High-voltage pulse test box for photovoltaic module

Abstract

The utility model relates to a high-voltage pulse test box for a photovoltaic module, and the box comprises a test box, a high-voltage pulse generator is disposed in the test box, a first air bag and a second air bag are disposed in the test box, the opposite surfaces of the first air bag and the second air bag are detachably provided with conductive sheets, and an inflation assembly is disposed in the test box. When the first air bag and the second air bag are inflated and expanded, the conducting strips are tightly attached to the opposite surfaces of the photovoltaic module, the first air bag and the second air bag are inflated and deflated through the inflation assembly, and connection and disconnection of the conducting strips and the photovoltaic module are achieved. The photovoltaic module testing device has the effect of improving the photovoltaic module testing efficiency.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module processing technology, and in particular to a high-voltage pulse test box for photovoltaic modules. Background Technology

[0002] Photovoltaic modules are the core components that convert solar energy into electrical energy. In actual use, photovoltaic modules will face various harsh environmental conditions, such as lightning strikes and switching surges caused by low-voltage electrical switches. In order to ensure the safety performance of photovoltaic modules under these conditions, it is necessary to conduct pulse voltage tests on photovoltaic modules. The pulse voltage test uses a sufficiently high power supply to apply a short pulse to the photovoltaic module under test to verify the insulation performance of the photovoltaic module and to check whether the photovoltaic module can withstand overvoltage and high-low voltage transitions from the atmosphere during future operation.

[0003] Currently, when conducting pulse voltage tests, operators need to attach conductive foil to the outer surface of the photovoltaic module, then connect the pulse generator's wires to the photovoltaic module covered with conductive foil, and simultaneously use an oscilloscope to monitor the pulse voltage signal.

[0004] However, when manually applying conductive foil, the conductive foil needs to be cut to the appropriate size according to the size of the photovoltaic module. After the test is completed, the operator also needs to remove the conductive foil, and during the removal process, it is necessary to ensure that the surface of the photovoltaic module is clean to avoid the residue of conductive foil. This consumes a lot of testing time, resulting in low testing efficiency of photovoltaic modules and has obvious shortcomings. Utility Model Content

[0005] To improve testing efficiency, this application provides a high-voltage pulse test chamber for photovoltaic modules.

[0006] The high-voltage pulse test chamber for photovoltaic modules provided in this application adopts the following technical solution:

[0007] A high-voltage pulse test chamber for photovoltaic modules includes a test chamber with a partition inside. The upper and lower ends of the partition and the inner peripheral wall of the test chamber enclose a test area and an equipment area. A high-voltage pulse generator is installed in the equipment area. A support plate is installed above the partition, and a first airbag is installed on the support plate. A mounting plate is installed in the test area, and a second airbag is installed on the surface of the mounting plate facing the support plate. Conductive sheets are detachably installed on the opposing surfaces of the first and second airbags. An inflation assembly is installed inside the test chamber. When the first and second airbags are inflated, the conductive sheets are tightly attached to the opposing surfaces of the photovoltaic module. Both the first and second airbags are elastic airbags.

[0008] By adopting the above technical solution, the operator places the photovoltaic module under test on the support plate, and then starts the inflation component. The inflation component inflates the first and second airbags, which expand and gradually adhere to the upper and lower surfaces of the photovoltaic module. At this time, the conductive sheet is in close contact with the photovoltaic module, forming a good conductive connection. Then, the high-voltage pulse generator is started for testing. After the test is completed, the operator operates the inflation component to deflate, and the first and second airbags contract and move the conductive sheet away from the photovoltaic module. The operator then removes the photovoltaic module from the test box, and the test process ends. The automatic application and removal of the conductive sheet is achieved through the inflation component, the first airbag, and the second airbag. The entire testing process does not require complicated manual application and removal of conductive foil, thus improving the testing efficiency of photovoltaic modules.

[0009] Optionally, both the first and second airbags have multiple partitions inside, the partitions being made of elastic material. The multiple partitions divide the interior of the first and second airbags into multiple air chambers. The inflation assembly includes an air pump mounted on the test chamber. The air pump's outlet is connected to a main air pipe. A first air pipe and a second air pipe are connected to the main air pipe. The first air pipe is connected to the first airbag through multiple branch air pipes, and the second air pipe is connected to the second airbag through multiple branch air pipes. Each branch air pipe corresponds to one of the multiple air chambers, and each branch air pipe is connected to its corresponding air chamber.

[0010] By adopting the above technical solution, during inflation, the air pump starts and draws external gas into the main air pipe. The gas in the main air pipe flows sequentially through the first and second air pipes, and finally flows precisely into each air chamber through the distribution pipe. Due to the presence of the partition, multiple air chambers cooperate with each other and receive gas independently. This setting allows the first and second air chambers to expand evenly during inflation, avoiding the situation where the gas concentrates in certain areas due to irregular flow, thus preventing the air chambers from over-expanding locally. The uniform expansion of the air chambers ensures that the conductive sheet adheres more tightly and evenly to the surface of the photovoltaic module, thereby ensuring the stability of conductive contact during testing and improving testing quality and efficiency.

[0011] Optionally, the support plate is provided with a clamping assembly, which includes clamping plates slidably connected to opposite sides of the support plate. Slide grooves are provided on both opposite sides of the support plate, and guide posts are provided in both slide grooves. Both clamping plates are slidably connected to the guide posts, and first springs are sleeved on opposite ends of the two guide posts. One end of the first spring is provided on the surface of the guide post, and the other end is provided on the clamping plate. When the photovoltaic module is clamped, the first spring is in a compressed state.

[0012] By adopting the above technical solution, when the photovoltaic module is placed above the support plate, the photovoltaic module pushes the clamping plate to slide along the guide post in the groove. At this time, the first spring is compressed, and the elastic force generated by the deformation of the first spring pushes the clamping plate to clamp the photovoltaic module. In this way, the photovoltaic module is fixed on the support plate, avoiding the displacement of the photovoltaic module caused by the compression of the photovoltaic module during the expansion of the first and second airbags. This ensures that the conductive sheet and the surface of the photovoltaic module always maintain a good contact state, and guarantees the stability and accuracy of the pulse voltage test.

[0013] Optionally, the test chamber has a placement slot, the support plate is slidably connected in the placement slot, the two opposite ends of the partition plate have a drive slot and a guide slot respectively, a screw is rotatably connected in the drive slot, a guide rod is provided in the guide slot, one end of the support plate is threaded to the screw, and the other end is slidably connected to the guide post, the test chamber is provided with a drive motor to drive the screw to rotate, and the test chamber is hinged with a door to cover the placement slot.

[0014] By adopting the above technical solution, during testing, the operator opens the chamber door and starts the drive motor. The drive motor drives the screw to rotate forward, and the rotation of the screw causes the carrier plate to slide along the placement groove to the outside of the test chamber. The operator then places the photovoltaic module on the carrier plate by clamping the module. Subsequently, the drive motor is reversed, and the drive motor, through the screw, moves the photovoltaic module into the test chamber for testing. This setup enables the carrier plate to move back and forth along the placement groove, making it convenient for workers to place photovoltaic modules on the carrier plate. Compared with manual handling of photovoltaic modules, this method is more efficient and reduces the possibility of photovoltaic modules shaking or colliding due to manual operation, thereby further improving testing efficiency.

[0015] Optionally, the test chamber has a sliding groove that slides with the mounting plate. The mounting plate is fixed inside the sliding groove by a fixing component. The fixing component includes two pin plates that slide on the outer surface of the mounting plate. The mounting plate has a moving groove that slides with the two pin plates. The outer surface of the test chamber is provided with pin sleeves that correspond one-to-one with the two pin plates. The pin plates engage with the corresponding pin sleeves. The mounting plate is provided with a driving component that drives the pin plates to move along the moving groove.

[0016] By adopting the above technical solution, when the conductive sheet needs to be replaced due to prolonged use, the worker starts the drive motor to move the placement plate out of the test box. At the same time, the drive component drives the pin plate to separate from the pin sleeve, and the worker pulls the mounting plate out of the test box. At this time, the worker can easily replace the conductive sheet that has moved out of the test box. After the replacement is completed, the drive motor reverses to drive the placement plate back into the test box. At the same time, the worker slides the mounting plate into the sliding groove. Finally, the drive component drives the pin plate to insert into the pin sleeve, thereby fixing the mounting plate inside the test box. This setting realizes convenient replacement of the conductive sheet. The entire replacement process does not require the worker to operate in the confined space inside the test box, improving the convenience of replacing the conductive sheet.

[0017] Optionally, the drive assembly includes a gear rotatably connected to the outer surface of the mounting plate. Rack plates are meshed on opposite sides of the gear. Two rack plates are correspondingly arranged with two pin plates. The rack plates are slidably connected in the moving groove and fixedly connected to the corresponding pin plates. A second spring is provided in each moving groove. One end of the second spring is provided on the inner side wall of the moving groove, and the other end is provided on the rack plate. When the second spring is in its natural state, the pin plate is engaged in the pin sleeve.

[0018] By adopting the above technical solution, when the mounting plate needs to be removed, the worker rotates the gear clockwise. The rotation of the gear causes the two rack plates to slide towards the gear, compressing the second spring. The movement of the rack plates causes the pin plate to disengage from the pin sleeve, releasing the mounting plate from its fixed state. At this time, the mounting plate can be pulled out of the test box. After the conductive sheet is replaced, the worker pushes the mounting plate into the test box, then rotates the gear clockwise to keep the pin plate disengaged from the pin sleeve. When the pin plate moves to be aligned with the insertion sleeve, the worker releases the gear, the second spring resets, and pushes the rack plate towards the insertion sleeve. The rack plate then causes the pin plate to re-insert into the pin sleeve, thus securing the mounting plate. This design enables convenient insertion and removal of the pin plate, making the replacement of the conductive sheet more efficient.

[0019] Optionally, the test box is provided with a viewing window.

[0020] By adopting the above technical solution, the viewing window allows operators to directly observe the inside of the test chamber without opening the chamber door, avoiding inaccurate test results or damage to the test equipment and photovoltaic modules due to failure to detect problems in time, thus ensuring the smooth progress of the test and improving test efficiency.

[0021] Optionally, the inner wall of the test chamber is coated with an electromagnetic shielding coating.

[0022] By adopting the above technical solution, the electromagnetic shielding coating can reduce the adverse effects of external electromagnetic interference on the testing process, and at the same time prevent electromagnetic interference generated by the high voltage pulse generator from leaking to the outside of the test chamber.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] This application utilizes a first airbag, a second airbag, and an inflation component. During testing, the inflation component inflates the first and second airbags, causing them to expand and gradually adhere to the upper and lower surfaces of the photovoltaic module. At this point, the conductive sheet is in close contact with the photovoltaic module, forming a conductive connection. After testing, the inflation component deflates, causing the first and second airbags to contract and move the conductive sheet away from the photovoltaic module. The automatic application and detachment of the conductive sheet is achieved through the inflation component, the first airbag, and the second airbag. The entire testing process eliminates the need for complex manual application and removal of the conductive sheet, thus improving the testing efficiency of the photovoltaic module.

[0025] This application sets up multiple spacers. Due to the presence of spacers, multiple air chambers cooperate with each other and receive gas independently. This arrangement allows the first and second air chambers to expand evenly during inflation, avoiding the situation where the gas concentrates in certain areas due to irregular flow, thus preventing the air chambers from over-expanding locally. The uniform expansion of the air chambers ensures that the conductive sheet adheres more tightly and evenly to the surface of the photovoltaic module, thereby ensuring the stability of conductive contact during testing and improving test quality and efficiency.

[0026] This application uses a sliding connection between the mounting plate and the support plate inside the test chamber. When an oxide layer appears on the conductive sheet, the worker slides the support plate out of the test chamber using a screw, and simultaneously pulls the mounting plate out of the sliding groove using a drive assembly. This allows the two conductive sheets to move to the outside of the test chamber, making it easier for the worker to replace the conductive sheets from outside the test chamber. This eliminates the need for the worker to operate in the confined space inside the test chamber, thus improving the convenience of replacing the conductive sheets. Attached Figure Description

[0027] Figure 1 This is a structural diagram of this application.

[0028] Figure 2 This is a cross-sectional view of the first airbag and the second airbag in the embodiments of this application.

[0029] Figure 3 This is a cross-sectional view of the support plate and the partition plate in the embodiments of this application.

[0030] Figure 4 This is a schematic diagram of the structure of the driving component and the fixing component in the embodiments of this application.

[0031] Explanation of reference numerals in the attached drawings: 01, High-voltage pulse generator; 02, Drive motor; 03, Conductive sheet; 04, Photovoltaic module; 1, Test box; 101, Test area; 102, Equipment area; 2, Partition; 21, Drive slot; 211, Screw; 22, Guide slot; 221, Guide rod; 3, Placement slot; 31, Box door; 4, Bearing plate; 41, Slide groove; 5, Clamping assembly; 51, Clamping plate; 52, Guide column; 53, First spring; 6, First airbag; 7, Mounting plate; 71, Moving slot; 8, Second airbag; 9, Inflation assembly; 10, Partition; 11, Air chamber; 12, Sliding slot; 13, Fixing assembly; 131, Pin plate; 132, Pin sleeve; 15, Drive assembly; 151, Gear; 152, Rack plate; 153, Second spring. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a high-voltage pulse test box for photovoltaic modules.

[0034] Reference Figure 1 and Figure 2 A high-voltage pulse test chamber for photovoltaic modules includes a test chamber 1. A partition 2 is fixedly installed inside the test chamber 1. The upper and lower end faces of the partition 2 and the inner peripheral side wall of the test chamber 1 enclose a test area 101 and an equipment area 102. A high-voltage pulse generator 01 for generating high-voltage pulses is fixedly installed in the equipment area 102. The inner side wall of the test chamber 1 is coated with an electromagnetic shielding coating. In this embodiment, the electromagnetic shielding coating is a nickel coating. The electromagnetic shielding coating can effectively reduce the adverse effects of external electromagnetic interference on the test process, and at the same time prevent the electromagnetic interference generated by the high-voltage pulse generator 01 from leaking to the outside of the test chamber 1.

[0035] Reference Figures 1 to 3 The test chamber 1 has viewing windows (not shown in the figure) on its opposite outer surfaces, allowing operators to observe the interior of the test chamber 1. The test chamber 1 has a placement slot 3, within which a support plate 4 is slidably connected. A clamping assembly 5 for holding the photovoltaic module 04 is located above the support plate 4. The partition 2 has a drive slot 21 and a guide slot 22 at opposite ends, with their lengths parallel to the movement direction of the support plate 4. A screw 211 is rotatably connected to the drive slot 21, and a guide rod 221 is fixedly connected to the guide slot 22. One end of the support plate 4 is threaded onto the screw 211, and the other end is slidably connected to the guide rod 221. A drive motor 02 is fixedly mounted on the outer surface of the test chamber 1, with its output shaft coaxially fixedly connected to the screw 211. A door 31 for shielding the placement slot 3 is hinged to the outer surface of the test chamber 1.

[0036] Reference Figures 1 to 3 The clamping assembly 5 includes clamping plates 51 slidably connected to opposite sides of the support plate 4. The length direction of the clamping plates 51 is parallel to the screw 211. Slide grooves 41 are provided on opposite sides of the support plate 4. The length direction of the slide grooves 41 is perpendicular to the length direction of the clamping plates 51. Guide posts 52 are fixedly connected in both slide grooves 41. The opposite ends of the two clamping plates 51 are slidably connected to the outer surfaces of the two guide posts 52. A first spring 53 is sleeved on the opposite ends of the two guide posts 52. One end of the first spring 53 is fixedly connected to the surface of the guide post 52, and the other end is fixedly connected to the clamping plate 51 on the same side. When the photovoltaic module 04 is clamped, the first spring 53 is in a compressed state.

[0037] During testing, the operator opens the door 31 and then starts the drive motor 02. The drive motor 02 drives the screw 211 to rotate in the forward direction. The rotation of the screw 211 causes the support plate 4 to slide along the placement groove 3 to the outside of the test box 1. At this time, the operator moves the photovoltaic module 04 to the surface of the support plate 4. The operator uses the clamping component 5 to place the photovoltaic module 04 on the support plate 4. During the placement process, the photovoltaic module 04 pushes the clamping plate 51 to move along the guide post 52 toward the first spring 53. The first spring 53 is compressed. The elastic force generated by the deformation of the first spring 53 pushes the clamping plate 51 to clamp the photovoltaic module 04, thus fixing the photovoltaic module 04 on the support plate 4.

[0038] After the device is fixed in place, the operator reverses the drive motor 02. The drive motor 02 drives the photovoltaic module 04 into the test chamber 1 through the screw 211 for testing. This setup enables the carrier plate 4 to move back and forth along the placement groove 3, making it easier for workers to place the photovoltaic module 04 on the carrier plate 4. This is more efficient than manually handling the photovoltaic module 04 and reduces the possibility of shaking or collision of the photovoltaic module 04 due to manual operation, thereby further improving testing efficiency.

[0039] Reference Figure 2 A first airbag 6 is fixedly connected to the upper surface of the support plate 4. An installation plate 7 is provided on the inner side wall of the test area 101. A second airbag 8 is provided on the surface of the installation plate 7 facing the support plate 4. Conductive sheets 03 are detachably connected to the opposite surfaces of the first airbag 6 and the second airbag 8. The conductive sheets 03 are connected to the high-voltage pulse light generator through wires. In this embodiment, the detachable connection method is through Velcro. The Velcro material has good conductivity and electrical resistance. An inflation component 9 is provided inside the test chamber 1. When the first airbag 6 and the second airbag 8 are inflated, the conductive sheets 03 tightly cover the opposite surfaces of the photovoltaic module 04. Both the first airbag 6 and the second airbag 8 are elastic airbags.

[0040] Reference Figure 2The inflation assembly 9 includes an air pump fixedly installed on the top of the test chamber 1. The air pump's outlet is connected to a main air pipe. The main air pipe is vertically arranged and extends downward along the outer surface of the test chamber 1. A first air pipe and a second air pipe are connected to the main air pipe. The first air pipe is connected to the first airbag 6, and the second air pipe is connected to the second airbag 8.

[0041] After the photovoltaic module 04 enters the test chamber 1, the air pump starts and draws outside gas into the main air pipe. The gas in the main air pipe flows through the first air pipe and the second air pipe in sequence, and finally flows into the first air bladder 6 and the second air bladder 8. The first air bladder 6 and the second air bladder 8 inflate and gradually adhere to the upper and lower surfaces of the photovoltaic module 04. At this time, the conductive sheet 03 is in close contact with the photovoltaic module 04, forming a good conductive connection. Then, the high-voltage pulse generator 01 is started for testing. After the test is completed, the operator operates the inflation component 9 to deflate the air. The first air bladder 6 and the second air bladder 8 contract and move the conductive sheet 03 away from the photovoltaic module 04. Finally, the operator opens the chamber door 31 and starts the drive motor 02. The drive motor 02 drives the support plate 4 to move out of the test chamber 1 through the screw 211. The operator removes the photovoltaic module 04 from the support plate 4, and the test process ends. The automatic application and removal of the conductive sheet 03 is achieved through the inflation component 9, the first air bladder 6 and the second air bladder 8. The entire test process does not require complicated manual application and removal of conductive foil, thus improving the testing efficiency of the photovoltaic module 04.

[0042] Reference Figure 2 The first airbag 6 and the second airbag 8 are each provided with multiple partitions 10. The partitions 10 are evenly distributed at equal intervals. The partitions 10 are made of elastic material to adapt to the deformation of the first airbag 6 and the second airbag 8. The multiple partitions 10 divide the interior of the first airbag 6 and the second airbag 8 into multiple air chambers 11. The first air tube is connected to a branch air tube corresponding to the multiple air chambers 11 inside the first airbag 6. The second air tube is connected to a branch air tube corresponding to the multiple air chambers 11 inside the second airbag 8. The branch air tube is connected to the corresponding air chamber 11. The branch air tube is a corrugated tube to adapt to the movement of the support plate 4.

[0043] During inflation, the air pump starts and draws outside gas into the main air pipe. The gas in the main air pipe flows through the first and second air pipes in sequence, and finally flows precisely into each air chamber 11 through the distribution pipe. Due to the presence of the partition 10, the multiple air chambers 11 receive gas in a coordinated yet independent manner. This arrangement allows the first airbag 6 and the second airbag 8 to expand evenly during inflation, avoiding the situation where the gas concentrates in certain areas due to irregular flow, thus preventing the airbag from expanding excessively in certain areas. The uniform expansion of the airbags ensures that the conductive sheet 03 adheres more tightly and evenly to the surface of the photovoltaic module 04, thereby ensuring the stability of the conductive contact during testing and improving the test quality and efficiency.

[0044] Reference Figure 2 and Figure 4 As the usage time increases, the conductive sheet 03 will undergo oxidation. The appearance of the oxide layer will reduce the conductivity of the conductive sheet 03, thereby affecting the accuracy of the test.

[0045] To solve this problem, the test chamber 1 is provided with a sliding groove 12 that slides with the mounting plate 7. The mounting plate 7 is fixed inside the sliding groove 12 by a fixing component 13. The fixing component 13 includes two pin plates 131 that are slidably connected to the outer surface of the mounting plate 7. The two pin plates 131 are arranged opposite to each other. The mounting plate 7 is provided with a moving groove 71 that slides with the two pin plates 131. The outer surface of the test chamber 1 is fixedly connected with pin sleeves 132 that correspond one-to-one with the two pin plates 131. The two pin sleeves 132 are respectively arranged on both sides of the opening of the sliding groove 12. The pin plates 131 are engaged with the corresponding pin sleeves 132. The mounting plate 7 is provided with a driving component 15 that drives the pin plates 131 to move along the moving rod groove.

[0046] Reference Figure 2 and Figure 4 The drive assembly 15 includes a gear 151 rotatably connected to the outer surface of the mounting plate 7. A handle (not shown in the figure) is coaxially fixedly connected to the gear 151. On opposite sides of the gear 151, there are rack plates 152 that mesh with each of the two pin plates 131. The rack plates 152 are slidably connected in the moving groove 71 and fixedly connected to the corresponding pin plates 131. Each moving groove 71 is provided with a second spring 153. One end of the second spring 153 is fixedly connected to the inner side wall of the moving groove 71, and the other end is fixedly connected to the rack plate 152. When the second spring 153 is in its natural state, the pin plate 131 is engaged in the pin sleeve 132.

[0047] When the conductive sheet 03 on the first airbag 6 needs to be replaced, the worker opens the box door 31 and starts the drive motor 02. The drive motor 02 drives the placement plate to move out of the test box 1 through the screw 211. Then the worker replaces the conductive sheet 03 on the surface of the placement plate. After the replacement is completed, the drive motor 02 is reversed to drive the placement plate into the test box 1.

[0048] When the conductive sheet 03 on the second airbag 8 needs to be replaced, the worker rotates the gear 151 clockwise. The rotation of the gear 151 causes the two rack plates 152 to slide towards the gear 151. The rack plates 152 compress the second spring 153. The movement of the rack plates 152 causes the pin plate 131 to disengage from the pin sleeve 132, releasing the fixed state of the mounting plate 7. The worker then pulls the mounting plate 7 out of the test box 1 and replaces the conductive sheet 03 on the mounting plate 7. After replacement, the worker pushes the mounting plate 7 into the test box 1 and then rotates the gear clockwise. 151 keeps the pin plate 131 detached from the pin sleeve 132. When the pin plate 131 moves to be directly opposite the insertion sleeve, the operation on the gear 151 is released, and the second spring 153 resets and pushes the rack plate 152 toward the insertion sleeve. The rack plate 152 drives the pin plate 131 to re-insert into the pin sleeve 132, thus fixing the mounting plate 7. This setting enables convenient replacement of the conductive sheet 03. The entire replacement process does not require workers to operate in the confined space inside the test chamber 1, improving the convenience of replacing the conductive sheet 03.

[0049] The implementation principle of a high-voltage pulse test chamber for photovoltaic modules according to an embodiment of this application is as follows: After the photovoltaic module 04 enters the test chamber 1, the air pump is started and draws external gas into the main air pipe. The gas in the main air pipe flows sequentially through the first air pipe and the second air pipe, and finally flows into the first air bladder 6 and the second air bladder 8. The first air bladder 6 and the second air bladder 8 inflate and gradually adhere to the upper and lower surfaces of the photovoltaic module 04. At this time, the conductive sheet 03 is in close contact with the photovoltaic module 04, forming a good conductive connection. Then, the high-voltage pulse generator 01 is started for testing. After the test is completed, the operation... The operator deflates the inflation component 9, causing the first airbag 6 and the second airbag 8 to contract and move the conductive sheet 03 away from the photovoltaic module 04. Finally, the operator opens the box door 31 and starts the drive motor 02. The drive motor 02 moves the support plate 4 out of the test box 1 via the screw 211. The operator removes the photovoltaic module 04 from the support plate 4, and the test process ends. The automatic application and removal of the conductive sheet 03 is achieved through the inflation component 9, the first airbag 6, and the second airbag 8. The entire test process does not require complicated manual application and removal of conductive foil, thus improving the testing efficiency of the photovoltaic module.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-voltage pulse test box for a photovoltaic module, comprising a test box (1), a partition (2) is arranged in the test box (1), the upper and lower end faces of the partition (2) and the inner circumferential side wall of the test box (1) form a test area (101) and a device area (102), and a high-voltage pulse generator (01) is arranged in the device area (102), characterized in that, A support plate (4) is provided above the partition (2), and a first airbag (6) is provided on the support plate (4). An installation plate (7) is provided in the test area (101). A second airbag (8) is provided on the surface of the installation plate (7) facing the support plate (4). A conductive sheet (03) is detachably provided on the opposing surfaces of the first airbag (6) and the second airbag (8). An inflation component (9) is provided in the test box (1). When the first airbag (6) and the second airbag (8) are inflated, the conductive sheet (03) is tightly attached to the opposing surfaces of the photovoltaic module (04). Both the first airbag (6) and the second airbag (8) are elastic airbags.

2. A high voltage pulse test chamber for photovoltaic modules according to claim 1, characterized in that, Both the first airbag (6) and the second airbag (8) are provided with multiple partitions (10). The partitions (10) are made of elastic material. The multiple partitions (10) divide the interior of the first airbag (6) and the second airbag (8) into multiple air chambers (11). The inflation assembly (9) includes an air pump installed on the test box (1). The air pump outlet is connected to a main air pipe. The main air pipe is connected to a first air pipe and a second air pipe. The first air pipe is connected to the first airbag (6) through multiple branch air pipes. The second air pipe is connected to the second airbag (8) through multiple branch air pipes. The multiple branch air pipes are arranged one-to-one with the multiple air chambers (11). The branch air pipes are connected to the corresponding air chambers (11).

3. A high voltage pulse test chamber for photovoltaic modules as defined in claim 1, characterized in that A clamping assembly (5) is provided on the support plate (4). The clamping assembly (5) includes clamping plates (51) slidably connected to opposite sides of the support plate (4). Slide grooves (41) are provided on opposite sides of the support plate (4). Guide posts (52) are provided in both slide grooves (41). Both clamping plates (51) are slidably connected to the guide posts (52). A first spring (53) is sleeved on opposite ends of the two guide posts (52). One end of the first spring (53) is provided on the surface of the guide post (52), and the other end is provided on the clamping plate (51). When the photovoltaic module (04) is clamped, the first spring (53) is in a compressed state.

4. A high voltage pulse test chamber for photovoltaic modules according to claim 3, characterized in that, The test box (1) has a placement slot (3), and the support plate (4) is slidably connected in the placement slot (3). The partition plate (2) has a drive slot (21) and a guide slot (22) at opposite ends. A screw (211) is rotatably connected in the drive slot (21), and a guide rod (221) is provided in the guide slot (22). One end of the support plate (4) is threaded to the screw (211), and the other end is slidably connected to the guide rod (221). The test box (1) is provided with a drive motor (02) that drives the screw (211) to rotate. The test box (1) is hinged with a door (31) that covers the placement slot (3).

5. A high voltage pulse test chamber for photovoltaic modules as claimed in claim 1, wherein, The test box (1) is provided with a sliding groove (12) which is in sliding fit with the mounting plate (7), the mounting plate (7) is fixed in the sliding groove (12) through a fixing assembly (13), the fixing assembly (13) comprises two latch plates (131) which are in sliding connection with the outer surface of the mounting plate (7), the mounting plate (7) is provided with a moving groove (71) which is in sliding fit with the two latch plates (131), the outer surface of the test box (1) is provided with a latch sleeve (132) which corresponds to the two latch plates (131) one by one, the latch plate (131) is in clamping fit with the corresponding latch sleeve (132), and the mounting plate (7) is provided with a driving assembly (15) which drives the latch plate (131) to move along the moving groove (71).

6. A high voltage pulse test chamber for photovoltaic modules according to claim 5, characterized in that, The driving assembly (15) comprises a gear (151) which is in rotation connection with the outer surface of the mounting plate (7), the gear (151) is provided with a rack plate (152) on the opposite sides in meshing mode, the two rack plates (152) are provided in one-to-one correspondence with the two latch plates (131), the rack plate (152) is in sliding connection in the moving groove (71) and is fixedly connected with the corresponding latch plate (131), and the second spring (153) is arranged in each moving groove (71), one end of the second spring (153) is arranged on the inner side wall of the moving groove (71), and the other end is arranged on the rack plate (152), when the second spring (153) is in a natural state, the latch plate (131) is clamped in the latch sleeve (132).

7. A high voltage pulse test chamber for photovoltaic modules as defined in claim 1, wherein, The test box (1) is provided with a visual window.

8. A high voltage pulse test chamber for photovoltaic modules as defined in claim 1, wherein, The inner side wall of the test box (1) is coated with an electromagnetic shielding coating.

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