Rechargeable battery
US9692032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2013 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin film is used in a metallic collector in order to increase the volume energy density. However, the strength of the thin film is low, so when a negative plate or a positive plate is directly joined to a terminal base portion, even an insignificant load might cause damage, such as cutting of the metallic collector. Even in a structure where the metallic collector is joined to a highly-conductive plate-like metal or a highly-conductive plate-like resin, and where the collecting plate is joined to a terminal base portion, the connection between the collecting plate and the terminal base portion affects the battery properties. The present invention provides a rechargeable battery including an electrode group in which a metallic collector having a negative active material layer formed on a surface, a separator retaining an electrolyte, and another metallic collector having a positive active material layer formed on a surface are alternately disposed in a layered manner into a strip shape such that the separator is interposed between the two kinds of metallic collectors, and electrode plate tabs formed at ends of the two kinds of metallic collectors are joined to each of metallic co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.