ELECTRICAL CIRCUIT AND MOTOR VEHICLE COMPRISING SUCH A CIRCUIT

The invention relates to an electrical circuit (2) for a motor vehicle including electrical devices (4, 5, 6) and an internal combustion engine. The electrical circuit comprises a first electrical battery (B1) and a second electrical battery (B2) and is configured such that: - the second battery supplies some of said devices with power while the first battery is disconnected from said devices whenthe vehicle is stationary for an extended period, and such that - the first battery supplies at least some of said devices with power during the engine startup phase. Additionally, at equal level ofcharge, and over at least one given range of levels of charge, a voltage of the second battery is higher than a voltage of the first battery. The invention also relates to a motor vehicle provided with such an electrical circuit. 本发明涉及一种用于机动车辆的电气电路(2)，该机动车辆包括电气设备(4，5，6)和内燃发动机。该电气电路包括第一电池(B1)和第二电池(B2)，并且被配置为使得：-当该车辆处于长时间停放状态时，该第二电池向所述设备中的一些设备供电，而该第一电池与所述设备断开连接，并且使得-在起动该发动机的阶段中，该第一电池向所述设备中的至少一些设备供电。此外，在相等电量状态下，并且在至少给定的电量状态范围