Battery remaining capacity measuring apparatus
US5744931A · kind A · utility
18Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A remaining capacity operation portion 19 provides an approximate linear function (I=aV+b) having a voltage-current characteristic by a method of least squares according to an open circuit voltage when a load 1 is disconnected to a battery 3, a closed circuit voltage when a battery 3 is connected to a load 1 which is detected for every predetermined time and a current passing through a load, where a reference value (I<0) is substituted in this approximate linear function, which a display portion 27 displays as an remaining capacity voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.