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Preparation method of negative plate of chemical battery

A chemical battery and negative electrode technology, applied in the direction of alkaline battery electrodes, etc., can solve the problems of low automation, good flexibility of the electrode, and high automation, so as to improve the utilization rate, increase the pass rate, and reduce the tightness. Effect

Active Publication Date: 2011-01-12
先进储能材料国家工程研究中心有限责任公司
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AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the problems in the prior art that the degree of automation is not high, there is a certain gradient in the thickness of the pole piece, cracks or even breakage are easy to occur during the winding process, and higher requirements are put forward for the equipment. A new preparation method of chemical battery negative electrode sheet overcomes the defects in the prior art. This method has low requirements on equipment, high degree of automation and good flexibility of the electrode sheet

Method used

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  • Preparation method of negative plate of chemical battery
  • Preparation method of negative plate of chemical battery
  • Preparation method of negative plate of chemical battery

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Embodiment 1

[0026] Such as figure 1 The structure of the AA2500HC battery shown is divided into negative electrode scraping surface 1, negative electrode front section 2, positive electrode tail end 3, winding needle 4, separator 5, and positive electrode front section 6. The positive electrode, the separator, and the negative electrode are stacked and wound on each other. The innermost circle of the negative electrode is close to the winding core, and the last circle is close to the steel shell.

[0027] The production method of the positive plate: the commercial spherical nickel hydroxide and cobalt powder are mixed in a ratio of 95:5, mixed evenly, then filled into the foamed nickel, rolled and cut into 95mm×43mm×0.68mm , The total amount of active material contained in the positive electrode is 10.0g.

[0028] The preparation of the negative electrode sheet includes slurry mixing, continuous sizing, drying, rolling, automatic welding of tabs, automatic gluing, and cutting.

[0029] ...

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Abstract

The invention relates to a preparation method of a negative plate of a chemical battery, which comprises the steps of sizing, drying and rolling, wherein the sizing step is continuous, double-side sizing and single-side sizing are operated alternatively, and the single-side sizing is adopted on a surface which has no corresponding positive surface; and that the double-side sizing and the single-side sizing are operated alternatively refers to that the double-side sizing is adopted on a section of the negative plate, the single-side sizing is adopted on a next section, then the double-side sizing is adopted again, and the cycle is repeated.

Description

technical field [0001] The invention relates to a preparation method of a negative electrode sheet of a chemical battery. Background technique [0002] The preparation method of the traditional chemical battery negative plate is as follows: the negative electrode slurry or powder is coated or filled on the negative electrode base, rolled, cut and then entered into the assembly process. In assembly, when the winding method is adopted, the innermost circle of the negative electrode is close to the winding core and the outermost circle is close to the cylinder, and there is no positive pole corresponding to it; There is no positive electrode corresponding to one side of the casing. Since the reaction of the positive and negative electrodes of the battery is a liquid-solid interface reaction, ions are transferred between the positive and negative electrodes with the smallest distance or the smallest resistance. , and its active substance utilization rate is relatively low. "C...

Claims

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Application Information

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IPC IPC(8): H01M4/26H01M4/28
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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