Solar simulator spectrum filter adjusting system

Abstract

The utility model relates to the technical field of simulators, and discloses a solar simulator spectrum filter adjusting system which comprises a base shell, a light hole is formed in the base shell in a communicating mode in the direction perpendicular to the length direction of the base shell, and a shutter used for opening and closing the light hole is slidably arranged at the light hole, close to one side of a light facing face, in the base shell. A semi-light shading piece is arranged at the position, close to the side away from the light facing face, of the light transmitting hole in the base shell, the semi-light shading piece covers the light transmitting hole, and a light filtering part is arranged between the semi-light shading piece and the shutter. The light filtering part comprises a light filtering frame, two reels rotationally arranged in the light filtering frame, a flexible light filter jointly wound on the two reels and a servo motor for driving the reels to rotate, the two reels are distributed on the two sides of the light hole in the length direction of the base shell, and when the flexible light filter is completely unfolded, the flexible light filter is driven by the servo motor to rotate. And a plurality of color cards matched with different spectral bands of sunlight are distributed along the length direction of the color cards. The method has the effects of improving the refinement effect of spectrum adjustment and enlarging the spectrum adjustment range.

Description

Technical Field

[0001] The present application relates to the field of simulator technology, and in particular to a solar simulator spectral filter adjustment system. Background Art

[0002] With the increasing demand for solar energy research and photovoltaic material testing, solar simulators have become widely used as an important tool for testing solar cell efficiency. By simulating real-world sunlight conditions in a laboratory environment, solar simulators can accurately evaluate the efficiency, stability, and reliability of solar equipment. This is crucial for ensuring the performance of photovoltaic products in real-world applications.

[0003] Existing solar simulators typically use a fixed light source and filter combination. Using a variety of filters can filter out unwanted spectral components while enhancing or supplementing specific wavelengths of light. By precisely selecting and combining filters, the spectrum can be fine-tuned to achieve the desired spectral match. While simple, replacing filters does not allow for precise spectral adjustment and is cumbersome. This makes flexible spectral adjustment difficult, limiting its application in complex environments.

[0004] A Chinese patent with publication number CN217816553U discloses a steady-state solar simulator spectrally adjustable filter system, which includes: a base, in which a slide rail portion is provided; a filter portion, on which the filter portion is provided; and a drive portion fixed to the base, the drive portion being connected to the filter portion, and the drive portion driving the filter portion to move within the base.

[0005] The aforementioned solar simulator spectrally adjustable filter system uses a pneumatic cylinder to slide a single filter onto a slide rail into the solar simulator's optical path, attenuating the spectral irradiance of a specific wavelength band. Due to the limited volume of the base, the number of slide rails and, consequently, the number of filters that can be installed is limited, resulting in a narrow spectral adjustment range and difficulty achieving precise spectral adjustment. Utility Model Content

[0006] In order to improve the refinement effect of spectral adjustment and increase the adjustment range of the spectrum, the present application provides a solar simulator spectral filter adjustment system.

[0007] The present application provides a solar simulator spectral filter adjustment system that adopts the following technical solutions:

[0008] A solar simulator spectral filter adjustment system comprises a base shell, wherein the base shell is connected and provided with a light-transmitting hole along a direction perpendicular to the base shell's length, a shutter for opening and closing the light-transmitting hole is slidably provided at the light-transmitting hole near the light-facing side in the base shell, a semi-light-shielding sheet is provided at the light-transmitting hole near the side away from the light-facing side in the base shell, the semi-light-shielding sheet covers the light-transmitting hole, a filter section is provided between the semi-light-shielding sheet and the shutter, the filter section comprises a filter frame, two reels rotatably provided in the filter frame, a flexible filter wound together on the two reels, and a servo motor for driving the reels to rotate, the two reels are distributed on both sides of the light-transmitting hole along the length direction of the base shell, and when the flexible filter is fully unfolded, a number of color cards matching different spectral bands of sunlight are distributed along its length direction, and the size of each color card is matched with the light-transmitting hole.

[0009] By employing this technical solution, during operation, the spectral filter adjustment system slides to an open position on the light-facing side of the shutter. Light enters the base housing through the light-transmitting aperture and then passes through a color patch on the flexible filter, which now covers the light-transmitting aperture. The light, filtered by the specific color patch, then passes through a semi-gloss shield. Finally, after being extincted by the semi-gloss shield, it exits the base housing through the light-transmitting aperture and illuminates the test sample. This achieves high-precision adjustment of the solar simulator's spectrum. The multiple color patches on the flexible filter cover different spectral bands. A servo motor controls the rotation of the scroll, allowing precise selection and switching of different color patches, enabling fine-tuning of the solar spectrum. This design not only increases the flexibility of spectral adjustment but also expands the range of spectral adjustment, enabling the solar simulator to accurately simulate the solar spectrum under a wider range of experimental conditions. Furthermore, the shutter and semi-gloss shield effectively prevent interference from stray light, further improving the system's stability and accuracy.

[0010] Optionally, the servo motor is coaxially connected to the top of one of the reels, and a coil spring is provided between the tops of the two reels, one end of the coil spring is sleeved on the top of the reel connected to the servo motor, and the end of the coil spring facing away from the servo motor is connected to and wound around the top of the other reel.

[0011] By adopting this technical solution, a servo motor coaxially connected to the top of one of the reels precisely controls the reel's rotation angle, enabling accurate switching between color swatches on the flexible filter and improving the accuracy of spectral adjustment. The coil spring not only drives the synchronous and stable rotation of the two reels but also provides stable tension during the unwinding and rewinding of the flexible filter, preventing it from loosening or deforming, thereby improving the stability of spectral adjustment.

[0012] Optionally, a cover plate is detachably provided on the top of the base shell, a slide is provided between the inner bottom wall of the base shell and the inner top wall of the corresponding cover plate corresponding to the shutter, and a positioning groove is provided corresponding to the semi-light shielding sheet and the filter frame.

[0013] By adopting this technical solution, the removable cover plate on top of the base housing facilitates installation and maintenance of internal components. The slideway and positioning grooves between the base housing's inner bottom wall and the cover plate's inner top wall ensure smooth shutter movement and precise positioning of the semi-blind shield and filter frame, respectively, enhancing system reliability and stability.

[0014] Optionally, a cylinder is provided on the side wall of the base shell, a piston rod of the cylinder slides through the base shell and enters the interior, and an end of the piston rod is connected to the frame of the shutter.

[0015] By adopting the above technical solution, the piston rod of the cylinder slides through the base shell into the interior and is connected to the frame of the shutter, thereby achieving precise control of the shutter position, so that the light-transmitting hole can be quickly opened or closed when needed, ensuring the efficiency and accuracy of the spectral adjustment process.

[0016] Optionally, the filter frame includes a door-shaped frame and a bottom plate detachably connected to the bottom end of the door-shaped frame, and both end side walls of the fully unfolded flexible filter are connected to a reel, and a guide key is provided on the inner wall of the reel along its own length direction, and a guide groove is provided on the outer wall of the reel along its own length direction, and the guide key corresponds to the guide groove one by one and is plugged into each other.

[0017] By adopting the above technical solution, the separate setting between the door frame and the base plate, and the reel and the reel facilitates the replacement of the flexible filter that is worn out after long-term use. The latter two achieve precise control of the position of the flexible filter during the unfolding and reeling process through the sliding cooperation between the guide key and the guide groove, avoiding the spectral adjustment error caused by displacement and improving the accuracy and stability of the spectral adjustment.

[0018] Optionally, a positioning recess is provided on the bottom plate corresponding to each reel, and the end of the reel is inserted into the positioning recess and rotates with the positioning recess.

[0019] By adopting this technical solution, the positioning recess on the base plate effectively fixes the position of the reel, ensuring that it does not shift during rotation, thereby improving system stability. The rotational coordination between the reel and the positioning recess reduces frictional resistance and improves the smoothness of the servo motor-driven reel rotation, thereby achieving smooth unwinding and rewinding of the flexible filter and enhancing the precision and reliability of spectral adjustment.

[0020] Optionally, a plurality of balls are arranged on the inner side wall of the positioning recess, and the end of the reel inserted into the positioning recess is arranged to fit between the balls.

[0021] By adopting the above technical solution and arranging a plurality of balls, the friction resistance of the reel during rotation is reduced, and the running stability and service life of the system are further improved.

[0022] Optionally, positioning plates are vertically arranged on both sides of the light-entering direction of the positioning groove for placing the semi-light shading film on the inner bottom wall of the base shell, and hemispherical snap-in blocks are arranged on the opposite side walls of the two positioning plates. The positioning plates are supported by elastic material, and the side walls of the semi-light shading film shell are provided with snap-in grooves that are plugged into the snap-in blocks.

[0023] By adopting the above technical solution, the positioning plate made of elastic material facilitates the rapid docking and peeling of the snap-in block and the snap-in groove, thereby realizing the rapid installation and precise positioning of the semi-light shielding sheet and enhancing the reliability and stability of the system.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. During the operation of the spectral filter adjustment system, the shutter slides to the light-transmitting hole on the side facing the light and is in the open state. The light source enters the base shell from the light-transmitting hole, and then passes through the color card on the flexible filter that covers the light-transmitting hole. The light band filtered by the specific color card then passes through the semi-light shielding plate, and finally leaves the base shell from the light-transmitting hole after being extinct by the semi-light shielding plate and irradiates the test sample. High-precision adjustment of the solar simulator spectrum is achieved. The multiple color cards on the flexible filter can cover different spectral bands. The rotation of the scroll is controlled by the servo motor, and different color cards can be accurately selected and switched, thereby achieving fine adjustment of the solar spectrum. This design not only improves the flexibility of spectral adjustment, but also expands the adjustment range of the spectrum, allowing the solar simulator to accurately simulate the solar spectrum under a wider range of experimental conditions. In addition, the design of the shutter and the semi-light shielding plate effectively prevents interference from stray light, further improving the stability and accuracy of the system;

[0026] 2. A servo motor coaxially connected to the top of one of the reels precisely controls the reel's rotation angle, enabling accurate switching of color chips on the flexible filter and improving the accuracy of spectral adjustment. The coil spring not only drives the synchronous and stable rotation of the two reels, but also provides stable tension during the unwinding or rewinding of the flexible filter, preventing the filter from loosening or deforming, thereby improving the stability of spectral adjustment.

[0027] 3. A removable cover on top of the base housing facilitates installation and maintenance of internal components. The slideway and positioning grooves between the base housing's inner bottom wall and the cover's inner top wall ensure smooth shutter movement and precise positioning of the semi-blind shield and filter frame, respectively, enhancing system reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram showing the internal structure of the base shell in an embodiment of the present application.

[0030] Figure 3 This is a cross-sectional view showing the connection relationship between the filter frame, the reel and the drum in the embodiment of the present application.

[0031] Figure 4 It is a cross-sectional view showing the connection relationship between the semi-bright shading sheet and the positioning plate in the embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1. Base shell; 11. Light-transmitting hole; 12. Slide; 13. Positioning groove; 2. Shutter; 3. Semi-light shielding plate; 31. Snap-fit ​​groove; 4. Filter unit; 41. Filter frame; 411. Door frame; 412. Bottom plate; 4121. Positioning recess; 42. Scroll; 421. Scroll; 4211. Guide key; 422. Guide groove; 43. Flexible filter; 431. Color card; 44. Servo motor; 5. Cover plate; 6. Cylinder; 61. Rubber sleeve; 7. Ball bearing; 8. Coil spring; 9. Positioning plate; 91. Snap-fit ​​block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a solar simulator spectral filter adjustment system.

[0036] Reference Figure 1 A solar simulator spectral filter adjustment system includes a base shell 1 having a light-transmitting hole 11 extending perpendicularly to its length. A shutter 2 is slidably mounted within the base shell 1 near the light-transmitting hole 11 on the side facing the light. A semi-light shielding sheet 3 is mounted within the base shell 1 near the light-transmitting hole 11 on the side facing away from the light-transmitting hole 11, covering the light-transmitting hole 11. A filter 4 is disposed between the semi-light shielding sheet 3 and the shutter 2.

[0037] Reference Figure 1During the operation of the spectral filter adjustment system, the shutter 2 slides to the light-transmitting hole 11 on the light-facing side and is in the open state. The light source enters the base shell 1 from the light-transmitting hole 11 and then passes through the filter 4. The wavelength band light filtered by the filter 4 then passes through the semi-light shielding plate 3. Finally, after the extinction treatment of the semi-light shielding plate 3, it leaves the base shell 1 from the light-transmitting hole 11 and irradiates the test sample.

[0038] Reference Figure 1 and Figure 2 A cover plate 5 is sleeved on the top of the base shell 1, and the base shell 1 and the cover plate 5 are connected by bolts, and a slide 12 is provided between the inner bottom wall of the base shell 1 and the inner top wall of the corresponding cover plate 5 corresponding to the shutter 2, and a positioning groove 13 is provided corresponding to the semi-light shielding sheet 3 and the filter frame 41.

[0039] Reference Figure 2 A cylinder 6 is fixedly mounted on the side wall of the base housing 1. The piston rod of the cylinder 6 slides through the base housing 1 and into the interior. A hard rubber sleeve 61 is fixedly mounted on the end of the piston rod. The rubber sleeve 61 is vertically mounted on the frame of the shutter 2, clamping the shutter 2 horizontally. The shutter 2 slides in engagement with the slideway 12, and the extension and contraction direction of the piston rod of the cylinder 6 is parallel to the length of the slideway 12.

[0040] Reference Figure 3 The filter unit 4 includes a filter frame 41, a reel 42, a flexible filter 43, and a servo motor 44. The filter frame 41 includes a door-shaped frame 411 and a bottom plate 412. The bottom plate 412 is bolted to the bottom end of the door-shaped frame 411. Two reels 42 are provided and rotatably mounted on the inner top wall of the door-shaped frame 411. The reels 42 are distributed on both sides of the light-transmitting hole 11 along the length of the base shell 1. A positioning recess 4121 is integrally formed on the bottom plate 412 for each reel 42. The end of the reel 42 is inserted into the positioning recess 4121 and rotates in engagement with the positioning recess 4121. A plurality of balls 7 are fixed on the inner side wall of the positioning recess 4121. The end of the reel 42 inserted into the positioning recess 4121 fits snugly between the balls 7.

[0041] Reference Figure 3 The servo motor 44 is fixedly arranged on the top wall of the door-shaped frame 411, and its output shaft rotates and passes through the top wall of the door-shaped frame 411, and is coaxially fixedly connected to the top of one of the reels 42. A coil spring 8 is arranged between the top ends of the two reels 42, and one end of the coil spring 8 is rotatably sleeved on the top end of the reel 42 connected to the servo motor 44. The end of the coil spring 8 facing away from the servo motor 44 is fixedly connected and wound on the top end of the other reel 42.

[0042] Reference Figure 3When the flexible filter 43 is fully extended, several color chips 431 matching different spectral bands of sunlight are distributed along its length. The size of each color chip 431 matches the light transmission hole 11. Furthermore, a reel 421 is fixedly connected to each sidewall of the fully extended flexible filter 43. A guide key 4211 is fixedly provided on the inner wall of the reel 421 along its length. A guide slot 422 is provided on the outer wall of the reel 42 along its length. The guide keys 4211 correspond to the guide slots 422 and are pluggable.

[0043] Reference Figure 2 and Figure 4 A vertical positioning plate 9 is fixedly provided on both sides of the positioning groove 13 on the inner bottom wall of the base shell 1 along the light input direction, and a hemispherical clamping block 91 is fixedly provided on the opposite side walls of the two positioning plates 9. The positioning plate 9 is supported by an elastic material, and a clamping groove 31 is provided on the side wall of the outer shell of the semi-light shielding sheet 3 to be plugged into and cooperate with the clamping block 91.

[0044] The implementation principle of a spectral filter adjustment system for a solar simulator in an embodiment of the present application is as follows: during the operation of the spectral filter adjustment system, the cylinder 6 drives the shutter 2 to slide, so that the light-transmitting hole 11 on the light-facing side is in an open state; the light source enters the base shell 1 from the light-transmitting hole 11, and then passes through the color card 431 on the flexible filter 43 that covers the light-transmitting hole 11 at this time. The wavelength light filtered by the specific color card 431 then passes through the semi-light shading plate 3, and finally leaves the base shell 1 from the light-transmitting hole 11 after being extinct by the semi-light shading plate 3 and irradiates the test sample.

[0045] During this process, when the color card 431 needs to be replaced, the servo motor 44 is driven to work, and the servo motor 44 drives the reel 42 to rotate until the color card 431 that meets the requirements is rotated out from the reel 421 until it covers the light-transmitting hole 11, thereby achieving high-precision adjustment of the solar simulator spectrum.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A solar simulator spectral filter adjustment system, characterized in that , comprising a base shell (1), wherein the base shell (1) is provided with a light-transmitting hole (11) in a direction perpendicular to its own length, wherein a shutter (2) for opening and closing the light-transmitting hole (11) is slidably provided at the light-transmitting hole (11) on the side close to the light-facing surface in the base shell (1), wherein a semi-light-shielding sheet (3) is provided at the light-transmitting hole (11) on the side away from the light-facing surface in the base shell (1), wherein the semi-light-shielding sheet (3) covers the light-transmitting hole (11), wherein a filter portion (4) is provided between the semi-light-shielding sheet (3) and the shutter (2), wherein the filter portion (4) comprises a filter frame ( 41), two reels (42) rotatably arranged in the filter frame (41), a flexible filter (43) wound together on the two reels (42), and a servo motor (44) driving the reels (42) to rotate, the two reels (42) being distributed on both sides of the light transmission hole (11) along the length direction of the base shell (1), when the flexible filter (43) is fully unfolded, a plurality of color cards (431) matching different spectral bands of sunlight are distributed along its own length direction, and the size of each color card (431) is matched with the light transmission hole (11).

2. A solar simulator spectral filter adjustment system according to claim 1, characterized in that: The servo motor (44) is coaxially connected to the top of one of the reels (42), and a coil spring (8) is provided between the tops of the two reels (42). One end of the coil spring (8) is sleeved on the top of the reel (42) connected to the servo motor (44), and the end of the coil spring (8) facing away from the servo motor (44) is connected to and wound on the top of the other reel (42).

3. A solar simulator spectral filter adjustment system according to claim 1, characterized in that The top of the base shell (1) is detachably provided with a cover plate (5), and a slideway (12) is provided between the inner bottom wall of the base shell (1) and the inner top wall of the corresponding cover plate (5) in cooperation with the shutter (2), and a positioning groove (13) is provided in cooperation with the corresponding semi-light shielding plate (3) and the filter frame (41).

4. A solar simulator spectral filter adjustment system according to claim 3, characterized in that A cylinder (6) is provided on the side wall of the base shell (1), a piston rod of the cylinder (6) slides through the base shell (1) and enters the interior, and an end of the piston rod is connected to the frame of the shutter (2).

5. A solar simulator spectral filter adjustment system according to claim 3, characterized in that The filter frame (41) includes a door-shaped frame (411) and a bottom plate (412) detachably connected to the bottom end of the door-shaped frame (411). The two side walls of the fully unfolded flexible filter (43) are connected to a reel (421). A guide key (4211) is provided on the inner wall of the reel (421) along its own length direction. A guide groove (422) is provided on the outer wall of the reel (42) along its own length direction. The guide key (4211) corresponds to the guide groove (422) one by one and is plug-fitted.

6. A solar simulator spectral filter adjustment system according to claim 5, characterized in that A positioning recess (4121) is provided on the bottom plate (412) corresponding to each reel (42), and the end of the reel (42) is inserted into the positioning recess (4121) and rotates with the positioning recess (4121).

7. A solar simulator spectral filter adjustment system according to claim 6, characterized in that A plurality of balls (7) are arranged on the inner side wall of the positioning recess (4121), and the reel (42) is inserted into the end portion of the positioning recess (4121) and is fitted between the balls (7).

8. A solar simulator spectral filter adjustment system according to claim 3, characterized in that A positioning groove (13) for placing the semi-light shielding sheet (3) on the inner bottom wall of the base shell (1) is provided with positioning plates (9) vertically on both sides along the light-entering direction, and a hemispherical clamping block (91) is provided on the opposite side walls of the two positioning plates (9). The positioning plates (9) are supported by an elastic material, and a clamping groove (31) for plugging and matching with the clamping block (91) is provided on the side wall of the shell of the semi-light shielding sheet (3).

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