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Lead-acid storage battery partition plate and preparation method thereof

A lead-acid battery and separator technology, which is applied to battery pack parts, circuits, electrical components, etc., can solve the problems that the strength of the separator does not meet the requirements of mechanical automation production of lead-acid batteries, and achieve the improvement of tensile strength and cost increase Effect

Active Publication Date: 2012-08-01
ZHEJIANG CHANGTONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a lead-acid battery separator to solve the problem that the strength of the existing separator does not meet the mechanical automation production requirements of the lead-acid battery

Method used

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  • Lead-acid storage battery partition plate and preparation method thereof
  • Lead-acid storage battery partition plate and preparation method thereof
  • Lead-acid storage battery partition plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Mix 90% glass fiber, 8% polypropylene fiber (length 6-10mm, fineness 5-8dex, melting point about 160°C, Ningbo Tiancheng), 2% polyethylene fiber (length 6-10mm, 5 ~8dex, melting point around 130°C, Jiangnan Chemical Fiber) mixed with water, adjusted to a fiber content of 0.3%, put into a pulper, disintegrated until completely dispersed, and made into slurry; among them, the fiber length of glass fiber is 5-7mm, Fiber diameters of 0.8-2.0 μm accounted for 70%, fiber diameters of 2.0-5.0 μm accounted for 20%, fiber diameters of 5.0-15.0 μm accounted for 10%;

[0028] (2) adjust the pH value of the slurry to 2.0, and pump it into the slurry storage tank for subsequent use;

[0029] (3) Transport the slurry to the working tank, and form it on the web forming curtain according to the traditional papermaking process to obtain the base paper;

[0030] (4) Send the base paper into an oven for drying. After basic drying, raise the temperature to 180°C, keep it for 5 minutes...

Embodiment 2

[0032] (1) 80% glass fiber, 16% polypropylene fiber (length 6-10mm, fineness 5-8dex, melting point about 160°C), 4% polyethylene fiber (length 6-10mm, 5-8dex, The melting point is about 130°C,) mixed into water, adjusted to a fiber content of 0.35%, put into a pulper, disintegrated until completely dispersed, and made into a slurry; among them, the fiber length of the glass fiber is 5-7mm, and the fiber diameter is 0.8-2.0 μm accounts for 80%, fiber diameter 2.0-5.0 μm accounts for 15%, fiber diameter 5.0-15.0 μm accounts for 5%;

[0033] (2) adjust the pH value of the slurry to 2.0, and pump it into the slurry storage tank for subsequent use;

[0034] (3) Transport the slurry to the working tank, and form it on the web forming curtain according to the traditional papermaking process to obtain the base paper;

[0035] (4) Send the base paper into an oven for drying. After basic drying, raise the temperature to 180°C, keep it for 5 minutes, continue drying, and finally cut to ...

Embodiment 3

[0037] (1) 85% glass fiber, 12% polypropylene fiber (length 6-10mm, fineness 5-8dex, melting point about 160°C), 3% polyethylene fiber (length 6-10mm, 5-8dex , with a melting point of about 130°C,) mixed into water, adjusted to a fiber content of 0.2%, put into a pulper, disintegrated until completely dispersed, and made into a slurry; wherein, the fiber length of the glass fiber is 5-7mm, and the fiber diameter is 0.8- 2.0μm accounts for 85%, fiber diameter 2.0~5.0μm accounts for 10%, fiber diameter 5.0~15.0μm accounts for 5%;

[0038] (2) adjust the pH value of the slurry to 2.0, and pump it into the slurry storage tank for subsequent use;

[0039] (3) Transport the slurry to the working tank, and form it on the web forming curtain according to the traditional papermaking process to obtain the base paper;

[0040] (4) Send the base paper into an oven for drying. After basic drying, raise the temperature to 180°C, keep it for 5 minutes, continue drying, and finally cut to ob...

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Abstract

The invention discloses a lead-acid storage battery partition plate and a preparation method thereof. The partition plate comprises a glass fiber serving as a main component and 10 to 20 percent of polyolefin resin fiber of which the melting point is between 100 and 200 DEG C. By adding polyolefin resin into the glass fiber, melting the polyolefin resin during drying and temperature raising, cooling and solidifying, and connecting the surrounding glass fiber, the tensile strength of the final partition plate is improved obviously, and a requirement on mechanical automatic large-scale production of storage batteries can be met; and indexes, such as an acid absorption rate, are not reduced remarkably, so that the cost is not increased basically.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a separator for a power-type lead-acid battery and a preparation method thereof. Background technique [0002] During the assembly and production process of lead-acid batteries, a separator needs to be sandwiched between the positive and negative plates. The separator sandwiched between the positive and negative plates not only plays an insulating role, but also absorbs and stores dilute sulfuric acid electrolyte. Function, the separator sandwiched between the positive and negative plates requires flatness, no wrinkles, no deformation, and the static width is 5mm wider than the plate. In the past, the battery production was to cut the separator into a rectangular shape with a length of 20-40cm, and the staff manually operated it. The separator is folded within the positive and negative plates. [0003] Due to the rising labor cost and the unstable quality of manual operation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16
CPCY02E60/12Y02E60/10
Inventor 赵海敏张天任陈连强杨建芬唐其坤孙浩云吴飞宋文龙
Owner ZHEJIANG CHANGTONG SCI & TECH
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