CAN control system for integrated heating and cooling air conditioning in mining trucks

Abstract

This utility model discloses a CAN control system for an integrated heating and cooling air conditioner in a mining truck. The air conditioner controller is connected to the vehicle controller and the electric compressor drive module via CAN lines. The vehicle controller is communicatively connected to a display. The electric compressor drive module is electrically connected to an electric compressor. The air conditioner controller is electrically connected to a high-pressure sensor and a low-pressure sensor. The air conditioner controller is also connected to a blower via a FET. The vehicle controller is electrically connected to a PTC heater, which is connected to the air conditioner controller via a CAN line. The air conditioner controller is also electrically connected to a temperature sensor array. This utility model's integrated heating and cooling air conditioner CAN control system for mining trucks integrates multiple sensors to achieve automatic control of the cooling, heating, and airflow of the mining truck's air conditioning, improving the comfort of the driving environment. Simultaneously, the CAN bus communication ensures the real-time performance and reliability of the control.

Description

Technical Field

[0001] This utility model belongs to the technical field of air conditioning equipment for mining trucks, specifically relating to a CAN control system for an integrated heating and cooling air conditioning system for mining trucks. Background Technology

[0002] Mining vehicles often operate in harsh, dusty, high-temperature, or low-temperature complex environments, placing higher demands on the temperature control system in the cab and increasing the requirements for the comfort of drivers and passengers. As a key component for enhancing comfort, the air conditioning system needs to have stable cooling and heating functions. Traditional mining truck air conditioning systems mostly use independent control methods, resulting in low communication efficiency between components, poor communication and linkage with the overall vehicle system, slow system response, difficulty in adjusting the air conditioning operation status in real time according to environmental changes, low control precision, and susceptibility to failure under complex operating conditions. To improve the comfort, system reliability, and automation level of the mining truck cab, there is an urgent need for a highly integrated, fast-responding, and linkage-controlled air conditioning system. Utility Model Content The purpose of this invention is to provide a CAN control system for integrated heating and cooling air conditioning in mining trucks, enabling the air conditioning system to work in tandem with the entire vehicle, thereby improving control accuracy and reliability.

[0003] The technical solution adopted in this utility model is a CAN control system for integrated heating and cooling air conditioning in mining trucks, including an air conditioning controller. The air conditioning controller is connected to the vehicle controller and the electric compressor drive module via CAN lines. The vehicle controller is also connected to a display via communication. The electric compressor drive module is electrically connected to an electric compressor. The air conditioning controller is electrically connected to a high-pressure sensor and a low-pressure sensor. The air conditioning controller is also connected to a blower via a FET. The vehicle controller is electrically connected to a PTC heater. The PTC heater is connected to the air conditioning controller via a CAN line. The air conditioning controller is electrically connected to a temperature sensor group.

[0004] The present invention is further characterized in that, The temperature sensor group includes an evaporator temperature sensor, a supply air temperature sensor, and an outlet air temperature sensor, which are electrically connected to the air conditioning controller.

[0005] The air conditioning controller communicates bidirectionally with the vehicle controller via the first CAN line, and the air conditioning controller communicates bidirectionally with the electric compressor drive module via the second CAN line.

[0006] The display communicates bidirectionally with the vehicle controller.

[0007] The blower is also connected to a blower relay.

[0008] The electric compressor drive module is equipped with a high-voltage input port for connecting to the vehicle's high-voltage power supply.

[0009] The air conditioner controller is also connected to the indoor light control circuit.

[0010] FET stands for Field-Effect Transistor.

[0011] Compared with the prior art, the CAN control system for integrated heating and cooling air conditioning in mining trucks of this utility model has the following advantages: 1) The use of CAN bus enables bidirectional high-speed and reliable communication between the air conditioning ECU and the vehicle VCU and electric compressor drive module, improving system response speed and stability, and ensuring the real-time nature of control commands and status feedback; 2) It integrates multiple sensors to realize cooling, heating, air supply and multi-sensor detection functions, forming a closed-loop control, which improves the control accuracy and stability of the air conditioning system and can adapt to the complex working environment of mining trucks. 3) Each component has a clear division of labor and strong interoperability, which facilitates fault diagnosis and maintenance and improves the reliability and maintainability of the system. Attached Figure Description

[0012] Figure 1 This is the electrical connection schematic diagram of the integrated heating and cooling air conditioning control system for mining trucks of this utility model.

[0013] In the diagram, 1. Vehicle controller, 2. Display, 3. Blower relay, 4. Blower, 5. FET, 6. Air conditioning controller, 7. Electric compressor drive module, 8. Electric compressor, 9. Evaporator temperature sensor, 10. Supply air temperature sensor, 11. Outlet air temperature sensor, 12. PTC heater. Detailed Implementation

[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] Example 1 This utility model relates to a CAN control system for an integrated heating and cooling air conditioner in mining trucks, such as... Figure 1 As shown, it includes an air conditioning controller 6, a vehicle controller 1, a display 2, an electric compressor 8, an electric compressor drive module 7, a blower 4, a PTC heater 12, a high-pressure sensor, a low-pressure sensor, a temperature sensor group, and a CAN bus.

[0016] Communication connection: Air conditioning controller 6, hereinafter referred to as air conditioning ECU, vehicle controller 1, hereinafter referred to as vehicle controller VCU, the air conditioning ECU is the core controller, the air conditioning ECU is connected to the vehicle VCU through CAN1, the B7 and B8 ports of the air conditioning ECU are CAN and CANH of CAN1 respectively, receive vehicle status commands and feedback the air conditioning working status, realize bidirectional transmission of commands and status.

[0017] The air conditioning ECU is connected to the electric compressor drive module 7 via CAN2. The B9 and B10 ports of the air conditioning ECU are CANL and CANH of CAN2, respectively, to achieve bidirectional communication and control the operation of the compressor.

[0018] Display 2 serves as a human-machine interface, communicating bidirectionally with the vehicle's VCU via the CAN bus. It is used for interactive operation of the virtual buttons for air conditioning control. Users can set parameters such as air conditioning temperature, airflow, and fan speed through Display 2, and the parameters are forwarded to the air conditioning ECU via the vehicle's VCU.

[0019] Refrigeration control: The electric compressor 8 is controlled by the air conditioning ECU through the electric compressor drive module 7 to realize the start and stop of the refrigeration function and power regulation. The high pressure sensor and low pressure sensor detect the high and low pressure status of the refrigeration system in real time and feed the signal back to the air conditioning ECU to realize the pressure protection and closed-loop control of the refrigeration system.

[0020] The P1 and P2 ports of the electric compressor drive module 7 are connected to a high-voltage power supply. The air conditioning ECU sends control commands to the electric compressor drive module 7 via CAN2 to drive the electric compressor 8 to work.

[0021] The high-pressure sensor and low-pressure sensor detect the high-pressure and low-pressure signals of the refrigeration system respectively and transmit them to the corresponding ports of the air conditioning ECU. The air conditioning ECU adjusts the operating status of the electric compressor according to the pressure signals.

[0022] Air supply control: Blower 4 is connected to air conditioning ECU via FET5. The air conditioning ECU adjusts the conduction state of FET5 to control the speed of blower 4, thereby achieving stepless adjustment of air supply volume; at the same time, blower relay 3 is configured to protect the power supply of blower 4.

[0023] Heating control: The PTC heater 12 is electrically connected to the vehicle VCU. The air conditioning ECU sends a heating command to the vehicle VCU via the CAN bus. The vehicle VCU controls the on / off of the PTC heater 12 and uses the water heating system to achieve the heating function.

[0024] Temperature detection: The temperature sensor group includes evaporator temperature sensor 9, supply air temperature sensor 10, and outlet air temperature sensor 11, which collect temperature parameters at their respective locations and transmit the signals to the A6, A9, and A10 ports of the air conditioning ECU. The air conditioning ECU adjusts the cooling, heating, and air supply status according to the temperature signals and fan speed requirements.

[0025] Auxiliary functions: The air conditioning ECU is also connected to the interior light control circuit, which can control the interior lighting in conjunction with the air conditioning working mode or user operation, so as to realize the linkage control between air conditioning and interior lighting, improve the convenience of use and driving experience.

[0026] Example 2 The present invention relates to a CAN control system for an integrated heating and cooling air conditioner in a mining truck, comprising an air conditioning ECU, a vehicle VCU, a display 2, an electric compressor 8, an electric compressor drive module 7, a blower 4, a PTC heater 12, a high-pressure sensor, a low-pressure sensor, a temperature sensor group, and a CAN bus.

[0027] The air conditioning controller 6 is connected to the vehicle controller 1 and the electric compressor drive module 7 via CAN lines. The vehicle controller 1 is connected to the display 2 for interaction with the virtual buttons for air conditioning control. The electric compressor 7 is electrically connected to the air conditioning ECU via the electric compressor drive module 7.

[0028] The high-pressure sensor and the low-pressure sensor are electrically connected to the air conditioning controller 6 respectively, and are used to detect the high and low pressure status of the refrigeration system. Blower 4 is electrically connected to the air conditioning ECU via FET5 to achieve wind speed regulation.

[0029] FET5 is a field-effect transistor.

[0030] The PTC heater 12 is electrically connected to the vehicle control unit (VCU) and receives heating control commands from the air conditioning ECU via the CAN bus. The air conditioning controller 6 is electrically connected to a temperature sensor group. The temperature sensor group includes an evaporator temperature sensor 9, a supply air temperature sensor 10, and an outlet air temperature sensor 11, which are electrically connected to the air conditioning controller 6 and are used to collect the temperature parameters of the air conditioning system.

[0031] Example 3 Based on Embodiment 2, the air conditioning controller 6 communicates bidirectionally with the vehicle controller 1 via the first CAN line, and the air conditioning controller 6 communicates bidirectionally with the electric compressor drive module 7 via the second CAN line.

[0032] Display 2 communicates bidirectionally with vehicle controller 1.

[0033] Example 4 Based on embodiment 3, the blower 4 is also connected to a blower relay 3, which is used to protect and control the power supply of the blower.

[0034] Example 5 Based on Example 4, the electric compressor drive module 7 is provided with a high-voltage input port for connecting to the vehicle's high-voltage power supply.

[0035] Example 6 Based on embodiment 5, the air conditioning controller 6 is also connected to an indoor lighting control circuit, enabling coordinated control between the air conditioning system and the vehicle interior lighting.

[0036] Example 7 The present invention relates to a CAN control system for an integrated heating and cooling air conditioner in a mining truck, comprising an air conditioning ECU, a vehicle VCU, a display 2, an electric compressor 8, an electric compressor drive module 7, a blower 4, a PTC heater 12, a high-pressure sensor, a low-pressure sensor, a temperature sensor group, and a CAN bus.

[0037] The air conditioning controller 6 is connected to the vehicle controller 1 and the electric compressor drive module 7 via CAN lines. The vehicle controller 1 is connected to the display 2 for interaction with the virtual buttons for air conditioning control. The electric compressor 7 is electrically connected to the air conditioning ECU via the electric compressor drive module 7.

[0038] The high-pressure sensor and the low-pressure sensor are electrically connected to the air conditioning controller 6 respectively, and are used to detect the high and low pressure status of the refrigeration system. Blower 4 is electrically connected to the air conditioning ECU via FET5 to achieve wind speed regulation.

[0039] FET5 is a field-effect transistor.

[0040] The PTC heater 12 is electrically connected to the vehicle control unit (VCU) and receives heating control commands from the air conditioning ECU via the CAN bus. The air conditioning controller 6 is electrically connected to a temperature sensor group. The temperature sensor group includes an evaporator temperature sensor 9, a supply air temperature sensor 10, and an outlet air temperature sensor 11, which are electrically connected to the air conditioning controller 6 and are used to collect the temperature parameters of the air conditioning system.

[0041] The air conditioning controller 6 communicates bidirectionally with the vehicle controller 1 via the first CAN line, and the air conditioning controller 6 communicates bidirectionally with the electric compressor drive module 7 via the second CAN line.

[0042] Display 2 communicates bidirectionally with vehicle controller 1.

[0043] The blower 4 is also connected to a blower relay 3, which is used to protect and control the power supply of the blower.

[0044] The electric compressor drive module 7 is equipped with a high-voltage input port for connecting to the vehicle's high-voltage power supply.

[0045] The air conditioning controller 6 is also connected to a condenser fan and multiple damper motors, which control the face air damper, foot air damper, and recirculation air damper respectively. The condenser fan is equipped with a relay.

[0046] The air conditioner controller 6 is also connected to a water pump, which is equipped with a relay.

[0047] The working process of the integrated heating and cooling air conditioning CAN control system for mining trucks of this utility model is as follows: The user sets the target temperature via the display. The vehicle's VCU sends the set value to the air conditioning ECU via CAN1. The air conditioning ECU calculates control commands based on feedback from the in-vehicle temperature sensor group. If cooling is required, it controls the electric compressor to work via CAN2 and adjusts the blower speed at the same time. If heating is required, it notifies the vehicle's VCU to start the PTC heater via CAN1. The system monitors pressure and temperature signals in real time and performs closed-loop regulation and safety protection.

[0048] The advantages of the CAN control system for integrated heating and cooling air conditioning in mining trucks of this utility model are as follows: 1) The use of CAN bus enables bidirectional high-speed and reliable communication between the air conditioning ECU and the vehicle VCU and electric compressor drive module, improving system response speed and stability, and ensuring the real-time nature of control commands and status feedback; 2) It integrates multiple sensors to realize cooling, heating, air supply and multi-sensor detection functions, forming a closed-loop control, which improves the control accuracy and stability of the air conditioning system and can adapt to the complex working environment of mining trucks. 3) Each component has a clear division of labor and strong interoperability, which facilitates fault diagnosis and maintenance and improves the reliability and maintainability of the system.

[0049] Finally, it should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes based on the technical solution and concept of the present utility model shall fall within the protection scope of the present utility model.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A CAN control system for an integrated heating and cooling air conditioner in a mining truck, characterized in that, The system includes an air conditioning controller (6), which is connected to a vehicle controller (1) and an electric compressor drive module (7) via a CAN bus. The vehicle controller (1) is connected to a display (2). The electric compressor drive module (7) is electrically connected to an electric compressor (8). The air conditioning controller (6) is electrically connected to a high-pressure sensor and a low-pressure sensor. The air conditioning controller (6) is also connected to a blower (4) via a FET (5). The vehicle controller (1) is electrically connected to a PTC heater (12). The air conditioning controller (6) is electrically connected to a temperature sensor group.

2. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The temperature sensor group includes an evaporator temperature sensor (9), a supply air temperature sensor (10), and an outlet air temperature sensor (11), which are electrically connected to the air conditioning controller (6).

3. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The air conditioning controller (6) communicates bidirectionally with the vehicle controller (1) via the first CAN line, and communicates bidirectionally with the electric compressor drive module (7) via the second CAN line.

4. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The display (2) communicates bidirectionally with the vehicle controller (1).

5. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The blower (4) is also connected to a blower relay (3).

6. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The electric compressor drive module (7) is equipped with a high-voltage input port for connecting to the vehicle's high-voltage power supply.

7. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The air conditioner controller (6) is also connected to an indoor light control circuit.

8. The CAN control system for integrated heating and cooling air conditioning in mining trucks according to claim 1, characterized in that, The FET (5) is a field-effect transistor.

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