Medium- or large-sized battery pack having safety device
US7488546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Feb 24, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a medium- or large-sized battery pack having a plurality of unit cells. The battery pack includes a safety device (fire-extinguishing safety device) for spraying a material to prevent or restrain the fire or the explosion of the battery pack when the temperature of the battery pack exceeds the critical temperature level threatening the safety of the battery pack. The fire-extinguishing safety device according to the present invention has the effect of securing the safety of the battery pack when the temperature or the voltage is abruptly increased entirely or partially in the battery pack due to various causes, such as a breakdown of a safety system, and it is not possible to control the battery pack only by an operation control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.