A colloidal power battery casting welding flux and preparation method thereof

A power battery and flux technology, which is applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of poor fusion performance of flux casting and welding, flammability and corrosion, and poor compatibility of alloys, etc., to achieve no wear. The effects of penetrating corrosion, welding surface gloss, and uniform thickness of busbars

Inactive Publication Date: 2015-10-21
无锡华燕新电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two types of fluxes used in domestic casting and welding: 1. Oil-based flux, which has a good effect on alloy solidification and solidification, but is flammable and corrosive; 2. Water-based preparation This kind of water-based flux is good in flame retardancy, but the alloy compatibility is poor during casting and welding
However, the solder flux produced above has poor casting and welding fusion performance, and lead spatter causes short circuit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 5% of dimethylol butyric acid, 5% of halogen-free active agent (ST-200), 3% of tolyl benzotriazole (TTA), 2% of ethanol and 85% of the ionized water was sampled, and after sampling, it was added to a 50L stainless steel kettle at one time, stirred at a temperature of 25°C and a stirring speed of 150rpm for 15 minutes; then stirred at a temperature of 39°C and a stirring speed of 500rpm for 0.5h to obtain The colloidal power battery casting welding flux proposed by the invention.

Embodiment 2

[0021] 8% of dimethylol butyric acid, 5% of halogen-free active agent (ST-200), 5% of tolyl benzotriazole (TTA), 2% of butanol and 80% deionized water was sampled, and after sampling, it was added to a 50L stainless steel kettle at one time, stirred at a temperature of 25°C and a stirring speed of 200rpm for 15min; then stirred at a temperature of 42°C and a stirring speed of 600rpm for 1h to obtain The colloidal power battery casting welding flux proposed by the invention.

Embodiment 3

[0023] 10% of dimethylol butyric acid, 10% of halogen-free active agent (ST-200), 5% of tolyl benzotriazole (TTA), 5% of ethanol and 70% of ionized water was sampled, and after sampling, it was added to a 50L stainless steel kettle at one time, stirred at a temperature of 25°C and a stirring speed of 250rpm for 5 minutes; then stirred at a temperature of 45°C and a stirring speed of 700rpm for 1 hour to obtain this The colloidal power battery casting welding flux proposed by the invention.

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PUM

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Abstract

The invention discloses colloid power battery cast-weld soldering flux and a manufacturing method of the colloid power battery cast-weld soldering flux, and belongs to the field of soldering flux. The soldering flux is composed of, by weight, 5-10 parts of organic acid activating agents, 5-10 parts of surface active agents, 3-5 parts of water-soluble corrosion inhibiter, 2-5 parts of organic solvents and 70-85 parts of deionized water. The soldering flux is applicable to various alloy polar plates, can effectively isolate air in the welding process, promotes humidifying of solder on base metal, has effects of removing oxidized films and reducing tension on the surface of the solder, is good in cast-weld fusion performance and free of false solder, lead splashing and short circuits, small in use amount and free of poison. Besides, the organic water-soluble colloid power battery cast-weld soldering flux is high in expansion rate, good in anti-corrosion performance, large in surface insulation resistance and smooth in welding surface.

Description

Technical field: [0001] The invention relates to the field of flux, in particular to a colloidal power battery casting flux and a preparation method thereof. Background technique: [0002] Flux is a solvent used in battery casting and welding. It is a chemical substance that promotes welding. In the casting and welding process of batteries, it can help the connection between the plate and the bus bar to be stronger and more beautiful, and increase the discharge of the battery. It is an indispensable auxiliary material to improve the performance and improve the quality of the battery. [0003] At present, there are two types of fluxes used in domestic casting and welding: 1. Oil-based flux, which has a good effect on alloy solidification and solidification, but is flammable and corrosive; 2. Water-based preparation This kind of water-based flux is good in flame retardancy, but the alloy compatibility is poor during casting and welding. However, the soldering flux produced a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
CPCB23K35/362
Inventor 何治堂史仲华路建良张婷储浩芳许虎城
Owner 无锡华燕新电源有限公司
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