Battery charge protection system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 18, 2014
Grant Date -
Aug 9, 2012
app pub date -
Feb 6, 2012
filing date -
Feb 7, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system comprises a battery including one or more cells, an energy source, a load, and a battery protection circuit coupled to the battery, the energy source and the load. The circuit determines if the charge of each cell is at/above a predetermined, band gap supplied threshold voltage, which results in disconnecting of the battery from the energy source. The circuit also may determine if the charge of any cell is at/below a second predetermined level, which may result in disconnecting of the battery from the load. The circuit may be radiation-hardened (e.g., via redundancy), through the use of two sets of field effect transistors, two logic gates, two groups of comparator circuits, and two relays. The circuit provides multiply redundant protection comprising: redundantly assessing the overvoltage determination; redundantly triggering battery isolation; and preventing inadvertent isolation and non-charging, occurring absent overvoltage, through redundant first and second relays.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- H02H Class
- 918 Applications Filed
- 788 Patents Issued To-Date
- 85.84 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- H02H Class
- 7.51 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 18, 2025 |
