Cap assembly for secondary battery

A technology of cover assembly and top cover, which is applied in the direction of battery pack parts, secondary battery manufacturing, battery cover/end cover, etc., and can solve the problem of floating of CID devices

Active Publication Date: 2018-02-06
LG ENERGY SOLUTION LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when gas is generated, there is a high probability that the CID unit will float

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cap assembly for secondary battery
  • Cap assembly for secondary battery
  • Cap assembly for secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0085] 1. Preparation of battery

[0086] An electrode assembly for a lithium secondary battery having a nominal voltage of 3.58V and a capacity of 3000mAh was prepared. In this electrode assembly, carbon is used as the anode and lithium manganese oxide is used as the cathode. The prepared electrode assembly was loaded in a cylindrical aluminum battery can, and after the electrolyte was injected, the upper end of the battery can was sealed using the cap assembly according to Comparative Example or Example 1-Example 2. The electrolyte contains 1M LiPF 6 A 7:3 (v / v) mixture of ethylene carbonate and propylene carbonate.

[0087] As a cover assembly, there is no CID support in the safety vent and there is figure 1 A cover assembly of the section shown in was used for the comparative example. For Example 1 and Example 2, respectively, with one and two CID supports in the safety vent and with figure 2 with Figure 9 Cover assembly in section shown.

[0088] 2. Measureme...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a cap assembly for a secondary battery and a secondary battery including the same. Specifically, in the cap assembly, a CID filter is fixed such that, even when gas isdischarged due to the rupturing of a safety vent, the CID short-circuit pressure is not affected by the CID filter.

Description

technical field [0001] This application claims priority from Korean Patent Application No. 10-2015-0079826 filed in Korea on June 5, 2015, the disclosure of which is incorporated herein by reference. The present disclosure relates to a cap assembly for a secondary battery and a secondary battery including the same. More specifically, the present disclosure relates to a cap assembly for a secondary battery in which a CID filter is fixed so that even when gas is discharged due to rupture of a safety vent hole, the CID short-circuit pressure is not affected , and a secondary battery including the cap assembly. Background technique [0002] According to the shape of the battery case used in the secondary battery, the secondary battery is classified into a cylindrical battery and a prismatic battery in which the electrode assembly is housed in a cylindrical or prismatic metal can; and a pouch-type battery in which the electrode assembly is housed in a In a pouch-type housing ma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): H01M2/12H01M10/04H01M2/04H01M50/147
CPCH01M50/147H01M50/30H01M10/058Y02E60/10Y02P70/50H01M50/152H01M50/167H01M50/3425H01M10/0422H01M2200/20
Inventor李炳国李帝俊金度均郑湘锡
OwnerLG ENERGY SOLUTION LTD