Probe structure for testing solar cell
By designing a probe structure with a three-axis displacement mechanism and a fine-tuning mechanism, the existing probe assembly has solved the problem of low flexibility and poor test accuracy in solar cell testing, and efficient testing of solar cells of different types and sizes is achieved.
Patent Information
- Application Number
- CN202421557610.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing probe modules are not flexible in the IV and EL tests of solar cells, and have poor test accuracy, which makes them unable to adapt to different types and sizes of solar cells, affecting the testing efficiency.
A probe structure including a three-axis displacement mechanism, a support platform, a probe assembly and a fine-tuning mechanism is designed, which can be moved accurately in the three directions of X, Y, and Z, and fine-tuned the probe position and angle to ensure that the probe can be accurately positioned at the test point of the solar cell.
Improves the accuracy and flexibility of testing, can adapt to different types and sizes of solar cells, reduces test preparation time and improves test efficiency.
Smart Images
Figure CN222882747U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar cell testing, in particular to a probe structure used for solar cell testing. Background Art
[0002] IV and EL testing of solar cells are important means of evaluating their performance and defects. IV testing is used to measure the current-voltage characteristic curve of solar cells to evaluate their electrical performance, and EL testing is used to detect defects in solar cells by applying current to make them emit light, and then detecting the light emission pattern through imaging technology.
[0003] In the IV and EL tests of solar cells, the existing probe assemblies have low flexibility and poor test accuracy in the automated testing of solar cells. When the original probe assemblies are replaced with new specifications of batteries for testing, the probes cannot detect the position of the new solar cell electrodes, which seriously affects the test efficiency of the solar cells and has poor applicability to batteries of various sizes. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a probe structure for solar cell testing, which can move accurately in three directions and fine-tune the position and angle of the probe to improve the accuracy of the test and adapt to the testing needs of solar cells of different types and sizes.
[0005] In order to solve the above technical problems, the utility model provides a probe structure for solar cell testing, including a three-axis displacement mechanism, a supporting platform is provided on the three-axis displacement mechanism, a probe assembly is provided on the supporting platform, a fine-tuning mechanism with adjustable steering is provided on the supporting platform, a rotating platform is provided on the fine-tuning mechanism, an adjusting rod is provided on the rotating platform, the probe assembly is provided on the adjusting rod, the probe assembly includes multiple groups of test probes, a distance adjustment knob is provided at one end of the probe assembly close to the adjusting rod, and a probe rotation knob is provided at one end of the probe assembly close to the test probe.
[0006] The probe assembly includes a base, the adjustment rod is passed through the base, an insulating block is provided on the base, a spring sheet is provided on the insulating block, a rotating seat is provided on the spring sheet, the test probe is passed through the rotating seat, the probe rotating knob is fixed on the rotating seat, and a probe tightening knob is threadedly connected to the rotating seat.
[0007] The fine-tuning mechanism comprises a fine-tuning platform, a fine-tuning slide rail is arranged on the fine-tuning platform, a fine-tuning slider is slidably arranged on the fine-tuning slide rail, the rotating platform is rotatably arranged on the fine-tuning slider, and the adjusting rod is arranged on the rotating platform.
[0008] The end of the insulating block is provided with a clamping groove, the adjusting rod is inserted into the clamping groove, and the distance adjusting knob is threadedly connected to one side of the clamping groove.
[0009] The three-axis displacement mechanism comprises a first horizontal displacement platform, on which a first horizontal sliding block is disposed, on which a first sliding rod is disposed, and the first sliding rod is inserted into the first displacement platform.
[0010] A second horizontal displacement platform is disposed on the first slider, a second horizontal displacement platform is disposed on the second horizontal slider, a second sliding rod is disposed on the second horizontal slider, and the second sliding rod is penetrated in the second displacement platform.
[0011] The second horizontal displacement platform, the second horizontal sliding block and the second sliding rod are all arranged perpendicularly to the first horizontal displacement platform.
[0012] A vertical displacement platform is disposed on the second horizontal displacement platform, a vertical slide rail is disposed on the vertical displacement platform, a vertical slider is slidably disposed on the vertical slide rail, and the support platform is disposed on the vertical slider.
[0013] A lever is arranged on the rotating platform.
[0014] The test probes are provided in at least 4 groups, with 2 probes in each group.
[0015] When the utility model is used, the solar cell is installed on the work station, the probe assembly is connected to the test equipment, and the probe assembly is preliminarily positioned by using the three-axis displacement mechanism. The first horizontal slider, the second horizontal slider and the vertical slider are moved to realize the precise positioning of the probe in the three directions of X, Y and Z. The probe is further finely adjusted by using the fine-tuning slide rail and the fine-tuning slider on the fine-tuning platform. The position and angle of the probe can be slightly adjusted by rotating the adjustment rod on the platform to ensure that the probe is in good contact with the surface of the solar cell. The probe assembly is provided with a distance adjustment knob and a probe rotation knob, through which the distance between the probes and the angle of the probe can be adjusted respectively to achieve the best test state. The test probe contacts the electrode of the solar cell, applies current and voltage, and measures the current-voltage characteristic curve of the battery; applies current to make the solar cell emit light, and captures the electroluminescent image through the imaging device. The test equipment records the IV curve and EL image data. By analyzing the IV curve, the efficiency and performance parameters of the solar cell can be evaluated; by analyzing the EL image, the defect location and properties in the battery can be identified.
[0016] The beneficial effects brought by the utility model are:
[0017] The utility model can accurately move in three directions of X, Y and Z, and fine-tune the position and angle of the probe to ensure that the probe can be accurately positioned on the test point of the solar cell, thereby improving the accuracy of the test.
[0018] The utility model can adapt to the testing requirements of solar cells of different types and sizes.
[0019] Multiple sets of probes can test multiple points at the same time, and the probe position and angle can be quickly adjusted to reduce test preparation time and improve test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the utility model.
[0021] Figure 2 It is a structural schematic diagram of the fine-tuning mechanism of the utility model.
[0022] Figure 3 It is a structural schematic diagram of the probe assembly of the utility model.
[0023] Figure 4 It is a structural schematic diagram of the three-axis displacement mechanism of the utility model.
[0024] In the figure: 1. three-axis displacement mechanism; 2. support platform; 3. probe assembly; 4. fine-tuning mechanism; 5. rotating platform; 6. adjustment rod; 7. test probe; 8. distance adjustment knob; 9. probe rotating knob; 10. base; 11. insulating block; 12. spring sheet; 13. rotating seat; 14. probe fastening knob; 15. fine-tuning platform; 16. fine-tuning slide rail; 17. fine-tuning slider; 18. clamping groove; 19. first horizontal displacement platform; 20. first horizontal slider; 21. first sliding rod; 22. second horizontal displacement platform; 23. second horizontal slider; 24. second sliding rod; 25. vertical displacement platform; 26. vertical slide rail; 27. vertical slider; 28. lever. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0026] according to Figures 1 to 3As shown, a probe structure for solar cell testing of the utility model includes a three-axis displacement mechanism 1. The three-axis displacement mechanism 1 is used to realize the precise movement of the probe in three directions of X, Y and Z, so as to ensure that the probe can be accurately positioned at the test point of the solar cell. A support platform 2 is installed on the three-axis displacement mechanism 1, and a probe assembly 3 is provided on the support platform 2. The probe assembly 3 consists of a plurality of test probes 7 and is used to contact different test points of the solar cell. In order to achieve precise adjustment of the probe position, a fine-tuning mechanism 4 is also provided on the support platform 2. A rotating platform 5 is provided on the fine-tuning mechanism 4. A lever 28 is provided on one side of the rotating platform 5 for adjusting the position and angle of the rotating platform 5, thereby changing the overall position of the probe assembly 3. An adjusting rod 6 is provided on the rotating platform 5, and the probe assembly 3 is arranged on the adjusting rod 6. The position of the probe can be finely adjusted by the adjusting rod 6. The probe assembly 3 includes multiple groups of test probes 7, each group includes 2 test probes 7, and there are at least 4 groups, that is, a total of 8 test probes 7, so that the probe assembly 3 can test multiple points at the same time, thereby improving the test efficiency. In order to further improve the accuracy and flexibility of the adjustment, a distance adjustment knob 8 is provided at one end of the probe assembly 3 close to the adjusting rod 6, and the distance between each group of probes can be adjusted by the knob. A probe rotating knob 9 is also provided at one end of the probe assembly 3 close to the test probe 7, which is used to further fine-tune the angle of the probe to ensure that the probe can contact the surface of the solar cell at the optimal angle.
[0027] The probe assembly 3 includes a base 10, and the adjustment rod 6 is inserted into the base 10. The base 10 is provided with an insulating block 11 to prevent electrical interference and ensure that the electrical contact between the probe and the solar cell during the test is accurate and interference-free. A spring sheet 12 is installed on the insulating block 11 so that the probe can maintain appropriate pressure during the test. A rotating seat 13 is provided on the spring sheet 12. The test probe 7 is inserted into the rotating seat 13. The rotating seat 13 and the probe rotating knob 9 are fixed on the rotating seat 13. The angle of the test probe 7 can be adjusted by rotating the knob. In addition, the rotating seat 13 is also threaded with a probe tightening knob 14 for fixing and locking the position of the probe. Once the angle and position of the probe are adjusted to the optimal state, the probe can be firmly fixed in the rotating seat 13 by rotating the probe tightening knob 14 to prevent loosening or position displacement during the test.
[0028] The fine-tuning platform 15 is provided with a fine-tuning rail 16, and the fine-tuning rail 16 is provided with a fine-tuning slider 17. The fine-tuning slider 17 can be slightly adjusted in translation on the fine-tuning platform 15, so as to accurately locate the position of the probe. The rotating platform 5 is rotatably set on the fine-tuning slider 17, and the rotating platform 5 is provided with an adjustment rod 6. The probe assembly 3 is slidably set on the adjustment rod 6, so that the spacing between each group of test probes 7 can also be adjusted. The end of the insulating block 11 is provided with a clamping groove 18, and the adjustment rod 6 is inserted into the clamping groove 18. The distance adjustment knob 8 is threadedly connected to one side of the clamping groove 18, so that the adjustment rod 6 is firmly fixed in the clamping groove 18 and will not deviate.
[0029] according to Figure 4 As shown, the three-axis displacement mechanism 1 includes a first horizontal displacement platform 19, a first horizontal slider 20 is provided on the first horizontal displacement platform 19, a first sliding rod 21 is provided on the first horizontal slider 20, the first sliding rod 21 is penetrated in the first displacement platform, a second horizontal displacement platform 22 is provided on the first slider, a second horizontal slider 23 is provided on the second horizontal displacement platform 22, a second sliding rod 24 is provided on the second horizontal slider 23, the second sliding rod 24 is penetrated in the second displacement platform, the second horizontal displacement platform 22, the second horizontal slider 23 and the second sliding rod 24 are all arranged vertically to the first horizontal displacement platform 19, a vertical displacement platform 25 is provided on the second horizontal displacement platform 22, a vertical slide rail 26 is provided on the vertical displacement platform 25, a vertical slide rail 26 is slidably provided with a vertical slider 27, the support platform 2 is arranged on the vertical slider 27, through such a structure, the probe assembly 3 can be accurately moved and positioned in the three directions of X, Y and Z.
[0030] When the utility model is used, the solar cell is installed on the work station, the probe assembly 3 is connected to the test equipment, and the three-axis displacement mechanism 1 is used to preliminarily position the probe assembly 3. Through the movement of the first horizontal slider 20, the second horizontal slider 23 and the vertical slider 27, the probe needle is accurately positioned in the three directions of X, Y and Z. The probe is further finely adjusted by using the fine-tuning slide rail 16 and the fine-tuning slider 17 on the fine-tuning platform 15. The position and angle of the probe can be slightly adjusted by the adjusting rod 6 on the rotating platform 5 to ensure that the probe is in good contact with the surface of the solar cell. The probe assembly 3 is provided with a distance adjustment knob 8 and a probe rotation knob 9, through which the distance between the probes and the angle of the probe can be adjusted respectively to achieve the best test state. The test probe 7 contacts the electrode of the solar cell, applies current and voltage, and measures the current-voltage characteristic curve of the battery; applies current to make the solar cell emit light, and captures the electroluminescent image through the imaging device. The test equipment records the IV curve and EL image data. By analyzing the IV curve, the efficiency and performance parameters of the solar cell can be evaluated; by analyzing the EL image, the defect location and properties in the battery can be identified.
[0031] The beneficial effects brought by the utility model are:
[0032] The utility model can accurately move in three directions of X, Y and Z, and fine-tune the position and angle of the probe to ensure that the probe can be accurately positioned on the test point of the solar cell, thereby improving the accuracy of the test.
[0033] The utility model can adapt to the testing requirements of solar cells of different types and sizes.
[0034] Multiple sets of probes can test multiple points at the same time, and the probe position and angle can be quickly adjusted to reduce test preparation time and improve test efficiency.
[0035] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A probe structure for solar cell testing, comprising a three-axis displacement mechanism, a support platform is provided on the three-axis displacement mechanism, and a probe assembly is provided on the support platform, characterized in that: The support platform is provided with a fine-tuning mechanism with adjustable steering, the fine-tuning mechanism is provided with a rotating platform, the rotating platform is provided with an adjusting rod, the probe assembly is provided on the adjusting rod, the probe assembly includes multiple groups of test probes, the end of the probe assembly close to the adjusting rod is provided with a distance adjustment knob, and the end of the probe assembly close to the test probe is provided with a probe rotation knob.
2. A probe structure for solar cell testing according to claim 1, characterized in that: The probe assembly includes a base, the adjustment rod is passed through the base, an insulating block is provided on the base, a spring sheet is provided on the insulating block, a rotating seat is provided on the spring sheet, the test probe is passed through the rotating seat, the probe rotating knob is fixed on the rotating seat, and a probe tightening knob is threadedly connected to the rotating seat.
3. The probe structure for solar cell testing according to claim 1, characterized in that: The fine-tuning mechanism comprises a fine-tuning platform, a fine-tuning slide rail is arranged on the fine-tuning platform, a fine-tuning slider is slidably arranged on the fine-tuning slide rail, the rotating platform is rotatably arranged on the fine-tuning slider, and the adjusting rod is arranged on the rotating platform.
4. The probe structure for solar cell testing according to claim 2, characterized in that: The end of the insulating block is provided with a clamping groove, the adjusting rod is inserted into the clamping groove, and the distance adjusting knob is threadedly connected to one side of the clamping groove.
5. The probe structure for solar cell testing according to claim 1, characterized in that: The three-axis displacement mechanism comprises a first horizontal displacement platform, on which a first horizontal sliding block is disposed, on which a first sliding rod is disposed, and the first sliding rod is inserted into the first horizontal displacement platform.
6. A probe structure for solar cell testing according to claim 5, characterized in that: A second horizontal displacement platform is disposed on the first horizontal slider, a second horizontal displacement platform is disposed on the second horizontal slider, a second sliding rod is disposed on the second horizontal slider, and the second sliding rod is penetrated in the second horizontal displacement platform.
7. A probe structure for solar cell testing according to claim 6, characterized in that: The second horizontal displacement platform, the second horizontal sliding block and the second sliding rod are all arranged perpendicularly to the first horizontal displacement platform.
8. The probe structure for solar cell testing according to claim 6, characterized in that: A vertical displacement platform is disposed on the second horizontal displacement platform, a vertical slide rail is disposed on the vertical displacement platform, a vertical slider is slidably disposed on the vertical slide rail, and the support platform is disposed on the vertical slider.
9. The probe structure for solar cell testing according to claim 1, characterized in that: A lever is arranged on the rotating platform.
10. The probe structure for solar cell testing according to claim 1, characterized in that: The test probes are provided in at least 4 groups, with 2 probes in each group.