Lithium ion secondary battery and manufacture thereof
US6232014A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Jul 19, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A practical lithium ion secondary battery. The battery is light in weight and is safe without using a firm battery case. It also has reduced internal resistivity. The battery includes a tabular roll-type laminated electrode body in which a band-formed positive electrode alternates with a band-formed negative electrode, with a band-formed rolled separator being placed therebetween. The positive electrode includes a positive electrode active material layer and a positive electrode current collector. The negative electrode includes a negative electrode active material layer and a negative electrode current collector. The separator holds a lithium ion-containing electrolytic solution. The positive electrode or the negative electrode is adhered with two separators by an adhesive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.