Integrated electric motorcycle drive system

Abstract

The present invention discloses an integrated electric motorcycle drive system, which includes a motor housing, within which a controller, motor, and reduction gear are installed. The controller and reduction gear are located at opposite ends of the motor, respectively, and by deeply integrating these independent subsystems, the system solves the inherent shortcomings of conventional electric motorcycle drive systems and offers advantages such as high power density, low noise, low torque fluctuation, and flexible configuration.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric motorcycle drive technology, and more specifically, relates to an integrated electric motorcycle drive system.

Background Art

[0002] With the spread of new technologies, people's demand for electric motorcycles is also increasing. Conventional electric motorcycle drive systems usually adopt a two-in-one structure of a controller and a motor, or a two-in-one structure of a motor and a speed reducer, and employ a driving method using a parallel shaft gear reduction mechanism. They are mechanically connected or electrically connected to each other, and each subsystem is independent of each other, so that inherent defects such as large volume, high cost, and low reliability cannot be avoided.

Summary of Invention

Problems to be Solved by the Invention

[0003] In view of the defects in the prior art, the present invention provides an integrated electric motorcycle drive system which has advantages such as high power density, low noise, small torque fluctuation, and flexible configuration, and can meet market demands.

Means for Solving the Problems

[0004] To achieve the above object, the present invention provides the following technical solution, which is an integrated electric motorcycle drive system, comprising a motor housing, wherein a controller, a motor, and a speed reducer are installed inside the motor housing, and the controller and the speed reducer are respectively located at both ends of the motor.

[0005] Furthermore, a motor end cover is installed at the rear end of the motor housing, a motor bearing mounting plate is installed 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 inside the control cavity, the motor's main shaft is rotatably connected to the motor bearing mounting plate, a bearing is installed between the motor's main shaft and the motor bearing mounting plate, the motor and the controller are electrically connected by a wire, and the wire passes through the motor bearing mounting plate.

[0006] Furthermore, the controller includes an electrical control module, an adapter base, and an encoder. The motor leads are connected to the adapter base after passing through the motor bearing mounting plate, the adapter base is electrically connected to the electrical control module, the electrical control module is connected to the motor end cover, the adapter base 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's main shaft.

[0007] Furthermore, a reduction gear end cover is installed at the front end of the motor housing, a reduction cavity is formed between the reduction gear end cover and the motor housing, and a pair of reduction gears is installed inside the reduction cavity.

[0008] Furthermore, the reduction gear pair includes a central gear, a plurality of planetary gears, and a ring gear, the central gear being connected to the main shaft of the motor, the ring gear being fixedly connected to the inner wall of the motor housing, both sides of the planetary gear meshing with the central gear and the ring gear respectively, an output shaft being installed on the reduction gear end cover, a planetary carrier being installed on the output shaft, the planetary carrier being connected to the plurality of planetary gears, and bearings being installed between the planetary gears and the planetary carrier.

[0009] Furthermore, the main shaft, output shaft, and ring gear of the motor are arranged coaxially.

[0010] Furthermore, multiple heat dissipation fins are installed on the outside of the motor end cover. [Effects of the Invention]

[0011] Compared to the prior art, the beneficial effects of the present invention are as follows: The present invention deeply integrates independent subsystems, and the drive system solves the inherent shortcomings of conventional electric motorcycle drive systems, offering advantages such as a large reduction ratio, excellent load-bearing capacity, and flexible configuration, thus meeting market needs. The controller is integrated at the left end of the motor by adjusting it to an appropriate structural form, the reduction gear uses a planetary gear type, and the motor case has an integrated structure including a controller cavity, a motor cavity, and a reduction gear cavity, thereby forming a deeply integrated, one-piece electric motorcycle drive system. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram showing the internal structure of the integrated electric motorcycle drive system of the present invention. [Figure 2] This is a schematic diagram showing the controller structure at the rear end of the motor housing in the integrated electric motorcycle drive system of the present invention. [Figure 3] This is a schematic diagram showing the reduction gear structure at the front end of the motor housing in the integrated electric motorcycle drive system of the present invention. [Modes for carrying out the invention]

[0013] In the description of the present invention, the directional terms such as "center," "horizontal direction (X)," "vertical direction (Y)," "vertical direction (Z)," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," and "counterclockwise" represent directions and positional relationships based on the directions and positional relationships shown in the drawings. These terms are merely for the purpose of easily explaining and simplifying the explanation of the present invention, and do not indicate or imply that the shown devices or elements necessarily have a specific direction, or are configured and operated in a specific direction, nor should they be understood as limiting the specific scope of protection of the present invention.

[0014] Furthermore, terms such as "first," "second," etc., are used solely for explanatory purposes and should not be understood as indicating or implying relative importance or implicitly representing the number of technical features. Thus, features limited by "first," "second," etc., may explicitly or implicitly include one or more such features, and in the description of the present invention, "several" and "multiple" mean two or more unless otherwise explicitly specified.

[0015] The present invention will be further described with reference to Figures 1 to 3.

[0016] An integrated electric motorcycle drive system, comprising a motor housing 1, the motor housing 1 containing a controller 2, a motor 3, and a reduction gear 4, the controller 2 and the reduction gear 4 being located at opposite ends of the motor 3, respectively.

[0017] As shown in Figure 1, in this example, preferably, a motor end cover 5 is installed at the rear end of the motor housing 1, a motor bearing mounting plate 6 is installed 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 inside the control cavity 7, the main shaft of the motor 3 is rotatably connected to the motor bearing mounting plate 6, a bearing is installed between the main shaft of the motor 3 and the motor bearing mounting plate 6, the motor 3 and the controller 2 are electrically connected by a wire, and the wire passes through the motor bearing mounting plate 6.

[0018] As shown in Figure 2, in this example, preferably, the controller 2 includes an electrical control module 8, an adapter base 9, and an encoder 10. The lead wires of the motor 3 pass through the motor bearing mounting plate 6 and are connected to the adapter base 9. The adapter base 9 is electrically connected to the electrical control module 8, which is connected to the motor end cover 5. The adapter base 9 is connected to the motor bearing mounting plate 6. The encoder 10 is connected to the motor bearing mounting plate 6 and is located at the rear end of the main shaft of the motor 3.

[0019] Specifically, the electrical control module 8 includes electrical elements such as a PCB substrate, a power assembly, a filter, and connector assemblies symmetrically arranged on both sides.

[0020] Specifically, the PCB board of the electrical control module 8 is attached to the motor end cover 5 using a heat-dissipating adhesive and secured with screws.

[0021] As shown in Figure 3, in this example, preferably, a gearbox end cover 11 is installed at the front end of the motor housing 1, a reduction cavity 12 is formed between the gearbox end cover 11 and the motor housing 1, and a pair of reduction gears is installed in the reduction cavity 12, thereby reducing the rotational speed of the output and improving torque.

[0022] As shown in Figure 1 and Figure 3, specifically, a motor cavity 13 is disposed in the motor housing 1, the motor 3 is located inside the motor cavity 13, the motor cavity 13 and the reduction cavity 12 are separated by a disposed bearing pedestal 14, the main shaft of the motor 3 penetrates through the bearing pedestal 14, and an oil seal 15 is disposed between the main shaft of the motor 3 and the bearing pedestal 14.

[0023] As shown in Figure 3, in this example, preferably, the reduction gear pair includes a center gear 16, a plurality of planet gears 17, and a ring gear 18, the center gear 16 is connected to the main shaft of the motor 3, the ring gear 18 is fixedly connected to the inner wall of the motor housing 1, both sides of the planet gear 17 mesh with the center gear 16 and the ring gear 18 respectively, an output shaft 20 is disposed on the reducer end cover 11, a planet carrier 19 is disposed on the output shaft 20, the planet carrier 19 is connected to the plurality of planet gears 17, and a bearing is disposed between the planet gear 17 and the planet carrier 19.

[0024] As shown in Figure 3, in this example, preferably, the main shaft of the motor 3, the output shaft 20, and the ring gear 18 are arranged coaxially.

[0025] As shown in Figure 3, specifically, a connecting shaft 21 is disposed on the main shaft of the motor 3, and the center gear 16 is located on the connecting shaft 21.

[0026] As shown in Figure 2, in this example, preferably, a plurality of heat dissipation fins 22 are disposed on the outer side of the motor end cover 5 to improve the heat dissipation efficiency of the electric control module 8.

[0027] In this example, preferably, the motor 3 is a six-phase permanent magnet synchronous motor 3 with a flat wire structure, and may also be a motor 3 of other structures.

[0028] The present invention deeply integrates independent subsystems, and the drive system solves the inherent shortcomings of conventional electric motorcycle drive systems, offering advantages such as a large reduction ratio, excellent load-bearing capacity, and flexible configuration, thus meeting market needs. The controller 2 is integrated at the left end of the motor 3 by adjusting it to an appropriate structural form, the reduction gear 4 uses a planetary gear 17 type, and the motor housing 1 is an integrated structure including the controller 2 cavity, motor cavity 13, and reduction gear 4 cavity, thereby forming a deeply integrated, one-piece electric motorcycle drive system.

[0029] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above examples. Any technical solution that falls within the concept of the present invention falls within the scope of protection of the present invention. Furthermore, those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered to be within the scope of protection of the present invention. [Explanation of symbols]

[0030] 1. Motor housing, 2 controllers, 3 motors, 4 reducer, 5. Motor end cover, 6. Motor bearing mounting plate, 7 Control cavity, 8 Electrical control module, 9 adapter bases, 10 encoders, 11. Gear reducer end cover, 12 reduction cavities, 13 motor cavity, 14 Bearing base, 15 oil seals, 16 Center gear, 17 Planetary Gear, 18 ring gear, 19 Planetary carriers, 20 output shafts, 21 connecting shafts, 22 heat dissipation fins.

Claims

1. An integrated electric motorcycle drive system, comprising a motor housing, wherein a controller, a motor, and a reduction gear are installed within the motor housing, and the controller and reduction gear are located at opposite ends of the motor, respectively.

2. The integrated electric motorcycle drive system according to claim 1, characterized in that a motor end cover is installed at the rear end of the motor housing, a motor bearing mounting plate is installed 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 inside the control cavity, the motor's main shaft is rotatably connected to the motor bearing mounting plate, a bearing is installed between the motor's main shaft and the motor bearing mounting plate, the motor and the controller are electrically connected by a wire, and the wire passes through the motor bearing mounting plate.

3. The integrated electric motorcycle drive system according to claim 2, wherein the controller includes an electrical control module, an adapter base, and an encoder, the motor leads are connected to the adapter base after passing through the motor bearing mounting plate, the adapter base is electrically connected to the electrical control module, the electrical control module is connected to the motor end cover, the adapter base 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's main shaft.

4. The integrated electric motorcycle drive system according to claim 1, characterized in that a reduction gear end cover is installed at the front end of the motor housing, a reduction cavity is formed between the reduction gear end cover and the motor housing, and a pair of reduction gears is installed inside the reduction cavity.

5. The integrated electric motorcycle drive system according to claim 4, characterized in that the reduction gear pair includes a center gear, a plurality of planetary gears, and a ring gear, the center gear is connected to the main shaft of the motor, the ring gear is fixedly connected to the inner wall of the motor housing, both sides of the planetary gear mesh with the center gear and the ring gear, respectively, an output shaft is installed on the reducer end cover, a planetary carrier is installed on the output shaft, the planetary carrier is connected to the plurality of planetary gears, and a bearing is installed between the planetary gear and the planetary carrier.

6. The integrated electric motorcycle drive system according to claim 5, characterized in that the main shaft, output shaft, and ring gear of the motor are arranged coaxially.

7. The integrated electric motorcycle drive system according to claim 2, characterized in that a plurality of heat dissipation fins are installed on the outside of the motor end cover.

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