Button-type battery
US12308450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2020 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | May 15, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A button-type battery of the present disclosure is provided with a package assembly and a rolled cell. In an actual application process, both a battery cup and a battery cover have a protective function, while a sealing plastic ring has a waterproof function. In addition, when an electrode tab needs welding, position of the electrode tab is determined, and the battery cup and/or the battery cover are subjected to resistance welding. Accordingly, a center welding layer is formed by resistance welding on a contact portion at a central position where the electrode tab of the rolled cell contacts the battery cup and/or the battery cover, and an edge welding layer is formed by resistance welding on a contact portion at an edge position where the electrode tab of the rolled cell contacts the battery cup and/or the battery cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.