Integrated drive system for electric motorcycle

Abstract

Disclosed is an integrated drive system for an electric motorcycle, comprising a motor housing, wherein a controller, a motor, and a reduction gearbox are provided in the motor housing, and the controller and the reduction gearbox are respectively located at two ends of the motor. By deeply integrating independent subsystems together, the present invention addresses inherent defects in conventional electric motorcycle drive systems, while offering advantages such as high power density, low noise, low torque ripple, and flexible configuration, thereby satisfying market demand.

Description

Integrated electric motorcycle driving system TECHNICAL FIELD

[0001] The present application belongs to the electric motorcycle driving technical field, more particularly relates to an integrated electric motorcycle driving system. BACKGROUND

[0002] With the wide application of new technology, people's requirements for electric motorcycles are also increasing, and the traditional electric motorcycle driving system is usually composed of a controller, a motor two-in-one structure or a motor and a reducer two-in-one structure, adopts a parallel shaft type gear reduction mechanism driving mode, and is connected mechanically and electrically with each other, and each subsystem is independent, which inevitably has inherent defects such as large size, high cost and low reliability. SUMMARY

[0003] In view of the shortcomings of the prior art, the present application provides an integrated electric motorcycle driving system, which has the advantages of high power density, low noise, small torque fluctuation and flexible configuration, and meets market demand.

[0004] To achieve the above object, the present application provides the following technical scheme: an integrated electric motorcycle driving system, comprising a motor shell, a controller, a motor and a reducer are arranged in the motor shell, and the controller and the reducer are respectively located at two ends of the motor.

[0005] Further, the rear end of the motor shell is provided with a motor end cover, the inside of the motor shell is provided with a motor bearing mounting plate, a sealed control cavity is formed between the motor shell, the motor end cover and the motor bearing mounting plate, the controller is located in the control cavity, the motor main shaft is rotatably connected to the motor bearing mounting plate, a bearing is arranged between the motor main shaft and the motor bearing mounting plate, the motor and the controller are electrically connected through wires, and the wires pass through the motor bearing mounting plate.

[0006] Further, the controller comprises an electrical control module, an adapter seat and an encoder, the motor wire passes through the motor bearing mounting plate and is connected to the adapter seat, the adapter seat is electrically connected to the electrical control module, the electrical control module is connected to the motor end cover, the adapter seat is connected to the motor bearing mounting plate, and the encoder is connected to the motor bearing mounting plate and located at the rear end of the motor main shaft.

[0007] Further, the front end of the motor shell is provided with a reducer end cover, a reduction cavity is formed between the reducer end cover and the motor shell, and a pair of reduction gears is arranged in the reduction cavity.

[0008] Further, the reduction gear pair comprises a central gear connected to the motor shaft, a number of planetary gears and an inner ring gear fixedly connected to the inner wall of the motor housing, the two sides of the planetary gears are respectively engaged with the central gear and the inner ring gear, the output shaft is arranged on the reducer end cover, the planetary support is arranged on the output shaft, the planetary support is connected with the planetary gears, and the bearings are arranged between the planetary gears and the planetary support.

[0009] Further, the motor shaft, the output shaft and the inner ring gear are coaxially arranged.

[0010] Further, a plurality of heat dissipation fins are arranged on the outer side of the motor end cover.

[0011] Compared with the prior art, the beneficial effects of the present application are: the present application deeply integrates each independent subsystem together, the driving system solves the inherent defects of the traditional electric motorcycle driving system, has the advantages of large reduction ratio, strong bearing capacity, flexible configuration and the like, and meets the market demand; the controller is integrated in the left end of the motor by adjusting a suitable structure form, the reducer adopts a planetary gear type, the motor housing is an integrated structure comprising a controller cavity, a motor cavity and a reducer cavity, thereby forming a deeply integrated electric motorcycle driving system. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a schematic view of the internal structure of the integrated electric motorcycle driving system of the present application;

[0013] Fig. 2 is a schematic view of the controller structure of the rear end of the motor housing in the integrated electric motorcycle driving system of the present application;

[0014] Fig. 3 is a schematic view of the reducer structure of the front end of the motor housing in the integrated electric motorcycle driving system of the present application.

[0015] Fig. 1 is a schematic view of the internal structure of the integrated electric motorcycle driving system of the present application; DETAILED DESCRIPTION

[0016] In the description of the present application, it should be noted that for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0017] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the present application, the meaning of "several", "several" is two or more than two, unless otherwise explicitly and specifically limited.

[0018] The present application is further illustrated with reference to Figs. 1 to 3.

[0019] An integrated electric motorcycle driving system, comprising a motor housing 1, a controller 2, a motor 3 and a reducer 4 are arranged in the motor housing 1, and the controller 2 and the reducer 4 are respectively located at both ends of the motor 3.

[0020] As shown in Fig. 1, in the present example, the rear end of the motor housing 1 is provided with a motor end cover 5, and a motor bearing mounting plate 6 is arranged inside the motor housing 1. A sealed control cavity 7 is formed between the motor housing 1, the motor end cover 5 and the motor bearing mounting plate 6, the controller 2 is located in the control cavity 7, the motor 3 main shaft is rotatably connected to the motor bearing mounting plate 6, and a bearing is arranged between the motor 3 main shaft and the motor bearing mounting plate 6. The motor 3 and the controller 2 are electrically connected through wires, and the wires pass through the motor bearing mounting plate 6.

[0021] As shown in Fig. 2, in the present example, the controller 2 comprises an electrical control module 8, an adapter seat 9 and an encoder 10. The motor 3 wire passes through the motor bearing mounting plate 6 and is connected to the adapter seat 9, the adapter seat 9 is electrically connected to the electrical control module 8, the electrical control module 8 is connected to the motor end cover 5, the adapter seat 9 is connected to the motor bearing mounting plate 6, and the encoder 10 is connected to the motor bearing mounting plate 6 and located at the rear end of the motor 3 main shaft.

[0022] Specifically, the electrical control module 8 comprises a PCB board, a power (component, a filter and a plug-in component symmetrically arranged on both sides, etc. Electrical elements.

[0023] Specifically, the PCB of the electric control module 8 is attached to the motor end cover 5 by heat dissipation glue and is fixed by screws.

[0024] As shown in Figure 3, in the preferred embodiment of the present application, the front end of the motor housing 1 is provided with a reducer end cover 11, and a reduction cavity 12 is formed between the reducer end cover 11 and the motor housing 1, and a reduction gear pair is arranged in the reduction cavity 12 to reduce the output rotation speed and increase the torque.

[0025] As shown in Figure 1 and Figure 3, specifically, the motor housing 1 is provided with a motor cavity 13, and the motor 3 is located in the motor cavity 13, and a bearing seat 14 is arranged between the motor cavity 13 and the reduction cavity 12, and the main shaft of the motor 3 passes through the bearing seat 14, and an oil seal 15 is arranged between the main shaft of the motor 3 and the bearing seat 14.

[0026] As shown in Figure 3, in the preferred embodiment of the present application, the reduction gear pair includes a central gear 16, a plurality of planetary gears 17 and an inner ring gear 18, the central gear 16 is connected to the main shaft of the motor 3, the inner ring gear 18 is fixedly connected to the inner wall of the motor housing 1, the two sides of the planetary gear 17 are respectively engaged with the central gear 16 and the inner ring gear 18, the reducer end cover 11 is provided with an output shaft 20, the output shaft 20 is provided with a planetary support 19, the planetary support 19 is connected with the plurality of planetary gears 17, and a bearing is arranged between the planetary gear 17 and the planetary support 19.

[0027] As shown in Figure 3, in the preferred embodiment of the present application, the main shaft of the motor 3, the output shaft 20 and the inner ring gear 18 are coaxially arranged.

[0028] As shown in Figure 3, specifically, the motor 3 main shaft is provided with a connecting shaft 21, and the central gear 16 is located on the connecting shaft 21.

[0029] As shown in Figure 2, in the preferred embodiment of the present application, the outer side of the motor end cover 5 is provided with a plurality of heat dissipation fins 22 to improve the heat dissipation efficiency of the electric control module 8.

[0030] In the preferred embodiment of the present application, the motor 3 is a flat wire structure six-phase permanent magnet synchronous motor 3, and can also be a motor 3 of other structures.

[0031] The present application deeply integrates each independent subsystem together, and the driving system solves the inherent defects of the traditional electric motorcycle driving system, has the advantages of large reduction ratio, strong carrying capacity, flexible configuration and the like, and meets the market demand; the controller 2 is integrated on the left end of the motor 3 by adjusting a suitable structure form, the reducer 4 adopts a planetary gear 17 type, the motor 3 housing is an integrated structure including the controller 2 cavity, the motor cavity 13 and the reducer 4 cavity, thereby forming a deeply integrated electric motorcycle driving system.

[0032] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. An integrated electric motorcycle drive system, characterized by: The motor housing is internally provided with a controller, a motor and a speed reducer, and the controller and the speed reducer are respectively located at two ends of the motor.

2. The integrated electric scooter drive system of claim 1, wherein: The rear end of the motor housing is provided with a motor end cover, and the motor housing is internally provided with a motor bearing mounting plate.

3. The integrated scooter drive system of claim 2, wherein: The controller is located in the sealed control cavity, the motor main shaft is rotationally connected to the motor bearing mounting plate, and a bearing is arranged between the motor main shaft and the motor bearing mounting plate.

4. The integrated electric scooter drive system of claim 1, wherein: The motor is electrically connected to the controller through wires, and the wires pass through the motor bearing mounting plate.

5. The integrated scooter drive system of claim 4, wherein: The controller comprises an electrical control module, an adapter seat and an encoder.

6. The integrated scooter drive system of claim 5, wherein: The motor wires pass through the motor bearing mounting plate and are connected to the adapter seat, the adapter seat is electrically connected to the electrical control module, the electrical control module is connected to the motor end cover, the adapter seat is connected to the motor bearing mounting plate, and the encoder is connected to the motor bearing mounting plate and located at the rear end of the motor main shaft.

7. The integrated scooter drive system of claim 2, wherein: The front end of the motor housing is provided with a speed reducer end cover, and the speed reducer end cover and the motor housing form a speed reduction cavity. The speed reduction cavity is internally provided with a pair of speed reduction gears. The pair of speed reduction gears comprises a central gear, a plurality of planetary gears and an inner ring gear. The central gear is connected to the motor main shaft, the inner ring gear is fixedly connected to the inner wall of the motor housing, the two sides of the planetary gear are respectively engaged with the central gear and the inner ring gear, the output shaft is provided on the speed reducer end cover, the planetary support is provided on the output shaft, the planetary support is connected with the plurality of planetary gears, and a bearing is arranged between the planetary gear and the planetary support. The motor main shaft, the output shaft and the inner ring gear are coaxially arranged. The outer side of the motor end cover is provided with a plurality of heat dissipation fins.

Images