Nonaqueous electrolyte secondary battery
US6040086A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Mar 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A nonaqueous electrolyte secondary battery according to the present invention has a power-generating element and a collector. The power-generating element is provided with a portion where a negative electrode plate and a positive electrode plate are not opposed to each other. In the power-generating element, the electrode plates are wound or laminated through a separation body so that the side edge portion of one of the electrode plates protrudes from that of the other. The collector is connected to the side edge portions. The collector has a plurality of grooves bonded to the side edges of the electrode plates. The bonding is made by at least one of a welding method such as ultrasonic welding method, laser welding method, electric welding method, arc welding method and plasma arc welding method, and a mechanical joint using a rivet, pin or eyelet, or by deforming under pressure the collector to crimp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.