continuously cast grid for lead-acid battery in which the ears are erected close to one of the vertical frame bones.

In the continuously cast grid for lead-acid battery according to the present invention, the thickness of one vertical frame bone on the ear side is larger than that of the other vertical frame bone.

When the thickness of one of the vertical frame bones on the ear side is larger than that of the other vertical frame bone in this manner, the strap is provided via the ear portions, which is opposite to the side on which the extension of the lattice is suppressed. The extension of the lattice on the side can be suppressed by the thick vertical frame bone. Further, since it suffices to increase the thickness of the other vertical frame bone on the side opposite to the one vertical frame bone where the ears are present, the weight increase of the lattice can be suppressed to a minimum.

Further, according to the present invention, there are two lateral frame bones and two perimeters.
A frame bone is composed of two vertical frame bones, and an internal bone in which the vertical bones and the oblique bones intersect is surrounded by the frame bones, and one horizontal frame bone has an ear portion on one vertical frame bone. The subject is a continuous cast grid for lead-acid batteries that are erected close to each other.

In the continuously cast lattice for lead-acid battery according to the present invention, the oblique bone has a smaller thickness between the crossing portions than the crossing portion with the vertical bone, and one of the ear portion side is smaller. The thickness of the other vertical frame is thicker than that of the vertical frame.

When the thickness of the oblique bone is made thinner than the thickness on the side of the intersection with the longitudinal bone in this way, only the thin portion of the oblique bone disappears as corrosion progresses, The elongation of the lattice can be suppressed by stagnating further corrosion. Further, if the thickness of the other vertical frame bone is thicker than that of one vertical frame bone close to the ear part, the lattice body on the side opposite to the side where the strap is provided via the ear portion and the extension of the lattice body is suppressed Can be suppressed by a thick vertical frame bone. further,
The thickness of the oblique bone between the intersections is thinner than the thickness on the side of the intersection with the vertical bone, and the thickness of the other vertical frame bone on the side opposite to the vertical frame bone where the ears are present is thicker. Since it is only necessary to increase the weight, it is possible to suppress an increase in the weight of the lattice.

[0014]

1 and 2 show a first example of an embodiment of a continuous casting grid for a lead storage battery according to the present invention. FIG. 1 shows a continuous casting grid for a lead storage battery according to the present invention. FIG. 2 is a front view of the body, and FIG. 2 is a perspective view showing the shape of the oblique bone between the intersections with the vertical bones.

In the continuously cast grid for lead-acid battery of this example, the frame bone 1 is composed of two horizontal frame bones 1a and 1b and two vertical frame bones 1c and 1d and is surrounded by the frame bones 1. The inner side has a structure having an inner bone 2 in which a thin vertical bone 2a and thin slanted bones 2b and 2c intersect. The oblique bones 2b and 2c are provided so as to intersect with each other. Such oblique bones 2b and 2c are
The thickness of the intermediate portions 2b 'and 2c' between the intersections 3 and 3 is smaller than the thickness on the side of the intersection 3 with the vertical bone 2a. The slanted bones 2b and 2c are tapered in thickness toward the intermediate portions 2b 'and 2c'. The ear portion 4 is erected on one of the horizontal frame bones 1a existing on the upper side so as to approach the one vertical frame bone 1c.

In this way, the oblique bones 2b and 2c are replaced by the vertical bones 2a.
From the thickness on the side of the intersection 3 with the intermediate portion 2b between the intersections 3 and 3
If the thickness of ′, 2c ′ is made thinner, only the middle portions 2b ′, 2c ′ with a smaller thickness disappear as the corrosion progresses, and the corrosion of any further is stagnated, thereby extending the lattice Can be suppressed. In addition, the thickness of the intersection 3 with the vertical bone 2a allows the middle portion 2b 'of the oblique bones 2b and 2c between the intersections 3 and 3 to be
Since the thickness of 2c 'is made thin, an increase in the weight of the lattice can be suppressed.

FIG. 3 is a front view showing a second example of the embodiment of the continuously cast grid for lead-acid battery according to the present invention.

In the continuously cast grid for lead-acid battery of this example, the frame bone 1 is composed of two horizontal frame bones 1a and 1b and two vertical frame bones 1c and 1d, and is surrounded by the frame bones 1. The inner side has a structure having an inner bone 2 in which a thin vertical bone 2a and thin slanted bones 2b and 2c intersect. The ear portion 4 is erected on one of the horizontal frame bones 1a existing on the upper side so as to approach the one vertical frame bone 1c. Particularly in this example, the thickness of the other vertical frame bone 1d on the opposite side is thicker than the thickness of one vertical frame bone 1c near the ear 4.

In this way, one longitudinal frame bone 1c close to the ear 4
When the thickness of the other vertical frame bone 1d is made thicker, the vertical frame is thicker than the side where the strap is provided through the ear 4 and the expansion of the lattice is suppressed, though not shown. It can be suppressed by the bone 1d. Further, since it suffices to increase the thickness of the other vertical frame bone 1d on the side opposite to the one vertical frame bone 1c where the ears 4 are present, the increase in the weight of the lattice can be suppressed to a minimum. .

In the second example, the internal bone 2 may be formed of a vertical bone and a horizontal bone.

FIGS. 4 and 5 show a third example of the embodiment of the continuously cast grid for lead-acid battery according to the present invention, and FIG. 4 is a front view of the continuously cast grid for lead-acid battery of this example. FIG. 5 is a perspective view showing the shape of the oblique bone between the intersections with the vertical bone.

The continuously cast grid for lead-acid battery of this example is shown in FIG.
The first example of the embodiment shown in FIG. 2 and the second example of the embodiment shown in FIG. 3 are combined together.
That is, there are two horizontal frame bones 1a and 1b and two vertical frame bones 1 in the periphery.
A frame 1 is composed of c and 1d, and the inside surrounded by the frame 1 has a structure having an internal bone 2 in which a longitudinal bone 2a and oblique bones 2b and 2c intersect. The oblique bones 2b and 2c are provided so as to intersect with each other. Such oblique bones 2b, 2c
Of the intermediate portions 2b 'and 2c' between the intersections 3 and 3 are thinner than the thickness on the side of the intersection 3 with the vertical bone 2a.
The slanted bones 2b and 2c are tapered in thickness toward the intermediate portions 2b 'and 2c'. The ear portion 4 is erected on one of the horizontal frame bones 1a existing on the upper side so as to approach the one vertical frame bone 1c. One vertical frame bone 1c close to the ear 4
On the other hand, the thickness of the other vertical frame bone 1d on the opposite side is thicker.

In this way, the oblique bones 2b and 2c are replaced by the vertical bones 2a.
From the thickness on the side of the intersection 3 with the intermediate portion 2b between the intersections 3 and 3
If the thickness of ′, 2c ′ is made thinner, only the middle portions 2b ′, 2c ′ with a smaller thickness disappear as the corrosion progresses, and the corrosion of any further is stagnated, thereby extending the lattice Can be suppressed. Also, one of the vertical frame bones 1 near the ears 4
If the thickness of the other vertical frame bone 1d is made thicker than that of c, the extension of the lattice body on the side opposite to the side on which the strap is provided to suppress the extension of the lattice body through the ear 4 is made thicker. It can be suppressed by the frame bone 1d. Further, from the thickness on the side of the intersection 3 with the vertical bone 2a, the oblique bones 2b and 2c between the intersections 3 and 3 are formed.
Of the vertical frame bone 1c on the opposite side of the vertical frame bone 1c on which one of the intermediate frames 2b 'and 2c' is thin and the ear 4 is present.
Since it suffices to increase the thickness of d, it is possible to suppress an increase in the weight of the lattice.

[0024]

EXAMPLE A continuously cast lattice for a lead storage battery having the structure shown in FIGS. 1 and 2 was used as a lattice of a positive electrode. A paste obtained by kneading lead powder, dilute sulfuric acid, and water was filled in this continuously cast lattice, aged, and dried to prepare a positive electrode plate. This positive electrode plate and the negative electrode plate inserted in the separator were combined and placed in a battery case, a sulfuric acid solution having a specific gravity of 1.225 was injected into the battery container, and initial charging was performed to prepare a lead storage battery A.

A continuously cast grid for lead-acid battery having the structure shown in FIG. 3 is used as a grid for a positive electrode, and the continuous cast grid is filled with the same paste, aged and dried to form a positive electrode plate.
This positive electrode plate and the negative electrode plate inserted in the separator were combined and placed in a battery case, a sulfuric acid solution having a specific gravity of 1.225 was poured into the battery container, and initial charging was performed to prepare a lead storage battery B.

As shown in FIGS. 4 and 5, the inner bone surrounded by the frame bone is made to intersect the longitudinal bone and the oblique bone, and the thickness of the intermediate portion between the intersections of the oblique bone and the vertical bone is made thin. And, the continuous casting grid body in which the vertical bone on the side opposite to the ear is thicker than the other vertical bone is used for the positive grid, and the continuous casting grid body is filled with the same paste, aged and dried. A positive electrode plate was prepared, and this positive electrode plate and the negative electrode plate inserted in the separator were combined and placed in a battery case, a sulfuric acid solution having a specific gravity of 1.225 was injected into the battery container, and initial charging was performed to prepare a lead storage battery C. .

As a comparative example, a continuously cast lattice body having the same thickness as the portion crossing the longitudinal bone and the thickness of the surrounding frame bones being constant was used for the positive electrode lattice body, This continuous casting grid is filled with the same paste, aged and dried to form a positive electrode plate, and the positive electrode plate and the negative electrode plate inserted in the separator are combined and placed in a battery case, and a sulfuric acid solution with a specific gravity of 1.225 is added to the battery. A lead storage battery D was prepared by injecting it into a battery case and performing initial charging.

The lead acid batteries A to D prepared in this way are
Evaluation was carried out by a JIS overcharge test at 75 ° C., elongation of the lattice body after the life test was compared, and the results of elongation of the lattice body are shown in FIG. Comparing the lead storage batteries A, B, and C with the lead storage battery D, the lead storage battery D has a growth rate of about 3%, while the lead storage batteries A and B have a growth rate of about 2%, and the lead storage battery C has a growth rate of 2% or less. It was reduced.

[0029]

In the continuously cast lattice for lead-acid battery according to the present invention, since the internal oblique bone has a smaller thickness between the intersecting portions than the thickness at the intersecting portion side with the longitudinal bone, corrosion progresses. As a result, only the thin portion disappears and further corrosion is stagnated, so that the elongation of the lattice can be suppressed. Moreover, since the thickness of the oblique bone between the intersecting portions is made smaller than the thickness on the side of the intersecting portion with the vertical bone, it is possible to suppress the increase in the weight of the lattice body.

Further, in the continuously cast grid for lead-acid battery according to the present invention, since the thickness of the other vertical frame bone is larger than that of the vertical frame bone provided with the ear portions, the strap can be attached via the ear portions. It is possible to suppress the extension of the lattice body on the side opposite to the side where the extension of the lattice body is suppressed by the thick vertical frame bone. Further, since it suffices to increase the thickness of the other vertical frame bone on the side opposite to the one vertical frame bone where the ears are present, the weight increase of the lattice can be suppressed to a minimum.

Further, in the continuously cast grid for lead-acid battery according to the present invention, since the slanted bone of the inner bone is thinner in the thickness between the crossing portions than in the crossing portion side with the vertical bone, corrosion progresses. As a result, only the thin portion disappears and further corrosion is stagnated, so that the elongation of the lattice can be suppressed. In addition, since the thickness of the other vertical frame bone is thicker than that of the vertical frame bone on which the ear part is provided, it is opposite to the side where the strap is provided via the ear part and the extension of the lattice is suppressed. The extension of the lattice on the side can be suppressed by the thick vertical frame bone. Further, the thickness of the oblique bone between the intersections is made thinner than the thickness on the side of the intersection with the vertical bone, and the thickness of the other vertical frame bone on the side opposite to the one vertical frame bone where the ears are present is set to be smaller. Since it only needs to be thick, the increase in the weight of the lattice can be suppressed to a minimum.

[Brief description of drawings]

FIG. 1 is a front view showing a first example of an embodiment of a continuously cast grid body for a lead storage battery according to the present invention.

FIG. 2 is a perspective view showing a shape of an oblique bone between intersections with a vertical bone in the first example.

FIG. 3 is a front view showing a second example of the embodiment of the continuously cast lattice for a lead storage battery according to the present invention.

FIG. 4 is a front view showing a third example of the embodiment of the continuously cast grid body for a lead storage battery according to the present invention.

FIG. 5 is a perspective view showing a shape of an oblique bone between intersections with a vertical bone in a third example.

FIG. 6 is a comparison diagram of the elongations of the lead storage batteries A to C using the continuously cast grids for lead storage batteries of the first example, the second example, and the third example according to the present invention, and the lead storage batteries D of the comparative example. Is.

[Explanation of symbols]

1 frame bone 1a, 1b Horizontal frame bone 1c, 1d Vertical frame bone 2 inner bones 2a Vertical bone 2b, 2c oblique bone 2b ', 2c' middle part 3 intersections 4 ears

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuya Sasaki             2-8-7 Nihonbashihonmachi, Chuo-ku, Tokyo             Inside Shin-Kobe Electric Machinery Co., Ltd. F-term (reference) 5H017 AA01 CC05 CC07 HH03

Claims (3)

[Claims] 1. A continuous casting grid for a lead storage battery, which has a frame bone in the periphery, and an inner side surrounded by the frame bone has an internal bone in which a longitudinal bone and an oblique bone intersect, the oblique bone being the A continuous casting grid for a lead storage battery, in which the thickness between the intersections is smaller than the thickness at the intersection with the vertical bone. 2. A frame bone is composed of two horizontal frame bones and two vertical frame bones in the periphery, and an internal bone is surrounded inside by the frame bones,
A lead-acid battery continuous casting lattice body in which an ear portion is erected close to one of the vertical frame bones on one of the horizontal frame bones, and the other is more than the one vertical frame bone on the ear side. 2. A continuous casting lattice for a lead storage battery, wherein the vertical frame bone is thicker. 3. A frame bone is composed of two horizontal frame bones and two vertical frame bones on the periphery, and an internal bone formed by intersecting the vertical bones and the oblique bones is provided inside the frame bones. A continuous casting lattice for lead-acid batteries, wherein the ears on one of the horizontal frame bones are erected close to one of the vertical frame bones, wherein the oblique bone is larger than the thickness on the side of the intersection with the vertical bone. A continuous casting grid for a lead-acid battery, wherein the thickness between the intersecting portions is thinner, and the vertical frame bone on the ear side is thicker than the vertical frame bone on the other side.