Air conditioning system testing device
By designing an air conditioning system testing device and using a controller to simulate the vehicle's operating environment, efficient functional testing of the two-in-one electric compressor was achieved. This solved the problems of long testing time and high cost in existing technologies, improving testing efficiency and reducing costs.
Patent Information
- Application Number
- CN202520209294.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-10
AI Technical Summary
In the existing technology, the testing of the two-in-one electric compressor of the automotive air conditioning system is mainly carried out on the whole vehicle, which results in long testing time, high cost and low efficiency.
Design an air conditioning system testing device, including an electric compressor, a PTC heater, a condenser, an expansion valve, an evaporator, and a host computer. The device uses a controller to perform functional tests on the two-in-one electric compressor, simulating the operating environment of a complete vehicle, thereby reducing the verification cycle and cost.
This enables efficient functional testing of the two-in-one electric compressor, reducing verification cycle and cost, and improving testing efficiency.
Smart Images
Figure CN223756345U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of air conditioning system testing, in particular to an air conditioning system testing device. BACKGROUND
[0002] With the development of integration of automobile air conditioning systems, two-in-one electric compressors with PTC heater control have been widely applied. Currently, the testing of two-in-one electric compressors by automobile air conditioning systems is mainly completed on a whole vehicle, and thus a large number of road tests are required to verify the system. However, the road test takes a long time, resulting in low testing efficiency and high testing cost. CONTENT OF THE UTILITY MODEL
[0003] The present application provides an air conditioning system testing device, which can perform function test verification on a two-in-one electric compressor with PTC heater control, and can greatly reduce the verification period and cost and improve the verification efficiency relative to whole vehicle road test verification.
[0004] In order to achieve the above purpose, the main technical scheme adopted by the present application comprises:
[0005] In a first aspect, the present application provides an air conditioning system testing device, comprising: an electric compressor, a PTC heater, a condenser, an expansion valve, an evaporator, and an upper computer,
[0006] The electric compressor has a first liquid inlet and a first liquid outlet in communication, the condenser has a second liquid inlet and a second liquid outlet in communication, the evaporator has a third liquid inlet and a third liquid outlet in communication, the first liquid outlet is in communication with the second liquid inlet, the second liquid outlet is in communication with the third liquid inlet through the expansion valve, and the third liquid outlet is in communication with the first liquid inlet.
[0007] The controller is used to control the operation of the electric compressor and / or the PTC heater, and the controller is in communication connection with the upper computer.
[0008] The air conditioning system testing device according to the first aspect of the present application can perform function test verification on a two-in-one electric compressor with PTC heater control, and can greatly reduce the verification period and cost and improve the verification efficiency relative to whole vehicle road test verification.
[0009] Optionally, the air conditioning system testing device further comprises: a high-voltage power supply and a high-voltage wire harness, the high-voltage power supply is connected with the electric compressor through the high-voltage wire harness, and the electric compressor is further connected with the PTC heater through the high-voltage wire harness.
[0010] Optionally, the air conditioning system testing device further comprises: a low-voltage power supply and a low-voltage wire harness, the low-voltage power supply is connected with the controller and the upper computer through the low-voltage wire harness.
[0011] Optionally, the air conditioner system testing device further comprises an electric fan, the electric fan is adapted to blow air to the condenser, and the electric fan is connected to the low-voltage power supply through the low-voltage wire harness.
[0012] Optionally, the air conditioner system testing device further comprises a box, the expansion valve, the evaporator and the PTC heater are arranged in the box.
[0013] Optionally, the air conditioner system testing device further comprises a blower, the blower is arranged in the box, and the blower is adapted to blow air to the evaporator.
[0014] Optionally, the air conditioner system testing device further comprises a rack, the electric compressor, the electric fan, the condenser and the box are arranged on the rack.
[0015] Optionally, the air conditioner system testing device further comprises a pulley, the pulley is movably arranged on the bottom of the rack.
[0016] Optionally, the air conditioner system testing device further comprises a temperature box, the rack is selectively moved into or out of the temperature box.
[0017] Optionally, the air conditioner system testing device further comprises a connecting pipeline, the first liquid outlet is communicated with the second liquid inlet through the connecting pipeline, the second liquid outlet is communicated with the third liquid inlet through the connecting pipeline, the third liquid outlet is communicated with the first liquid inlet through the connecting pipeline, and the connecting pipeline is provided with a liquid injection opening. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0019] Figure 1 The schematic diagram of the air conditioner system testing device provided by an embodiment of the present application.
[0020]
Explanation of reference numerals
[0021] The air conditioner system testing device 100;
[0022] The electric compressor 1; the first liquid inlet 11; the first liquid outlet 12;
[0023] The PTC heater 2;
[0024] The condenser 3; the second liquid inlet 31; the second liquid outlet 32;
[0025] The expansion valve 4;
[0026] The evaporator 5; the third liquid inlet 51; the third liquid outlet 52;
[0027] Host computer 6; high-voltage power supply 7; high-voltage wiring harness 8; low-voltage power supply 9; low-voltage wiring harness 10; electrical
[0028] Sub-fan 20; connecting pipeline 30. DETAILED DESCRIPTION
[0029] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0030] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application or the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.
[0031] In the present application, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.
[0032] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "attach" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.
[0034] In the present application, "a plurality of" refers to more than two (including two), and similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).
[0035] It should be noted that, with the development of the integration of the automobile air conditioning system, the two-in-one electric compressor controlled by the PTC heater has been widely used. At present, the test of the two-in-one electric compressor of the automobile air conditioning system is mainly completed on the whole vehicle, so a large number of road tests are needed to verify the system. However, the road test takes a long time, which leads to low test efficiency and high test cost.
[0036] Based on this, the present application proposes an air conditioning system testing device 100, which can perform function test verification on the two-in-one electric compressor 1 controlled by the PTC heater 2, and can greatly reduce the verification period and cost and improve the verification efficiency compared with the whole vehicle road test verification.
[0037] The air conditioning system testing device 100 proposed by the embodiment of the present application is described below with reference to the accompanying drawings.
[0038] As shown in Figure 1 , the air conditioning system testing device 100 according to the first aspect of the present application comprises an electric compressor 1, a PTC heater 2, a condenser 3, an expansion valve 4, an evaporator 5 and an upper computer 6. The electric compressor 1 has a first liquid inlet 11 and a first liquid outlet 12 in communication. The condenser 3 has a second liquid inlet 31 and a second liquid outlet 32 in communication. The evaporator 5 has a third liquid inlet 51 and a third liquid outlet 52 in communication. The first liquid outlet 12 is in communication with the second liquid inlet 31. The second liquid outlet 32 is in communication with the third liquid inlet 51 through the expansion valve 4. The third liquid outlet 52 is in communication with the first liquid inlet 11. The controller in the electric compressor 1 is used to control the operation of the electric compressor 1 and / or the PTC heater 2, and the controller is in communication connection with the upper computer 6.
[0039] Specifically, as shown in Figure 1 , the first liquid outlet 12 of the electric compressor 1 is in communication with the second liquid inlet 31 of the condenser 3. The second liquid outlet 32 of the condenser 3 is in communication with the third liquid inlet 51 of the evaporator 5 through the expansion valve 4. The third liquid outlet 52 of the evaporator 5 is in communication with the first liquid inlet 11 of the electric compressor 1. In this way, when the electric compressor 1 compresses the refrigerant, the refrigerant can circulate and flow between the electric compressor 1, the condenser 3, the expansion valve 4 and the evaporator 5, thereby realizing the simulation operation of the real vehicle air conditioning system.
[0040] Further, the controller in the electric compressor 1 has a two-in-one control function, which can be used to control the electric compressor 1 to run alone, control the PTC heater 2 to run alone, or control the electric compressor 1 and the PTC heater 2 to run simultaneously, and the controller is in communication connection with the upper computer 6, and test cases are issued to the controller by the upper computer 6, so that various function tests can be performed on the two-in-one electric compressor 1 in the air conditioning system, for example, the start strategy, the running strategy, the stop strategy, the power accuracy, and the communication matrix of the electric compressor 1 and the PTC heater 2 can be tested.
[0041] Further, as a first specific example, when the start strategy of the electric compressor 1 and the PTC heater 2 is functionally tested, the controller is issued with PTC heater 2 and electric compressor 1 start test instructions under different simulated load states by the upper computer 6, so as to control the PTC heater 2 and the electric compressor 1 to perform start test, and record the start sequence, for example, whether the PTC heater 2 is preheated first, and then the electric compressor 1 is started, and record the current and voltage changes in the start process of the electric compressor 1 and the PTC heater 2, so as to determine whether there is a problem of too large start impact, and at the same time, it can also be checked whether the controller can accurately identify the running state of the electric compressor 1 and the PTC heater 2 under various start conditions, and run according to the preset start strategy.
[0042] As a second specific example, when the running strategy of the electric compressor 1 and the PTC heater 2 is functionally tested, the controller is issued with PTC heater 2 and electric compressor 1 running test instructions under different simulated working conditions by the upper computer 6, for example, the working requirements of the PTC heater 2 and the electric compressor 1 under vehicle acceleration, deceleration, and uniform speed driving conditions can be simulated, various sensors are used to collect various parameters of the controller in the running process in real time, including the heating power of the PTC heater 2, the speed and refrigerating capacity of the electric compressor 1, and the temperature and pressure of the air conditioning system, etc., by analyzing these parameters, it is determined whether the controller can reasonably adjust the working state of the PTC heater 2 and the electric compressor 1 according to different working conditions and requirements, so as to realize efficient and stable running, for example, whether the controller can timely increase the refrigerating power of the electric compressor 1 and reasonably control the working of the PTC heater 2 to avoid energy waste when the vehicle runs at high speed in a high temperature environment.
[0043] As a third specific example, when the stop strategy of the electric compressor 1 and the PTC heater 2 is functionally tested, the upper computer 6 issues a stop operation test instruction to the controller, and checks whether the controller operates according to the preset stop strategy, for example, stops the operation of the PTC heater 2 and the electric compressor 1 first, and then cuts off the related power supply. At the same time, the change curves of the current, voltage, and rotating speed of the electric compressor 1 during the stop process can be recorded to evaluate the stability and safety of the stop process. For example, whether the electric compressor 1 reverses during the stop process due to inertia, and whether the PTC heater 2 can quickly dissipate heat after stopping to avoid overheating damage, etc.
[0044] As a fourth specific example, when the power accuracy of the electric compressor 1 and the PTC heater 2 is functionally tested, a power analyzer can be connected to the power supply circuit of the PTC heater 2 and the electric compressor 1, and the upper computer 6 issues a stop power accuracy test instruction to the controller to measure the actual output power under different working modes and power set values. For example, the controller is set to make the PTC heater 2 work at 50%, 75%, and 100% of the rated power, respectively, and the actual power values measured by the power analyzer are recorded and compared with the set power values to calculate the power error. Similarly, the power measurement and error calculation of the electric compressor 1 under different rotating speed settings are performed to evaluate whether the power output accuracy of the controller meets the design requirements according to the measurement results.
[0045] As a fifth specific example, when the communication matrix of the electric compressor 1 and the PTC heater 2 is functionally tested, the upper computer 6 issues a test instruction to the controller, and checks whether the test instruction sent by the controller can be accurately received and analyzed by the electric compressor 1 and the PTC heater 2, for example, when the upper computer 6 sends a temperature adjustment instruction to the controller, it checks whether the controller can accurately receive the instruction and adjust the working state of the PTC heater 2 and the electric compressor 1 according to the instruction.
[0046] In summary, the air conditioning system test device 100 according to the first aspect of the present application can test and verify various functions of the two-in-one electric compressor 1 with PTC heater 2 control, and can greatly reduce the verification period and cost and improve the verification efficiency compared with the whole vehicle road test verification.
[0047] In some embodiments of the present application, the electric compressor 1 in the air conditioning system test device 100 can be replaced according to the test needs to realize the function test of different types of electric compressors 1, meet the function test needs of different types of electric compressors 1 of different projects, and at the same time, the air conditioning system test device 100 in the present application can also consider the function test of traditional electric compressors 1.
[0048] In some embodiments of the present application, as shown in Figure 1 Further comprising: a high-voltage power supply 7 and a high-voltage harness 8, the high-voltage power supply 7 is connected with the electric compressor 1 through the high-voltage harness 8, and the electric compressor 1 is also connected with the PTC heater 2 through the high-voltage harness 8.
[0049] Specifically, the high-voltage power supply 7, the electric compressor 1 and the PTC heater 2 are connected in series through the high-voltage harness 8, and the high-voltage power supply 7 is used to drive the operation of the electric compressor 1 and the PTC heater 2, for example, the high-voltage power supply 7 provides three-phase alternating current to drive the three-phase alternating current motor in the electric compressor 1 to work, and the PTC heater 2 utilizes the resistance-temperature characteristic of PTC material, when the current of the high-voltage power supply 7 passes through the PTC material, heat is generated inside the material, and the temperature rises accordingly.
[0050] Further, the air conditioning system test device 100 in the present application can also realize the functional test of the high-voltage working voltage range and the high-voltage over-voltage and under-voltage fault of the electric compressor 1.
[0051] As a sixth specific example, when the functional test of the high-voltage working voltage range of the electric compressor 1 is performed, the high-voltage working voltage range test instruction is issued to the controller of the electric compressor 1 through the upper computer 6, so that the controller gradually increases the output voltage of the high-voltage power supply 7, which starts from below the lower limit of the rated high-voltage working voltage of the controller, and slowly increases with a certain voltage increment (such as 10V), while observing the working state of the controller and recording the minimum voltage value at which the controller can work normally, that is, the lower limit of the high-voltage working voltage, and continuing to increase the voltage to above the upper limit of the rated high-voltage working voltage, observing when the controller appears abnormal, such as functional failure, component damage, etc., recording the voltage value at this time, and determining the upper limit of the high-voltage working voltage. It should be noted that during this process, the PTC heater 2 and the electric compressor 1 should be in a normal working load state to simulate the actual working condition.
[0052] As a seventh specific example, when the functional test of the high-voltage over-voltage and under-voltage fault of the electric compressor 1 is performed, the high-voltage over-voltage and under-voltage fault test instruction is issued to the controller of the electric compressor 1 through the upper computer 6, the output voltage of the high-voltage power supply 7 is first set to a certain fixed value within the normal working range to ensure the normal operation of the controller and related equipment, and then the voltage is quickly increased to above the high-voltage over-voltage protection threshold, to observe whether the controller can immediately trigger the over-voltage protection mechanism, such as cutting off the output of the high-voltage power supply 7, issuing a fault alarm signal, etc. Similarly, the voltage is quickly reduced to below the high-voltage under-voltage protection threshold, to check whether the controller can timely execute the under-voltage protection action, such as stopping the PTC heater 2 and the electric compressor 1 from working, and record the fault information.
[0053] In this way, the air conditioning system testing device 100 can supply high voltage power to the electric compressor 1 and the PTC heater 2, and further enriches the function test of the two-in-one electric compressor 1.
[0054] In some embodiments of the present application, as shown in Figure 1 The low-voltage power supply 9 is connected to the controller and the upper computer 6 through the low-voltage wire harness 10.
[0055] Specifically, the low-voltage power supply 9 is used to provide low-voltage power, such as 12V low-voltage power, for the upper computer 6 and the controller in the electric compressor 1. The air conditioning system testing device 100 in the present application can also realize the function test of the low-voltage working voltage range and the low-voltage over / under voltage fault of the electric compressor 1.
[0056] As an eighth specific example, when the function test of the low-voltage working voltage range of the electric compressor 1 is performed, the controller of the electric compressor 1 is instructed by the upper computer 6 to start the low-voltage working voltage range test, so that the controller starts to gradually increase the output voltage of the low-voltage power supply 9 from below the lower limit of the rated low-voltage working voltage of the controller, and the lowest voltage value at which the controller starts to work normally is observed to determine the lower limit of the low-voltage working voltage. Then, the voltage continues to rise until it exceeds the upper limit of the rated low-voltage working voltage, and the voltage value at which the controller appears abnormal, i.e. the upper limit of the low-voltage working voltage, is observed. It should be noted that during this process, the PTC heater 2 and the electric compressor 1 are required to be in a normal working load state to simulate the actual working condition.
[0057] As a ninth specific example, when the function test of the low-voltage over / under voltage fault of the electric compressor 1 is performed, the controller of the electric compressor 1 is instructed by the upper computer 6 to start the low-voltage over / under voltage fault test, so that the output voltage of the low-voltage power supply 9 is first set within the normal working range to make the controller run normally. Then, the voltage is quickly raised to exceed the low-voltage overvoltage protection threshold, and it is checked whether the controller can timely detect the overvoltage fault and take corresponding measures, such as cutting off part of the low-voltage circuit, issuing an overvoltage fault prompt, etc. Similarly, the voltage is quickly lowered to below the low-voltage under-voltage protection threshold, and it is observed whether the controller immediately performs the under-voltage protection action, such as stopping the non-critical low-voltage load from working, saving the current working state, etc.
[0058] In this way, the air conditioning system testing device 100 can supply low-voltage power to the controller and the upper computer 6, and further enriches the function test of the two-in-one electric compressor 1.
[0059] In some embodiments of the present application, as shown in Figure 1 The electronic fan 20 is adapted to blow air on the condenser 3, and the electronic fan 20 is also connected to the low-voltage power supply 9 through the low-voltage wire harness 10.
[0060] Specifically, the low-voltage power supply 9 is used to supply power to the electronic fan 20 to drive the electronic fan 20 to rotate, and the electronic fan 20 is used to blow air to the condenser 3, so that the heat dissipation fan of the real vehicle can be simulated, and the air conditioning system test device 100 is closer to the real operating environment, which is beneficial to improve the accuracy of the test results.
[0061] In some embodiments of the present application, the box is further included, and the expansion valve 4, the evaporator 5 and the PTC heater 2 are arranged in the box. Specifically, the box can simulate the air conditioning box in the vehicle body, and the expansion valve 4, the evaporator 5 and the PTC heater 2 are arranged in the box to simulate the real air supply structure in the vehicle body. For example, the box can be provided with various regulating dampers and air outlets, so that the air conditioning system test device 100 is closer to the real operating environment, which is beneficial to improve the accuracy of the test results.
[0062] In some embodiments of the present application, the air blower is further included, and the air blower is arranged in the box and is adapted to blow air to the evaporator 5. That is, the air blower is arranged in the box, and the air blower blows air to the evaporator 5 to simulate the delivery of cold air or hot air to the passenger compartment, so that the air conditioning system test device 100 is closer to the real operating environment, which is beneficial to improve the accuracy of the test results.
[0063] In some embodiments of the present application, the rack is further included, and the electric compressor 1, the electronic fan 20, the condenser 3 and the box are arranged on the rack. Specifically, the rack can be designed according to the size of the electronic fan 20, the condenser 3 and the box, and the mounting tool of the electric compressor 1 is designed and manufactured according to the installation position of the electric compressor 1 in the real vehicle, so that the electric compressor 1, the electronic fan 20, the condenser 3 and the box are installed on the rack in the form of real vehicle installation, which makes the air conditioning system test device 100 closer to the real assembly form, and is beneficial to improve the accuracy of the test results.
[0064] In some embodiments of the present application, the pulley is further included, and the pulley is movably arranged at the bottom of the rack. That is, the pulley arranged at the bottom of the rack can realize the movement of the rack. It can be understood that the number of racks can be multiple, for example, a pulley can be arranged at each corner of the rack, which facilitates the overall movement of the rack.
[0065] In some embodiments of the present application, the temperature box is further included, and the rack can be selectively moved into or out of the temperature box. That is, the rack can be selectively moved into or out of the temperature box through the pulley, and the temperature box can adjust the temperature inside. When the rack is moved into the temperature box, the different environmental temperatures can be simulated by adjusting the temperature inside the temperature box, so as to meet the functional test requirements of the electric compressor 1 under different environments.
[0066] In some embodiments of the present application, as shown in Figure 1 The connecting pipeline 30 is provided with a liquid injection port. Specifically, the electric compressor 1, the condenser 3, the expansion valve 4 and the evaporator 5 are connected by the connecting pipeline 30 to form a complete refrigerant circulation flow path, wherein the connecting pipeline 30 is provided with a liquid injection port, and a refrigerant can be injected into the connecting pipeline 30 through the liquid injection port by using a charging device, so as to realize refrigerant injection of the air conditioning system.
[0067] It should be further understood that the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed, or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element defined by the phrase "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.
[0068] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.
[0069] The above only describes the embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of the claims of the present application.
[0070] Although the embodiments of the present application are described in conjunction with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present application, and such modifications and changes shall fall within the scope defined by the appended claims.
Claims
1. An air conditioning system testing apparatus characterized by comprising: It comprises: An electric compressor, a PTC heater, a condenser, an expansion valve, an evaporator and a host computer, The electric compressor has a first liquid inlet and a first liquid outlet in communication, the condenser has a second liquid inlet and a second liquid outlet in communication, the evaporator has a third liquid inlet and a third liquid outlet in communication, the first liquid outlet is in communication with the second liquid inlet, the second liquid outlet is in communication with the third liquid inlet through the expansion valve, and the third liquid outlet is in communication with the first liquid inlet; Wherein, the electric compressor has a controller inside, the controller is used to control the operation of the electric compressor and / or the PTC heater, and the controller is in communication connection with the host computer.
2. The air conditioning system testing device of claim 1, wherein, It also comprises: A high-voltage power supply and a high-voltage wire harness, the high-voltage power supply is connected with the electric compressor through the high-voltage wire harness, and the electric compressor is also connected with the PTC heater through the high-voltage wire harness.
3. The air conditioning system testing device of claim 1, wherein, It also comprises: A low-voltage power supply and a low-voltage wire harness, the low-voltage power supply is connected with the controller and the host computer through the low-voltage wire harness.
4. The air conditioner system testing device of claim 3, wherein, It also comprises: An electronic fan, the electronic fan is suitable for blowing the condenser, and the electronic fan is also connected with the low-voltage power supply through the low-voltage wire harness.
5. The air conditioning system testing device of claim 4, wherein, It also comprises: A box, the expansion valve, the evaporator and the PTC heater are all arranged in the box.
6. The air conditioner system testing device of claim 5, wherein, It also comprises: A blower, the blower is arranged in the box, and the blower is suitable for blowing the evaporator.
7. The air conditioner system testing device of claim 5, wherein, It also comprises: A rack, the electric compressor, the electronic fan, the condenser and the box are all arranged in the rack.
8. The air conditioner system testing device of claim 7, wherein, It also comprises: A pulley, the pulley is movably arranged at the bottom of the rack.
9. The air conditioner system testing device of claim 7, wherein, It also comprises: A temperature box, the rack can be selectively moved into or out of the temperature box.
10. The air conditioning system testing apparatus of any one of claims 1-9, wherein, It also comprises: A connecting pipeline, the first liquid outlet is in communication with the second liquid inlet through the connecting pipeline, the second liquid outlet is in communication with the third liquid inlet through the connecting pipeline, and the third liquid outlet is in communication with the first liquid inlet through the connecting pipeline, and the connecting pipeline is provided with a liquid injection port.