Closure system for the electrolyte fill port of an electrochemical cell
US10446825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Feb 26, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A closure system for the electrolyte fill port of an electrochemical cell is described. A cell header has an electrolyte fill port comprising an upper opening sidewall extending from a header upper surface to an intermediate ledge located part-way through the header thickness. The ledge extends from a lower edge of the upper opening sidewall to an upper edge of a lower opening sidewall, the lower opening sidewall extending to the header lower surface. With respect to an axis of the electrolyte fill port, the upper opening sidewall has a first radius r1 and the lower opening sidewall has a second radius r2 at the ledge, the lower opening sidewall extending downwardly and inwardly along the axis from the second radius r2 to a third radius r3 at the header lower surface. The second radius r2 at the ledge is greater than the third radius r3 at the header lower surface. A closure system for an electrolyte fill port comprises a lower closure member secured to the lower opening sidewall by a lower weld; and an upper closure member secured to the upper opening sidewall by an upper weld. Importantly, the lower opening sidewall is provided with rifling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.