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Method for cast-welding light metal negative plate grid lead storage battery busbar

A metal negative electrode and lead-acid battery technology, which is applied in lead-acid batteries, lead-acid battery construction, battery pack components, etc., can solve the problems of cast-welded bus bars with false welding, inability to weld, false welding, etc.

Pending Publication Date: 2021-04-30
SHANGHAI INSTITUTE OF TECHNOLOGY
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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 provide a method for casting and welding light-weight metal negative grid lead-acid battery busbars, which solves the problem of virtual welding and false welding of lightweight metal grids during the production and assembly of battery production lines. , or even unable to weld and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for casting and welding light-duty metal negative grid lead storage battery busbars, specifically comprising the following steps:

[0035] (1) For the 6-DZM-20 type lead-acid battery, design a 20Ah expanded mesh lead-acid battery negative grid. The alloy composition of the grid base material contains 0.6-7 parts of Sn, Pb, and P, and the rest is Cu;

[0036] (2) The tin content of the electroplated lead-tin coating is 9%;

[0037](3) Now the 20Ah expanded tin bronze negative electrode grid is plated with a lead-tin alloy coating as a whole according to the above requirements, and the thickness of the coating is 54 μm; Make the tabs in the lead-tin electroplating system plating solution to perform lead-tin electroplating again, and the lead-tin alloy coating at the tabs is 89 μm;

[0038] (4) Coat the active material on the treated tin bronze negative electrode expanded mesh grid, and finally assemble it into an electrode group through steps such as curing, spl...

Embodiment 2

[0044] A method for casting and welding light-duty metal negative grid lead storage battery busbars, specifically comprising the following steps:

[0045] (1) For the 6-DZM-100 type lead-acid battery, design a 100Ah expanded mesh lead-acid battery negative electrode grid. The grid base material component contains 1-4 parts of Pb and Zn, and the rest is Cu;

[0046] (2) The tin content of the electroplated lead-tin coating is 6.3%;

[0047] (3) Now the 20Ah expanded tin bronze negative electrode grid is plated with a lead-tin alloy coating as a whole according to the above requirements, and the thickness of the coating is 60 μm; Make the tabs in the lead-tin electroplating system plating solution to perform lead-tin electroplating again, and the lead-tin alloy coating at the tabs is 94 μm;

[0048] (4) Coat the active material on the treated tin bronze negative electrode expanded mesh grid, and finally assemble it into an electrode group through steps such as curing, splitting...

Embodiment 3

[0054] A method for casting and welding light-duty metal negative grid lead storage battery busbars, specifically comprising the following steps:

[0055] (1) For the 6-DZM-20 type lead-acid battery, design the negative electrode grid of 20Ah expanded mesh lead-acid battery. Cu;

[0056] (2) Lead-plating the entire negative grid;

[0057] (3) Now the 20Ah expanded tin bronze negative electrode grid is plated with a lead-tin alloy coating as a whole according to the above requirements, and the thickness of the coating is 65 μm; Make the tabs in the lead-tin electroplating system plating solution to conduct lead-tin electroplating again, and the lead-tin alloy coating at the tabs is 98 μm;

[0058] (4) Coat the active material on the treated tin bronze negative electrode expanded mesh grid, and finally assemble it into an electrode group through steps such as curing, splitting, and brushing; Coating flux, the flux configuration is: 11 parts of 50% phosphoric acid solution, 4 ...

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PUM

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Abstract

The invention relates to a method for cast-welding a light metal negative plate grid lead storage battery busbar. The method is characterized in that a light metal negative plate grid is subjected to cast-welding after being subjected to electroplating and / or tinning treatment. Compared with the prior art, the method has the advantages that the phenomena of insufficient soldering and false soldering of the light metal applied to a lead-acid storage battery grid are avoided, the busbar and a tab are better fused, the internal resistance of the formed battery is 5.96-8.78 m omega, and industrialization of corresponding products in actual production is achieved while the light metal grid is light and high in energy.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery preparation, in particular to a method for casting and welding light-duty metal negative grid lead-acid battery busbars. Background technique [0002] Because of its safety, reliability, low price, and almost all waste batteries can be recycled, lead-acid batteries are currently the batteries with the largest production volume and market. However, due to its low energy density (about 30-40kW / Kg), many application fields are limited, so improving its energy density is an important direction of current research and development. Analyzing the composition of lead-acid batteries, it is not difficult to find that one of the most important reasons for the low specific energy is the large amount of inactive lead (mainly lead-based alloy grid material). Therefore, the development of lightweight grid materials for lead-acid batteries has always been a very important research topic. [0003] The ...

Claims

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Application Information

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IPC IPC(8): H01M50/505H01M50/514H01M50/516H01M10/12
CPCH01M10/12Y02E60/10Y02P70/50
Inventor 王振卫杨彤
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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