Circuit breaker for secondary battery
US6346344B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery includes a can filled with an electrolyte and an electrode assembly and a cap assembly mounted on an upper end of the can. The cap assembly includes a plate provided with a safety groove, a cap cover disposed on the plate, and a circuit breaker disposed under the plate. The circuit breaker is designed to have an attaching portion firmly attached to the plate and a mechanically weak portion formed around the attaching portion so that the detachment of the circuit breaker from the plate is done by breaking the mechanically weak portion under a predetermined amount of force. The mechanically weak portion is defined by a notch formed around the attaching portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.