Air compressor control method and related devices for new energy commercial vehicles

Abstract

The present application discloses a method for controlling an air compressor of a new energy commercial vehicle and a related device, wherein the method includes obtaining the air supply parameter value of the entire vehicle system during driving in real time; determining the braking parameter value of the vehicle when braking occurs during the driving process; and adopting a second preset control strategy to control the air compressor when judging that the air supply parameter value of the entire vehicle system at the current moment is less than a preset air supply threshold and the braking parameter value at the current moment is greater than a preset braking frequency threshold, wherein the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the first speed of the air compressor controlled by the first preset control strategy, and the first speed is the rated standard value. Through this application, the variable speed control of the air compressor of a new energy commercial vehicle is achieved, thereby reducing energy consumption and air supply time.

Description

Technical Field

[0001] The present application relates to the technical fields of intelligent driving and new energy commercial vehicles, and in particular to an air compressor control method and related devices for new energy commercial vehicles. Background Art

[0002] New energy commercial vehicles are equipped with air compressors as brake air sources. Under the premise that air compressors have become standard equipment for new energy commercial vehicles, how to control the air compressor to optimize the vehicle control strategy, reduce energy consumption, and improve driving safety is particularly important.

[0003] In related technologies, air compressors operate in a constant speed mode, resulting in a constant exhaust volume. Furthermore, the pumping time is fixed based on the total reservoir volume and steady-state pressure planned by the OEM, resulting in poor adjustability. If a vehicle experiences excessive braking air consumption on congested roads, the speed and displacement cannot be adjusted, exacerbating the drawback of slow air supply and increasing the vehicle's energy consumption and cooling capacity. Summary of the Invention

[0004] The embodiments of the present application provide an air compressor control method and related devices for new energy commercial vehicles to achieve optimized control of a variable speed air compressor, thereby addressing the problem of low air pressure or insufficient brake air source caused by frequent braking of vehicles on congested roads.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a method for controlling an air compressor of a new energy commercial vehicle, wherein the method includes:

[0007] Real-time acquisition of vehicle system air supply parameter values ​​during driving;

[0008] determining a braking parameter value of the vehicle when braking occurs during the driving process;

[0009] When it is judged that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, the second preset control strategy is adopted to control the air compressor, wherein the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the first speed of the air compressor obtained by controlling the first preset control strategy, and the first speed is the rated standard value.

[0010] In some embodiments, the method further includes: obtaining a vehicle weight information parameter value of the vehicle,

[0011] If the vehicle weight information parameter value is greater than the preset vehicle load value, it is considered that the current load state of the vehicle is fully loaded;

[0012] If the vehicle weight information parameter value is greater than the preset vehicle load value, it is considered that the current load state of the vehicle is unloaded.

[0013] In some embodiments, when it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is less than the preset braking frequency threshold value, the first preset control strategy is adopted to control the air compressor so that the speed of the air compressor reaches the rated standard value.

[0014] In some embodiments, the braking parameter value includes a braking frequency, which is determined based on the number of braking times and the braking interval. The determining whether the braking parameter value at the current moment is greater than a preset braking frequency threshold value includes:

[0015] According to the braking frequency and the corresponding pressure reduction gradient value during each braking, it is determined whether the braking parameter value at the current moment is greater than a preset braking frequency threshold;

[0016] In some embodiments, the real-time acquisition of the vehicle system air supply parameter value during driving includes:

[0017] Real-time acquisition of a front axle real-time air pressure value or a rear axle real-time air pressure value in a current state of the vehicle during driving;

[0018] Determining a braking parameter value of the vehicle when braking occurs during the driving process includes:

[0019] Obtaining a brake pedal travel of the vehicle;

[0020] Obtaining the operating status of the ABS module of the vehicle;

[0021] Record the duration of braking.

[0022] In some embodiments, when it is determined that the air supply parameter value of the vehicle system at the current moment is less than a preset air supply threshold and the braking parameter value at the current moment is greater than a preset braking frequency threshold, the second preset control strategy is used to control the air compressor, including:

[0023] If it is determined that the brake pedal stroke of the vehicle meets the preset conditions, and

[0024] The duration corresponding to the braking operation meets the preset duration, and

[0025] Determine whether the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle obtained in real time during the current state of the vehicle is greater than a preset pressure threshold value, and

[0026] If the braking interval meets the preset interval, a second preset control strategy is adopted to control the air compressor.

[0027] In some embodiments, further comprising:

[0028] Determine whether the pressure drop parameter value after multiple braking is greater than the preset threshold value,

[0029] If it is determined that the pressure drop parameter value after the multiple braking steps is greater than the preset threshold value, a second preset control strategy is adopted to control the air compressor.

[0030] In a second aspect, an embodiment of the present application further provides an air compressor control device for a new energy commercial vehicle, wherein the device comprises:

[0031] The acquisition module is used to obtain the air supply parameter values ​​of the entire vehicle system in real time during the vehicle's driving process;

[0032] a determination module, configured to determine a braking parameter value of the vehicle when braking occurs during the driving process;

[0033] A control module is configured to control the air compressor using a second preset control strategy when it is determined that the air supply parameter value of the vehicle system at a current moment is less than a preset air supply threshold value and the braking parameter value at a current moment is greater than a preset braking frequency threshold value, wherein a second speed of the air compressor obtained using the second preset control strategy is greater than a first speed of the air compressor obtained by controlling the air compressor using the first preset control strategy, and the first speed is a rated standard value.

[0034] In a third aspect, an embodiment of the present application further provides an electronic device, comprising: a processor; and a memory arranged to store computer-executable instructions, wherein the executable instructions, when executed, enable the processor to perform the above method.

[0035] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, which stores one or more programs. When the one or more programs are executed by an electronic device including multiple application programs, the electronic device executes the above method.

[0036] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0037] By acquiring the vehicle's system air supply parameters in real time while driving and determining the vehicle's braking parameters when braking, the system uses these values ​​as a basis for determining whether the air compressor provides high-speed air supply (for a short period of time) or standard-speed air supply. This solves the problem of low air pressure or insufficient brake air supply caused by frequent braking on congested roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0039] Figure 1 This is a flow chart of a method for controlling an air compressor of a new energy commercial vehicle according to an embodiment of the present application;

[0040] Figure 2 This is a schematic diagram of the overall flow of the air compressor control method for new energy commercial vehicles in an embodiment of the present application;

[0041] Figure 3 This is a schematic structural diagram of an air compressor control device for a new energy commercial vehicle in an embodiment of the present application;

[0042] Figure 4 This is a schematic diagram of a control strategy for an air compressor control method for a new energy commercial vehicle in an embodiment of the present application;

[0043] Figure 5 This is a structural diagram of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] In the related art, the electric air compressor is in constant speed mode with a fixed exhaust volume. Under the factory-planned rated total air tank volume and rated steady-state pressure conditions, the pumping time is a fixed value and cannot be adjusted.

[0046] During the research, the inventor found that the electric air compressor (air compressor) in the related technology is generally adapted to the motor, crankshaft, noise and other structural parts according to the displacement requirements of the whole vehicle. While meeting the displacement requirements of the whole vehicle, it also takes into account the cost, weight, motor power and noise requirements, matching the most cost-effective product and achieving the optimal rated speed and exhaust volume.

[0047] After actual bench testing, it was found that without upgrading the hardware, the motor could only maintain peak speed for a short period of time (for example, about 300 rpm higher than the rated speed). Long-term high-speed operation would cause motor erosion, crankshaft breakage, noise levels exceeding regulatory requirements, and reduce the service life of the air compressor, making it impossible to maintain high-speed operation for a long time.

[0048] If the electric air compressor is at a constant speed, when the vehicle frequently brakes on a congested road, it will lead to insufficient supply of brake air, further causing the braking force to decay, posing a driving safety hazard.

[0049] In addition, during frequent driving braking, if the air pressure of the electric air compressor is too low, causing the vehicle's low-pressure alarm, the driver needs to actively stop the car to pump air (pressurize) before continuing to drive, affecting the vehicle's operating efficiency.

[0050] In response to the above-mentioned defects, the air compressor control method for new energy commercial vehicles in the embodiment of the present application can shorten the pumping time when the air demand is high, while reducing energy consumption, thereby improving braking safety.

[0051] An air compressor, the core of an air source, converts the motor's mechanical energy into gas pressure energy and is a compressed air pressure generator. Air compressors serve as the brake air source for new energy commercial vehicles.

[0052] The following describes in detail the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0053] The embodiment of the present application provides an air compressor control method for a new energy commercial vehicle, such as Figure 1 As shown, a flow chart of a method for controlling an air compressor of a new energy commercial vehicle in an embodiment of the present application is provided. The method includes at least the following steps S110 to S130:

[0054] Step S110 , obtaining the air supply parameter values ​​of the entire vehicle system during the vehicle's driving in real time.

[0055] Based on the standard protocol of commercial vehicles, such as the J1939-71 standard, the required signal status can be obtained. The vehicle obtains the air supply reference value of the vehicle system in real time while driving.

[0056] For example, the real-time air pressure value of the front axle in the current state is identified according to the air supply pressure of AIR1 (ID: 18FEAEXX, PNG: 65198) and Service Brake Circuit 1 Air Pressure (SPN: 1087).

[0057] Alternatively, identify the current rear axle real-time air pressure value based on the air supply pressure of AIR1 (ID: 18FEAE17, PNG: 65198) and Service BrakeCircuit 2Air Pressure (SPN: 1088).

[0058] Of course, the real-time air pressure values ​​of the front and rear axles in the current state can be identified at the same time. At the same time, a preset air supply threshold value needs to be pre-set, which can be set according to actual conditions and is not specifically limited in the embodiments of this application.

[0059] Step S120: determining a braking parameter value of the vehicle when braking occurs during the driving process.

[0060] Similarly, the braking parameter values ​​of the vehicle when braking occurs during the driving process can be determined. The braking parameter values ​​here include but are not limited to the number of braking times during the driving process, the time interval between each braking, the pressure reduction gradient value, etc.

[0061] It should be noted that determining the braking parameter value of the vehicle when braking occurs during the driving process and obtaining the air supply parameter value of the vehicle system during the driving process are performed simultaneously and are for the same driving process.

[0062] Step S130, when it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, a second preset control strategy is adopted to control the air compressor, wherein the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the first speed of the air compressor obtained by controlling the air compressor in the first preset control strategy, and the first speed is the rated standard value.

[0063] From the perspective of reducing pneumatic energy consumption, when it is judged that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold and the braking parameter value at the current moment is greater than the preset braking frequency threshold, the second preset control strategy is adopted to control the air compressor.

[0064] Considering the scenario where the vehicle brakes frequently during driving, when it is determined that the vehicle system air supply parameter value at the current moment is less than the preset air supply threshold (exceeds the preset air supply threshold) and the braking parameter value at the current moment is greater than the preset braking frequency threshold (high-frequency braking), the second preset control strategy is adopted to control the air compressor, such as Figure 2 As shown, at this time, the vehicle controller controls the high-pressure auxiliary drive to output a high-speed request signal to the air compressor controller, so that the air compressor maintains a high-speed and high-displacement working state, and shortens the pumping time as much as possible under the condition of the same volume.

[0065] In some embodiments, the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the rated standard value of the first speed of the air compressor obtained by adopting the first preset control strategy. That is, when the second preset control strategy is used, the air compressor is controlled to provide high-speed air supply (within a preset short time), thereby achieving a high exhaust volume working state. Under the condition of the same volume, the pumping time can be shortened as much as possible.

[0066] In one embodiment of the present application, the method further includes: obtaining a vehicle weight information parameter value of the vehicle; if the vehicle weight information parameter value is greater than a preset vehicle load value, the vehicle's current load state is considered to be fully loaded; if the vehicle weight information parameter value is greater than the preset vehicle load value, the vehicle's current load state is considered to be unloaded.

[0067] During specific implementation, it is necessary to consider the vehicle weight, that is, whether the vehicle is fully loaded or not, which will also affect the control strategy of the air compressor.

[0068] For example, the vehicle load status is identified based on the Gross Combination Vehicle Weight (SPN: 1760) in the CVW (ID: 00FE700B, PNG: 65136) vehicle weight information.

[0069] After obtaining the vehicle weight information parameter value, if it is determined that the vehicle weight information parameter value is greater than a preset vehicle load value (e.g., 16T), the vehicle's current load state is considered to be fully loaded. Similarly, if the vehicle weight information parameter value is greater than the preset vehicle load value, the vehicle's current load state is considered to be unloaded.

[0070] When considering the control strategy, it is necessary to consider the vehicle load state and distinguish different situations so that the air compressor provides low-speed air supply or high-speed air supply.

[0071] In one embodiment of the present application, when it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is less than the preset braking frequency threshold value, the first preset control strategy is adopted to control the air compressor so that the speed of the air compressor reaches the rated standard value.

[0072] When implementing it specifically, Figure 2 As previously described, if the current vehicle system air supply parameter value is determined to be less than a preset air supply threshold and the current braking parameter value is less than a preset braking frequency threshold, a first preset control strategy is employed to control the air compressor so that the air compressor speed reaches a rated standard value. Specifically, the vehicle controller may control the high-voltage auxiliary drive to power the electric air compressor to supply air to the vehicle.

[0073] In one embodiment of the present application, the braking parameter value includes a braking frequency, which is determined based on the number of braking times and the braking interval. The judgment that the braking parameter value at the current moment is greater than the preset braking frequency threshold value includes: judging whether the braking parameter value at the current moment is greater than the preset braking frequency threshold value based on the braking frequency and the corresponding pressure reduction gradient value during each braking.

[0074] In practice, the vehicle controller monitors braking parameters, including braking frequency (number of brakes / braking interval) and the pressure drop gradient during each brake, to determine if the vehicle is experiencing high air consumption. The vehicle controller then controls the high-voltage auxiliary drive to output a high-speed request signal to the air compressor controller, maintaining the compressor's high speed and achieving a high-displacement operating state. This minimizes pumping time while maintaining the same volume.

[0075] In one embodiment of the present application, the real-time acquisition of the vehicle system air supply parameter value during driving includes: real-time acquisition of the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle in the current state of the vehicle during driving; determining the braking parameter value of the vehicle when braking occurs during the driving process, including: acquiring the brake pedal stroke of the vehicle; acquiring the working status of the ABS module of the vehicle; and recording the corresponding duration when braking is performed.

[0076] During specific implementation, the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle in the current state of the vehicle during driving is obtained in real time: according to the air supply pressure of AIR1 (ID: 18FEAEXX, PNG: 65198), Service BrakeCircuit 1Air Pressure (SPN: 1087), the real-time air pressure value of the front axle in the current state is identified.

[0077] Based on the air supply pressure of AIR1 (ID: 18FEAE17, PNG: 65198), Service Brake Circuit 2 Air Pressure (SPN: 1088), identify the real-time air pressure value of the rear axle in the current state.

[0078] Obtain the vehicle's brake pedal travel; obtain the vehicle's ABS module operating status; and record the duration of braking:

[0079] Identify the brake pedal stroke based on the Brake Pedal Position (SPN: 521) in the EBC1 (ID: 18F0010B, PNG: 61441) electronic brake controller.

[0080] According to Anti-lock Braking (ABS) Active (SPN: 563) in the EBC1 (ID: 18F0010B, PNG: 61441) electronic brake controller, the ABS operating status is identified.

[0081] The vehicle load status is identified based on the Gross Combination Vehicle Weight (SPN: 1760) in the CVW (ID: 00FE700B, PNG: 65136) vehicle weight information.

[0082] According to TD (ID: 18FEE6XX, PNG: (65254) time / date, Seconds (SPN: 959), the time information (unit: seconds) is recorded.

[0083] In one embodiment of the present application, when it is judged that the air supply parameter value of the whole vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, the second preset control strategy is adopted to control the air compressor, including: if it is judged that the brake pedal stroke of the vehicle meets the preset conditions, and the corresponding time length when the braking is executed meets the preset time length, and it is judged that the real-time front axle real-time air pressure value or the rear axle real-time air pressure value in the current state of the vehicle during driving is not greater than the preset pressure threshold value, and the braking interval meets the preset interval, then the second preset control strategy is adopted to control the air compressor.

[0084] When implementing it specifically, Figure 4 As shown, if it is determined that the vehicle's brake pedal travel meets preset conditions, the duration corresponding to the braking action meets a preset duration, and the real-time front axle air pressure value or the real-time rear axle air pressure value obtained in real time during the vehicle's current driving state is not greater than a preset pressure threshold value, and the braking interval meets a preset interval, that is, if all of the above conditions are met, the second preset control strategy is used to control the air compressor. At this time, the vehicle's current load state is fully loaded.

[0085] In one embodiment of the present application, the method further includes: determining whether the pressure drop parameter value after multiple braking is greater than a preset threshold value; if it is determined that the pressure drop parameter value after multiple braking is greater than the preset threshold value, then adopting a second preset control strategy to control the air compressor.

[0086] like Figure 4 As shown, in a specific implementation, when the current load state of the vehicle is no-load, at the same time,

[0087] If it is determined that the brake pedal stroke of the vehicle meets the preset conditions, and

[0088] The duration corresponding to the braking operation meets the preset duration, and

[0089] Determine whether the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle obtained in real time during the current state of the vehicle is greater than a preset pressure threshold value, and

[0090] If the braking interval meets the preset interval, a second preset control strategy is adopted to control the air compressor.

[0091] At this time, it is also necessary to consider whether the pressure drop parameter value after multiple braking (for example, whether the pressure drop is greater than 200kPa / 3 braking times) is greater than the preset threshold value; if it is judged that the pressure drop parameter value after multiple braking is greater than the preset threshold value, the second preset control strategy is adopted to control the air compressor to control the air compressor to provide high-speed air supply.

[0092] If the vehicle is currently fully loaded, there is no need to consider the above situation.

[0093] The embodiment of the present application also provides an air compressor control device 300 for a new energy commercial vehicle, such as Figure 3 As shown, a schematic structural diagram of an air compressor control device for a new energy commercial vehicle in an embodiment of the present application is provided. The air compressor control device 300 for a new energy commercial vehicle includes at least: an acquisition module 310, a determination module 320, and a control module 330, wherein:

[0094] In one embodiment of the present application, the acquisition module 310 is specifically used to obtain the air supply parameter value of the entire vehicle system in real time during the vehicle's driving process.

[0095] Based on the standard protocol of commercial vehicles, such as the J1939-71 standard, the required signal status can be obtained. The vehicle obtains the air supply reference value of the vehicle system in real time while driving.

[0096] For example, the real-time air pressure value of the front axle in the current state is identified according to the air supply pressure of AIR1 (ID: 18FEAEXX, PNG: 65198) and Service Brake Circuit 1 Air Pressure (SPN: 1087).

[0097] Alternatively, identify the current rear axle real-time air pressure value based on the air supply pressure of AIR1 (ID: 18FEAE17, PNG: 65198) and Service BrakeCircuit 2Air Pressure (SPN: 1088).

[0098] Of course, the real-time air pressure values ​​of the front and rear axles in the current state can be identified at the same time. At the same time, a preset air supply threshold value needs to be pre-set, which can be set according to actual conditions and is not specifically limited in the embodiments of this application.

[0099] In one embodiment of the present application, the determination module 320 is specifically used to determine a braking parameter value of the vehicle when braking occurs during the driving process.

[0100] Similarly, the braking parameter values ​​of the vehicle when braking occurs during the driving process can be determined. The braking parameter values ​​here include but are not limited to the number of braking times during the driving process, the time interval between each braking, the pressure reduction gradient value, etc.

[0101] It should be noted that determining the braking parameter value of the vehicle when braking occurs during the driving process and obtaining the air supply parameter value of the vehicle system during the driving process are performed simultaneously and are for the same driving process.

[0102] In one embodiment of the present application, the control module 330 is specifically used to: when it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, adopt a second preset control strategy to control the air compressor, wherein the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the first speed of the air compressor obtained by controlling the first preset control strategy, and the first speed is the rated standard value.

[0103] From the perspective of reducing pneumatic energy consumption, when it is judged that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold and the braking parameter value at the current moment is greater than the preset braking frequency threshold, the second preset control strategy is adopted to control the air compressor.

[0104] Considering the scenario where the vehicle brakes frequently during driving, when it is determined that the vehicle system air supply parameter value at the current moment is less than the preset air supply threshold (exceeds the preset air supply threshold) and the braking parameter value at the current moment is greater than the preset braking frequency threshold (high-frequency braking), the second preset control strategy is adopted to control the air compressor, such as Figure 2 As shown, at this time, the vehicle controller controls the high-pressure auxiliary drive to output a high-speed request signal to the air compressor controller, so that the air compressor maintains a high-speed and high-displacement working state, and shortens the pumping time as much as possible under the condition of the same volume.

[0105] In some embodiments, the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the rated standard value of the first speed of the air compressor obtained by adopting the first preset control strategy. That is, when the second preset control strategy is used, the air compressor is controlled to provide high-speed air supply (within a preset short time), thereby achieving a high exhaust volume working state. Under the condition of the same volume, the pumping time can be shortened as much as possible.

[0106] It can be understood that the air compressor control device of the above-mentioned new energy commercial vehicle can implement the various steps of the air compressor control method of the new energy commercial vehicle provided in the aforementioned embodiment. The relevant explanations on the air compressor control method of the new energy commercial vehicle are applicable to the air compressor control device of the new energy commercial vehicle and will not be repeated here.

[0107] like Figure 4 , which is a schematic diagram of the control strategy of the air compressor control method for a new energy commercial vehicle in an embodiment of the present application.

[0108] First, the vehicle weight information parameter value of the vehicle is obtained. If the vehicle weight information parameter value is greater than the preset vehicle load value, the vehicle's current load state is considered to be fully loaded; if the vehicle weight information parameter value is greater than the preset vehicle load value, the vehicle's current load state is considered to be unloaded.

[0109] Then, the real-time acquisition of the vehicle system air supply parameter value during the vehicle driving process includes:

[0110] Real-time acquisition of a front axle real-time air pressure value or a rear axle real-time air pressure value in a current state of the vehicle during driving;

[0111] Determining a braking parameter value of the vehicle when braking occurs during the driving process includes:

[0112] Obtaining a brake pedal travel of the vehicle;

[0113] Obtaining the operating status of the ABS module of the vehicle;

[0114] Record the duration of braking.

[0115] Finally, when it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold and the braking parameter value at the current moment is greater than the preset braking frequency threshold, the second preset control strategy is adopted to control the air compressor, including:

[0116] If it is determined that the brake pedal stroke of the vehicle meets the preset conditions, and

[0117] The duration corresponding to the braking operation meets the preset duration, and

[0118] Determine whether the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle obtained in real time during the current state of the vehicle is greater than a preset pressure threshold value, and

[0119] If the braking interval meets the preset interval, a second preset control strategy is adopted to control the air compressor.

[0120] The air compressor control method for new energy commercial vehicles in the embodiment of the present application can shorten the pumping time when the air demand is high, while reducing energy consumption, thereby improving braking safety.

[0121] The specific principle is analyzed as follows: due to the variable speed control of the air compressor, the energy consumption is better.

[0122] Considering that discontinuous speed is controllable, it is only necessary to define the standard speed and the maximum speed that can be tolerated for a short period of time. The reasons are as follows:

[0123] After bench testing: under the same volume and the same voltage regulation state, the energy consumption at low speed is higher than that at high speed, so only the upper and lower limits need to be defined, and there is no need to pay attention to the speed continuity.

[0124] For identical air compressors, with the same total air reservoir volume and steady-state pressure, the energy consumption data corresponding to different speeds are shown in Table 1 below:

[0125] Table 1

[0126]

[0127] Bench test data shows that when the total volume of the air cylinder is the same and the steady-state pressure is the same, the higher the speed, the lower the energy consumption.

[0128] Due to the variable speed control of the air compressor, the secondary air supply time is shorter.

[0129] Specifically, if the air compressor's displacement at 1500rpm corresponds to 380L / min, and at 1800rpm the corresponding displacement can reach 430L / min, it will take less time to achieve the same air supply effect, and the secondary air supply can be completed more quickly in congested roads, thereby improving driving braking safety.

[0130] Figure 5 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present application. Figure 5At the hardware level, the electronic device includes a processor and, optionally, an internal bus, a network interface, and memory. The memory may include internal memory, such as high-speed random-access memory (RAM), or non-volatile memory, such as at least one disk drive. Of course, the electronic device may also include other hardware required for its services.

[0131] The processor, network interface, and memory can be interconnected via an internal bus, which can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0132] The memory is used to store programs. Specifically, the program may include program code, which includes computer operating instructions. The memory may include internal memory and non-volatile memory, and provides instructions and data to the processor.

[0133] The processor reads the corresponding computer program from the non-volatile memory into the internal memory and then runs it, forming the air compressor control device for new energy commercial vehicles at the logical level. The processor executes the program stored in the memory and is specifically used to perform the following operations:

[0134] Real-time acquisition of vehicle system air supply parameter values ​​during driving;

[0135] determining a braking parameter value of the vehicle when braking occurs during the driving process;

[0136] When it is judged that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, the second preset control strategy is adopted to control the air compressor, wherein the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the first speed of the air compressor obtained by controlling the first preset control strategy, and the first speed is the rated standard value.

[0137] The above application Figure 1The method performed by the air compressor control device for a new energy commercial vehicle disclosed in the illustrated embodiment can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits in the processor or by software instructions. The above processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in conjunction with the embodiments of this application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0138] The electronic device may also perform Figure 1 The method for executing the air compressor control device of the new energy commercial vehicle is realized in Figure 1 The functions of the illustrated embodiment will not be described in detail in the embodiments of the present application.

[0139] The embodiment of the present application also provides a computer-readable storage medium, which stores one or more programs, wherein the one or more programs include instructions, which, when executed by an electronic device including multiple application programs, can enable the electronic device to execute Figure 1 The method executed by the air compressor control device of the new energy commercial vehicle in the embodiment shown is specifically used to perform:

[0140] Real-time acquisition of vehicle system air supply parameter values ​​during driving;

[0141] determining a braking parameter value of the vehicle when braking occurs during the driving process;

[0142] When it is judged that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, the second preset control strategy is adopted to control the air compressor, wherein the second speed of the air compressor obtained by adopting the second preset control strategy is greater than the first speed of the air compressor obtained by controlling the first preset control strategy, and the first speed is the rated standard value.

[0143] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0144] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0145] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0146] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0147] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0148] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0149] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0150] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0151] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0152] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A method for controlling an air compressor of a new energy commercial vehicle, wherein: The method comprises: Real-time acquisition of vehicle system air supply parameter values ​​during driving; The real-time acquisition of the vehicle system air supply parameter value during the vehicle's driving process includes: Real-time acquisition of a front axle real-time air pressure value or a rear axle real-time air pressure value in a current state of the vehicle during driving; Determining a braking parameter value of the vehicle when braking occurs during the driving process includes: Obtaining a brake pedal travel of the vehicle; Obtaining the operating status of the ABS module of the vehicle; Record the duration of braking; determining a braking parameter value of the vehicle when braking occurs during the driving process; When it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is greater than the preset braking frequency threshold value, the air compressor is controlled using a second preset control strategy, wherein a second speed of the air compressor obtained by using the second preset control strategy is greater than a first speed of the air compressor obtained by using the first preset control strategy, and the first speed is a rated standard value; Obtaining a vehicle weight information parameter value of the vehicle, and if the vehicle weight information parameter value is greater than a preset vehicle load value, it is considered that the current load state of the vehicle is fully loaded; If the vehicle weight information parameter value is less than the preset vehicle load value, it is considered that the current load state of the vehicle is unloaded; When it is determined that the air supply parameter value of the entire vehicle system at the current moment is less than the preset air supply threshold and the braking parameter value at the current moment is greater than the preset braking frequency threshold, the second preset control strategy is adopted to control the air compressor, including: If it is determined that the brake pedal stroke of the vehicle meets the preset conditions, and The duration corresponding to the braking operation meets the preset duration, and Determine whether the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle obtained in real time during the current state of the vehicle is greater than a preset pressure threshold value, and If the braking interval satisfies the preset interval, a second preset control strategy is adopted to control the air compressor; Determine whether the pressure drop parameter value after multiple braking is greater than a preset threshold; If it is determined that the pressure drop parameter value after the multiple braking steps is greater than the preset threshold value, a second preset control strategy is adopted to control the air compressor.

2. The method according to claim 1, wherein: When it is determined that the air supply parameter value of the vehicle system at the current moment is less than the preset air supply threshold value and the braking parameter value at the current moment is less than the preset braking frequency threshold value, the first preset control strategy is adopted to control the air compressor so that the speed of the air compressor reaches the rated standard value.

3. The method according to claim 1, wherein: The braking parameter value includes a braking frequency, which is determined based on the number of braking times and the braking interval. The determining whether the braking parameter value at the current moment is greater than a preset braking frequency threshold value includes: According to the braking frequency and the corresponding pressure reduction gradient value during each braking, it is determined whether the braking parameter value at the current moment is greater than a preset braking frequency threshold.

4. An air compressor control device for a new energy commercial vehicle, wherein: The device comprises: The acquisition module is used to obtain the air supply parameter values ​​of the entire vehicle system in real time during the vehicle's driving process; The real-time acquisition of the vehicle system air supply parameter value during the vehicle's driving process includes: Real-time acquisition of a front axle real-time air pressure value or a rear axle real-time air pressure value in a current state of the vehicle during driving; Determining a braking parameter value of the vehicle when braking occurs during the driving process includes: Obtaining a brake pedal travel of the vehicle; Obtaining the operating status of the ABS module of the vehicle; Record the duration of braking; a determination module, configured to determine a braking parameter value of the vehicle when braking occurs during the driving process; a control module configured to, when it is determined that the air supply parameter value of the entire vehicle system at a current moment is less than a preset air supply threshold value and the braking parameter value at a current moment is greater than a preset braking frequency threshold value, control the air compressor using a second preset control strategy, wherein a second speed of the air compressor obtained using the second preset control strategy is greater than a first speed of the air compressor obtained using the first preset control strategy, and the first speed is a rated standard value; Obtaining a vehicle weight information parameter value of the vehicle, and if the vehicle weight information parameter value is greater than a preset vehicle load value, it is considered that the current load state of the vehicle is fully loaded; If the vehicle weight information parameter value is less than the preset vehicle load value, it is considered that the current load state of the vehicle is unloaded; When it is determined that the air supply parameter value of the entire vehicle system at the current moment is less than the preset air supply threshold and the braking parameter value at the current moment is greater than the preset braking frequency threshold, the second preset control strategy is adopted to control the air compressor, including: If it is determined that the brake pedal stroke of the vehicle meets the preset conditions, and The duration corresponding to the braking operation meets the preset duration, and Determine whether the real-time air pressure value of the front axle or the real-time air pressure value of the rear axle obtained in real time during the current state of the vehicle is greater than a preset pressure threshold value, and If the braking interval satisfies the preset interval, a second preset control strategy is adopted to control the air compressor; Determine whether the pressure drop parameter value after multiple braking is greater than a preset threshold; If it is determined that the pressure drop parameter value after the multiple braking steps is greater than the preset threshold value, a second preset control strategy is adopted to control the air compressor.

5. An electronic device comprising: processor; as well as A memory arranged to store computer-executable instructions, which, when executed, cause the processor to perform the method of any one of claims 1 to 3.

6. A computer-readable storage medium storing one or more programs, which, when executed by an electronic device including a plurality of application programs, causes the electronic device to execute the method according to any one of claims 1 to 3.

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