Wet freezing test equipment for testing photovoltaic module

Abstract

The utility model discloses a wet freezing test device for testing a photovoltaic module, and aims to provide the wet freezing test device for testing the photovoltaic module, which can quickly cool the photovoltaic module so as to be favorable for shortening the wet freezing test time of the photovoltaic module and improving the test efficiency of the wet freezing test of the photovoltaic module. The device comprises a photovoltaic supporting unit which comprises a photovoltaic supporting surface located at the top of the photovoltaic supporting unit; the lower evaporator is arranged in the photovoltaic supporting unit; the lifting cooling unit comprises a lifting element positioned above the photovoltaic placement supporting surface and a lifting driving mechanism for driving the lifting element to lift up and down, and the bottom surface of the lifting element is a photovoltaic contact surface; and the upper evaporator is arranged in the lifting element.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic component wet-freeze testing, and in particular to a device for testing photovoltaic component wet-freeze testing. Background Art

[0002] Photovoltaic module wet freeze test machine is mainly used in the photovoltaic industry to test the parameters and performance of a series of photovoltaic modules such as ground-based crystalline silicon photovoltaic modules and ground-based thin-film photovoltaic modules after the temperature environment changes in high temperature, low temperature, alternating humidity and heat, or constant test; or test the parameters and performance after the temperature environment changes in constant humidity and heat test. Existing photovoltaic module wet freeze test devices generally cool down by circulating a condensing agent between the evaporator and the condenser, while the evaporator of the current photovoltaic module wet freeze test device is generally set on the inner wall of the test device, which makes the photovoltaic module cool down slowly when the photovoltaic module is tested in the photovoltaic module wet freeze test device, prolonging the duration of the photovoltaic module wet freeze test and reducing the efficiency of the photovoltaic module wet freeze test. Utility Model Content

[0003] The purpose of the utility model is to provide a photovoltaic module wet-freeze test device which can quickly cool down the photovoltaic module, thereby facilitating shortening the photovoltaic module wet-freeze test time and improving the test efficiency of the photovoltaic module wet-freeze test.

[0004] The technical solution of the utility model is:

[0005] A photovoltaic module wet freeze test device, characterized in that it includes:

[0006] A photovoltaic support unit, including a photovoltaic support surface located on the top of the photovoltaic support unit;

[0007] a lower evaporator, disposed in the photovoltaic support unit;

[0008] A lifting cooling unit includes a lifting element located above the photovoltaic placement support surface and a lifting drive mechanism for driving the lifting element to move up and down, and the bottom surface of the lifting element is a photovoltaic contact surface;

[0009] The upper evaporator is arranged in the lifting element. The specific use of a photovoltaic module wet freeze test device of this scheme is as follows:

[0010] Place the photovoltaic module to be tested flat on the photovoltaic support surface; then, drive the lifting element and the upper evaporator down together through the lifting drive mechanism, so that the photovoltaic contact surface contacts the photovoltaic module; in this way, during the wet-freeze test of the photovoltaic module, after the temperature of the lower evaporator and the upper evaporator is reduced, the low temperature can be quickly transmitted to the photovoltaic module to cool down the photovoltaic module, which is beneficial to shorten the wet-freeze test time of the photovoltaic module and improve the test efficiency of the wet-freeze test of the photovoltaic module.

[0011] Preferably, the system further comprises a condenser, a compressor and a condensing pipe connecting the condenser and the compressor, the compressor and the inlet of the lower evaporator are connected by a first connecting pipe, and the outlet of the lower evaporator and the condenser are connected by a second connecting pipe. During the wet freeze test of the photovoltaic module, the compressor extracts the condensing agent in the condensing pipe and inputs it into the lower evaporator through the first connecting pipe, and then the condensing agent absorbs heat after passing through the lower evaporator, so that the temperature of the lower evaporator is reduced; then, the condensing agent enters the condenser through the second connecting pipe to dissipate heat, and then the condensing agent enters the condensing pipe, and the cycle continues.

[0012] Preferably, the inlet of the upper evaporator is connected to the inlet of the first connecting pipe or the lower evaporator through a telescopic tube or a hose; the outlet of the upper evaporator is connected to the outlet of the second connecting pipe or the lower evaporator through a telescopic tube or a hose. In this way, the same compressor can provide condensing agent for the lower evaporator and the upper evaporator at the same time without affecting the lifting drive mechanism driving the lifting element and the upper evaporator to achieve lifting. Specifically,

[0013] During the wet-freeze test of photovoltaic modules, the compressor extracts the refrigerant in the condenser tube, and a part of the refrigerant in the first connecting tube is input into the lower evaporator, and the other part of the refrigerant in the first connecting tube is input into the upper evaporator through the telescopic tube or hose; then the condenser absorbs heat after passing through the lower evaporator and the upper evaporator, so that the temperature of the lower evaporator and the upper evaporator is reduced; then, the condenser of the upper evaporator enters the condenser through the second connecting tube and the telescopic tube or hose to dissipate heat, and the condenser of the lower evaporator enters the condenser through the second connecting tube to dissipate heat, and then the condenser enters the condenser tube, and the cycle is repeated.

[0014] Preferably, a heat dissipation fan is fixed on one side of the condenser exterior, so that the heat dissipation efficiency of the condensing agent in the condenser can be accelerated by the heat dissipation fan.

[0015] Preferably, a water pipe is further included. The lifting element is provided with an element inner cavity and a plurality of through holes. The through holes connect the element inner cavity with the photovoltaic contact surface. One end of the water pipe is connected with the element inner cavity. When performing a rain test, the water pipe will be input into the element inner cavity and then sprayed onto the photovoltaic module through the through holes to perform a rain test.

[0016] Preferably, it further comprises a water tank and a pump body, the other end of the water pipe is connected to the water tank, and the pump body is arranged on the water pipe. Thus, when performing a rain test, water in the water tank can be input into the inner cavity of the component through the pump body and the water pipe, and then sprayed onto the photovoltaic module through the through hole to perform a rain test.

[0017] Preferably, a water receiving tray is further included, the water receiving tray is located below the photovoltaic support unit, and the bottom of the water receiving tray is connected to the water tank through a return pipe. In this way, during the rain test, the water sprayed from the through hole will flow downward from the photovoltaic support unit into the water receiving tray, and then the water in the water receiving tray will flow back to the water tank through the return pipe for circulation.

[0018] Preferably, both the photovoltaic support unit and the lifting element are provided with temperature sensors, wherein the temperature sensor on the photovoltaic support unit is close to the photovoltaic support surface, and the temperature sensor on the lifting element is close to the photovoltaic contact surface. In this way, during the photovoltaic module wet freeze test, the temperature can be detected by the temperature sensor.

[0019] Preferably, a test box is also included, and a protective door is provided on the test box, and the photovoltaic support unit and the lifting and cooling unit are both located in the test box, so that the photovoltaic components can be conveniently taken in and out through the protective door.

[0020] Preferably, a plurality of heat dissipation holes are provided on the outer side of the test box, so that during the photovoltaic module wet freeze test, the heat emitted from the condenser can be discharged through the heat dissipation holes.

[0021] The beneficial effects of the utility model are:

[0022] During the wet-freeze test of photovoltaic modules, the photovoltaic modules to be tested are placed flat on the photovoltaic support surface; then, the lifting element and the upper evaporator are driven down together by the lifting drive mechanism to make the photovoltaic contact surface contact with the photovoltaic module; in this way, during the wet-freeze test of photovoltaic modules, after the temperature of the lower evaporator and the upper evaporator is reduced, the low temperature can be quickly transmitted to the photovoltaic modules to cool down the photovoltaic modules, which is beneficial to shorten the wet-freeze test time of photovoltaic modules and improve the test efficiency of the wet-freeze test of photovoltaic modules.

[0023] When conducting a rain test, the water in the water tank can be input into the inner cavity of the component through the pump body and the water pipe, and then sprayed onto the photovoltaic module through the through hole to conduct a rain test; then, the water flows downward from the photovoltaic support unit into the water receiving tray, and the water in the water receiving tray flows back to the water tank through the return pipe for circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a schematic diagram of the internal structure of a photovoltaic component wet freeze test device.

[0025] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0026] Figure 3 The utility model is a front view of a photovoltaic module wet freeze test device.

[0027] Figure 4 It is a rear view of a photovoltaic component wet-freeze test device of the utility model.

[0028] In the figure:

[0029] Test box 1, protective door 1.0, heat dissipation hole 1.1;

[0030] Support frame 2;

[0031] Lifting cooling unit 3, lifting element 3.1, lifting drive mechanism 3.2, guide rod 3.3;

[0032] Evaporator 4;

[0033] Photovoltaic support unit 5;

[0034] Lower evaporator 6

[0035] Condenser 7;

[0036] Condenser 8;

[0037] Compressor 9;

[0038] A first connecting pipe 10;

[0039] Telescopic tube 11;

[0040] A second connecting pipe 12;

[0041] Water receiving tray 13;

[0042] Cooling fan 14;

[0043] Temperature sensor 15;

[0044] Photovoltaic module 16;

[0045] Water pipe 17, front water pipe 17.1, rear water pipe 17.2;

[0046] Pump body 18;

[0047] Water tank 19. DETAILED DESCRIPTION

[0048] Specific embodiment 1, as Figure 1 , Figure 2 As shown, a photovoltaic module wet-freeze test device includes a photovoltaic support unit 5, a lower evaporator 6, a lifting and cooling unit 3 and an upper evaporator 4.

[0049] The photovoltaic support unit 5 comprises a photovoltaic support surface located on the top of the photovoltaic support unit 5. The lower evaporator 6 is arranged in the photovoltaic support unit 5.

[0050] The lifting cooling unit 3 includes a lifting element 3.1 located above the photovoltaic support surface and a lifting drive mechanism 3.2 that drives the lifting element 3.1 to move up and down. The lifting drive mechanism 3.2 is a cylinder, an oil cylinder, an electric cylinder, a linear module, or other lifting mechanisms available on the market. The bottom surface of the lifting element 3.1 is a photovoltaic contact surface. The upper evaporator 4 is arranged in the lifting element 3.1.

[0051] The specific use of the photovoltaic module wet freeze test equipment of this embodiment is as follows:

[0052] During the wet-freeze test on photovoltaic modules, the photovoltaic modules 16 to be tested are placed flat on the photovoltaic support surface; then, the lifting element 3.1 and the upper evaporator 4 are driven down together by the lifting drive mechanism 3.2, so that the photovoltaic contact surface contacts the photovoltaic module; since the lower evaporator 6 is arranged in the photovoltaic support unit 5, and the upper evaporator 4 is arranged in the lifting element 3.1, during the wet-freeze test on the photovoltaic modules, after the temperatures of the lower evaporator 6 and the upper evaporator 4 are reduced, the low temperature can be quickly transmitted to the photovoltaic modules to cool down the photovoltaic modules, thereby shortening the wet-freeze test time of the photovoltaic modules and improving the test efficiency of the wet-freeze test on the photovoltaic modules.

[0053] Specific embodiment 2, as Figure 1 , Figure 2 , Figure 3 As shown, a photovoltaic module wet-freeze test device includes a test box 1, a photovoltaic support unit 5, a lower evaporator 6, a lifting cooling unit 3 and an upper evaporator 4.

[0054] The test box 1 is provided with a protective door 1.0. In this embodiment, the protective door 1.0 is arranged at the upper part of the test box 1. The photovoltaic support unit 5 and the lifting and cooling unit 3 are both located in the test box 1.

[0055] The photovoltaic support unit 5 comprises a photovoltaic support surface located on the top of the photovoltaic support unit 5. The lower evaporator 6 is arranged in the photovoltaic support unit 5.

[0056] The lifting cooling unit 3 comprises a lifting element 3.1 located above the photovoltaic support surface and a lifting drive mechanism 3.2 for driving the lifting element 3.1 to move up and down. The bottom surface of the lifting element 3.1 is a photovoltaic contact surface. The upper evaporator 4 is arranged in the lifting element 3.1.

[0057] In this embodiment, the photovoltaic support surface is parallel to the photovoltaic contact surface. Of course, it should be noted that the photovoltaic support surface and the photovoltaic contact surface may not be parallel, and the relative arrangement angle between the photovoltaic support surface and the photovoltaic contact surface may be set according to the upper and lower surfaces of the specific photovoltaic module.

[0058] In this embodiment, a support frame 2 is fixedly installed on the upper part of the test box 1. A vertical guide sleeve and a guide rod 3.3 sliding along the vertical guide sleeve are provided on the support frame 2. The lower end of the guide rod 3.3 is connected to the lifting element 3.1. The lifting drive mechanism 3.2 is provided on the support frame 2, and the lifting drive mechanism 3.2 is arranged above the support frame 2. The lifting drive mechanism 3.2 is a pneumatic cylinder or an oil cylinder or an electric cylinder or a linear module or other lifting mechanisms available on the market. In this embodiment, the lifting drive mechanism 3.2 is a pneumatic cylinder or an oil cylinder, and the piston rod of the pneumatic cylinder or the oil cylinder is connected to the lifting element 3.1.

[0059] The specific use of the photovoltaic module wet freeze test equipment of this embodiment is as follows:

[0060] During the wet-freeze test on photovoltaic modules, the photovoltaic modules 16 to be tested are placed flat on the photovoltaic support surface; then, the lifting element 3.1 and the upper evaporator 4 are driven down together by the lifting drive mechanism 3.2, so that the photovoltaic contact surface contacts the photovoltaic module; since the lower evaporator 6 is arranged in the photovoltaic support unit 5, and the upper evaporator 4 is arranged in the lifting element 3.1, during the wet-freeze test on the photovoltaic modules, after the temperatures of the lower evaporator 6 and the upper evaporator 4 are reduced, the low temperature can be quickly transmitted to the photovoltaic modules to cool down the photovoltaic modules, thereby shortening the wet-freeze test time of the photovoltaic modules and improving the test efficiency of the wet-freeze test on the photovoltaic modules.

[0061] Specifically, Figure 1 , Figure 2 , Figure 3 As shown, a test equipment for testing the wet freezing of photovoltaic modules also includes a condenser 7, a compressor 9 and a condenser 8. The condenser 7, the compressor 9 and the condenser 8 are located in the test box 1. In this embodiment, the condenser 7, the compressor 9 and the condenser 8 are located at the bottom of the test box 1. The condenser 8 is located between the condenser 7 and the compressor 9. The condenser 8 connects the condenser 7 and the compressor 9. In this embodiment, the condenser 7 and the condenser 8 are interconnected by a pipeline, and the condenser 8 and the compressor 9 are interconnected by a pipeline. The compressor 9 is connected to the inlet of the lower evaporator 6 by a first connecting pipe 10. The outlet of the lower evaporator 6 is connected to the condenser 7 by a second connecting pipe 12.

[0062] In one implementation of this embodiment, Figure 1As shown, the inlet of the upper evaporator 4 is connected to the first connecting pipe 10 via a telescopic pipe 11, which is vertically distributed; the outlet of the upper evaporator 4 is connected to the second connecting pipe 12 via a telescopic pipe 11, which is vertically distributed. In this way, the lifting drive mechanism 3.2 will not affect the lifting element 3.1 and the upper evaporator 4. At the same time, the same compressor 9 can also provide condensing agent for the lower evaporator 6 and the upper evaporator 4 at the same time. Specifically, during the wet freeze test of the photovoltaic module, the compressor 9 extracts the condensing agent in the condenser tube 8, and a part of the condensing agent in the first connecting tube 10 is input into the lower evaporator 6, and the other part of the condensing agent in the first connecting tube 10 is input into the upper evaporator 4 through the telescopic tube 11; then the condensing agent absorbs heat after passing through the lower evaporator 6 and the upper evaporator 4, so that the temperature of the lower evaporator 6 and the upper evaporator 4 is reduced; then, the condensing agent of the upper evaporator 4 enters the condenser 7 through the second connecting tube 12 and the telescopic tube 11 to dissipate heat, and the condensing agent of the lower evaporator 6 enters the condenser 7 through the second connecting tube 12 to dissipate heat, and then the condensing agent enters the condenser tube 8, and the cycle is repeated.

[0063] In another implementation of this embodiment, the inlet of the upper evaporator 4 is connected to the first connecting pipe 10 through a hose; the outlet of the upper evaporator 4 is connected to the second connecting pipe 12 through a hose (not shown in the figure). In this way, the lifting drive mechanism 3.2 will not affect the lifting and lowering of the lifting element 3.1 and the upper evaporator 4. At the same time, the same compressor 9 can also be used to provide condensing agent for the lower evaporator 6 and the upper evaporator 4 at the same time. Specifically, during the wet freezing test of the photovoltaic module, the compressor 9 extracts the condensing agent in the condensing tube 8, and a part of the condensing agent in the first connecting pipe 10 is input into the lower evaporator 6, and another part of the condensing agent in the first connecting pipe 10 is input into the upper evaporator 4 through the hose; then the condensing agent absorbs heat after passing through the lower evaporator 6 and the upper evaporator 4, so that the temperature of the lower evaporator 6 and the upper evaporator 4 is reduced; then, the condensing agent of the upper evaporator 4 enters the condenser 7 through the second connecting pipe 12 and the hose for heat dissipation, and the condensing agent of the lower evaporator 6 enters the condenser 7 through the second connecting pipe 12 for heat dissipation, and then the condensing agent enters the condensing tube 8, and the cycle continues.

[0064] In the third implementation of this embodiment, the inlet of the upper evaporator 4 is connected to the inlet of the lower evaporator 6 via a telescopic tube 11, and the telescopic tube 11 is vertically distributed; the outlet of the upper evaporator 4 is connected to the outlet of the lower evaporator 6 via a telescopic tube 11, and the telescopic tube 11 is vertically distributed. In this way, the lifting drive mechanism 3.2 will not be affected in driving the lifting element 3.1 and the upper evaporator 4 to lift and lower. At the same time, the same compressor 9 can also provide condensing agent for the lower evaporator 6 and the upper evaporator 4 at the same time. Specifically, during the wet freeze test of the photovoltaic module, the compressor 9 extracts the condensing agent in the condenser tube 8, and a part of the condensing agent in the first connecting tube 10 is input into the lower evaporator 6, and the other part of the condensing agent in the first connecting tube 10 is input into the upper evaporator 4 through the telescopic tube 11; then the condensing agent absorbs heat after passing through the lower evaporator 6 and the upper evaporator 4, so that the temperature of the lower evaporator 6 and the upper evaporator 4 is reduced; then, the condensing agent of the upper evaporator 4 enters the condenser 7 through the second connecting tube 12 and the telescopic tube 11 to dissipate heat, and the condensing agent of the lower evaporator 6 enters the condenser 7 through the second connecting tube 12 to dissipate heat, and then the condensing agent enters the condenser tube 8, and the cycle is repeated.

[0065] In the fourth implementation of this embodiment, the inlet of the upper evaporator 4 is connected to the inlet of the lower evaporator 6 by a hose; the outlet of the upper evaporator 4 is connected to the outlet of the lower evaporator 6 by a hose (not shown in the figure). In this way, the lifting drive mechanism 3.2 will not affect the lifting and lowering of the lifting element 3.1 and the upper evaporator 4. At the same time, the same compressor 9 can also be used to provide condensing agent for the lower evaporator 6 and the upper evaporator 4 at the same time. Specifically, during the wet freezing test of the photovoltaic module, the compressor 9 extracts the condensing agent in the condensing tube 8, and a part of the condensing agent in the first connecting tube 10 is input into the lower evaporator 6, and another part of the condensing agent in the first connecting tube 10 is input into the upper evaporator 4 through the hose; then the condensing agent absorbs heat after passing through the lower evaporator 6 and the upper evaporator 4, so that the temperature of the lower evaporator 6 and the upper evaporator 4 is reduced; then, the condensing agent of the upper evaporator 4 enters the condenser 7 through the second connecting tube 12 and the hose for heat dissipation, and the condensing agent of the lower evaporator 6 enters the condenser 7 through the second connecting tube 12 for heat dissipation, and then the condensing agent enters the condensing tube 8, and the cycle is repeated.

[0066] In this embodiment, the photovoltaic support unit 5 includes a first support bottom plate, a first support top plate, and a connecting member connecting the first support bottom plate and the first support top plate. The upper surface of the first support top plate constitutes the photovoltaic support surface. The lower evaporator 6 is located between the first support bottom plate and the first support top plate, and the lower evaporator 6 is close to or in close contact with the lower surface of the first support top plate.

[0067] The lifting element 3.1 comprises a second supporting bottom plate, a second supporting top plate and a connecting member connecting the second supporting bottom plate and the second supporting top plate. The lower surface of the second supporting bottom plate constitutes the photovoltaic contact surface. The upper evaporator 4 is located between the second supporting bottom plate and the second supporting top plate, and the upper evaporator 4 is close to or in close contact with the upper surface of the second supporting bottom plate.

[0068] The second connecting pipe 12 is also provided with a dryer and a capillary tube.

[0069] Further, such as Figure 2 As shown, both the photovoltaic support unit 5 and the lifting element 3.1 are provided with temperature sensors 15, wherein the temperature sensor on the photovoltaic support unit 5 is close to the photovoltaic support surface, and the temperature sensor on the lifting element 3.1 is close to the photovoltaic contact surface. In this way, during the photovoltaic module wet freeze test, the temperature can be detected by the temperature sensor.

[0070] Further, such as Figure 1 As shown, a heat dissipation fan 14 is fixed to one side of the outside of the condenser 7. In this way, the heat dissipation fan can be used to accelerate the heat dissipation efficiency of the refrigerant in the condenser 7. In this embodiment, the heat dissipation fan is fixed to the outer side of the condenser 7 by bolts or buckles.

[0071] Further, such as Figure 4 As shown, a plurality of heat dissipation holes 1.1 are provided on the outer side of the test box 1. In this way, during the wet freeze test of the photovoltaic module, the heat dissipated in the condenser 7 can be discharged through the heat dissipation holes. In this embodiment, the heat dissipation holes are arranged at the lower part of the outer side of the test box 1, and the outer side of the test box 1 where the heat dissipation holes are located is close to the cooling fan.

[0072] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 2, except that:

[0073] like Figure 1 , Figure 4 As shown, a test device for testing the wet freezing of photovoltaic modules also includes a water pipe 17. The lifting element 3.1 is provided with an element cavity and a plurality of through holes. The through holes connect the element cavity with the photovoltaic contact surface. One end of the water pipe 17 is connected to the element cavity. When performing a rain test, the water pipe 17 will be input into the element cavity, and then sprayed onto the photovoltaic module through the through holes to perform a rain test.

[0074] In this embodiment, the inner cavity of the element is arranged in the second supporting bottom plate, and an interface communicating with the inner cavity of the element is arranged on the second supporting bottom plate. One end of the water pipe 17 is connected to the interface. The water pipe 17 is a hose; or a section of the water pipe 17 connected to the interface is a hose.

[0075] Further, such as Figure 1 , Figure 4As shown, a wet freeze test device for testing photovoltaic modules also includes a water tank 19 and a pump body 18. The other end of the water pipe 17 is connected to the water tank 19. The pump body 18 is arranged on the water pipe 17. In this way, when performing a rain test, water in the water tank 19 can be input into the inner cavity of the component through the pump body 18 and the water pipe 17, and then sprayed onto the photovoltaic module through the through hole to perform a rain test.

[0076] In this embodiment, the water delivery pipe 17 includes a front water delivery pipe 17.1 and a rear water delivery pipe 17.2. The front water delivery pipe 17.1 connects the pump body 18 and the inner cavity of the element, and the front water delivery pipe 17.1 is a hose. The rear water delivery pipe 17.2 connects the pump body 18 and the water tank 19.

[0077] In this embodiment, the water tank 19 and the pump body 18 are arranged outside the test box 1, so that the water tank 19 and the pump body 18 are arranged conveniently without occupying the space inside the test box 1. Of course, it should be said that the purpose is that the water tank 19 and the pump body 18 can also be arranged inside the test box 1.

[0078] Further, such as Figure 1 , Figure 4 As shown, a test device for testing the wet freezing of photovoltaic modules also includes a water receiving tray 13. The water receiving tray 13 is located below the photovoltaic support unit 5, and the bottom of the water receiving tray 13 is connected to the water tank 19 through a return pipe. In this way, during the rain test, the water sprayed from the through hole will flow downward from the photovoltaic support unit 5 into the water receiving tray 13, and then the water in the water receiving tray 13 will flow back to the water tank 19 through the return pipe for circulation. In this embodiment, the water receiving tray 13 is fixed in the test box 1.

[0079] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment according to the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A photovoltaic module wet freeze test device, comprising: A photovoltaic support unit, including a photovoltaic support surface located on the top of the photovoltaic support unit; a lower evaporator, disposed in the photovoltaic support unit; A lifting cooling unit includes a lifting element located above the photovoltaic placement support surface and a lifting drive mechanism for driving the lifting element to move up and down, and the bottom surface of the lifting element is a photovoltaic contact surface; The upper evaporator is arranged in the lifting element.

2. A photovoltaic module wet freeze test device according to claim 1, characterized in that: It also includes a condenser, a compressor and a condenser pipe connecting the condenser and the compressor. The compressor is connected to the inlet of the lower evaporator through a first connecting pipe, and the outlet of the lower evaporator is connected to the condenser through a second connecting pipe.

3. A photovoltaic module wet freeze test device according to claim 2, characterized in that: The inlet of the upper evaporator is connected to the first connecting pipe or the inlet of the lower evaporator through a telescopic pipe or a hose; the outlet of the upper evaporator is connected to the second connecting pipe or the outlet of the lower evaporator through a telescopic pipe or a hose.

4. A photovoltaic module wet freeze test device according to claim 2 or 3, characterized in that: A heat dissipation fan is fixed on one side of the outside of the condenser.

5. A photovoltaic module wet-freeze test device according to claim 1, 2 or 3, characterized in that: It also includes a water pipe. The lifting element is provided with an element inner cavity and a plurality of through holes. The through holes connect the element inner cavity with the photovoltaic contact surface. One end of the water pipe is connected to the element inner cavity.

6. A photovoltaic module humidity and freezing test device according to claim 5, characterized in that: It also includes a water tank and a pump body. The other end of the water pipe is connected to the water tank, and the pump body is arranged on the water pipe.

7. A photovoltaic module humidity and freezing test device according to claim 6, characterized in that: It also includes a water receiving tray, which is located below the photovoltaic support unit, and the bottom of the water receiving tray is connected to the water tank through a return water pipe.

8. A photovoltaic module humidity and freezing test device according to claim 1, 2 or 3, characterized in that: The photovoltaic support unit and the lifting element are both provided with temperature sensors, wherein the temperature sensor on the photovoltaic support unit is close to the photovoltaic support surface, and the temperature sensor on the lifting element is close to the photovoltaic contact surface.

9. A photovoltaic module humidity and freezing test device according to claim 1, 2 or 3, characterized in that: It also includes a test box, which is provided with a protective door, and the photovoltaic support unit and the lifting and cooling unit are both located in the test box.

10. The photovoltaic module humidity and freezing test equipment according to claim 9, characterized in that: The outer side surface of the test box is provided with a plurality of heat dissipation holes.

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