Electrode plate for secondary battery with nonaqueous electrolyte and process for producing same
US6423446B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an electrode plate having a collector 1, an active material layer 2 and a non-coated portion 3 and satisfies at least one of the following conditions. (1) The maximum thickness in an area inside by 20 mm from an edge portion of the active material layer is not more than the sum of an average thickness of the active material layer and 10 &mgr;m. (2) In an inclined portion of the peripheral edge portion of the active material layer, an area in which the thickness of the active material layer is not less than 1 &mgr;m and less than an average thickness of the active material layer has a width of not more than 1 mm. (3) An absolute value of a positional shifting of an actually formed pattern with respect to a true boundary line of a predetermined pattern is not more than 1 mm. (4) The active material layers are formed in a plane symmetry to front and back surfaces of the collector, and an absolute value in the positional shifting between the patterns formed on front and back side surfaces of the collector is not more than 1 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.