Electrochemical cell having wave corner sealed joints, and device and method for forming same
US11638948B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Nov 22, 2017 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Apr 5, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A forming device is configured to form metal laminated sheet material into a tray-shaped case half while allowing the material to form pleats in the corners of the recess during the forming process while preventing formation of pleats along the flange. The device forms the flange so that excess material in the corners of the case halves is arranged in an undulating shape. As a result, the flange has a waved or ruffled configuration at each corner. Two such case halves are sealed together along the flange to form a reliably sealed package. A method of forming pouch cell is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.