Flow equalizing device and environmental test equipment

Abstract

The utility model relates to a current sharing device and environmental test equipment. The flow equalizing device comprises a mounting frame, a flow equalizing piece and an angle adjusting assembly. Ventilation openings are formed in the mounting frame. The flow equalizing piece is arranged at the ventilation opening and extends in the first direction. The angle adjusting assembly is installed on the installation frame and connected with the flow equalizing piece. The angle adjusting assembly is used for adjusting the angle of the flow equalizing piece. The flow equalizing piece plays a role in guiding the water vapor, so that the water vapor can be uniformly distributed in the test cavity, uniform contact between the water vapor and the to-be-tested photovoltaic module is ensured, and the accuracy of the environment test is ensured. The angle of the flow equalizing part can be adjusted through the angle adjusting assembly, so that water vapor guided by the flow equalizing part can be more uniformly distributed in the test cavity.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic module testing, and in particular to a current balancing device and environmental testing equipment. Background Art

[0002] During outdoor use, photovoltaic modules are subject to high temperatures and high humidity. If these modules are exposed to high temperatures and humidity for extended periods, the water permeability of the module's packaging material will increase, allowing moisture to enter the module and cause power degradation. Therefore, humidity and heat testing of photovoltaic modules is necessary using environmental testing equipment.

[0003] The environmental testing equipment consists of an environmental test chamber with an air inlet at the top and an air outlet at the bottom. During the test, the PV modules are placed inside the chamber from left to right. Water vapor enters the chamber through the air inlet and is then discharged through the air outlet. Because the water vapor flows in a single direction within the environmental test chamber, its distribution is uneven, and most of the water vapor does not effectively come into contact with the PV modules, resulting in skewed test results. Utility Model Content

[0004] Based on this, it is necessary to provide a current balancing device and environmental testing equipment to ensure the accuracy of the test results.

[0005] In a first aspect, the present application provides a current balancing device, comprising:

[0006] A mounting frame, the mounting frame being configured to be mounted in an environmental test chamber, the mounting frame being provided with a vent, the vent being configured to communicate with an air inlet of the environmental test chamber;

[0007] a flow balancing member, the flow balancing member being provided at the vent; and

[0008] An angle adjustment component is installed on the mounting bracket, the angle adjustment component is connected to the flow equalizer, and the angle adjustment component is used to adjust the angle of the flow equalizer.

[0009] In one embodiment, the angle adjustment components are provided on both sides of the mounting frame, and both ends of the flow equalizer in the length direction are connected to the angle adjustment components on both sides of the mounting frame in a one-to-one correspondence.

[0010] In one embodiment, the angle adjustment assembly includes a fixed body, a rotating shaft and a fixing member, the fixed body is installed on the mounting frame, the fixed body is provided with a plug hole and a through hole connected to the plug hole; the rotating shaft is installed at the end of the flow equalizer in the longitudinal direction, the rotating shaft is rotatably arranged in the plug hole, the fixing member is arranged in the through hole, and the fixing member is used to abut the outer peripheral surface of the rotating shaft to fix the rotating shaft relative to the fixed body.

[0011] In one embodiment, the fixed body is detachably mounted on the mounting bracket; a mounting portion is provided at one end of the rotating shaft, and the mounting portion is detachably mounted on the flow equalizing member.

[0012] In one embodiment, the cross section of the flow equalizing member is arc-shaped.

[0013] In one embodiment, there are at least two flow balancing members, all of which are arranged at the vents, all of which extend along a first direction, and all of which are spaced apart along a second direction, and the first direction intersects with the second direction.

[0014] In a second aspect, the present application further provides an environmental testing device, comprising:

[0015] An environmental test box, the environmental test box having a test chamber and an air inlet, the test chamber being used to place the photovoltaic module to be tested, the test chamber being connected to the air inlet; and

[0016] The above-mentioned flow balancing device is installed in the environmental test box, and the ventilation port is connected to the air inlet.

[0017] In one embodiment, the area of ​​the ventilation opening is larger than the area of ​​the air inlet.

[0018] In one embodiment, the environmental testing equipment further includes a water tank, an evaporator and a fan. The water tank, the evaporator and the fan are arranged outside the test chamber. The water tank is connected to the evaporator. The evaporator is used to evaporate water into water vapor. The fan is used to blow the water vapor into the test chamber through the air inlet.

[0019] In one embodiment, the environmental testing equipment further includes a temperature sensor and a humidity sensor, and the temperature sensor and the humidity sensor are disposed in the testing chamber.

[0020] During testing, water vapor is blown into the air inlet and then flows through the flow equalizer into the test chamber. The flow equalizer guides the water vapor, evenly distributing it within the test chamber and ensuring uniform contact between the water vapor and the photovoltaic modules under test, ensuring the accuracy of the environmental test. The angle of the flow equalizer can be adjusted using the angle adjustment assembly, ensuring a more even distribution of the water vapor within the test chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of an environmental testing device according to an embodiment of the present application.

[0022] Figure 2 Schematic diagram of the structure of a current balancing device according to an embodiment of the present application.

[0023] Figure 3 for Figure 2 The structural schematic diagram of the back side of the current balancing device is shown.

[0024] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0025] Figure 5 Schematic diagram of the structure of a current equalizing element according to an embodiment of the present application.

[0026] Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle.

[0027] Figure 7 This is a structural diagram of a fixed body according to an embodiment of the present application.

[0028] Description of Figure Numbers:

[0029] 10. Current balancing device; 11. Mounting frame; 111. Ventilation port; 113. Connecting ear; 1131. Connecting hole; 12. Current balancing member; 13. Angle adjustment assembly; 131. Fixed body; 1311. Through hole; 1312. Plug hole; 1313. First mounting hole; 132. Rotating shaft; 1321. Mounting portion; 133. Fixing member; 134. First mounting member; 135. Second mounting member; 20. Environmental test chamber; 21. Test chamber; 22. Air inlet; 30. PV module to be tested. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] See Figure 1 An environmental testing apparatus provided in one embodiment of the present application includes an environmental testing chamber 20. The environmental testing chamber 20 is provided with a test chamber 21 and an air inlet 22. The test chamber 21 is used to place the photovoltaic module 30 to be tested, and the test chamber 21 is connected to the air inlet 22. Optionally, the air inlet 22 is provided at the upper portion of the environmental testing chamber 20.

[0032] Furthermore, the environmental testing equipment also includes a water tank, an evaporator, and a fan. The water tank, evaporator, and fan are located outside the test chamber 21. The water tank is connected to the evaporator, which evaporates water into water vapor. The fan blows the water vapor into the test chamber 21 through the air inlet 22.

[0033] During the test, the photovoltaic module 30 under test is placed in the test chamber 21. Water in the water tank flows into the evaporator, where it evaporates into water vapor. The fan is activated, blowing the water vapor into the test chamber 21 through the air inlet 22. The water vapor liquefies within the test chamber 21, releasing heat to control the temperature of the test chamber 21. Simultaneously, the flow of water vapor within the test chamber 21 controls the humidity of the test chamber 21 by controlling the amount of water vapor. This simulates a hot and humid environment within the test chamber 21, simulating the ability of the photovoltaic module 30 under test to withstand long-term moisture penetration.

[0034] Optionally, the test environment temperature may be 85°C ± 2°C, the test environment humidity may be 85% ± 5%, and the test duration may be 1000h ± 48h.

[0035] In one embodiment, see Figure 1 The environmental testing equipment also includes a flow equalizer 10. This flow equalizer 10 is located within the test chamber 21 and corresponds to the air inlet 22. When the fan is activated, it blows the water vapor toward the air inlet 22. The water vapor then flows evenly through the flow equalizer 10 into the test chamber 21, distributing the water vapor evenly within the chamber 21. This ensures uniform contact between the water vapor and the PV modules 30 under test, ensuring the accuracy of the environmental testing structure.

[0036] In one embodiment, see Figure 2 and Figure 3The flow equalizing device 10 comprises a mounting frame 11 and flow equalizing members 12. The mounting frame 11 is installed in the environmental test chamber 20, and the mounting frame 11 is provided with air vents 111 for communication with the air inlet 22, and the flow equalizing members 12 are arranged in the air vents 111. Optionally, the flow equalizing members 12 are flow equalizing blades, and the cross-sectional shape of the flow equalizing blades is arc-shaped.

[0037] Optionally, referring to Figure 2 and Figure 3 , the flow equalizing members 12 are provided with at least two, all of the flow equalizing members 12 are arranged in the air vents 111, all of the flow equalizing members 12 extend along a first direction, and all of the flow equalizing members 12 are arranged in a second direction. The first direction intersects the second direction, and optionally, the first direction is perpendicular to the second direction. For the convenience of understanding, S1 represents the first direction, and S2 represents the second direction.

[0038] During the test, the water vapor is blown to the air inlet 22 by the fan, and the water vapor flows into the test cavity 21 after passing through the flow equalizing members 12. In this way, the flow equalizing members 12 play a role in guiding the water vapor, so that the water vapor can be uniformly distributed in the test cavity 21, ensuring that the water vapor uniformly contacts the photovoltaic module 30 to be tested, and ensuring the accuracy of the environmental test.

[0039] Further, referring to Figure 2 and Figure 3 , the mounting frame 11 is provided with a plurality of connecting ears 113, and the connecting ears 113 are provided with connecting holes 1131. During installation, connecting members are arranged in the connecting holes 1131, and the connecting members are used to install the mounting frame 11 in the environmental test chamber 20.

[0040] In one embodiment, referring to Figure 3 , the flow equalizing device 10 further comprises an angle adjusting assembly 13. The angle adjusting assembly 13 is installed on the mounting frame 11, the angle adjusting assembly 13 is connected with the flow equalizing members 12, and the angle adjusting assembly 13 is used to adjust the angle of the flow equalizing members 12. In this way, the angle of the flow equalizing members 12 can be adjusted through the angle adjusting assembly 13, so that the water vapor guided by the flow equalizing members 12 can be more uniformly distributed in the test cavity 21. At the same time, by adjusting the angle of the flow equalizing members 12, different test requirements such as air inlet speed and air inlet direction can be met.

[0041] In one embodiment, referring to Figure 3, angle adjustment assemblies 13 are provided on both sides of the mounting frame 11, and the two ends of the flow equalizer 12 in the longitudinal direction are connected to the angle adjustment assemblies 13 on both sides of the mounting frame 11 in a one-to-one correspondence. It can be understood that each flow equalizer 12 is provided with an angle adjustment assembly 13 at both ends along the first direction, and the flow equalizer 12 is mounted on the mounting frame 11 via the angle adjustment assembly 13. With this arrangement, each flow equalizer 12 can adjust its angle independently, that is, the angle adjustment of each flow equalizer 12 does not interfere with each other. This can adapt to different environmental test chambers 20, different air inlet speeds, etc., so that the water vapor distribution in the test chamber 21 is more uniform.

[0042] Of course, in other embodiments, the angle adjustment assembly 13 can also drive all current equalizers 12 to adjust their angles synchronously. Specifically, the current equalizer device 10 further includes a linkage assembly, to which all current equalizers 12 are connected, and the angle adjustment assembly 13 is connected to one of the current equalizers 12. By adjusting the angle adjustment assembly 13, the angle adjustment assembly 13 drives one of the current equalizers 12 to adjust its angle, and then, through the linkage assembly, drives all the current equalizers 12 to adjust their angles synchronously, thereby reducing the number of angle adjustment assemblies 13 provided and improving the consistency and efficiency of the adjustment of the current equalizers 12.

[0043] In one embodiment, see Figure 3 and Figure 4 The angle adjustment assembly 13 includes a fixed body 131, a rotating shaft 132, and a fixing member 133. The fixed body 131 is mounted on the mounting frame 11 and is provided with a plug hole 1312. The rotating shaft 132 is mounted on the end of the flow equalizer 12 along the first direction and is rotatably disposed in the plug hole 1312. The fixed body 131 is provided with a through hole 1311 that communicates with the plug hole 1312. The fixing member 133 is disposed in the through hole 1311 and is used to abut the outer circumferential surface of the rotating shaft 132 to fix the rotating shaft 132 relative to the fixed body 131.

[0044] To adjust the angle of the flow equalizer 12, rotate the fixing member 133 to separate it from the rotating shaft 132, allowing the rotating shaft 132 to rotate within the fixed body 131. Once the flow equalizer 12 is adjusted to the desired angle, rotate the fixing member 133 in the opposite direction until it abuts against the outer circumference of the rotating shaft 132, thereby keeping the flow equalizer 12 stationary. This arrangement facilitates adjustment.

[0045] In one embodiment, see Figure 4 The fixing body 131 is detachably mounted on the mounting frame 11. In this way, the fixing body 131 can be removed from the mounting frame 11, making it convenient to replace the fixing body 131.

[0046] Optionally, see Figure 4 and Figure 7The fixing body 131 is provided with a first mounting hole 1313, the mounting frame 11 is provided with a second mounting hole communicating with the first mounting hole 1313, and a first mounting member 134 is provided in the first mounting hole 1313 and the second mounting hole. The first mounting member 134 can be a bolt.

[0047] Of course, in other embodiments, the fixing body 131 is provided with a clamping post, the mounting frame 11 is provided with a clamping slot, and the clamping post is disposed in the clamping slot.

[0048] In one embodiment, see Figure 5 and Figure 6 One end of the rotating shaft 132 is provided with a mounting portion 1321, which is removably mounted to the flow equalizer 12. Optionally, the mounting portion 1321 is mounted on the concave surface of the arc-shaped flow equalizer 12. The provision of the mounting portion 1321 facilitates mounting the rotating shaft 132 on the flow equalizer 12. Furthermore, since the mounting portion 1321 is removably mounted to the flow equalizer 12, the rotating shaft 132 can be removed from the flow equalizer 12, making replacement of the rotating shaft 132 easier.

[0049] Optionally, the mounting portion 1321 is provided with a third mounting hole, the flow equalizer 12 is provided with a fourth mounting hole communicating with the third mounting hole, and the third mounting hole and the fourth mounting hole are provided with a second mounting member 135. The second mounting member 135 can be a bolt.

[0050] In one embodiment, the size of the vent 111 is larger than the size of the air inlet 22. It is understood that the ventilation area of ​​the vent 111 is larger than the air inlet area of ​​the air inlet 22. This can increase the flow distribution area, allowing water vapor to enter the test chamber 21 more evenly.

[0051] In one embodiment, the environmental testing equipment further includes a temperature sensor and a humidity sensor. These sensors are located within the test chamber 21. The temperature sensor can detect the temperature within the test chamber 21, allowing testers to monitor the humidity within the chamber in real time. The humidity sensor can also detect the humidity within the chamber 21, allowing testers to monitor the humidity within the chamber in real time.

[0052] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0054] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0055] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0057] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A current balancing device (10), characterized in that: include: a mounting frame (11), the mounting frame (11) being used to be mounted in an environmental test box (20), the mounting frame (11) being provided with a vent (111), the vent (111) being used to communicate with an air inlet (22) of the environmental test box (20); a flow balancing member (12), the flow balancing member (12) being arranged at the vent (111); and An angle adjustment component (13), the angle adjustment component (13) is mounted on the mounting frame (11), the angle adjustment component (13) is connected to the flow equalizer (12), and the angle adjustment component (13) is used to adjust the angle of the flow equalizer (12).

2. The current balancing device (10) according to claim 1, characterized in that: The angle adjustment components (13) are provided on both sides of the mounting frame (11), and both ends of the flow equalizer (12) in the length direction are connected to the angle adjustment components (13) on both sides of the mounting frame (11) in a one-to-one correspondence.

3. The current balancing device (10) according to claim 1, characterized in that: The angle adjustment assembly (13) comprises a fixed body (131), a rotating shaft (132) and a fixing member (133); the fixed body (131) is mounted on the mounting frame (11); the fixed body (131) is provided with a plug hole (1312) and a through hole (1311) communicating with the plug hole (1312); the rotating shaft (132) is mounted on the end portion of the flow equalizer (12) in the longitudinal direction; the rotating shaft (132) is rotatably disposed in the plug hole (1312); the fixing member (133) is disposed in the through hole (1311); the fixing member (133) is used to abut against the outer peripheral surface of the rotating shaft (132) so that the rotating shaft (132) is fixed relative to the fixed body (131).

4. The current balancing device (10) according to claim 3, characterized in that: One end of the rotating shaft (132) is provided with a mounting portion (1321), and the mounting portion (1321) is detachably mounted on the flow equalizing member (12).

5. The current balancing device (10) according to any one of claims 1 to 4, characterized in that: The flow balancing member (12) is a flow balancing blade, and the cross-sectional shape of the flow balancing blade is an arc.

6. The current balancing device (10) according to any one of claims 1 to 4, characterized in that: At least two of the flow balancing members (12) are provided, all of the flow balancing members (12) are provided at the ventilation opening (111), all of the flow balancing members (12) extend along a first direction, and all of the flow balancing members (12) are spaced apart along a second direction, wherein the first direction intersects the second direction.

7. An environmental testing device, characterized in that: include: An environmental test box (20), the environmental test box (20) being provided with a test chamber (21) and an air inlet (22), the test chamber (21) being used to place a photovoltaic module (30) to be tested, the test chamber (21) being in communication with the air inlet (22); and The flow balancing device (10) according to any one of claims 1 to 6, wherein the flow balancing device (10) is installed in the environmental test chamber (20), and the vent (111) is connected to the air inlet (22).

8. The environmental testing equipment according to claim 7, characterized in that: The area of ​​the ventilation opening (111) is larger than the area of ​​the air inlet (22).

9. The environmental testing equipment according to claim 7, characterized in that: The environmental test equipment further comprises a water tank, an evaporator and a fan. The water tank, the evaporator and the fan are arranged outside the test chamber (21). The water tank is connected to the evaporator. The evaporator is used to evaporate water into water vapor. The fan is used to blow the water vapor into the test chamber (21) through the air inlet (22).

10. The environmental testing equipment according to claim 7, characterized in that: The environmental testing equipment further comprises a temperature sensor and a humidity sensor, and the temperature sensor and the humidity sensor are arranged in the testing chamber (21).

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