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Corrosion-resistant washer, and secondary battery comprising same

A secondary battery, corrosion-inhibiting technology, used in small-sized batteries/battery packs, battery pack parts, battery boxes/jackets, etc. The effect of improving safety

Active Publication Date: 2014-07-30
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if figure 1 As shown, there is a problem that the crimping of the cylindrical battery is rusted in a high-temperature and high-humidity environment, so improvement is required.

Method used

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  • Corrosion-resistant washer, and secondary battery comprising same
  • Corrosion-resistant washer, and secondary battery comprising same
  • Corrosion-resistant washer, and secondary battery comprising same

Examples

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Embodiment 1

[0066]

[0067] Under normal temperature and pressure conditions, the NaNO 2 After being uniformly mixed, pulverization is uniformly performed until a uniform shape is obtained. The above NaNO that will be pulverized 2 Mixed with molten polypropylene resin to obtain a vapor phase corrosion inhibitor (VCI).

[0068] Then, after granulating the gas-phase corrosion inhibitor, the gas-phase corrosion inhibitor in particle form was obtained by cooling to normal temperature. Mix the thus-obtained granular gas-phase corrosion inhibitor with polypropylene resin as the base resin at a ratio of about 0.5:10, and extrude at a specified temperature to obtain an extruded sheet, and punch the above-mentioned extruded sheet using a die Planted in the shape of a washer, a corrosion-inhibiting washer is manufactured.

[0069]

[0070] After manufacturing the upper end cap and cylindrical can using Ni-plated SPCE (cold-rolled steel plate), and installing the electrode assembly in the cyl...

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Abstract

According to one embodiment of the present invention, provided are a corrosion-resistant washer for a secondary battery, and a secondary battery comprising same, wherein the corrosion-resistant washer is characterized by including a volatile corrosion inhibitor (VCI) and a base resin. The corrosion-resistant washer of the present invention can improve the stability in a battery by preventing the occurrence of corrosion or the occurrence of rust in the crimping part of a battery cell.

Description

technical field [0001] The present invention relates to a corrosion-inhibiting gasket containing a vapor phase corrosion inhibitor (VCI: volatile corrosion inhibitor) and a secondary battery including the corrosion-inhibiting gasket. Background technique [0002] With the increase in technological development and demand for mobile devices, the demand for secondary batteries as energy sources has also increased dramatically. And, among such secondary batteries, lithium secondary batteries having high energy density and high discharge voltage have been studied a lot, and have been popularized and widely used. [0003] According to the shape of the battery case, the secondary battery is divided into: cylindrical battery and square battery, the electrode assembly is placed in a cylindrical or square metal can; and pouch-shaped battery, the electrode assembly is placed in an aluminum laminated sheet Inside the pouch case. [0004] Generally, a secondary battery includes: a can;...

Claims

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Application Information

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IPC IPC(8): H01M2/32H01M2/34H01M2/10H01M50/571H01M50/107H01M50/167H01M50/184H01M50/186H01M50/191H01M50/193H01M50/195H01M50/572
CPCH01M50/24H01M50/571H01M50/598H01M50/193H01M50/186H01M50/167H01M50/191H01M50/107H01M50/195H01M50/184H01M50/572Y02E60/10H01M50/171H01M50/20
Inventor 金度均皇甫光洙李香穆郑湘锡
Owner LG ENERGY SOLUTION LTD
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