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Battery sealing cover, manufacturing method thereof and battery

A sealing cover and battery technology, applied in the direction of battery cover/end cover, sealing material, battery pack components, etc., can solve problems such as poor connection strength and sealing, poor corrosion resistance, battery failure, etc., to ensure reliability and improve Airtightness, the effect of reducing internal resistance

Inactive Publication Date: 2018-06-08
杜欢阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a battery sealing cover, which solves the problems of poor connection strength and sealing performance of the organic insulating sealing medium between the positive pole pole and the cover plate of the existing battery cover assembly, and its poor corrosion resistance and easy aging; When glass is used as a sealing medium, the chemical reaction caused by adding electrolyte and mixing water vapor causes battery failure

Method used

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  • Battery sealing cover, manufacturing method thereof and battery
  • Battery sealing cover, manufacturing method thereof and battery
  • Battery sealing cover, manufacturing method thereof and battery

Examples

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preparation example Construction

[0046] The present invention also provides a preparation method for the above-mentioned battery sealing cover, comprising the following steps:

[0047]Step S1, cleaning the stainless steel cover plate and the aluminum pole, and then oxidizing the stainless steel cover plate and the aluminum pole to obtain an oxidized stainless steel cover plate and an oxidized aluminum pole; the specific process of oxidation is to heat the stainless steel cover plate to 150-200°C and keep it warm for 20-30 minutes to obtain an oxidized aluminum pole with a stainless steel cover; soak the aluminum pole in nitric acid with a mass concentration of 30-35% for 5-10 minutes, then wash and dry to obtain an oxidized aluminum poles.

[0048] Step S2, covering the pressure-bearing glass on the oxidized aluminum pole, such as Figure 4 As shown, the pressure-bearing glass is placed over the first section of the oxidized aluminum pole, while the lower surface of the pressure-bearing glass is in contact w...

Embodiment 1

[0054] Prepare the battery sealing cover by using phosphate glass as the glass medium, and the specific process is as follows:

[0055] Step S1, cleaning the stainless steel cover plate and the aluminum pole, and then oxidizing the stainless steel cover plate and the aluminum pole to obtain an oxidized stainless steel cover plate and an oxidized aluminum pole; the specific process of oxidation is to heat the stainless steel cover plate to 150°C and keep it warm for 20 minutes to obtain an oxidized aluminum pole with a stainless steel cover; soak the aluminum pole in nitric acid with a mass concentration of 30% for 5 minutes, then wash with water and dry to obtain an oxidized aluminum pole.

[0056] In step S2, the pressure-bearing glass and the sealing glass are prepared by using phosphate glass, and the pressure-bearing glass is placed on the oxidized aluminum pole, such as Figure 4 As shown, the pressure-bearing glass is placed over the first section of the oxidized aluminu...

Embodiment 2

[0061] The battery sealing cover is prepared by using lead glass as a glass medium, and the specific process is as follows:

[0062] Step S1, cleaning the stainless steel cover plate and the aluminum pole, and then oxidizing the stainless steel cover plate and the aluminum pole to obtain an oxidized stainless steel cover plate and an oxidized aluminum pole; the specific process of oxidation is to heat the stainless steel cover plate to 180°C and keep it warm for 25 minutes to obtain an oxidized aluminum pole with a stainless steel cover; soak the aluminum pole in nitric acid with a mass concentration of 32% for 8 minutes, then wash with water and dry to obtain an oxidized aluminum pole.

[0063] In step S2, lead glass is used to prepare pressure-bearing glass and sealing glass, and the pressure-bearing glass is placed on the oxidized aluminum pole, such as Figure 4 As shown, the pressure-bearing glass is placed over the first section of the oxidized aluminum pole, while the l...

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PUM

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Abstract

The invention discloses a battery sealing cover, a manufacturing method thereof and a battery. The battery sealing cover comprises an aluminum pole column, the aluminum pole column seals a stainless steel cover plate through a glass medium, the glass medium is high-expansion glass and passes through the stainless steel cover plate, the aluminum pole column passes through the glass medium, the aluminum pole column comprises a first section extending into the glass medium and a second section below the glass medium, and the cross-sectional area of the second section of the aluminum pole column is larger than that of the first section. The battery sealing cover solves the problem that an organic insulating sealing medium between a positive pole and a cover plate of the existing battery coverassembly has poor connection strength and sealing performances, has poor aging resistance and is easily aged and solves the problem that the common glass as a sealing medium causes battery failure caused by a chemical reaction of the electrolyte and vapor.

Description

technical field [0001] The invention belongs to the technical field of lithium battery sealing; in particular, it relates to a battery sealing cover, a method for manufacturing the sealing cover, and a battery with the above-mentioned sealing cover. Background technique [0002] Due to the increasingly urgent energy and environmental protection pressure, many countries are competing to develop green energy technologies, among which lithium batteries and supercapacitor batteries are developing most rapidly. Lithium batteries and supercapacitors have the advantages of high energy ratio, light weight, long life, and environmental protection. [0003] The existing lithium battery cap has relatively large internal resistance, and the organic insulating sealing medium has short service life, poor sealing performance, is not resistant to high and low temperatures, and easily leaks electrolyte. Ordinary glass sealing media cannot seal stainless steel and aluminum, and ordinary glas...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/08H01M50/147H01M50/159H01M50/184H01M50/186H01M50/562H01M50/564
CPCH01M50/147H01M50/183Y02E60/10
Inventor 杜欢阳崔漪瑶
Owner 杜欢阳