Centering needle-closing device used in solar cell test
A technology of solar cells and middle needles, which is applied to measuring devices, parts of electrical measuring instruments, measuring electricity, etc. The method is simple and easy to implement, has good practicability, and has the effect of preventing uneven force
Active Publication Date: 2013-10-23
SUZHOU MAXWELL TECH CO LTD
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Problems solved by technology
Since the solar cell is made of high-purity silicon with a thickness of about 0.2mm, its material is very brittle and prone to damage
During the test, it is necessary to use probes to touch the positive and negative electrodes of the battery, that is, the silver grid lines on the front and back of the battery. If the contact force of the probe is too large during the test, or the force on the battery is uneven, it may cause Damage to the cell
The test device in the prior art adopts the method of independent control of the upper and lower probes, which needs to control the movement of the upper and lower probes at the same time, and the control steps are relatively complicated
Method used
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[0012] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0013] see figure 1 As shown, a solar cell test centering pin device, including a fixed seat 1 fixedly connected to the workbench, the fixed seat 1 can be vertically arranged with an upper needle frame 2 and a lower needle frame 3 , the upper needle frame 2 and the lower needle frame 3 are respectively provided with a plurality of upper probes 4 and a plurality of lower probes 5, and the axes of the plurality of upper probes 4 and lower probes 5 extend along the vertical direction . The fixed base 1 is also provided with at least one set of connecting rods 6 for connecting the upper needle holder 2 and the lower needle holder 3, and the connecting rods 6 include a first connecting rod 61 which is rotatably connected and arranged on the fixed base 1 , the two ends of the first connecting rod 61 are respectively ...
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The invention discloses a centering needle-closing device used in a solar cell test. An upper needle frame and a lower needle frame are connected together through a connecting rod group arranged on a fixed seat, and the lower needle frame is driven to lift up and down on the fixed seat along a vertical direction through a lifting driving mechanism. When the centering needle-closing device tests a cell to be detected, the lifting driving mechanism drives the lower needle frame to move up on the fixed seat along the vertical direction while the connecting rod group drives the upper needle frame to move down on the fixed seat along the vertical direction, therefore a lower probe on the lower needle frame contacts the lower surface of the cell to be detected while an upper probe on the upper needle frame also contacts the upper surface of the cell to be detected, further, the upper probe and the lower probe contact the cell to be detected, and the stress of the cell is uniform during detecting the cell. Therefore, the damage to cell, due to non-uniform stress, is prevented.
Description
technical field [0001] The invention relates to a centering pin device for solar battery sheet testing. Background technique [0002] Before leaving the factory, solar cells need to undergo an efficiency test to determine the grade of the cells. Since the solar cells are made of high-purity silicon with a thickness of about 0.2 mm, the material is very brittle and prone to damage. During the test, it is necessary to use probes to touch the positive and negative poles of the battery, that is, the silver grid lines on the front and back of the battery. If the contact force of the probe is too large during the test, or the force on the battery is uneven, it may cause Damage to the battery sheet. The test device in the prior art adopts the method of controlling the upper and lower probes separately, which needs to control the movement of the upper and lower probes at the same time, and the control steps are relatively complicated. Contents of the invention [0003] The obj...
Claims
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IPC IPC(8): G01R1/073
Inventor 施政辉连建军
Owner SUZHOU MAXWELL TECH CO LTD