Wheel-side motor driving system

Abstract

The invention relates to a wheel-side motor driving system, which comprises a stator assembly, a rotor assembly, a transmission end assembly, a caliper disc brake and a non-transmission end assembly,and is characterized in that the stator assembly comprises a water-cooling base provided with a cooling water channel, and a water inlet joint and a water outlet joint which extend along the axial direction are arranged at two ends of the cooling water channel respectively; the rotor assembly comprises a rotating shaft, an iron core, a rotor punching sheet assembly and a rotor sleeve, an outer convex ring is arranged on the outer wall of the rotating shaft, an inner convex ring is arranged on the inner wall of the iron core, and the iron core is connected with the rotating shaft through a plurality of bolts; the non-transmission end assembly comprises an integrated end cover, an outgoing line box is arranged on the integrated end cover, a transition support used for installing the caliperdisc brake is arranged on the integrated end cover, and a protective cover arranged on the periphery of the caliper disc brake in a covering mode is arranged on the transition support. Cooling water enters and exits from the end of the shaft in the axial direction, a lead in the motor is led out from the end cover in the axial direction, a brake installation support is designed, and a standard brake is directly installed on the end cover of the motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a wheel-side motor drive system. Background technique [0002] With the gradual deepening of research on electric drive technology, the structural layout of the vehicle drive system is gradually developing from a centralized drive with a single power source to a distributed drive with multiple power sources. Compared with centralized drive, distributed drive saves components such as gearbox, transmission shaft, mechanical differential, half shaft, etc., and moves the motor to the wheel side, making its transmission structure simpler. Realize power distribution and controllability, make the driving form of the whole vehicle diverse, and improve the passing performance of the whole vehicle under all ground and multi-working conditions. [0003] The existing wheel drive generally adopts a high-speed inner wheel motor, equipped with a reducer with a fixed transmission ratio, which ...

AI Technical Summary

Problems solved by technology

Generally, the scheme of separating the motor and the brake is adopted, and the integration of the power system, power system, electric drive system, hydraulic system and braking system is not high based on the overall vehicle working conditions and power requirements.

[0004] There are the following disadvantages in the prior art: ① The existing wheel motors generally use high-speed motors and reducers as the main drive, and the brake is installed at the output end of the reducer or behind it. The mechanical brake is the main brake, and the braking force is relatively large. A separate high-pressure hydraulic system configuration is required, which affects the lightweight design of the entire vehicle; ③ Existing motors generally adopt the design of rotor oblique poles, which is not conducive to ensuring the overall strength of the rotor, and the structure and process are more complicated; ④ Existing standard brakes cannot be directly installed on the end cover or frame of the motor , requires targeted design or additional transitional support for installation

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