Powertrain arranged along power flow, and electric vehicle

An electric vehicle, comprising:

• a vehicle body,
• a battery pack,
• a powertrain fastened to the vehicle body,
• wherein the battery pack is connected to the motor controller through a direct-current input interface mounting hole,
• wherein a wheel drive terminal in the powertrain is connected to a wheel of the vehicle in a transmission manner and is configured to provide power for the wheel,
• wherein the powertrain comprises an integrated housing, a motor, and a motor controller, the integrated housing comprises a motor accommodating cavity, a controller accommodating cavity, a direct-current input interface mounting hole, and an alternating-current output interface mounting hole, and the motor comprises a motor shaft and a motor winding,
• wherein the direct-current input interface mounting hole and the alternating-current output interface mounting hole are arranged relative to each other along a first direction,
• wherein the alternating-current output interface mounting hole and a wiring terminal of the motor winding are arranged on one side along the first direction,
• wherein the direct-current input interface mounting hole and an output end of the motor shaft are arranged on the other side along the first direction,
• wherein a projection of the controller accommodating cavity partially overlaps a projection of the motor accommodating cavity along a second direction, and a projection of the direct-current input interface mounting hole,
• wherein projections of the alternating-current output interface mounting hole and the motor shaft do not overlap along a third direction, and
• wherein each of the first, second, and third directions is perpendicular to the other two directions.