CN106918518B - Photovoltaic cell piece bending resistance endurance test device - Google Patents
Photovoltaic cell piece bending resistance endurance test device Download PDFInfo
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- CN106918518B CN106918518B CN201710306978.4A CN201710306978A CN106918518B CN 106918518 B CN106918518 B CN 106918518B CN 201710306978 A CN201710306978 A CN 201710306978A CN 106918518 B CN106918518 B CN 106918518B
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- photovoltaic cell
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- support column
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- 238000005452 bending Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 230000003068 static effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000010835 comparative analysis Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention provides a photovoltaic cell bending resistance endurance test device, wherein a middle position of a photovoltaic cell is fixed through a holding part, a rolling wheel is arranged at the edge of the photovoltaic cell, the photovoltaic cell is bent, and the photovoltaic cell is circularly bent along with the movement of the rolling wheel, so that the endurance performance of the whole photovoltaic cell is detected, the detection efficiency is improved, and a powerful data basis is provided for implementation effects of related processes or improvement measures.
Description
Technical Field
The invention relates to a testing device, in particular to a photovoltaic cell bending resistance endurance testing device.
Background
The thickness of the universal battery piece in the photovoltaic industry is 180-200 mu m, and as the thickness of the silicon wafer is thinned, when the thickness is below 200 mu m, the breakage rate of the silicon wafer is obviously increased, and the yield is reduced.
In order to increase the production efficiency, improvement activities of the breaking rate of the silicon wafer are always carried out, tooling improvement and packaging improvement of the production line are carried out, and improvement is carried out from the product itself, such as improvement of the production process, raw material components and the like, the improvement effect is generally represented by the breaking force, bending deflection and other mechanical strength of the broken battery pieces, but the breaking rate of the battery pieces is not completely proportional to the mechanical strength, and sometimes the breaking of the battery pieces occurs after transportation and actual use, so the breaking rate of the battery pieces is more related to the durability of the mechanical strength of the battery pieces.
The existing endurance test device for bending resistance of the battery piece is mainly used for repeatedly bending the local position of the battery piece, and after one position of the battery piece is tested, the position test is adjusted, so that the test efficiency is low, and the bending resistance of the whole battery piece cannot be reflected.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a device for testing bending resistance and durability of a circulating photovoltaic cell.
In order to achieve the above purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: a photovoltaic cell bending resistance endurance test device, comprising:
the upper part of the movable bracket is provided with a rolling wheel which is abutted against the edge part of the photovoltaic cell piece;
the upper part of the static bracket is provided with a holding part which is used for fixing the center position of the photovoltaic cell;
the upper part of the movable support column assembly is connected with the movable bracket, and the lower part of the movable support column assembly is provided with a sliding block;
the upper part of the fixed bracket is connected with the static bracket;
a slide rail in which the slider slides in a slide groove thereof;
and the driving device drives the movable pillar assembly to slide along the sliding track.
Compared with the prior art, the photovoltaic cell is fixed at the middle position by the holding part, the rolling wheel is arranged at the edge of the photovoltaic cell, the photovoltaic cell is bent, and the photovoltaic cell is circularly bent along with the movement of the movable support column assembly, so that the durability of the whole photovoltaic cell is detected, the detection efficiency is improved, and a powerful data basis is provided for the implementation effect of related processes or improvement measures.
Further, the holding member is a suction cup, preferably a vacuum suction cup.
By adopting the preferable scheme, the tested photovoltaic cell can be fast fixed, the contact is more sufficient, and no extra damage is generated to the photovoltaic cell.
Further, the fixed support is connected with a height adjusting mechanism for adjusting the height difference between the rolling wheel and the holding part.
Further, the fixed support is also provided with a height difference indicating scale.
By adopting the preferable scheme, the bending quantity of the photovoltaic cell is adjusted according to the height difference indication scale, the adjustment is convenient, and the universality of the device is improved.
Further, a plurality of sets of the mobile strut assemblies are included.
By adopting the preferable scheme, the photovoltaic cell can be detected in a plurality of bending modes.
Further, the driving device comprises a driving motor and a connecting rod, one end of the connecting rod is connected with the driving end of the driving motor, and the other end of the connecting rod is connected with the movable support column assembly.
By adopting the preferable scheme, the structure is simple, one or more groups of movable pillar assemblies are driven to circularly move on the sliding track through the connecting rod by the rotation of the driving motor, and the operation is stable.
Further, the mobile strut assembly includes an overload protection mechanism; the overload protection mechanism comprises a movable support column, a stop sleeve, balls, a compression spring and an adjusting ring, wherein an annular groove is formed in the movable support column, the stop sleeve is sleeved on the movable support column, a round hole is formed in the position corresponding to the annular groove, the balls are arranged in the round hole, the inclined surface of the compression spring is abutted against the balls, the compression spring is abutted against the compression ring, the other end of the compression spring is abutted against the adjusting ring, and the adjusting ring is connected with a cylinder body of the stop sleeve through threads.
By adopting the preferable scheme, the adjusting ring can adjust the overload pressure or the thrust, when the load applied by the photovoltaic cell to the movable support column exceeds a set value, the ball can jump out of the annular groove, and the movable support column can downwards move relative to the stop sleeve, so that the photovoltaic cell is prevented from being damaged by mistake.
Further, the movable support column assembly further comprises a failure detection mechanism, the failure detection mechanism comprises a sleeve, a spring, an adjusting rod and a detection sensor, the sleeve is sleeved at the tail of the movable support column, the spring abuts against the lower end face of the movable support column, the adjusting rod is connected into a threaded hole in the inner cavity of the sleeve through threads, the adjusting rod abuts against the other end of the spring, the detection sensor is mounted on the barrel body of the sleeve, and the detection sensor is used for detecting a downward movement signal of the tail of the movable support column.
By adopting the preferable scheme, the setting of losing force can be adjusted by the adjusting rod, when the photovoltaic cell piece is broken in the endurance test, and the movable support posts push the photovoltaic cell piece upwards, the pressure of the photovoltaic cell piece to the movable support posts is obviously reduced, at the moment, the movable support posts do not move downwards relative to the sleeve, the detecting sensor can not detect the downward movement signal of the tail part of the movable support posts, an alarm is generated, the invalidation of the photovoltaic cell piece can be found in time, and the contrast analysis of the endurance time is facilitated.
Further, the sliding block is installed at the bottom of the sleeve, and the connecting rod is connected to the sleeve body.
With the adoption of the preferable scheme, the movable pillar assembly with overload protection and failure detection can stably run along the sliding track.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic top view of the glide track of the present invention;
FIG. 3 is a schematic diagram of the structure of an embodiment of the present invention;
FIG. 4 is a schematic diagram of the structure of an embodiment of the present invention;
FIG. 5 is a schematic illustration of one manner of bending a photovoltaic cell according to the present invention;
FIG. 6 is a schematic illustration of one manner of bending a photovoltaic cell according to the present invention;
FIG. 7 is a schematic illustration of one manner of bending a photovoltaic cell according to the present invention;
fig. 8 is a schematic structural view of the mobile strut assembly of the present invention.
Names of the corresponding parts indicated by numerals and letters in the drawings:
1-a movable bracket; 11-rolling wheels; 2-static brackets; 21-a holding member; 3-moving a strut assembly; 31-overload protection mechanism; 310-moving the struts; 311-stop sleeve; 312-balls; 313-press ring; 314-a compression spring; 315-adjusting ring; 32-failure detection means; 320-sleeve; 321-a spring; 322-adjusting the rod; 323-a detection sensor; 33-a slider; 4-fixing a bracket; 5-a glide track; 6-a driving device; 61-driving a motor; 62-connecting rod; 7-photovoltaic cell.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a photovoltaic cell bending resistance endurance test device includes: the upper part of the movable bracket 1 is provided with a rolling wheel 11, and the rolling wheel 11 is abutted against the edge part of the photovoltaic cell; the upper part of the static bracket 2 is provided with a holding part 21, and the holding part 21 is used for fixing the center position of the photovoltaic cell; a movable support column assembly 3, the upper part of which is connected with the movable bracket 1, and the lower part of which is provided with a sliding block 33; the upper part of the fixed bracket 4 is connected with the static bracket 2; a slide rail 5 in which the slider 33 slides in a slide groove thereof; a driving device 6 for driving the movable pillar assembly 3 to slide along the sliding rail 5; there is a difference in height between the contact positions of the rolling wheel 11, the holding member 21 and the battery piece.
As shown in fig. 2, the sliding rail 5 matches the profile of the photovoltaic cell.
The beneficial effects of adopting above-mentioned technical scheme are: the middle position of the photovoltaic cell is fixed through the holding part 21, the rolling wheel 11 is arranged at the edge of the photovoltaic cell, the photovoltaic cell is bent, and the photovoltaic cell is circularly bent along with the movement of the movable support column assembly 3, so that the durability of the whole photovoltaic cell is detected, the detection efficiency is improved, and a powerful data basis is provided for the implementation effect of related processes or improvement measures.
In other embodiments of the invention, as shown in fig. 3-4, for the purpose of providing more test modes, the rolling wheel 11 is in the form of double balls in fig. 3, and the photovoltaic cell 7 is arranged between the balls; in fig. 4, the roller 11 is set to different heights in order to realize the twist endurance test for the photovoltaic cell 7. The beneficial effects of adopting above-mentioned technical scheme are: the photovoltaic cell piece edge can be better clamped, and richer testing modes are provided.
In other embodiments of the present invention, the holding member 21 is a suction cup, preferably a vacuum suction cup, for the purpose of conveniently fixing the battery cells. The beneficial effects of adopting above-mentioned technical scheme are: the tested photovoltaic cell can be fast fixed, the contact is more sufficient, and no extra damage is generated to the photovoltaic cell.
In other embodiments of the present invention, for the purpose of adjusting the amount of bending, the fixing bracket 4 is connected with a height adjusting mechanism for adjusting the height difference between the rolling wheel 11 and the holding member 21; the fixed support 4 is also provided with a height difference indicating scale. The beneficial effects of adopting above-mentioned technical scheme are: the bending quantity of the photovoltaic cell is adjusted according to the height difference indication scale, the adjustment is convenient, and the universality of the device is improved.
In other embodiments of the present invention, multiple sets of moving strut assemblies 3 are included for the purpose of bending the photovoltaic cell in a variety of ways. The beneficial effects of adopting above-mentioned technical scheme are: various bending modes can be selected to detect the photovoltaic cell.
As shown in fig. 5, 4 rolling wheels 11 are provided to simulate the durability test of the photovoltaic cell 7 in a severe bending state of the photovoltaic cell 7, wherein the 4 rolling wheels are rotated at the same time in a circulating manner.
As shown in fig. 6 to 7, 2 rolling wheels 11 are provided to perform bending endurance test on the photovoltaic cell 7, and as the 2 rolling wheels 11 move, the middle bending line of the photovoltaic cell 7 changes along with the movement of the rolling wheels 11, and the middle bending line is gradually changed from the middle bending line in fig. 6 to the diagonal line position in fig. 7, so that the whole photovoltaic cell is subjected to cyclic bending test everywhere.
In other embodiments of the present invention, for the purpose of stably driving the moving strut assembly, the driving device 6 includes a driving motor 61 and a link 62, and one end of the link 62 is connected to the driving end of the driving motor 61, and the other end is connected to the moving strut assembly 3. The beneficial effects of adopting above-mentioned technical scheme are: the structure is simple, one or more groups of movable strut assemblies 3 are driven to circularly move on the sliding track 5 through the connecting rod 62 by the rotation of the driving motor 61, and the operation is stable.
In other embodiments of the invention, as shown in fig. 8, the mobile prop assembly 3 comprises an overload protection mechanism 31 for the purpose of overload protection; the overload protection mechanism 31 comprises a movable support 310, a stop sleeve 311, balls 312, a compression ring 313, a compression spring 314 and an adjusting ring 315, wherein an annular groove is formed in the movable support 310, the stop sleeve 311 is sleeved on the movable support 310, a round hole is formed in the position corresponding to the annular groove, the balls 312 are arranged in the round hole, the inclined surface of the compression ring 313 is abutted against the balls 312, the compression spring 314 is abutted against the compression ring 313, the other end of the compression spring 314 is abutted against the adjusting ring 315, and the adjusting ring 315 is connected to a cylinder body of the stop sleeve 311 through threads. The beneficial effects of adopting above-mentioned technical scheme are: the adjusting ring 315 can adjust the overload pressure or thrust, when the load applied by the photovoltaic cell to the movable support 310 exceeds a set value, the balls 312 will jump out of the annular groove, and the movable support 310 will move downward relative to the stop sleeve 311, so as to prevent the photovoltaic cell from being damaged by mistake.
In other embodiments of the present invention, to achieve the purpose of failure detection, the moving pillar assembly 3 further includes a failure detection mechanism 32, where the failure detection mechanism 32 includes a sleeve 320, a spring 321, an adjusting rod 322, and a detection sensor 323, the sleeve 320 is sleeved at the tail of the moving pillar 310, the spring 321 abuts against the lower end surface of the moving pillar 310, the adjusting rod 322 is connected in a threaded hole in an inner cavity of the sleeve 320 through threads, the adjusting rod 322 abuts against the other end of the spring 321, the detection sensor 323 is installed on a barrel body of the sleeve 320, and the detection sensor 323 is used for detecting a downward movement signal of the tail of the moving pillar 310. The beneficial effects of adopting above-mentioned technical scheme are: the adjusting rod 322 can adjust the setting of losing force, when the photovoltaic cell is broken in the endurance test, and the movable support 310 pushes the photovoltaic cell upwards, the pressure of the photovoltaic cell to the movable support 310 is obviously reduced, at this time, the movable support 310 will not move downwards relative to the sleeve 320, the detecting sensor 323 can not detect the downward movement signal of the tail part of the movable support 310, an alarm is generated, the failure of the photovoltaic cell can be found in time, and the comparative analysis of the endurance time is facilitated.
In other embodiments of the present invention, the slider 33 is mounted at the bottom of the sleeve 320 for stable operation, and the link 62 is connected to the barrel of the sleeve 320. The beneficial effects of adopting above-mentioned technical scheme are: the movable pillar assembly with overload protection and failure detection can stably run along the sliding track.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, but not limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a photovoltaic cell piece bending resistance endurance test device which characterized in that includes:
the upper part of the movable bracket is provided with a rolling wheel which is abutted against the edge part of the photovoltaic cell piece;
the upper part of the static bracket is provided with a holding part which is used for fixing the center position of the photovoltaic cell;
the upper part of the movable support column assembly is connected with the movable bracket, and the lower part of the movable support column assembly is provided with a sliding block;
the upper part of the fixed bracket is connected with the static bracket;
a slide rail in which the slider slides in a slide groove thereof;
the driving device drives the movable pillar assembly to slide along the sliding track; wherein the method comprises the steps of
The contact positions of the rolling wheel, the holding part and the battery piece are different in height.
2. The device for testing the bending durability of a photovoltaic cell according to claim 1, wherein the holding member is a vacuum chuck.
3. The device for testing the bending durability of the photovoltaic cell according to claim 2, wherein the fixing bracket is connected with a height adjusting mechanism for adjusting the height difference between the rolling wheel and the holding member.
4. The device for testing the bending durability of the photovoltaic cell according to claim 3 wherein the fixing bracket is further provided with a height difference indicating scale.
5. The device for testing the bending durability of a photovoltaic cell according to claim 1, comprising a plurality of sets of said movable strut assemblies.
6. The bending durability test device for photovoltaic cells according to claim 5 wherein the driving device comprises a driving motor and a connecting rod, one end of the connecting rod is connected with the driving end of the driving motor, and the other end of the connecting rod is connected with the movable pillar assembly.
7. The device of claim 6, wherein the mobile strut assembly comprises an overload protection mechanism.
8. The photovoltaic cell bending resistance endurance test device according to claim 7, wherein the overload protection mechanism comprises a movable support, a stop sleeve, a ball, a compression ring, a pressure spring and an adjusting ring, the movable support is provided with an annular groove, the stop sleeve is sleeved on the movable support, a round hole is formed in the position corresponding to the annular groove, the ball is installed in the round hole, the inclined surface of the compression ring is abutted against the ball, the pressure spring is abutted against the compression ring, the other end of the pressure spring is abutted against the adjusting ring, and the adjusting ring is connected to a cylinder body of the stop sleeve through threads.
9. The bending resistance and durability test device for a photovoltaic cell according to claim 8, wherein the movable support column assembly further comprises a failure detection mechanism, the failure detection mechanism comprises a sleeve, a spring, an adjusting rod and a detection sensor, the sleeve is sleeved at the tail of the movable support column, the spring is abutted against the lower end face of the movable support column, the adjusting rod is connected in a threaded hole in an inner cavity of the sleeve through threads, the adjusting rod is abutted against the other end of the spring, the detection sensor is installed on a cylinder body of the sleeve, and the detection sensor is used for detecting a downward movement signal of the tail of the movable support column.
10. The device for testing the bending durability of the photovoltaic cell according to claim 9, wherein the sliding block is installed at the bottom of the sleeve, and the connecting rod is connected to the sleeve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710306978.4A CN106918518B (en) | 2017-05-04 | 2017-05-04 | Photovoltaic cell piece bending resistance endurance test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710306978.4A CN106918518B (en) | 2017-05-04 | 2017-05-04 | Photovoltaic cell piece bending resistance endurance test device |
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| CN106918518A CN106918518A (en) | 2017-07-04 |
| CN106918518B true CN106918518B (en) | 2023-10-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107817178B (en) * | 2017-10-31 | 2019-12-06 | 瑞安市佰乐雅工艺品有限公司 | Arm strength stick testing arrangement |
| CN112003565B (en) * | 2020-08-21 | 2022-04-29 | 理天光电科技(苏州)有限公司 | Flexible battery bending test device |
| CN112858258A (en) * | 2020-12-29 | 2021-05-28 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic device dynamic EL test equipment and test method |
| CN114136775B (en) * | 2021-11-18 | 2023-12-12 | 安徽科技学院 | Performance test device for low-dimensional photoelectric material |
| CN116879004B (en) * | 2023-07-31 | 2024-02-13 | 扬州中环半导体科技有限公司 | Photovoltaic cell piece bending resistance endurance test device |
| CN116989970B (en) * | 2023-09-27 | 2023-12-08 | 四川泽丰锂能新能源科技有限公司 | New energy battery pack impact resistance detection device and use method |
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| CN101271052A (en) * | 2008-04-08 | 2008-09-24 | 广西工学院 | Flat plate fatigue bending machine |
| CN101308072A (en) * | 2008-07-08 | 2008-11-19 | 武汉钢铁(集团)公司 | Steel plate full-automatic back-and-forth bending test machine |
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