Complete discharge device for lithium battery
US6270916A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1998 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Dec 28, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for completely discharging a LiSO.sub.2 battery which is not prone to self-activation and which does not require special tools for activation. In the present invention, as switch is formed of a switch contact (e.g,. a spring contact) biased toward a contact pad. When the contact and contact pad meet, the discharge circuit of the complete discharge device (CDD) is activated. Under normal conditions, an elongated insulative strip projects between the switch contact and the contact pad and extends through the casing of the battery. The extension allows the strip to be pulled out from the exterior of the casing. Also under normal conditions, the portion of the strip extending through the casing is folded over and covered with a peel-off label. When it is desired to activate the complete discharge device, the peel-off label is removed to expose the end of the strip, and the strip can be withdrawn from the casing. This then allows the contact and the contact pad to touch and activate the CDD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.