Sealed secondary battery, and method for manufacturing the battery
US8105712B2 · kind B2 · utility
2Cited by
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20Claims
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Key dates
| Filing date | Jun 23, 2009 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jun 23, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4911
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electrode group 4 formed by stacking or winding a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed therebetween, is housed in a battery case 5. An opening of the battery case 5 is sealed with a sealing plate 10. A lead 11 extending from one of the positive and negative electrode plates in the electrode group 4 is laser-welded to the sealing plate 10 by application of a laser beam 12 having a spot diameter smaller than a thickness of the lead 11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.