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Preparation method of lithium battery composite terminal post

A lithium battery and pole technology, which is applied in the field of preparation of composite materials for lithium battery poles, can solve the problems of equipment normal operation, voltage instability, voltage hysteresis, etc., to alleviate the primary lithium battery voltage hysteresis, stabilize the voltage, The effect of improving the response rate

Inactive Publication Date: 2010-12-29
西安华泰有色金属实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, most of the central pole materials of primary lithium batteries are 4J28 Kovar alloy materials. This material has a high resistivity, which can easily cause a delay in the battery voltage response rate and excessive power consumption. Especially in large-capacity batteries, it is easy to The phenomenon of voltage lag and voltage instability will affect the response rate of electrical equipment and affect the normal operation and use of equipment
In order to solve this problem, engineers in the field of batteries have proposed that the central pole of a lithium battery should be made of low-resistivity metals such as copper or aluminum, but in the sealing process of an insulator for a lithium battery, the central pole of these materials and The sealing strength and airtightness of glass are poor, which cannot meet the needs of primary lithium batteries for glass-sealed insulators

Method used

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  • Preparation method of lithium battery composite terminal post
  • Preparation method of lithium battery composite terminal post
  • Preparation method of lithium battery composite terminal post

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Determine the composite ratio of the two materials according to the ratio of the cross-sectional area of ​​the inner core pure copper rod to the external 4J50 cross-sectional area;

[0028] 2) Choose 4J50 pipe material with outer diameter Φ26 and inner hole Φ12, immerse in metal cleaning agent solution with a concentration of 3-5% to remove oil, soak for 10 minutes, rinse with clean water; adjust the volume concentration according to the volume ratio of 15:4:20 30% hydrogen peroxide H 2 o 2 1. Hydrochloric acid Hcl with a density of 1.19 and water are prepared into a polishing solution at room temperature, and the 4J50 pipe material is immersed for 60 seconds to remove the epidermal oxide;

[0029] 3) For the scraping process, select the tool steel scraping mold according to the inner diameter of the 4J50 pipe material, see figure 2 , scrape the inner wall once, with a scraping thickness of 0.07mm, until the new substrate on the inner wall is exposed;

[0030] 4)...

Embodiment 2

[0037] 1) Determine the composite ratio of the two materials according to the ratio of the cross-sectional area of ​​the inner core pure copper rod to the external 4J50 cross-sectional area;

[0038] 2) Select the 4J50 pipe material with an outer diameter of Φ24 and an inner hole of Φ10, and immerse it in a metal cleaning agent solution with a concentration of 3-5% to remove oil. After soaking for 20 minutes, rinse it with clean water; 30% hydrogen peroxide H 2 o 2 1. Hydrochloric acid Hcl with a density of 1.19 and water are prepared into a polishing solution at room temperature, and the 4J50 pipe material is immersed for 40 seconds to remove the epidermal oxide;

[0039] 3) The scraping process, according to the inner diameter of the 4J50 pipe material, select the tool steel scraping mold, and scrape the inner wall once, with a scraping thickness of 0.05mm, until the new substrate on the inner wall is exposed and leaked;

[0040] 4) Insert the turned TU2 pure copper rod in...

Embodiment 3

[0047] 1) Determine the composite ratio of the two materials according to the ratio of the cross-sectional area of ​​the inner core pure copper rod to the external 4J50 cross-sectional area;

[0048] 2) Select the 4J50 pipe material with an outer diameter of Φ22 and an inner hole of Φ8, and immerse it in a metal cleaning agent solution with a concentration of 3-5% to remove oil. After soaking for 15 minutes, rinse it with clean water; 30% hydrogen peroxide H 2 o 2 1. Hydrochloric acid Hcl with a density of 1.19 and water are prepared into a polishing solution at room temperature, and the 4J50 pipe material is immersed for 50 seconds to remove the epidermal oxide;

[0049]3) The scraping process, according to the inner diameter of the 4J50 pipe material, select the tool steel scraping mold to scrape the inner wall once, with a scraping thickness of 0.1mm, until the new substrate on the inner wall is exposed;

[0050] 4) Insert the turned TU2 pure copper rod into the 4J50 pipe...

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Abstract

The invention relates to the technical field of lithium battery preparation, in particular to a preparation method of a lithium battery composite terminal post, which is characterized by comprising the following steps: firstly, determining the composite ratio of two materials; secondly, immerging 4J50 tubing into washing agent for removing oil and removing surface oxide under normal temperature; thirdly, performing the scraping procedure until new basal body on the inner wall is bare; fourthly, embedding a pure copper rod into the 4J50 tubing to tightly match for preparing a charge bar; fifthly, extruding the tightly matched charge bar under the condition of 900-950 DEG C; sixthly, annealing the extruded charge bar; seventhly, repeating the extrusion process of the step 5 until reaching the size required by a colddrawing procedure; eighthly, repeating the annealing process of the step 6; and ninthly, colddrawing multiple times to obtain the composite terminal post of which the outer diameter Phi is 2.0 when the section ratio is 5:1. The invention can relieve voltage hysteresis of a primary lithium battery, and has the advantages of stabilizing the voltage and improving the response speed rate of the titanium voltage.

Description

technical field [0001] The invention relates to the technical field of lithium battery preparation, in particular to a preparation method of a composite material for lithium battery poles. Background technique [0002] The primary lithium battery is currently the battery with the highest energy among practically used batteries in the world. It is widely used in military, aerospace, aviation fields and various weapons and equipment, and is also widely used in various civilian equipment. At present, most of the central pole materials of primary lithium batteries are 4J28 Kovar alloy materials. This material has a high resistivity, which can easily cause a delay in the battery voltage response rate and excessive power consumption. Especially in large-capacity batteries, it is easy to The phenomenon of voltage lag and voltage instability will affect the response rate of electrical equipment and affect the normal operation and use of equipment. In order to solve this problem, en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/30H01M50/564
CPCY02E60/12Y02E60/10
Inventor 赵红刚冯生冯庆杨文波任利娜郭稳尚
Owner 西安华泰有色金属实业有限责任公司
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