Abstract: The present application relates to an electric car and an active discharging module, a driving apparatus, and an electric drive system thereof. said active discharging module comprises a discharging subcircuit, which is connected in parallel with the DC-link capacitor of the electric car, and a first switch, which is connected to an actuating apparatus of the electric car and the discharging subcircuit respectively. The discharging subcircuit comprises a discharging resistor and a power switching transistor which are connected in series, wherein the first switch may turn off the power switching transistor after the actuating apparatus is turned on, and turn on the power switching transistor after the actuating apparatus is turned off. Said driving apparatus comprises any one of the above active discharging modules. Said electric drive system comprises any one of the above driving apparatuses. Said electric car comprises any one of the above electric drive system.

Abstract: The utility model discloses a motor stator assembly, a motor and an electric vehicle having the motor. The motor stator assembly comprises a stator iron core and at least two sets of symmetrical three-phase windings, which are arranged to wind the stator iron core respectively, wherein phase differences among three phases Ui, Vi and Wi of each set of the three-phase windings are a 120° electrical angle, and i is the set number of the three-phase windings. In order to address the problem of high output power of drive system, the motor stator assembly uses two sets of three-phase windings having a symmetrical spatial arrangement, and each set of windings is considered as an independent unit and is controlled via a power device respectively; finally, the output powers are superimposed so that the capacity of the inverter is increased while also avoiding problems of equalized current and over-voltage.

Abstract: The utility model discloses a motor stator assembly, a motor and an electric vehicle having the motor. The motor stator assembly comprises a stator iron core and at least two sets of symmetrical three-phase windings, which are arranged to wind the stator iron core respectively, wherein phase differences among three phases Ui, Vi and Wi of each set of the three-phase windings are a 120° electrical angle, and i is the set number of the three-phase windings. In order to address the problem of high output power of drive system, the motor stator assembly uses two sets of three-phase windings having a symmetrical spatial arrangement, and each set of windings is considered as an independent unit and is controlled via a power device respectively; finally, the output powers are superimposed so that the capacity of the inverter is increased while also avoiding problems of equalized current and over-voltage.

Abstract: The present application relates to an electric car and an active discharging module, a driving apparatus, and an electric drive system thereof. said active discharging module comprises a discharging subcircuit, which is connected in parallel with the DC-link capacitor of the electric car, and a first switch, which is connected to an actuating apparatus of the electric car and the discharging subcircuit respectively. The discharging subcircuit comprises a discharging resistor and a power switching transistor which are connected in series, wherein the first switch may turn off the power switching transistor after the actuating apparatus is turned on, and turn on the power switching transistor after the actuating apparatus is turned off. Said driving apparatus comprises any one of the above active discharging modules. Said electric drive system comprises any one of the above driving apparatuses. Said electric car comprises any one of the above electric drive system.

Abstract: The present application relates to the field of electric motor, particularly to a motor rotor structure with copper conductive bars. This application aims at solving the problem existed in the art, which is how to reduce stress concentration of the rotor iron core and how to avoid deformation of the copper end rings. The motor rotor structure of this application comprises a rotor iron core provided with rotor slots, copper conductive bars provided within the rotor slots, rotor end rings respectively provided at two ends of the rotor iron core. Each rotor end ring includes copper end rings and steel end rings. The copper end rings are alternately laminated with the steel end rings and welded together into a piece.