PV Cell Tension Test Solutions
PV Cell Tension Test Solutions
Writer: SHD-TECH Date: 2023-04-12 17:18:52 Read: 1459
PV Cell Tension Test Solutions
Standard Operating Procedure
Machine Operation
1. Power on machine and connect network between computer and machine.
2. Check the safe distance between mobile platform and pull rods, about 1cm.
(machine has been well adjusted before delivery.)
3. Turn on the power switch of machine and open test software.
When network successfully connected, "Connected" will display on the top title bar of software interface.
4. Press "LEFT" or "RIGHT" button to move platform to appropriate position, loosen the retaining nut of pressing bar with the hex wrench, and select required pressing bars, and push the rest unused pressing bars aside.
5. Lift pressing bars, place the cell to be tested, and then lower pressing bars.
Adjust the space to ensure the solder strip is in the middle of the adjacent pressing bars, and there is no interference in the subsequent peeling process. After adjusting pressing bar, tighten retaining nut and well sort solder strips to be tested. (The end of the pressing bar is connected by magnet adsorption, please pay attention to handling gently during lifting and lowering).
[Attention] After the adjustment, please be sure to carefully check the status of each pressing bar, there is no pressing bar stacked or not lowered to prevent hitting the pull rod and causing damage to sensors during the test.
6. Press "LEFT" or "RIGHT" button to move platform, and move the peeling start point of the solder strip close to the end of pull rod.
Loosen the retaining nut of pull rod with hex wrench, align the pull road with solder strip to be tested, then lock nut.
To ensure accuracy and efficiency of alignment adjustment, it is recommended that two operators work together.
After completing alignment, fix solder strip to the clamp at the end of the pull rod with both.
[Attention] In the process of fixing solder strip, it is necessary to ensure the appropriate tightness of solder strip to be tested, which cannot be stretched to produce pre-tension, nor curl up excess solder strip.
It is necessary to ensure the tightness of all solder strips to be tested is similar for accurate test results purpose.
Software Operation
1. Software interface language option: "Menu" -> "View"-> "Language".
2. On the main interface of test software, there is a green button in the lower left corner of the transverse tension curve.
Select the test tension by clicking or closing button according to test requirement.
3. "Edit Standard" - "Specimen"
a) Click to "Add" test program on the left side of the interface, input name and save.
b) Set the specific parameters of test samples on the right side.
Set corresponding number of test items according to solder strips to be tested.
[Attention] The width and thickness of samples must be set and do not leave blank.
After completing a row, the rest items can be set by using copy button.
c) Deformation Interval Setting: according to the number of soldering spots of different cell type,
set the corresponding deformation interval number, in order to capture the target value in the set interval range.
To find appropriate interval values, it’s necessary to test multiple sets of samples of the same type until all target values are displayed in the setting deformation interval.
[Attention] The starting point of the first interval cannot be set as "0",
the end point and starting point of the adjacent interval can be set to be same, or leave a little interval.
d) Above steps should be repeated when changing difference types of test sample.
e) Retain the default values of other parameters on this interface.
4. "Edit Standard" - "Test Method" - "Test Method"
a) The shift condition value is to set the distance that platform moves from the beginning to the end of the test. Generally, keep the default value. Can also make reasonable adjustment according to different types of specimen, but it is necessary to ensure that all the soldering spots are peeled off within the range of setting distance.
b) Retain the default values of other parameters on this interface.
5. "Edit Standard" - "Test Method" - "Control Parameters"
a) Recommend not to select “Auto zero stroke before test” so that there is sufficient space to replace new test samples.
b) Recommend not to select "Auto zero force before test" so that it is convenient to observe whether there is excessive stretching when clamping solder strips. It’s fine to set zero clearing manually after confirming there’s no other problem.
c) Retain the default values of other parameters on this interface.
6. "Edit Standard" - "Test Result" - "Test Result"
a) In the "Title info." list, select "Results @ Interval". Select "MaxForce" of each interval one by one at the right column.
Click "Insert" to add chosen forces into above table one by one according to the number of solder strip.
b) Retain the default values of other parameters on this interface.
7. "Edit Standard" - "Test Result" - "Label"
a) In the directory list, select the intervals to be displayed on the curve.
b) Retain the default values of other parameters on this interface.
8. "Edit Standard" - "Test Result" - "Label"
a) In "Graph print" list, select target graph type.
b) Recommend to select “Show save dialog when output report” so that you can select an appropriate save path for following quick and easy search.
c) Retain the default values of other parameters on this interface.
[Attention] When the test is finished, choose to output the report.
By default, the report popped up by the software is its own template document, which cannot be changed at will, simply click to close the document.
If have made changes, choose not to save when exiting the document.
Search the target test report according to the save path, then modify if needed.
9. Click “Start Test” on the software interface. After the test is complete, select the format of the report to be generated from the toolbar and save the report to target path.
