Electric all-terrain vehicle

Abstract

The invention discloses an electric all-terrain vehicle. The electric all-terrain vehicle comprises a vehicle frame, a suspension assembly, a walking assembly, a power system, a control execution system, a control module and a detection system. The power system comprises a motor controller and a motor, and the control execution system comprises an accelerator pedal, a brake pedal and a brake. The electric all-terrain vehicle further comprises a first braking mode and a second braking mode, the first braking mode is that the control module reduces the rotating speed of the walking assembly through the brake, and the second braking mode is that the control module reduces the rotating speed of the motor through the motor controller. Under the conditions that the current vehicle speed is larger than a preset speed threshold value and an accelerator pedal is not stepped on, the electric all-terrain vehicle is in a first braking mode, and if the current vehicle speed is smaller than or equal to the preset speed threshold value, the electric all-terrain vehicle is in a second braking mode. Through the arrangement, the abrasion of the brake and the motor is reduced.

Description

Technical Field

[0001] The invention relates to the field of vehicle engineering, in particular to an electric all-terrain vehicle. Background Art

[0002] All-terrain vehicles are vehicles that can travel on any terrain, and can move freely on terrain that is difficult for ordinary vehicles to maneuver. This type of vehicle has multiple uses and is not restricted by road conditions. It is widely used in North America and Western Europe, and its use is increasing year by year.

[0003] In addition to fuel-driven models, all-terrain vehicles also include electric-driven models (hereinafter referred to as electric all-terrain vehicles). At present, electric all-terrain vehicles mainly use two braking methods during the braking process: brake braking or motor braking. Braking by brakes is mainly done by pulling the handbrake or foot brake pedal to lock the brake disc, thereby reducing the speed of the wheel. Braking by motors is mainly done by switching the gear to a low speed gear and using the resistance of the motor when it is running to reduce the speed of the wheel.

[0004] Especially when the vehicle passes through a long downhill section, if the user continues to pull the handbrake or step on the brake pedal, it will cause serious wear on the brakes and related components.

[0005] If the user uses motor braking to reduce the vehicle speed. When the motor is in low gear, the motor speed is low. At this time, because the vehicle is driving on a downhill section, the deceleration effect of the vehicle is not obvious compared to a flat road. At this time, the motor speed is low, and the wheels are still at a high speed state, resulting in a large speed difference between the motor and the wheels. Due to the large speed difference between the motor and the wheels, the motor and related components are severely worn during a long downhill process.

[0006] It can be seen that in the prior art, especially when electric all-terrain vehicles are braking on long downhill sections, the motor or brake will cause great wear and tear. Currently, there is no more reliable means to reduce the wear and tear of the brake and motor when the electric all-terrain vehicle is braking on a long downhill section. Summary of the invention

[0007] In order to solve the deficiencies of the prior art, an object of the present invention is to provide an electric all-terrain vehicle, which has less wear on the motor and the brake when braking downhill.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] An electric all-terrain vehicle, the electric all-terrain vehicle comprises: a frame, a suspension assembly, a traveling assembly, a power system and a control execution system, the suspension assembly is connected to the frame, the traveling assembly is connected to the frame through the suspension assembly, the power system comprises a motor controller and a motor, the motor controller is connected to the motor, and the motor is in transmission connection with the traveling assembly, the control execution system comprises an accelerator pedal, a brake pedal and a brake, the accelerator pedal is used to control the output power of the motor, and the brake pedal controls the speed of the traveling assembly through the brake;

[0010] Furthermore, the electric all-terrain vehicle also includes: a control module and a detection system, the control module is communicatively connected to the motor controller, and the control module is also electrically connected to the brake. The electric all-terrain vehicle includes a first braking mode and a second braking mode. The first braking mode is that the control module reduces the rotation speed of the walking component through the brake, and the second braking mode is that the control module reduces the rotation speed of the motor through the motor controller. The detection system includes a speed detection module for detecting the current vehicle speed of the electric all-terrain vehicle. When the electric all-terrain vehicle is traveling on a downhill section and the accelerator pedal is not stepped on, if the current vehicle speed is greater than a preset speed threshold, the electric all-terrain vehicle is in the first braking mode, and if the current vehicle speed is less than or equal to the preset speed threshold, the electric all-terrain vehicle is in the second braking mode.

[0011] Furthermore, the detection system also includes an angle detection module, which is used to detect the pitch angle of the electric all-terrain vehicle. According to the angle threshold preset in the control module, if the pitch angle is greater than or equal to the preset angle threshold, the control module confirms that the electric all-terrain vehicle is on a downhill section.

[0012] Furthermore, the angle detection module is also used to detect the roll angle of the electric all-terrain vehicle. The control module determines the torque signal used to control the motor based on the pitch angle and the roll angle. The motor controller obtains the torque signal and controls the motor to perform corresponding deceleration operations.

[0013] Furthermore, the control module is connected to the speed detection module, the control module obtains the current vehicle speed through the speed detection module, the control module determines the speed difference according to the current vehicle speed and the preset target speed, the control module determines the torque signal according to the speed difference, the pitch angle and the roll angle, and the motor controller obtains the torque signal and controls the motor to perform corresponding deceleration operations.

[0014] Further, when the electric all-terrain vehicle is in the second braking mode, the motor controller reduces the rotation speed of the motor in response to the torque signal, so as to reduce the current vehicle speed of the electric all-terrain vehicle to a preset target vehicle speed.

[0015] Furthermore, when the current vehicle speed is greater than a preset vehicle speed threshold, the angle detection module is also used to detect the yaw angle of the electric all-terrain vehicle. The control module determines a braking signal for controlling the brake based on the yaw angle and the pitch angle. The brake locks the traveling component in response to the braking signal to reduce the rotation speed of the traveling component.

[0016] Furthermore, the angle detection module is also used to detect the roll angle of the electric all-terrain vehicle. When the current vehicle speed is greater than a preset vehicle speed threshold, the control module determines a braking signal based on the yaw angle, pitch angle and roll angle, and the brake locks the traveling component in response to the braking signal to reduce the rotation speed of the traveling component.

[0017] Furthermore, the detection system also includes a pedal detection module, which is used to detect whether the brake pedal is stepped on. When the electric all-terrain vehicle is in the first braking mode, if the pedal detection module detects that the brake pedal is stepped on, the control module controls the instrument panel of the electric all-terrain vehicle to execute a corresponding alarm display.

[0018] Furthermore, the pedal detection module is also used to detect the travel of the brake pedal when the brake pedal is stepped on. When the electric all-terrain vehicle is in the first braking mode, if the travel of the brake pedal is greater than or equal to a preset travel threshold, the control module controls the instrument panel of the electric all-terrain vehicle to execute a corresponding warning display.

[0019] Furthermore, the control module is one or any combination of the following: an electronic control unit, a vehicle controller and a body controller.

[0020] The electric all-terrain vehicle is provided with a speed detection module and a control module for detecting the current speed of the electric all-terrain vehicle. When the control module determines that the current speed of the electric all-terrain vehicle is greater than a preset speed threshold, the control module controls the brake to lock the travel component to reduce the speed of the electric all-terrain vehicle. When the control module determines that the current speed of the electric all-terrain vehicle is less than or equal to the preset speed threshold, the control module reduces the motor speed through the motor controller to reduce the speed of the electric all-terrain vehicle, thereby avoiding only using the brake to brake, resulting in increased brake wear and the travel component driving the motor to rotate due to the speed of the travel component being greater than the speed of the motor, resulting in increased motor wear, thereby reducing the wear of the brake and the wear of the motor, and extending the service life of the brake and the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an electric all-terrain vehicle in an embodiment of the present application;

[0022] Figure 2 This is a connection block diagram of the power system, the control execution system, the control module and the detection system in the implementation mode of this application;

[0023] Figure 3 This is a connection block diagram of the pedal detection module in the implementation manner of the present application;

[0024] Figure 4 This is a flow chart for determining the braking mode of an electric all-terrain vehicle in an embodiment of the present application;

[0025] Figure 5 This is a flow chart of the electric all-terrain vehicle in the first braking mode in the embodiment of the present application;

[0026] Figure 6 This is a flow chart of the electric all-terrain vehicle in the second braking mode according to the embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the specific implementation modes of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation modes of the present invention.

[0028] This application provides Figure 1 An electric all-terrain vehicle 100 is shown, and the electric all-terrain vehicle 100 includes a frame 11, a suspension assembly 12, and a travel assembly 13. The frame 11 constitutes the basic framework of the electric all-terrain vehicle 100, the suspension assembly 12 is connected to the frame 11, and the travel assembly 13 is connected to the frame 11 through the suspension assembly 12.

[0029] like Figure 2 As shown, further, the electric all-terrain vehicle 100 also includes a power system 14 and a control execution system 15. The power system 14 includes a motor controller 141 and a motor 142. The motor controller 141 is electrically connected to the motor 142. The motor 142 is transmission-connected to the travel assembly 13. The motor 142 drives the electric all-terrain vehicle 100 to travel by driving the travel assembly 13 to rotate. The motor controller 141 controls the speed of the motor 142 to control the travel speed of the electric all-terrain vehicle 100. The control execution system 15 includes an accelerator pedal 151, a brake pedal 152 and a brake 153. The accelerator pedal 151 is electrically connected to the motor controller 141. The motor controller 141 controls the output power of the motor 142 in response to the user's stepping operation on the accelerator pedal 151, thereby controlling the speed of the motor 142 and further controlling the speed of the travel assembly 13. The brake pedal 152 is connected to the brake 153. The brake 153 controls the speed of the travel assembly 13 in response to the user's stepping operation on the brake pedal 152. The brake 153 includes a brake caliper and a brake disc. The brake caliper is connected to the brake pedal 152 . The brake disc is at least partially disposed on the travel component 13 . The brake pedal 152 controls the brake caliper to lock the brake disc to reduce the rotation speed of the travel component 13 .

[0030] like Figure 2As shown, the electric all-terrain vehicle 100 further includes a control module 16, which is in communication with the motor controller 141, and the control module 16 controls the speed of the motor 142 through the motor controller 141. The control module 16 is also electrically connected to the brake 153, and the control module 16 controls the speed of the walking component 13 through the brake 153.

[0031] As an implementation, the electric all-terrain vehicle 100 includes a first braking mode and a second braking mode. In the first braking mode, the control module 16 reduces the rotation speed of the travel component 13 through the brake 153, that is, the control module 16 controls the brake caliper to lock the brake disc to reduce the rotation speed of the travel component 13. In the second braking mode, the control module 16 reduces the rotation speed of the travel component 13 through the motor controller 141, that is, the control module 16 reduces the rotation speed of the motor 142 through the motor controller 141 to reduce the rotation speed of the travel component 13.

[0032] like Figure 2 As shown, further, the electric all-terrain vehicle 100 also includes a detection system 17, the detection system 17 includes a speed detection module 171, the speed detection module 171 is electrically connected to the control module 16, the speed detection module 171 is used to detect the current vehicle speed of the electric all-terrain vehicle 100, and encapsulate the current vehicle speed as a detection signal to transmit to the control module 16.

[0033] Specifically, according to the speed threshold preset in the control module 16, when the electric all-terrain vehicle 100 is traveling on a downhill section, if the control module 16 determines that the current vehicle speed of the electric all-terrain vehicle 100 is greater than the preset speed threshold, and the accelerator pedal 151 is not stepped on, the electric all-terrain vehicle 100 is in the first braking mode, that is, when the current vehicle speed is greater than the preset speed threshold, the control module 16 controls the brake caliper to lock the brake disc to reduce the rotation speed of the travel component 13; if the control module 16 determines that the current vehicle speed of the electric all-terrain vehicle 100 is less than or equal to the preset speed threshold, the electric all-terrain vehicle 100 is in the second braking mode, that is, when the current vehicle speed is less than or equal to the preset speed threshold, the control module 16 reduces the rotation speed of the motor 142 through the motor controller 141 to reduce the rotation speed of the travel component 13. The control module 16 is one of the electronic control unit, the vehicle controller and the body controller, or any combination of the three; the speed detection module 171 is a Hall wheel speed sensor, which detects the rotation speed of the travel component 13 to obtain the current vehicle speed of the electric all-terrain vehicle 100. Optionally, the speed detection module 171 can also be configured as a magnetoelectric wheel speed sensor. The speed detection module 171 capable of realizing the above functions is within the protection scope required by the present application and will not be described in detail here.

[0034] In the related art, when the vehicle brakes on a downhill section, it is generally braked by the motor 142 or the brake 153. When the current speed of the electric all-terrain vehicle 100 is relatively high, the rotation speed of the traveling component 13 is relatively high, resulting in a relatively large speed difference between the traveling component 13 and the motor 142, which in turn causes the traveling component 13 to drive the motor 142 to rotate, causing the motor 142 to rotate at a relatively high speed, thereby increasing the wear of the motor 142. In addition, if the brake disc is locked only by the brake caliper to reduce the rotation speed of the traveling component 13, it is easy to cause increased wear of the brake caliper and the brake disc. Through the above arrangement, the wear of the motor 142 and the brake 153 is reduced, and the service life of the motor 142 and the brake 153 is extended.

[0035] It should be noted that the speed detection module 171 detects the current speed of the electric all-terrain vehicle 100 in real time. When the electric all-terrain vehicle 100 is in the first braking mode, if the control module 16 determines that the current speed of the electric all-terrain vehicle 100 is less than or equal to the preset speed threshold, the electric all-terrain vehicle 100 switches from the first braking mode to the second braking mode.

[0036] Exemplarily, the preset speed threshold is 60 km / h. When the current speed of the electric all-terrain vehicle 100 is greater than 60 km / h, the electric all-terrain vehicle 100 is in the first braking mode; when the current speed of the electric all-terrain vehicle 100 is less than or equal to 60 km / h, the electric all-terrain vehicle 100 is in the second braking mode.

[0037] like Figure 2 As shown, further, the detection system 17 also includes an angle detection module 172, which is electrically connected to the control module 16. The angle detection module 172 is used to detect the pitch angle of the electric all-terrain vehicle 100. The angle detection module 172 is also used to encapsulate the pitch angle into a detection signal and transmit it to the control module 16.

[0038] Specifically, according to the angle threshold preset in the control module 16, when the control module 16 determines that the pitch angle transmitted by the angle detection module 172 is greater than the preset angle threshold, the control module 16 confirms that the electric all-terrain vehicle 100 is in a downhill state; when the control module 16 determines that the pitch angle transmitted by the angle detection module 172 is less than or equal to the preset angle threshold, the electric all-terrain vehicle 100 is not in a downhill state, and the angle detection module 172 re-detects the pitch angle of the electric all-terrain vehicle 100. Among them, the angle detection module 172 is a six-axis sensor. It can be understood that the above setting can prevent the electric all-terrain vehicle 100 from mistakenly executing the first braking mode or the second braking mode when the electric all-terrain vehicle 100 is traveling on an uneven road surface, thereby improving the reliability of the electric all-terrain vehicle 100.

[0039] Optionally, the angle detection module 172 is further used to detect the roll angle of the electric all-terrain vehicle 100, and the angle detection module 172 is further used to encapsulate the roll angle into a detection signal and transmit it to the control module 16. When the electric all-terrain vehicle 100 performs the second braking mode, the control module 16 determines the torque signal of the motor 142 according to the pitch angle and the roll angle, and the control module 16 transmits the torque signal to the motor controller 141, and the motor controller 141 controls the motor 142 to perform a corresponding deceleration operation in response to the torque signal.

[0040] It should be noted that when the electric all-terrain vehicle 100 is traveling on a downhill section, the speed of the travel component 13 is higher than that of the motor 142, so the travel component 13 drives the motor 142 to rotate, which in turn causes the motor 142 to rotate at a higher speed, resulting in increased wear of the motor 142. The above configuration sends a torque signal to the motor controller 141 through the control module 16, so that the motor controller 141 actively reduces the speed of the motor 142 in response to the torque signal, thereby reducing the wear of the motor 142 and extending the service life of the motor 142.

[0041] Further, according to the target vehicle speed preset in the control module 16, after the speed detection module 171 detects the current vehicle speed of the electric all-terrain vehicle 100, the speed detection module 171 encapsulates the current vehicle speed as a detection signal and transmits it to the control module 16, and the control module 16 calculates the difference between the current vehicle speed and the preset target vehicle speed, thereby obtaining the vehicle speed difference of the electric all-terrain vehicle 100. The control module 16 determines the torque signal according to the vehicle speed difference, pitch angle and roll angle of the electric all-terrain vehicle 100, and the control module 16 transmits the torque signal to the motor controller 141, so that the motor controller 141 controls the motor 142 to perform a corresponding deceleration operation in response to the torque signal, that is, the motor controller 141 reduces the speed of the motor 142 in response to the torque signal, so that the current vehicle speed of the electric all-terrain vehicle 100 is reduced to the preset target vehicle speed.

[0042] It should be noted that, when the current speed of the electric all-terrain vehicle 100 is relatively high, if the current speed of the electric all-terrain vehicle 100 is reduced through the first braking mode, the motor 142 requires a larger reaction force to reduce its own rotation speed. When the current speed of the electric all-terrain vehicle 100 is relatively low, the motor 142 requires a smaller reaction force to reduce its own rotation speed. Therefore, the control module 16 determines the torque signal according to the difference between the current speed and the preset target speed, so that the motor controller 141 can more accurately control the motor 142 to reduce the rotation speed, thereby improving the accuracy of the electric all-terrain vehicle 100 when the electric all-terrain vehicle 100 is in the second braking mode.

[0043] For example, the preset target vehicle speed is 10 km / h, and the control module 16 calculates the difference between the current vehicle speed and 10 km / h to obtain the vehicle speed difference of the electric all-terrain vehicle 100 .

[0044] As an implementation, when the electric all-terrain vehicle 100 is in the first braking mode, the angle detection module 172 also detects the yaw angle of the electric all-terrain vehicle 100, and the angle detection module 172 also encapsulates the yaw angle as a detection signal and transmits it to the control module 16. The control module 16 determines a braking signal for controlling the brake 153 according to the yaw angle and pitch angle transmitted by the angle detection module 172, and the control module 16 transmits the braking signal to the brake 153, so that the brake 153 locks the travel component 13 in response to the braking signal, that is, the brake caliper locks the brake disc to reduce the rotation speed of the travel component 13, thereby reducing the current vehicle speed of the electric all-terrain vehicle 100.

[0045] It should be noted that when the electric all-terrain vehicle 100 brakes at a low speed, the yaw angle of the vehicle has little effect on the balance of the electric all-terrain vehicle 100; when the electric all-terrain vehicle 100 brakes at a high speed, the yaw angle of the vehicle has a greater effect on the balance of the electric all-terrain vehicle 100, which can easily cause the electric all-terrain vehicle 100 to swing or even lose control. Therefore, when the electric all-terrain vehicle 100 is in the first braking mode, the control module 16 needs to determine the braking signal for controlling the brake 153 according to the yaw angle of the electric all-terrain vehicle 100, thereby improving the safety of the electric all-terrain vehicle 100 during braking.

[0046] Further, when the electric all-terrain vehicle 100 is in the first braking mode, the angle detection module 172 detects the roll angle of the electric all-terrain vehicle 100, and the angle detection module 172 encapsulates the roll angle as a detection signal and transmits it to the control module 16. The control module 16 determines the braking signal for controlling the brake 153 according to the roll angle, the pitch angle and the yaw angle, and the control module 16 transmits the braking signal to the brake 153, so that the brake 153 locks the travel component 13 in response to the braking signal, that is, the brake caliper locks the brake disc, thereby reducing the rotation speed of the travel component 13, thereby reducing the current vehicle speed of the electric all-terrain vehicle 100. It can be understood that the braking signal obtained by the control module 16 according to the roll angle, the pitch angle and the yaw angle is more accurate than the braking signal obtained by the control module 16 according to the pitch angle and the yaw angle, thereby improving the accuracy of the electric all-terrain vehicle 100 when the electric all-terrain vehicle 100 is in the first braking mode.

[0047] like Figure 3As shown, as an implementation, the detection system 17 further includes a pedal detection module 173 , which is electrically connected to the control module 16 , and is used to detect whether the brake pedal 152 is stepped on.

[0048] Specifically, when the electric all-terrain vehicle 100 is in the first braking mode, if the pedal detection module 173 detects that the brake pedal 152 is in a stepped state, the pedal detection module 173 transmits the detection result to the control module 16, and the control module 16 controls the instrument panel 18 of the electric all-terrain vehicle 100 to perform a corresponding warning display.

[0049] Specifically, the pedal detection module 173 is a travel sensor, and the pedal detection module 173 is used to detect the travel of the brake pedal 152. According to the travel threshold preset by the control module 16, when the pedal travel is greater than or equal to the preset travel threshold, the pedal detection module 173 transmits the detection result to the control module 16, so that the control module 16 controls the instrument panel 18 of the electric all-terrain vehicle 100 to perform corresponding warning display according to the detection result. In this way, the problem of vehicle body imbalance caused by excessive braking force is avoided when the user continuously steps on the brake pedal 152 when the vehicle is in the braking state.

[0050] It should be noted that the stroke of the brake pedal 152 is the distance that the end of the brake pedal 152 close to the user moves when the brake pedal 152 is stepped on. Optionally, the stroke of the brake pedal 152 can also be the distance that the end of the brake pedal 152 close to the user moves in the height direction of the electric all-terrain vehicle 100 when the brake pedal 152 is stepped on.

[0051] Optionally, the pedal detection module 173 can also be a Hall sensor, a position sensor, a distance sensor, etc. The pedal detection module 173 that can achieve the above functions is within the protection scope required by this application and will not be described in detail here.

[0052] As an optional implementation, the instrument panel 18 of the electric all-terrain vehicle 100 includes a sound module (not shown), such as a buzzer, a speaker, etc. When the electric all-terrain vehicle 100 is in the first braking mode, if the pedal detection module 173 detects that the brake pedal 152 is stepped on, the control module 16 controls the sound module to emit a corresponding warning sound to remind the user to avoid the vehicle body being unbalanced during downhill braking.

[0053] Optionally, the dashboard 18 of the electric all-terrain vehicle 100 includes a lighting module (such as an LED light). When the electric all-terrain vehicle 100 is in the first braking mode, if the pedal detection module 173 detects that the brake pedal 152 is in a stepped state, the control module 16 controls the lighting module to start, so as to remind the user and avoid vehicle body imbalance during downhill braking.

[0054] It should be noted that when the electric all-terrain vehicle 100 is in the first braking mode, the control module 16 controls the brake 153 to lock the travel component 13 to reduce the rotation speed of the travel component 13. If the user steps on the brake pedal 152 at this time, the brake 153 will increase the braking force of the travel component 13. Since the current speed of the electric all-terrain vehicle 100 is relatively high, the above operation causes the current speed of the electric all-terrain vehicle 100 to decrease too quickly, causing the electric all-terrain vehicle 100 to easily swing or even lose control, reducing the safety of the electric all-terrain vehicle 100. Through the above settings, the safety of the electric all-terrain vehicle 100 in the first braking mode is improved.

[0055] In order to clearly illustrate the technical solution of the present application, the implementation mode of the present application also provides the following Figure 4 The flowchart of the judgment method shown in FIG. 1 is used to judge the braking mode of the electric all-terrain vehicle 100. The judgment method includes the following steps:

[0056] S101: Start;

[0057] S102: Detecting the current speed of the electric all-terrain vehicle 100;

[0058] The speed detection module 171 detects the current vehicle speed of the electric all-terrain vehicle 100 , and packages the current vehicle speed into a detection signal and transmits it to the control module 16 .

[0059] S103: Detecting the pitch angle of the electric all-terrain vehicle 100;

[0060] The angle detection module 172 detects the pitch angle of the electric all-terrain vehicle 100 , and packages the acquired pitch angle into a detection signal and transmits it to the control module 16 .

[0061] S104: Determine whether the pitch angle is greater than a preset angle threshold, if so, execute step S105, if not, execute step S103;

[0062] S105: Determine whether the current vehicle speed is greater than a preset speed threshold, if so, execute step S106, if not, execute step S107;

[0063] S106: the electric all-terrain vehicle 100 executes a first braking mode;

[0064] The control module 16 reduces the rotation speed of the travel component 13 through the brake 153 .

[0065] S107: the electric all-terrain vehicle 100 executes the second braking mode;

[0066] The control module 16 reduces the rotation speed of the travel component 13 through the motor controller 141 .

[0067] S108: End.

[0068] It should be noted that although the steps in the above process or the flowchart in the accompanying drawings show a logical order, in some cases, the steps shown or described may be executed in an order different from that shown or described here.

[0069] like Figure 5 As shown, further, the electric all-terrain vehicle 100 executes the first braking mode including the following steps:

[0070] S201: Start;

[0071] S202: the electric all-terrain vehicle 100 executes a first braking mode;

[0072] S203: Detecting the yaw angle of the electric all-terrain vehicle 100;

[0073] The angle detection module 172 detects the yaw angle of the electric all-terrain vehicle 100 , and packages the acquired yaw angle into a detection signal and transmits it to the control module 16 .

[0074] S204: Detecting the roll angle of the electric all-terrain vehicle 100;

[0075] The angle detection module 172 detects the roll angle of the electric all-terrain vehicle 100 , and packages the acquired roll angle into a detection signal and transmits it to the control module 16 .

[0076] S205: Determine a braking signal according to the yaw angle, the pitch angle, and the roll angle;

[0077] The control module 16 determines a braking signal according to the yaw angle, the pitch angle, and the roll angle, and sends the braking signal to the brake 153 .

[0078] S206: the brake 153 reduces the speed of the electric all-terrain vehicle 100 in response to the brake signal;

[0079] S207: End.

[0080] It should be noted that although the steps in the above process or the flowchart in the accompanying drawings show a logical order, in some cases, the steps shown or described may be executed in an order different from that shown or described here.

[0081] like Figure 6 As shown, further, the electric all-terrain vehicle 100 executes the second braking mode including the following steps:

[0082] S301: Start;

[0083] S302: the electric all-terrain vehicle 100 executes the second braking mode;

[0084] S303: Detecting the roll angle of the electric all-terrain vehicle 100;

[0085] The angle detection module 172 detects the roll angle of the electric all-terrain vehicle 100 , and packages the acquired roll angle into a detection signal and transmits it to the control module 16 .

[0086] S304: Detecting the current speed of the electric all-terrain vehicle 100;

[0087] The speed detection module 171 detects the current vehicle speed of the electric all-terrain vehicle 100 , and packages the acquired current vehicle speed into a detection signal and transmits it to the control module 16 .

[0088] S305: Calculating a vehicle speed difference according to the current vehicle speed and a preset target vehicle speed;

[0089] The control module 16 calculates the vehicle speed difference according to the current vehicle speed and the preset target vehicle speed.

[0090] S306: determining a torque signal according to the vehicle speed difference, the pitch angle, and the roll angle;

[0091] The control module 16 determines a torque signal according to the vehicle speed difference pitch angle and roll angle, and transmits the torque signal to the motor controller 141 .

[0092] S307: the motor controller 141 reduces the rotation speed of the motor in response to the torque signal to reduce the speed of the electric all-terrain vehicle;

[0093] S308: End.

[0094] It should be noted that although the steps in the above process or the flowchart in the accompanying drawings show a logical order, in some cases, the steps shown or described may be executed in an order different from that shown or described here.

[0095] In summary, when the electric all-terrain vehicle 100 is traveling on a downhill section and the accelerator pedal 151 is not stepped on, if the control module 16 determines that the current speed of the electric all-terrain vehicle 100 is greater than the preset speed threshold, the control module 16 controls the brake 153 to lock the walking component 13 to reduce the current speed of the electric all-terrain vehicle 100; if the control module 16 determines that the current speed of the electric all-terrain vehicle 100 is less than or equal to the preset speed threshold, the electric all-terrain vehicle 100 reduces the speed of the motor 142 through the motor controller 141 to reduce the current speed of the electric all-terrain vehicle 100, thereby avoiding using only the brake 153 to reduce the current speed of the electric all-terrain vehicle 100, resulting in increased wear of the brake 153, thereby reducing the wear of the brake 153 and extending the service life of the brake 153. In addition, the above-mentioned setting can also avoid the wear of the motor 142 caused by the high current speed of the electric all-terrain vehicle 100, which causes the walking component 13 to drive the motor 142 to rotate, thereby causing the motor 142 to rotate at a high speed, thereby reducing the wear of the motor 142 and extending the service life of the motor 142.

[0096] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An electric all-terrain vehicle, comprising: Frame; a suspension assembly connected to the vehicle frame; A traveling assembly, wherein the traveling assembly is connected to the vehicle frame via the suspension assembly; A power system, the power system comprising a motor controller and a motor, the motor controller is connected to the motor, and the motor is transmission-connected to the travel assembly; A control execution system, the control execution system comprising an accelerator pedal, a brake pedal and a brake, the accelerator pedal is used to control the output power of the motor, and the brake pedal controls the speed of the travel component through the brake; Characterized in that the electric all-terrain vehicle also includes: A control module, the control module is communicatively connected with the motor controller, the control module is also electrically connected with the brake, the electric all-terrain vehicle includes a first braking mode and a second braking mode, the first braking mode is that the control module reduces the rotation speed of the travel component through the brake, and the second braking mode is that the control module reduces the rotation speed of the motor through the motor controller; A detection system, the detection system includes a speed detection module for detecting the current vehicle speed of the electric all-terrain vehicle. When the electric all-terrain vehicle is traveling on a downhill section and the accelerator pedal is not stepped on, if the current vehicle speed is greater than a preset speed threshold, the electric all-terrain vehicle is in the first braking mode; if the current vehicle speed is less than or equal to the preset speed threshold, the electric all-terrain vehicle is in the second braking mode.

2. The electric all-terrain vehicle according to claim 1, characterized in that: The detection system also includes an angle detection module, which is used to detect the pitch angle of the electric all-terrain vehicle. According to the angle threshold preset in the control module, if the pitch angle is greater than or equal to the preset angle threshold, the control module confirms that the electric all-terrain vehicle is on a downhill section.

3. The electric all-terrain vehicle according to claim 2, characterized in that: The angle detection module is also used to detect the roll angle of the electric all-terrain vehicle. The control module determines a torque signal for controlling the motor according to the pitch angle and the roll angle. The motor controller obtains the torque signal and controls the motor to perform a corresponding deceleration operation.

4. The electric all-terrain vehicle according to claim 3, characterized in that: The control module is connected to the speed detection module, the control module obtains the current vehicle speed through the speed detection module, the control module determines the vehicle speed difference according to the current vehicle speed and a preset target vehicle speed, the control module determines the torque signal according to the vehicle speed difference, the pitch angle and the roll angle, and the motor controller obtains the torque signal and controls the motor to perform a corresponding deceleration operation.

5. The electric all-terrain vehicle according to claim 4, characterized in that: When the electric ATV is in the second braking mode, the motor controller reduces the rotation speed of the motor in response to the torque signal to reduce the current vehicle speed of the electric ATV to the preset target vehicle speed.

6. The electric all-terrain vehicle according to claim 2, characterized in that: When the current vehicle speed is greater than the preset vehicle speed threshold, the angle detection module is also used to detect the yaw angle of the electric all-terrain vehicle, and the control module determines a braking signal for controlling the brake according to the yaw angle and the pitch angle. The brake locks the traveling component in response to the braking signal to reduce the rotation speed of the traveling component.

7. The electric all-terrain vehicle according to claim 6, characterized in that: The angle detection module is also used to detect the roll angle of the electric all-terrain vehicle. When the current vehicle speed is greater than the preset vehicle speed threshold, the control module determines the braking signal according to the yaw angle, the pitch angle and the roll angle, and the brake locks the traveling component in response to the braking signal to reduce the rotation speed of the traveling component.

8. The electric all-terrain vehicle according to claim 1, characterized in that: The detection system also includes a pedal detection module, which is used to detect whether the brake pedal is stepped on. When the electric all-terrain vehicle is in the first braking mode, if the pedal detection module detects that the brake pedal is stepped on, the control module controls the instrument panel of the electric all-terrain vehicle to perform a corresponding warning display.

9. The electric all-terrain vehicle according to claim 8, characterized in that: The pedal detection module is also used to detect the stroke of the brake pedal when the brake pedal is stepped on. When the electric all-terrain vehicle is in the first braking mode, if the stroke of the brake pedal is greater than or equal to a preset stroke threshold, the control module controls the instrument panel of the electric all-terrain vehicle to perform a corresponding warning display.

10. The electric all-terrain vehicle according to claim 1, characterized in that: The control module is one of the following or any combination thereof: an electronic control unit, a vehicle controller and a body controller.

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