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Lead acid battery flux and preparation method and application thereof

A lead-acid battery and flux technology, used in welding equipment, welding media, manufacturing tools, etc., can solve the problems of lead-acid battery grid and busbar welding quality, poor compatibility of tabs, corrosion of welding points, etc. Achieving good busbar welding effect, low production cost and less residue after welding

Inactive Publication Date: 2016-09-21
ZHEJIANG TIANNENG POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of water-based flux has good flame retardancy, but its compatibility with tabs is poor, and it is easy to cause virtual soldering, false soldering, etc.
In addition, the activators used in these water-based fluxes are all high-boiling-point acids, which are easy to remain after welding, thereby corroding the solder joints and seriously affecting the welding quality of lead-acid battery grids and bus bars.

Method used

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  • Lead acid battery flux and preparation method and application thereof
  • Lead acid battery flux and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of lead-acid storage battery soldering flux, the mass percent is composed of:

[0044] Alcohol 5%

[0045] Phosphoric acid 65%

[0046] The rest is water.

[0047] Take alcohol, phosphoric acid and water according to the mass ratio; mix the taken alcohol, phosphoric acid and water together, and stir at 100rpm for 30min.

Embodiment 2

[0049] A kind of lead-acid storage battery soldering flux, the mass percent is composed of:

[0050] Alcohol 8%

[0051] Phosphoric acid 55%

[0052] The rest is water.

[0053] Take alcohol, phosphoric acid and water according to the mass ratio; mix the taken alcohol, phosphoric acid and water together, and stir at 200rpm for 20min.

Embodiment 3

[0055] A kind of lead-acid storage battery soldering flux, the mass percent is composed of:

[0056] Alcohol 12%

[0057] Phosphoric acid 60%

[0058] The rest is water.

[0059] Take alcohol, phosphoric acid and water according to the mass ratio; mix the taken alcohol, phosphoric acid and water together, and stir at 300rpm for 15min.

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PUM

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Abstract

The invention discloses a lead acid battery flux. The lead acid battery flux comprises the following components by mass percent: 5 to 20% of alcohol and 50 to 80% of phosphoric acid, and the balance being water. According to the lead acid battery flux, oxides on a tap can be effectively removed, the battery has a good busbar welding effect, the battery welding quality is improved, the defective problems of false welding, wrap welding and scaling of a product are improved, the welding defect rate is effectively decreased, residues after welding are less, the phenomenon that a battery is scrapped due to the situation that the flux adheres to a polar plate and a partition plate is eliminated, raw materials are convenient to obtain and prepare, and compared with a flux which can be purchased in the market, the flux has the advantage that the production cost is relatively low.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a flux for lead-acid batteries and its preparation method and application. Background technique [0002] Lead-acid batteries are assembled in units of pole groups. The pole group is composed of multiple positive and negative plates and separators. In each pole group, the tabs of the same pole are cast and welded with the bus bar to form the positive bus bar and the negative bus bar. Row. With the continuous innovation of the lead-acid battery welding production process, the previous manual welding mode has been innovated into the casting welding production mode. The innovation of the process puts forward higher requirements for product quality. The casting welding battery has high production efficiency and many control links. Therefore, There are also more places where bad problems occur, mainly reflected in the phenomena of plate false welding, cladding, and chippin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B22D19/04
CPCB23K35/3601B22D19/0081B22D19/04B23K35/362
Inventor 张林山陈建丰杨滔
Owner ZHEJIANG TIANNENG POWER ENERGY
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