Lithium ion secondary battery and process for producing the same
US6376125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object is to provide with good productivity a practical lithium ion secondary battery which secures lightness in weight and safety without using a firm battery case and has reduced internal resistivity. The lithium ion secondary battery comprises a tabular roll type laminated electrode body in which a band-formed positive electrode (3) comprising a positive electrode active material layer (7) and a positive electrode current collector (6) alternates with a band-formed negative electrode (5) comprising a negative electrode active material layer (9) and a negative electrode current collector (10), having therebetween a band-formed rolled separator (4) which holds a lithium ion-containing electrolytic solution, the positive electrode (3) or the negative electrode (5) being adhered with two separators (4) by an adhesive layer (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.