Vehicle Integration System

Abstract

This application provides an integrated vehicle system, including a main drive motor, a clutch fan, an air conditioning compressor, an air compressor, a generator, a power steering pump, a motor output shaft, gears and belts, and a processor. The motor output shaft is connected to the main drive motor, the clutch fan is connected to the main drive motor via the motor output shaft, the air conditioning compressor and the generator are each connected to the motor output shaft via belts, and the power steering pump and the air compressor are each connected to the motor output shaft via gears. The processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, generator, and power steering pump. The processor controls the output speed of the main drive motor, and the speed controls the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure in the air compressor, and the voltage of the generator. This application improves the integration of the vehicle and reduces the complexity of vehicle layout by using a single main drive motor to drive multiple functional accessories.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a vehicle integration system. Background Technology

[0002] As an important mode of transportation, heavy-duty commercial vehicles, under the general background of "emission reduction and carbon reduction", can meet the current expectations for the development of the whole vehicle by operating through electric drive, which can effectively reduce carbon emissions and save resources.

[0003] In the prior art, functional accessories in the vehicle integrated system, such as clutch fan, air conditioning compressor, air compressor, generator, and power steering pump, are each equipped with a separate drive motor and are driven by their respective corresponding drive motors.

[0004] However, the integration level of existing vehicle integration systems is low, and the layout of the entire vehicle is difficult. Summary of the Invention

[0005] This application provides a vehicle integration system to solve the problems of low integration level and high difficulty in vehicle layout in the prior art.

[0006] In a first aspect, this application provides a vehicle integrated system, including: a main drive motor, a clutch fan, an air conditioning compressor, an air compressor, a generator, a power steering pump, a motor output shaft, gears and belts, and a processor;

[0007] The motor output shaft is connected to the main drive motor;

[0008] The clutch fan is connected to the main drive motor via the motor output shaft;

[0009] The air conditioning compressor and the generator are respectively connected to the motor output shaft via the belt;

[0010] The steering pump and the air compressor are respectively connected to the motor output shaft via the gear;

[0011] The processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, generator, and steering oil pump respectively;

[0012] The processor is used to control the output speed of the main drive motor, and the speed is used to control the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure of the air compressor, and the voltage of the generator.

[0013] Optional components also include: engine and clutch;

[0014] The engine is connected to the main drive motor via the clutch;

[0015] The engine is connected to the processor, which controls the output speed of the engine.

[0016] Optionally, when the rotational speed is used to control the cooling capacity output by the clutch fan, the processor is specifically used for:

[0017] Determine whether the clutch fan is energized with high voltage;

[0018] If the high voltage is already applied, obtain the cooling requirements of the engine, the main drive motor, and the condenser respectively.

[0019] Based on the cooling requirements of the engine, the main drive motor, and the condenser, the maximum cooling requirement is determined.

[0020] Based on the maximum cooling demand, the main drive motor outputs a motor speed corresponding to the maximum cooling demand, thereby obtaining the first cooling capacity output by the clutch fan.

[0021] If the first cooling capacity meets the maximum cooling capacity requirement, then the current speed of the main drive motor is maintained;

[0022] If the first cooling capacity does not meet the maximum cooling capacity requirement, the total cooling capacity requirement is determined based on the cooling capacity requirement of the engine, the cooling capacity requirement of the main drive motor, and the cooling capacity requirement of the condenser.

[0023] Based on the total cooling capacity requirement, control the speed of the main drive motor and the opening of the clutch fan;

[0024] The cooling capacity output by the clutch fan is controlled according to the rotational speed of the main drive motor and the opening degree of the clutch fan.

[0025] Optionally, when the processor controls the speed of the main drive motor and the opening of the clutch fan according to the total cooling requirement, it is specifically used for:

[0026] Based on the total cooling demand, the opening of the control clutch fan is controlled to obtain the second cooling capacity output by the clutch fan;

[0027] If the second cooling capacity meets the total cooling capacity requirement, then the current opening of the clutch fan is maintained;

[0028] If the second cooling capacity does not meet the total cooling capacity requirement, the clutch fan is fully opened, and the main drive motor is increased by a preset first speed increment until the third cooling capacity output by the clutch fan meets the total cooling capacity requirement.

[0029] Maintain the clutch fan fully open and maintain the current speed of the main drive motor.

[0030] Optionally, the processor is further configured to:

[0031] If, after controlling the main drive motor to increase to its maximum speed by a preset first speed increment, the third cooling capacity output by the clutch fan still does not meet the total cooling capacity requirement, a high-temperature torque limiting warning will be output.

[0032] Optionally, when the rotational speed is used to control the cooling capacity output by the air conditioner compressor, the processor is specifically used for:

[0033] Determine whether the air conditioner compressor is powered on by high voltage;

[0034] If the high voltage is already applied, obtain the cooling requirements of the cab and the battery respectively.

[0035] Based on the cooling requirements of the cab and / or the cooling requirements of the battery, control the clutch of the air conditioning compressor to close.

[0036] Based on the cooling requirements of the cab and the battery, the maximum cooling requirement is determined.

[0037] Based on the maximum cooling demand, the speed of the main drive motor is controlled to obtain the first cooling capacity output by the air conditioning compressor;

[0038] If the first cooling capacity does not meet the maximum cooling capacity requirement, the main drive motor is controlled to increase by a preset second speed increment until the second cooling capacity output by the air conditioner compressor meets the maximum cooling capacity requirement.

[0039] Maintain the current speed of the main drive motor, and control the cooling capacity output of the air conditioning compressor according to the current speed.

[0040] Optionally, the processor is further configured to:

[0041] If, after controlling the main drive motor to increase to its maximum speed by a preset second speed increment, the second cooling capacity output by the air conditioning compressor still does not meet the maximum cooling capacity requirement, then the cooling capacity allocation in the cab will be reduced.

[0042] Optionally, when the rotational speed is used to control the air circuit pressure of the air compressor, the processor is specifically used to:

[0043] Determine whether the air compressor is powered on by high voltage;

[0044] If the air compressor is already powered on, obtain the current first air path pressure.

[0045] If the pressure in the first air path is less than a preset lower pressure threshold, the state of the clutch of the air compressor is obtained, including a closed state and an open state.

[0046] If the clutch of the air compressor is in the disengaged state, send a closing command to the clutch of the air compressor;

[0047] According to the closing command, the air compressor is controlled to pump air to obtain the second air circuit pressure of the air compressor;

[0048] If the pressure in the second air path is greater than or equal to the preset upper limit pressure threshold, a disconnection command is sent to the clutch of the air compressor.

[0049] According to the disconnect command, control the air compressor to stop pumping air;

[0050] If the pressure of the second air path is equal to the pressure of the first air path, then the main drive motor is controlled to increase by a preset third speed increment until a preset air path pressure threshold is reached, wherein the preset air path pressure threshold is greater than the pressure of the first air path.

[0051] Maintain the current speed of the main drive motor, and control the air pressure of the air compressor according to the current speed.

[0052] Optionally, the processor is further configured to:

[0053] If the air compressor's air pressure still fails to reach the preset air pressure threshold after the main drive motor is increased to its maximum speed by a preset third speed increment, a leak warning will be output.

[0054] Optionally, when the rotational speed is used to control the voltage of the generator, the processor is specifically used to:

[0055] Determine whether the generator is energized with high voltage;

[0056] If the engine is already powered on, obtain the current voltage of the engine;

[0057] If the voltage meets the preset normal operating voltage threshold, then control the main drive motor to increase by a preset fourth speed increment until the engine voltage reaches the preset normal operating voltage threshold.

[0058] Maintain the current speed of the main drive motor, and control the voltage of the generator according to the current speed.

[0059] Optionally, the processor is further configured to:

[0060] Determine whether the main drive motor is powered on by high voltage;

[0061] If the high voltage is already applied, obtain the required motor speed of the clutch fan, the required motor speed of the air conditioning compressor, the required motor speed of the air compressor, and the required motor speed of the generator respectively;

[0062] The maximum required motor speed is determined based on the required motor speed of the clutch fan, the required motor speed of the air conditioning compressor, the required motor speed of the air compressor, and the required motor speed of the generator.

[0063] Based on the maximum required motor speed, control the main drive motor to output a speed corresponding to the maximum required motor speed.

[0064] Optional features also include an accessory drive motor and a service brake;

[0065] The accessory drive motor and the service brake are respectively connected to the processor, and the accessory drive motor and the service brake are used to output power.

[0066] Optionally, the processor is further configured to:

[0067] Obtain the required braking power for the entire vehicle;

[0068] If the required braking power is less than or equal to the preset maximum power that the main drive motor can provide, then control the main drive motor to output power corresponding to the required braking power;

[0069] If the required braking power is greater than the preset maximum power that the main drive motor can provide, then calculate the first difference power between the required braking power and the preset maximum power.

[0070] If the first difference power is less than or equal to the preset maximum power of the accessory drive motor, then control the accessory drive motor to output power corresponding to the first difference power;

[0071] If the first difference power is greater than the preset maximum power of the accessory drive motor, then control the accessory drive motor to output power corresponding to the preset maximum power;

[0072] If the accessory drive motor outputs a preset maximum power but still fails to meet the braking power required by the vehicle, calculate the second difference power between the first difference power and the preset maximum power of the accessory drive motor.

[0073] Based on the second differential power, the service brake is controlled to output power corresponding to the second differential power.

[0074] This application provides a vehicle integrated system, including a main drive motor, a clutch fan, an air conditioning compressor, an air compressor, a generator, a power steering pump, a motor output shaft, gears and belts, and a processor. The motor output shaft is connected to the main drive motor; the clutch fan is connected to the main drive motor via the motor output shaft; the air conditioning compressor and the generator are each connected to the motor output shaft via belts; the power steering pump and the air compressor are each connected to the motor output shaft via gears; and the processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, generator, and power steering pump. The processor controls the output speed of the main drive motor, which in turn controls the cooling capacity of the clutch fan, the cooling capacity of the air conditioning compressor, the air pressure of the air compressor, and the voltage of the generator. This vehicle integrated system allows a single main drive motor to simultaneously drive the clutch fan, air conditioning compressor, air compressor, generator, and power steering pump, improving the overall integration of the vehicle and reducing the complexity of its layout. Attached Figure Description

[0075] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0076] Figure 1 This is a schematic diagram of the structure of a vehicle integration system provided in an embodiment of this application;

[0077] Figure 2 This is a schematic diagram of the structure of another vehicle integration system provided in the embodiments of this application;

[0078] Figure 3 A flowchart illustrating a method for controlling the cooling capacity output of a clutch fan, provided in an embodiment of this application;

[0079] Figure 4 A flowchart illustrating a method for controlling the cooling capacity output of an air conditioner compressor, provided in an embodiment of this application;

[0080] Figure 5 A schematic flowchart illustrating a method for controlling the air circuit pressure of an air compressor, provided in an embodiment of this application;

[0081] Figure 6 A schematic flowchart illustrating a method for controlling the voltage of a generator according to an embodiment of this application;

[0082] Figure 7 A flowchart illustrating a method for controlling the speed of a main drive motor, provided in an embodiment of this application;

[0083] Figure 8 This is a flowchart illustrating a method for controlling the output power of a main drive motor, as provided in an embodiment of this application.

[0084] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0085] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0086] In the description of the embodiments of this application, the terms "inner" and "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0087] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0088] First, let me explain the terms used in this application:

[0089] LIN stands for Local Interconnect Network, a low-cost serial communication network designed for distributed applications in automobiles, used to implement distributed electronic system control in vehicles.

[0090] Under the overarching goal of "emission reduction and carbon reduction," heavy-duty vehicles, as vehicles with high emissions, have attracted attention. As an important mode of transportation on roads, heavy-duty vehicles can effectively reduce carbon emissions and conserve resources through electric drive. Electric drive refers to vehicles powered by electricity, and these vehicles can be pure electric trucks, hydrogen fuel cell trucks, range-extended trucks, plug-in hybrid trucks, and other new energy trucks.

[0091] In the prior art, functional accessories in the vehicle integrated system, such as clutch fan, air conditioning compressor, air compressor, generator, power steering pump, etc., are each equipped with a separate drive motor. Driving each functional accessory requires the corresponding drive motor of each functional accessory as the drive control source.

[0092] However, existing vehicle integration systems have low integration levels and are difficult to deploy.

[0093] Therefore, to address the aforementioned technical problems in the prior art, this application proposes a vehicle integrated system, which includes: a main drive motor, a clutch fan, an air conditioning compressor, an air compressor, a generator, a power steering pump, a motor output shaft, gears and belts, and a processor. The main drive motor collectively serves as the drive control source for the clutch fan, air conditioning compressor, air compressor, generator, power steering pump, etc. This vehicle integrated system eliminates the need for separate drive motors for each functional accessory; only a single main drive motor is required, thus improving the overall integration of the vehicle and reducing the complexity of its layout.

[0094] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0095] Figure 1 This is a schematic diagram of the structure of a vehicle integration system provided in an embodiment of this application, such as... Figure 1 As shown, the integrated system includes: a main drive motor, a clutch fan, an air conditioning compressor, an air compressor, a generator, a steering oil pump, a motor output shaft, gears and belts, and a processor.

[0096] The connection relationship can be:

[0097] The motor output shaft is connected to the main drive motor.

[0098] The clutch fan is connected to the main drive motor via the motor output shaft.

[0099] The air conditioning compressor and generator are connected to the motor output shaft via belts.

[0100] The steering oil pump and the air compressor are respectively connected to the motor output shaft via gears.

[0101] The processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, generator, and steering oil pump.

[0102] The processor controls the output speed of the main drive motor, and the speed controls the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure of the air compressor, and the voltage of the generator.

[0103] Optionally, the main drive motor is used to provide a power source for the clutch fan, air conditioning compressor, air compressor, generator, etc.

[0104] Optionally, the motor output shaft is used to transmit power from the main drive motor.

[0105] Optionally, the clutch fan can be used to control the output cooling capacity. The clutch fan is also known as an electronically controlled clutch cooling fan, which can be an electronically controlled silicone oil clutch fan, etc.

[0106] Optionally, the air conditioning compressor can also be used to control the output cooling capacity, and it has its own clutch.

[0107] Optionally, an air compressor can be used to control the output air pressure, and it can be a clutch-type air compressor, etc.

[0108] Optionally, the generator can be used to control the output voltage; it can be a low-voltage generator or a LIN AC generator, etc.

[0109] Optionally, the processor can be a controller, electronic control unit (ECU), etc.

[0110] It is understood that the examples of the functional attachments mentioned above are for illustrative purposes only and are not intended to limit this application.

[0111] The vehicle integration system in this embodiment can be in pure electric drive mode, that is, the power source of the functional accessories comes from the main drive motor.

[0112] In the above embodiments of this application, the integrated vehicle system includes a main drive motor, a clutch fan, an air conditioning compressor, an air compressor, a generator, a power steering pump, a motor output shaft, gears and belts, and a processor. The motor output shaft is connected to the main drive motor; the clutch fan is connected to the main drive motor via the motor output shaft; the air conditioning compressor and the generator are connected to the motor output shaft via belts; the power steering pump and the air compressor are connected to the motor output shaft via gears; and the processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, and generator. The processor controls the output speed of the main drive motor, which in turn controls the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure in the air compressor, and the voltage of the generator. This integrated vehicle system, by using a single main drive motor to drive the clutch fan, air conditioning compressor, air compressor, generator, power steering pump, etc., improves the overall integration of the vehicle and reduces the complexity of its layout.

[0113] Figure 2 A schematic diagram of another vehicle integration system provided in this application embodiment is shown below. Figure 2 As shown, the integrated system includes a main drive motor, clutch fan, air conditioning compressor, air compressor, generator, steering oil pump, motor output shaft, gears and belts, processor, as well as an engine and clutch.

[0114] The connection relationship can be:

[0115] The engine is connected to the main drive motor via a clutch.

[0116] The engine is connected to the processor, which controls the engine's output speed.

[0117] The motor output shaft is connected to the main drive motor.

[0118] The clutch fan is connected to the main drive motor via the motor output shaft.

[0119] The air conditioning compressor and generator are connected to the motor output shaft via belts.

[0120] The steering oil pump and the air compressor are respectively connected to the motor output shaft via gears.

[0121] The processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, generator, and steering oil pump.

[0122] Please refer to the above embodiments for the function and type of each accessory. To avoid redundancy, this application will not repeat the description.

[0123] The vehicle integration system in this embodiment can be in hybrid drive mode, that is, the power source of the functional accessories comes from the engine.

[0124] In the above embodiments of this application, the vehicle integration system further includes an engine and a clutch. The engine is connected to the main drive motor via the clutch, and the engine is connected to a processor, which controls the engine's output speed. The vehicle integration system of this embodiment also uses a single main drive motor to drive the clutch fan, air conditioning compressor, air compressor, generator, power steering pump, etc., thereby improving the overall vehicle integration and reducing the complexity of vehicle layout.

[0125] Furthermore, based on the above embodiments, the control strategies of each functional accessory will be described in detail through the following multiple embodiments.

[0126] It should be noted that the control of the various functional attachments is not related by timing and can be performed synchronously or randomly. This application does not impose any time restrictions.

[0127] Figure 3 A flowchart illustrating a method for controlling the cooling capacity output of a clutch fan, as provided in an embodiment of this application, is shown below. Figure 3 As shown, the method includes the following steps:

[0128] S301. Determine if the clutch fan is energized with high voltage.

[0129] First, the power-on status of the clutch fan is checked. If the power-on is not completed, the subsequent steps are not executed.

[0130] S302. If the high voltage is already applied, obtain the cooling requirements of the engine, the main drive motor, and the condenser respectively.

[0131] If the clutch fan is powered on, obtain the cooling requirements of the engine, main drive motor and condenser respectively. The cooling requirements can be determined according to the required temperature of each functional accessory or set by the user according to the actual application.

[0132] S303. Based on the cooling requirements of the engine, the main drive motor, and the condenser, determine the maximum cooling requirement.

[0133] The cooling demand obtained in step S302 is judged to determine the maximum cooling demand.

[0134] S304. Based on the maximum cooling demand, control the output speed of the main drive motor to correspond to the maximum cooling demand, and obtain the first cooling capacity output by the clutch fan.

[0135] Based on the maximum cooling capacity requirement, the main drive motor is controlled to operate at the corresponding speed to obtain the first cooling capacity.

[0136] S305. Determine whether the first cooling capacity can meet the maximum cooling capacity requirement.

[0137] S306. If the first cooling capacity meets the maximum cooling demand, then maintain the current speed of the main drive motor.

[0138] If the first cooling capacity meets the maximum cooling demand, it means that the cooling capacity generated by the current speed of the main drive motor meets the demand.

[0139] S307. If the first cooling capacity does not meet the maximum cooling capacity requirement, the total cooling capacity requirement shall be determined based on the cooling capacity requirements of the engine, the main drive motor, and the condenser.

[0140] If the initial cooling capacity is insufficient to meet the maximum cooling demand, the cooling demand of the engine, the cooling demand of the main drive motor, and the cooling demand of the condenser are summed using a preset summation algorithm to obtain the total cooling demand.

[0141] S308. Based on the total cooling demand, control the opening of the clutch fan to obtain the second cooling capacity output by the clutch fan.

[0142] Based on the total cooling capacity requirement, the speed of the main drive motor and the opening of the clutch fan are controlled, and the cooling capacity output of the clutch fan is controlled based on the speed of the main drive motor and the opening of the clutch fan.

[0143] In this step, the main focus is on controlling the opening degree of the clutch fan. The larger the opening degree, the greater the cooling capacity output by the clutch fan.

[0144] S309. Determine whether the second cooling capacity meets the total cooling capacity requirement.

[0145] S310. If the second cooling capacity meets the total cooling capacity requirement, then maintain the current opening of the clutch fan.

[0146] If the second cooling capacity meets the total cooling capacity requirement, it means that the cooling capacity generated by the current opening of the clutch fan meets the requirement.

[0147] S311. If the second cooling capacity does not meet the total cooling capacity requirement, the clutch fan is fully opened, and the main drive motor is increased by a preset first speed increment to obtain the third cooling capacity.

[0148] If the second cooling capacity is insufficient to meet the total cooling capacity requirement, the clutch fan is fully opened, and the main drive motor is increased by a preset first speed increment until the third cooling capacity output by the clutch fan meets the total cooling capacity requirement.

[0149] S312. Determine whether the third cooling capacity can meet the total cooling capacity requirement.

[0150] S313. If the third cooling capacity meets the total cooling capacity requirement, then keep the clutch fan fully open and maintain the current speed of the main drive motor.

[0151] Among them, the current speed of the main drive motor is less than or equal to the maximum speed.

[0152] S314. If the third cooling capacity does not meet the total cooling capacity requirement, determine whether the current speed of the main drive motor has reached the maximum speed.

[0153] If the current speed of the main drive motor has not reached the maximum speed, continue to execute step S311.

[0154] S315. If the current speed of the main drive motor reaches the maximum speed, a high temperature torque limiting warning will be output.

[0155] If the third cooling capacity output by the clutch fan is still insufficient to meet the total cooling capacity requirement after the main drive motor is increased to its maximum speed by a preset first speed increment, a high temperature torque limit warning will be output.

[0156] Warning prompts can be issued through various means, such as a buzzer, a flashing and sound-emitting alarm, a voice alarm, or a visual display screen. This embodiment does not elaborate on the specific alarm devices used for warnings, and these devices are not intended to limit the scope of this application.

[0157] In the above embodiments of this application, by controlling the speed of the main drive motor and the opening degree of the clutch fan, the control of the cooling capacity output by the clutch fan is effectively improved.

[0158] Figure 4 A flowchart illustrating a method for controlling the cooling capacity output of an air conditioner compressor, as provided in this application embodiment, is shown below. Figure 4 As shown, the method includes the following steps:

[0159] S401. Determine if the air conditioner compressor is powered on by high voltage.

[0160] First, the power-on status of the air conditioner compressor is checked. If the power-on process is not complete, the subsequent steps will not be executed.

[0161] S402. If the high voltage is already applied, obtain the cooling requirements of the cab and the battery respectively.

[0162] The air conditioning compressor has two cooling outputs: one for cooling the driver's cab and the other for cooling the battery coolant.

[0163] S403. Control the clutch of the air conditioning compressor to close according to the cooling requirements of the cab and / or the cooling requirements of the battery.

[0164] If there is a cooling requirement in the cab, or a cooling requirement in the battery, or both, then the clutch of the air conditioning compressor needs to be closed to provide cooling.

[0165] The air conditioning compressor clutch is controlled by a 0 / 1 on / off switch.

[0166] S404. Determine the maximum cooling requirement based on the cooling requirements of the cab and the battery.

[0167] Then, the cooling requirements of the cab and the battery are assessed to determine the maximum cooling requirement.

[0168] S405. Based on the maximum cooling capacity requirement, control the speed of the main drive motor to obtain the first cooling capacity output by the air conditioning compressor.

[0169] Based on the maximum cooling demand, the main drive motor is controlled to operate at a speed corresponding to the maximum cooling demand, thereby obtaining the first cooling capacity output by the air conditioning compressor.

[0170] S406. Determine whether the first cooling capacity meets the maximum cooling capacity requirement.

[0171] S407. If the first cooling capacity meets the maximum cooling capacity requirement, the current speed of the main drive motor is maintained, and the cooling capacity output by the air conditioner compressor is controlled according to the current speed.

[0172] Among them, the current speed of the main drive motor is less than or equal to the maximum speed.

[0173] S408. If the first cooling capacity does not meet the maximum cooling capacity requirement, control the main drive motor to increase by a preset second speed increment.

[0174] If the first cooling capacity does not meet the maximum cooling capacity requirement, the main drive motor is controlled to increase by a preset second speed increment until the second cooling capacity output by the air conditioning compressor meets the maximum cooling capacity requirement.

[0175] S409. Determine whether the current speed of the main drive motor has reached the maximum speed.

[0176] If the current speed of the main drive motor has not reached the maximum speed, continue to execute step S406.

[0177] S410. If the current speed of the main drive motor reaches the maximum speed, then control the main drive motor to run at the maximum speed to obtain the second cooling capacity.

[0178] The main drive motor is controlled to operate at its maximum speed to increase the cooling capacity output by the air conditioner compressor, thus obtaining a second cooling capacity.

[0179] S411. Determine whether the second cooling capacity meets the maximum cooling capacity requirement.

[0180] S412. If the second cooling capacity does not meet the maximum cooling capacity requirement, reduce the cooling capacity allocation in the cab.

[0181] If the second cooling capacity output by the air conditioning compressor is still insufficient to meet the maximum cooling capacity requirement after the main drive motor is increased to the maximum speed by a preset second speed increment, the cooling capacity distribution in the cab will be reduced to ensure that the battery cooling capacity can meet the requirements and protect important components.

[0182] If the second cooling capacity meets the maximum cooling capacity requirement, then proceed to step S410.

[0183] In the above embodiments of this application, by controlling the speed of the main drive motor, the control of the cooling capacity output by the air conditioner compressor is effectively improved.

[0184] Figure 5 A schematic flowchart illustrating a method for controlling the air circuit pressure of an air compressor, as provided in this application embodiment, is shown below. Figure 5 As shown, the method includes the following steps:

[0185] S501. Determine if the air compressor is powered on at high voltage.

[0186] First, the power-on status of the air compressor is checked. If the power-on process is not complete, the subsequent steps will not be executed.

[0187] S502. If the high voltage is already applied, obtain the current first air circuit pressure of the air compressor.

[0188] S503. Determine whether the pressure of the first air path is less than the preset lower pressure threshold.

[0189] In this embodiment, a lower pressure threshold, an upper pressure threshold, and an intermediate pressure threshold are preset for the gas path pressure.

[0190] Specifically, inflation begins when the air pressure is below the lower pressure threshold. Inflation stops when the air pressure exceeds the upper pressure threshold. Inflation does not require inflation when the air pressure is at the intermediate pressure threshold.

[0191] If the pressure in the first air path is greater than or equal to the preset lower pressure threshold, a disconnect command is sent to the clutch of the air compressor.

[0192] S504. If the pressure of the first air path is less than the preset lower pressure threshold, obtain the state of the air compressor's clutch.

[0193] The clutch of the air compressor has two states: closed and open.

[0194] If the pressure in the first air path is less than the preset lower pressure threshold, the state of the air compressor's clutch is determined.

[0195] S505. If the clutch of the air compressor is in the open state, send a closing command to the clutch of the air compressor.

[0196] S506. According to the closing command, control the air compressor to pump air to obtain the second air circuit pressure of the air compressor.

[0197] The closing command is used to control the air compressor to pump air.

[0198] S507. Determine whether the pressure of the second air path is greater than or equal to the preset upper limit pressure threshold.

[0199] If the pressure in the second air path is less than the preset upper limit pressure threshold, continue with step S506.

[0200] S508. If the pressure in the second air circuit is greater than or equal to the preset upper limit pressure threshold, a disconnection command is sent to the clutch of the air compressor.

[0201] S509. According to the disconnection command, control the air compressor to stop pumping air.

[0202] The disconnect command is used to control the air compressor to stop pumping air.

[0203] S510. Determine whether the pressure of the second air path is equal to the pressure of the first air path.

[0204] S511. If the pressure of the second air path is equal to the pressure of the first air path, control the main drive motor to increase by a preset third speed increment until the preset air path pressure threshold is reached.

[0205] The preset air pressure threshold is greater than the first air pressure.

[0206] If the pressure in the second air path reaches the preset air path pressure threshold, the current speed of the main drive motor is maintained, and the air path pressure of the air compressor is controlled according to the current speed.

[0207] The current speed of the main drive motor is less than the maximum speed of the main drive motor.

[0208] S512. Determine whether the current speed of the main drive motor has reached the maximum speed when the pressure of the second air path reaches the preset air path pressure threshold.

[0209] S513. If the current speed of the main drive motor reaches the maximum speed, an air leakage warning will be output.

[0210] If the air compressor's air pressure still fails to reach the preset air pressure threshold after the main drive motor is increased to its maximum speed by the preset third speed increment, a leak warning will be output.

[0211] Warning prompts can be issued through various means, such as a buzzer, a flashing and sound-emitting alarm, a voice alarm, or a visual display screen. This embodiment does not elaborate on the specific alarm devices used for warnings, and these devices are not intended to limit the scope of this application.

[0212] It should be noted that in this application, steps S507-S509 and steps S510-S513 do not have a specific execution order and can be performed simultaneously.

[0213] In the above embodiments of this application, by controlling the speed of the main drive motor, the control of the air pressure of the compressor is effectively improved.

[0214] Figure 6 A flowchart illustrating a method for controlling the voltage of a generator, as provided in an embodiment of this application, is shown below. Figure 6 As shown, the method includes the following steps:

[0215] S601. Determine if the generator is energized with high voltage.

[0216] First, the power-on status of the generator is checked. If the power-on process is not complete, the subsequent steps are not executed.

[0217] S602. If the high voltage is already applied, obtain the current voltage of the engine.

[0218] S603. Determine whether the voltage meets the preset normal operating voltage threshold.

[0219] The normal operating voltage has been predefined, for example, it can be 24V.

[0220] S604. If the voltage meets the preset normal operating voltage threshold, then maintain the current speed of the main drive motor.

[0221] If the voltage meets the preset normal operating voltage threshold, it means that the generator can operate normally, and the current speed of the main drive motor is maintained.

[0222] S605. If the voltage does not meet the preset normal operating voltage threshold, control the main drive motor to increase by the preset fourth speed increment.

[0223] If the voltage does not meet the preset normal operating voltage threshold, the main drive motor is controlled to increase at a preset fourth speed increment until the engine voltage reaches the preset normal operating voltage threshold.

[0224] If the preset normal operating voltage threshold is reached, the current speed of the main drive motor is maintained, and the voltage of the generator is controlled according to the current speed.

[0225] Among them, the current speed of the main drive motor is less than or equal to the maximum speed.

[0226] S606. Determine whether the current speed of the main drive motor has reached the maximum speed.

[0227] If the current speed of the main drive motor has not reached the maximum speed, continue to execute step S603.

[0228] S607. If the current speed of the main drive motor reaches the maximum speed, an overload warning will be issued for the output circuit.

[0229] If the engine voltage still fails to reach the preset normal operating voltage threshold after the main drive motor is increased to its maximum speed by the preset fourth speed increment, an overload warning will be issued for the output circuit.

[0230] Warning prompts can be issued through various means, such as a buzzer, a flashing and sound-emitting alarm, a voice alarm, or a visual display screen. This embodiment does not elaborate on the specific alarm devices used for warnings, and these devices are not intended to limit the scope of this application.

[0231] In the above embodiments of this application, the control of the generator voltage is effectively improved by controlling the speed of the main drive motor.

[0232] Figure 7 A flowchart illustrating a method for controlling the speed of a main drive motor, as provided in an embodiment of this application, is shown below. Figure 7 As shown, the method includes the following steps:

[0233] S701. Determine whether the main drive motor is powered on by high voltage.

[0234] First, the power-on status of the main drive motor is checked. If the power-on is not completed, the subsequent steps are not executed.

[0235] S702. If the high voltage is already applied, obtain the required motor speeds of the clutch fan, air conditioning compressor, air compressor, and generator respectively.

[0236] If the main drive motor is already powered on, obtain the required motor speeds for the clutch fan, air conditioning compressor, air compressor, and generator respectively.

[0237] The required motor speed can be set by the user based on actual needs or determined by the application parameters of the functional accessories.

[0238] S703. Determine the maximum required motor speed based on the required motor speed of the clutch fan, the required motor speed of the air conditioning compressor, the required motor speed of the air compressor, and the required motor speed of the generator.

[0239] The required motor speeds for the clutch fan, air conditioning compressor, air compressor, and generator are determined, and the maximum required motor speed is identified.

[0240] S704. Based on the maximum required motor speed, control the output speed of the main drive motor to correspond to the maximum required motor speed.

[0241] In the above embodiments of this application, a main drive motor is used to provide output speed for different functional accessories, which effectively improves the utilization rate of the main drive motor.

[0242] In this application, the vehicle integrated system also includes: an accessory drive motor and a service brake. The accessory drive motor and the service brake are respectively connected to the processor, and are used for output power.

[0243] Figure 8 A flowchart illustrating a method for controlling the output power of a main drive motor, as provided in an embodiment of this application, is shown below. Figure 8 As shown, the method includes the following steps:

[0244] S801, Obtain the required braking power for the entire vehicle.

[0245] To achieve the recovery of braking energy of the entire vehicle, this embodiment can also control the output power of the main drive motor.

[0246] S802. Determine whether the required braking power is less than or equal to the preset maximum power that the main drive motor can provide.

[0247] S803. If the required braking power is less than or equal to the preset maximum power that the main drive motor can provide, then control the main drive motor to output power corresponding to the required braking power.

[0248] If the required braking power is less than or equal to the preset maximum power that the main drive motor can provide, it means that the main drive motor can provide power greater than the required braking power. Therefore, in order to meet the usage requirements, the main drive motor is controlled to output power corresponding to the required braking power.

[0249] S804. If the required braking power is greater than the preset maximum power that the main drive motor can provide, then calculate the first difference power between the required braking power and the preset maximum power.

[0250] If the required braking power exceeds the preset maximum power that the main drive motor can provide, it means that the power that the main drive motor can provide does not meet the usage requirements.

[0251] Therefore, based on the preset difference algorithm, the first difference power between the required braking power and the preset maximum power is calculated.

[0252] S805. Determine whether the first difference power is greater than the preset maximum power of the accessory drive motor.

[0253] S806. If the first difference power is less than or equal to the preset maximum power of the accessory drive motor, then control the accessory drive motor to output power corresponding to the first difference power.

[0254] If the first difference power is less than or equal to the preset maximum power of the accessory drive motor, it means that the power that the accessory drive motor can provide meets the usage requirements.

[0255] S807. If the first difference power is greater than the preset maximum power of the accessory drive motor, then control the accessory drive motor to output power corresponding to the preset maximum power.

[0256] If the first difference power is greater than the preset maximum power of the accessory drive motor, it means that the power that the accessory drive motor can provide does not meet the usage requirements.

[0257] S808. If the output of the accessory drive motor at its preset maximum power still fails to meet the braking power required by the vehicle, calculate the second difference power between the first difference power and the preset maximum power of the accessory drive motor.

[0258] S809. Based on the second differential power, control the service brake to output power corresponding to the second differential power.

[0259] In the above embodiments of this application, by controlling the main drive motor, the control of the vehicle's required braking power is effectively improved.

[0260] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0261] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A vehicle integration system, characterized in that, include: Main drive motor, clutch fan, air conditioning compressor, air compressor, generator, steering oil pump, motor output shaft, gears and belts, processor; The motor output shaft is connected to the main drive motor; The clutch fan is connected to the main drive motor via the motor output shaft; The air conditioning compressor and the generator are respectively connected to the motor output shaft via the belt; The steering pump and the air compressor are respectively connected to the motor output shaft via the gear; The processor is connected to the main drive motor, clutch fan, air conditioning compressor, air compressor, generator, and steering oil pump respectively; The processor is used to control the output speed of the main drive motor, and the speed is used to control the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure of the air compressor, and the voltage of the generator; The processor is also used for: After the main drive motor outputs the specified speed, if at least one of the following—the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure of the air compressor, and the voltage of the generator—does not reach the preset required value, then the main drive motor is controlled to increase its speed by a preset increment until the cooling capacity output by the clutch fan, the cooling capacity output by the air conditioning compressor, the air pressure of the air compressor, and the voltage of the generator reach the corresponding required value or the main drive motor reaches its maximum speed.

2. The vehicle integration system according to claim 1, characterized in that, Also includes: Engine, clutch; The engine is connected to the main drive motor via the clutch; The engine is connected to the processor, which controls the output speed of the engine.

3. The vehicle integration system according to claim 2, characterized in that, When the rotational speed is used to control the cooling capacity output by the clutch fan, the processor is specifically used for: Determine whether the clutch fan is energized with high voltage; If the high voltage is already applied, obtain the cooling requirements of the engine, the main drive motor, and the condenser respectively. Based on the cooling requirements of the engine, the main drive motor, and the condenser, the maximum cooling requirement is determined. Based on the maximum cooling demand, the main drive motor outputs a motor speed corresponding to the maximum cooling demand, thereby obtaining the first cooling capacity output by the clutch fan. If the first cooling capacity meets the maximum cooling capacity requirement, then the current speed of the main drive motor is maintained; If the first cooling capacity does not meet the maximum cooling capacity requirement, the total cooling capacity requirement is determined based on the cooling capacity requirement of the engine, the cooling capacity requirement of the main drive motor, and the cooling capacity requirement of the condenser. Based on the total cooling capacity requirement, control the speed of the main drive motor and the opening of the clutch fan; The cooling capacity output by the clutch fan is controlled according to the rotational speed of the main drive motor and the opening degree of the clutch fan.

4. The vehicle integration system according to claim 3, characterized in that, When the processor controls the speed of the main drive motor and the opening of the clutch fan according to the total cooling requirement, it is specifically used for: Based on the total cooling demand, the opening of the clutch fan is controlled to obtain the second cooling capacity output by the clutch fan; If the second cooling capacity meets the total cooling capacity requirement, then the current opening of the clutch fan is maintained; If the second cooling capacity does not meet the total cooling capacity requirement, the clutch fan is fully opened, and the main drive motor is increased by a preset first speed increment until the third cooling capacity output by the clutch fan meets the total cooling capacity requirement. Maintain the clutch fan fully open and maintain the current speed of the main drive motor.

5. The vehicle integration system according to claim 4, characterized in that, The processor is also used for: If, after controlling the main drive motor to increase to its maximum speed by a preset first speed increment, the third cooling capacity output by the clutch fan still does not meet the total cooling capacity requirement, a high-temperature torque limiting warning will be output.

6. The vehicle integration system according to claim 2, characterized in that, When the rotational speed is used to control the cooling capacity output by the air conditioner compressor, the processor is specifically used for: Determine whether the air conditioner compressor is powered on by high voltage; If the high voltage is already applied, obtain the cooling requirements of the cab and the battery respectively. Based on the cooling requirements of the cab and / or the cooling requirements of the battery, control the clutch of the air conditioning compressor to close. Based on the cooling requirements of the cab and the battery, the maximum cooling requirement is determined. Based on the maximum cooling demand, the speed of the main drive motor is controlled to obtain the first cooling capacity output by the air conditioning compressor; If the first cooling capacity does not meet the maximum cooling capacity requirement, the main drive motor is controlled to increase by a preset second speed increment until the second cooling capacity output by the air conditioner compressor meets the maximum cooling capacity requirement. Maintain the current speed of the main drive motor, and control the cooling capacity output of the air conditioning compressor according to the current speed.

7. The vehicle integration system according to claim 6, characterized in that, The processor is also used for: If, after controlling the main drive motor to increase to its maximum speed by a preset second speed increment, the second cooling capacity output by the air conditioning compressor still does not meet the maximum cooling capacity requirement, then the cooling capacity allocation in the cab will be reduced.

8. The vehicle integration system according to claim 2, characterized in that, When the rotational speed is used to control the air pressure of the air compressor, the processor is specifically used for: Determine whether the air compressor is powered on by high voltage; If the air compressor is already powered on, obtain the current first air path pressure. If the pressure in the first air path is less than a preset lower pressure threshold, the state of the clutch of the air compressor is obtained, including a closed state and an open state. If the clutch of the air compressor is in the disengaged state, send a closing command to the clutch of the air compressor; According to the closing command, the air compressor is controlled to pump air to obtain the second air circuit pressure of the air compressor; If the pressure in the second air path is greater than or equal to the preset upper limit pressure threshold, a disconnection command is sent to the clutch of the air compressor. According to the disconnect command, control the air compressor to stop pumping air; If the pressure of the second air path is equal to the pressure of the first air path, then the main drive motor is controlled to increase by a preset third speed increment until a preset air path pressure threshold is reached, wherein the preset air path pressure threshold is greater than the pressure of the first air path. Maintain the current speed of the main drive motor, and control the air pressure of the air compressor according to the current speed.

9. The vehicle integration system according to claim 8, characterized in that, The processor is also used for: If the air compressor's air pressure still fails to reach the preset air pressure threshold after the main drive motor is increased to its maximum speed by a preset third speed increment, a leak warning will be output.

10. The vehicle integration system according to claim 2, characterized in that, When the rotational speed is used to control the voltage of the generator, the processor is specifically used for: Determine whether the generator is energized with high voltage; If the generator is already powered on at high voltage, obtain the current voltage of the generator; If the voltage does not meet the preset normal operating voltage threshold, the main drive motor is controlled to increase by a preset fourth speed increment until the voltage of the generator reaches the preset normal operating voltage threshold. Maintain the current speed of the main drive motor, and control the voltage of the generator according to the current speed.

11. The vehicle integration system according to claim 2, characterized in that, The processor is also used for: Determine whether the main drive motor is powered on by high voltage; If the high voltage is already applied, obtain the required motor speed of the clutch fan, the required motor speed of the air conditioning compressor, the required motor speed of the air compressor, and the required motor speed of the generator respectively; The maximum required motor speed is determined based on the required motor speed of the clutch fan, the required motor speed of the air conditioning compressor, the required motor speed of the air compressor, and the required motor speed of the generator. Based on the maximum required motor speed, control the main drive motor to output a speed corresponding to the maximum required motor speed.

12. The vehicle integration system according to claim 2, characterized in that, It also includes accessory drive motors and service brakes; The accessory drive motor and the service brake are respectively connected to the processor, and the accessory drive motor and the service brake are used to output power.

13. The vehicle integration system according to claim 12, characterized in that, The processor is also used for: Obtain the required braking power for the entire vehicle; If the required braking power is less than or equal to the preset maximum power that the main drive motor can provide, then control the main drive motor to output power corresponding to the required braking power; If the required braking power is greater than the preset maximum power that the main drive motor can provide, then calculate the first difference power between the required braking power and the preset maximum power. If the first difference power is less than or equal to the preset maximum power of the accessory drive motor, then control the accessory drive motor to output power corresponding to the first difference power; If the first difference power is greater than the preset maximum power of the accessory drive motor, then control the accessory drive motor to output power corresponding to the preset maximum power; If the accessory drive motor outputs a preset maximum power but still fails to meet the braking power required by the vehicle, calculate the second difference power between the first difference power and the preset maximum power of the accessory drive motor. Based on the second differential power, the service brake is controlled to output power corresponding to the second differential power.

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