Driving system of four-wheel hub driving electric passenger car

Abstract

The utility model discloses a four-wheel hub driving electric passenger car driving system which comprises a front suspension and a rear suspension of a passenger car, hubs are arranged on the two sides of the front suspension and the two sides of the rear suspension respectively, and each hub is correspondingly provided with a driving motor through a suspension assembly. The driving motor outputs current through a motor controller to control the rotating speed and the torque of driving hubs of the driving motor, the motor controller is in signal connection with a vehicle control unit, and the vehicle control unit distributes required driving high-voltage electricity through a battery connected with the vehicle control unit and outputs the driving high-voltage electricity to the motor controller to carry out vector control on each hub. The driving motor is provided with a resolver sensor, the resolver sensor is fed back to the whole vehicle controller through a motor controller, and the whole vehicle controller controls the torque difference of each hub through the motor controller connected with the whole vehicle controller to achieve steering control of the passenger car.

Description

Technical Field

[0001] The utility model belongs to an electric bus driving system, in particular to a four-wheel hub driven electric bus driving system. Background Art

[0002] Traditional buses are mostly driven by a central single motor, and the disadvantages of the motor, such as heavy weight, high power consumption, and large size, are becoming increasingly prominent. With the continuous development of electric bus technology, electric buses have gradually become a popular product in the market. However, traditional electric buses still have some problems, such as large turning radius, pure rear axle drive, and inability to achieve four-wheel drive, which affect the user experience of electric buses. Utility Model Content

[0003] The utility model aims to solve the problems of large radial direction, simple rear axle drive and inability to realize four-wheel drive in the prior art buses.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-wheel hub-driven electric bus drive system, comprising a front suspension and a rear suspension of the bus, wherein hubs are arranged on both sides of the front suspension and the rear suspension, and each hub is correspondingly configured with a drive motor through a suspension assembly, and the drive motor controls the rotation speed and torque of the drive hub through the output current of the motor controller, and the motor controller signal is connected to the vehicle controller, and the vehicle controller distributes the required driving high voltage electricity output to the motor controller through the battery connected thereto to control the rotation speed of each hub, and the drive motor is provided with a resolver sensor, and the resolver sensor is fed back to the vehicle controller through the motor controller, and the vehicle controller controls the torque difference of each hub through the motor controller connected thereto to realize the steering control of the bus.

[0005] Preferably, the vehicle controller controls the high-voltage distribution cabinet on the vehicle to distribute high-voltage electricity output to the motor controller to perform vector control on each wheel hub.

[0006] Preferably, the high-voltage distribution cabinet is used for the air conditioner, electric steering pump, electric air pump and DC power supply on the vector vehicle at the same time.

[0007] Preferably, the front suspension is provided with a tie rod for connecting the left and right suspension assemblies thereof.

[0008] Preferably, the front suspension and the rear suspension are provided with a coil spring damper assembly between the two wheel hubs.

[0009] Preferably, the front suspension is provided with a rocker arm between the wheel hubs on both sides and the tie rod, and the rocker arm is supported by a rocker arm bracket.

[0010] The utility model has the following beneficial effects: The utility model is a four-wheel hub driven electric bus driving system, which can realize four-wheel independent steering, is more versatile and has a wider range of applicable working conditions than conventional front wheel steering. The utility model can independently drive four wheels at the same time, perform multi-posture driving, and can adapt to more complex working conditions. The independent forward and reverse drive and other functions of the utility model can increase braking in critical situations to reduce the change links of speed out of control. The utility model reduces vehicle transmission components through the independent drive setting, saves costs, and increases transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For a technician in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a driving schematic diagram of the driving system of the utility model.

[0013] Figure 2 This is a front view of the front suspension of the utility model;

[0014] Figure 3 It is a top view of the front suspension of the utility model;

[0015] Figure 4 It is a side view of the front suspension of the utility model;

[0016] Figure 5 This is a front view of the rear suspension of the utility model;

[0017] Figure 6 It is a top view of the rear suspension of the utility model.

[0018] In the figure: 1-left front suspension assembly; 2-left front rocker arm; 3-first coil spring shock absorber assembly; 4-middle tie rod; 5-right front rocker arm; 7-right front suspension assembly; 8-first bolt; 9-first nut; 10-first eccentric bolt; 11-first eccentric washer; 12-second nut; 13-first fastening pin; 14-third nut; 15-rocker arm bracket; 16-spring assembly; 17-second bolt; 18-left rear suspension assembly; 19-right rear suspension assembly; 20-spring seat assembly; 21-third bolt; 22-spring washer; 23-second coil spring shock absorber assembly; 24-second fastening pin; 25-fourth nut; 26-steering tie rod; 27-fourth bolt; 28-fifth nut; 29-second eccentric bolt; 30-second eccentric washer; 31-fifth nut; 32-third eccentric bolt. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the first technician in the field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the first technician in the field without making creative work belong to the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] Example

[0025] The following are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the following embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0026] Reference Manual Attached Figure 1 A four-wheel hub-driven electric bus drive system includes a front suspension and a rear suspension of the bus, and hubs are arranged on both sides of the front suspension and the rear suspension. Each hub is correspondingly configured with a drive motor through a suspension assembly. The drive motor controls the speed and torque of its drive hub through the output current of the motor controller. The motor controller signal is connected to the vehicle controller. The vehicle controller distributes the required drive high voltage electricity to the motor controller through the battery connected to it to control the speed of each hub. The drive motor is provided with a rotary sensor, and the rotary sensor is fed back to the vehicle controller through the motor controller. The vehicle controller controls the torque difference of each hub through the motor controller connected to it to realize the steering control of the bus. The vehicle controller drives the high voltage electricity output to the motor controller through the high voltage distribution cabinet on the vehicle to control the speed of each hub. The high voltage distribution cabinet is also used to drive the air conditioner, electric steering pump, electric air pump and DC power supply on the vehicle.

[0027] Reference Manual Attached Figure 2-6The front suspension and rear suspension respectively include a left front suspension assembly 1, a right front suspension assembly 2, a left rear suspension assembly 18 and a right rear suspension assembly 19, and the drive motors configured by the suspension assemblies are arranged corresponding to the four wheel hubs to realize the individual drive of each wheel hub. The front suspension is provided with an intermediate tie rod 4 for connecting the left and right suspension assemblies. The front suspension and the rear suspension are both provided with a first coil spring shock absorber assembly 3 and a second coil spring shock absorber assembly 23 between the wheel hubs and the tie rods for shock absorbing the entire front suspension and the rear suspension. The front suspension and the rear suspension are provided with a left front rocker arm 2 and a right front rocker arm 5 between the wheel hubs on both sides, and the rockers are supported by rocker arm brackets 15. The rear suspension is also provided with a spring seat assembly 20 at the installation position of the second coil spring shock absorber assembly 23 for further shock absorption. The rear suspension is also provided with a steering tie rod 26 between the left and right wheel hubs for assisting the wheel hubs of the rear suspension in steering operation.

[0028] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A four-wheel hub driven electric bus drive system, characterized in that: The invention comprises a front suspension and a rear suspension of a bus, wherein wheel hubs are arranged on both sides of the front suspension and the rear suspension, and each wheel hub is correspondingly configured with a drive motor through a suspension assembly, and the drive motor controls the rotation speed and torque of the drive wheel hub through an output current of a motor controller, and the motor controller signal is connected to a vehicle controller, and the vehicle controller distributes the required drive high voltage electricity output to the motor controller through a battery connected thereto to perform vector control on each wheel hub, and the drive motor is provided with a resolver sensor, and the resolver sensor is fed back to the vehicle controller through the motor controller, and the vehicle controller controls the torque difference of each wheel hub through the motor controller connected thereto to realize steering control of the bus.

2. The four-wheel hub driven electric bus driving system according to claim 1, characterized in that: The vehicle controller drives the high voltage power output to the motor controller through the high voltage distribution cabinet on the vehicle to perform vector control on each wheel hub.

3. The four-wheel hub driven electric bus driving system according to claim 2, characterized in that: The high-voltage power distribution cabinet is used to drive the vehicle's air conditioner, electric steering pump, electric air pump and direct current power supply at the same time.

4. The four-wheel hub driven electric bus driving system according to claim 1, characterized in that: The front suspension is provided with a tie rod for connecting the left and right suspension assemblies.

5. The four-wheel hub driven electric bus driving system according to claim 4, characterized in that: The front suspension and the rear suspension are provided with a coil spring damper assembly between two wheel hubs.

6. The four-wheel hub driven electric bus driving system according to claim 4, characterized in that: The front suspension is provided with a rocker arm between the wheel hubs on both sides and the tie rod, and the rocker arm is supported by a rocker arm bracket.

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