JPH03196464A - Storage battery electrode plate and manufacture thereof - Google Patents

Abstract

PURPOSE:To effectively use a solid part and manufacture a large electrode plate with a comparative small facility by forming an electrode plate ear part and a current collecting parent bone formed continuously to the electrode ear part from the solid part. CONSTITUTION:In a storage battery electrode plate having a grid body in which the center part of a lengthy sheet 1 of a grid body material is left as it remains a solid part and the residue is expanded to form an expanded mesh part 6 and also having an electrode surface 11 constituted by coating the expanded mesh part 6 with an active material, an electrode plate ear part 10 protruding from the electrode plate surface 11 and a current collecting parent bone 12 formed continuously to the electrode plate ear part 10 in such a manner that it is successively narrowed as it is separated from the electrode plate ear part 10 are formed from the solid part. Hence, the solid part of the center part 5 of the lengthy sheet 1 can be effectively used, and a large storage battery electrode plate can be manufactured with a comparatively small facility.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage battery plate and a method for manufacturing the same.

'r and its. Methods for manufacturing the lattice bodies of paste-type electrode plates for lead-occupied batteries include casting methods and mechanical methods such as expanding and punching.

Among these, those made by casting have the disadvantage of poor productivity, and those made by punching have the disadvantage of generating a large amount of punching waste. On the other hand, expand processing does not have these drawbacks, so
In the future, it is thought that the number of expanded lattice bodies will increase even more.

A general method for making a lattice body by expanding processing is as shown in Japanese Patent Application Laid-open No. 50-63443, in which a long sheet of lattice material is fed while leaving both sides and the center part solid. Two lattice bodies are made in 11 directions of a long sheet by an expanding process in which the remaining parts are expanded to form an expanded mesh part, and by punching out respective shapes with both side edges as the foot side and the center part as the ear side. The method includes a punching process in which the active material is coated on the expanded mesh portion, and a coating process in which the active material is coated on the expanded mesh portion.

By the way, with this method, it is necessary to remove the solid part at the center of the long sheet by the height of the electrode plate ear, and the part other than the part used as the electrode plate ear becomes punched waste, which reduces raw material costs and collection costs. It has the disadvantage that it takes a lot of time.

Furthermore, this method has the problem that when attempting to manufacture large storage battery plates, the width and length of the equipment must be made very large.

The present invention was made in view of the above points, and aims to effectively use the solid central part of a long sheet, and to manufacture large storage battery plates with relatively small equipment. This is a proposal to make it possible.

Mitsuri's invention, that is, the invention of book box 1, is provided with a lattice body that is made into an expanded mesh part by leaving a part of a sheet of lattice material as a solid part and expanding the remaining part, and the expanded mesh part is In a storage battery electrode plate whose electrode plate surface is formed by applying an active material, there is an electrode plate lug that protrudes from the electrode plate surface, and a continuation of the electrode plate lug that gradually becomes thinner as it moves away from the electrode plate lug. The present invention is characterized in that the current collector rib formed from the solid material is made of solid material.

In addition, the invention in Bookcase 2 is a method for manufacturing a storage battery plate in which a long sheet of lattice material is fed and expanded while leaving at least the central part as a solid part to form a storage battery plate. By cutting the battery electrode plate diagonally from a long sheet, the electrode plate lug protrudes from the electrode plate surface, and the electrode plate lug is formed in a continuous manner so as to become thinner as it gets further away from the electrode plate lug. It is characterized in that the electric rib is formed from a solid part.

tip opening The present invention will be explained below with reference to one embodiment thereof.

That is, Fig. 1 is a schematic diagram showing an embodiment of the present invention in the order of steps, and Fig. 2 is a schematic diagram showing an example of the present invention in which a long sheet of lattice material is fed while leaving both side edges and the center part as a solid part. FIG. 3 is a plan view in which the cutout shape of a storage battery electrode plate is drawn in bold lines on an expanded sheet.

In FIG. 1, A is an uncoiler process, in which a roll 2 on which a long sheet 1 of lattice material made of lead or a lead alloy is wound is arranged.

The long sheet 1 is sequentially pulled out and sent to the expanding process B, and its both side edges 3.
The expanded mesh portion 6 is formed by expanding the mesh portion 4 and the center portion 5 while leaving the solid portion 5 as is.

Next, the long sheet 1 is sent to a punching process C, where unnecessary portions 7 are punched out.

Subsequently, the long sheet 1 is sent to a kneading process, where the active material is kneaded onto the expanded mesh portion 6 and a kneading paper 8 is brought into contact with both surfaces thereof.

Next, the long sheet 1 is sent to a cutting process E, where it is cut into the shape of a storage battery plate 9 as shown by the thick line in FIG. 2, and then sent to the next process, a drying process F. That is, in this cutting, the electrode plate lug 10 is formed in the central part 5, which is a solid part, in a shape that protrudes from the electrode plate surface 11, and the electrode is further thinned as the current collector rib 12 is further away from the electrode plate lug 10. It is also formed in the center part 5 in succession to the plate selvage part 10. In this embodiment, as shown in FIG.
The connection with the electrode plate surface 11 is cut so that the root position is located at the lower end of the current collector rib 12 of the storage battery electrode plate adjacent to the front or rear of the elongated sheet. Further, in this embodiment, the lower end of the current collector rib 12 is formed as one electrode plate foot 13,
The other plate foot 14 is formed from solid side edges 3.4.

Although one embodiment of the present invention has been described in detail above, various embodiments of the present invention can be considered without departing from the spirit thereof. For example, in the above embodiment, the storage battery plate 9 is completed in a series of lines, but it is also possible to separate the processes, for example, after the expanding process B, the long sheet is wound up and sent to the next process. good.

Furthermore, in the above embodiment, the punching step C and the cutting step E are provided as separate steps, but the punching step C may also be performed in the cutting step E, and the punching step C may be omitted.

In addition, if the electrode plate feet are not required, the storage battery electrode plates may be punched out accordingly.

As described above, according to the present invention, it is possible to effectively use the solid central part of a long sheet, and it is also possible to manufacture large storage battery plates with relatively small equipment. . Further, according to the present invention, when applied to a storage battery plate having a relatively high plate height, a storage battery plate with high current collection efficiency and high strength can be obtained. In other words, the present invention has extremely great industrial value.

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing an embodiment of the present invention in the order of steps;
1 is a plan view in which the cut-out shape of a storage battery electrode plate is drawn in bold lines on a sheet that is expanded while feeding a long sheet of lattice material while leaving both side edges and the center part solid in the present invention. A ------- Uncoiler process B ------- Expanding process C - One punching process D - One line coating process E ------- One cutting process F - One - --- Drying process 1 --- One long sheet roll side edge Side edge center part Expanded mesh part Unnecessary part One line coated paper storage battery electrode plate Ear part Pole plate surface Current collector main rib electrode plate Foot one - ------Pole plate foot

Claims (1)

[Scope of Claims] 1) A sheet of lattice material, a part of which is left as a solid part and the remainder is expanded to form an expanded mesh part, and an active material is provided in the expanded mesh part. In a storage battery electrode plate whose electrode plate surface is formed by coating, there is a plate lug that protrudes from the electrode plate surface, and a layer that is connected to the electrode plate lug so that it becomes thinner as it goes away from the electrode plate lug. A storage battery electrode plate characterized in that a current collector rib is formed from a solid part. 2) In a method for manufacturing a storage battery plate, in which a long sheet of lattice material is fed and expanded while leaving at least the central part as a solid part to form a storage battery plate, By cutting diagonally, an electrode plate lug protruding from the electrode plate surface and a current collector rib formed in a continuous manner with the electrode plate lug so as to become thinner as it gets farther away from the electrode plate lug are formed from the solid part. A method of manufacturing a storage battery plate, characterized by the following.