| 摘要 |
The invention relates to an electric power supply system for an electric vehicle (1), comprising a low-voltage network (10) for powering the auxiliary devices of the vehicle (1) and a high-voltage network (12) for powering the propulsion means of the vehicle (1). The low-voltage network (10) comprises a low-voltage battery (100) for storing electric energy and a first converter (102) connected to the high-voltage network (12) for powering the low-voltage network (10), while the high-voltage network (12) comprises a high-voltage battery (120) and switching means (122) for isolating the high-voltage battery (120). In addition, the system comprises a first supervisor (14) for controlling the switching means (122). The system is characterised in that it also comprises first monitoring means (17) for determining if the charge of the low-voltage battery (100) is below or above a first threshold, said supervisor being arranged to control the switching means (122) in order to connect the high-voltage battery (120) if the first monitoring means (17) indicate that the battery charge is below the first threshold. |
