A photovoltaic film performance detection device

Abstract

The present application relates to photovoltaic film detection technical field, specifically to a kind of photovoltaic film performance detection equipment, including spectrophotometer with integrating sphere accessory, integrating sphere accessory is installed in the sample bin of spectrophotometer, installation mechanism and wrinkle generator are also installed in sample bin, wrinkle generator includes the top pressure head for applying local mechanical pressure to photovoltaic film and the L-shaped top rod of applying non-uniform mechanical tension, wrinkle generator also includes transmission part, top pressure head and L-shaped top rod are alternately extended along front-back direction under the transmission of transmission part to make photovoltaic film surface produce different wrinkle;The light transmittance of photovoltaic film with different inclination degrees and different wrinkle conditions is detected by spectrophotometer with integrating sphere accessory, more close to actual photovoltaic film use state, detection result is more accurate, provides more reliable basis for the performance evaluation of photovoltaic film.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of photovoltaic film detection, and particularly relates to a photovoltaic film performance detection device. BACKGROUND

[0002] The photovoltaic film is a kind of functional film material specially used for encapsulating solar photovoltaic modules, which mainly plays a role in bonding the cell sheet, glass and back plate into an integral structure, and provides moisture resistance, ultraviolet resistance and mechanical protection, and mainly includes EVA, POE and other adhesive film types, and has high transparency, strong adhesion and weather resistance.

[0003] When the photovoltaic film is detected in performance, the light transmittance is one of the core performance indexes, and currently, when the light transmittance of the photovoltaic film is detected by using a spectrophotometer, the photovoltaic film is usually tested at a fixed angle and a standard flatness, and the light transmittance directly affects the absorption efficiency of the photovoltaic cell to sunlight; however, when the photovoltaic module is used outdoors, the illumination angle of sunlight will change with time, and part of the photovoltaic module itself will also adjust the inclination angle, so that the illumination angle of light changes, and then the light transmittance of the photovoltaic film is affected.

[0004] In addition, when the photovoltaic module is used outdoors, the film surface may be wrinkled due to temperature changes, mechanical stress or installation angles, and the wrinkles will also affect the light transmittance of the photovoltaic film, and currently, there is a lack of detection and analysis of the influence of the wrinkles on the light transmittance of the photovoltaic film. SUMMARY

[0005] The application provides a photovoltaic film performance detection device to solve the problem that the influence of the inclination angle and the wrinkle degree of the photovoltaic film on the light transmittance is lacked in the prior art.

[0006] The application provides a photovoltaic film performance detection device, which comprises a spectrophotometer with an integrating sphere accessory, the integrating sphere accessory is installed in a sample chamber of the spectrophotometer, and a mounting mechanism is further installed in the sample chamber, the mounting mechanism comprises a moving block sliding in the front-rear direction, a rotating frame rotatably installed on the top of the moving block and two sample mounting assemblies fixedly installed on the rotating frame and vertically distributed.

[0007] The sample mounting assembly comprises a connecting frame fixed to the outer wall of the rotating frame, an L-shaped pipe fixed to the end of the connecting frame, a clamping part provided on the L-shaped pipe and used for clamping the photovoltaic film sample and a driving piece used for driving the photovoltaic film sample to incline.

[0008] When the light transmittance of the photovoltaic film sample is detected, the sample mounting assembly is accurately located in front of the sample port of the integrating sphere accessory, and the center of the photovoltaic film sample is opposite the entrance light spot of the integrating sphere accessory.

[0009] The sample chamber is also provided with a wrinkle generator, which comprises a top pressure head for applying local mechanical pressure to the photovoltaic film and an L-shaped top rod for applying non-uniform mechanical tension, and further comprises a transmission part, the top pressure head and the L-shaped top rod being alternately extended in the front-back direction under the transmission of the transmission part to make the photovoltaic film surface produce different wrinkle, and the photovoltaic film with different inclination and wrinkle is detected for light transmittance by a spectrophotometer with an integrating sphere accessory.

[0010] In a possible implementation, the clamping part comprises two L-shaped clamping rods distributed at two ends of the U-shaped tube, the horizontal segments of the two L-shaped clamping rods are fixed with rectangular plates, the rectangular plates are slidingly inserted into the U-shaped tube, a telescopic rotating shaft is rotatably connected between the two L-shaped clamping rods, the U-shaped tube is provided with a locking member for fixing the rotating angle of the rotating shaft, and the clamping part further comprises rotating bars fixedly sleeved at two ends of the rotating shaft, when the rotating bars are rotated to a vertical state, the rotating bars and the vertical segments of the L-shaped clamping rods can clamp the photovoltaic film sample.

[0011] In a possible implementation, a plurality of circular holes are formed in the side wall of the rotating bar in sequence from top to bottom, a piston member is slidingly arranged in the circular hole, a piston rod of the piston member extends out of the circular hole, and a plurality of piston rods are fixed with a connecting rod at the ends, and the length of the piston rod is greater than the depth of the circular hole.

[0012] In a possible implementation, the piston of the piston member is composed of a magnet fixed at the center of the piston rod and a rubber ring wrapped outside the magnet, the rubber ring is in close contact with the inner wall of the circular hole, the piston rod drives the piston to move out of the opening of the circular hole by pressing the connecting rod, and the magnet is attached to the L-shaped clamping rod to clamp and fix the photovoltaic film sample.

[0013] In a possible implementation, the rotating shaft comprises spline shafts rotatably installed at the corners of the L-shaped clamping rods and a spline tube arranged between the two spline shafts, and the spline tube is slidingly matched with the splines at the ends of the spline shafts.

[0014] In a possible implementation, the locking member comprises a positioning seat fixed at the top end of the U-shaped tube, the upper surface of the positioning seat is a circular arc surface, a plurality of spring pins are arranged on the circular arc surface and are uniformly distributed along the circumferential direction and the axial direction of the circular arc surface, a plurality of positioning holes are formed in the circumferential surface of the spline tube and are uniformly distributed along the circumferential direction and the axial direction, and all the spring pins are elastically inserted into the corresponding positioning holes to fix the angle of the spline tube.

[0015] In a possible implementation, the driving member is used to drive the rotating shaft to rotate, the driving member comprises an electric push rod fixed at the outlet of the sample chamber and a rack one fixed at the top end of the electric push rod, and a gear one is fixedly sleeved on one of the spline shafts in each sample mounting assembly and is in meshing transmission with the rack one at the top end of the electric push rod.

[0016] In a possible implementation manner, the transmission part comprises two supports fixed on the inner wall of the rear end of the sample chamber of the spectrophotometer and a rotating shaft rotatably connected between the two supports, the end of the rotating shaft penetrates through the corresponding support and is fixedly connected with a gear three, the middle part of the rotating shaft is fixedly sleeved with a gear two, the lower part of the gear two is engaged with a rack two, the rack two is connected with an electric telescopic rod between the inner wall of the rear end of the sample chamber, a pressing head is fixed on the front end of the rack two, the top of the gear three is engaged with a rack three, the top end of the rack three is provided with a guide rail limiting sliding of the rack three, the guide rail is fixed with the inner wall of the sample chamber, and the front end of the rack three is integrally formed with an L-shaped ejector rod, one of the L-shaped ejector rods has a narrower width, and the horizontal section of the other L-shaped ejector rod is integrally formed with a wedge.

[0017] The above one or more technical solutions in the embodiment of the present application have at least one of the following technical effects: the present application detects the light transmittance of photovoltaic films under different inclination angles and different wrinkle degrees through the spectrophotometer with an integrating sphere accessory, is more in line with the actual use state of the photovoltaic film, the detection result is more accurate, and more reliable basis is provided for performance evaluation of the photovoltaic film.

[0018] Secondly, two photovoltaic films are fixed by the two sample installation assemblies for detection, when one of them is subjected to light transmittance detection, the other can be subjected to force application, so that the photovoltaic film is wrinkled, the same force is applied to a plurality of photovoltaic film samples of the same specification, so that the wrinkles of the photovoltaic films are as same as possible, and thus the influence law of the wrinkles on the light transmittance is obtained.

[0019] In addition, the local mechanical pressure is applied by the pressing head in the wrinkle generator, and the non-uniform mechanical tension is applied by the L-shaped ejector rod with the wedge, so that different wrinkles of the photovoltaic film can be generated, and the wrinkles can be selected according to actual needs. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the spectrophotometer with an integrating sphere accessory provided by the embodiment of the present application.

[0021] Figure 2 is Figure 1 is a schematic diagram of the sample chamber cover after being opened (the integrating sphere accessory is not shown).

[0022] Figure 3 is a three-dimensional structural schematic diagram of the installation mechanism.

[0023] Figure 4 is a three-dimensional structural schematic diagram of the sample installation assembly and the rotating frame.

[0024] Figure 5 is a three-dimensional structural schematic diagram of the sample installation assembly and the rotating frame from another perspective.

[0025] Figure 6 is a partial sectional view of the sample mount.

[0026] Figure 7 is Figure 6 is an enlarged schematic view of region A in

[0027] Figure 8 is a schematic view of the structure of the wrinkle generator.

[0028] Figure 9 is a schematic view of the structure of the wrinkle generator from another perspective.

[0029] In the figure: 1, spectrophotometer; 2, mounting mechanism; 3, wrinkle generator; 21, limit block; 22, guide rod; 23, moving block; 24, rotating frame; 25, sample mounting assembly; 251, connecting frame; 252, L-shaped tube; 253, clamping part; 2531, L-shaped clamping rod; 2532, rectangular plate; 2533, spline shaft; 2534, spline tube; 2535, rotating bar; 2536, piston part; 2537, connecting rod; 2538, positioning seat; 2539, spring pin; 254, driving part; 2541, gear one; 2542, electric push rod; 31, support; 32, rotating shaft; 33, gear two; 34, gear three; 35, rack two; 36, pressing head; 37, electric telescopic rod; 38, L-shaped ejector rod; 39, guide rail. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , a photovoltaic film performance detection device, comprising a spectrophotometer 1 with an integrating sphere accessory, wherein the integrating sphere accessory is installed in the sample chamber of the spectrophotometer 1, and a mounting mechanism 2 and a wrinkle generator 3 are also installed in the sample chamber, the mounting mechanism 2 comprises two limit blocks 21 fixed in the sample chamber, two parallel guide rods 22 are arranged between the two limit blocks 21, a moving block 23 is slidably arranged on the guide rods 22, the moving block 23 can move transversely from the opening of the sample chamber into the sample chamber, and a rotating frame 24 is rotatably installed on the top of the moving block 23, two sample mounting assemblies 25 distributed at ninety degrees are fixedly installed on the rotating frame 24, and the sample mounting assemblies 25 are used for fixing the photovoltaic film sample to be tested.

[0032] It should be noted that the integral sphere accessory is not shown in the figure, the photovoltaic film sample installed on the sample installation assembly 25 is precisely in front of the sample port of the integral sphere accessory during the transmittance detection, and the center of the photovoltaic film sample is directly opposite the entrance spot of the integral sphere accessory.

[0033] It should be further noted that the movement of the moving block 23 can be achieved by a micro electric push rod, an electric sliding block or other power structures capable of achieving linear reciprocating movement, and the rotation of the rotating frame 24 can be achieved by a gear transmission, a worm and a worm or other driving mechanisms capable of achieving small angle rotation, which is prior art and will not be described here.

[0034] Please refer to Figure 3 , Figure 4 and Figure 5 , the sample installation assembly 25 includes a connecting frame 251 fixed to the outer wall of the rotating frame 24, an L-shaped pipe 252 fixed to the end of the connecting frame 251, a clamping portion 253 provided on the L-shaped pipe 252 for clamping the photovoltaic film sample and a driving member 254 for driving the photovoltaic film sample to tilt, the clamping portion 253 includes two L-shaped clamping rods 2531 distributed at both ends of the L-shaped pipe 252, the horizontal segments of the two L-shaped clamping rods 2531 are fixed with rectangular plates 2532, and the rectangular plates 2532 are slidingly inserted into the L-shaped pipe 252, a telescopic rotating shaft is rotatably connected between the two L-shaped clamping rods 2531, the rotating shaft includes a spline shaft 2533 rotatably installed at the corner of the L-shaped clamping rod 2531 and a spline pipe 2534 provided between the two spline shafts 2533, the spline pipe 2534 is in sliding fit with the spline of the end of the spline shaft 2533, the clamping portion 253 further includes a rotating bar 2535 sleeved on the spline shaft 2533, the top end of the rotating bar 2535 is flush with the top end of the vertical segment of the L-shaped clamping rod 2531, when the rotating bar 2535 is rotated to the vertical state, the photovoltaic film sample can be clamped between the rotating bar 2535 and the vertical segment of the L-shaped clamping rod 2531.

[0035] Please refer to Figure 5 , Figure 6 and Figure 7The side wall of the rotating bar 2535 is provided with a plurality of circular holes distributed sequentially from top to bottom, a piston 2536 is slidably arranged in the circular hole, the piston 2536 comprises a piston and a piston rod, the piston of the piston 2536 is composed of a magnet fixed in the center of the piston rod and a rubber ring wrapped outside the magnet, the rubber ring is in close contact with the inner wall of the circular hole, the piston rod of the piston 2536 extends out of the circular hole, and a plurality of piston rod ends are fixed with a connecting rod 2537, the length of the piston rod is greater than the depth of the circular hole, when it is needed to clamp the photovoltaic film sample between the rotating bar 2535 and the L-shaped clamping rod 2531, the connecting rod 2537 is pressed to drive the piston rod to move out of the opening of the circular hole, and the magnet is attached to and adsorbed by the L-shaped clamping rod 2531.

[0036] When the connecting rod 2537 is pulled, a plurality of pistons are synchronously moved out of the circular hole, in the case that the photovoltaic film contacts the rotating bar 2535, negative pressure is generated in the circular hole, so that the photovoltaic film is adsorbed and fixed on the rotating bar 2535, and the subsequent rotating bar 2535 drives the photovoltaic film to change the inclination angle.

[0037] It should be noted that only the side of the L-shaped clamping rod 2531 opposite to the rotating bar 2535 is provided with a metal layer, so as to clamp and fix the photovoltaic film sample by magnet adsorption; the photovoltaic film sample is adsorbed and fixed by multiple-point negative pressure, so as to change the inclination angle of the photovoltaic film sample by rotating the photovoltaic film sample around the spline shaft 2533 through the rotating bar 2535.

[0038] Please refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 7 , the driving member 254 is used for driving the rotating shaft to rotate, the driving member 254 comprises an electric push rod 2542 fixed at the outlet of the sample chamber and a rack one fixed at the top end of the electric push rod 2542, one spline shaft 2533 in each sample mounting assembly 25 is fixedly sleeved with a gear one 2541, and the gear one 2541 is in meshing transmission with the rack one at the top end of the electric push rod 2542.

[0039] As shown in Figure 3 , the gear one 2541 on the rotating shaft parallel to the guide rod 22 is close to the opening of the sample chamber, and the gear one 2541 will be in meshing transmission with the rising rack one only when the moving block 23 drives the rotating frame 24 and the sample mounting assembly 25 to move to the opening of the sample chamber.

[0040] Please refer to Figure 6 and Figure 7The clamping part 253 further comprises a locking member for fixing the rotation angle of the rotation shaft, the locking member comprises a positioning seat 2538 fixed at the top end of the L-shaped tube 252, the upper surface of the positioning seat 2538 is a circular arc surface, and a plurality of spring pins 2539 are arranged on the circular arc surface and are uniformly distributed along the circumferential direction and the axial direction. A plurality of positioning holes are arranged on the circumferential surface of the spline tube 2534 and are uniformly distributed along the circumferential direction and the axial direction. All the spring pins 2539 are elastically inserted into the corresponding positioning holes to fix the spline tube 2534. When the driving member 254 drives the spline shaft 2533 to rotate, the spline tube 2534 rotates under the action of the spline. At this time, the spring pins 2539 are shortened and moved out of the positioning holes under the resistance of the inner wall of the positioning holes. When the spring pins 2539 correspond to the positioning holes in the next position, the spring pins 2539 are reinserted into the positioning holes to fix the rotation angle of the spline tube 2534 and the rotation bar 2535.

[0041] In this case, the photovoltaic film sample is adsorbed and attached to the rotation bar 2535 in the inclined state, and the inclination direction changes with the change of the angle of the rotation bar 2535. The light transmittance of the photovoltaic film between the back plate and the solar cell in the photovoltaic module when the photovoltaic module changes the angle and is irradiated by scattered light is simulated.

[0042] It should be noted that when the photovoltaic film sample is fixed by the negative pressure adsorption method, the rotation bar 2535 is slightly inclined first, so that the photovoltaic film can be in full contact with the rotation bar 2535 under the action of gravity, and then the photovoltaic film is adsorbed and attached to the rotation bar 2535 by means of negative pressure extraction.

[0043] Please refer to Figure 2 , Figure 8 and Figure 9, the wrinkle generator 3 includes a top pressure head 36 for applying local mechanical pressure and an L-shaped top rod 38 for applying non-uniform mechanical tension, the top pressure head 36 and the L-shaped top rod 38 are alternately extended in the front-back direction under the driving action of a transmission part, the transmission part includes two supports 31 fixed on the inner wall of the rear end of the sample chamber of the spectrophotometer 1 and a rotating shaft 32 rotatably connected between the two supports 31, the end of the rotating shaft 32 penetrates through the corresponding support 31 and is fixedly connected with a gear three 34, the middle part of the rotating shaft 32 is fixedly sleeved with a gear two 33, the diameter of the gear two 33 is smaller than that of the gear three 34, the gear two 33 is meshed with a rack two 35 below, the rack two 35 is connected with an electric telescopic rod 37 between the inner wall of the rear end of the sample chamber, the front end of the rack two 35 is threadedly connected or inserted with the top pressure head 36, the top of the gear three 34 is meshed with a rack three, the front end of the rack three is integrally formed with the L-shaped top rod 38, one of the L-shaped top rods 38 is narrower, the horizontal section of the other L-shaped top rod 38 is integrally formed with a wedge, and the transmission part further includes two guide rails 39 fixed on the inner wall of the rear end of the sample chamber, the positions of the guide rails 39 correspond to the rack three one by one, and the guide rails 39 slide with the rack three limited.

[0044] The rack two 35 is driven to move forward and backward by the telescopic rod 37, and then the gear two 33 is rotated by meshing, and the gear three 34 is driven to move in the opposite direction along the guide rail 39 by meshing with the rack three, when the top pressure head 36 moves forward, the photovoltaic film which has been detected for light transmittance at different angles can be locally pressed, so that the photovoltaic film clamped and fixed is deformed to generate a kind of wrinkle, when the top pressure head 36 moves backward, the L-shaped top rod 38 moves forward, the slope of the wedge drives the rotating strip 2535 and the L-shaped clamping rod 2531 to move, so that the rectangular plate 2532 is pulled out from the L-shaped tube 252 for a longer distance, and the L-shaped top rod 38 without the wedge does not exert extrusion force on the rotating strip 2535 and the L-shaped clamping rod 2531, so that the photovoltaic film clamped and fixed is subjected to non-uniform mechanical tension, resulting in another kind of wrinkle generated by local stretching.

[0045] When any kind of wrinkle occurs, the photovoltaic film for light transmittance detection at different angles is also detected, at this time, the rotating frame 24 can be reset to drive the two sample mounting assemblies 25 to switch positions to prepare for light transmittance detection of the wrinkled photovoltaic film.

[0046] It should be noted that, in order to avoid the two sample mounting assemblies 25 from colliding with the integrator sphere accessory when rotating, causing damage to the integrator sphere accessory, before the rotating frame 24 rotates, the rotating frame 24 and the sample mounting assemblies 25 can be moved a certain distance by the moving block 23, so that the sample mounting assemblies 25 avoid the vicinity of the integrator sphere accessory when rotating, and then the rotating frame 24 is reset by the moving block 23 until the center of the wrinkled photovoltaic film sample is aligned with the entrance spot of the integrator sphere accessory, and the sample mounting assemblies 25 are accurately located in front of the sample port of the integrator sphere accessory.

[0047] When the light transmittance of the photovoltaic film sample needs to be detected, first, open the cover of the sample chamber, then insert the photovoltaic film from top to bottom between the rotating bar 2535 and the L-shaped clamping rod 2531, spread the photovoltaic film, press the connecting rod 2537, so that the piston rod drives the piston to move out of the circular hole opening, the magnet is attached to the L-shaped clamping rod 2531 to adsorb and clamp the photovoltaic film, then the moving block 23 moves to drive the sample mounting assembly 25 to move, so that the center of the clamped photovoltaic film is opposite the entrance spot of the integrating sphere accessory, close the cover, and turn on the spectrophotometer 1 to detect the light transmittance of the first photovoltaic film in the vertical state.

[0048] After the detection is completed, the sample mounting assembly 25 is reset, the cover is opened, and then the rack one is raised by a distance and then paused by using the electric push rod 2542, under the meshing action of the rack one, the gear one 2541 drives the spline shaft 2533 to rotate, and the other spline shaft 2533 synchronously rotates under the action of the spline tube 2534, the photovoltaic film is manually pressed to be attached to the rotating bar 2535, then the connecting rod 2537 is pulled, and multiple pistons are synchronously moved out of the circular hole, under the condition that the photovoltaic film and the rotating bar 2535 are in contact, negative pressure is generated in the circular hole, so that the photovoltaic film is adsorbed and fixed on the rotating bar 2535, the moving block 23 drives the sample mounting assembly 25 to move to the position aligned with the integrating sphere accessory again, the cover is closed, and the spectrophotometer 1 is turned on again to detect the light transmittance of the first photovoltaic film at the first inclination angle.

[0049] After the detection is completed, the sample mounting assembly 25 is reset, the cover is opened, and then the rack one is raised by a distance and then paused by using the electric push rod 2542, under the meshing action of the rack one, the gear one 2541 drives the spline shaft 2533 to rotate, and the other spline shaft 2533 synchronously rotates under the action of the spline tube 2534, the photovoltaic film is manually pressed to be attached to the rotating bar 2535, then the connecting rod 2537 is pulled, and multiple pistons are synchronously moved out of the circular hole, under the condition that the photovoltaic film and the rotating bar 2535 are in contact, negative pressure is generated in the circular hole, so that the photovoltaic film is adsorbed and fixed on the rotating bar 2535, the moving block 23 drives the sample mounting assembly 25 to move to the position aligned with the integrating sphere accessory again, the cover is closed, and the spectrophotometer 1 is turned on again to detect the light transmittance of the first photovoltaic film at the first inclination angle.

[0050] It should be noted that the rack one needs to be reset after each time of rising, to avoid that the gear one 2541 is meshed with the rack one when the sample mounting assembly 25 is moved and reset, and the height of each time of rising is increased compared with the last time, so that the photovoltaic film is gradually inclined, and the inclination angle of the photovoltaic film is fixed, which can be determined according to the included angle between two adjacent positioning holes.

[0051] It should be noted that the photovoltaic film can also be rotated under the driving of the rotating frame 24 to change the inclination direction.

[0052] After the transmittance detection of the first photovoltaic film at different angles is completed, the second photovoltaic film is switched to the position aligned with the integrating sphere accessory, and the transmittance detection process of the second photovoltaic film is the same as that of the first photovoltaic film. When the transmittance detection at the last inclined angle of the second photovoltaic film is completed, an external force is applied to the first photovoltaic film through the wrinkle generator 3 to generate wrinkles, and the external force can be a local external force or a non-uniform mechanical tension. Then, the two sample mounting assemblies 25 are switched positions by the rotating frame 24 to prepare for the transmittance detection of the first wrinkled photovoltaic film. The detection process and requirements are the same as those of the transmittance detection of the photovoltaic film at different angles.

[0053] It should be noted that the first photovoltaic film needs to be reset to the vertical clamping state after the transmittance detection at different angles is completed, so that the external force can be applied. When no external force is applied to the photovoltaic film, the top pressure head 36 and the L-shaped top rod 38 are spaced apart from the sample mounting assembly 25.

[0054] In the embodiments of the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The first feature can be directly below or obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0055] In the description of the present application, it should be noted that, unless specifically defined and limited otherwise, the terms "provided", "connected", "mounted", and "connected" should be understood broadly, for example, they can be fixedly connected, or detachably connected, or integrally connected, or slidingly connected; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or connected between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0056] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A photovoltaic film performance detection device, comprising a spectrophotometer with an integrating sphere accessory, the integrating sphere accessory is installed in a sample chamber of the spectrophotometer, and a mounting mechanism is further installed in the sample chamber, characterized in that: the mounting mechanism comprises a moving block sliding in the front-rear direction, a rotating frame rotatably mounted on the top of the moving block, and two sample mounting assemblies fixedly mounted on the rotating frame in vertical distribution; the sample mounting assembly comprises a connecting frame fixed on the outer wall of the rotating frame, an L-shaped tube fixed on the end of the connecting frame, a clamping part arranged on the L-shaped tube for clamping the photovoltaic film, and a driving part for driving the photovoltaic film to tilt; when the photovoltaic film is subjected to light transmittance detection, the sample mounting assembly is accurately positioned in front of the sample port of the integrating sphere accessory, and the center of the photovoltaic film is opposite the entrance light spot of the integrating sphere accessory; a wrinkle generator is further installed in the sample chamber, the wrinkle generator comprises a top pressure head for applying local mechanical pressure to the photovoltaic film and an L-shaped top rod for applying non-uniform mechanical tension, and the wrinkle generator further comprises a transmission part, the top pressure head and the L-shaped top rod are alternately extended in the front-rear direction under the transmission of the transmission part to generate different wrinkles on the surface of the photovoltaic film; the light transmittance of the photovoltaic film with different tilt degrees and different wrinkles is detected by the spectrophotometer with the integrating sphere accessory. The clamping part comprises two L-shaped clamping rods distributed at the two ends of the L-shaped tube, the horizontal segments of the two L-shaped clamping rods are fixed with rectangular plates, the rectangular plates are slidingly inserted into the L-shaped tube, a telescopic rotating shaft is rotatably connected between the two L-shaped clamping rods, a locking member for fixing the rotating angle of the rotating shaft is arranged on the L-shaped tube, and the clamping part further comprises rotating bars fixedly sleeved on the two ends of the rotating shaft, when the rotating bars are rotated to the vertical state, the photovoltaic film can be clamped between the rotating bars and the vertical segments of the L-shaped clamping rods. A plurality of circular holes are formed in the side wall of the rotating bar in sequence from top to bottom, a piston member is slidingly arranged in the circular hole, a piston rod of the piston member extends out of the circular hole, and a connecting rod is fixed at the ends of a plurality of piston rods, and the length of the piston rod is greater than the depth of the circular hole. The piston of the piston member is composed of a magnet fixed at the center of the piston rod and a rubber ring wrapped outside the magnet, the rubber ring is in close contact with the inner wall of the circular hole, the piston rod drives the piston to move out of the opening of the circular hole by pressing the connecting rod, and the magnet is attached to the L-shaped clamping rod to clamp the photovoltaic film. The rotating shaft comprises spline shafts rotatably mounted at the corners of the L-shaped clamping rod and a spline tube arranged between the two spline shafts, and the spline tube is in sliding fit with the splines at the ends of the spline shafts. The locking member comprises a positioning seat fixed at the top end of the L-shaped tube, the upper surface of the positioning seat is a circular arc surface, a plurality of spring pins are arranged on the circular arc surface, the spring pins are uniformly distributed along the circumferential direction and the axial direction of the circular arc surface, a plurality of positioning holes are formed in the circumferential surface of the spline tube and are uniformly distributed along the circumferential direction and the axial direction, and all the spring pins are elastically inserted into the corresponding positioning holes to fix the angle of the spline tube.

2. The photovoltaic film performance detection device of claim 1, wherein: ​ 3. The photovoltaic film performance detection apparatus of claim 2, wherein: ​ 4. The photovoltaic film performance detection apparatus of claim 3, wherein: ​ 5. The photovoltaic film performance detection apparatus of claim 2, wherein: ​ 6. The photovoltaic film performance detection apparatus of claim 5, wherein: ​ 7. The photovoltaic film performance detection apparatus of claim 6, wherein: The driving member is used for driving the rotation of the rotating shaft, and comprises an electric push rod fixed at the outlet of the sample chamber and a rack one fixed at the top end of the electric push rod, a gear one is fixedly sleeved on one of the spline shafts in each sample mounting assembly, and the gear one is in meshing transmission with the rack one at the top end of the electric push rod.

8. The photovoltaic film performance detection apparatus of claim 1, wherein: The transmission part comprises two supports fixed on the inner wall of the rear end of the sample chamber of the spectrophotometer and a rotating shaft rotatably connected between the supports, the end of the rotating shaft penetrates through the corresponding support and is fixedly connected with a gear three, the middle part of the rotating shaft is fixedly sleeved with a gear two, the lower part of the gear two is in meshing transmission with a rack two, the electric telescopic rod is connected between the rack two and the inner wall of the rear end of the sample chamber, the top pressing head is fixed on the front end of the rack two, the top of the gear three is in meshing transmission with a rack three, the top end of the rack three is provided with a guide rail for sliding limiting, the guide rail is fixed on the inner wall of the sample chamber, and the front end of the rack three is integrally formed with an L-shaped top rod, the width of one of the L-shaped top rods is smaller, and the horizontal section of the other L-shaped top rod is integrally formed with a wedge.

Images