Battery control system for battery operated vehicles
US4012681A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1975 |
| Grant date | Mar 15, 1977 |
| Priority date | — |
| Expiry date | Jan 3, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system is disclosed for monitoring the state of charge of batteries in a fleet of electrically powered vehicles. Each battery has associated with it an integrator module which registers both the depletion and charging of the battery. While the battery is in use in the vehicle, a portion of the current flowing from the battery is sent to the integrator module which registers the current depletion. A readout circuit is also coupled to the integrating device for indicating the condition of the battery while it is in the vehicle. When the battery reaches a predetermined low state of charge, circuitry provided for detecting this condition provides a prewarning signal and on further discharge disables nonessential auxiliary functions in the vehicle, leaving only those systems working which are necessary in order for the driver to be able to return to a battery charging station. At the charging station, the integrator module and the battery are removed from the vehicle and connected at the charging station. During charging, the integrator module is coupled to the charger and a portion of the current leaving the charger passes through the integrator module providing continuous display of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.