Motor controller for preventing excessive battery discharging
US6111731A · kind A · utility
39Cited by
17References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Feb 26, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller for a battery-powered electric motor automatically disables the motor when the battery voltage (1) remains below a first, higher level for a longer time when the motor is off, or (2) remains below a second, lower level for a longer time when the motor is on, or (3) falls below a low level less than about one quarter the nominal level of the voltage for a shorter time. The motor is automatically enabled when the battery voltage rises to a higher level for a preset time period, indicative of charging of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.