Method for pretreating copper insert of copper-insert terminal of lead-acid storage battery before casting

A lead-acid battery, copper insert technology, applied in battery pack parts, electrical components, circuits, etc., can solve problems such as battery scrap, acid leakage, copper insert leakage, etc.

Active Publication Date: 2009-12-02
GUANGDONG DYNAVOLT NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after using this kind of copper core embedded pole for a period of time, there will be acid oozing around the copper insert from time to time, that is, the phenomenon of acid mist rising. This is due to the gasification of the acidic electrolyte. The acid mist has strong permeability. Once the interface between the copper insert and the lead alloy seat of the bus bar is not tightly bonded, the acid mist will pass through the wall of the lead alloy seat of the bus bar and enter the interface between the copper insert and the lead alloy sea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Use a cutting tool to generate a pair of "one"-shaped transverse grooves on the side of the cylinder at the lower part of the copper insert;

[0025] (2) Clean the surface of the copper insert obtained in step (1) successively with a metal cleaning agent with a concentration of 5% and a zinc chloride solution with a concentration of 15%, and then put the copper insert into an ethanol solution at 65°C Soak in water for 30 minutes, take out and dry;

[0026] (3) tinning the surface of the copper insert obtained through step (2) cleaning;

[0027] (4) Put the tin-plated copper insert into an oven at 160°C for 25 minutes;

[0028] (5) Take out the copper insert from the oven, use tools such as metal pliers or screws to clamp or lock the copper insert, first immerse it in alcohol-soluble flux for about 2 seconds, then take it out, and then immerse it in 1:1 lead Put it in the tin alloy molten liquid for about 2 seconds, take it out, shake off the pewter that is not fir...

Embodiment 2

[0030] (1) Use a cutting tool to form a pair of "cross" star-shaped grooves on the side of the cylinder at the lower part of the copper insert, and the cross-shaped grooves are vertically parallel to the axis of the copper insert;

[0031] (2) Clean the surface of the copper insert obtained in step (1) successively with a metal cleaning agent with a concentration of 6% and a dilute hydrochloric acid solution with a concentration of 13%, and then put the copper insert into an ethanol solution at 60°C Soak for 20 minutes, remove to dry;

[0032] (3) tinning the surface of the copper insert obtained through step (2) cleaning;

[0033] (4) Put the tin-plated copper insert into an oven at 150°C for 20 minutes;

[0034] (5) Take out the copper insert from the oven, use tools such as metal pliers or screws to clamp or lock the copper insert, first immerse it in alcohol-soluble flux for about 3 seconds, take it out, and then immerse it in 1:1 lead In the tin alloy molten liquid for ...

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Abstract

The invention provides a method for pretreating a copper insert before casting the copper insert of a copper-insert terminal of a lead-acid storage battery in a bus bar lead alloy bush seat, which comprises the following steps: (1) cleaning the surface of the copper insert; (2) tinning the copper insert; (3) preheating the copper insert; and (4) immersing the copper insert in molten lead alloy for a moment, taking the copper insert out, swinging the copper insert to remove lead alloy not firmly adhered to the surface of the lead alloy, immediately placing the copper insert into a cavity of a lead alloy bush seat of a bus bar casting mold, and casting lead alloy. In the pretreatment method, the copper insert casting process can make the joint of the interfaces of the copper insert and the bus bar lead alloy bush seat tight enough to greatly reduce slight leakage around the copper insert during use and prolong the service life of the battery to a maximum degree. The pretreatment method is simple in step and easy in operation, well solves critical problems in battery manufacturing and using industries, and has a great realistic significance.

Description

technical field [0001] The present invention relates to a method for manufacturing battery poles, in particular to a method for manufacturing copper core poles of lead-acid batteries, and more particularly to a method for casting copper inserts of copper core poles on busbar lead alloy sleeves. A method of pre-treating copper inserts before seating. Background technique [0002] The existing electrode terminals for lead-acid batteries include lead poles, copper core embedded poles and stainless steel bolts embedded poles. The copper core embedded pole is a copper insert with a threaded blind hole in the middle, which is cast in the lead alloy socket of the busbar and used as an electrode. This pole has high strength, large contact area, small contact resistance, and easy installation. Strong and easy to use, it is a kind of electrode terminal commonly used in lead-acid batteries in recent years. However, after using this kind of copper core embedded pole for a period of ti...

Claims

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Application Information

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IPC IPC(8): H01M2/30H01M50/505H01M50/543H01M50/564
CPCY02E60/12Y02E60/10
Inventor 陈乐伍
Owner GUANGDONG DYNAVOLT NEW ENERGY TECH CO LTD
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