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Lead pipe of lead-acid battery for starting automobile and manufacturing method

A technology for lead-acid batteries and car starting, which is applied to battery pack parts, circuits, electrical components, etc. It can solve the problems of lack of material in thread parts, shrinkage and whitening, and low appearance finish, and achieve the effect of compact internal structure

Active Publication Date: 2011-06-01
FENGFAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead pipes used for lead-acid battery terminals have always been produced by natural gravity casting method. The lead pipes produced by this traditional method have irregular shape and poor appearance finish. During the casting process, there will also be problems such as shrinkage and whitening. The above defects will not only affect the appearance quality of the battery, but also cause acid creeping problems in the terminals during the use of the battery, which will affect the service life of the battery. Therefore, the lead pipe Production also requires the introduction of new technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: The wall thickness of the lead pipe is 2 mm, and the chemical composition of the material is as follows: Sb: 2.0%; Sn 0.3%; As 0.25%; Bi 0.02%, and the balance is Pb. The main process parameters of die casting are as follows: alloy liquid temperature: 360°C, nozzle temperature: 365°C, gooseneck temperature: 365°C, injection time: 1.0s cooling time: 2.0s return time: 1.0s specific pressure 60% working pressure 130bar.

Embodiment 2

[0024] Example 2: The wall thickness of the lead pipe is 2 mm, and the chemical composition of the material is as follows: Sb: 4.34%; Sn 0.03%; As 0.14%; Bi 0.0074%, and the balance is Pb. The main process parameters of die casting are as follows: alloy liquid temperature: 375°C, nozzle temperature: 370°C, gooseneck temperature: 370°C, injection time: 1.2s cooling time: 0.8s return time: 0.8s specific pressure 80% working pressure 100bar.

Embodiment 3

[0025] Example 3: The wall thickness of the lead pipe is 2.8 mm, and the chemical composition of the material is as follows: Sb: 3.5%; Sn 0.06%; As 0.15%; Bi 0.012%, and the balance is Pb. The main process parameters of die casting are as follows: alloy liquid temperature: 350°C, nozzle temperature: 360°C, gooseneck temperature: 360°C, injection time: 1.5s cooling time: 2s return time: 1.5s specific pressure 85% working pressure 120bar .

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PUM

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Abstract

The invention relates to a lead pipe of a lead-acid battery for starting an automobile and a manufacturing method, used for solving the manufacturing problem of the lead pipe for the lead-acid battery. In the technical scheme, the lead pipe is manufactured by a die-casting process and comprises the following chemical components in percentage by weight: 2.0-8.0 percent of Sb, 0.01-0.3 percent of Sn, 0.1-0.25 percent of As, less than or equal to 0.2 percent of Bi and the balance of Pb. In the process parameters of the method, the gooseneck temperature is 340-400 DEG C, the nozzle temperature is 340-400 DEG C, the specific pressure is 60-95 percent, the injecting time is 1.0 second to 3.0 seconds, the cooling time is 1.0 second to 3.0 seconds, the retuning time is 1.0 second to 3.0 seconds, and the stamping pressure is 60-140bar. According to the invention, the optimized combination of the die-casting process parameters is determined through tests, the best process for producing the die-casting lead pipe is formed, and the problems of loose internal structure of the lead pipe, air bubble generation during roasting, and the like are solved.

Description

technical field [0001] The invention relates to a preparation method of a storage battery, in particular to a lead tube of a lead-acid storage battery used for starting an automobile and a production method thereof, belonging to the technical field of storage batteries. Background technique [0002] As the starting power source of automobiles, lead-acid batteries, with the deepening of research and the accumulation of use experience in the past 20 years, have made great progress in their performance, stability, life and other characteristics, and their application fields have become more extensive. Lead pipes used for lead-acid battery terminals have always been produced by natural gravity casting method. The lead pipes produced by this traditional method have irregular shape and poor appearance finish. During the casting process, there will also be problems such as shrinkage and whitening. The above defects will not only affect the appearance quality of the battery, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/30B22D17/08
CPCY02E60/12Y02E60/10
Inventor 席春青卢迎春毕晓军李树玉付永起夏国强
Owner FENGFAN