Electric motorcycle drive system

Abstract

An electric motorcycle drive system, comprising a swingarm connected to a motorcycle frame; a motor housing (1) is provided on one side of the swingarm, and a controller (2), a motor (3) and a reducer (4) are provided in the motor housing, the controller and the reducer being respectively located at two ends of the motor; an output shaft (20) is provided on the reducer, a hub (23) is provided on the output shaft, and the output shaft is rotatably connected to the other side of the swingarm. The drive system can improve the overall transmission efficiency, optimize the transmission ratio, and reduce the cost of drive systems.

Description

Electric motorcycle drive system TECHNICAL FIELD

[0001] The utility model belongs to electric motorcycle drive technical field, more specifically relates to a kind of electric motorcycle drive system. BACKGROUND

[0002] With the extensive application of new technology, people's requirements for electric motorcycles are also increasing, and the traditional electric motorcycle drive system is usually composed of a controller, a motor two-in-one structure or a motor and a reducer two-in-one structure, which adopts a parallel shaft type gear reduction mechanism driving mode, and is mechanically and electrically connected to each other. Each subsystem is independent of each other, the drive assembly has low integration, large size, high cost and low reliability, and the coordination efficiency between traditional mechanism components is low, which may cause energy loss and unstable control problems, and also increases maintenance costs.

[0003] UTILITY MODEL CONTENTS

[0004] To overcome the shortcomings of the prior art, the utility model provides an electric motorcycle drive system, which improves transmission efficiency and reduces the cost of the drive system.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electric motorcycle drive system, comprising a rear fork support connected to a motorcycle frame, a motor housing is arranged on one side of the rear fork support, a controller, a motor and a reducer are arranged in the motor housing, the controller and the reducer are respectively located at both ends of the motor, an output shaft is arranged on the reducer, a hub is arranged on the output shaft, and the output shaft is rotatably connected to the other side of the rear fork support.

[0006] Further, a spacer sleeve is arranged on the output shaft, and the spacer sleeve is located between the hub and the rear fork support.

[0007] Further, the rear fork support comprises a fixed support connected to the motorcycle frame, the fixed support is connected to a motor support and a right fork support at both ends respectively, the motor housing is connected to the motor support, the output shaft is rotatably connected to the right fork support, and the spacer sleeve is located between the hub and the right fork support.

[0008] Further, a motor end cover is arranged at the rear end of the motor housing, a motor bearing mounting plate is arranged inside the motor housing, a sealed control cavity is formed between the motor housing, 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 is electrically connected to the controller through a wire, and the wire passes through the motor bearing mounting plate.

[0009] Further, the controller comprises an electrical control module, an adapter seat and an encoder, the motor outgoing line is connected to the adapter seat through the motor bearing mounting plate, the adapter seat is electrically connected with the electrical control module, the electrical control module is connected with the motor end cover, the adapter seat is connected with the motor bearing mounting plate, and the encoder is connected with the motor bearing mounting plate and located at the rear end of the motor spindle.

[0010] Further, the front end of the motor shell is provided with a reducer end cover, a reducer cavity is formed between the reducer end cover and the motor shell, and a reducer gear pair is arranged in the reducer cavity.

[0011] Further, the reducer gear pair comprises a central gear, a plurality of planetary gears and an inner gear ring, the central gear is connected to the motor spindle, the inner gear ring is fixedly connected to the inner wall of the motor shell, the two sides of the planetary gear are respectively meshed with the central gear and the inner gear ring, the output shaft is provided with a planetary support, the planetary support is connected with the plurality of planetary gears, and a bearing is arranged between the planetary gear and the planetary support.

[0012] Further, the motor spindle, the output shaft and the inner gear ring are coaxially arranged.

[0013] Further, the outer side of the motor end cover is provided with a plurality of heat dissipation fins.

[0014] Compared with the prior art, the drive system controller, the motor and the reducer are closely coupled, the energy loss in the transmission process is reduced, the design reduces the friction and energy conversion loss in the transmission system, thereby improving the overall transmission efficiency; at the same time, the transmission ratio can be optimized, and the system efficiency is further improved; the drive system has the advantages of integration and high efficiency; and the cost of the drive system is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic view of the electric motorcycle drive system of the utility model;

[0016] Fig. 2 is a schematic view of the internal structure of the integrated motor in the electric motorcycle drive system of the utility model;

[0017] Fig. 3 is a schematic view of the controller structure at the rear end of the motor shell in the electric motorcycle drive system of the utility model;

[0018] Fig. 4 is a schematic view of the reducer structure at the front end of the motor shell in the electric motorcycle drive system of the utility model.

[0019] Reference numerals: 1. Motor housing; 2. Controller; 3. Motor; 4. Reducer; 5. Motor end cover; 6. Motor bearing mounting plate; 7. Control cavity; 8. Electrical control module; 9. Adapter; 10. Encoder; 11. Reducer end cover; 12. Reducer cavity; 13. Motor cavity; 14. Bearing housing; 15. Oil seal; 16. Center gear; 17. Planetary gear; 18. Internal gear ring; 19. Planetary support; 20. Output shaft; 21. Connecting shaft; 22. Heat sink fins; 23. Hub; 24. Spacer; 25. Fixed bracket; 26. Motor bracket; 27. Right horizontal fork bracket. Detailed Implementation

[0020] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0022] The present invention will be further described with reference to Figures 1 to 4.

[0023] An electric motorcycle drive system includes a rear swingarm bracket connected to the motorcycle frame. A motor housing 1 is provided on one side of the rear swingarm bracket. A controller 2, a motor 3, and a reducer 4 are provided inside the motor housing 1. The controller 2 and the reducer 4 are respectively located at both ends of the motor 3. An output shaft 20 is provided on the reducer 4. A hub 23 is provided on the output shaft 20. The output shaft 20 is rotatably connected to the other side of the rear swingarm bracket.

[0024] As shown in Figure 1, in this preferred embodiment, the output shaft 20 is provided with a spacer 24, which is located between the wheel hub 23 and the rear horizontal fork bracket.

[0025] As shown in Fig. 1, in the preferred embodiment of the present application, the rear fork support comprises a fixed support 25 connected with the motorcycle frame, the two ends of the fixed support 25 are connected with a motor support 26 and a right fork support 27 respectively, the motor housing 1 is connected with the motor support 26, the output shaft 20 is rotatably connected with the right fork support 27, and the spacer sleeve 24 is located between the hub 23 and the right fork support 27.

[0026] Specifically, the right fork support 27 is provided with a bearing hole, the output shaft 20 passes through the bearing hole, and a bearing is arranged in the bearing hole and connected with the output shaft 20.

[0027] Specifically, the two ends of the fixed support 25 are connected with the motor support 26 and the right fork support 27 respectively by bolts.

[0028] As shown in Fig. 2, in the preferred embodiment of the present application, the rear end of the motor housing 1 is provided with a motor end cover 5, the motor housing 1 is internally provided with a motor bearing mounting plate 6, 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 with the motor bearing mounting plate 6, a bearing is arranged between the motor 3 main shaft and the motor bearing mounting plate 6, the motor 3 is electrically connected with the controller 2 through wires, and the wires pass through the motor bearing mounting plate 6.

[0029] As shown in Fig. 3, in the preferred embodiment of the present application, 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 with the adapter seat 9, the adapter seat 9 is electrically connected with the electrical control module 8, the electrical control module 8 is connected with the motor end cover 5, the adapter seat 9 is connected with the motor bearing mounting plate 6, and the encoder 10 is connected with the motor bearing mounting plate 6 and located at the rear end of the motor 3 main shaft.

[0030] Specifically, the electrical control module 8 comprises a PCB board, power components, filters and plug-in components symmetrically arranged on both sides of the electrical control module 8.

[0031] Specifically, the PCB board of the electrical control module 8 is attached to the motor end cover 5 by heat dissipation adhesive and is fixed by screws.

[0032] As shown in Fig. 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, a reducer cavity 12 is formed between the reducer end cover 11 and the motor housing 1, a pair of reducer gears are arranged in the reducer cavity 12 to reduce the output speed and increase the torque.

[0033] As shown in Fig. 2 and Fig. 4, specifically, the motor housing 1 is provided with a motor cavity 13, the motor 3 is located in the motor cavity 13, the motor cavity 13 is provided with a bearing seat 14 between the reduction cavity 12, the motor 3 spindle passes through the bearing seat 14, the motor 3 spindle is provided with an oil seal 15 between the bearing seat 14.

[0034] As shown in Fig. 4, preferably in the present example, 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 motor 3 spindle, 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 engaged with the central gear 16 and the inner ring gear 18 respectively, the output shaft 20 is provided with a planetary support 19, the planetary support 19 is connected with a plurality of planetary gears 17, the planetary gear 17 and the planetary support 19 are provided with a bearing.

[0035] As shown in Fig. 4, preferably in the present example, the motor 3 spindle, the output shaft 20 and the inner ring gear 18 are coaxially arranged.

[0036] As shown in Fig. 4, specifically, the motor 3 spindle is provided with a connecting shaft 21, the central gear 16 is located on the connecting shaft 21.

[0037] As shown in Fig. 3, preferably in the present example, the outer side of the motor end cover 5 is provided with a plurality of cooling fins 22, which improves the heat dissipation efficiency of the electrical control module 8.

[0038] Preferably in the present example, the motor 3 is a flat wire structure six-phase permanent magnet synchronous motor 3, which can also be other structure motor 3.

[0039] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned examples, any technical solution under the idea of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. An electric motorcycle drive system characterised in that: The application relates to a rear fork support connected with a motorcycle frame, a motor casing is arranged on one side of the rear fork support, a controller, a motor and a speed reducer are arranged in the motor casing, the controller and the speed reducer are respectively located at two ends of the motor, an output shaft is arranged on the speed reducer, a wheel hub is arranged on the output shaft, and the output shaft is rotationally connected with the other side of the rear fork support.

2. The electric motorcycle drive system of claim 1, wherein: A spacer sleeve is arranged on the output shaft and located between the wheel hub and the rear fork support.

3. The electric motorcycle drive system of claim 2, wherein: The rear fork support comprises a fixing support connected with the motorcycle frame, a motor support and a right fork support are respectively connected with two ends of the fixing support, the motor casing is connected with the motor support, the output shaft is rotationally connected with the right fork support, and the spacer sleeve is located between the wheel hub and the right fork support.

4. The electric motorcycle drive system of claim 1, wherein: A motor end cover is arranged at the rear end of the motor casing, a motor bearing mounting plate is arranged in the motor casing, a sealed control cavity is formed between the motor casing, the motor end cover and the motor bearing mounting plate, the controller is located in the control cavity, a motor main shaft is rotationally connected with the motor bearing mounting plate, bearings are arranged between the motor main shaft and the motor bearing mounting plate, the motor is electrically connected with the controller through wires, and the wires pass through the motor bearing mounting plate.

5. The electric motorcycle drive system of claim 4, wherein: The controller comprises an electrical control module, an adapter seat and an encoder, the motor wires pass through the motor bearing mounting plate and are connected with the adapter seat, the adapter seat is electrically connected with the electrical control module, the electrical control module is connected with the motor end cover, the adapter seat is connected with the motor bearing mounting plate, and the encoder is connected with the motor bearing mounting plate and located at the rear end of the motor main shaft.

6. The electric motorcycle drive system of claim 1, wherein: A speed reducer end cover is arranged at the front end of the motor casing, a speed reduction cavity is formed between the speed reducer end cover and the motor casing, and a pair of speed reduction gears are arranged in the speed reduction cavity.

7. The electric motorcycle drive system of claim 6, wherein: 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 with the motor main shaft, the inner ring gear is fixedly connected with the inner wall of the motor casing, the two sides of the planetary gears are respectively engaged with the central gear and the inner ring gear, a planetary support is arranged on the output shaft, the planetary support is connected with the plurality of planetary gears, and bearings are arranged between the planetary gears and the planetary support.

8. The electric motorcycle drive system of claim 7, wherein: The motor main shaft, the output shaft and the inner ring gear are coaxially arranged.

9. The electric motorcycle drive system of claim 4, wherein: A plurality of heat dissipation fins are arranged on the outer side of the motor end cover.

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