Cylindrical battery
US12040454B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2019 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Mar 9, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cylindrical battery provided with: an electrode body in which a positive electrode plate and a negative electrode plate are rolled with a separator being disposed therebetween; an electrolytic solution; an external packaging can which has a bottomed cylindrical shape and which houses the electrode body and the electrolytic solution; and a sealing plate which is fixed by swaging to an opening of the external packaging can with a gasket therebetween. As viewed in a planar view, the sealing plate is formed to have a circular shape, and has a central part recessed inward of the battery. In the sealing plate, an outer circumferential edge fixed by swaging to the external packaging can is configured to bifurcate into a first portion and a second portion in the thickness direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.