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Method for preparing positive plate of nickel hydrogen battery

A nickel-metal hydride battery and positive electrode technology, which is applied in the direction of alkaline battery electrodes, etc., can solve the problems of difficulty in ensuring the consistency of the electrode sheet, the inability to accurately control the amount of powder, and the low degree of automation, so as to improve the efficiency of powder feeding and avoid battery damage. The risk of short circuit and the effect of reducing the influence of human factors

Active Publication Date: 2012-12-12
先进储能材料国家工程研究中心有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art that the automation degree of the whole process is not high, the efficiency is low, the consistency of the pole pieces is difficult to ensure, the amount of powder feeding cannot be precisely controlled, the efficiency of powder feeding is low, and the floating powder in the powder feeding box is easy to cause Battery short circuit, traditional vertical roller press has high material requirements, inconvenient maintenance, cold roll and other problems

Method used

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  • Method for preparing positive plate of nickel hydrogen battery
  • Method for preparing positive plate of nickel hydrogen battery
  • Method for preparing positive plate of nickel hydrogen battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Roll nickel foam with a specification of 43×1.3mm on the disc 1, pass through the roller 2, and then enter a pair of large rollers 4 for pre-compression. After pre-compression, the thickness of the foam nickel base is 0.95mm. The slurry is brushed by the automatic gluing device 5, and the slurry is mixed by 1 kilogram of water, 0.35 kilogram of adhesive polytetrafluoroethylene, and 0.05 kilogram of conductive agent nickel powder (if a certain concentration of polytetrafluoroethylene emulsion is used) , then the amount of water can be reduced accordingly), and then the mixed powder of the active material and the additive is brushed into the base belt coated with the slurry through the upper powder box 6, and the positive active material is made of commercially available spherical nickel hydroxide Mix with cobalt powder at a ratio of 97:3, mix evenly, and put the powder on the box such as Figure 5 shown. Then immediately enter the hydraulic horizontal roller machine 7 r...

Embodiment 2

[0054] The preparation steps are the same as in Example 1. Before entering the preload, enter the automatic welding nickel wire device laser welding machine 3, weld a nickel wire 28 with a diameter of 0.3 mm on the edge of the base tape, and the other parts are the upper powder position 29. The welding method is laser welding, and the laser welding equipment of a certain company is used. The optical settings are as follows:

[0055]

laser

Spot diameter

(mm)

focal length

(mm)

out of focus

quantity

Nozzle diameter

(mm)

auxiliary gas

optical fiber

100W-SM

5

100

0

5

Ar

[0056] The process parameters are as follows:

[0057] Power (W)

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Abstract

The invention relates to a method for full-automatically preparing a positive plate of a nickel hydrogen battery, which comprises the processes of automatically discharging, automatically feeding and welding a nickel plate, prepressing, gluing, feeding powder, rolling, detecting thickness, softening, automatically welding a nickel wire, automatically rubberizing, automatically splitting, and automatically weighing. The whole process of manufacturing and processing the positive plate is full-automatic, so that the consistency of the positive plate, which is a key factor influencing the consistency of the battery, can be improved; and the method has the advantages of shortening the manufacturing time, saving labor cost, reducing the influence of personal factors, contributing to tracing theproblems of products, along with wide industrial application prospect.

Description

technical field [0001] The invention relates to a method for preparing a positive electrode sheet of a nickel-hydrogen battery, in particular to a fully automatic method for preparing the positive electrode sheet of a nickel-hydrogen battery. Background technique [0002] Disclosed in the existing technical data are some preparation methods of positive electrode materials of batteries and the devices adopted therefor, for example: CN2927328 discloses a kind of full-automatic lithium-ion battery sheet making machine, and it comprises: automatic feeding device, encapsulation and feeding Tab device, tab and pole piece combination device, fixed-length traction device, pole piece gluing device, finished product processing device, electrical part, and multiple rollers that carry the movement of the pole piece; the automatic unwinding device is a circular roll of material disc; the rubber-covering and tab-feeding device sequentially includes a material roll equipped with tabs, a gu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/26
CPCY02E60/124Y02E60/10
Inventor 钟发平何策衡陈风
Owner 先进储能材料国家工程研究中心有限责任公司
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