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Expand grid and manufacturing method thereof, lead storage battery polar plate using expand grid, and lead storage battery

A technology of drawing a mesh grille and a manufacturing method, which is applied in the directions of lead-acid battery electrodes, lead-acid batteries, battery electrodes, etc., can solve the problem of inadvertently wrinkling, affecting the stability of the pole plate, and unable to control the number and degree of formation, etc. problem, to achieve the effect of excellent discharge capacity and excellent cycle life

Active Publication Date: 2012-07-11
松下蓄电池(沈阳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, when the process conditions of the cutting and drawing process change, for example, when the travel speed of the lead belt does not match the stamping speed of the mold, sometimes some ribs forming the mesh will be wrinkled, and the stretched grid will be uneven after unfolding. , affecting the stability of subsequent plate production
Since such wrinkles are usually generated randomly, the number and degree of their formation cannot be controlled. Therefore, there is no conscious research on the wrinkles produced when the expanded grid is manufactured by the slit method. Moreover, the expanded grid Wrinkles in the grid are considered to be a sign of poor productivity, and it is desirable to avoid such wrinkles as much as possible

Method used

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  • Expand grid and manufacturing method thereof, lead storage battery polar plate using expand grid, and lead storage battery
  • Expand grid and manufacturing method thereof, lead storage battery polar plate using expand grid, and lead storage battery
  • Expand grid and manufacturing method thereof, lead storage battery polar plate using expand grid, and lead storage battery

Examples

Experimental program
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Effect test

Embodiment 1

[0092] (Production of positive plate)

[0093] While feeding the raw material lead strip made of Pb-Ca-Sn ternary alloy flakes into the stamping die, external equipment controls the relative movement between the movable mold and the static mold, repeatedly punching the lead strip up and down, and then, using a shaping mold The obtained mesh sheet was shaped horizontally by the guide rollers to obtain a planar mesh.

[0094] Then, the raw material lead powder, water, and sulfuric acid were added and mixed at a weight ratio of 100:15:10 to obtain a positive electrode paste. Fill the positive lead paste on the reshaped mesh. Then, the mesh that is filled with lead paste is cut into prescribed shape and size, has obtained the expanded grid that has been filled with lead paste, forms positive plate of the present invention (longitudinal: 139mm, horizontal: 64mm, thick : 2.9mm).

[0095] During this process, the cutting depth and stroke number of the movable mold are adjusted by ...

Embodiment 2

[0107] In the production of the positive plate, the cutting depth and the number of strokes of the movable mold were adjusted by external equipment, so that the wrinkle occurrence rate measured on the expanded grid was 11%, and the wrinkle degree was 0.11. Except for this, a positive electrode plate was produced in the same manner as in Example 1, and a negative electrode plate and a lead acid battery were produced in the same manner as in Example 1.

Embodiment 3

[0109]In the production of the positive plate, the cutting depth and the number of strokes of the movable mold were adjusted by external equipment, so that the wrinkle occurrence rate measured on the expanded grid was 11%, and the wrinkle degree was 0.14. Except for this, a positive electrode plate was produced in the same manner as in Example 1, and a negative electrode plate and a lead acid battery were produced in the same manner as in Example 1.

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Abstract

The invention provides an expand grid and a manufacturing method thereof, a lead storage battery polar plate using the expand grid, and a lead storage battery. The expand grid is formed by using an expanding method, and comprises a plurality of rhombic meshes consisting of ribs. The expand grid is characterized in that: part of the ribs are draped, so that convex bends are formed; in a projection picture of the expand grid, when a distance between edges of each rhombic mesh, namely between two parallelly opposite ribs which are not draped, is D1, and a distance between the bent peak of each draped rib and the other parallelly opposite rib is D2, the draped degree W of the bending degree of each rib is determined by the following formula W=(D2-D1) / D1 (1), wherein D2 is greater than D1; and the draped degree is in the range of 0.09 to 0.19.

Description

technical field [0001] The present invention relates to an expanded grid, a manufacturing method thereof, and an electrode plate for a lead storage battery using the expanded grid, and a lead storage battery. Background technique [0002] Lead-acid batteries have the advantages of low price, stable output, and suitable for high-current discharge. They have been widely used in the fields of vehicle starting, main power supply and backup power supply of electric vehicles or electric tools. [0003] Lead-acid batteries mainly include open liquid lead-acid batteries and sealed valve-regulated lead-acid batteries. Among them, valve-regulated lead-acid batteries have the advantage of being maintenance-free, so they are more widely used. Valve-regulated lead-acid batteries are composed of positive plates, negative plates, diaphragms, electrolytes, casings with safety valves, etc. Both positive and negative plates are paste-type plates, and active materials are filled on special all...

Claims

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Application Information

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IPC IPC(8): H01M4/73H01M4/14H01M10/06H01M4/82
CPCY02E60/12Y02E60/126H01M4/74H01M4/73H01M4/745Y02E60/10
Inventor TIAN XIAOSHENPAN YULIANGKUREMATSU MICHIOMURATA YOSHIHIROSUZUKI KENHIRO
Owner 松下蓄电池(沈阳)有限公司
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