Hub motors and automobiles

Abstract

The invention relates to a hub motor. The hub motor comprises a stator and a rotor coaxially arranged outside the stator in a sleeving mode. The outer side of the stator is provided with an iron core,and the iron core is used for driving the rotor to rotate. The stator further comprises a support provided with a liquid cooling channel, and the liquid cooling channel comprises a water inlet, a water outlet, a first annular liquid path and a second annular liquid path that are arranged in parallel; the first annular liquid path and the second annular liquid path are communicated with each otherand are respectively communicated with the water inlet and the water outlet. Cooling liquid of the automobile flows from the water inlet, passes through the first annular liquid path, a connecting hole and the second annular liquid path, and then reaches the water outlet, so that cooling of the iron core is achieved. The liquid cooling channel structure of the hub motor is optimized in spatial arrangement, and a circumferential water path is adopted, so that the water flow resistance is reduced. And meanwhile, the internal axial space is fully utilized, and the axial size of the hub motor can be effectively controlled.

Description

technical field [0001] The present application relates to the field of automobiles, in particular to an in-wheel motor with good heat dissipation capability and an automobile including the in-wheel motor. Background technique [0002] In the existing electric drive system technology of the electric vehicle hub, the driving motor structure in the technical solution of the outer rotor of the hub motor generally uses a water circuit structure as a cooling system to adjust its working temperature. However, most of the cooling system waterway structures of the existing drive electrode structures have problems of complex design and long mold development cycle, resulting in low space utilization of the in-wheel motor, difficult manufacturing process, and high cost. In addition, the existing outer rotor hub motors generally have the defects of large water resistance and poor cooling and heat dissipation effect of the drive system due to the large number of cooling water channels flo...

AI Technical Summary

Problems solved by technology

However, most of the existing cooling system waterway structures for drive electrode structures have complex design and long mold development cycles, resulting in low space utilization of hub motors, difficult manufacturing processes, and high costs

In addition, the existing outer rotor hub motors generally have the defects of large water resistance and poor cooling and heat dissipation effect of the drive system due to the large number of cooling water channels flowing to the corners.

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