Abstract: In a vehicle drive system, a hybrid drive manner of dual hub drive assemblies and a centralized drive assembly/dual independent drive assemblies are used. When the vehicle travels at a constant speed with a small torque, the dual hub drive assemblies are used to drive the vehicle. When the vehicle accelerates startup or accelerates to overtake, a large torque is required, and the centralized drive assembly/dual independent drive assemblies is/are used to drive the vehicle, or the centralized drive assembly/dual independent drive assemblies and the dual hub drive assemblies are used together to drive the vehicle. Therefore, the vehicle drive system provided uses the hybrid drive manner of dual hub drive assemblies and the centralized drive assembly/dual independent drive assemblies.

Abstract: An electrically excited motor drive system is integrated with an on-board charger (OBC), so that a power supply circuit that is in an electric vehicle and that is configured to drive an electrically excited motor can be integrated with an OBC of a dual active bridge (DAB) type. When a control component controls a switch circuit, the electrically excited motor drive system obtained after integration can separately implement a function of the power supply circuit or a function of the charging circuit in different working modes. In addition, when the electrically excited motor drive system is in different working modes, some circuits are further reused through time division. This addresses a problem that the power supply circuit cannot be integrated with the OBC of the DAB type, to reduce circuit complexity and costs of the electric vehicle.