Vehicle air conditioning system and vehicle thereof

Abstract

This application relates to a vehicle air conditioning system and the same, comprising: an air conditioning unit, a sensor group, and a host computer. The air conditioning unit includes multiple refrigeration systems connected in parallel. The sensor group includes multiple sensors; some sensors are located inside an insulated compartment and are used to collect temperature and humidity data from the compartment; other sensors are connected to the air conditioning unit and are used to collect internal temperature, humidity, current, and voltage data from the air conditioning unit. The host computer is connected to the sensor group. The host computer controls the start / stop and temperature adjustment of the air conditioning unit based on the temperature and humidity data from the insulated compartment. The host computer also determines the health status of the air conditioning system based on the internal temperature, humidity, current, and voltage data from the air conditioning unit and provides feedback on health management information. This invention automatically adjusts and controls the system based on the feedback of internal temperature, humidity, current, and voltage data from the air conditioning unit, and determines its own operating status to facilitate health management.

Description

Technical Field

[0001] This application relates to the field of vehicle air conditioning, and in particular to a vehicle air conditioning system and the automobile thereof. Background Technology

[0002] With the development of informatization and intelligentization, special vehicles are increasingly demanding air conditioning systems for their various independent compartments, such as insulated compartments and equipment compartments. Because the special equipment inside these compartments requires high ambient temperatures, and special vehicles operate in harsh environments (generally -40℃ to 55℃), air conditioning systems are essential to ensure the reliable operation of this equipment in low-temperature, high-temperature, or high-humidity environments. However, current air conditioning systems cannot provide timely feedback on various information to effectively manage their operational status. Summary of the Invention

[0003] This application provides a vehicle air conditioning system and the vehicle thereof, which can solve the problem that current air conditioning systems in related technologies cannot provide timely feedback on various information in order to manage the health of the air conditioning operation status.

[0004] In a first aspect, embodiments of this application provide a vehicle air conditioning system, comprising: an air conditioning unit, a sensor group, and a host computer. The air conditioning unit includes multiple refrigeration systems connected in parallel. The sensor group includes multiple sensors, some of which are located inside an insulated compartment and used to collect temperature and humidity data of the compartment, while others are connected to the air conditioning unit and used to collect internal temperature, humidity, current, and voltage data of the air conditioning unit. The host computer is connected to the sensor group. The host computer controls the start / stop and temperature adjustment of the air conditioning unit based on the temperature and humidity data from the insulated compartment. The host computer also determines the health status of the air conditioning system based on the internal temperature, humidity, current, and voltage data of the air conditioning unit and provides feedback on health management information.

[0005] In conjunction with the first aspect, in one embodiment, the refrigeration system integrates a compressor, a condenser, a condensing fan, an evaporator, an evaporating fan, an expansion valve, and a PTC heater.

[0006] In conjunction with the first aspect, in one embodiment, the sensor group is also used to collect compressor speed data, fan speed data, and internal pressure data of the refrigeration system;

[0007] The internal temperature data of the air conditioning unit includes condenser inlet air temperature data, compressor exhaust air temperature data, air conditioning unit outlet air temperature data, and air conditioning unit return air temperature data.

[0008] The humidity data inside the air conditioning unit includes the humidity data of the air outlet of the air conditioning unit and the humidity data of the return air of the air conditioning unit.

[0009] The internal current data of the air conditioning unit includes the total operating current data of the air conditioning unit, the compressor current data, and the PTC heater operating current data.

[0010] The internal voltage data of the air conditioning unit includes the input voltage data of the air conditioning unit.

[0011] In conjunction with the first aspect, in one implementation, the host computer determines the health status of the compressor in the air conditioning system based on compressor speed data, compressor current data, and compressor discharge temperature data. When the compressor speed data is lower than the speed setting value and the compressor current data is greater than the current setting value, the host computer determines that the compressor is abnormal. When the compressor discharge temperature data is greater than the temperature setting value, the host computer determines that the compressor is overheating.

[0012] The host computer determines the health status of the fan based on the total operating current data of the air conditioning unit and the operating current data of the PTC heater.

[0013] The host computer determines the health status of the condenser based on the condenser inlet air temperature data.

[0014] The host computer determines the health status of the air conditioning system based on the input voltage data and total operating current data of the air conditioning unit.

[0015] The host computer determines the health status of the air conditioning unit's cooling or heating capacity based on the air conditioning unit's outlet air humidity data, air conditioning unit return air humidity data, air conditioning unit outlet air temperature data, and air conditioning unit return air temperature data.

[0016] The host computer determines the health status of the refrigeration system based on the internal pressure data of the refrigeration system, the condenser inlet air temperature data, the air conditioner outlet air humidity data, the air conditioner return air humidity data, the air conditioner outlet air temperature data, and the air conditioner return air temperature data.

[0017] The host computer determines the service life of the air conditioning system based on the cumulative working time of the air conditioning unit.

[0018] The host computer determines the health status of the PTC heater based on the PTC heater's on-state status and PTC heater's operating current data.

[0019] In conjunction with the first aspect, in one embodiment, a fuse is connected in series with the PTC heater.

[0020] In conjunction with the first aspect, in one embodiment, the air vent of the air conditioning unit is provided with an air duct, which is used to communicate with the interior of the insulated chamber.

[0021] In conjunction with the first aspect, in one embodiment, the air duct includes an air outlet duct and a return air duct, the air outlet duct being disposed at the air outlet of the air conditioning unit, and the return air duct being disposed at the return air outlet of the air conditioning unit.

[0022] In conjunction with the first aspect, in one embodiment, a duct fan is provided inside the air outlet duct.

[0023] In conjunction with the first aspect, in one embodiment, the air outlet duct includes a flexible air supply hose and a rigid air supply pipe. One end of the flexible air supply hose is connected to an air conditioning unit, and the other end is connected to the rigid air supply pipe. The air duct fan is disposed inside the rigid air supply pipe, and one end of the rigid air supply pipe is used to connect to the insulation chamber.

[0024] Secondly, embodiments of this application provide an automobile, which includes: a vehicle air conditioning system as described above.

[0025] The beneficial effects of the technical solutions provided in this application include:

[0026] This application provides a vehicle air conditioning system and the vehicle thereof. By setting a sensor group on the air conditioning unit, it can comprehensively detect the internal temperature data, humidity data, current data and voltage data of the air conditioning unit. Based on the feedback of the internal temperature data, humidity data, current data and voltage data of the air conditioning unit, it can automatically adjust and control; at the same time, it can judge its own working status based on its own status information in order to facilitate health management. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the air conditioning system structure provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of an air conditioning device provided in an embodiment of this application.

[0030] In the diagram: 1. Host computer; 2. Air conditioning unit; 3. Air outlet duct; 30. Air supply hose; 31. Air supply rigid pipe; 4. Return air duct; 5. Insulated chamber; 6. Temperature and humidity sensor. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0032] This application provides a vehicle air conditioning system and the vehicle thereof, which can solve the problem in the related art that current air conditioning systems cannot provide timely feedback of various information in order to manage the health of the air conditioning operation status.

[0033] See Figures 1 to 2 This application provides a vehicle air conditioning system, comprising: an air conditioning unit 2, a sensor group, and a host computer 1. The air conditioning unit 2 includes multiple refrigeration systems connected in parallel. The sensor group includes multiple sensors, some of which are located inside an insulated compartment 5 and are used to collect temperature and humidity data of the insulated compartment 5. Other sensors are connected to the air conditioning unit 2 and are used to collect internal temperature, humidity, current, and voltage data of the air conditioning unit 2. The host computer 1 is connected to the sensor group. The host computer 1 controls the start / stop and temperature adjustment of the air conditioning unit 2 based on the temperature and humidity data of the insulated compartment 5. The host computer 1 also determines the health status of the air conditioning system based on the internal temperature, humidity, current, and voltage data of the air conditioning unit 2 and provides feedback on health management information.

[0034] In this application, by setting a sensor group on the air conditioning unit 2, it is possible to comprehensively detect the internal temperature data, humidity data, current data and voltage data of the air conditioning unit 2, and to perform automatic adjustment and control based on the feedback of the internal temperature data, humidity data, current data and voltage data of the air conditioning unit 2; at the same time, it can judge its own working status based on its own status information in order to carry out health management.

[0035] In this application, multiple refrigeration systems are configured to operate in parallel. Each refrigeration system integrates a compressor, condenser, condenser fan, evaporator, evaporator fan, expansion valve, PTC heater, and other electrical components. The purpose of configuring multiple refrigeration systems in parallel is to ensure that if any one refrigeration system or any component in any one refrigeration system fails, the other refrigeration systems can continue to operate normally. It should be noted that each refrigeration system contains multiple PTC heaters, and these multiple PTC heaters operate in parallel, so the failure of any one PTC heater does not affect the normal operation of the other PTC heaters.

[0036] Furthermore, a fuse is connected in series with the PTC heater, which can automatically disconnect the faulty circuit when one or more PTC heaters fail due to short circuit, overheating, or breakdown, ensuring the normal operation of other fault-free PTC heaters.

[0037] Based on the above embodiments, in this embodiment, the air vent of the air conditioning device 2 is provided with an air duct, which is used to communicate with the interior of the insulated chamber 5.

[0038] The air duct includes an air outlet duct 3 and a return air duct 4. The air outlet duct 3 is located at the air outlet of the air conditioning unit 2, and the return air duct 4 is located at the air return outlet of the air conditioning unit 2. A duct fan is installed in the air outlet duct 3. When the air outlet duct 3 is too long or the air conditioning pressure is too high, the duct fan can reduce the air pressure in the air outlet duct 3 and increase the air volume.

[0039] Furthermore, the air outlet duct 3 includes a flexible air supply hose and a rigid air supply pipe. One end of the flexible air supply hose is connected to the air conditioning unit 2, and the other end is connected to the rigid air supply pipe. The air duct fan is installed inside the rigid air supply pipe, and one end of the rigid air supply pipe is used to connect to the insulation chamber 5.

[0040] Therefore, in this embodiment, see Figure 2 As shown, the air conditioning unit 2 is an integrated unit, connected to the insulated compartment 5 via air ducts and connecting flanges. The air conditioning unit 2 is installed in the equipment compartment of the special vehicle. The external circulation air enters through the grid on the inner side wall of the compartment, passes through the condenser, carries away the heat from the condenser, and is then discharged outward through the grid on the door. The internal circulation air is connected to the tail of the launch tube section through the return air duct 4, which draws the air in the compartment into the evaporator or PTC heater in the air conditioning unit 2 for cooling or heating, and then sends it into the insulated compartment 5 through the air outlet duct 3 to form a circulation.

[0041] The longer air outlet duct 3 uses a rigid duct to reduce air resistance. It connects to the air inlet of the insulated compartment 5 from the air outlet of the air conditioning unit 2 along the equipment compartment towards the front of the vehicle. A duct fan is installed inside the rigid air supply duct to power the airflow from the air conditioning unit 2. Since the return air duct 4 is shorter, a flexible duct is used for easy installation and connection. The return air duct 4 is installed as follows: it connects to the return air inlet of the air conditioning unit 2 along the equipment compartment. Furthermore, insulation layers are designed on the air outlet duct 3 and the return air duct 4 to prevent loss of cooling or heating capacity. The insulation layer can be made of materials such as polyurethane, rock wool, or fiberglass.

[0042] Based on the above embodiments, in this embodiment, the sensor installed in the heat preservation chamber 5 is a temperature and humidity sensor 6, with multiple sensors arranged in various positions within the heat preservation chamber 5. The weighted average of multiple temperature and humidity sensors 6 is used as the control quantity as the basis for temperature and humidity control and start / stop of the air conditioning device 2. The weighted value of each sensor can be set according to the importance of temperature and humidity adjustment at each position.

[0043] The air conditioning system controls the temperature inside the insulation chamber 5 and the launch tube by controlling the cooling and heating equipment within the air conditioning unit 2. It collects and processes information from various temperature and humidity sensors 6 in real time to determine whether to start or stop the corresponding cooling or heating equipment, thus maintaining the temperature inside the insulation chamber 5 and the launch tube within a specified range. The air conditioning system's duct fan is installed at the interface between the air outlet duct 3 and the insulation chamber 5, providing airflow power to the air conditioning unit. The air conditioning system operates using a combination of local and remote control, communicating with the host computer 1 via a CAN bus. Local control is integrated into the air conditioning unit, while remote control is achieved through the host computer 1.

[0044] Furthermore, the sensor group is also used to collect compressor speed data, fan speed data, and internal pressure data of the refrigeration system. During the operation of the air conditioning unit 2, it collects target space environmental information and its own status information. Based on its own status and feedback from ambient temperature and humidity, it automatically adapts to the required cooling and heating capacity by adjusting the compressor speed, fan speed, and the number of PTC heaters activated. In addition, the host computer 1 is also used to collect the current operating time of the air conditioning system, the cumulative operating time of the air conditioning system, and the activation status of each PTC heater. This allows the air conditioning system to perform health management and fault diagnosis based on its own status information. Simultaneously, the air conditioning unit 2 can communicate with the host computer 1 via CAN, uploading various information, health management information, and fault information of the air conditioning system to the host computer 1, facilitating unified management of all systems within the vehicle.

[0045] The internal temperature data of the air conditioning unit 2 includes condenser inlet air temperature data, compressor exhaust temperature data, air conditioning unit 2 outlet air temperature data, and air conditioning unit 2 return air temperature data; the internal humidity data of the air conditioning unit 2 includes air conditioning unit 2 outlet humidity data and air conditioning unit 2 return air humidity data; the internal current data of the air conditioning unit 2 includes air conditioning unit 2 total operating current data, compressor current data, and PTC heater operating current data; the internal voltage data of the air conditioning unit 2 includes air conditioning unit 2 input voltage data.

[0046] Therefore, the host computer 1 judges the health status of the compressor in the air conditioning system based on the compressor speed data, compressor current data, and compressor discharge temperature data. When the compressor speed data is lower than the speed setting value and the compressor current data is greater than the current setting value, the host computer 1 judges that the compressor is abnormal. When the compressor discharge temperature data is greater than the temperature setting value, the host computer 1 judges that the compressor is overheating and needs to stop the compressor from running. After the temperature recovers, it will be restarted. At this time, multiple refrigeration systems in the air conditioning system run alternately to prevent the system from being unable to start for a long time after the overheat protection shutdown.

[0047] The host computer 1 determines the health status of the fan based on the total operating current data of the air conditioning unit 2 and the operating current data of the PTC heater: the fan current can be obtained by subtracting the PTC heater operating current data from the total operating current data of the air conditioning unit 2, and then the fan speed information can be used to determine whether the fan is working normally. The fan here is either an evaporator fan or a condenser fan.

[0048] The host computer 1 judges the health status of the condenser based on the condenser inlet air temperature data: if the condenser inlet air temperature is significantly higher than the outside ambient temperature, it may be that the hot air from the vehicle's generator is being drawn into the condenser. In this case, measures such as adding baffles or air guide devices should be taken to isolate the outside hot air. This can also be used as a factor to judge that the air conditioning system pressure is too high.

[0049] The host computer 1 determines the health status of the air conditioning system input based on the input voltage data and total operating current data of the air conditioning device 2: the host computer 1 can determine whether the air conditioning system input is normal and whether it is operating beyond its power consumption based on the input voltage data and total operating current data of the air conditioning device 2.

[0050] The host computer 1 determines the health status of the cooling or heating capacity of the air conditioning unit 2 based on the air outlet humidity data, air return humidity data, air outlet temperature data, and air return temperature data of the air conditioning unit 2. It can determine whether the cooling or heating capacity of the air conditioning system meets the requirements based on the air outlet humidity data, air return humidity data, air outlet temperature data, and air return temperature data of the air conditioning unit 2.

[0051] The host computer 1 determines the health status of the refrigeration system based on the internal pressure data, condenser inlet air temperature data, air outlet humidity data, air return humidity data, air outlet temperature data, and air return temperature data of the air conditioning unit 2. It also determines whether there is too much or too little refrigerant. If the system pressure is too high and the condenser inlet air temperature is the same as the ambient temperature, it is preliminarily determined that too much refrigerant has been added, and some refrigerant needs to be released. If the air conditioning system pressure is too low and the temperature and humidity difference between the outlet and return air is small, it is preliminarily determined that refrigerant is insufficient, and refrigerant needs to be added.

[0052] The host computer 1 determines the service life of the air conditioning system based on the cumulative working time of the air conditioning unit 2, thereby providing a basis for the maintenance of the air conditioning system.

[0053] The host computer 1 determines the health status of the PTC heaters based on their on-state status and operating current data. It can determine whether each PTC heater is functioning properly based on the on-state status and operating current data.

[0054] Therefore, by collecting various information about the air conditioning system's operation through sensors such as temperature, humidity, and pressure located at various points within the system, the system comprehensively assesses the collected information to determine whether any components are malfunctioning or abnormal. Abnormal data is then displayed on the controller screen and uploaded to the host computer. Technicians can directly troubleshoot the air conditioning system based on the displayed information, quickly resolving issues. Furthermore, technicians can update and improve the air conditioning system's health management and troubleshooting processes based on past experience, continuously iterating to make these processes more comprehensive and intelligent.

[0055] Secondly, embodiments of this application provide an automobile that includes the vehicle air conditioning system provided in any of the above embodiments of this application.

[0056] In this application, by setting a sensor group on the air conditioning unit 2, it is possible to comprehensively detect the internal temperature data, humidity data, current data and voltage data of the air conditioning unit 2, and to perform automatic adjustment and control based on the feedback of the internal temperature data, humidity data, current data and voltage data of the air conditioning unit 2; at the same time, it can judge its own working status based on its own status information in order to carry out health management.

[0057] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0058] 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.

[0059] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A vehicle air conditioning system, characterized in that, It includes: Air conditioning unit (2), wherein the air conditioning unit (2) includes multiple refrigeration systems connected in parallel; The sensor group includes multiple sensors. Some of the sensors are set inside the heat preservation chamber (5) and are used to collect temperature and humidity data of the heat preservation chamber (5). Other sensors are connected to the air conditioning unit (2) and are used to collect temperature, humidity, current and voltage data inside the air conditioning unit (2). The host computer (1) is connected to the sensor group. The host computer (1) controls the start and stop of the air conditioning device (2) and temperature adjustment through the temperature and humidity data of the heat preservation chamber (5). The host computer (1) judges the health status of the air conditioning system through the internal temperature data, humidity data, current data and voltage data of the air conditioning device (2) and feeds back health management information. The refrigeration system integrates a compressor, condenser, condenser fan, evaporator, evaporator fan, expansion valve, and PTC heater. The sensor group is also used to collect compressor speed data, wind speed data, and internal pressure data of the refrigeration system. The internal temperature data of the air conditioning unit (2) includes condenser inlet air temperature data, compressor exhaust air temperature data, air conditioning unit (2) outlet air temperature data, and air conditioning unit (2) return air temperature data. The humidity data inside the air conditioning unit (2) includes the humidity data of the air outlet of the air conditioning unit (2) and the humidity data of the return air of the air conditioning unit (2); The internal current data of the air conditioning unit (2) includes the total operating current data of the air conditioning unit (2), the compressor current data, and the PTC heater operating current data; The internal voltage data of the air conditioning unit (2) includes the input voltage data of the air conditioning unit (2); The host computer (1) judges the health status of the compressor in the air conditioning system based on the compressor speed data, compressor current data, and compressor exhaust temperature data. When the compressor speed data is lower than the speed setting value and the compressor current data is greater than the current setting value, the host computer (1) judges that the compressor is abnormal. When the compressor exhaust temperature data is greater than the temperature setting value, the host computer (1) judges that the compressor is overheated. The host computer (1) judges the health status of the fan based on the total operating current data of the air conditioning unit (2) and the operating current data of the PTC heater; The host computer (1) judges the health status of the condenser based on the condenser inlet air temperature data; The host computer (1) judges the health status of the air conditioning system input based on the input voltage data of the air conditioning device (2) and the total operating current data of the air conditioning device (2); The host computer (1) judges the health status of the cooling capacity or heating capacity of the air conditioning device (2) based on the air humidity data of the air outlet, the air humidity data of the air return, the air temperature data of the air outlet, and the air temperature data of the air return. The host computer (1) judges the health status of the refrigeration system based on the internal pressure data of the refrigeration system, the inlet air temperature data of the condenser, the outlet air humidity data of the air conditioning unit (2), the return air humidity data of the air conditioning unit (2), the outlet air temperature data of the air conditioning unit (2), and the return air temperature data of the air conditioning unit (2). The host computer (1) determines the service life of the air conditioning system based on the cumulative working time of the air conditioning unit (2); The host computer (1) determines the health status of the PTC heater based on the PTC heater's on-state status and the PTC heater's operating current data.

2. The vehicle air conditioning system as described in claim 1, characterized in that: A fuse is connected in series with the PTC heater.

3. The vehicle air conditioning system as described in claim 1, characterized in that: The air conditioning unit (2) has an air duct at its air outlet, which is used to communicate with the interior of the insulated cabin (5).

4. The vehicle air conditioning system as described in claim 3, characterized in that: The air duct includes an air outlet duct (3) and a return air duct (4). The air outlet duct (3) is located at the air outlet of the air conditioning unit (2), and the return air duct (4) is located at the return air outlet of the air conditioning unit (2).

5. The vehicle air conditioning system as described in claim 4, characterized in that: An air duct fan is installed inside the air outlet duct (3).

6. The vehicle air conditioning system as described in claim 5, characterized in that: The air outlet duct (3) includes a flexible air supply hose (30) and a rigid air supply pipe (31). One end of the flexible air supply hose (30) is connected to the air conditioning unit (2), and the other end is connected to the rigid air supply pipe (31). The air duct fan is installed inside the rigid air supply pipe (31), and one end of the rigid air supply pipe (31) is used to connect to the heat preservation chamber (5).

7. A car, characterized in that, It includes: The vehicle air conditioning system as described in any one of claims 1-6.

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