Method for manufacturing secondary battery, and method for manufacturing battery pack comprising same
A secondary battery and electrode assembly technology, which is applied in the field of manufacturing secondary batteries that are easy to discharge gas, and manufacturing battery packs including the secondary battery, can solve problems such as improving battery performance limitations, and achieve the effect of improving battery performance
Pending Publication Date: 2021-12-31
LG ENERGY SOLUTION LTD
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Problems solved by technology
[0006] However, a can type secondary battery has a structure in which the inside of the can is sealed, and gas generated inside the can during activation may not be discharged to the outside
Therefore, there is a limit in improving battery performance
Method used
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[0053] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so as to be easily implemented by those skilled in the art to which the present invention pertains. However, the present invention can be implemented in various forms and is not limited to the embodiments described herein. Also, in the drawings, parts irrelevant to the description will be omitted to clearly describe the present invention, and like elements will be denoted by like reference numerals throughout the specification.
[0054] [Secondary Battery According to First Embodiment of the Present Invention]
[0055] Such as Figure 1 to Figure 6 As shown, the secondary battery 100 according to the first embodiment of the present invention includes an electrode assembly 110 , an electrolyte 120 , a can 130 for accommodating the electrode assembly 110 and the electrolyte 120 , and a cap assembly 140 mounted to an opening of the can 130 .
[0056] ...
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The present invention relates to a method for manufacturing a secondary battery, the method comprising: a cap assembly manufacturing step (S10) for manufacturing a cap assembly by disposing a top cap, having a top hole formed therein, on the upper portion, and disposing a safety vent, having a vent hole formed therein, below the top cap, and then disposing a CID filter, having a CID hole formed therein, below the safety vent; an electrode assembly and electrolyte receiving step (S20) for receiving an electrode assembly inside a can, and then injecting an electrolyte so that same is impregnated in the electrode assembly; a preliminary battery manufacturing step (S30) comprising a placement process for disposing the cap assembly on the upper portion of the can, and a coupling process for coupling a positive electrode tab, provided on the electrode assembly, to the bottom surface of the CID filter of the cap assembly so that the front end of the positive electrode tab closes the CID hole; an activation step (S40) for charging / discharging the preliminary battery; and a gas discharge step (S50) for, when the positive electrode tab, tightly adhering to the CID filter, is pressed downward through the CID hole, vent hole and top hole of the cap assembly, opening the CID hole and discharging gas, generated inside the can, to the outside through the CID hole, vent hole and top hole.
Description
[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2020-0014553 filed on February 6, 2020, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to a method for manufacturing a secondary battery and a method for manufacturing a battery pack including the secondary battery, and in particular, to a method for manufacturing a secondary battery that easily discharges gas and a A method for manufacturing a battery pack including the secondary battery. Background technique [0004] Generally, a secondary battery refers to a chargeable and dischargeable battery, which is different from a non-rechargeable primary battery. Such secondary batteries are widely used in high-tech electronics, such as mobile phones, notebook computers and camcorders. [0005] Secondary batteries are classified into can-type secondary batteries and pouch-...
Claims
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IPC IPC(8): H01M10/04H01M50/30H01M50/317
CPCH01M10/0422H01M10/0431H01M50/394H01M50/317H01M50/578H01M50/152H01M50/531H01M10/446H01M10/52H01M50/186H01M50/184H01M50/3425Y02E60/10Y02P70/50H01M50/572H01M2200/20H01M50/342H01M50/166H01M10/049
Inventor 孙钟仁金志恩
Owner LG ENERGY SOLUTION LTD