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Colloid storage battery separator and preparation method thereof

A colloidal battery and separator technology, which is applied in battery pack parts, circuits, electrical components, etc., can solve the problems of the electrolyte being difficult to pour into the battery according to the amount, and the colloid is sticky, etc., so as to prevent the battery from micro-short circuit and circulation. The effect of increasing the life and reducing the transfer coefficient

Active Publication Date: 2013-09-18
SHANDONG LIAOCHENG UNIVERSAL GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) The colloid is viscous, even under vacuum pumping, the electrolyte is not easy to pour into the battery according to the amount

Method used

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  • Colloid storage battery separator and preparation method thereof
  • Colloid storage battery separator and preparation method thereof
  • Colloid storage battery separator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of the gel battery separator, the steps are as follows:

[0028] 1) After mixing ultrafine glass fiber, silica powder and modified diatomite at a mass ratio of 100:4:2, add them to an aqueous solution with a pH value of 2.5 to 3.0, so that the mass of ultrafine glass fiber in the solution The content is 2‰, stirring at room temperature for 30 minutes;

[0029] 2) The prepared slurry is vacuum dehydrated and formed according to the vacuum dehydration forming method of ordinary glass fiber separators, and the vacuum degree is 0.02 MPa. Then, the used mesh screen is dehydrated and immediately washed under the pressure of 1-4MPa under high pressure.

[0030] 3) Dry the dehydrated separator in two temperature zones. The temperature of the first drying zone is 300°C, and the drying time is 8 minutes; the temperature of the second drying zone is 250°C, and the drying time is 15 minutes. Then, according to the needs of different types of batteries, they...

Embodiment 2

[0034] The preparation method of the gel battery separator, the steps are as follows:

[0035] 1) After mixing ultrafine glass fiber, silica powder and modified diatomaceous earth in a mass ratio of 100:15:8, add it to an aqueous solution with a pH value of 2.5 to 3.0, so that the mass of ultrafine glass fiber in the solution The content is 2.5‰, stirred at room temperature for 60 minutes;

[0036] 2) The prepared slurry is vacuum dehydrated and formed according to the vacuum dehydration forming method of ordinary glass fiber separators, and the vacuum degree is 0.06 MPa. Then, the used mesh screen is dehydrated and immediately washed under the pressure of 1-4MPa under high pressure.

[0037] 3) Dry the dehydrated separator in two temperature zones. The temperature of the first drying zone is 320°C, and the drying time is 10 minutes; the temperature of the second drying zone is 280°C, and the drying time is 10 minutes. Then, according to the needs of different types of batte...

Embodiment 3

[0041] The preparation method of the gel battery separator, the steps are as follows:

[0042] 1) After mixing ultrafine glass fiber, silica powder and modified diatomaceous earth in a mass ratio of 100:20:6, add it to an aqueous solution with a pH value of 2.5 to 3.0, so that the mass of ultrafine glass fiber in the solution The content is 3‰, stirring at room temperature for 60 minutes;

[0043]2) The prepared slurry is vacuum dehydrated and formed according to the vacuum dehydration forming method of ordinary glass fiber separators, and the vacuum degree is 0.04 MPa. Then, the used mesh screen is dehydrated and immediately washed under the pressure of 1-4MPa under high pressure.

[0044] 3) Dry the dehydrated separator in two temperature zones. The temperature of the first drying zone is 350°C, and the drying time is 5 minutes; the temperature of the second drying zone is 290°C, and the drying time is 10 minutes. Then, according to the needs of different types of batterie...

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Abstract

The invention relates to a colloid storage battery separator and a preparation method thereof. The colloid storage battery separator comprises the following raw materials in part by weight: 100 parts of ultrafine glass fibers, 4 to 20 parts of silicon dioxide powder and 2 to 8 parts of modified kieselguhr. The modified kieselguhr is prepared by drying kieselguhr, adding a sulfuric acid solution into the dried kieselguhr, then adding a polyfluortetraethylene emulsion and drying the mixture. For a battery formed by the separator, the circulating life of the battery can be prolonged, the air outlet of the battery is reduced, acid liquor can be uniformly distributed in the battery and meanwhile, the micro short circuit of the battery, which is caused by a lead dendritic crystal penetration separator, can be effectively prevented.

Description

technical field [0001] The invention relates to a partition material used in storage batteries and a preparation method thereof, which is particularly suitable for valve-controlled sealed lead-acid batteries and colloidal lead-acid batteries, and belongs to the technical field of storage batteries. Background technique [0002] Lead-acid batteries are still the battery series with the highest output, the largest output value and the most widely used among all battery varieties in the world. In some fields, it is still irreplaceable by other battery series varieties. Therefore, how to prolong the service life of the lead-acid battery and reduce the technical problems such as battery gas output has become a research hotspot. The emergence and application of colloidal lead-acid batteries have made great contributions to solving these problems. However, the current gel batteries still have the following problems: [0003] 1) The colloid is viscous, and even under vacuum pumpi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/16
CPCY02E60/10
Inventor 王立家虞文洲张翔王嘉綮夏雷
Owner SHANDONG LIAOCHENG UNIVERSAL GLASS CO LTD
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