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Tubular positive plate and preparation method thereof

A positive plate and tubular technology, applied in the field of tubular positive plate and its preparation, can solve the problems affecting battery charge and discharge performance, low porosity of tubular positive plate, uneven current potential, etc., to improve electron transmission speed and The effect of electrochemical reaction area, small electron transport resistance, and consistent crystal form

Active Publication Date: 2019-12-03
ZIBO TORCH ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The use of tubular positive plates in lead-acid batteries can prevent the active material from softening and falling off, prolonging the service life of the battery, but the porosity of the tubular positive plates is low, which becomes the limiting factor of battery performance during high current charging and discharging
In addition, the tubular positive plate generally adopts gravity casting and pressure casting. Both methods are difficult to avoid pores, slag inclusions, shrinkage and large-sized crystals in some parts of the grid, which will cause pitting corrosion of the grid during use. Intergranular corrosion and lamellar corrosion
At the same time, the back cover of the traditional tubular battery is made of plastic, which only plays the role of sealing the active material. Therefore, the tubes of the tubular positive electrode are not electrically connected to each other, so the distribution of the current potential on the plate becomes uneven, which affects the charge and discharge performance of the battery.

Method used

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  • Tubular positive plate and preparation method thereof
  • Tubular positive plate and preparation method thereof
  • Tubular positive plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] After heating the lead-antimony quinary alloy to 325±25°C, cold-extrude to form clover leaf-shaped ribs 4 (leaves are 4 pieces), and after making 14 ribs 4 into a length of 115mm, cast and weld to form the upper beam 2 And plate lug 1 (plate lug 1 is trapezoidal, vertical angle is 2°), the upper beam 2 is a positive grid with a width of 145mm, and then the non-woven fabric pipe 3 is set. After the lead powder is poured, use conductive plastic containing carbon fiber The bottom is sealed, and then enters the pickling and curing procedures. Use 3 pieces of the positive plate and 4 pieces of the traditional negative (side) plate of the lead-acid battery to assemble a 2V 60Ah simulated battery. The results are shown in Table 1.

[0029] Table 1

[0030]

[0031]

[0032] Detect the potential distribution of the monolithic electrode during the discharge of 3C current, see the results image 3 . It can be seen from the figure that although the positive plate is disch...

Embodiment 2

[0034] After heating the lead-antimony quinary alloy to 325±25°C, cold-extrude to form cloverleaf-shaped ribs 4 (leaves are 2 pieces), and after making 14 ribs 4 into 310mm in length, casting and welding form the upper beam 2 And the plate lug 1 (the plate lug 1 is trapezoidal, the vertical angle is 4°), the upper beam 2 is a 145mm wide 2DB120H lead-acid battery positive grid for tractors, and then the non-woven fabric pipe 3 is installed, and after the lead powder is poured, Use conductive plastic with Teflon and conductive carbon black to seal the bottom, then enter the pickling and curing procedures, use 2 pieces of the positive plate and 3 pieces of the traditional negative (side) plate of the lead-acid battery to assemble a 2V120Ah sample battery , the initial performance test was carried out after the acid cycle was formed, and the test results are shown in Table 2.

[0035] Table 2

[0036] project GB / T 7403.1-2008 standard requirements Test data Fir...

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Abstract

The invention relates to a tubular positive plate and a preparation method thereof, belonging to the technical field of lead-acid storage batteries. The tubular positive plate disclosed by the invention comprises a tubular positive grid, a tube bank and a sealing bottom, wherein the tubular positive grid comprises lugs, an upper beam and ribs; the cross sections of the ribs are clover-leaf shaped;and the sealing bottom is made of conductive plastics. The tubular positive plate disclosed by the invention is high in power, long in service life and uniform in current-potential distribution. Theinvention also provides a simple and feasible preparation method for improving the corrosion resistance of the grid.

Description

technical field [0001] The invention relates to a tubular positive plate and a preparation method thereof, belonging to the technical field of lead-acid storage batteries. Background technique [0002] The use of tubular positive plates in lead-acid batteries can prevent the active material from softening and falling off and prolong the service life of the battery. However, the low porosity of the tubular positive plates becomes a limiting factor for battery performance during high current charging and discharging. In addition, the tubular positive plate generally adopts gravity casting and pressure casting. Both methods are difficult to avoid pores, slag inclusions, shrinkage and large-sized crystals in some parts of the grid, which will cause pitting corrosion of the grid during use. Intergranular corrosion and lamellar corrosion. At the same time, the back cover of the traditional tubular battery is made of plastic, which only plays the role of sealing the active materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/16H01M4/22H01M4/76H01M4/84
CPCH01M4/16H01M4/22H01M4/765H01M4/84Y02E60/10
Inventor 战祥连唐胜群徐林青陈龙霞李艳芬李敏马玉竹
Owner ZIBO TORCH ENERGY
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