In-situ electrolyte storage for batteries
US4842964A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Mar 21, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M6/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides in-situ electrolyte storage for batteries. The size of the reserve battery is significantly smaller due to the placement of an elastomeric sealed container within the interelectrode space of the battery. The sealed container contains the electrolyte. When punctured, the electrolyte flows out of the sealed container and into the electrode space. Substantially simultaneously, the elastomeric sealed container shrinks back allowing the electrolyte to flow into the interelectrode space allowing for the reaction. Preferably, the sealed container is made of elastomeric material that is flexible yet with good memory. This will allow the sealed container to shrink back to a small size when punctured. In addition, the sealed container should have have a low permeability to the electrolyte so as to minimize the amount of electrolyte that escapes from the sealed container while the electrolyte is being stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.