Device for attenuating light intensity of solar simulator
By designing an adjustable solar simulator light intensity attenuation device, the use of nickel wire material and transmission structure to achieve flexible adjustment of light intensity in high temperature environments, solving the problem of single and unstable attenuation degree in the prior art, and satisfying the deep space The light intensity simulation requirements in the field of detection and meet the spectral and irradiation performance of the Class 3A standard.
Patent Information
- Application Number
- CN202323609681.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The attenuation degree of existing solar simulator light intensity attenuation devices is single, and cannot be adjusted, and cannot meet the simulation requirements of different light intensities in the field of deep space exploration, and is unstable in high temperature environments.
Design a device including a light-shielding base, upper and lower wire mesh and transmission structure, and adjustable light intensity attenuation degree through adjustment knobs and chain slots. Use nickel wire material to ensure operation in 500℃ environment, transmission chain and connection bracket Ensure transmission efficiency.
It realizes flexible adjustment of the light intensity of the solar simulator, meets the simulation requirements of different light intensity, ensures stability and effectiveness in high temperature environments, and spectral mismatch, irradiation unevenness and irradiation instability that meet the 3A standard degree requirements.
Smart Images
Figure CN222278327U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of solar simulator testing, in particular to a device for attenuating the light intensity of a solar simulator. Background Art
[0002] As a device that simulates sunlight, the solar simulator can adjust the light intensity of the solar simulator by adjusting the power. The light intensity of the solar simulator can reach a solar constant (1353W / m2).
[0003] With the continuous development and progress of my country in the field of deep space exploration, the design of spacecraft solar arrays needs to adapt to different distances between the sun and the earth. The distance between the sun and the earth is correlated with the light intensity. The greater the distance between the sun and the earth, the weaker the sunlight intensity. For example, the moon is 380,000 kilometers away from the earth, but Mars is more than 55 million kilometers away from the earth at its closest distance, which is more than 100 times the distance between the earth and the moon. The intensity of sunlight that Mars can receive is lower. Therefore, when designing a solar array that can generate sustainable electricity on a satellite, it is necessary to fully consider the impact of light intensity on solar cell testing. Since the current solar simulator has an adjustable light intensity range of 0.8AM0-1.2AM0, when it exceeds this adjustment range, the light intensity will fluctuate and cannot meet the requirements of light source instability. Therefore, when testing solar cells on the ground, the solar simulator should be modified so that its light intensity can simulate light intensities of different intensities in the field of deep space exploration. The existing light intensity attenuation device has a single attenuation degree, and it is impossible to achieve an adjustable attenuation ratio, and the application scenario is relatively limited.
[0004] Therefore, designing a solar simulator light intensity attenuation device with adjustable attenuation degree is of great significance for project research and engineering batch production applications. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a device for attenuating the light intensity of a solar simulator, which is particularly suitable for situations where the light attenuation degree needs to be adjusted without replacing the screen.
[0006] The technical solution adopted by the utility model is: a device for attenuating the light intensity of a solar simulator, comprising: a device main body, used to attenuate the light intensity emitted by the solar simulator; an adjustment structure, used to adjust the degree of attenuation of the light intensity of the solar simulator by the device main body; a transmission structure, used to play a transmission role between the adjustment structure and the device main body, one end of the transmission structure is connected to the adjustment structure, and the other end is connected to the device main body.
[0007] Furthermore, the device body includes: a shading base, which is arranged at the lower part of the device body; a lower wire mesh, which is arranged on the shading base; an upper wire mesh, which is arranged in the middle part of the device body and cooperates with the shading base; a rotating handle, which is arranged on the upper wire mesh; and a base pressure ring, which is arranged at the upper part of the device body and cooperates with the shading base.
[0008] Furthermore, the adjustment structure includes: an adjustment knob, which is arranged at the center of the adjustment structure; and a chain slot, which is arranged outside the adjustment structure and cooperates with the adjustment knob.
[0009] Furthermore, the transmission structure includes: a transmission chain, which cooperates with the adjustment structure and the device body; and a connecting bracket, one end of which is connected to the adjustment structure and the other end is connected to the device body.
[0010] Furthermore, the upper wire mesh and the lower wire mesh are made of nickel wire.
[0011] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical scheme, the upper and lower screens in the device are made of nickel wire, which enables the device to work effectively inside a simulator at 500°C; the upper and lower screens of different specifications are matched, and the rotating handle is adjusted by adjusting the knob, so that different degrees of light intensity attenuation can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of an embodiment of the utility model
[0013] Figure 2 This is a schematic diagram of the main structure of the device of an embodiment of the utility model
[0014] Figure 3 This is a schematic diagram of the spectrum distribution of an embodiment of the utility model
[0015] In the figure:
[0016] 100, device body 101, light shielding base 102, lower screen
[0017] 103, upper screen 104, rotating handle 105, base pressure ring
[0018] 200, adjustment structure 201, adjustment knob 202, chain slot
[0019] 300, transmission structure 301, transmission chain 302, connecting bracket DETAILED DESCRIPTION
[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0021] The technical solution of the utility model is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
[0022] like Figure 1-2 As shown, the utility model provides a device for attenuating the light intensity of a solar simulator, which is used to attenuate the light intensity of the solar simulator to a target light intensity. The device comprises a device body 100, an adjustment structure 200 and a transmission structure 300, one end of the transmission structure 300 is connected to the device body 100, and the other end is connected to the adjustment structure 200; the device body 100 is used as a part for attenuating light intensity, and comprises a shading base 101, a lower screen 102, an upper screen 103, a rotating handle 104 and a base pressing ring 105, the shading base 101 is located at the lower part of the device body 100, the lower screen 102 is arranged on the shading base 101, the upper screen 103 is located in the middle of the device body 100, the rotating handle 104 is arranged on the upper screen 103, the base pressing ring 105 is located at the upper part of the device body 100, the base pressing ring 105 cooperates with the shading base 101, and the rotating handle 104 located between the two is placed in the missing arc; the adjustment structure 200 is used to adjust the light intensity attenuation of the solar simulator The amplitude of reduction includes an adjusting knob 201 and a chain slot 202. The adjusting knob 201 is arranged at the center of the adjusting structure 200, and the adjusting knob 201 cooperates with the chain slot 202; the transmission structure 300 is used to transmit between the device body 100 and the adjusting device 200, including a transmission chain 301 and a connecting bracket 302. One end of the connecting bracket 302 is connected to the shading base 101, and the other end is connected to the chain slot 202. The transmission chain 301 is connected end to end, one end is sleeved inside the chain slot 202 and contacts with the adjusting knob 201, and the other end is sleeved on the outside of the shading base 101 and cooperates with the rotating handle 104. When the adjusting knob 201 is rotated, the rotating handle 104 is driven to move, thereby adjusting the overlap of the upper screen 103 and the lower screen 102 to change the light attenuation of the solar simulator. By adopting the above technical solution, using upper screens and lower screens of different specifications for coordination, and then adjusting the rotating handle by adjusting the knob, different degrees of light intensity attenuation can be achieved.
[0023] In a specific embodiment, the upper screen 103 and the lower screen 102 are made of nickel wire, so that the device can work effectively inside a simulator at 500°C.
[0024] Preferably, the shading base 101 is made of stainless steel to ensure that the device body 100 can still be used in a high-temperature solar simulator.
[0025] Preferably, the shading body should be placed between the light source and the integrating mirror of the simulator to ensure that the uniformity of the solar simulator is not affected after the light intensity is attenuated.
[0026] Preferably, the conveyor chain is made of stainless steel.
[0027] Preferably, the device body 100 is made of stainless steel blackened to avoid reflection and scattering of light when the device is placed in the light path of the simulator.
[0028] In the current research, there are three types of low light intensities that are the research focus in special space environments. The following uses αAM0, βAM0 and γAM0 to represent these three low light intensities, where α, β, and γ are all decimals greater than 0 and less than 1, which are defined as light intensity attenuation coefficients.
[0029] Place light intensity attenuation devices of different specifications that meet the three light intensities inside the solar simulator, adjust the power of the solar simulator, and make the light intensity of the solar simulator attenuate to the target light intensity. To measure the effectiveness and implementation effect of the light intensity attenuation device, it is necessary to verify from four angles: light intensity attenuation effect, spectral mismatch of the simulator light source, irradiation unevenness, and irradiation instability. Verify whether the target light intensity is achieved, and verify whether the spectral mismatch, irradiation unevenness, and irradiation instability meet the 3A standard.
[0030] Light intensity attenuation effect: Use the same solar cell and control the temperature at 25℃ to carry out IV tests at four light intensities: AM0, αAM0, βAM0 and γAM0. Calculate the ratio of the short-circuit current Isc at the three light intensities of αAM0, βAM0 and γAM0 to the short-circuit current Isc at the light intensity of AM0. This ratio is the actual attenuation of the three low light intensities. Calculate the deviations between the actual attenuation at the three low light intensities and the light intensity attenuation coefficients α, β and γ. See Table 1 for details.
[0031] Table 1 Deviation between actual attenuation and target light intensity attenuation coefficient at three low light intensities
[0032] Light intensity Deviation from light intensity attenuation coefficient αAM0 -0.1％ βAM0 -0.08％ γAM0 0.06％
[0033] It can be seen from Table 1 that the deviations between the actual attenuation and the light intensity attenuation coefficient under the three target light intensities are all within the allowable error range, conform to the light intensity attenuation ratio, and can meet the light intensity attenuation effect.
[0034] like Figure 3As shown in Table 2, the spectral mismatch of the solar simulator: According to the standard GB / T 6494-2017, the spectral mismatch error of each band of the 3A-level solar simulator should be ≤±25%. The spectral distribution curve is obtained by using a spectrometer to perform a spectral test on the solar simulator with a light intensity attenuation device. The spectral mismatch is shown in Table 2.
[0035] Table 2 Solar simulator spectrum mismatch
[0036]
[0037] It can be seen from Table 2 that the spectral mismatch error of each band range of the solar simulator with the light intensity attenuation device is ≤±25%, which meets the requirements of the 3A-level solar simulator.
[0038] Irradiation non-uniformity: According to the standard GB / T 6494-2017, the irradiation non-uniformity of the 3A-level solar simulator should be ≤±2%. The effective illumination area is evenly divided into 9 areas, and the short-circuit current Isc of the same cell in these 9 areas is tested. The irradiation non-uniformity is calculated according to the formula "irradiation non-uniformity = (Imax-Imin) / (Imax+Imin)×100%". The calculation results are shown in Table 3.
[0039] Table 3 Solar simulator irradiation non-uniformity
[0040]
[0041] It can be seen from Table 3 that the non-uniformity of the solar simulator with the light intensity attenuation device is ±1.43%, which meets the requirements of the 3A-level solar simulator.
[0042] Irradiation instability: According to the standard GB / T 6494-2017, the irradiation instability of the 3A-level solar simulator should be ≤±1%. Use the same battery, record the short-circuit current value of the battery every 1 minute, and record it continuously for 30 times. Calculate the irradiation instability according to the formula "irradiation instability = (Imax-Imin) / (Imax+Imin)×100%". The calculation results are shown in Table 4.
[0043] Table 4 Solar simulator irradiation instability
[0044]
[0045] It can be seen from Table 4 that the irradiation instability of the solar simulator with a light intensity attenuation device is ±0.17%, which meets the requirements of a 3A-level solar simulator.
[0046] Based on the above-mentioned verification of light intensity attenuation effect, spectral mismatch of simulator light source, irradiation unevenness and irradiation instability, the light intensity attenuation device designed by the utility model patent can effectively attenuate the light intensity of the solar simulator, and the solar simulator after placing the light intensity attenuation device meets the A-level standards in terms of spectral mismatch, irradiation unevenness and irradiation instability, meets the requirements of 3A-level solar simulator, and meets the model testing requirements.
[0047] In a specific embodiment, the utility model adopts a device for attenuating the light intensity of a solar simulator, and the working process is as follows: the device body 100 is placed between the light source and the integrating mirror of the solar simulator, and after the adjustment structure 200 and the transmission structure 300 are fixed, the adjustment knob 201 is rotated to adjust the degree of attenuation to be achieved by adjusting the degree of interlacing of the lower screen 102 and the upper screen 103.
[0048] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. A device for attenuating the light intensity of a solar simulator, characterized in that: include: A device body, used to attenuate the light intensity emitted by the solar simulator; An adjustment structure, used for adjusting the degree of attenuation of the light intensity of the solar simulator by the device body; The transmission structure is used to transmit the power between the adjusting structure and the device body. One end of the transmission structure is connected to the adjusting structure, and the other end is connected to the device body.
2. The device for attenuating the light intensity of a solar simulator according to claim 1, characterized in that: The device body comprises: A light-shielding base is arranged at the lower part of the device body; A lower screen is arranged on the light-shielding base; An upper screen is arranged in the middle of the device body and cooperates with the light-shielding base; A rotating handle is arranged on the upper wire mesh; The base pressure ring is arranged on the upper part of the device body and cooperates with the light-shielding base.
3. The device for attenuating the light intensity of a solar simulator according to claim 1, characterized in that: The regulatory structure comprises: An adjustment knob, arranged at the center of the adjustment structure; A chain slot is arranged outside the adjusting structure and cooperates with the adjusting knob.
4. The device for attenuating the light intensity of a solar simulator according to claim 1, characterized in that: The transmission structure comprises: a transmission chain, cooperating with the adjustment structure and the device body; A connecting bracket has one end connected to the adjusting structure and the other end connected to the device body.
5. The device for attenuating the light intensity of a solar simulator according to claim 2, characterized in that: The upper wire mesh and the lower wire mesh are made of nickel wire.