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Manufacturing method of lead-acid battery negative grid

A technology of lead-acid batteries and manufacturing methods, applied in the direction of electrode carriers/collectors, etc., can solve the problems of increased number of parts, reduced reliability, cumbersome processes, etc., to reduce the scrap rate, ensure the strength of the grid, and ensure the quality of electroplating Effect

Active Publication Date: 2015-10-07
ZIBO TORCH ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of electroplating lead on the surface of the copper expanded mesh, various treatment solutions in the electroplating process will remain in the frame of the copper expanded mesh and the bottom of the copper clad, causing partial missing plating and resulting in waste products of the grid. Since the frame of the grid is copper, in order to eliminate positive The hidden danger of short circuit of the negative electrode in the frame, when assembling the electrode group, it is necessary to add a frame sheath made of non-conductive material, the number of parts increases, the process is cumbersome, and the reliability is reduced

Method used

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  • Manufacturing method of lead-acid battery negative grid

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Effect test

Embodiment 1

[0019] The manufacturing method of the lead-acid storage battery negative grid comprises the following steps:

[0020] a. Pull the copper plate into a mesh shape to form a copper expanded mesh 1, and cut the copper expanded mesh 1 into a rectangular structure;

[0021] b. Place the copper expanded mesh 1 in the mold, then heat the lead-antimony alloy to 400°C and inject it into the mold cavity to form the copper expanded mesh 1 with the lugs 2;

[0022] c. Electroplate lead on the surface of the copper expanded mesh 1 with the plate lug 2, and form a layer of lead plating layer with a thickness of 5 μm on the surface of the copper expanded mesh 1;

[0023] d. Place the lead-plated copper expanded mesh 1 in the mold, inject polyvinyl chloride plastic at the other end of the copper expanded mesh 1 in the width direction and both ends in the length direction, and the injection molding temperature is 260° C. to form a plastic frame 3 .

[0024] After the plastic frame 3 is inject...

Embodiment 2

[0026] The manufacturing method of the lead-acid storage battery negative grid comprises the following steps:

[0027] a. Pull the copper plate into a mesh shape to form a copper expanded mesh 1, and cut the copper expanded mesh 1 into a rectangular structure;

[0028] b. Place the copper expanded mesh 1 in the mold, then heat the lead-calcium alloy to 500°C and inject it into the mold cavity to form the copper expanded mesh 1 with the lugs 2;

[0029] c. Electroplate lead on the surface of the copper expanded mesh 1 with the plate lug 2, and form a layer of lead plating layer with a thickness of 25 μm on the surface of the copper expanded mesh 1;

[0030] d. Place the lead-plated copper expanded mesh 1 in the mold, inject polyvinyl chloride plastic at the other end of the copper expanded mesh 1 in the width direction and both ends in the length direction, and the injection molding temperature is 330° C. to form a plastic frame 3 .

[0031] After the plastic frame 3 is inject...

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Abstract

The invention relates to a manufacturing method of a lead-acid storage battery negative grid, and the manufacturing method comprises the following steps of a, stretching a copper plate to be reticulate so as to form copper stretch metal, and tailoring the copper stretch metal into a rectangular structure; b, pouring lead alloy on one end of the copper stretch metal to form a lug; c, electroplating lead on the surface of the copper stretch metal with the lug, and forming a lead-plated layer on the surface of the copper stretch metal; and d, carrying out the injection molding on the other end of the width direction and two ends of the length direction of the copper stretch metal to form a plastic frame. By adopting the manufacturing method, after the copper stretch metal is stretched, the operation for curling the frame is not needed; after a copper frame is removed and the molded frame is adopted for the copper stretch metal, no conditioning fluid remains in the lead electroplating process, so that the electroplating quality is guaranteed, and the rejection rate is reduced; and due to the adoption of the plastic frame, the strength of the grid can be guaranteed, the short-circuit potential danger of the negative electrode and the positive electrode can be eliminated, and components such as a frame protection sleeve are not needed.

Description

technical field [0001] The invention relates to a method for manufacturing the negative grid of a lead-acid storage battery. Background technique [0002] Lead-acid batteries are generally composed of battery tanks, positive plates, negative plates, separators, terminals, electrolyte and other parts, especially the positive plates and negative plates play a vital role in the capacity and life of the battery. The positive plate and the negative plate are respectively composed of positive and negative grids and positive and negative active materials, and the positive and negative grids are generally made of lead alloy. Since the density of copper is lower than that of lead, and its electrical conductivity is higher than that of lead, drawing copper into a grid can improve the specific energy and high-current discharge performance of the battery. However, copper is easily soluble in sulfuric acid solution to form copper sulfate, which has a great impact on battery performance....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/73
CPCY02E60/10
Inventor 张梦颖吴涛丁广波董书岭赵妮
Owner ZIBO TORCH ENERGY
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