Improved accumulator partition

A battery separator, an improved technology, applied in the direction of battery components, circuits, electrical components, etc., can solve the problems of shortened cycle life, loss, dry electrolyte, etc., and achieve the goal of simplifying the design measures of poor liquid and improving the ability Effect

Active Publication Date: 2008-08-06
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] This type of separator has a low ability to hold the electrolyte. If the charging rate is too large, the amount of electrolyte will be lost prematurely, causing the electrolyte to dry up and cause thermal runaway, resulting in a shortened cycle life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The mass ratio of each component of the separator in the prior art is shown in Table 1.

[0023] Table I

[0024] Ingredients name

mass percentage

Medium alkali cotton

45～65％

high alkali cotton

35～55％

Feedback

0～5％

short fibre

0～1％

[0025] The mass ratio of each component of the improved battery separator of the present invention is shown in Table 2.

[0026] Table II

[0027] Ingredients name

weight percentage

Medium alkali cotton

45～65％

high alkali cotton

35～55％

Feedback

0～5％

short fibre

0～1％

Nano silica

2 to 6% of the mass of the original ingredients

Sodium Carboxymethyl Cellulose

0.01 to 0.5% of the mass of the original ingredients

[0028] The implementation technological process of the present invention comprises:

[0029] Water production: including mechanical filtration, activated carbon filtr...

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PUM

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Abstract

This invention discloses an improved storage battery baffle in the following mass percentage for each component: medium alkali cotton: 45-65%, high alkali cotton: 35-55%, residual material: 0-5%, short fiber: 0-1%, nm SiO2: 2-6% and carboxymethylcellulose sodium: 0.01-0.5%, which increases the ability for absorbing electrolyte by adding some nm SiO2 and CMC.

Description

【Technical field】 [0001] The present invention relates to batteries, and more particularly to battery separators. 【Background technique】 [0002] The active material of the positive electrode of the lead-acid battery is lead dioxide, the active material of the negative electrode is lead sponge, and the electrolyte is a dilute sulfuric acid solution. +PbO 2 (Positive pole)+2H 2 SO 4 ====2PbSO 4 +2H 2 O (discharge reaction) Its charging chemical reaction is that lead sulfate and water are converted into lead dioxide, sponge lead and dilute sulfuric acid. 2PbSO 4 +2H 2 O====Pb (negative electrode)+PbO 2 (Positive pole)+2H 2 SO 4 (Charging reaction) The rated voltage of a single lead-acid battery is 2.0V. Generally, it is connected in series to 6V and 12V for the starting and lighting of automobiles and motorcycles. The single battery is generally connected in series to 48V, 96V, 110 or 220V for different occasions. The positive and negative plates in the battery use ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/16H01M50/44H01M50/446
CPCY02E60/12Y02E60/10
Inventor 周明明王焕祥
Owner CHAOWEI POWER CO LTD
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