Method for manufacturing battery cell and battery cell manufactured using the same
US8974955B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2013 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | May 1, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method for manufacturing a battery cell including an electrode assembly and electrolyte provided in a battery case composed of a laminate sheet having a resin layer and a metal layer, which includes; (a) thermally fusing and sealing the periphery of the case except for an end part thereof while the electrode assembly is mounted in the case; (b) introducing the electrolyte through the unsealed end part then sealing the same by thermal fusion; (c) charging and discharging the battery cell to activate the same; (d) puncturing the unsealed part inside the end part to form a through-hole communicating with the inside of the case; and (e) pulling top and bottom faces of the battery case in the opposite direction to each other at the unsealed part to open the same while applying vacuum pressure, to thereby remove the gas generated during activation as well as excess electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.