A kind of lead storage battery separator and lead storage battery

A technology for lead-acid batteries and separators, applied in lead-acid batteries, battery components, circuits, etc., can solve the problems of high tensile fracture strength, high durable pressure, and high acid absorption, and achieve high tensile fracture strength, Good application prospect, high acid absorption effect

Active Publication Date: 2020-04-21
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of large maximum pore size, uneven pore size distribution and poor compression resilience in the prior art, the present invention provides an AGM separator with small pore size, high acid absorption capacity, high durable pressure and high tensile breaking strength. lead battery separator

Method used

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  • A kind of lead storage battery separator and lead storage battery
  • A kind of lead storage battery separator and lead storage battery
  • A kind of lead storage battery separator and lead storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 15kg of PA / COPET sea-island fibers with a linear density of 0.62dtex and 40 islands / root for acid treatment to obtain superfine fibers. The acid treatment method is to put the sea-island fibers into 10% H 2 SO 4 In the solution, stir for 20 minutes to make the sea-island fibers fully contact with the acid solution, dissolve the "sea" (PA) of the PA / COPET sea-island fibers in the acid solution, and obtain 8.5kg of modified polyester superfine fiber bundles in the form of COPET. (COPET sea-island silk), the fineness of the dispersed modified polyester sea-island fiber is 0.01D.

[0028] Take by weighing 4.5kg of COPET island-in-the-sea silk with a fineness of 0.01D prepared above, 25.5kg of glass fibers (wherein 29° glass fiber accounts for 45%, and 35° glass fiber accounts for 55%), both total 30kg (COPET sea-island silk accounts for 15%) %), add 12 tons of water and mix it into a slurry, and use the wet forming process to manufacture sea-island / glass fiber nonwov...

Embodiment 2

[0030] Weigh 15kg of PA / COPET sea-island fibers with a linear density of 0.69dtex and 50 islands / root for acid treatment to obtain superfine fibers. The acid treatment method is to put the sea-island fibers into 15% H 2 SO 4 In the solution, stir for 20 minutes to make the sea-island fibers fully contact with the acid solution, dissolve the "sea" (PA) of the PA / COPET sea-island fibers in the acid solution, and obtain 8.2kg of COPET-shaped modified polyester superfine fiber bundles (COPET sea-island silk), the fineness of the dispersed modified polyester sea-island fiber is 0.008D.

[0031] Take by weighing 7.5kg of COPET island-in-the-sea yarns with a fineness of 0.008D, 22.5kg of glass fibers (wherein 29° glass fibers account for 45%, and 35° glass fibers account for 55%). %), add 12 tons of water and mix it into a slurry, and use the wet forming process to manufacture sea-island / glass fiber nonwoven materials. The drying process temperature is 40 minutes at 90°C, 40 minutes...

Embodiment 3

[0033] Weigh 15kg of PA / COPET sea-island fibers with a linear density of 0.60dtex and 60 islands / root for acid treatment to obtain superfine fibers. The acid treatment method is to put the sea-island fibers into 10% H 2 SO 4In the solution, stir for 20 minutes to make the sea-island fibers fully contact with the acid solution, dissolve the "sea" (PA) of the PA / COPET sea-island fibers in the acid solution, and obtain 8.7kg of COPET-shaped modified polyester superfine fiber bundles (COPET sea-island silk), the fineness of the dispersed modified polyester sea-island fiber is 0.006D.

[0034] Take by weighing the COPET island-in-the-sea silk 1.5kg with a fineness of 0.006D prepared above, glass fiber (wherein 29° glass fiber accounts for 45%, and 35° glass fiber accounts for 55%) 28.5kg, both total 30kg (COPET sea-island silk accounts for 5% %), add 12 tons of water and mix it into a slurry, and use the wet forming process to manufacture sea-island / glass fiber nonwoven materials....

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Abstract

The invention discloses a lead storage battery separator and a lead storage battery. The components of the lead storage battery separator include glass fiber and COPET island-in-the-sea yarn, wherein the COPET island-in-the-sea yarn is obtained from PA / COPET island-in-the-sea fiber through sea-melting treatment. COPET island-in-the-sea yarns are added to the lead storage battery separator of the present invention during preparation, and the island-in-the-sea yarns of COPET are obtained from PA / COPET island-in-the-sea fibers after sea-melting treatment. After the sea-island fiber is separated, the monofilament fineness is relatively fine, which cannot be achieved by conventional spinning, so it has characteristics that ordinary fibers cannot have. Compared with common AGM separators, the lead storage battery separator of the present invention has the advantages of high acid absorption capacity, high durable pressure, high tensile fracture strength, etc., and has good application prospects.

Description

technical field [0001] The invention relates to the technical field of lead storage battery production, in particular to a lead storage battery separator and a lead storage battery. Background technique [0002] Lead-acid batteries have a history of more than 150 years and have a wide range of applications. In recent years, electric vehicles have developed rapidly in my country due to their better mobility performance, lower storage space requirements and excellent price advantages. Thanks to this, the battery industry has also developed rapidly. [0003] Lead-acid batteries are mainly composed of positive and negative plates, separators, shells, electrolytes, and poles. The separator in the lead-acid battery not only plays the role of separating the positive and negative plates, but also requires the separator to have high porosity, small pore size, strong oxidation resistance, ability to absorb and maintain sufficient electrolyte, and good compression rebound, etc. chara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/16H01M10/06H01M50/44
CPCH01M10/06H01M50/411H01M50/44Y02E60/10
Inventor 孔春凤郭志刚张峰博陈飞陈跃武崔海涛
Owner TIANNENG BATTERY GROUP
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