Power take-off function control system, power take-off function control method and vehicle

Abstract

The invention relates to a power take-off function control system, a power take-off function control method and a vehicle, and relates to the technical field of vehicles. The system comprises a power take-off switch, a power take-off controller, a whole vehicle controller, a power take-off motor controller and a power take-off motor. Wherein the power takeoff controller sends a power takeoff function request to the vehicle control unit after the power takeoff switch is activated; the vehicle control unit responds to the power take-off function request to detect the vehicle state, and under the condition that the vehicle state meets the power take-off function enabling condition, a function enabling command is sent to the power take-off controller; the power take-off controller forwards the function enabling command to a power take-off motor controller; the power take-off motor controller controls the power take-off motor to operate according to the function enabling command; and the power take-off motor controls the working device to execute lifting operation or falling operation. The problem that an electric drive axle vehicle without a power takeoff cannot achieve the power takeoff function can be solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a power take-off function control system, a power take-off function control method and a vehicle. Background Art

[0002] In certain use scenarios, there is a need for tractor vehicles to lift and lower trailers. However, due to mechanical structure, vehicle design and other reasons, the electric drive axle of some models does not have an integrated power take-off function, making it impossible to lift and lower trailers. Summary of the invention

[0003] Based on this, it is necessary to provide a power take-off function control system, a power take-off function control method and a vehicle to address the above technical problems, which can solve the problem that electric drive axle vehicles without power take-offs cannot realize the power take-off function.

[0004] In a first aspect, the present application provides a power take-off function control system, the system comprising a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller and a power take-off motor; wherein:

[0005] The power take-off controller is used to send a power take-off function request to the vehicle controller after the power take-off switch is activated;

[0006] The vehicle controller is used to detect the vehicle state in response to the power take-off function request, and send a function enable command to the power take-off controller when the vehicle state meets the power take-off function enable condition;

[0007] The power take-off controller is further used to forward the function enable command to the power take-off motor controller;

[0008] A power take-off motor controller, used to control the operation of the power take-off motor according to a function enable command;

[0009] The power take-off motor is used to control the working device to perform lifting or lowering operations.

[0010] In one of the embodiments, the power take-off controller is further used to determine a target speed according to a current accelerator pedal opening, and send the target speed to the power take-off motor controller;

[0011] The power take-off motor controller is also used to control the power take-off motor to reach a target speed.

[0012] In one of the embodiments, the vehicle controller is also used to send a function enable command to the power take-off controller when the vehicle high voltage is powered on, the power take-off relay is closed, the power take-off motor is normal, the vehicle is stationary, the current gear is neutral, no charging connection signal is detected, the parking function is activated, and the remaining power is greater than the set value.

[0013] In one of the embodiments, the power take-off controller is further configured to send a brake signal to the power take-off motor controller when it is detected that the brake pedal is in a depressed state;

[0014] The power take-off motor controller is also used to control the power take-off motor to suspend operation according to a brake signal.

[0015] In one of the embodiments, the power take-off controller is further configured to send a non-braking signal to the power take-off motor controller when it is detected that the brake pedal is in a released state;

[0016] The power take-off motor controller is also used to control the power take-off motor to continue running according to the non-braking signal.

[0017] In one of the embodiments, the system further comprises a meter;

[0018] The power take-off motor controller is also used to detect the working state of the power take-off motor and send the working state of the power take-off motor to the power take-off controller;

[0019] The power take-off controller is also used to forward the working status of the power take-off motor to the vehicle controller and instrument;

[0020] The instrument is used to display the working status of the power take-off motor.

[0021] In one of the embodiments, the power take-off motor controller is further used to control the power take-off motor to stop running when it is detected that the power take-off motor is in an abnormal state, and to feedback the abnormal state to the vehicle controller and the instrument through the power take-off controller;

[0022] The vehicle controller is also used to exit the power take-off function enabling state according to an abnormal state;

[0023] The instrument is also used to display abnormal conditions.

[0024] In one of the embodiments, the power take-off controller is further used to stop sending a power take-off function request to the vehicle controller after the power take-off switch is turned off;

[0025] The vehicle controller is also used to exit the power take-off function enable state and send a function stop enable command to the power take-off controller;

[0026] The power take-off controller is further used to forward the function stop enable command to the power take-off motor controller;

[0027] The power take-off motor controller is also used to control the power take-off motor to stop running according to a function stop enable command.

[0028] In a second aspect, the present application further provides a power take-off function control method, which is applied to the power take-off function control system as described above, wherein the system includes a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller, and a power take-off motor; the method includes:

[0029] After the power take-off switch is activated, the power take-off controller sends a power take-off function request to the vehicle controller;

[0030] The vehicle controller detects the vehicle state in response to the power take-off function request, and sends a function enable command to the power take-off controller when the vehicle state meets the power take-off function enable condition;

[0031] The power take-off controller forwards the function enable command to the power take-off motor controller;

[0032] The power take-off motor controller controls the operation of the power take-off motor according to the function enable command;

[0033] The power take-off motor controls the working device to perform lifting or lowering operations.

[0034] In a third aspect, the present application also provides a vehicle, wherein the vehicle is equipped with the power take-off function control system as described above.

[0035] The above-mentioned power take-off function control system, power take-off function control method and vehicle, the system includes a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller and a power take-off motor; wherein: after the power take-off switch is activated, the power take-off controller sends a power take-off function request to the vehicle controller; the vehicle controller detects the vehicle status in response to the power take-off function request, and sends a function enable command to the power take-off controller when the vehicle status meets the power take-off function enablement conditions; the power take-off controller forwards the function enable command to the power take-off motor controller; the power take-off motor controller controls the operation of the power take-off motor according to the function enablement command; the power take-off motor controls the working device to perform a lifting operation or a lowering operation. Through the above-mentioned method, the power take-off controller is used as an interactive interface between the vehicle end and the power take-off motor to realize information interaction between the vehicle controller and the power take-off motor and transmit the power take-off demand; the power take-off motor is used as an actuator of the power take-off function to control the working device to perform a lifting operation or a lowering operation, thereby solving the problem that the electric drive axle vehicle without a power take-off cannot realize the power take-off function. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] FIG1 is a schematic structural diagram of a power take-off function control system in one embodiment;

[0038] FIG2 is a schematic diagram of a power take-off function control flow chart in one embodiment;

[0039] FIG3 is a signaling flow chart of a power take-off function control system in one embodiment;

[0040] FIG4 is a schematic flow chart of a method for controlling a power take-off function in one embodiment;

[0041] FIG. 5 is a schematic diagram of the structure of a vehicle in one embodiment. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] In an exemplary embodiment, as shown in FIG1 , a power take-off function control system is provided, the system comprising a power take-off switch 102 , a power take-off controller 104 , a vehicle controller 106 , a power take-off motor controller 108 and a power take-off motor 110 ; wherein:

[0044] The power take-off controller 104 is used to send a power take-off function request to the vehicle controller 106 after the power take-off switch 102 is activated.

[0045] Among them, the power take-off controller 104 is respectively connected to the power take-off switch 102 and the vehicle control unit 106 (VCU), and after detecting that the power take-off switch 102 is activated, it sends a power take-off function request to the vehicle control unit 106. It can be understood that the vehicle control unit 106 (VCU) is the controller originally configured for the vehicle, and the power take-off switch 102, the power take-off controller 104, the power take-off motor controller 108 and the power take-off motor 110 are components additionally provided on the vehicle in order to realize the power take-off function in the embodiment of the present application. Optionally, the power take-off controller 104 is connected to the vehicle control unit 106 through a CAN line.

[0046] In one implementation, the power take-off controller 104 collects the driver's demand for the power take-off function through the power take-off switch 102, identifies the activation state or the shutdown state of the power take-off switch 102, and requests or stops the power take-off motor 110 from the vehicle controller 106 according to the activation state or the shutdown state of the power take-off switch 102.

[0047] It is understandable that the power take-off switch 102 is disposed in the cab. Optionally, the power take-off switch 102 is a switch of the type of a button switch, a toggle switch, etc., and the power take-off controller 104 is connected to the power take-off switch 102 via a hard line. Optionally, the power take-off switch 102 is a soft switch integrated into the vehicle interface, and the power take-off controller 104 communicates with the power take-off switch 102 via a CAN line.

[0048] The vehicle controller 106 is used to detect the vehicle state in response to the power take-off function request, and send a function enable command to the power take-off controller 104 when the vehicle state meets the power take-off function enablement condition.

[0049] The vehicle controller 106 collects vehicle state parameters through various sensors installed on the vehicle, and detects whether the current vehicle state meets the power take-off function enabling conditions according to the vehicle state parameters. When it is detected that the vehicle state meets the power take-off function enabling conditions, the power take-off function enabling state is entered, and a function enabling command is sent to the power take-off controller 104. If the vehicle state does not meet the power take-off function enabling conditions, the function enabling command is rejected, and a relevant reminder is sent to the driver through the vehicle computer interface or the instrument 112.

[0050] In one implementation, the power take-off function request sent by the power take-off controller 104 carries the state of the power take-off motor 110, and the state of the power take-off motor 110 is sent to the power take-off controller 104 by the power take-off motor controller 108. The vehicle controller 106 can determine the condition of the power take-off motor 110 based on the state of the power take-off motor 110, thereby determining whether to enable the power take-off function. In one implementation, if the power take-off motor 110 is abnormal, the function enable command is rejected.

[0051] The power take-off controller 104 is further configured to forward the function enable command to the power take-off motor controller 108 .

[0052] Among them, the power take-off controller 104 can, on the one hand, learn the driver's demand for the use of the power take-off function, and on the other hand, can perform interactive routing between the vehicle end and the power take-off motor controller 108, and forward the function enable command issued by the vehicle controller 106 to the power take-off motor controller 108. Optionally, the power take-off controller 104 and the power take-off motor controller 108 communicate via a private CAN.

[0053] The power take-off motor controller 108 is used to control the operation of the power take-off motor 110 according to the function enable command.

[0054] Among them, a power take-off relay is provided between the power take-off motor 110 and the power supply device, and the vehicle controller 106 controls the power take-off relay to be turned on in response to the power take-off function request, so as to supply power to the power take-off motor 110. After receiving the function enable command, the power take-off motor controller 108 controls the power take-off motor 110 to operate. Optionally, the power take-off motor controller 108 controls the power take-off motor 110 to operate at a set speed. Optionally, the power take-off motor controller 108 can also adjust the speed of the power take-off motor 110. Optionally, the power take-off motor controller 108 can also adjust the rotation direction of the power take-off motor 110.

[0055] In one implementation, when the power take-off switch 102 is in an activated state, the power take-off controller 104 sends a power take-off function request to the vehicle controller 106 at regular intervals. If the vehicle controller 106 does not receive a power take-off function request within a certain period of time, it exits the function enable state and stops issuing function enable commands. If the power take-off motor controller 108 does not receive a function enable command within a certain period of time, it controls the power take-off motor 110 to stop running. Optionally, before controlling the power take-off motor 110 to stop running, the power take-off motor controller 108 controls the working device to return to the initial position through the power take-off motor 110.

[0056] The power take-off motor 110 is used to control the working device to perform a lifting operation or a lowering operation.

[0057] Among them, a transmission system is provided between the power take-off motor 110 and the working device, such as a conveyor belt, a chain, a screw, etc., to transmit the torque to the working device through the transmission system so that the working device performs a lifting operation or a lowering operation. The working device can be a trailer or a mechanical arm, which is not limited in this application. Through the implementation method of this embodiment, the power take-off function can be realized on a vehicle without a power take-off electric drive bridge.

[0058] It is understandable that the power take-off motor controller 108 can control the working device to perform a lifting operation by increasing the speed of the power take-off motor 110, and can control the working device to perform a lowering operation by reducing the speed of the power take-off motor 110. Optionally, the power take-off motor controller 108 can control the working device to change from a lifting operation to a lowering operation, or from a lowering operation to a lifting operation, by changing the rotation direction of the power take-off motor 110.

[0059] The above-mentioned power take-off function control system includes a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller and a power take-off motor; wherein: after the power take-off switch is activated, the power take-off controller sends a power take-off function request to the vehicle controller; the vehicle controller detects the vehicle status in response to the power take-off function request, and sends a function enable command to the power take-off controller when the vehicle status meets the power take-off function enablement conditions; the power take-off controller forwards the function enable command to the power take-off motor controller; the power take-off motor controller controls the operation of the power take-off motor according to the function enablement command; the power take-off motor controls the working device to perform lifting or lowering operations. Through the above-mentioned method, the power take-off controller is used as an interactive interface between the vehicle end and the power take-off motor to realize information interaction between the vehicle controller and the power take-off motor and transmit the power take-off demand; the power take-off motor is used as an actuator of the power take-off function to control the working device to perform lifting or lowering operations, thereby solving the problem that electric drive axle vehicles without power take-offs cannot realize the power take-off function.

[0060] In an exemplary embodiment, the power take-off controller 104 is further used to determine a target speed according to the current accelerator pedal opening, and send the target speed to the power take-off motor controller 108; the power take-off motor controller 108 is further used to control the power take-off motor 110 to reach the target speed.

[0061] Among them, the memory corresponding to the power take-off controller 104 stores a mapping relationship table between the motor speed and the accelerator pedal opening. After obtaining the current accelerator pedal opening, the target speed of the power take-off motor 110 is determined by looking up the table, and the power take-off motor controller 108 controls the speed of the power take-off motor 110 according to the target speed. Optionally, the power take-off motor controller 108 collects the actual speed of the motor and performs closed-loop regulation and control on the speed of the power take-off motor 110 according to the difference between the actual speed of the motor and the target speed. In one implementation, when the accelerator pedal opening is 0%, the power take-off motor 110 runs at a constant speed at a set minimum speed.

[0062] It is understandable that the power take-off controller 104 can obtain the current accelerator pedal opening from the vehicle controller 106, and can also directly read the current accelerator pedal opening from the CAN line. The power take-off controller 104 obtains the accelerator pedal opening in real time to achieve dynamic control of the speed of the power take-off motor 110.

[0063] Optionally, the driver increases the accelerator pedal opening by stepping on the accelerator pedal, and increases the speed of the power take-off motor 110 through the power take-off function control system of the embodiment of the present application, thereby controlling the working device to perform a lifting operation. The driver reduces the accelerator pedal opening by releasing the accelerator pedal, and reduces the speed of the power take-off motor 110 through the power take-off function control system of the embodiment of the present application, thereby controlling the working device to perform a landing operation. It can be understood that, taking the working device as a trailer as an example, when the speed of the power take-off motor 110 is relatively low, the lifting force generated is less than the weight of the trailer, and the trailer maintains the initial position or performs a landing operation; when the speed of the power take-off motor 110 is relatively high, the lifting force generated is greater than the weight of the trailer, and the trailer performs a lifting operation.

[0064] In this embodiment, the accelerator pedal opening of the vehicle is associated with the rotation speed of the power take-off motor 110, which can adapt to the driver's behavior habits and control the lifting or lowering of the working device according to the driver's intention, thereby improving the control accuracy of the power take-off function.

[0065] In an exemplary embodiment, the vehicle controller 106 is also used to send a function enable command to the power take-off controller 104 when the vehicle high voltage is powered on, the power take-off relay is closed, the power take-off motor 110 is normal, the vehicle is stationary, the current gear is neutral, no charging connection signal is detected, the parking function is activated, and the remaining power is greater than the set value.

[0066] Among them, when the power take-off switch 102 is activated and the vehicle controller 106 detects that the following conditions are met at the same time, the vehicle controller 106 issues a function enable command: the vehicle high voltage is powered on, the power take-off relay is closed, the power take-off motor 110 is normal, the vehicle is stationary, the current gear is neutral, no charging connection signal is detected, the parking function is started, and the remaining power is greater than the set value.

[0067] Optionally, when the main negative relay and the DCDC relay are detected to be closed, it is determined that the vehicle high voltage is powered on. The power take-off motor 110 is normal, which means that the power take-off motor 110 feedback is not working and there is no third-level fault. The charging connection signal refers to the charging gun connection signal. If the handbrake is pulled, it indicates that the parking function is activated. The remaining power is determined by detecting the battery SOC.

[0068] In an exemplary embodiment, the power take-off controller 104 is further used to send a braking signal to the power take-off motor controller 108 when it is detected that the brake pedal is in a depressed state; the power take-off motor controller 108 is further used to control the power take-off motor 110 to suspend operation according to the braking signal.

[0069] Among them, when the working device performs a lifting operation or a lowering operation, the power take-off controller 104 obtains a brake pedal signal. When the brake pedal signal indicates that the brake pedal is in a depressed state, the power take-off motor 110 is controlled by the power take-off motor controller 108 to pause the current action to adapt to different working scene requirements.

[0070] It is understandable that the power take-off controller 104 can obtain the brake pedal signal from the vehicle controller 106 or directly read the brake pedal signal from the CAN line. The power take-off controller 104 obtains the brake pedal signal in real time to dynamically control the speed of the power take-off motor 110.

[0071] In an exemplary embodiment, the power take-off controller 104 is further used to send an unbraked signal to the power take-off motor controller 108 when it is detected that the brake pedal is in a released state; the power take-off motor controller 108 is further used to control the power take-off motor 110 to continue operating according to the unbraked signal.

[0072] Among them, during the pause of the power take-off motor 110, the power take-off controller 104 obtains the brake pedal signal. When the brake pedal signal indicates that the brake pedal is in a released state, the power take-off motor 110 is controlled by the power take-off motor controller 108 to continue running to adapt to different working scene requirements.

[0073] In an exemplary embodiment, referring to FIG. 1 , the system further includes an instrument 112 ; the power take-off motor controller 108 is further used to detect the working state of the power take-off motor 110 and send the working state of the power take-off motor 110 to the power take-off controller 104 ; the power take-off controller 104 is further used to forward the working state of the power take-off motor 110 to the vehicle controller 106 and the instrument 112 ; the instrument 112 is used to display the working state of the power take-off motor 110 .

[0074] Optionally, the working state of the power take-off motor 110 includes a normal state and an abnormal state. Among them, the power take-off motor controller 108 collects the voltage, current, temperature, speed and other physical quantities of the power take-off motor 110 in real time, determines whether there are faults such as over-temperature, over-voltage, under-voltage, over-current, stall, communication loss, etc., and feeds back to the vehicle controller 106 and the instrument 112. The instrument 112 displays the working state of the power take-off motor 110. The vehicle controller 106 decides whether to continue to send the function enable command according to the working state of the power take-off motor 110.

[0075] In an exemplary embodiment, the power take-off motor controller 108 is also used to control the power take-off motor 110 to stop running when it is detected that the power take-off motor 110 is in an abnormal state, and to feedback the abnormal state to the vehicle controller 106 and the instrument 112 through the power take-off controller 104; the vehicle controller 106 is also used to exit the power take-off function enabling state according to the abnormal state; the instrument 112 is also used to display the abnormal state.

[0076] The abnormal state may be at least one of over-temperature, over-voltage, under-voltage, over-current, stall, communication loss, etc. of the power take-off motor 110. The vehicle controller 106 exits the power take-off function enabled state, stops enabling the power take-off motor 110, and controls the power take-off motor 110 to stop running. The instrument 112 displays the abnormal state of the power take-off motor 110 to prompt the driver with fault information.

[0077] In an exemplary embodiment, the power take-off controller 104 is also used to stop sending a power take-off function request to the vehicle controller 106 after the power take-off switch 102 is turned off; the vehicle controller 106 is also used to exit the power take-off function enable state and send a function stop enable command to the power take-off controller 104; the power take-off controller 104 is also used to forward the function stop enable command to the power take-off motor controller 108; the power take-off motor controller 108 is also used to control the power take-off motor 110 to stop running according to the function stop enable command.

[0078] When the driver needs to turn off the power take-off function, the power take-off switch 102 is turned off, and the power take-off controller 104 detects the closed state of the power take-off switch 102 and stops sending the power take-off function request to the vehicle controller 106. The vehicle controller 106 exits the power take-off function enabled state. The power take-off controller 104 gradually reduces the speed of the power take-off motor 110. After the power take-off motor 110 stops working, the non-working state of the power take-off motor 110 is fed back to the vehicle controller 106 through the power take-off controller 104. The vehicle controller 106 can then control the power take-off relay to disconnect, so as to disconnect the power supply of the power take-off motor 110, and the power take-off function is exited.

[0079] In an exemplary embodiment, referring to FIG. 2 , FIG. 2 is a schematic diagram of a power take-off function control process in an embodiment; wherein, the driver activates the power take-off switch; the power take-off controller sends a power take-off function request; the vehicle controller determines whether the power take-off function enabling conditions are met; if so, a function enabling command is sent; the power take-off motor controller controls the operation of the power take-off motor, and the instrument displays the power take-off working status.

[0080] If the brake pedal is pressed, the power take-off motor controller controls the power take-off motor to suspend operation; if the brake pedal is released, the power take-off motor controller controls the power take-off motor to continue operation.

[0081] If the power take-off motor controller detects a level 3 motor fault (level 3 is a serious fault, divided according to the severity of the fault), the power take-off motor will be controlled to stop working; the vehicle controller will stop enabling the power take-off function, and the instrument will display a power take-off fault; the power take-off relay will be disconnected, and the power take-off function will exit.

[0082] The driver turns off the power take-off switch, and the power take-off controller stops sending power take-off function requests; the vehicle controller stops enabling the power take-off function; the power take-off motor stops working and feeds back the non-working status to the vehicle controller.

[0083] In an exemplary embodiment, referring to FIG. 3 , FIG. 3 is a signaling flow chart of a power take-off function control system in an embodiment; wherein, after the power take-off switch is activated, the power take-off controller sends a power take-off function request to the vehicle controller, and the power take-off controller obtains the motor status from the power take-off motor controller and forwards it to the vehicle controller. The vehicle controller determines whether the power take-off function enabling conditions are met, and if so, sends a function enabling command to the power take-off controller. The power take-off controller forwards it to the power take-off motor controller to control the power supply of the power take-off motor. The power take-off controller detects the working status of the power take-off motor and feeds it back to the power take-off controller. The power take-off controller forwards the working status of the power take-off motor to the vehicle controller and the instrument.

[0084] After the power take-off switch is turned off, the power take-off controller stops the power take-off function request, and the vehicle controller stops the function enable. The power take-off controller forwards the function stop enable command to the power take-off motor controller, and the power take-off motor controller controls the power take-off motor to stop working. The power take-off motor controller feeds back the motor non-working state to the power take-off controller. The power take-off controller forwards the motor non-working state to the vehicle controller and the instrument.

[0085] Based on the same inventive concept, the embodiment of the present application also provides a power take-off function control method for use in the power take-off function control system involved above. The implementation solution provided by the method to solve the problem is similar to the implementation solution recorded in the above method, so the specific limitations in one or more power take-off function control method embodiments provided below can refer to the limitations of the power take-off function control system above, and will not be repeated here.

[0086] In an exemplary embodiment, as shown in FIG4 , a power take-off function control method is provided, the method is applied to the power take-off function control system as described in any one of the above embodiments, the system includes a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller and a power take-off motor; the method includes:

[0087] Step 402: After the power take-off switch is activated, the power take-off controller sends a power take-off function request to the vehicle controller.

[0088] Step 404 , the vehicle controller detects the vehicle state in response to the power take-off function request, and sends a function enable command to the power take-off controller when the vehicle state satisfies the power take-off function enable condition.

[0089] Step 406 : The power take-off controller forwards the function enable command to the power take-off motor controller.

[0090] Step 408 : The power take-off motor controller controls the operation of the power take-off motor according to the function enable command.

[0091] Step 410: The power take-off motor controls the working device to perform a lifting operation or a lowering operation.

[0092] In an exemplary embodiment, after step 404, the method further includes: the power take-off controller determines a target speed according to the current accelerator pedal opening, and sends the target speed to the power take-off motor controller; the power take-off motor controller controls the power take-off motor to reach the target speed.

[0093] In an exemplary embodiment, step 404 includes: the vehicle controller sends a function enable command to the power take-off controller when the vehicle high voltage is powered on, the power take-off relay is closed, the power take-off motor is normal, the vehicle is stationary, the current gear is neutral, no charging connection signal is detected, the parking function is activated, and the remaining power is greater than the set value.

[0094] In an exemplary embodiment, after step 404, the method further includes: when the power take-off controller detects that the brake pedal is in a depressed state, sending a braking signal to the power take-off motor controller; and the power take-off motor controller controls the power take-off motor to suspend operation according to the braking signal.

[0095] In an exemplary embodiment, the method further includes: when the power take-off controller detects that the brake pedal is in a released state, sending an unbraked signal to the power take-off motor controller; and the power take-off motor controller controls the power take-off motor to continue running according to the unbraked signal.

[0096] In an exemplary embodiment, the system also includes an instrument; the method also includes: the power take-off motor controller detects the working status of the power take-off motor and sends the working status of the power take-off motor to the power take-off controller; the power take-off controller forwards the working status of the power take-off motor to the vehicle controller and the instrument; and the instrument displays the working status of the power take-off motor.

[0097] In an exemplary embodiment, the method also includes: when the power take-off motor controller detects that the power take-off motor is in an abnormal state, the power take-off motor controller controls the power take-off motor to stop running, and feeds back the abnormal state to the vehicle controller and the instrument through the power take-off controller; the vehicle controller exits the power take-off function enabling state according to the abnormal state; and the instrument displays the abnormal state.

[0098] In an exemplary embodiment, the method also includes: after the power take-off switch is turned off, the power take-off controller stops sending power take-off function requests to the vehicle controller; the vehicle controller exits the power take-off function enable state and sends a function stop enable command to the power take-off controller; the power take-off controller forwards the function stop enable command to the power take-off motor controller; and the power take-off motor controller controls the power take-off motor to stop running according to the function stop enable command.

[0099] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0100] In an exemplary embodiment, the present application also provides a vehicle, wherein the vehicle is equipped with a power take-off function control system as described in any embodiment of the present application.

[0101] In one implementation, referring to FIG. 5 , FIG. 5 is a schematic diagram of the structure of a vehicle in one embodiment, and the vehicle includes a tractor 502 and a trailer 504. By configuring a power take-off function control system as described in any embodiment of the present application on the tractor 502, during the process of enabling the power take-off function, the trailer is controlled by the power take-off motor to perform a lifting operation or a lowering operation. Optionally, the driver can control the speed of the power take-off motor by controlling the accelerator pedal opening of the tractor 502, thereby controlling the amplitude or speed of the lifting operation or the lowering operation performed by the trailer. Optionally, the driver can control the trailer to suspend operation or continue operation by controlling the brake pedal of the tractor 502.

[0102] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0103] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0104] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0105] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A power take-off function control system, characterized in that: The system includes a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller and a power take-off motor; wherein: The power take-off controller is used to send a power take-off function request to the vehicle controller after the power take-off switch is activated; The vehicle controller is used to detect the vehicle state in response to the power take-off function request, and send a function enable command to the power take-off controller when the vehicle state meets the power take-off function enable condition; The power take-off controller is further used to forward the function enable command to the power take-off motor controller; The power take-off motor controller is used to control the operation of the power take-off motor according to the function enable command; The power take-off motor is used to control the working device to perform a lifting operation or a lowering operation.

2. The system according to claim 1, characterized in that The power take-off controller is further used to determine a target speed according to a current accelerator pedal opening, and send the target speed to the power take-off motor controller; The power take-off motor controller is also used to control the power take-off motor to reach the target speed.

3. The system according to claim 1, characterized in that The vehicle controller is also used to send a function enable command to the power take-off controller when the vehicle high voltage is powered on, the power take-off relay is closed, the power take-off motor is normal, the vehicle is stationary, the current gear is neutral, no charging connection signal is detected, the parking function is activated, and the remaining power is greater than the set value.

4. The system according to claim 1, characterized in that The power take-off controller is further used to send a brake signal to the power take-off motor controller when it is detected that the brake pedal is in a depressed state; The power take-off motor controller is further used to control the power take-off motor to suspend operation according to the braking signal.

5. The system according to claim 4, characterized in that The power take-off controller is further used to send a non-braking signal to the power take-off motor controller when detecting that the brake pedal is in a released state; The power take-off motor controller is further used to control the power take-off motor to continue running according to the non-braking signal.

6. The system according to claim 1, characterized in that The system also includes an instrument; The power take-off motor controller is further used to detect the working state of the power take-off motor and send the working state of the power take-off motor to the power take-off controller; The power take-off controller is also used to forward the working status of the power take-off motor to the vehicle controller and the instrument; The instrument is used to display the working status of the power take-off motor.

7. The system according to claim 6, characterized in that The power take-off motor controller is further used to control the power take-off motor to stop running when it is detected that the power take-off motor is in an abnormal state, and to feedback the abnormal state to the vehicle controller and the instrument through the power take-off controller; The vehicle controller is further configured to exit the power take-off function enabling state according to the abnormal state; The instrument is also used to display the abnormal state.

8. The system according to any one of claims 1 to 6, characterized in that: The power take-off controller is further used to stop sending a power take-off function request to the vehicle controller after the power take-off switch is turned off; The vehicle controller is further used to exit the power take-off function enable state and send a function stop enable command to the power take-off controller; The power take-off controller is further used to forward the function stop enabling command to the power take-off motor controller; The power take-off motor controller is further used to control the power take-off motor to stop running according to the function stop enable command.

9. A method for controlling a power take-off function, characterized in that: The method is applied to the power take-off function control system according to any one of claims 1 to 8, wherein the system comprises a power take-off switch, a power take-off controller, a vehicle controller, a power take-off motor controller and a power take-off motor; the method comprises: The power take-off controller sends a power take-off function request to the vehicle controller after the power take-off switch is activated; The vehicle controller detects the vehicle state in response to the power take-off function request, and sends a function enable command to the power take-off controller when the vehicle state meets the power take-off function enable condition; The power take-off controller forwards the function enable command to the power take-off motor controller; The power take-off motor controller controls the operation of the power take-off motor according to the function enable command; The power take-off motor controls the working device to perform a lifting operation or a lowering operation.

10. A vehicle, characterized in that: The vehicle is equipped with a power take-off function control system as claimed in any one of claims 1 to 8.

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