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Secondary battery

A secondary battery and electrode technology, applied in battery boxes/jackets, battery pack components, circuits, etc., can solve problems such as deterioration of sealing performance

Inactive Publication Date: 2011-07-13
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since it is difficult to apply tar uniformly, the sealing performance will be deteriorated in the crimping process

Method used

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Embodiment Construction

[0023] Example embodiments will be described more fully hereinafter with reference to the accompanying drawings; however, example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0024] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

[0025] figure 1 is a sectional view showing a secondary battery according to an embodiment. figure 2 is showing figure 1 An enlarged cross-sectional view of the lid assembly in . image 3 is showing figure 2 An enlarged view of part III.

[0026] refer to Figure 1 to Figure 3 , the secondary battery 100 includes: an electrode assembly 110; a cylindrical can 120 containing the electrode assembly 110; a cover assembly 130 coupled to the top openi...

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Abstract

A secondary battery is disclosed. The secondary battery includes an electrode assembly formed by stacking and winding two different electrodes and a separator disposed between the electrodes, a can accommodating the electrode assembly, a cap assembly coupled to an upper portion of the can accommodating the electrode assembly, a gasket compressed between the cap assembly and the upper portion of the can to insulate and seal a space between the cap assembly and the can, and an auxiliary sealing member disposed inside the gasket to increase sealing force between the cap assembly and the can. The secondary battery maintains sealing force of the gasket closely contacting the outer surface of the cap assembly to secure sufficient sealing force and inhibit the dispersion of sealing pressures.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2010-0002286 filed with the Korean Intellectual Property Office on January 11, 2010, the disclosure of which is hereby incorporated by reference. technical field [0002] Embodiments relate to a secondary battery. Background technique [0003] Generally, secondary batteries are classified into cylindrical type secondary batteries, prismatic type secondary batteries, and pouch type secondary batteries according to the shape of a case housing an electrode assembly. In these batteries, a cylindrical secondary battery is assembled by inserting an electrode assembly in a cylindrical can and then bonding a cap assembly to the top opening of the cylindrical can such that the cap assembly is electrically connected to the electrode assembly to transmit current to the outside. [0004] A beading part is provided in the top-side end of the can to suppress movement of the electrode assembly in the can. The g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/08H01M2/04H01M50/171H01M50/186H01M50/193
CPCY02E60/12H01M2/08H01M2/1235H01M2/345H01M2/0413Y02E60/10H01M50/171H01M50/342H01M50/578H01M50/186H01M50/193H01M50/167H01M50/107
Inventor 金大奎
Owner SAMSUNG SDI CO LTD