Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for manufacturing alkaline cell diaphragm

A manufacturing method and technology of alkaline batteries, applied in battery components, circuits, electrical components, etc., can solve the problems of lowering the discharge voltage platform, lowering rate discharge performance, etc., and achieve strong operability, simple polymerization process and equipment , Improving the effect of membrane liquid absorption and anti-oxidation performance

Inactive Publication Date: 2005-08-31
刘朋军
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the gelling agent is directly used in Ni-MH and Ni-Cd secondary batteries, since the electrolyte is wrapped by polymers with a network structure, it will greatly increase the amount of alkali absorption and at the same time reduce the rate discharge performance and reduce the discharge rate. Voltage platform, carboxyl poisoned electrode or micro short circuit inside the battery

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] In an open container, select chemically pure reagents, add 500ml of 50wt% acrylic acid aqueous solution, 460ml of 7.5wt% sodium hydroxide aqueous solution, 680ml of 35wt% sodium bicarbonate aqueous solution, and 1wt% N N'-methylenebisacrylamide aqueous solution 25ml, 300ml of 0.5wt% potassium persulfate aqueous solution, 100ml of 0.5wt% sodium bisulfite aqueous solution, 65ml of pure acrylic acid liquid and 3g of potassium chloride solid particles, stir to make it dissolve and mix uniformly. Immersion in a commercially available nylon membrane with an average thickness of 162 microns and a quantitative average basis weight of 54 g / m 2 , take it out after wetting it all and put it on a layer of plastic cloth, cover the surface with another layer of plastic cloth, wind it tightly and squeeze out the excess solution, tie it tightly, put it in a civilian microwave oven and heat it on low heat for 5 minutes with an interval of 5 minutes , switch to medium heat and heat for 2...

Embodiment 2

[0012] The rest are the same as in Example 1, add 500ml of 30% acrylic acid aqueous solution, 170ml of pure acrylic acid liquid, heat in a microwave oven with low heat for 2 minutes, and heat with medium fire for 10 minutes, the obtained composite film alkali absorption rate is 650%, corresponding to the blank composite film Alkali absorption rate is 490%, composite film battery C 200 / C 8 =91.2%, C 400 / C 8 =86.2%, while C 200 / C 8 =88.5%, C 400 / C 8 = 78.6%, the self-discharge rate of the composite film battery = 1.13% days -1 , corresponding to blank composite film experiment battery self-discharge rate = 2.22% days -1 .

Embodiment 3

[0014] The rest are the same as in Example 1, add 40% acrylic acid aqueous solution, 120ml of pure acrylic acid liquid, heat in microwave for 4 minutes on low heat, and heat for 15 minutes on medium fire, the obtained composite film has a alkali absorption rate of 940%, which corresponds to the alkali absorption rate of a blank composite film was 493%. Composite film battery C 200 / C 8 = 97%, C 400 / C 8 =95%, and the C corresponding to the blank composite membrane experimental battery 200 / C 8 = 89%, C 400 / C 8 = 78%. Self-discharge rate of composite film battery = 1.13% days -1 , corresponding to blank composite film experiment battery self-discharge rate = 2.22% days -1 .

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
Login to View More

PUM

No PUM Login to View More

Abstract

Salt resin of polymerization crylic acid is polymerized on battery diaphragm made from nylon non-woven fabrics through heating by using microwave oven. The invented battery diaphragm is prepared through steps: rinsing polymerization diaphragm by using hot water, hot alkaline liquor and ultrasonic, drying, punching processes, spraying binder of polyvinyl alcohol on surface as well as compositing another layer of diaphragm made from non-woven fabrics of polypropylene by rolling procedure. The invention solves issue of shortened lifetime, lowered capacity and dynamic performance caused by dried electrolyte in alkaline battery. The invention also solves magnification discharge and lowered voltage platform. Thus, the battery diaphragm provides better performance, low cost and simple method for manufacturing alkaline battery.

Description

technical field [0001] The present invention relates to a method for manufacturing an alkaline battery diaphragm. Background technique [0002] Currently used Ni-MH, Ni-Cd, Zn-MnO 2 For alkaline batteries, the capacity and power performance of the poor liquid sealed battery and the shortened life due to the dry electrolyte have not been completely solved, especially the power of the Ni-MH power battery requires that the electrolyte quantity is relatively stable, and the diaphragm absorbs liquid. Quantity and liquid retention are one of the main ways to solve this problem. Chinese patent No. 96195692.5 discloses the title "fibrillated fiber and its production method and the production method of non-woven fabric containing fibrils", the method improves the process from raw materials, so that the conventional 1-denier vinylon fiber absorbs Alkali rate is raised to 2.2g / g by 0.5g / g; No. 94103569.7 of another Chinese patent discloses the method entitled " the method for the bat...

Claims

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/14
CPCY02E60/12Y02E60/10
Inventor 刘朋军
Owner 刘朋军