Battery protection circuit and battery device
US7990669B2 · kind B2 · utility
1Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2009 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Mar 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00302
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a battery protection circuit and a battery device which may be manufactured at lower cost. Before all terminals of a battery protection circuit are each connected to batteries, even when a logical circuit malfunctions by an operation of a parasitic bipolar transistor formed by P-wells due to a connection order in which the batteries are connected, the logical circuit is reset by an operation of a parasitic bipolar transistor formed by the P-wells. For this reason, a charge/discharge path of the batteries is not interrupted due to the connection order. Accordingly, no limitation is placed on the connection order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.