An air conditioning system dynamic performance calibration bench and a calibration method

Abstract

The application discloses a kind of calibration test bench and calibration method of air conditioning system dynamic performance, it is related to air conditioning test technical field, it includes: outdoor simulation room, it is set in for simulating the outdoor temperature control system of the external environment temperature of whole vehicle air conditioner, outdoor heat exchanger is located in outdoor simulation room;Passenger cabin simulation room;Passenger cabin simulation room is set passenger cabin temperature control system and humidifier;Passenger cabin temperature control system contains the heat load curve of setting;The air conditioner body is located in passenger cabin simulation room;Buffer simulation room, passenger cabin simulation room is located in buffer simulation room, buffer simulation room is set buffer temperature control system;Main control system, connect and control air conditioner body, outdoor temperature control system, passenger cabin temperature control system, buffer temperature control system and humidifier.The calibration test bench and calibration method of the application move the test work of air conditioning dynamic performance to air conditioning system test bench.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner testing, in particular to an air conditioner system dynamic performance calibration bench and a calibration method. BACKGROUND

[0002] In the practical application process of electric vehicles, the winter endurance problem of electric vehicles is undoubtedly one of the biggest obstacles in the electric vehicle market. Under this background, the air conditioner system that can improve the heating efficiency of the air conditioner and reduce the heating energy consumption, i.e. the heat pump air conditioner, has gradually become the mainstream technology of new energy vehicle air conditioner. The heat pump air conditioner refers to an air conditioner system that can convert heat in the environment to the passenger cabin through a compressor for heating. The system heating power is usually greater than the compressor power, thereby achieving the purpose of energy saving. The heating strategy of the heat pump air conditioner is often different in different low temperature ranges, and due to the limitation of heating capacity, more internal circulating air is often introduced to ensure the heating speed; this also means that the heat pump air conditioner pays more attention to the dynamic performance of the air conditioner.

[0003] In related technologies, during the development of the automobile air conditioner, an air conditioner bench is generally built in the early stage of development, and the static performance (such as maximum refrigeration capacity) of the air conditioner system is tested and calibrated in the enthalpy difference room (i.e. a test room built according to the principle of air enthalpy difference method to measure the refrigeration and heating capacity of the air conditioner). The dynamic performance of the air conditioner system generally needs to be tested on the whole vehicle, but the whole vehicle is delivered late, and the cost of the whole vehicle ring mode test is high, so if the dynamic performance test can be completed on the bench, it will be beneficial to the compression of the vehicle development cycle and cost. Specifically, the dynamic performance of the air conditioner system refers to the input conditions of the air conditioner in the refrigeration or heating process, such as the cabin temperature, which will be in continuous change before reaching stability. The dynamic performance is the performance from starting the air conditioner to the cabin reaching a stable state. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide an air conditioner dynamic performance calibration bench and a calibration method, which moves the air conditioner dynamic performance test work to the air conditioner system bench.

[0005] To achieve the above purpose, the technical scheme adopted is: an air conditioner system dynamic performance calibration bench, the air conditioner system to be tested includes an air conditioner body and an outdoor heat exchanger, and the calibration bench includes:

[0006] An outdoor simulation room, in which an outdoor temperature control system for simulating the external environment temperature of the whole vehicle air conditioner is arranged, and the outdoor heat exchanger is located in the outdoor simulation room;

[0007] The passenger cabin simulation room has a space volume equivalent to that of the passenger cabin of the vehicle under test; the passenger cabin simulation room is provided with a passenger cabin temperature control system and a humidifier for simulating the water vapor exhaled by passengers; the passenger cabin temperature control system comprises a set heat load curve; the set heat load curve is obtained from the air conditioning temperature rise and fall test data of the same type and level of vehicles in the past; and the air conditioner body is located in the passenger cabin simulation room.

[0008] The buffer simulation room is located in the buffer simulation room, and the buffer temperature control system is located in the passenger cabin simulation room; the passenger cabin temperature control system exchanges heat with the buffer simulation room when working;

[0009] The main control system is connected to and controls the air conditioner body, the outdoor temperature control system, the passenger cabin temperature control system, the buffer temperature control system, and the humidifier.

[0010] On the basis of the above technical scheme, the outdoor simulation room and the buffer simulation room form a day-shaped heat preservation wall structure, and the outdoor simulation room and the buffer simulation room are separated by a partition heat preservation wall.

[0011] On the basis of the above technical scheme, the calibration bench further comprises an air volume machine connected to the main control system; the air volume machine is located in the outdoor simulation room, and the air outlet of the air volume machine is aligned with the outdoor heat exchanger.

[0012] On the basis of the above technical scheme, the side wall of the passenger cabin simulation room is rectangular, comprising three passenger cabin fixed heat preservation walls and one passenger cabin movable heat preservation wall, the passenger cabin movable heat preservation wall can be sealed and moved relative to the two passenger cabin fixed heat preservation walls.

[0013] On the basis of the above technical scheme, the passenger cabin movable heat preservation wall and the passenger cabin fixed heat preservation wall are both made of double-layer sheet metal with polyester material.

[0014] The application also discloses a calibration method based on the calibration bench, comprising the following steps:

[0015] Obtain the heat load curve of the air conditioning system to be tested, and import the heat load curve into the passenger cabin temperature control system;

[0016] The main control system controls the temperature of the outdoor simulation room to reach the set low temperature through the outdoor temperature control system, and controls the temperature of the passenger cabin simulation room to also reach the set low temperature through the passenger cabin temperature control system, and controls the temperature of the buffer simulation room to reach the set appropriate temperature through the buffer temperature control system.

[0017] The main control system controls the air conditioning system to be tested to start the set heating mode, and the main control system also controls the humidifier 8 to start working according to the set dehumidification amount; the passenger cabin temperature control system obtains the temperature of the passenger cabin simulation room in real time through the thermistor arranged in the passenger cabin simulation room, and feeds back the temperature to the main control system; and the main control system draws the temperature change curve of the passenger cabin simulation room with time.

[0018] On the basis of the above technical scheme, the passenger cabin temperature control system is provided with an air volume test system, which can calculate the real-time air heat exchange power by combining the air enthalpy difference calculated by the inlet and outlet air temperature and humidity, and feed back the air heat exchange power to the main control system, and the air heat exchange power is compared with the heat load curve and automatically adjusted.

[0019] On the basis of the above technical scheme, the calibration bench further comprises an air volume machine connected to the main control system; the air volume machine is located in the outdoor simulation room, and the air outlet of the air volume machine is aligned with the outdoor heat exchanger;

[0020] The main control system controls the air conditioning system to be tested to start the set heating mode, and the main control system also controls the humidifier 8 to start working according to the set dehumidification amount; the passenger cabin temperature control system obtains the temperature of the passenger cabin simulation room in real time through the thermistor arranged in the passenger cabin simulation room, and feeds back the temperature to the main control system; and the main control system draws the temperature change curve of the passenger cabin simulation room with time.

[0021] The main control system controls the air volume machine to generate a set simulation air speed at a set vehicle speed.

[0022] On the basis of the above technical scheme, the outdoor simulation room and the buffer simulation room form a day-shaped heat preservation wall structure, and the outdoor simulation room and the buffer simulation room are separated by a partition heat preservation wall;

[0023] The side wall of the passenger cabin simulation room is rectangular, comprising three passenger cabin fixed heat preservation walls and one passenger cabin movable heat preservation wall, and the passenger cabin movable heat preservation wall can be sealed and moved relative to the two passenger cabin fixed heat preservation walls.

[0024] The passenger cabin movable heat preservation wall and the passenger cabin fixed heat preservation wall are both made of double-layer sheet metal and polyester material.

[0025] On the basis of the above technical scheme, after obtaining the temperature-time curve of the air conditioning system to be tested, the air conditioning system to be tested is installed in the whole vehicle of the vehicle under research to run, and the temperature-time curve of the air conditioning system to be tested in the whole vehicle is obtained for comparison.

[0026] The technical scheme provided in the application has the following beneficial effects:

[0027] 1.The calibration bench of the application comprises an outdoor simulation room, a passenger cabin simulation room, a buffer simulation room and a main control system, the main control system is connected to and controls the air conditioner body, the outdoor temperature control system, the passenger cabin temperature control system, the buffer temperature control system and the humidifier; the calibration bench of the application is ingeniously designed, the outdoor temperature control system of the outdoor simulation room simulates the low temperature environment outside the vehicle, the buffer temperature control system and the passenger cabin temperature control system work together to more accurately follow the set heat load curve, and the passenger cabin temperature during vehicle driving is accurately simulated; the humidifier further improves the simulation authenticity and is closer to the vehicle during driving; the calibration bench of the application can move the test of the dynamic performance of the air conditioner to the air conditioning system bench, and does not need to wait until the air conditioning system is installed on the whole vehicle before testing, so as to identify the design risk in advance, reduce the workload of repeatedly disassembling the air conditioning system, and greatly shorten the development cycle of the new vehicle.

[0028] 2.The air volume machine of the calibration bench of the application can blow the outdoor heat exchanger to simulate the situation that the natural wind blows the outdoor heat exchanger during vehicle driving, the air speed of the air volume machine is set by the main control system, and the air volume machine further improves the authenticity and accuracy of the calibration bench.

[0029] 3.The passenger cabin simulation room of the application can adjust the space size of the passenger cabin through the passenger cabin movable heat preservation wall, so that the calibration bench can cover the development of various vehicle models from micro cars to full-size SUVs / MPVs, has a wide application range and high practicability.

[0030] 4.The calibration method of the application first reaches the set appropriate temperature through the buffer temperature control system of the buffer simulation room, then exchanges heat with the buffer simulation room through the passenger cabin temperature control system of the passenger cabin simulation room, can more accurately follow the set heat load curve, accurately simulates the environment temperature of the passenger cabin during vehicle driving, provides the overall environment basis for the air conditioning system, and enables the air conditioning system to accurately complete the dynamic performance test of the air conditioning system on the calibration bench, which is ingenious and has strong applicability. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creating any creative labor.

[0032] Figure 1 The layout diagram of the calibration bench provided by one embodiment of the application is shown in the figure;

[0033] Figure 2 The layout diagram of the calibration bench provided by another embodiment of the application is shown in the figure;

[0034] Figure 3 A thermal load curve provided for an embodiment of the present application;

[0035] Figure 4 A temperature-time curve measured by a calibration bench of the present application, and a temperature-time curve measured by a vehicle test;

[0036] The figure marks: 100, outdoor simulation room; 101, passenger cabin simulation room; 102, buffer simulation room; 1, outer thermal insulation wall; 2, outdoor temperature control system; 3, partition thermal insulation wall; 4, buffer temperature control system; 5, passenger cabin fixed thermal insulation wall; 6, passenger cabin movable thermal insulation wall; 7, passenger cabin temperature control system; 8, humidifier; 9, air conditioner body; 10, outdoor heat exchanger; 11, air conditioning system; 12, air volume machine. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] As shown in Figure 1 The present application discloses an embodiment of a calibration bench for dynamic performance of an air conditioning system, which is used for simulating and testing the dynamic performance of the air conditioning system to be tested, i.e. to obtain the temperature-time curve of the air conditioning system to be tested under the driving state of the vehicle. The air conditioning system to be tested 11 comprises an air conditioner body 9 and an outdoor heat exchanger 10.

[0039] The calibration bench comprises an outdoor simulation room 100, a passenger cabin simulation room 101, a buffer simulation room 102 and a main control system,

[0040] The outdoor simulation room 100 is provided with an outdoor temperature control system 2, which is used for simulating the outdoor environment temperature of the vehicle air conditioner, and the outdoor heat exchanger 10 is located in the outdoor simulation room 100.

[0041] The space volume of the passenger cabin simulation room 101 is equivalent to the space volume of the passenger cabin of the vehicle under research. The passenger cabin simulation room 101 is provided with a passenger cabin temperature control system 7 and a humidifier 8, the humidifier 8 is used for simulating the water vapor exhaled by the passenger, and the humidifier 8 can simulate the water vapor data of one or more persons. The passenger cabin temperature control system 7 comprises a set thermal load curve, which is obtained by the temperature rising and falling test data of the vehicle air conditioner of the same type and level of the past vehicles; the air conditioner body 9 is located in the passenger cabin simulation room 101.

[0042] The buffer simulation room 102, the passenger cabin simulation room 101 is located in the buffer simulation room 102, the buffer simulation room 102 is provided with a buffer temperature control system 4, and the buffer temperature control system 4 is located outside the passenger cabin simulation room 101. The buffer simulation room 102 is used to provide a constant temperature basic environment, so that the passenger cabin temperature control system 7 can realize accurate control. The buffer temperature control system 4 and the passenger cabin temperature control system are combined, and can work more accurately according to the set heat load curve.

[0043] The main control system is connected and controls the air conditioner body 9, the outdoor temperature control system 2, the passenger cabin temperature control system 7, the buffer temperature control system 4 and the humidifier 8.

[0044] Preferably, the set heat load curve can also be obtained by analyzing and calculating the simulation data of the research vehicle. Specifically, the entire vehicle is simulated, and the material data of all parts of the vehicle are input, the power and / or heat conversion parameters of all components (such as the engine) capable of generating heat during vehicle operation are input, and then the set heat load curve is obtained by simulation calculation and analysis.

[0045] The calibration bench of the present application is designed ingeniously, the outdoor temperature control system 2 of the outdoor simulation room 100 simulates the low temperature environment outside the vehicle, the buffer temperature control system 4 and the passenger cabin temperature control system are combined, and can work more accurately according to the set heat load curve, accurately simulating the environment temperature of the passenger cabin during vehicle driving; the humidifier 8 further improves the simulation authenticity and is closer to the vehicle in driving; the calibration bench of the present application can move the test work of air conditioning dynamic performance to the air conditioning system bench, without waiting for the air conditioning system to be installed on the vehicle for testing, so as to identify the design risk in advance, reduce the workload of repeatedly disassembling the air conditioning system, and greatly shorten the research and development cycle of the new vehicle.

[0046] Further, the outdoor simulation room 100 and the buffer simulation room 102 form a day-shaped heat preservation wall structure, and the outdoor simulation room 100 and the buffer simulation room 102 are separated by a partition heat preservation wall 3. The outermost layer of the day-shaped heat preservation wall structure is surrounded by four outer heat preservation walls.

[0047] As shown in FIG. 1, Figure 2 As shown in FIG. 1,

[0048] The air volume machine 12 of the calibration bench of the present application can blow the outdoor heat exchanger 10, simulate the situation that the natural wind blows the outdoor heat exchanger 10 during vehicle driving, and the air speed of the air volume machine 12 is set by the main control system. The air volume machine 12 further improves the authenticity and accuracy of the calibration bench.

[0049] Further, the side wall of the passenger cabin simulation room 101 is rectangular, which includes three passenger cabin fixed insulation walls 5 and one passenger cabin movable insulation wall 6, which can be sealed and moved relative to the two passenger cabin fixed insulation walls 5.

[0050] The passenger cabin simulation room 101 of the present application can adjust the space size of the passenger cabin through the passenger cabin movable insulation wall 6, so that the calibration bench can cover the development of various vehicle models from micro cars to full-size SUVs / MPVs, and has wide application and strong practicability.

[0051] Further, the passenger cabin movable insulation wall 6 and the passenger cabin fixed insulation wall 5 have good flexible sealing, the passenger cabin fixed insulation wall 5 and the passenger cabin movable insulation wall 6 are rigid walls, and the processing precision is ensured. Specifically, the gap between the passenger cabin fixed insulation wall 5 and the passenger cabin movable insulation wall 6 is less than 2mm, after the volume is adjusted, the gap is sealed inside and outside by using glass glue, and the sealing effect is increased by using foam tape.

[0052] Preferably, the passenger cabin movable insulation wall 6 and the passenger cabin fixed insulation wall 5 are both processed by double-layer sheet metal plus polyester material. The double-layer sheet metal plus polyester material can more accurately simulate the heat transfer of the passenger cabin to the environment, and passively increase the accuracy of simulation.

[0053] The present application also discloses a calibration method based on the above calibration bench, which comprises the following steps:

[0054] The heat load curve of the to-be-tested air conditioning system 11 is obtained and introduced into the passenger cabin temperature control system 7; the passenger cabin temperature control system 7 includes a set heat load curve, which is obtained through the whole vehicle air conditioning temperature rising and falling test data of the past same type and same level vehicle, or is obtained through simulation data analysis and calculation of the vehicle under research.

[0055] The main control system controls and adjusts the temperature of the outdoor simulation room 100 to reach the set low temperature through the outdoor temperature control system 2, the main control system also controls and adjusts the temperature of the passenger cabin simulation room 101 to also reach the set low temperature through the passenger cabin temperature control system 7, which is equivalent to that the vehicle is completely warmed up to the set low temperature in the low temperature environment. The main control system also controls and adjusts the temperature of the buffer simulation room to reach the set suitable temperature through the buffer temperature control system 4;

[0056] The main control system controls the air conditioning system to start running, opens the set heating mode, and the main control system also controls the humidifier 8 to start working according to the set dehumidification amount. The passenger cabin temperature control system 7 starts heat exchange with the buffer simulation room, the temperature in the passenger cabin simulation room 101 is obtained in real time through the thermistor arranged in the passenger cabin simulation room 101, and is fed back to the main control system; the main control system draws the temperature change curve of the passenger cabin simulation room 101, that is, the dynamic performance of the air conditioning system in the passenger cabin in the driving state is obtained.

[0057] Preferably, the calibration bench can also measure the position pressure, superheat, subcooling, COP and other parameters of the air conditioning system as monitoring items.

[0058] The calibration method of the application can first reach the set suitable temperature through the buffer temperature control system 4 of the buffer simulation room 102, then perform heat exchange between the passenger cabin temperature control system 7 of the passenger cabin simulation room 101 and the buffer simulation room 102, and can more accurately execute the set heat load curve, accurately simulate the environment temperature of the passenger cabin when the vehicle is driving, and provide an overall environment basis for the air conditioning system, so that the air conditioning system can complete the dynamic performance test of the air conditioning system with high precision on the calibration bench, and the design is ingenious and has strong applicability.

[0059] Further, the passenger cabin temperature control system 7 is provided with an air volume test system, which can obtain the real-time air heat exchange power by combining the inlet and outlet air temperature, humidity measurement and air enthalpy difference calculation, and feed it back to the main control system, and automatically adjust it to the heat load curve, thereby improving the control accuracy of the passenger cabin temperature control system 7.

[0060] Specifically, the heat load curve of the low-temperature sealed passenger cabin is imported into the passenger cabin temperature control system 7, so that the heat exchange power between the passenger cabin simulation room 101 and the buffer simulation room 102 is consistent with the heat load curve in real time at each temperature point, that is, the dynamic heat load of the passenger cabin area on the bench is consistent with the whole vehicle test.

[0061] As shown in FIG. 1, Figure 2 As shown in FIG. 1,

[0062] When the main control system controls the air conditioning system to open the set heating mode, the main control system also controls the humidifier 8 to start working according to the set dehumidification amount.

[0063] The main control system controls the air conditioning system to open the set heating mode, the main control system also controls the humidifier 8 to start working according to the set dehumidification amount.

[0064] Further, the outdoor simulation room 100 and the buffer simulation room 102 form a day-shaped heat insulation wall structure, and the outdoor simulation room 100 and the buffer simulation room 102 are separated by a partition heat insulation wall 3.

[0065] Further, the side wall of the passenger cabin simulation room 101 is rectangular, which comprises three passenger cabin fixed heat insulation walls 5 and one passenger cabin movable heat insulation wall 6, and the passenger cabin movable heat insulation wall 6 can be sealed and moved relative to the two passenger cabin fixed heat insulation walls 5.

[0066] The passenger cabin movable heat insulation wall 6 and the passenger cabin fixed heat insulation wall 5 are both made of double-layered metal plates with polyester material.

[0067] In an embodiment, the method further comprises a step of checking:

[0068] After obtaining the temperature-time curve of the to-be-tested air conditioning system 11, the to-be-tested air conditioning system 11 is installed in the whole vehicle of the vehicle under test to obtain the temperature-time curve of the to-be-tested air conditioning system 11 in the whole vehicle, and the curves are compared.

[0069] For the calibration method of the dynamic performance of the air conditioning system of a certain vehicle model, the traditional whole vehicle test method is as follows:

[0070] The whole vehicle ring mode heating test condition is that the environmental temperature is-10℃, the vehicle is immersed to make the temperature in the vehicle reach the environmental temperature-10℃, then the vehicle is started, the vehicle is driven at a uniform speed of 40km / h, the air conditioner is turned on for maximum heating, after about 60min of test, the temperature-time curve in the vehicle (see Figure 4 ) is obtained, that is, the whole vehicle test result, and the whole test is carried out in the environmental bin with a rotating hub.

[0071] The calibration method of the present application is as follows:

[0072] The temperature of the outdoor simulation room 100 is adjusted to-10℃ by the outdoor temperature control system, the temperature of the buffer simulation room 102 is adjusted to 25℃ by the buffer temperature control system 4, and the temperature of the passenger cabin simulation room 101 is adjusted to-10℃ by the passenger cabin temperature control system 7.

[0073] The air heat exchange power in real time is calculated by the air volume test system of the passenger cabin temperature control system 7 combined with the air temperature, humidity measurement, and the calculated air enthalpy difference, and is fed back to the main control system, and is calibrated with the set heat load curve, the power of the passenger cabin temperature control system 7 is automatically adjusted by the main control system, so that the heat load curve (see Figure 3 ) can always be consistent.

[0074] Before starting the test, the heat load curve of the low-temperature sealed passenger cabin under different internal temperatures-10℃ environmental temperature is as shown in Figure 3 , which is introduced into the passenger cabin temperature control system 7.

[0075] At the beginning of the test, the test bench powers on the air conditioning system 11 to be measured, starts the air conditioning heat pump mode maximum heating condition (the air conditioner body air volume is maximum, the temperature is highest, and the foot blowing mode is started), and the air volume machine of the outdoor simulation room gives the wind speed equivalent to the vehicle 40km / h driving (which can be obtained by simulation calculation or actual vehicle test). The temperature of the passenger cabin simulation room 101 is continuously measured and recorded. After 60 minutes of test, the air conditioning box and the air volume and temperature control system are turned off to end the test. The main control system makes the temperature curve of the passenger cabin with time, which is the test result measured by the bench simulation vehicle test.

[0076] Subsequent verification: the results of the bench test and the vehicle test on this vehicle model are compared (see Figure 4 ), and the results show that the deviation of the indoor temperature tested by the bench is less than 2℃ compared with the indoor temperature of the vehicle test, the accuracy is high, and the representation is strong.

[0077] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between 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.

[0078] It should be noted that in the present application, relational terms such as "first" and "second" and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0079] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A dynamic performance calibration bench for an air conditioning system, characterized in that, The to-be-tested air conditioning system (11) comprises an air conditioning body (9) and an outdoor heat exchanger (10), and the calibration bench comprises: an outdoor simulation room (100) in which an outdoor temperature control system (2) for simulating the outdoor environment temperature of the whole vehicle air conditioner is arranged, and the outdoor heat exchanger (10) is located in the outdoor simulation room (100); a passenger cabin simulation room (101) having a space volume equivalent to that of the passenger cabin of the vehicle to be tested; the passenger cabin simulation room (101) is provided with a passenger cabin temperature control system (7) and a humidifier (8), the humidifier (8) is used for simulating the water vapor exhaled by passengers, the passenger cabin temperature control system (7) comprises a set heat load curve, the set heat load curve is obtained through the temperature rising and falling test data of the whole vehicle air conditioner of the same type and level vehicle in the past, and the air conditioning body (9) is located in the passenger cabin simulation room (101); a buffer simulation room (102), the passenger cabin simulation room (101) is located in the buffer simulation room (102), and a buffer temperature control system (4) is arranged in the buffer simulation room (102), the buffer temperature control system (4) is located outside the passenger cabin simulation room (101), and the passenger cabin temperature control system (7) exchanges heat with the buffer simulation room (102) when working; a main control system connected with and controlling the air conditioning body (9), the outdoor temperature control system (2), the passenger cabin temperature control system (7), the buffer temperature control system (4) and the humidifier (8).

2. The calibration test bench for dynamic performance of an air conditioning system according to claim 1, characterized in that: The outdoor simulation room (100) and the buffer simulation room (102) form a day-shaped heat preservation wall structure, and the outdoor simulation room (100) and the buffer simulation room (102) are separated by a partition heat preservation wall (3).

3. The calibration test bench for dynamic performance of an air conditioning system according to claim 1, wherein: The calibration bench further comprises a wind volume machine (12) connected with the main control system; the wind volume machine (12) is located in the outdoor simulation room (100), and the air outlet of the wind volume machine (12) is arranged opposite to the outdoor heat exchanger (10).

4. The calibration test bench for dynamic performance of an air conditioning system according to claim 1, wherein: The side wall of the passenger cabin simulation room (101) is rectangular, comprising three passenger cabin fixed heat preservation walls (5) and one passenger cabin movable heat preservation wall (6), and the passenger cabin movable heat preservation wall (6) can be sealed and moved relative to the two passenger cabin fixed heat preservation walls (5).

5. The calibration test bench for dynamic performance of an air conditioning system according to claim 4, wherein: The passenger cabin movable heat preservation wall (6) and the passenger cabin fixed heat preservation wall (5) are both made of double-layered metal plates with polyester material.

6. A calibration method based on the calibration bench of claim 1, characterized in that, The method comprises the following steps: obtaining the heat load curve of the to-be-tested air conditioning system (11) and inputting the heat load curve into the passenger cabin temperature control system (7); the main control system controls the outdoor temperature control system (2) to adjust the temperature of the outdoor simulation room (100) to reach the set low temperature, controls the passenger cabin temperature control system (7) to adjust the temperature of the passenger cabin simulation room (101) to also reach the set low temperature, and controls the buffer temperature control system (4) to adjust the temperature of the buffer simulation room to reach the set appropriate temperature; and The main control system controls the air conditioner system (11) to start the heating mode, and controls the humidifier (8) to work according to the set dehumidification amount; the passenger cabin temperature control system (7) obtains the temperature in the passenger cabin simulation room (101) through the thermistor arranged in the passenger cabin simulation room (101) and feeds back to the main control system; the main control system draws the temperature change curve of the passenger cabin simulation room (101).

7. The calibration method of claim 6, wherein: The passenger cabin temperature control system (7) has a wind volume test system, which can calculate the real-time air heat exchange power by combining the air inlet and outlet temperature, humidity measurement and calculated air enthalpy difference, and feed it back to the main control system for comparison with the heat load curve and automatic adjustment.

8. The calibration method of claim 6, wherein: The calibration bench also includes a wind volume machine (12) connected to the main control system; the wind volume machine (12) is located in the outdoor simulation room (100), and the air inlet of the wind volume machine (12) is aligned with the outdoor heat exchanger (10); The main control system controls the wind volume machine (12) to generate a set simulation wind speed at a set vehicle speed. The outdoor simulation room (100) and the buffer simulation room (102) form a day-shaped heat preservation wall structure, and the outdoor simulation room (100) and the buffer simulation room (102) are separated by a partition heat preservation wall (3); 9. The calibration method of claim 6, wherein: The side wall of the passenger cabin simulation room (101) is rectangular, which includes three passenger cabin fixed heat preservation walls (5) and one passenger cabin movable heat preservation wall (6), the passenger cabin movable heat preservation wall (6) can be sealed and moved relative to the two passenger cabin fixed heat preservation walls (5); The passenger cabin movable heat preservation wall (6) and the passenger cabin fixed heat preservation wall (5) are both made of double-layer metal plate and polyester material. It also includes:

10. The calibration method of claim 6, wherein, After obtaining the temperature-time curve of the air conditioner system (11) to be tested, the air conditioner system (11) to be tested is installed in the whole vehicle of the vehicle to be tested to obtain the temperature-time curve of the air conditioner system (11) to be tested in the whole vehicle, and the comparison is carried out. ​

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