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Nonwoven fabric separator for lead storage battery and lead storage battery using the same

A lead-acid battery and separator technology, applied in the field of non-woven separators, can solve the problem of not disclosing synthetic fiber structure and raw materials, etc., and achieve the effects of excellent ion permeability, excellent processing suitability, and long cycle life

Active Publication Date: 2021-10-01
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is reported that if the valve-controlled lead acid battery described in Patent Document 2 is used, the cycle life characteristics will become better, but the detailed structure and raw materials of the synthetic fibers are not disclosed.
[0010] Therefore, for the valve-controlled lead-acid batteries described in Patent Documents 1 and 2, there is still room for improvement from the viewpoint of extending the cycle life while ensuring high capacity, high output, and low resistance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Nonwoven fabric separator for lead storage battery and lead storage battery using the same
  • Nonwoven fabric separator for lead storage battery and lead storage battery using the same
  • Nonwoven fabric separator for lead storage battery and lead storage battery using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0197] A nonwoven fabric layer (layer II) made of thermoplastic resin fibers is formed. Specifically, a solution (having a solution viscosity measured at a temperature of 35° C. using o-chlorophenol (OCP) as a solvent: ηsp / c = 0.67) using a general-purpose PET (as a thermoplastic resin) (the solution viscosity passed a temperature of 35 The viscosity tube in the constant temperature water tank of ℃ is measured. The following is the same), through the spunbonding method, at the spinning temperature of 300 ℃, the filament group is extruded towards the moving catch net surface, and spun at a spinning speed of 4500m / min . Next, by corona charging, the filament group is charged at about 3 μC / g to fully open the filament group, and a thermoplastic resin filament web is formed on the collecting net. The adjustment of the fiber diameter was performed by changing the drawing conditions to obtain a non-woven fabric separator.

Embodiment 2

[0199] As the superfine fiber non-woven fabric layer (layer I), a solution of PET (having a solution viscosity measured at a temperature of 35°C using OCP as a solvent: ηsp / c=0.50) was used at a spinning temperature of 300°C under heating Air 1000Nm 3 Under the condition of / hr / m, it is spun by melt blowing method and sprayed onto the above-mentioned thermoplastic resin long fiber web. At this time, the distance from the melt blowing nozzle to the thermoplastic resin long fiber web was set to 100 mm, the suction force in the collecting surface directly below the melt blowing nozzle was set to 0.2 kPa, and the wind speed was set to 7 m / sec. The fiber diameter and crystallinity were adjusted by adjusting the amount of heated air to obtain a nonwoven fabric separator including a nonwoven fabric layer (layer I) made of ultrafine fibers.

Embodiment 3

[0201] A PET-SM structure is formed by directly laminating the mesh sheet on the continuous long-fiber nonwoven fabric produced by the spunbond method by the same melt blown method as above. Furthermore, the nonwoven separator was obtained by adjusting the thickness and the apparent density to a desired thickness while integrating the calender rolls.

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Abstract

The nonwoven fabric separator for lead storage batteries contains the nonwoven fabric which consists of recycled fibers or synthetic fibers.

Description

technical field [0001] This invention relates to the nonwoven fabric separator for lead acid batteries, and the lead acid battery using the same. Background technique [0002] Among the secondary batteries, the world's most-produced lead storage batteries are currently widely used in automobiles such as engine starters, power supplies such as forklifts, and communication equipment such as uninterruptible power supplies (UPS). [0003] In recent years, due to the diversification of market demands, lead-acid batteries have been developed to achieve high functions such as high durability, high capacity, and long life. [0004] In particular, battery life is required to be extended in idling stop applications where charge and discharge are repeated in a partial state of charge (PSOC: Partial State of Charge), or in deep cycle (DC: Deep Cycle) applications accompanied by extremely deep charge depths. . [0005] With regard to prolonging the life of battery performance, a strati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/44H01M50/403H01M50/414H01M50/434H01M50/449H01M50/457H01M50/489H01M50/491H01M50/494
CPCH01M10/06Y02E60/10H01M50/44H01M50/449H01M50/457H01M50/414H01M50/491H01M50/434H01M50/489H01M50/403H01M50/494H01M50/446H01M50/463H01M50/417H01M50/4295H01M50/431H01M50/443H01M50/46H01M10/12H01M10/121Y02P70/50H01M10/08
Inventor 日下部纯一天野整一加藤一史
Owner ASAHI KASEI KK
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