JP2001266897A - Continuous casting grid for lead-acid battery and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a continuous casting grid for a lead-acid battery having a large active material paste holding power. SOLUTION: In a space surrounded with a frame bone, an inner bone 3 is integrally equipped with the frame bone. A part or the whole is made as a twisted structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous cast lattice for a lead storage battery formed by continuous casting and a method for producing the same.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional continuous cast lattice body 1 for a lead-acid battery has an internal bone 3 in a lattice shape in a space surrounded by a rectangular frame bone 2 as shown in FIG. It has a structure provided integrally. Each inner bone 3 needs to have a large withdrawal taper in order to smoothly release the mold after molding, and has a triangular cross section as shown in FIG. 3 or a trapezoidal cross section. An ear 4 is provided integrally with a part of the frame bone 2.

[0003]

However, the internal bone 3
Is a triangular cross section or trapezoidal cross section as shown in the illustration,
As shown in FIG. 4, when the active material paste 5 is applied to form an electrode plate, there is a problem that the active material paste 5 easily falls off from the inner bone 3.

[0004] It is an object of the present invention to provide a continuous cast lattice for a lead-acid battery having a large holding power for an active material paste and a method for producing the same.

[0005]

SUMMARY OF THE INVENTION The present invention is to improve a continuous cast lattice for a lead-acid battery in which an inner bone is provided in a lattice shape in a space surrounded by a frame bone. . In this case, the inner bone is usually formed in a triangular or trapezoidal cross section for easy release.

In the continuous cast lattice body for a lead storage battery according to the present invention, a part or all of the inner bone has a twisted structure, or a part or all of the inner bone is twisted with respect to a state at the time of casting. It has a structure. In this case, the twist range of the inner bone is preferably in the range of 10 ° to 100 ° with respect to the state at the time of casting.

When the inner bone has a twisted structure as described above, each ridge line of the inner bone is twisted. Therefore, when the active material paste is applied, each twisted ridge line becomes a resistance and the active material paste falls off. And the inner bone has a greater holding power of the active material paste.

Further, the present invention is to improve a manufacturing method for manufacturing a continuous cast lattice body for a lead storage battery in which an inner bone is provided integrally with the frame bone in a space surrounded by the frame bone. It is.

In the method for manufacturing a continuous cast grid for a lead-acid battery according to the present invention, after casting the continuous cast grid for a lead-acid battery, a part or all of the inner bone is twisted to have a twisted structure. I do.

[0010] In such a manufacturing method, the lattice body is manufactured by casting in the same manner as in the past. Therefore, mold release after casting is easy, and it is possible to manufacture efficiently. next,
A part or all of the inner bone of the manufactured lattice is twisted into a twisted structure. This torsion work can be easily performed by supporting each intersection of the inner bone on the lower side and pressing the mold from above.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a cross-sectional view showing an example of an electrode plate using a continuous cast lattice for a lead storage battery according to the present invention.

The continuous cast lattice body 1 for a lead-acid battery of this embodiment has the same overall shape as that of FIG. In particular, in the continuous cast lattice body 1 for a lead-acid battery of this example, a part or all of the inner bone 3 having a triangular cross section is twisted as shown in the drawing or twisted with respect to the state at the time of casting. I have. The twist range of the inner bone 3 is preferably in the range of 10 ° to 100 °.

As described above, the inner bone 3 is formed by the conventional FIG.
In contrast to the structure at the time of casting shown in FIG. 1, when the twisted structure is twisted as shown in FIG. 1, each ridge line of the inner bone 3 is twisted, and when the active material paste 5 is applied as shown in FIG. Each twisted ridge serves as a resistance, making it difficult for the active material paste 5 to fall off, and increasing the holding power of the inner bone 3 for the active material paste 5.

Next, the continuous casting grid body 1 for a lead-acid battery of the present embodiment
A method of manufacturing the device will be described. In this example, the continuous casting grid body 1 for a lead-acid battery is cast by the same casting method as a normal method. Thereafter, each intersection 6 of the inner bone 3 is supported on the lower side, and a part or all of the inner bone 3 is twisted by a die press or the like from the upper side to form a twisted structure.

In such a manufacturing method, the casting of the continuous casting grid body 1 for a lead storage battery is the same as the conventional one, the mold release after the casting is easy, and the manufacturing can be performed efficiently. next,
When part or all of the inner bone 3 is twisted by a mold press or the like,
Each ridge of the inner bone 3 having a triangular cross section can be easily formed in a twisted structure.

In the above example, the case where the inner bone 3 has a triangular cross section has been described, but the inner bone 3 may have a trapezoidal cross section or the like.

[0017]

In the continuous cast lattice for a lead-acid battery according to the present invention, a part or all of the inner bone has a twisted structure, or a part or all of the inner bone is in a state of being cast. Due to the twisted twist structure, each ridge of the inner bone is twisted, and when applying the active material paste, each twisted ridge becomes a resistance and the active material paste becomes difficult to fall off, and the active material of the inner bone The paste holding power can be increased. The twist range of the inner bone is preferably in the range of 10 ° to 100 °.

In the method for manufacturing a continuous cast grid for a lead-acid battery according to the present invention, since the grid is manufactured by casting in the same manner as in the prior art, the mold release after casting is easy and the manufacturing is efficient. Can be. Next, since a part or all of the inner bone of the manufactured lattice body is twisted into a twisted structure, a part or all of the inner bone can be easily twisted.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of an electrode plate using a continuous casting grid body for a lead storage battery according to the present invention.

FIG. 2 is a front view of a conventional continuous cast grid for a lead storage battery.

FIG. 3 is an enlarged sectional view taken along line AA of FIG.

FIG. 4 is a cross-sectional view showing an example of an electrode plate using a conventional continuous grid for lead-acid batteries.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 continuous cast lattice for lead-acid battery 2 frame bone 3 inner bone 4 ears 5 active material paste

Claims (5)

[Claims] 1. A continuous cast lattice body for a lead-acid battery in which inner bones are integrally provided with the frame bones in a space surrounded by the frame bones, wherein a part or all of the inner bones has a twisted structure. A continuous cast grid for lead-acid batteries. 2. A continuous cast lattice body for a lead-acid battery in which inner bones are integrally provided with the frame bones in a space surrounded by the frame bones, wherein part or all of the inner bones are formed at the time of casting. A continuous cast lattice for lead-acid batteries that has a twisted structure that is twisted with respect to the state. 3. A continuous cast lattice for a lead-acid battery, wherein a triangular or trapezoidal inner bone is provided integrally with the frame bone in a space surrounded by the frame bone, wherein a part of the inner bone or A continuous casting grid for a lead-acid battery, wherein the grid has a twisted structure entirely twisted within a range of 10 ° to 100 °. 4. A continuous cast lattice for a lead-acid battery in which a triangular or trapezoidal inner bone is provided in a lattice shape integrally with the frame bone in a space surrounded by the frame bone, All are 10% of the state at the time of casting
A continuous casting grid for lead-acid batteries having a twisted structure twisted in the range of ° to 100 °. 5. A method for manufacturing a continuous casting grid body for a lead-acid battery, in which inner bones are provided integrally with the frame bone in a lattice shape in a space surrounded by the frame bone, wherein the continuous casting for a lead-acid battery is performed. A method of manufacturing a continuous cast grid for a lead-acid battery, in which a part or all of the inner bone is twisted into a twisted structure after the grid is cast.