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Secondary battery

A secondary battery and electrode assembly technology, which is applied in secondary battery manufacturing, battery pack parts, battery cover/end cover, etc., to improve safety and promote current discharge

Active Publication Date: 2015-04-29
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In that case, there is a risk of ignition and explosion of the secondary battery since a short circuit between the terminal board and the can does not occur

Method used

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Embodiment Construction

[0034] Hereinafter, examples of embodiments of the present invention will be described in detail with reference to the accompanying drawings so that they can be easily manufactured and used by those skilled in the art.

[0035] figure 1 is an exploded perspective view of a secondary battery according to an embodiment of the present invention, figure 2 yes figure 1 A plan view of the cover plate shown in, image 3 is along figure 2 The cross-sectional view taken by the line I-I', Figure 4 is showing image 3 A cross-sectional view of another embodiment of the reinforcement unit shown in .

[0036] refer to figure 1 , the secondary battery 100 according to an embodiment of the present invention includes an electrode assembly 110 , a can 120 and a cap assembly 130 .

[0037] The electrode assembly 110 includes: a first electrode plate 111 having a first active material coated on a surface of a first current collector; a second electrode plate 112 having a second active ...

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PUM

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Abstract

A secondary battery, which can improve safety during a longitudinal compression test by reinforcing strength of a cap plate, is provided. In one embodiment, the secondary battery includes an electrode assembly, a can accommodating the electrode assembly, and cap plate coupled to a top portion of the can and sealing the can, wherein a reinforcement unit is formed on at least one side of the cap plate.

Description

technical field [0001] Aspects of the invention relate to secondary batteries. Background technique [0002] Generally, during a longitudinal compression test of a secondary battery, a force is applied from both sides of the can to the center of the can. When the secondary battery is bent about the center of the can, the secondary battery may undergo current discharge due to a short circuit between the terminal plate and the can. However, during the longitudinal compression test, due to the force applied from both sides of the can, both sides of the cover plate were deformed earlier than other parts of the can before a short circuit between the terminal board and the can occurred. In that case, since a short circuit between the terminal plate and the can may not occur, there is a risk of ignition and explosion of the secondary battery. Contents of the invention [0003] Aspects of the present invention provide a secondary battery capable of improving safety during a long...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M50/15
CPCH01M10/04H01M50/15H01M10/0431H01M10/0436Y02E60/10H01M50/169H01M50/3425Y02P70/50H01M50/147
Inventor 成宰一吉尾英明尹智园
Owner SAMSUNG SDI CO LTD