Secondary battery
US10886570B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 31, 2018 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | May 31, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a secondary battery, comprising a winding bare electrode assembly, a battery pouch and a sealing strip. The winding bare electrode assembly comprises an separator and a tab. The sealing strip encloses a part of the tab of the winding bare electrode assembly, is used for hermetically extending the tab of the winding bare electrode assembly out from the battery pouch of the secondary battery, and is provided with a package portion located in a package area of the battery pouch of the secondary battery, and an extension portion disposed in the battery pouch. Wherein a first width of the package portion in the width direction is greater than a second width of the tab, a third width of the extension portion in the width direction is not less than the second width of the tab, and is less than the first width of the package portion, the outer side edge of the extension portion in the width direction is separated from the separator in the width direction, and the lower side edge of the package portion in the length direction is separated from the upper side edge of the separator in the length direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.