Management of gas pressure and electrode state of charge in alkaline batteries
US10211491B2 · kind B2 · utility
1Cited by
4References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 22, 2013 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Sep 24, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inventive, new system that measures gas composition and pressure in the headspace of an aqueous electrolyte battery is described. The system includes a microcontroller that can use the composition and pressure information to connect a third electrode to either the anode(s) or the cathode(s) in order to balance the state of charge between the two. Results have shown that such a system can control the gas pressure inside a sealed flooded aqueous electrolyte battery to remain below 20 kPa (3 psi) and greatly extend the useable life of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.