Electrically-driven highly-integrated driving system

Abstract

The utility model discloses an electrically-driven highly-integrated running system with a rotary sleeve in the technical field of automobiles. The electrically-driven highly-integrated running system comprises a hub motor module, a wheel assembly, a torque increasing and speed reducing module, a brake-by-wire module, a suspension damping swing arm module, a steering module, an electric control module and a hub bearing frame. The suspension damping swing arm module comprises a support, a spring damper, a swing arm, a motor shell and a bearing. The steering module comprises a first steering main body, a second steering main body and a steering motor; one end of the hub bearing frame is fixedly connected with the wheel assembly, the other end of the hub bearing frame is connected with the output end of the torque increasing and speed reducing module, and the input end of the torque increasing and speed reducing module is connected with a motor output shaft of the hub motor module. The brake-by-wire module is arranged at the output end of a motor shaft of the hub motor module and used for achieving speed reduction, braking and parking braking in the traveling process. According to the utility model, the modules are not tightly integrated into a whole, so that the transmission efficiency is high, the structure is compact, the size and the occupied space are small, and a large available space is left for the design of a vehicle body.

Description

Technical Field

[0001] The utility model relates to a driving system in the field of automobile technology, in particular to an electric drive highly integrated driving system with a compact structure and a small space occupation. Background Art

[0002] The rapid development of the automotive industry has brought about technological innovations in vehicle travel systems. Corner modules, with their high degree of integration, independence, and versatility, have captured the public's attention. A vehicle travel system can be composed of multiple corner modules, each of which can rotate independently, offering broad application prospects. This high level of integration integrates powertrain, steering, braking, and suspension technologies, reducing the number of mechanical transmission components and optimizing vehicle layout space. This high level of integration enables each corner module to rotate independently, enabling greater vehicle steering and maneuverability. Furthermore, this high level of integration and independence lends itself to widespread versatility, enabling quick installation on a wide range of suitable vehicles. However, current vehicle travel systems (which can also be considered highly integrated corner modules) still face technical challenges such as complex structures, high heat dissipation requirements, poor vibration damping, insufficient reliability, limited load-bearing capacity, and limited applicability. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the utility model proposes an electric drive highly integrated driving system, which integrates these modules tightly into one through a sophisticated layout, has high transmission efficiency, compact structure, and small size, leaving a lot of usable space for vehicle body design.

[0004] The present invention is realized through the following technical solutions, the present invention includes a wheel hub motor module, a wheel assembly, a torque increase and deceleration module, a wire control brake module, a suspension shock absorber swing arm module, a steering module, an electronic control module, and a wheel hub bearing frame; the suspension shock absorber swing arm module includes a longitudinal bracket, a shell bracket, a spring shock absorber, a lower swing arm, an upper swing arm, a motor housing, and a bearing. The bottom of the shell bracket is fixed to the top of the longitudinal bracket, and the upper and lower ends of the motor housing are respectively hinged to the longitudinal bracket through the upper swing arm and the lower swing arm. The motor housing can rotate relative to the longitudinal bracket, one end of the spring shock absorber is connected to the top of the longitudinal bracket, and the other end of the spring shock absorber is connected to the upper top of the motor housing. The electronic control module is arranged on the outer wall of the longitudinal bracket, the bearing is arranged on the rear wall of the motor housing, and the wheel hub motor module is arranged on the motor housing. The steering module is arranged in the housing and fixed together with the motor housing, and the motor shaft of the hub motor module passes through the bearing; the steering module is arranged in the housing bracket, the steering module includes a first steering body and a second steering body, the second steering body includes a steering motor and a reduction mechanism, the first steering body is fixed together with the vehicle body bracket, the second steering body is fixed together with the housing bracket, the first steering body and the second steering body are meshed with gears, and the output end of the steering motor is meshed with the reduction mechanism gear through a gear; one end of the hub bearing frame is fixed together with the wheel assembly, and the other end of the hub bearing frame is connected to the output end of the torque increase and reduction module, and the input end of the torque increase and reduction module is connected to the motor output shaft of the hub motor module; the wire control brake module is arranged at the motor shaft output end of the hub motor module, and is used to realize deceleration, braking and parking brake during driving.

[0005] Furthermore, in the present invention, the torque increasing and reducing module includes an outer shell and a gear mechanism. The gear mechanism is arranged in the outer shell, and the gear mechanism is a sun gear and planetary gear structure.

[0006] Furthermore, in the present invention, the wire control brake module includes a brake motor, a transmission gear, a brake disc, and a center gear. The output shaft gear of the brake motor is engaged with the transmission gear, the transmission gear is engaged with the gear on the edge of the brake disc, the center gear is arranged in the center of the brake disc, and the center gear matches the brake gear on the motor shaft of the hub motor module.

[0007] Furthermore, in the present invention, the electronic control module is used to manage and adjust the input and output of the power supply, monitor and adjust the operating status of each module, and make adaptive adjustments as needed; the electronic control module has overload protection, short circuit protection, and overvoltage protection functions, and can record various events and diagnose faults.

[0008] The modules of the present invention respectively play the roles of a driving unit, a speed and torque adjustment unit, a braking unit, a steering unit, a suspension unit, and a control unit. The various roles cooperate and coordinate with each other to meet various driving and riding needs of the vehicle.

[0009] Drive unit: The in-wheel motor module acts as the drive unit, responsible for providing driving force to the wheels. The motor's rotational power is transmitted through the drive shaft to the deceleration and torque-increasing module, and then to the wheels, thereby driving the vehicle.

[0010] Speed-torque adjustment unit: The deceleration and torque-increasing module reduces the motor output (including torque and speed) by a certain reduction ratio to achieve the output torque and driving speed required by the vehicle.

[0011] Braking unit: The brake-by-wire module serves as a braking unit, which realizes deceleration, braking and parking brake during driving through wire control commands.

[0012] Suspension unit: The suspension arm module is connected to the drive unit as a suspension unit. Its function is to absorb road shock, improving ride comfort and driving stability. The suspension unit consists of a spring, shock absorber, and swing arm, which work together to cushion and disperse shock from the road.

[0013] Steering unit: The steering module serves as a steering unit and is connected to the suspension unit. Its function is to adjust the steering angle of the wheels.

[0014] Control Unit: The electronic control module (ECU) manages and regulates the input and output of power; monitors and adjusts the operating status of each module, adapting to changes as needed; provides various protections, such as overload, short-circuit, and overvoltage protection; and records and diagnoses faults. Overall, the ECU ensures stable, efficient, and safe operation of the driving system.

[0015] The interconnectedness of the components of a highly integrated electric drive system is a complex network, involving the interaction and coordination of multiple functional modules. These connections not only ensure the vehicle's basic driving functions but also enhance its handling performance and ride comfort. The main connections are as follows:

[0016] The wheel is connected to the deceleration and torque-increasing module: the deceleration and torque-increasing module is connected to the wheel assembly through the hub bearing frame.

[0017] Braking-by-wire module: The braking-by-wire module is arranged before the deceleration and torque increase module, at the output end of the motor shaft of the hub motor module, and the required braking torque is relatively small.

[0018] The deceleration and torque-increasing module is connected to the hub motor: the hub motor is connected to the deceleration and torque-increasing module through the motor output shaft.

[0019] The wheel hub motor is connected to the suspension shock absorber swing arm module: the suspension shock absorber swing arm module is connected to the motor housing through the swing arm.

[0020] The suspension shock absorber swing arm module is connected to the steering module: the suspension shock absorber swing arm module includes a swing arm, a shock absorber, and a shell support frame, and the steering module is installed on the shell support frame.

[0021] Electronic control module: The electronic control module is integrated on the housing bracket, which is a common part of the suspension shock absorber swing arm module and the steering module.

[0022] Connection between the steering module and the vehicle frame: The steering module includes a first steering body fixed to the vehicle frame and a second steering body fixed to the housing bracket. The steering module is used to rotate the second steering body relative to the first steering body, thereby changing the direction of the wheel.

[0023] When the utility model is deployed at the corresponding locations on the vehicle's four wheels, it acts like a traditional automobile chassis, supporting the vehicle's mass and integrating transmission, driving, steering, braking, and shock absorption. It transmits torque, mitigates the impact of uneven roads, and reduces body vibration. Because each of the four wheels is independently driven, it can meet various driving and riding requirements, including lateral movement and on-the-spot steering.

[0024] Compared with the existing technology, the beneficial effects of the present invention are: the present invention has a reasonable design and a simple structure; through an excellent layout, these modules are tightly integrated into one, with high transmission efficiency, compact structure, and small size, leaving a large available space for the design of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of an embodiment of the present utility model;

[0026] Figure 2 It is a front view of an embodiment of the utility model;

[0027] Figure 3 A top view of an embodiment of the present utility model;

[0028] Figure 4 A cross-sectional view of an embodiment of the present utility model;

[0029] Figure 5 Exploded view of parts for implementing this utility model;

[0030] Figure 6 for Figure 5 A partial enlarged view of the middle wheel assembly;

[0031] Figure 7 for Figure 5 A partial enlarged view of the torque increase and deceleration module;

[0032] Figure 8 for Figure 5 A partial enlarged view of the center brake-by-wire module;

[0033] Figure 9 for Figure 5 A partial enlarged view of the mid-wheel motor module and the lower end of the suspension shock absorber swing arm module;

[0034] Figure 10 for Figure 5 A partial enlarged view of the upper end of the center suspension shock absorber arm module;

[0035] Figure 11 for Figure 5 A partial enlarged view of the steering module;

[0036] Among them, 1. Hub motor module, 2. Torque increase and deceleration module, 3. Wire control brake module, 4. Suspension shock absorber swing arm module, 5. Steering module, 6. Electronic control module, 7. Hub bearing frame, 8. Wheel assembly, 201. Outer shell, 202. Gear mechanism, 301. Brake motor, 302. Transmission gear, 303. Brake disc, 304. Center gear, 401. Longitudinal bracket, 402. Shell bracket, 403. Spring shock absorber, 404. Lower swing arm, 405. Upper swing arm, 406. Motor housing, 407. Bearing, 501. First steering body, 502. Deceleration mechanism, 503. Steering motor. DETAILED DESCRIPTION

[0037] To make the contents of this utility model easier to understand, the technical solutions of this utility model are further explained below in conjunction with specific embodiments. The examples are only used to illustrate this utility model, but this utility model is not limited to these contents. The operating methods in the following examples without specific conditions are generally carried out under conventional conditions or in accordance with the product instructions. Example

[0038] like Figures 1 to 11As shown, the utility model includes a hub motor module 1, a torque increase and reduction module 2, a wire control brake module 3, a suspension shock absorber swing arm module 4, a steering module 5, an electronic control module 6, a hub bearing frame 7, and a wheel assembly 8; the suspension shock absorber swing arm module 8 includes a longitudinal bracket 401, a shell bracket 402, a spring shock absorber 403, a lower swing arm 404, an upper swing arm 405, a motor housing 406, and a bearing 407. The bottom of the shell bracket 402 is fixed to the top of the longitudinal bracket 401, and the upper and lower ends of the motor housing 406 are respectively connected by the upper swing arm 405 and the lower swing arm 407. 6 is hingedly connected to the longitudinal bracket 401. The motor housing 406 is rotatable relative to the longitudinal bracket 401. One end of the spring damper 403 is connected to the top of the longitudinal bracket 401, and the other end of the spring damper 403 is connected to the upper top of the motor housing 406. The electronic control module 6 is arranged on the outer wall of the longitudinal bracket 401, and the bearing 407 is arranged on the rear wall of the motor housing 406. The in-wheel motor module 1 is arranged in the motor housing 406 and fixed to the motor housing 406. The motor shaft of the in-wheel motor module 1 passes through the bearing 407. The steering module 5 is arranged in the housing bracket 402. The steering module 5 includes a first steering body 501 and a second steering body. The second steering body includes a steering motor 503 and a reduction mechanism 502. The first steering body 501 is fixed to the vehicle body bracket, and the second steering body is fixed to the housing bracket. The first steering body 501 and the second steering body are meshed by gears. The output end of the steering motor 503 is meshed with the gear of the reduction mechanism 502 via a gear. The torque-acceleration and reduction module 2 includes an outer shell 201 and a gear mechanism 202, which is housed within the outer shell 201 and has a sun gear and planetary gear structure. The brake-by-wire module 3 includes a brake motor 301, a transmission gear 302, a brake disc 303, and a sun gear 304. The output shaft gear of the brake motor 301 meshes with the transmission gear 302, which in turn meshes with a gear on the edge of the brake disc 303. The sun gear 304 is located at the center of the brake disc and mates with the brake gear on the motor shaft of the in-wheel motor module 1. One end of the wheel hub bearing frame 7 is secured to the wheel assembly 8, while the other end of the wheel hub bearing frame 7 is connected to the output of the torque-acceleration and reduction module 2. The input of the torque-acceleration and reduction module 2 is connected to the motor output shaft of the in-wheel motor module 1. The brake-by-wire module 3 is located at the motor shaft output of the in-wheel motor module 1 and is used to decelerate, brake, and park the vehicle while driving.

[0039] In the implementation of this utility model, the transmission relationship of the modules involves the coordination between multiple systems such as driving, braking and steering. The main ones are as follows:

[0040] Drive: The wheel hub motor module 1 acts as a driving mechanism, transmitting the torque and speed to the deceleration and torque increase module 2, and then through the wheel hub bearing frame 7 to drive the wheel to rotate.

[0041] Braking: The brake-by-wire module 3 is located at one end of the wheel hub motor shaft and directly brakes the drive mechanism. The brake-by-wire module 3 includes a brake motor 301, an intermediate transmission gear 302, and a brake disc 303.

[0042] Steering: The steering module 5 includes a first steering body 501 and a second steering body. The second steering body includes a steering motor 503 and a reduction gear 502. The steering motor 503 and reduction gear 502 are fixed to the housing bracket. The output end of the steering motor 503 meshes with the input end of the reduction gear 502, and the output end of the reduction gear 502 meshes with the gear of the first steering body 501. The other end of the first steering body 501 is fixed to the vehicle frame. The steering module 5 is used to drive the second steering body to rotate about the axis of the first steering shaft 501, thereby achieving wheel steering.

[0043] The above embodiments are merely illustrative of the design principles and uses of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. An electric drive highly integrated driving system, including a hub motor module and a wheel assembly, characterized in that: It also includes a torque increase and deceleration module, a wire control brake module, a suspension shock absorber swing arm module, a steering module, an electronic control module, and a wheel hub bearing frame; The suspension shock absorber swing arm module includes a longitudinal bracket, a housing bracket, a spring shock absorber, a lower swing arm, an upper swing arm, a motor housing, and a bearing. The bottom of the housing bracket is fixed to the top of the longitudinal bracket, and the upper and lower ends of the motor housing are hinged to the longitudinal bracket through the upper swing arm and the lower swing arm respectively. The motor housing can rotate relative to the longitudinal bracket, one end of the spring shock absorber is connected to the top of the longitudinal bracket, and the other end of the spring shock absorber is connected to the upper top of the motor housing. The electronic control module is arranged on the outer wall of the longitudinal bracket, the bearing is arranged on the rear wall of the motor housing, the wheel hub motor module is arranged in the motor housing and fixed to the motor housing, and the motor shaft of the wheel hub motor module passes through the bearing; The steering module is arranged in the housing bracket, and the steering module includes a first steering body and a second steering body. The second steering body includes a steering motor and a reduction mechanism. The first steering body is fixedly connected to the vehicle body bracket, and the second steering body is fixedly connected to the housing bracket. The first steering body and the second steering body are meshed with gears, and the output end of the steering motor is meshed with the gear of the reduction mechanism through a gear. One end of the wheel hub bearing frame is fixed to the wheel assembly, and the other end of the wheel hub bearing frame is connected to the output end of the torque increase and reduction module, and the input end of the torque increase and reduction module is connected to the motor output shaft of the wheel hub motor module; The brake-by-wire module is arranged at the motor shaft output end of the wheel hub motor module and is used to achieve deceleration, braking and parking brake during driving.

2. The highly integrated electric drive system according to claim 1 is characterized in that The torque increasing and reducing module includes an outer shell and a gear mechanism. The gear mechanism is arranged in the outer shell and is a sun gear and planet gear structure.

3. The highly integrated electric drive system according to claim 2 is characterized in that The wire control brake module includes a brake motor, a transmission gear, a brake disc, and a center gear. The output shaft gear of the brake motor is meshed with the transmission gear, the transmission gear is meshed with the gear on the edge of the brake disc, and the center gear is arranged in the center of the brake disc. The center gear matches the brake gear on the motor shaft of the hub motor module.

4. The highly integrated electric drive system according to claim 2 is characterized in that The electronic control module is used to manage and adjust the input and output of the power supply, monitor and adjust the operating status of each module, and make adaptive adjustments as needed; the electronic control module has overload protection, short circuit protection, and overvoltage protection functions, and can record various events and diagnose faults.

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