JP2009170184A - Lead-acid battery connecting lattice body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lead-acid battery lattice body without deforming a connecting lattice body, when manufacturing a plate by using the connecting lattice body for connecting a plurality of lead-acid battery lattice bodies by leg parts. <P>SOLUTION: The lead-acid battery lattice body 1 uses a lattice part 3 having a lattice 2 holding an active material, a current collecting part 4 arranged in an upper frame 3a of the lattice part 3 and a plurality of leg parts 5 and 6 arranged in a lower frame 3b of the lattice part 3, as a main part. The lead-acid battery lattice body is formed by arranging straight line-shaped lattices 7 and 8 for connecting the current collating part 4 and the leg parts 5 and 6 by at least one in the lattice part 3. Since the straight line-shaped lattices 7 and 8 for connecting the current collecting part 4 and the leg parts 5 and 6 are arranged in the lattice part 3, strength of the connecting lattice body 9 is improved, and deformation is hardly caused when supporting, holding and carrying the connecting lattice body 9 by the current collecting parts 4 and 4 on its both sides. Thus, a manufacturing yield of the plate is improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lead-acid battery connection grid that is difficult to deform when the electrode plate is manufactured using a connection grid that is obtained by connecting a plurality of lead-acid battery unit grids with legs.

  For example, a lead-acid battery used for starting an automobile is manufactured by storing a group of electrode plates composed of a large number of electrode plates and a large amount of electrolyte in a battery case. The electrode plate used is obtained by applying and filling a paste-form active material on a grid substrate. The unit grid of this lead storage battery has a grid 2 for holding the active material as shown in FIG. The grid portion 3 provided, a current collector (ear portion) 4 provided on the upper frame 3a of the grid portion 3, and a plurality of legs 5 and 6 provided on the lower frame 3b of the grid portion 3 Yes.

  When the unit grid 1 is die-cast, in order to increase productivity, as shown in FIG. 4 (b), a pair (plural) of grids 1 are connected to each other by their legs 5 and 6 to form a connected grid. The body 9 is often cast. The connecting grid 9 is subjected to various processes such as filling of active material, drying, and aging, and then cut between the legs 5 and 6 to produce a plurality of electrode plates.

  However, since the connection grid body 9 is held and transported until the electrode plate is manufactured by supporting the current collectors 4 and 4 on both sides of the connection grid body 9, the connection grid body 9 is As shown in FIG. 4 (c), there is a problem in that the holding plate is deformed by its own weight during holding and transporting, resulting in a dimensional defect in the electrode plate after the foot is cut, and the manufacturing yield of the electrode plate is reduced. there were.

  In addition, the transport of the connecting grid 9 is not performed by the current collectors 4 and 4 on both sides, but a relatively wide portion called a “discard ear” is provided at the outermost upper end of the connecting grid 9. In some cases, the hanging ears for casting are cast integrally, and finally cut and removed to produce the electrode plate. However, as described above, there is a problem that the holding plate is deformed into a U shape by its own weight during holding and transporting.

  In order to prevent deformation of the connection grid body, the lead storage battery in which the upper end position of the suspension ear formed integrally with the connection grid body is the same as or lower than the upper end position of the portion where the grid bodies are connected to each other A connecting grid substrate for use has been proposed (Patent Document 1).

JP 2006-173029 A

However, the method described in Patent Document 1 has a limit to resist the force that the connected grid substrate is deformed by the portion that is connected by the upward stress applied to the hanging ear for suspension. In the case of producing a large number of lattice bodies at one time (one having a large lattice body weight) or a large amount of lattice bodies at times.
Under such circumstances, the inventor of the present application has studied various methods for preventing deformation of the connecting grid.
As a result, it was found that in a lattice body consisting of a pair or more, it is possible to prevent the deformation of the connected lattice body by providing a linear lattice connecting the current collecting portion and the foot portion to the lattice portion. The invention has been completed.
An object of the present invention is to provide a lead-acid battery grid body in which a plurality of lead-acid battery unit grid bodies are connected by legs, and the connection grid body is not easily deformed.

  The present invention is a lead comprising: a lattice portion having a lattice for holding an active material; a current collecting portion provided on an upper frame of the lattice portion; and a plurality of feet provided on a lower frame of the lattice portion In a lead-acid battery connection grid body in which a plurality of sheets are integrated in a state where the storage battery unit grid bodies are connected to each other at the feet, between the current collectors of each unit grid body and the plurality of legs provided on the lower frame At least two linear grids are provided, and the linear grid provided on one unit grid and the linear grid provided on the other unit grid are continuous via the legs. It is the lead storage battery connection grid body characterized by having carried out.

  The lead-acid battery connection grid of the present invention is provided with a linear grid connecting the current collector and the plurality of legs in the grid, and further provided in the unit grid in a unit grid consisting of a pair or more. Since the linear grid is continuous through the legs, the strength of the coupled grid is improved. Therefore, when the electrode plate is manufactured, the connecting grid body is hardly deformed even if it is supported and held by the current collecting portions on both sides thereof, and the manufacturing yield of the electrode plate is improved.

An embodiment of the lead-acid battery connection grid of the present invention will be described with reference to the drawings.
A lead-acid battery connection grid 9 shown in FIG. 1 (a) is cast in a form in which a plurality of lead-acid battery unit grids 1 shown in FIG. It is. The lead-acid battery unit grid 1 includes a grid 2 composed of vertical grids and horizontal grids arranged in a large number of grids for holding an active material, and an upper frame 3a, a lower frame 3b, and a horizontal frame 3c surrounding the square. The main part is a grid part configured, a current collecting part 4 that protrudes from one side of the upper frame 3a, and a plurality of legs 5 and 6 that protrude from one side of the lower frame 3b. In addition to the grid 2 made of a grid, linear grids 7 and 8 are provided between the current collector 4 and the legs 5 and 6, respectively.

The lead-acid battery unit grid 1 shown in FIGS. 2 and 3 is different from the lead-acid battery unit grid 1 shown in FIG. 1B in that the vertical grid is centered around the current collector. Instead of providing a new linear grid between the electric part 4 and the foot parts 5 and 6, respectively, the current collecting part 4 of the vertical grid formed in the shape of a letter C is provided across the leg parts 5 and 6 respectively. By using the vertical grids 7 and 8 as a straight grid, it is possible to reduce the weight and the amount of lead of the lead-acid battery unit grid 1.

The lead-acid battery connection grid 9 of the present invention cast in a form in which a plurality of the legs 5 and 6 of the lead-acid battery unit grid 1 shown in FIGS. (See FIG. 1 (a)), at least two linear grids 7 and 8 are provided between the current collecting section 4 and the legs 5 and 6 of the grid section 3, and further provided in the lead storage battery unit grid body 1. Since the linear lattices 7 and 8 thus formed are continuous through the legs, they are difficult to be deformed when the electrode plate is manufactured. Accordingly, the dimensional defects of the electrode plate are reduced and the manufacturing yield is improved.

Hereinafter, the present invention will be described in detail with reference to examples.
The connection grid body 9 (see FIG. 1 (a)) of the present invention is obtained by die casting in a form in which two lead parts 5 and 6 each having a lead storage battery unit grid body 1 are connected to each other and connected to each other. Made. The obtained connecting grid 9 is filled with a paste-like active material, then dried and aged, and then the connecting parts 51 and 61 of the legs 5 and 6 of the connecting grid 9 (a pair of lead-acid battery unit grids 1). The electrode plate was manufactured by cutting the foot portions 5 and 6 in the middle portion).
The holding and transporting of the connecting grid 9 during the production of the electrode plate was performed by supporting the current collectors 4 formed on both sides of the connecting grid 9. The number of dimensional defects was examined for each 1000 electrode plates that had been cut.
The lead-acid battery connection grid 9 is made of a lead-based alloy that is appropriately added by selecting metals such as calcium, tin, and aluminum from lead, and is arranged in a number of grids that hold an active material. A grid 2 composed of a grid and a horizontal grid, a grid 3 composed of an upper frame 3a, a lower frame 3b, and a horizontal frame 3c that surrounds a square, and a current collector 4 formed to protrude from one side of the upper frame 3a Two pieces of the lead-acid battery unit grid 1 having two legs 5 and 6 formed as protruding from one side of the lower frame 3b are connected to each other by the two legs 5 and 6 and cast. (No. 1). At this time, the two legs 5 and 6 formed on the lower frame 3b are shifted from the projection position on the lower frame 3b of the current collector 4 formed on the upper frame 3a, and the projection position of the current collector 4 is shifted. They are positioned so as to be sandwiched. Each lead storage battery unit grid 1, 1 is provided with a total of two linear grids 7, 8 between the current collector 4 and the legs 5, 6 separately from the grid 2 composed of a vertical grid and a horizontal grid. It is what has been. As a result, the linear grids 7 and 8 provided in each lead-acid battery unit grid 1 are continuous via the legs 5 and 6, respectively.
Similarly, the vertical grid 2 is formed in a square shape centering on the current collector 4, and at least two of the vertical grids 2 are linear shapes extending from the current collector 4 to the respective legs 5 and 6. A unit lattice body 1 shown in FIG. 2 having the lattice of FIG. 2 is connected and cast in the same manner (No. 2), and a part of the C-shaped vertical lattice 2 is continuous from the upper frame 3a to the lower frame 3b. Thus, the grid that is cut off in the middle and is not discontinuous and not linear, but that extends from the current collector 4 to the legs 5 and 6 is provided with a linear grid. 3 were prepared by similarly connecting and casting the unit cell bodies 1 described in No. 3 (No. 3), producing electrode plates in the same manner, and conducting similar investigations.

[Comparative Example 1]
As shown in FIG. 4 (a), the connection grid 9 of the conventional lead-acid battery unit grid 1 (FIG. 4) is the same as that of the first embodiment except that there is no linear grid in the grid of the first embodiment. The electrode plate was manufactured by the same method as in Example 1 and the same investigation as in Example 1 was performed.

[Comparative Example 2]
As shown in FIG. 5, in the grid body of the first embodiment, the lead-acid battery unit grid is the same as that of the first embodiment except that two linear grids are provided across the both ends of the lower frame from the current collector 4. About the connection grid body of the body 1, the electrode plate was manufactured by the same method as Example 1, and the same investigation as Example 1 was conducted.

[Comparative Example 3]
As shown in FIG. 6, the lead storage battery of Example 1 is the same as Example 1 except that a single linear grid is provided from the current collector 4 to only one leg 5 in the grid of Example 1. About the connection grid body of the unit grid body 1, the electrode plate was manufactured by the same method as Example 1, and the same investigation as Example 1 was conducted.
The results of Example 1 and Comparative Examples 1 to 3 are shown in Table 1.

[Table 1]

As apparent from Table 1, the number of defective dimensions of the electrode plate using the grids of the examples of the present invention (Example 1: Nos. 1 to 3) was zero.
On the other hand, the grid of Comparative Example 1 (No. 4) has an increased number of dimensionally defective plates because there is no reinforcing grid. In the lattice body of Comparative Example 2 (No. 5), since the linear lattice is not continuous from the current collecting portion to the foot portion (discontinuous), the force is dispersed and the distortion effect is not sufficient. In the lattice body of Comparative Example 3 (No. 6), a linear lattice is continuous from the current collecting portion to the foot portion, but the effect is not sufficient because the number of lattices is one.
In the first embodiment, the two legs 5 and 6 formed on the lower frame 3b are shifted from the projection positions on the lower frame 3b of the current collector 4 formed on the upper frame 3a. However, the current collector is formed at the end of the upper frame, and each foot is biased to only one side from the projection position of the current collector. Even if the connecting grid body is positioned, the effect is obtained, but the effect is slightly inferior to that of the first embodiment. In addition, in the case where there are a large number of three or four feet, it is not necessary to form a linear grid extending across the current collector shell across all the feet, and at least two feet should be formed. It ’s fine.

(A) is a plane explanatory drawing of the connection grid body which shows the 1st Embodiment of this invention, (b) is a plane explanatory drawing of the unit grid body of the said connection grid body. It is a plane explanatory view showing a 2nd embodiment of a lead storage battery unit lattice object of the present invention. It is a plane explanatory view showing a 3rd embodiment of a lead storage battery unit lattice object of the present invention. (A) is a plane explanatory view of a conventional lead-acid battery grid, (B) is a plane explanatory view of a connected grid body in which the grid bodies are connected by feet, and (C) is a plane explanatory view of a deformed connected grid body. It is. It is a plane explanatory view of a lead storage battery lattice body provided with an oblique lattice as a comparative example. It is a lead storage battery grid top plane explanatory view which used one linear grid as a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lead acid battery unit lattice body 2 The grating | lattice 3 which hold | maintains an active material The grating | lattice part 3a The upper frame 3b of a grating | lattice part The lower frame 3c of a grating | lattice part The current collecting parts 5 and 6 The leg | foot parts 51 and 61 of a grating | lattice part Sections 7 and 8 A linear grid 9 connecting the current collector section and the foot section. A connected grid body 10 in which a plurality of lead-acid battery grid bodies are coupled at the foot section.

Claims (1)

A lead-acid battery unit lattice body comprising: a lattice portion having a lattice for holding an active material; a current collecting portion provided on an upper frame of the lattice portion; and a plurality of legs provided on a lower frame of the lattice portion In a lead-acid battery connection grid body in which a plurality of sheets are integrated with each other in a state where the legs are connected to each other, a linear shape extending from the current collector portion of each unit grid body to the plurality of foot portions provided on the lower frame At least two grids, and a linear grid provided on one unit grid and a linear grid provided on the other unit grid are respectively continuous via the legs. A lead-acid battery connection grid body characterized by the above.