Cooling device for photovoltaic modules and applicable testing system

Abstract

This application provides a cooling device for photovoltaic modules and a suitable testing system thereof, relating to the field of photovoltaic testing technology. A cooling device for photovoltaic modules is suitable for adjusting the temperature of photovoltaic modules during testing. The cooling device includes: a temperature detection module adapted to acquire real-time temperatures of the light-incident surface and the back-light surface of the photovoltaic module during testing, with the light-incident surface and the back-light surface facing each other; and a cooling module located near the edge of the photovoltaic module, adapted to generate cold airflows directed towards the light-incident surface and the back-light surface respectively when the real-time temperature exceeds a preset temperature range, wherein the cold airflow directed towards the light-incident surface is parallel to the light-incident surface; and / or the cold airflow directed towards the back-light surface is parallel to the back-light surface.

Description

Technical Field

[0001] This application mainly relates to the field of photovoltaic testing technology, and in particular to a cooling device for photovoltaic modules and a testing system applicable to it. Background Technology

[0002] During steady-state IV testing of photovoltaic modules, especially perovskite and tandem cells, the module temperature rises sharply, which can easily lead to thermal runaway. Although electrical parameters can be corrected by calculating the temperature coefficient, the relationship between perovskite and tandem cells and the test temperature is not very clear. Therefore, more precise temperature control is needed during the testing process to simplify the testing procedure and improve the accuracy.

[0003] Therefore, there is an urgent need for a cooling device that can rapidly cool down components that are heating up rapidly. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a cooling device for photovoltaic modules and a suitable testing system therefor, so as to achieve rapid cooling of photovoltaic modules during the testing process.

[0005] To address the aforementioned technical problems, this application provides a cooling device for photovoltaic modules, suitable for adjusting the temperature of photovoltaic modules during testing. The cooling device includes: a temperature detection module, adapted to acquire the real-time temperatures of the light-incident surface and the backlight surface of the photovoltaic module respectively during testing, with the light-incident surface and the backlight surface facing each other; and a cooling module, located near the edge of the photovoltaic module, adapted to generate cold airflows directed towards the light-incident surface and the backlight surface respectively when the real-time temperature exceeds a preset temperature range, wherein the cold airflow directed towards the light-incident surface is parallel to the light-incident surface; and / or the cold airflow directed towards the backlight surface is parallel to the backlight surface.

[0006] Optionally, the temperature detection module includes: at least one non-contact temperature detection unit, which is disposed above the light-incident surface and is adapted to acquire the real-time temperature of at least a portion of the light-incident surface.

[0007] Optionally, the temperature detection module includes: at least one contact temperature detection unit, the contact temperature detection unit being attached to the backlight surface, the contact temperature detection unit being adapted to acquire the real-time temperature of at least a portion of the backlight surface.

[0008] Optionally, the cooling module includes: at least one light-incident surface cooling unit, the light-incident surface cooling unit having a first air outlet extending along the edge of the light-incident surface, the first air outlet being close to the edge of the light-incident surface, the light-incident surface cooling unit being adapted to blow the generated cold airflow to at least a portion of the light-incident surface through the first air outlet; and at least one backlight surface cooling unit, the backlight surface cooling unit having a second air outlet extending along the edge of the backlight surface, the second air outlet being close to the edge of the backlight surface, the backlight surface cooling unit being adapted to blow the generated cold airflow to at least a portion of the backlight surface through the second air outlet.

[0009] Optionally, the light-receiving cooling unit includes a vortex tube adapted to separate compressed air entering the vortex tube into cold air and hot air, and to send the cold air out through a first air outlet to form a cold airflow; and / or the backlight cooling unit includes a vortex tube adapted to separate compressed air entering the vortex tube into cold air and hot air, and to send the cold air out through a second air outlet to form a cold airflow.

[0010] Optionally, the preset temperature range is 23℃-27℃.

[0011] Optionally, the cooling device further includes a control module, which is adapted to activate the cooling module when the real-time temperature is higher than a preset temperature range.

[0012] To address the aforementioned technical problems, this application provides a photovoltaic module testing system suitable for performing steady-state IV testing or maximum power point tracking testing on photovoltaic modules. The testing system includes: the aforementioned photovoltaic module cooling device, which is suitable for cooling down the photovoltaic module that has heated up during the steady-state IV testing or maximum power point tracking testing.

[0013] Optionally, the testing system further includes: a light source adapted to illuminate the light-incident surface of the photovoltaic module; and a support device adapted to contact the back surface of the photovoltaic module to fix and support the photovoltaic module and to make the light-incident surface perpendicular to the illumination light from the light source.

[0014] Optionally, the support device includes at least one pin adapted to support and secure the backlight surface.

[0015] Optionally, the testing system further includes: a heat insulation chamber, wherein the temperature detection module of the light source, the support device, and the cooling device are all located inside the heat insulation chamber; when the cooling module of the cooling device includes at least one light-incident surface cooling unit and at least one back-light surface cooling unit, and the light-incident surface cooling unit and / or the back-light surface cooling unit includes a vortex tube, the vortex tube is adapted to discharge the generated hot air outside the heat insulation chamber.

[0016] Compared with the prior art, this application has the following advantages: on the one hand, it simultaneously blows cold air onto the light-incident surface and the back surface of the photovoltaic module whose real-time temperature is higher than the preset temperature range, thereby rapidly reducing the temperature of the photovoltaic module; on the other hand, by having the cold air flow parallel to the light-incident surface or the back surface, the cold air flow can fully remove the heat from the photovoltaic module, achieving efficient cooling. Attached Figure Description

[0017] The accompanying drawings are included to provide a further understanding of this application; they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of this application and, together with this specification, serve to explain the principles of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of a photovoltaic module testing system according to an embodiment of this application;

[0019] Figure 2 yes Figure 1 Top view of the light-receiving surface, the light-receiving surface cooling unit, and the backlight cooling unit; and

[0020] Figure 3 yes Figure 2 A schematic diagram of the cooling unit with a central light-receiving surface. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0022] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0027] It should be understood that when a component is referred to as "on another component," "connected to another component," "coupled to another component," or "in contact with another component," it can be directly on, connected to, coupled to, or in contact with that other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component," "directly connected to," "directly coupled to," or "directly in contact with" another component, there is no intervening component. Similarly, when a first component is referred to as "electrically contacting" or "electrically coupled to" a second component, there is an electrical path between the first and second components that allows current to flow. This electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even if there is no direct contact between the conductive components.

[0028] Figure 1 This is a schematic diagram of a photovoltaic module testing system according to an embodiment of this application. Figure 1 The test system 100 shown is suitable for performing steady-state IV testing or maximum power point tracking (MPPT) testing on the photovoltaic module 200. The photovoltaic module 200 includes a light-incident surface 21 and a back-light surface 22, which are opposite to each other. It can be understood that the light-incident surface 21 is the side of the photovoltaic module 200 that directly receives sunlight, and the back-light surface is the side opposite to the light-incident surface 21 that does not receive sunlight.

[0029] Continue to refer to Figure 1The testing system 100 includes a light source 11, a support device 12, a cooling device 13, and a heat insulation chamber 14. The light source 11 is adapted to illuminate the light-incident surface 21 of the photovoltaic module 200. The support device 12 includes a plurality of pins 121, which are adapted to support and fix the backlight surface 22. In this embodiment, one end of the pin 121 contacts the backlight surface 22, and the other end of the pin 121 is fixed to the ground. The pin 121 can extend and retract along its own axial direction, thereby adjusting the incident angle between the light-incident surface 21 of the photovoltaic module 200 supported by the pin 121 and the illumination light from the light source 11. It should be noted that this application does not limit the fixing method of the pins. In some embodiments, the other end of the pin can be fixed to other fixing components of the support device. Further, in this embodiment, the incident angle is 90°, that is, the light-incident surface 21 is perpendicular to the illumination light. Through the aforementioned pins 121, the support device 12 can support and fix the photovoltaic module 200, and make the light-incident surface 21 perpendicular to the illumination light. It should be noted that this application does not limit the number of ejector pins 121; in some embodiments, the support device may contain only one ejector pin. Furthermore, this application does not limit the support device to include other support components, thereby cooperating with the ejector pin to achieve a more stable and flexible support and fixation function.

[0030] Continue to refer to Figure 1 The cooling device 13 is adapted to regulate the temperature of the photovoltaic module 200 during the testing process. Specifically, the cooling device 13 is adapted to cool down the photovoltaic module 200 that has heated up during the steady-state IV test or the maximum power point tracking test, and to stop cooling the photovoltaic module 200 after the real-time temperature of the photovoltaic module 200 is within a preset temperature range, thereby stabilizing the real-time temperature of the photovoltaic module 200 within the preset temperature range. In this embodiment, the preset temperature range is 23℃-27℃.

[0031] Continue to refer to Figure 1 In this embodiment, the cooling device 13 includes a temperature detection module 131, a cooling module 134, and a control module (not shown in the figure). The temperature detection module 131 includes multiple non-contact temperature detection units 132 and multiple contact temperature detection units 133. The non-contact temperature detection units 132 are disposed above the light-incident surface 21 and are adapted to acquire the real-time temperature of a portion of the light-incident surface 21. In this embodiment, the non-contact temperature detection unit 132 includes an optical temperature sensor, such as an infrared temperature sensor. It is understood that... Figure 1The positional relationship between the non-contact temperature detection unit 132 and the light source 11 is limited. Specifically, in this embodiment, the non-contact temperature detection unit 132 is positioned in a location unaffected by the light source 11 to improve the accuracy of the real-time temperature data. Furthermore, the non-contact temperature detection unit 132 is positioned in a location that does not affect the illumination of the light-incident surface 21 by the light source 11, thereby improving the accuracy of the test results for the photovoltaic module 200. In this embodiment, by using the non-contact temperature detection unit 132, which does not directly contact the light-incident surface 21, the real-time temperature of the light-incident surface 21 can be obtained, avoiding interference with the illumination received by the light-incident surface and improving the accuracy of the data collected from the photovoltaic module 200 during the test. The contact temperature detection unit 133 is attached to the backlight surface 22 and is suitable for obtaining the real-time temperature of a portion of the backlight surface 22. It is understood that in this embodiment, the backlight surface 22 is not affected by the illumination and is not used to receive illumination; therefore, the contact temperature detection unit 133 can be directly attached to the backlight surface 22 to simply, effectively, and accurately obtain the real-time temperature of the backlight surface 22. Furthermore, the combined area corresponding to all non-contact temperature detection units 132 constitutes the entire area of ​​the light-incident surface 21, and the combined area corresponding to all contact temperature detection units 133 constitutes the entire area of ​​the backlight surface 22. With the above configuration, the temperature detection module 131 is suitable for acquiring the real-time temperatures of the light-incident surface 21 and the backlight surface 22 of the photovoltaic module 200 during testing. It should be noted that this application does not limit the number of non-contact and contact temperature detection units or the range of real-time temperatures collected. In some embodiments, the temperature detection module may include only one non-contact temperature detection unit or only one non-contact temperature detection unit. In other embodiments, the non-contact temperature detection unit may collect the real-time temperature of the entire light-incident surface, or the contact temperature detection unit may collect the real-time temperature of the entire backlight surface. Furthermore, Figure 1 The non-contact temperature detection unit 132 is shown as an example only, located above the light-incident surface 21. In some embodiments, the non-contact temperature detection unit may be located diagonally above the light-incident surface.

[0032] Continue to refer to Figure 1 In this embodiment, the cooling module 134 includes multiple light-incident surface cooling units 135 and multiple backlight surface cooling units 136. Further refer to... Figure 2The light-incident cooling unit 135 has a first air outlet 31 extending along the edge of the light-incident surface 21, close to the edge of the light-incident surface 21. The light-incident cooling unit 135 is adapted to blow the generated cold airflow towards a portion of the light-incident surface 21 through the first air outlet 31. The backlight cooling unit 136 has a second air outlet 32 ​​extending along the edge of the backlight surface 22, close to the edge of the backlight surface 22. The backlight cooling unit 136 is adapted to blow the generated cold airflow towards a portion of the backlight surface 22 through the second air outlet 32. In this embodiment, the cold airflow blowing towards the light-incident surface 21 is parallel to the light-incident surface 21, and the cold airflow blowing towards the backlight surface 22 is parallel to the backlight surface 22, thereby enabling the cold airflow to fully absorb the heat from the light-incident surface 21 or the backlight surface 22, achieving rapid cooling of the photovoltaic module 200. With the above settings, in this embodiment, the cooling module 134 is adapted to generate cold airflows directed towards the light-incident surface 21 and the backlight surface 22 respectively when the real-time temperature is higher than a preset temperature range. It should be noted that this application does not limit all cold airflows to being parallel to the backlight surface or the light-incident surface. In some embodiments, some cold airflows gradually move away from the backlight surface or the light-incident surface to avoid excessive cooling, or gradually move closer to the backlight surface or the light-incident surface to improve the cooling effect on specific areas. It can be understood that in this embodiment, each light-incident surface cooling unit 135 corresponds one-to-one with each non-contact temperature detection unit 132, thereby performing real-time temperature measurement and cooling of each portion of the light-incident surface 21. Correspondingly, in this embodiment, each backlight surface cooling unit 136 corresponds one-to-one with each contact temperature detection unit 133, thereby performing real-time temperature measurement and cooling of each portion of the backlight surface 22. It should be noted that... Figure 1 and Figure 2 The example shown only illustrates the arrangement of a backlight cooling unit 136 and an incident light cooling unit 135 on opposite sides of the photovoltaic module 200. However, this application does not limit the arrangement position and number of the backlight cooling unit and the incident light cooling unit. In some embodiments, the backlight cooling unit and the incident light cooling unit can be arranged on the same side to blow cool airflow from the same direction onto the opposite incident light surface and backlight surface of the same area of ​​the photovoltaic module. In other embodiments, only one backlight cooling unit or one incident light cooling unit can be arranged.

[0033] Continue to refer to Figure 2 and Figure 3In this embodiment, the light-receiving surface cooling unit 135 includes a vortex tube 41 and an air knife 42. The vortex tube 41 includes an air inlet 411, a pneumatic control valve 412, a vortex tube body 413, and a temperature valve 414. Specifically, the air inlet 411 is adapted to input compressed air 417. The pneumatic control valve 412 is connected between the air inlet 411 and the vortex tube body 413, and the pneumatic control valve 412 is adapted to control whether the compressed air 417 flows into the vortex tube body 413 by opening and closing. The vortex tube body 413 is adapted to separate the input compressed air 417 into cold air 415 and hot air 416. The temperature valve 414 is connected between the vortex tube body 413 and the air knife 42, and the temperature valve 414 is adapted to obtain the temperature of the cold air 415 generated by the vortex tube body 413. The air knife 42 has a first air outlet 31, which is adapted to discharge cold air 415 from the first air outlet 31 to form a cold airflow blowing towards the light-receiving surface 21. In this embodiment, the temperature of the cold airflow is 5°C to 20°C lower than the temperature of the input compressed air. In this embodiment, the structure of the backlight cooling unit 136 is the same as that of the light-receiving surface cooling unit 135. However, the air knife corresponding to the backlight cooling unit 136 has a second air outlet 32, thereby converting the cold air into a cold airflow blowing towards the backlight surface 22. The remaining identical structures will not be described again.

[0034] Continue to refer to Figure 1 and Figure 3 In this embodiment, the control module is adapted to activate the cooling module 134 when the real-time temperature is higher than a preset temperature range. In this embodiment, when the real-time temperature of a portion of the photovoltaic module exceeds the preset temperature range, the control module increases the flow rate of the input compressed air, thereby reducing the temperature of the generated cold airflow and improving the cooling effect on that portion of the area. When the real-time temperature of that portion of the area is within the preset temperature range, the control module closes the pneumatic control valve 412, thus ceasing the generation of cold airflow towards that portion of the area. It should be noted that the control module is an existing temperature control chip or temperature control system.

[0035] Continue to refer to Figure 1 The heat insulation chamber 14 is suitable for isolating heat transfer between the inside and outside of the heat insulation chamber 14. In this embodiment, the temperature detection module 131 of the light source 11, the support device 12, and the cooling device 13 are all located inside the heat insulation chamber 14. The vortex tubes of the light-incident cooling unit 135 and the backlight cooling unit 136 are suitable for discharging the generated hot air outside the heat insulation chamber 14, thereby effectively reducing the temperature inside the heat insulation chamber and further effectively controlling the real-time temperature of the photovoltaic module 200 within the preset temperature range.

[0036] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0037] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0038] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0039] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0040] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the essential spirit of this application will fall within the scope of the claims of this application.

Claims

1. A cooling device for photovoltaic modules, characterized in that, The cooling device is suitable for adjusting the temperature of the photovoltaic module during testing, and includes: A temperature detection module, adapted to acquire the real-time temperatures of the light-incident surface and the back-light surface of the photovoltaic module respectively during the test, wherein the light-incident surface and the back-light surface are opposite each other; and A cooling module, located near the edge of the photovoltaic module, is adapted to generate cold airflows that are blown towards the light-incident surface and the back-light surface respectively when the real-time temperature is higher than a preset temperature range. The cold airflow blowing toward the light-incident surface is parallel to the light-incident surface; and / or The cold airflow blowing toward the backlight surface is parallel to the backlight surface.

2. The cooling device for photovoltaic modules as described in claim 1, characterized in that, The temperature detection module includes: At least one non-contact temperature detection unit is disposed above the light-incident surface, and the non-contact temperature detection unit is adapted to acquire the real-time temperature of at least a portion of the light-incident surface.

3. The cooling device for photovoltaic modules as described in claim 1, characterized in that, The temperature detection module includes: At least one contact temperature detection unit is attached to the backlight surface, and the contact temperature detection unit is adapted to acquire the real-time temperature of at least a portion of the backlight surface.

4. The cooling device for photovoltaic modules as described in claim 1, characterized in that, The cooling module includes: At least one light-incident surface cooling unit, the light-incident surface cooling unit having a first air outlet extending along the edge of the light-incident surface, the first air outlet being close to the edge of the light-incident surface, the light-incident surface cooling unit being adapted to blow the generated cold airflow through the first air outlet toward at least a portion of the light-incident surface. At least one backlight cooling unit has a second air outlet extending along the edge of the backlight surface, the second air outlet being close to the edge of the backlight surface, and the backlight cooling unit is adapted to blow the generated cold airflow through the second air outlet toward at least a portion of the backlight surface.

5. The cooling device for photovoltaic modules as described in claim 4, characterized in that, The light-incident cooling unit includes a vortex tube, which is adapted to separate the compressed air input into the vortex tube into cold air and hot air, and send the cold air out through the first air outlet to form the cold airflow. and / or The backlight cooling unit includes a vortex tube, which is adapted to separate the compressed air input into the vortex tube into cold air and hot air, and send the cold air out through the second air outlet to form the cold airflow.

6. The cooling device for photovoltaic modules as described in claim 1, characterized in that, The preset temperature range is 23℃-27℃.

7. The cooling device for photovoltaic modules as described in claim 1, characterized in that, Also includes: A control module is provided, which is adapted to activate the refrigeration module when the real-time temperature is higher than the preset temperature range.

8. A testing system for photovoltaic modules, characterized in that, Suitable for performing steady-state IV testing or maximum power point tracking testing on photovoltaic modules, the testing system includes: The cooling device for a photovoltaic module as described in any one of claims 1-7 is adapted to cool the photovoltaic module that has heated up during steady-state IV testing or maximum power point tracking testing.

9. The photovoltaic module testing system as described in claim 8, characterized in that, Also includes: A light source suitable for illuminating the light-incident surface of the photovoltaic module; A support device adapted to contact the back surface of the photovoltaic module to fix and support the photovoltaic module and to make the incident light surface perpendicular to the illumination light of the light source.

10. The photovoltaic module testing system as described in claim 9, characterized in that, The support device includes at least one pin adapted to support and fix the backlight surface.

11. The photovoltaic module testing system as described in claim 9, characterized in that, Also includes: A heat insulation chamber, wherein the light source, the support device, and the temperature detection module of the cooling device are all located inside the heat insulation chamber; When the cooling module of the cooling device includes at least one light-incident cooling unit and at least one backlight cooling unit, and the light-incident cooling unit and / or the backlight cooling unit includes a vortex tube, the vortex tube is adapted to discharge the generated hot air to the outside of the heat insulation chamber.

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