Abstract: A stator core, a motor, and a powertrain are disclosed. The stator core includes a plurality of stator laminations, and the plurality of stator laminations is sequentially and adjacently arranged along an axial direction of the stator core to form at least a part of the stator core. Each stator lamination includes a central hole and a plurality of cooling holes, and all the cooling holes are spaced apart between the central hole and an outer circumferential surface of the stator lamination. The plurality of stator laminations includes one first lamination and one second lamination that are adjacently arranged, and each cooling hole of the one first lamination is configured to communicate with one cooling hole of the one second lamination and is configured to cool an end portion of a stator winding, to form a channel for flowing of a cooling working medium.

Abstract: A motor with stator liquid-outlet for winding cooling, a powertrain, and an electric vehicle. The motor with stator liquid-outlet for winding cooling includes an axial gap, two end plates, and a plurality of laminations. Along an axial direction of the motor, the plurality of laminations is arranged between the two end plates, one end plate includes a plurality of liquid outlets, the plurality of liquid outlets is spaced apart along a circumferential direction of the motor, and the axial gap is configured to communicate with at least two adjacent liquid outlets. The axial gap includes an axial gap between two laminations, and at least one other lamination is arranged between the two laminations along the axial direction of the motor.

Abstract: A device includes a memory and a processor. The processor is configured to acquire a first structure including information on an execution order of instructions and information on an amount of memory required for execution of each instruction, generate a second structure in which the information on the execution order and the information on the amount of memory are updated, by executing a manipulation on the first structure, acquire an evaluation value based on the second structure, and update the first structure using the second structure where the evaluation value satisfies a first condition. The first structure and the second structure are structures in which change and value calculation for a predetermined interval are supported, and the processor repeats the generation of the second structure, the acquisition of the evaluation value, and the update of the first structure when the evaluation value satisfies the first condition.

Abstract: This application provides an oil-cooled motor rotor in a groove, a motor, a powertrain, and an electric vehicle. The motor rotor includes a motor shaft, at least one end plate, at least one rotor iron core, and a plurality of magnetic steels. The one rotor iron core includes a plurality of magnetic steel grooves. Each magnetic steel groove is configured to fasten at least one magnetic steel. At least one magnetic steel groove includes a plurality of bumps. The bump enables the magnetic steel groove to form a gap with the magnetic steel. The gap is configured to form an internal flow channel of the one rotor iron core and is configured to communicate with an oil groove of the one end plate. Cooling oil is in direct contact with the magnetic steel to cool the magnetic steel, thereby improving cooling efficiency of the rotor iron core.

Abstract: A motor and a powertrain. The motor includes a stator, an end cover, and a housing. The housing may be configured to install the stator and the end cover, and the stator and the end cover are adjacently arranged along an axial direction of the motor. The end cover includes an outer circumferential surface, a side surface, and an internal channel. The outer circumferential surface includes at least one liquid inlet, and at least one liquid inlet is configured to receive coolant through the housing. The side surface faces the stator, and the side surface includes a plurality of liquid outlets. In the motor, the coolant can enter the end cover through at least one liquid inlet and be sprayed to the stator through the plurality of liquid outlets, to cool the stator.