Dual battery system with improved overvoltage protection
Patent
·
OSTI ID:6420575
This patent describes an electrical system for a vehicle, the system comprising: a DC generator having an output; first and second storage batteries each having a rated voltage connected in series with each other and adapted to be charged from the generator; a first load circuit including the first battery and a first load device in parallel and adapted to be powered by electricity at a voltage in a first voltage range corresponding to the rated voltage of the first battery; a second load circuit including the first and second batteries in series with each other and a second load device in parallel with the series connection of the batteries and adapted to be powered by electricity at a voltage in a second voltage range corresponding to the sum of the rated voltages of the batteries; a first regulating means for regulating the voltage across the first load circuit; a second regulating means for regulating the voltage across the second load circuit; and control means responsive to an increase in the voltage across the first load circuit to a value above the first voltage range for causing the second regulating means to decrease the voltage across the second load circuit.
- Assignee:
- NOV; EDB-87-124077; NOV-87-067548
- Patent Number(s):
- US 4672294
- OSTI ID:
- 6420575
- Country of Publication:
- United States
- Language:
- English
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