| 摘要 |
A system for supplying electrical power to a vehicle comprises: - a network of electricity consuming units, which is able to be powered in a range of voltages less than or equal to a maximum network voltage (Vmax_network), - a first electrical accumulation battery connected to the network, and exhibiting a first maximum voltage when unloaded (V0max_Batt1) which is less than the maximum network voltage (Vmax_network), - a second electrical accumulation battery connected to the network, exhibiting a second maximum voltage when unloaded (V0max_Batt2), which is greater than the maximum voltage when unloaded of the first battery (V0max_Batt1), and a minimum acceptable voltage when unloaded (V0mini_Batt2) which is below the maximum network voltage (Vmax_network), - a drivable alternator connected to the network, and able to deliver to the second battery an electrical energy under a setpoint voltage drivable to various setpoint values (Valt_low, Valt_high). The system furthermore comprises an electronic management facility, configured to impose at least two different setpoint voltages successively on the alternator when the vehicle is running, namely a low alternator voltage (Valt_low) which is strictly greater than the first maximum voltage when unloaded of the first battery (V0max_Batt1), and a high alternator voltage (Valt_high) which is strictly greater both than the minimum voltage when unloaded of the second battery (V0mini_Batt2), and than the low alternator voltage (Valt_low). |
