Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for preparing cylindrical press ring form primary and secondary Zn-Ni battery

A cylindrical and pressure ring technology, applied in two new energy fields, can solve the problems of alkaline zinc-manganese batteries with poor heavy-load performance, poor high-current work performance, and no granulation process, etc., to improve shelf life and conduct electricity Good performance, the effect of reducing the internal resistance of the battery

Inactive Publication Date: 2004-08-18
江苏海四达集团有限公司
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkaline zinc-manganese batteries have poor heavy-load performance, which limits their use in some occasions, such as toy cars, video cameras, digital cameras, mobile communications, laptop computers, etc.
[0003] The cycle life of the secondary alkaline zinc-manganese battery is only dozens of times, the first discharge capacity is much smaller than that of the primary alkaline zinc-manganese battery, and the high-current working performance is poor
[0008] Secondary cylindrical press ring type Zn-Ni battery Japan Sanyo Electric Co, Ltd U.S.P 6235428 (2001.5.22) reported using NiOOH as the positive electrode active material, but did not go through the granulation process
If the two are mixed and pressed directly into positive electrode rings, the ring density will be low, the weight of the rings will be low, and the yield of the pressed rings will be low.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for preparing cylindrical press ring form primary and secondary Zn-Ni battery
  • Process for preparing cylindrical press ring form primary and secondary Zn-Ni battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Preparation of AA size primary Zn-Ni battery

[0023] Weigh 90g of self-made NiOOH powder, 10g of graphite powder, 1g of additive, 0.5g of binder, dry mix for 20 minutes, add 10g of KOH solution with a weight ratio of 38%, and wet mix for 30 minutes. Thickness: 0.2-0.5mm, crushed and pressed into tablets, then crushed and then sieved, the upper sieve is 40 mesh, and the lower sieve is 80 mesh. Store the powder that has passed the upper sieve and the powder that has not passed the lower sieve. The powder that does not pass the upper sieve is crushed and sieved. The powder that passes through the lower sieve is then compressed into tablets to repeat the above process. Measure the particle size distribution and apparent specific gravity of the qualified powder. The apparent specific gravity is 1.68g / cm 3 , The particle size is between 40-200 mesh, 40-60 mesh accounts for 5%, 60-80 mesh accounts for 80%, 80-100 mesh accounts for 10%, and 100-200 mesh accounts ...

Embodiment 2

[0028] Example 2 Preparation of AA-sized secondary Zn-Ni battery

[0029] With β-Ni(OH) 2 90g, graphite powder 10g, additive I 2g, additive II 1g, binding agent 0.5g, dry mix 20 minutes, add weight ratio 38% KOH solution 10g wet mix 30 minutes, other is the same with example 1. The weight of the ring pressed by 2.8g of granulated qualified powder is 2.7g, and the ring height is 12mm. Three rings are put into the steel cylinder and repressed. ) into a negative electrode collector to make a battery, charged with a small current of 100mA, and discharged to 1.0V with a constant current of 200mA. After charging and discharging 3 times, the capacity is about 800mAh.

[0030] The ring strength of ungranulated powder is not good, water will be generated after charging, and the ring will be loose and deformed.

[0031] The present invention is not limited to AA size batteries, and is suitable for cylindrical pressure ring type Zn-Ni primary and secondary batteries of all other spec...

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

PropertyMeasurementUnit
Densityaaaaaaaaaa
Graininessaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a process for preparing cylinder-shaped press ring type primary and secondary Zn-Ni battery, wherein the positive electrode uses NiOOH or Ni(OH)2, graphite, additive, or KOH electrolytic solution as raw material through dry mixing, moisture mixing, sheeting, breaking and screening (which are called granulation process in general) to prepare positive electrode powder, which is then compressed into ring form and loaded into the steel cylinder of the positive electrode current collecting member, while the negative electrode uses Zn, ZnO, additive, adhesive, or KOH electrolytic solution to form grease form negative electrode.

Description

Technical field [0001] The present invention relates to two new energy sources. Background technique [0002] The more popular ones in the market are primary alkaline zinc-manganese batteries. The open circuit voltage is 1.5-1.65V, and the working voltage is S-shaped over time. There is no obvious platform, and the working time is longer at 1.2-1.0V. When the output current is large, the capacity decreases. For example, the AA type discharges for about 60 minutes at 1Ω, which is about 1100mAh, and the same size battery can reach 2300mAh when discharged at 10Ω. Alkaline zinc-manganese batteries have poor heavy-duty performance, which limits their use in certain occasions, such as toy cars, video cameras, digital cameras, mobile communications, laptop computers, and so on. [0003] The cycle life of the secondary alkaline zinc-manganese battery is only dozens of times, the first discharge capacity is much smaller than that of the primary alkaline zinc-manganese battery, and ...

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
IPC IPC(8): H01M6/00H01M10/04
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 高效岳沙永香蒋正治邱德瑜唐琛明沈涛
Owner 江苏海四达集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com