CN109443708B - Irradiation uniformity testing device for solar simulator - Google Patents
Irradiation uniformity testing device for solar simulator Download PDFInfo
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- CN109443708B CN109443708B CN201811448497.8A CN201811448497A CN109443708B CN 109443708 B CN109443708 B CN 109443708B CN 201811448497 A CN201811448497 A CN 201811448497A CN 109443708 B CN109443708 B CN 109443708B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
The invention relates to a solar simulator irradiation uniformity testing device which comprises a substrate and a base for supporting the substrate, wherein a plurality of mutually crossed warps and wefts are scribed on the substrate to form a plurality of positioning reference frames with the same size. In addition, the irradiation uniformity testing device of the solar simulator also comprises a cell adjusting device used for adjusting the position of the cell relative to the positioning reference frame. The battery piece adjusting device comprises a sliding rod and a sliding block which is arranged on the sliding rod and can freely move along the left and right directions, and a positioning groove matched with the appearance of the battery piece is arranged on the sliding block. The sliding rod is arranged on the substrate and can freely move along the up-down direction. In this way, the traditional photovoltaic module substrate is abandoned, and the influence of the traditional photovoltaic module substrate on the test result is eliminated. In addition, the pollution to the battery piece caused by taking and placing the battery piece for many times is avoided in the operation process, and the position of the battery piece is adjusted quickly and accurately.
Description
Technical Field
The invention relates to the technical field of photovoltaic module detection, in particular to a device for testing irradiation uniformity of a solar simulator.
Background
The power test of the photovoltaic module is one of the most important links in the production process of the photovoltaic module, and the common power test method comprises the following steps: the solar simulator emits simulated sunlight to irradiate on the photovoltaic module, and the photovoltaic module is connected to the test instrument to measure the power of the photovoltaic module. Thus, uniformity of solar simulator irradiation is particularly important for test results. At present, a 72P156M photovoltaic module substrate is uniformly divided into 72 lattices for testing the irradiation uniformity of a test simulator in the industry, single battery pieces are sequentially placed in the lattices for testing, then the change of the short-circuit current of the battery pieces under each flash pulse of the solar simulator is collected by a rapid acquisition card and converted into a voltage signal after IV calibration, and therefore the irradiation uniformity change of the solar simulator is obtained. However, in the actual testing process, the existence of the substrate can cause great deviation of the testing result, and further, the accurate evaluation of the irradiation uniformity of the simulator is influenced. Thus, a skilled person is urgently needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a solar simulator irradiation uniformity testing device which is simple in structural design, convenient and quick to adjust, accurate in positioning and free of a substrate of a photovoltaic module.
In order to solve the technical problem, the invention relates to a solar simulator irradiation uniformity testing device which comprises a substrate and a base for supporting the substrate, wherein a plurality of mutually crossed warps and wefts are scribed on the substrate to form a plurality of positioning reference frames with the same size. In addition, the irradiation uniformity testing device of the solar simulator also comprises a cell adjusting device used for adjusting the position of the cell relative to the positioning reference frame. The battery piece adjusting device comprises a sliding rod and a sliding block which is arranged on the sliding rod and can freely move along the left and right directions, and a positioning groove matched with the appearance of the battery piece is arranged on the sliding block. The sliding rod is arranged on the substrate and can freely move along the up-down direction.
According to the technical scheme, the solar simulator irradiation uniformity testing device adopts the base plate as the cell positioning reference, and abandons the traditional photovoltaic module substrate, so that the influence of the base plate on the testing result is eliminated. In addition, the adjustment of the relative position of the battery piece is realized through the sliding rod and the sliding block, so that the pollution to the battery piece caused by taking and placing the battery piece for many times is avoided in the operation process, and the position adjustment of the battery piece is quick and accurate.
As a further improvement of the invention, the number of the warp threads is 7, and the number of the weft threads is 13.
Through adopting the technical scheme to set up to also divide into 72 test positions with the base plate, thereby simulate 72P156M photovoltaic module substrate better.
As a further improvement of the invention, the left and right sides of the base plate are fixedly provided with rotating shafts which extend outwards and can freely rotate relative to the base. The irradiation uniformity testing device of the solar simulator further comprises a limiting device which is fixed on the base and used for locking the rotating angle of the rotating shaft.
Through adopting above-mentioned technical scheme to set up, the base plate can be for the base free rotation, and can carry out the position locking in stop device's supplementary, therefore can be applicable to solar simulator side and polish or polish two kinds of different test scenes on.
As a further improvement of the present invention, a bearing is provided between the rotating shaft and the base.
Through adopting above-mentioned technical scheme to set up, improved the operation flexibility of axis of rotation, and reduced the frictional force between axis of rotation and the base shaft hole.
As a further improvement of the invention, a through hole is arranged on the side wall of the rotating shaft. The limiting device is a pin which is inserted into the base, corresponds to the through hole in position and is matched with the through hole in the direction of the outer diameter.
The mode of adopting the round pin is injectd the turned angle of base plate, and structural design is simple, and the function is reliable, the simple operation.
As a further improvement of the invention, the inner wall of the through hole is provided with a wear-resistant coating.
By adopting the technical scheme, the wear resistance of the through hole matched with the pin is improved, on one hand, the matching precision of the through hole and the pin is ensured, and the accuracy of the positioning angle of the substrate is further ensured; on the other hand, the wear rate of the through hole is reduced, the service life of the rotating shaft is prolonged, and the later maintenance frequency is reduced.
As a further improvement of the invention, the left side and the right side of the base plate are both provided with strip-shaped grooves which are arranged along the length direction of the base plate and are parallel to each other, and correspondingly, the left end part and the right end part of the sliding rod are fixed with square sliding blocks which are matched with the strip-shaped grooves. The square sliding block is made of ferromagnetic materials, and magnets are flatly laid at the bottom of the strip-shaped groove.
The accuracy of the sliding rod along the length direction of the substrate is realized through the mutual matching of the square sliding block and the strip-shaped groove, and the arranged magnet can ensure the positioning reliability of the sliding rod after the sliding rod moves in place.
As a further improvement of the invention, an auxiliary supporting leg is arranged on the lower side surface of the slide rod. The auxiliary support legs comprise rollers which are contacted with the upper plane of the base plate.
Through adopting above-mentioned technical scheme to set up, strengthened the structural stability of slide bar, reduced its downwarping volume to guaranteed the angle uniformity of cell piece relative to solar simulator when each position of testing.
As a further improvement of the invention, a length adjusting device is arranged on the auxiliary supporting leg and used for adjusting the height of the square sliding block relative to the magnet.
Through adopting above-mentioned technical scheme to set up, can adjust the appeal of magnet to square sliding block according to actual need to be convenient for guarantee the slide bar and have the convenience of positioning reliability for the base plate under, further guarantee the operating personnel and remove the slide bar.
As a further improvement of the invention, the length adjusting device comprises a screw rod which is vertically fixed at the upper end part of the auxiliary supporting leg and two nuts which respectively abut against the upper side surface and the lower side surface of the sliding rod and are matched with the screw rod.
After the height of the square sliding block relative to the magnet is adjusted in place, the square sliding block can be locked by two nuts, and the height of the square sliding block is prevented from changing in the long-term use process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of an irradiation uniformity testing apparatus for a solar simulator according to an embodiment of the present invention.
Fig. 2 is a view in the direction a of fig. 1.
Fig. 3 is a partial sectional view B-B of fig. 1.
Fig. 4 is a partial sectional view of C-C of fig. 1.
1-a substrate; 11-positioning a reference frame; 12-strip-shaped grooves; 2-a base; 3-cell adjusting device; 31-a slide bar; 32-a slider; 321-a positioning groove; 33-square slider; 4-a rotating shaft; 41-through holes; 5-pin; 6-a magnet; 7-auxiliary support legs; 8-a length adjustment device; 81-screw rod; 82-a nut; 9-bearing.
Detailed Description
In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the following, the content of the present invention will be further described in detail with reference to specific examples, and fig. 1 and fig. 2 respectively show a front view and an a-direction view of a solar simulator irradiation uniformity testing device according to an embodiment of the present invention, which are composed of a substrate 1, a base 2, and a cell adjusting device 3, wherein the substrate 1 is supported by the base 2, and a plurality of 7 warps and 13 wefts are scribed on the substrate, which intersect with each other, so as to form 72 positioning reference frames 11 with uniform sizes. The battery piece adjusting device 3 is used for adjusting the position of the battery piece relative to the positioning reference frame 11, and includes a sliding rod 31 and a sliding block 32 which is arranged on the sliding rod 31 and can freely move along the left-right direction, and a positioning groove 321 which is matched with the shape of the battery piece is arranged on the sliding block 32. It should be noted that the depth of the positioning groove 321 should not be greater than the thickness of the cell, so as to prevent the edge of the positioning groove 321 from blocking the irradiation light emitted by the solar simulator, which affects the accuracy of the test result. The left side and the right side on the base plate 1 are both provided with strip-shaped grooves 12 which are arranged in parallel along the length direction of the base plate, and correspondingly, the left end part and the right end part of the sliding rod 31 are fixed with square sliding blocks 33 which are matched with the strip-shaped grooves 12, so that the traditional photovoltaic module substrate is abandoned, and the influence of the traditional photovoltaic module substrate on the test result is eliminated. In addition, the pollution to the battery piece caused by taking and placing the battery piece for many times is avoided in the operation process, and the position of the battery piece is adjusted quickly and accurately.
The specific number of warp and weft threads described above can be adjusted according to the actual test requirements. It should be noted that, here, the slide bar 31 may be moved vertically relative to the base plate 1 in a known manner other than the slider-rail engagement described above. To ensure a reliable positioning of the slide rod 31 itself after it has been moved into position, the square slide block 33 can be made of ferromagnetic material, and accordingly the magnet 6 is laid flat at the bottom of the elongated recess 12.
As a further optimization of the irradiation uniformity testing device for the solar simulator, the angle of the substrate 1 relative to the base 2 can be adjusted according to specific conditions, and the specific setting can refer to the following modes: as shown in fig. 3 and 4, a rotating shaft 4 extending outward is fixedly provided on the left and right sides of the base plate 1, and the rotating shaft 4 is rotatably inserted into the base 2. In order to reduce the friction between the rotating shaft 4 and the base shaft hole, a bearing 9 may be provided between the rotating shaft 4 and the base 2. The bearing 9 is preferably a plastic bearing with self-lubricating properties. Furthermore, in order to facilitate the position locking, a limiting device is provided, namely: a through hole 41 is opened in the side wall of the rotating shaft 4. In addition, a pin 5 is provided, which is inserted into the base 2, corresponds to the through hole 41 in position, and has an outer diameter adapted to the through hole 41. Therefore, the irradiation uniformity testing device of the solar simulator can be suitable for two different testing scenes of side polishing or upper polishing of the solar simulator. As a further optimization, a chamfer is provided at the end of the through hole 41 so that the insertion process of the pin 5 is smoothly performed.
Furthermore, a wear-resistant coating (not shown in the figure) can be arranged on the inner wall of the through hole 41, so that on one hand, the matching precision of the pin 5 and the through hole 41 is ensured, and the accuracy of the positioning angle of the substrate 1 is further ensured; on the other hand, the wear rate of the through hole 41 is reduced, the service life of the rotating shaft 4 is prolonged, and the later maintenance frequency is reduced.
Furthermore, in order to enhance the structural stability of the sliding rod 31 and reduce the amount of downward deflection, an auxiliary supporting leg 7 may be provided on the lower side surface of the sliding rod 31, and a roller (not shown) contacting the upper surface of the substrate 1 may be provided at the lower end of the auxiliary supporting leg 7, thereby ensuring the angular uniformity of the cell with respect to the solar simulator at each test site.
Finally, in order to facilitate the adjustment of the height of the square sliding block 33 relative to the magnet 6, the adjustment process is convenient and reliable, and the length adjusting device 8 can be arranged on the auxiliary supporting leg 7, and the recommended setting mode is as follows: the length adjusting device 8 is composed of a screw 81 and two nuts 82 which play a locking role, wherein the screw 81 is vertically fixed at the upper end part of the auxiliary supporting leg 7; two nuts 82 abut against the upper and lower sides of the slide rod 31, respectively. Of course, instead of adjusting the relative distance between the square slider 33 and the magnet 6 to adjust the magnitude of the attractive force in the above-described manner, the magnet 6 may be provided as an electromagnet, and the magnitude of the current may be changed to change the intensity of the magnetic field, thereby adjusting the magnitude of the attractive force between the square slider 33 and the magnet 6.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A solar simulator irradiation uniformity testing device comprises a substrate and a base for supporting the substrate, and is characterized in that a plurality of mutually crossed warps and wefts are engraved on the substrate to form a plurality of positioning reference frames with the same size; the battery piece adjusting device is used for adjusting the position of the battery piece relative to the positioning reference frame; the battery piece adjusting device comprises a sliding rod and a sliding block which is arranged on the sliding rod and can freely move along the left and right directions; a positioning groove matched with the shape of the battery piece is arranged on the sliding block; the sliding rod is arranged on the substrate and can freely move along the up-down direction;
the left side and the right side of the base plate are fixedly provided with rotating shafts extending outwards, so that the rotating shafts can freely rotate relative to the base; the limiting device is fixed on the base and used for locking the rotation angle of the rotating shaft;
a bearing is arranged between the rotating shaft and the base;
a through hole is formed in the side wall of the rotating shaft; the limiting device is a pin which is inserted into the base, corresponds to the through hole in position and is matched with the through hole in outer diameter.
2. The solar simulator irradiance uniformity testing device as claimed in claim 1, wherein the number of the warp threads is 7, and the number of the weft threads is 13.
3. The irradiation uniformity testing device of a solar simulator as defined in claim 1, wherein a wear-resistant coating is provided on the inner wall of the through hole.
4. The irradiation uniformity testing device of the solar simulator according to any one of claims 1 to 3, wherein strip-shaped grooves are formed on the left and right sides of the substrate along the length direction of the substrate and arranged in parallel with each other, and accordingly, square sliding blocks adapted to the strip-shaped grooves are fixed on the left and right end portions of the sliding bar; the square sliding block is made of ferromagnetic materials, and magnets are flatly laid at the bottom of the strip-shaped groove.
5. The irradiation uniformity testing device of the solar simulator according to claim 4, wherein an auxiliary support leg is arranged on the lower side surface of the slide bar; the auxiliary support legs comprise rollers which are in contact with the upper plane of the base plate.
6. The irradiation uniformity testing device of the solar simulator as defined in claim 5, wherein a length adjusting device is provided on the auxiliary support leg for adjusting the height of the square sliding block relative to the magnet.
7. The irradiation uniformity testing device of a solar simulator according to claim 6, wherein the length adjusting device comprises a screw rod vertically fixed on the upper end of the auxiliary supporting leg and two nuts respectively abutting against the upper and lower side surfaces of the sliding rod and adapted to the screw rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811448497.8A CN109443708B (en) | 2018-11-29 | 2018-11-29 | Irradiation uniformity testing device for solar simulator |
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| CN201811448497.8A CN109443708B (en) | 2018-11-29 | 2018-11-29 | Irradiation uniformity testing device for solar simulator |
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| CN109443708B true CN109443708B (en) | 2021-01-01 |
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| CN110492845A (en) * | 2019-09-10 | 2019-11-22 | 天合光能股份有限公司 | A kind of high efficient two-sided solar photovoltaic assembly detection device and detection method |
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