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US 2023/0155221 A1Published application
Pouch-Shaped Battery Cell Manufacturing Method Including Secondary Sealing and Pouch-Shaped Battery Cell Manufactured Thereby
AssigneeLG Energy Solution, Ltd.
InventorsMin Jung Kim, Tai Joon Seo, Woo Yong Lee
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Abstract
The prevent invention relates to a pouch-shaped battery cell manufacturing method including receiving an electrode assembly in a battery case made of a laminate sheet, primarily sealing an outer edge of the battery case, and secondarily sealing at least a part of the primarily sealed outer edge, wherein sealing force of a sealed portion formed after both the primary sealing and the secondary sealing are performed is low, whereby it is possible to induce the venting position and venting time of a pouch-shaped battery cell.
Claims12
A pouch-shaped battery cell manufacturing method comprising:
- receiving an electrode assembly in a battery case made of a laminate sheet;
- primarily sealing an outer edge of the battery case at a first sealing temperature;
- and
- secondarily sealing at least a part of the primarily sealed outer edge at a second sealing temperature, wherein
- the primary sealing and the secondary sealing are performed by pressing a first case and a second case using a high-temperature sealing tool, and
- the first sealing temperature is greater than the second sealing temperature.
3 more elements
Dependencies are inferred from the claim text.