Clutch control method and device and vehicle

Abstract

The invention provides a clutch control method and device and a vehicle and is applied to the technical field of vehicle control, and the control method comprises the steps that the current working condition and the total demand torque of the vehicle are obtained, and the maximum output torque of a motor of the vehicle is calculated according to the current working condition of the vehicle; and according to the total demand torque of the vehicle and the maximum output torque of the motor, a clutch is controlled to be disengaged or closed so as to control the motor and / or an engine to provide power for the vehicle. According to the current working condition of the vehicle, the maximum output torque of the motor of the vehicle is calculated, opening and closing of the clutch are controlled according to the total demand torque of the vehicle and the maximum output torque of the motor, the opening and closing times of the clutch are reduced, the reliability of the clutch is improved, and the service life of the clutch is prolonged.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a clutch control method, device, and vehicle. Background Art

[0002] In hybrid commercial vehicles, the clutch is usually used to connect or disconnect the power transmission of the engine. When the vehicle is in hybrid mode, the clutch is closed, the engine is started, and the engine and the motor jointly provide power to drive the vehicle. When the vehicle is in pure electric mode, the clutch is disconnected and the engine is turned off so that the motor can provide power to drive the vehicle. The clutch determines whether the engine can normally output torque to the wheel end. It is a very critical component. The number of times the clutch opens and closes determines its life. Therefore, the opening and closing control of the clutch is crucial to the overall operation of the vehicle.

[0003] The existing clutch control method usually disconnects the clutch in time when it detects that the electromagnetic clutch cannot be engaged normally to prevent clutch damage and effectively increase the service life of the hybrid vehicle clutch. However, this method only activates a strategy to protect the clutch when a fault occurs and cannot reduce the number of clutch opening and closing times during driving. Summary of the invention

[0004] In view of this, the present application is dedicated to providing a clutch control method, device, and vehicle. The present application calculates the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle, controls the opening and closing of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, and effectively solves the problem that the existing clutch control method does not implement a specific protection strategy for the clutch during driving.

[0005] The present application calculates the maximum output torque of the vehicle's motor according to the vehicle's current operating conditions, and controls the opening and closing of the clutch according to the vehicle's total required torque and the maximum output torque of the motor, which can reduce the number of times the clutch is opened and closed and improve the reliability and service life of the clutch.

[0006] In a first aspect, an embodiment of the present application provides a clutch control method, comprising:

[0007] Obtain the vehicle's current operating conditions and total required torque;

[0008] Calculating the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle;

[0009] The clutch is controlled to be disengaged or engaged according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power for the vehicle.

[0010] Optionally, the calculating the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle includes:

[0011] Calculating the initial maximum output torque of the motor according to the current state of charge value of the battery and the rated power of the motor;

[0012] According to the current working condition of the vehicle, select the corresponding torque correction table;

[0013] According to the current state of charge value of the battery and the current speed of the vehicle, searching the torque correction table for a correction coefficient that matches the current state of charge value and the current speed of the vehicle;

[0014] The initial maximum output torque is corrected according to the correction coefficient to obtain the maximum output torque of the motor of the vehicle.

[0015] Optionally, controlling the disengagement or closure of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor includes:

[0016] When the total required torque of the vehicle is greater than the maximum output torque of the motor, the clutch is controlled to close.

[0017] Optionally, controlling the disengagement or closure of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor includes:

[0018] When the total required torque of the vehicle is less than or equal to the maximum output torque of the motor, the clutch is controlled to be disengaged or closed according to the rotation speed of the motor.

[0019] Optionally, controlling the disengagement or engagement of the clutch according to the rotation speed of the motor includes:

[0020] When the rotation speed of the motor is continuously greater than a first preset rotation speed and the total required torque of the vehicle is less than or equal to the maximum output torque of the motor for a duration greater than a first preset duration, the clutch is controlled to disengage.

[0021] Optionally, controlling the disengagement or engagement of the clutch according to the rotation speed of the motor includes:

[0022] When the speed of the motor is continuously less than or equal to the first preset speed and greater than the second preset speed, and the total required torque of the vehicle is less than or equal to the maximum output torque of the motor for a duration greater than the second preset duration, the clutch is controlled to disengage.

[0023] Optionally, the second preset duration is shorter than the first preset duration.

[0024] Optionally, controlling the disengagement or engagement of the clutch according to the rotation speed of the motor further includes:

[0025] When the rotation speed of the motor is less than or equal to the second preset rotation speed, the clutch is controlled to be disengaged.

[0026] In a second aspect, an embodiment of the present application provides a clutch control device, comprising:

[0027] A data acquisition module, the data acquisition module is used to obtain the current working condition of the vehicle and the total required torque;

[0028] A data processing module, the data processing module is used to calculate the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle;

[0029] A control module is used to control the disengagement or closure of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power for the vehicle.

[0030] In a third aspect, an embodiment of the present application provides a vehicle, including:

[0031] A clutch and a clutch control device according to the second aspect.

[0032] Based on the above content, the present application provides a clutch control method, which obtains the current working condition and total required torque of the vehicle, calculates the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle, and controls the disengagement or closing of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power for the vehicle. The present application calculates the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle, controls the opening and closing of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, which can reduce the number of opening and closing of the clutch and improve the reliability and service life of the clutch. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic flow chart of a clutch control method provided in an embodiment of the present application;

[0035] Figure 2 A schematic flow chart of another clutch control method provided in an embodiment of the present application;

[0036] Figure 3 A schematic flow chart of another clutch control method provided in an embodiment of the present application;

[0037] Figure 4 A schematic flow chart of another clutch control method provided in an embodiment of the present application;

[0038] Figure 5 A schematic flow chart of another clutch control method provided in an embodiment of the present application;

[0039] Figure 6 A schematic flow chart of another clutch control method provided in an embodiment of the present application;

[0040] Figure 7 A schematic flow chart of another clutch control method provided in an embodiment of the present application;

[0041] Figure 8 A schematic structural diagram of a clutch control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0043] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0044] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0045] Application Overview

[0046] In hybrid commercial vehicles, the motor can provide power to drive the vehicle, or the engine and the motor can provide power together. The starting or stopping of the engine depends on the opening and closing of the clutch between the engine and the motor. In order to adapt to different situations, the clutch needs to be opened and closed frequently, and the life of the clutch is related to the number of times it is opened and closed. Therefore, the opening and closing control of the clutch is crucial to the overall operation of the vehicle.

[0047] In the prior art, when it is detected that the electromagnetic clutch cannot be engaged normally, the clutch is disconnected in time to prevent damage to the clutch and effectively increase the service life of the hybrid vehicle clutch. However, this method only activates a strategy to protect the clutch when a fault occurs, and cannot reduce the number of clutch opening and closing times during the driving process of the entire vehicle.

[0048] In order to solve the above technical problems, the present application provides a clutch control method, device, and vehicle, which obtains the current working condition and total required torque of the vehicle, calculates the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle, and controls the disengagement or closing of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or engine to provide power for the vehicle. Compared with the prior art, the protection strategy for the clutch during driving is added, which can reduce the number of clutch opening and closing times and improve the reliability and service life of the clutch.

[0049] The clutch control method provided in the embodiments of this specification will be exemplarily described below with reference to the accompanying drawings.

[0050] Exemplary Methods

[0051] In hybrid vehicles, the clutch is located between the engine and the gearbox and is an important part of the vehicle's transmission system. It is closely connected to the flywheel assembly of the engine crankshaft and plays the role of cutting off and transmitting the engine power to the transmission system. In situations such as vehicle starting, shifting, and emergency braking, the clutch plays a vital role in ensuring smooth vehicle operation, reducing shock, and protecting the transmission system from overload damage.

[0052] like Figure 1 As shown, in this exemplary embodiment, a clutch control method is provided, which may include the following steps:

[0053] S100: Obtain the current working condition and total required torque of the vehicle.

[0054] The working condition of the vehicle is related to the road scenario in which the vehicle is traveling, the vehicle's load condition and mileage. The road scenarios when the vehicle is running may include highway gravel scenarios, mining scenarios, and urban construction waste scenarios. The vehicle's load condition may include empty vehicle and fully loaded vehicle. The vehicle's mileage includes long mileage and short mileage. The vehicle's current working condition may include basic scenario conditions (or invalid conditions), mining scenarios-full above and empty below conditions, mining scenarios-full below and empty above conditions, mining scenarios-undulating road conditions, highway gravel scenarios-undulating road conditions, highway gravel scenarios-full above and empty below conditions in mountainous areas, highway gravel scenarios-full below and empty above conditions, urban construction waste scenarios-long mileage empty and full load conditions, urban construction waste scenarios-short mileage empty and full load conditions, urban construction waste scenarios-undulating road conditions. The road scene on which the vehicle is traveling can be obtained in a variety of ways. For example, the controller can obtain the image data in the camera device. Specifically, the camera device can take pictures of the environment around the vehicle to obtain pictures around the vehicle, and then the working condition of the vehicle can be obtained based on the pictures. The camera device can be any device with camera and communication functions, such as a camera, a smart device with a camera, etc. The road scene on which the vehicle is traveling can also be obtained through the altitude and average speed obtained by the controller. Regarding the vehicle's load condition, the controller can obtain it directly from the vehicle's load sensor or the corresponding management system, or it can be judged by obtaining the moment when the vehicle's power take-off switch is triggered. The controller can obtain the vehicle's mileage from the current map or navigation, and the controller can obtain the vehicle's current total required torque through the torque sensor. In addition, the controller can also obtain the vehicle's current working condition through preset information.

[0055] S200: Calculate the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle.

[0056] The maximum output torque of the motor is related to the current working condition of the vehicle. The maximum output torque of the motor is different for different working conditions. After obtaining the current working condition of the vehicle, the maximum output torque of the motor of the vehicle is calculated according to the current working condition of the vehicle.

[0057] S300: Control the clutch to be disengaged or engaged according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power to the vehicle.

[0058] Based on the relationship between the total required torque of the vehicle and the maximum output torque of the motor, it is determined whether the motor can provide power for the vehicle alone to control the disengagement or closure of the clutch.

[0059] Specifically, the clutch may be a CO clutch, an electromagnetic clutch, or other clutches used to control the start or shutdown of the engine. When the clutch is closed, the engine is controlled to start, and the motor and the engine jointly provide power output for the vehicle; when the clutch is disengaged, the engine is controlled to shut down, and the motor provides power output for the vehicle.

[0060] In some embodiments of the present application, the current working condition and total required torque of the vehicle are obtained, and the maximum output torque of the motor of the vehicle is calculated according to the current working condition of the vehicle. The clutch is controlled to be disengaged or closed according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power to the vehicle. By adding a protection strategy for the clutch during driving, the number of times the clutch is opened and closed can be reduced, and the reliability and service life of the clutch can be improved.

[0061] In some embodiments of the present application, Figure 2 As shown, in S200, according to the current working condition of the vehicle, the specific steps of calculating the maximum output torque of the motor of the vehicle may include:

[0062] S201: Calculate the initial maximum output torque of the motor according to the current state of charge of the battery and the rated power of the motor.

[0063] There are many ways to obtain the current state of charge of the battery. For example, the current state of charge of the battery can be obtained through the intelligent vehicle system in the vehicle, or through the official APP, mini-programs and other third-party platforms corresponding to the vehicle. The rated power of the motor is a technical parameter provided by the manufacturer. The rated power of the motor is usually clearly marked on the motor nameplate or the motor specification. Therefore, the rated power of the motor can be obtained from the motor nameplate or the motor specification. The initial maximum output torque of the motor is proportional to the current state of charge of the battery. The initial maximum output torque of the motor is calculated based on the current state of charge of the battery and the rated power of the motor.

[0064] S202: Select a corresponding torque correction table according to the current working condition of the vehicle.

[0065] There is a corresponding relationship between the vehicle's operating condition and the torque correction table. Different vehicle operating conditions correspond to different torque correction tables. The vehicle's current operating condition is obtained. When the vehicle's current operating condition is determined, the corresponding torque correction table is also determined. When the vehicle's current operating condition changes, the corresponding torque correction table also changes accordingly.

[0066] S203: According to the current state of charge value of the battery and the current speed of the vehicle, a correction coefficient matching the current state of charge value and the current speed of the vehicle is searched in a torque correction table.

[0067] The vehicle speed can be obtained by receiving data information from the speed sensor. The speed sensor is usually installed on the drive wheel or the transmission shaft. After obtaining the current state of charge value of the battery and the current speed of the vehicle, the torque correction coefficient is found in the torque correction table. As shown in Table 1, when the vehicle is currently in the mining scene-full upper and lower working conditions, in the torque correction table, the torque correction coefficient is determined by the current state of charge value of the battery and the current speed of the vehicle. When the current state of charge value of the battery changes, or the current speed of the vehicle changes, or the current state of charge value and the current speed of the vehicle change at the same time, the correction coefficient matching the current state of charge value and the current speed of the vehicle will also change accordingly.

[0068] Table 1

[0069]

[0070] When the current state of charge value is high and the vehicle speed is high, or the state of charge value is low and the vehicle speed is low, the corresponding correction coefficient is small, reducing the pure electric capacity. The pure electric capacity is the maximum output torque of the motor, making the clutch easier to close and less likely to disengage, thereby reducing the number of times the clutch is disengaged or closed.

[0071] When the current state of charge value is high and the vehicle speed is low, the corresponding correction coefficient is larger, which improves the pure electric capability, makes the clutch easier to disengage and difficult to close, thereby reducing the number of times the clutch is disengaged or closed.

[0072] When the current state of charge value is low and the vehicle speed is high, the torque is not corrected.

[0073] S204: Correcting the initial maximum output torque according to the correction coefficient to obtain the maximum output torque of the motor of the vehicle.

[0074] After the correction coefficient is determined, the initial maximum output torque is corrected according to the correction coefficient. The corrected maximum output torque is the product of the correction coefficient and the initial maximum output torque. The corrected maximum output torque is the maximum output torque of the motor of the vehicle.

[0075] The clutch disengagement and closing control is related to the maximum output torque of the vehicle's motor, and the maximum output torque of the motor is related to the operating conditions of the vehicle. By controlling the number of clutch disengagements or closings under different operating conditions, the situation in which the number of clutch disengagements or closings increases due to changes in operating conditions can be avoided.

[0076] In some embodiments of the present application, Figure 3 As shown, the specific steps of controlling the clutch to be disengaged or engaged according to the total required torque of the vehicle and the maximum output torque of the motor in S300 may include:

[0077] S301: When the total required torque of the vehicle is greater than the maximum output torque of the motor, the clutch is controlled to close.

[0078] When the total required torque of the vehicle is greater than the maximum output torque of the motor, at this time, the motor alone cannot meet the power demand of the vehicle if it provides power output for the vehicle. In order to meet the power demand of the vehicle, it is necessary to control the clutch to close to start the engine so that the motor and the engine can jointly provide power output for the vehicle.

[0079] In some embodiments of the present application, Figure 4 As shown, the specific steps of controlling the clutch to be disengaged or closed according to the total required torque of the vehicle and the maximum output torque of the motor in S300 may also include:

[0080] S302: When the total required torque of the vehicle is less than or equal to the maximum output torque of the motor, the clutch is controlled to be disengaged or closed according to the rotation speed of the motor.

[0081] When the total required torque of the vehicle is less than or equal to the maximum output torque of the motor, the motor can meet the power demand of the vehicle if it provides power output for the vehicle alone. However, if the speed of the motor changes rapidly, the accelerator pedal opening changes sharply during the corresponding gear shifting process, which will still cause the clutch to be frequently disengaged or closed. Therefore, the present application adopts a method of dividing the speed of the motor into medium, high and low gears, and controls the disengagement or closure of the clutch according to the speed gear of the motor, so as to avoid the situation where the speed of the motor changes too quickly, resulting in an increase in the number of disengagements or closures of the clutch.

[0082] In some embodiments of the present application, Figure 5 As shown, in S302, the specific steps of controlling the clutch to be disengaged or closed according to the speed of the motor may include:

[0083] S3021: When the rotation speed of the motor is greater than a first preset rotation speed and the duration during which the total required torque of the vehicle is less than or equal to the maximum output torque of the motor is greater than a first preset duration, the clutch is controlled to disengage.

[0084] The total required torque of the vehicle is directly related to the accelerator pedal, which is unpredictable. Therefore, if the accelerator pedal changes quickly, the clutch will open and close more often. The delay strategy can reduce the number of openings and closings, but the delay strategy will cause the engine to drag backwards during recovery, affecting energy recovery and fuel saving rate. In order to neutralize the number of clutch openings and closings, energy recovery and fuel saving rate, this application uses different delay times corresponding to different speed states.

[0085] A first preset speed is preset, and a motor speed greater than the first preset speed corresponds to a high speed state of the motor, for example, the first preset speed is set to 1600 rpm. A first preset time is preset, for example, the first preset time is set to 5 seconds.

[0086] When the total required torque of the vehicle is less than or equal to the maximum output torque of the motor, the current speed state of the motor is judged, and the duration that the total required torque of the vehicle is less than or equal to the maximum output torque of the motor is timed. When the current speed of the motor is greater than a first preset speed and the total required torque of the vehicle is less than or equal to the maximum output torque of the motor for a duration greater than the first preset duration, the controller controls the clutch to disengage.

[0087] In some embodiments, when the total torque demand of the vehicle is less than or equal to the maximum output torque of the motor, the speed of the motor is greater than a first preset speed, and the duration for which the total torque demand of the vehicle is less than or equal to the maximum output torque of the motor is less than a first preset duration, the clutch is kept closed.

[0088] When the motor speed is greater than the first preset speed, if the duration of the total required torque of the vehicle being less than or equal to the maximum output torque of the motor is less than the first preset duration, the total required torque of the vehicle returns to the state where it is greater than the maximum output torque of the motor. The controller will assume that the driver has only temporarily released the accelerator and will not disengage the clutch at this time, but will keep it in the closed state. This will prevent the clutch from disengaging and closing due to sudden changes in the accelerator at high speeds, reduce the number of clutch opening and closing times, and improve clutch reliability.

[0089] In some embodiments of the present application, Figure 6 As shown, in S302, the specific steps of controlling the clutch to be disengaged or closed according to the speed of the motor may also include:

[0090] S3022: When the speed of the motor is less than or equal to the first preset speed and greater than the second preset speed, and the duration during which the total required torque of the vehicle is less than or equal to the maximum output torque of the motor is greater than the second preset duration, the clutch is controlled to disengage.

[0091] A second preset speed is preset. When the motor speed is less than or equal to the first preset speed and greater than the second preset speed, the motor corresponds to the medium speed state. For example, the second preset speed is set to 700 rpm. A second preset duration is preset. The second preset duration is less than the first preset duration. For example, the second preset duration is set to 3 seconds. The delay duration is different at different speeds in order to try to avoid the impact of reduced recovery energy due to a long delay time.

[0092] When the total required torque of the vehicle is less than or equal to the maximum output torque of the motor, the current speed state of the motor is judged, and the duration that the total required torque of the vehicle is less than or equal to the maximum output torque of the motor is timed; when the speed of the motor is less than or equal to the first preset speed and greater than the second preset speed, and the total required torque of the vehicle is less than or equal to the maximum output torque of the motor for a duration greater than the second preset duration, the clutch is controlled to disengage.

[0093] In some embodiments, when the total demand torque of the vehicle is less than or equal to the maximum output torque of the motor, the speed of the motor is less than or equal to the first preset speed and greater than the second preset speed, and the duration during which the total demand torque of the vehicle is less than or equal to the maximum output torque of the motor is less than the second preset duration, the clutch is kept closed.

[0094] When the motor speed is less than or equal to the first preset speed and greater than the second preset speed, if the duration of the total required torque of the vehicle being less than or equal to the maximum output torque of the motor is less than the second preset duration, the total required torque of the vehicle returns to the state where it is greater than the maximum output torque of the motor. The controller will assume that the driver has only temporarily released the accelerator and will not disengage the clutch at this time, keeping it in the closed state. This prevents the clutch from disengaging and closing due to sudden changes in the accelerator at medium speed, reduces the number of clutch opening and closing times, and improves clutch reliability.

[0095] In some embodiments of the present application, Figure 7 As shown, in S302, the specific steps of controlling the clutch to be disengaged or closed according to the speed of the motor may also include:

[0096] S3023: When the rotation speed of the motor is less than or equal to the second preset rotation speed, the clutch is controlled to disengage.

[0097] The motor speed is less than or equal to the second preset speed, which corresponds to the low speed state of the motor. When the motor speed is less than or equal to the second preset speed, the engine is generally in an idle state. At this time, the clutch is immediately controlled to disengage. The reason for not using the delay strategy at low speed is to protect the engine from being held back by the wheel end.

[0098] Exemplary Control Devices

[0099] In some embodiments of the present application, Figure 8 As shown, a clutch control device is provided, comprising: a data acquisition module 801, a data processing module 802 and a control module 803, wherein:

[0100] The data acquisition module 801 is used to obtain the current working condition and total required torque of the vehicle.

[0101] The data processing module 802 is used to calculate the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle.

[0102] The control module 803 is used to control the disengagement or closure of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power for the vehicle.

[0103] Specifically, the data acquisition module 801 is communicatively connected with various sensors of the vehicle. The data acquisition module obtains data information of each sensor by extraction, such as the current working condition of the vehicle and the total required torque. The various sensors of the vehicle may include a camera device, a load sensor, a vehicle speed sensor, etc. The data acquisition module may also directly obtain preset information of the vehicle, such as a map, a fixed destination, etc.

[0104] In order to obtain the maximum output torque of the vehicle's motor, the data processing module 802 is communicated with the data acquisition module 801, and the data processing module 802 obtains the current working condition of the vehicle obtained by the data acquisition module 801, and calculates the maximum output torque of the vehicle's motor according to the current working condition of the vehicle. The specific process includes: calculating the initial maximum output torque of the motor according to the current state of charge of the battery and the rated power of the motor, selecting the corresponding torque correction table according to the correspondence between the vehicle working condition and the torque correction table, and the current working condition of the vehicle, querying the correction coefficient matching the current state of charge value and the current speed of the vehicle in the torque correction table according to the current state of charge of the battery and the current speed of the vehicle, and correcting the initial maximum output torque according to the correction coefficient to obtain the maximum output torque of the vehicle's motor.

[0105] The control module 803 is in communication with the data processing module 802, obtains the maximum output torque of the motor calculated by the data processing module 802, controls the disengagement or closure of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or engine to provide power for the vehicle.

[0106] In addition, the clutch control device provided in this embodiment belongs to the same application concept as the clutch control method provided in the above embodiments of this application, and can execute the clutch control method provided in any of the above embodiments of this application, and has the corresponding functional units and beneficial effects of executing the clutch control method. For technical details not fully described in this embodiment, please refer to the specific processing content of the clutch control method provided in the above embodiments of this application, and will not be repeated here.

[0107] Example engineering vehicle

[0108] In some embodiments of the present application, a vehicle is provided, comprising: a clutch and the clutch control device described above.

[0109] In this application, the vehicle is a hybrid commercial vehicle, specifically, any type of 7-seater hybrid commercial vehicle, hybrid heavy truck, electric commercial vehicle (including electric truck, electric bus, electric passenger car, etc.) and hydrogen fuel commercial vehicle, etc. This application does not specify a certain model, and all vehicles within the scope of the technical concept of this application belong to the protection scope of the embodiments of this application.

[0110] Exemplary Electronic Devices

[0111] In some embodiments of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above clutch control methods when executing the computer program.

[0112] Specifically, the electronic device may further include: a bus, a communication interface, an input device and an output device. The processor, the memory, the communication interface, the input device and the output device are interconnected through the bus. The bus may include a path to transmit information between various components of the computer system.

[0113] The processor may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.

[0114] The processor may include a main processor and may also include a baseband chip, a modem, etc.

[0115] The memory stores a computer program for executing the technical solution of the present application, and may also store an operating system and other key services. Specifically, the program may include a program code, and the program code includes computer operation instructions. More specifically, the memory may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0116] The computer program may be written in any combination of one or more programming languages ​​to write program code for performing the operations of the embodiments of the present specification, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0117] The input device may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0118] Output devices may include means that allow information to be output to a user, such as display screens, printers, speakers, etc.

[0119] The communication interface may include using any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0120] The processor executes the program stored in the memory and calls other devices, which can be used to implement each step of the clutch control method provided in the above-mentioned embodiment of the present application.

[0121] 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 specification.

[0122] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, etc. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module / unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. The present disclosure is not limited to any particular form of combination of hardware and software.

[0123] Unless otherwise defined, all terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0124] The above is an explanation of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure are described, it will be readily understood by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the above is an explanation of the present disclosure and should not be considered to be limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present disclosure is defined by the claims and their equivalents.

Claims

1. A clutch control method, characterized in that: include: Obtain the vehicle's current operating conditions and total required torque; Calculating the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle; The clutch is controlled to be disengaged or engaged according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power for the vehicle.

2. The clutch control method according to claim 1, characterized in that: The calculating, according to the current working condition of the vehicle, the maximum output torque of the motor of the vehicle comprises: Calculating the initial maximum output torque of the motor according to the current state of charge value of the battery and the rated power of the motor; According to the current working condition of the vehicle, select the corresponding torque correction table; According to the current state of charge value of the battery and the current speed of the vehicle, searching the torque correction table for a correction coefficient that matches the current state of charge value and the current speed of the vehicle; The initial maximum output torque is corrected according to the correction coefficient to obtain the maximum output torque of the motor of the vehicle.

3. The clutch control method according to claim 1, characterized in that: The step of controlling the clutch to be disengaged or engaged according to the total required torque of the vehicle and the maximum output torque of the motor comprises: When the total required torque of the vehicle is greater than the maximum output torque of the motor, the clutch is controlled to close.

4. The clutch control method according to claim 1, characterized in that: The step of controlling the clutch to be disengaged or engaged according to the total required torque of the vehicle and the maximum output torque of the motor comprises: When the total required torque of the vehicle is less than or equal to the maximum output torque of the motor, the clutch is controlled to be disengaged or closed according to the rotation speed of the motor.

5. The clutch control method according to claim 4, characterized in that: The control of the clutch disengagement or engagement according to the rotation speed of the motor includes: When the rotation speed of the motor is continuously greater than a first preset rotation speed and the total required torque of the vehicle is less than or equal to the maximum output torque of the motor for a duration greater than a first preset duration, the clutch is controlled to disengage.

6. The clutch control method according to claim 5, characterized in that: The control of the clutch disengagement or engagement according to the rotation speed of the motor includes: When the speed of the motor is continuously less than or equal to the first preset speed and greater than the second preset speed, and the total required torque of the vehicle is less than or equal to the maximum output torque of the motor for a duration greater than the second preset duration, the clutch is controlled to disengage.

7. The clutch control method according to claim 6, characterized in that: The second preset time length is shorter than the first preset time length.

8. The clutch control method according to claim 6, characterized in that: The method of controlling the clutch to be disengaged or closed according to the rotation speed of the motor further comprises: When the rotation speed of the motor is less than or equal to the second preset rotation speed, the clutch is controlled to be disengaged.

9. A clutch control device, characterized in that: include: A data acquisition module, the data acquisition module is used to obtain the current working condition of the vehicle and the total required torque; A data processing module, the data processing module is used to calculate the maximum output torque of the motor of the vehicle according to the current working condition of the vehicle; A control module is used to control the disengagement or closure of the clutch according to the total required torque of the vehicle and the maximum output torque of the motor, so as to control the motor and / or the engine to provide power for the vehicle.

10. A vehicle, characterized in that: include: A clutch and a clutch control device as claimed in claim 9.

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