CN102608366B - A solar cell test centering pin device - Google Patents

Abstract

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 acell 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 frameto 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

A solar cell test centering pin device

technical field

The invention relates to a centering pin device for solar battery sheet testing.

Background technique

Before leaving the factory, solar cells need to pass an efficiency test to determine the grade of the cells. Since the material of the solar cells is 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

The object of the present invention is to provide a centering and pinning device for testing solar cells, which makes the cells evenly stressed during testing and is not easily damaged.

In order to achieve the above object, the technical solution adopted by the present invention is: a centering pin device for testing solar cells, which includes a fixed seat fixedly connected to the workbench, and the centering pin device also includes a vertical pin that can move up and down in the vertical direction The upper needle frame and the lower needle frame arranged on the fixed seat in a lifting manner, the upper needle frame and the lower needle frame are respectively provided with a plurality of upper probes and a plurality of lower probes, and the plurality of upper needle frames The axis lines of the probe and the plurality of lower probes respectively extend in the vertical direction, and at least one set of connecting rods for connecting the upper needle frame and the lower needle frame is provided on the fixed base The connecting rod set includes a first connecting rod which is rotatably connected to the fixed seat, and one end is respectively rotatably connected to a second connecting rod and a third connecting rod which are arranged at both ends of the first connecting rod. Rod, the other ends of the second connecting rod and the third connecting rod are respectively arranged to be rotatably connected with the upper needle frame and the lower needle frame, and the centering device also includes a mechanism capable of driving the lower needle frame The lifting drive mechanism for lifting and lowering the needle frame in the vertical direction.

Preferably, the fixing seat has at least one guide rail distributed along the vertical direction, and the upper needle frame and the lower needle frame are arranged on the guide rail so as to be slidable along the vertical direction.

Preferably, the lifting drive mechanism includes a drive block fixedly connected to the lower needle frame, and a motor capable of driving the drive block to lift vertically.

Preferably, the first connecting rod is rotatably connected to the fixed base through a first rotating shaft, and the second connecting rod and the third connecting rod are rotatably connected to each other through a second rotating shaft and a third rotating shaft. On both ends of the first connecting rod, the other ends of the second connecting rod and the third connecting rod are rotatably connected to the upper needle holder, On the lower needle holder, the axis lines of the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft all extend along the front and rear horizontal directions.

As a specific implementation manner, there is one set of connecting rod sets.

Preferably, the numbers of the upper probes and the lower probes are the same, and each of the upper probes is correspondingly provided with one lower probe in the same vertical direction.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art: the upper needle frame and the lower needle frame are connected by setting a connecting rod group on the fixed seat, and the lower needle frame is driven by setting a lifting drive mechanism. The frame is lifted vertically on the fixed seat. When the centering pin device is testing the battery sheet to be tested, the lifting drive mechanism drives the lower needle frame to move upward on the fixed seat in the vertical direction. At the same time, the connecting rod group can drive the upper The needle frame goes down vertically on the fixed seat, so that the lower probe on the lower needle frame touches the lower surface of the cell to be tested while the upper probe on the upper needle frame also touches the upper surface of the cell to be tested. surface, which makes the upper probe and the lower probe touch the cell to be tested to test the battery evenly. In the centering pin device, only the operation of the upper probe or the lower probe needs to be controlled separately to control the operation of the upper and lower probes at the same time. The control method is simple and easy, and at the same time, it prevents the battery from being damaged due to uneven force. , the device has a simple structure and good practicability.

Description of drawings

Accompanying drawing 1 is the overall structure schematic diagram of the centering needle closing device of the present invention.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, a solar cell test centering needle device includes a fixed seat 1 fixedly connected to the workbench, and the fixed seat 1 is provided with an upper needle frame 2 and a lower needle frame that can be lifted up and down in the vertical direction. The 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 are all along the vertical Extend straight. 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 rotatably connected with the second connecting rod 62 and the third connecting rod 63, and the other ends of the second connecting rod 62 and the third connecting rod 63 are respectively connected with the upper needle holder 2, The 3-phase rotation connection setting of the lower needle frame. The centering needle closing device also includes a lift drive mechanism capable of driving the lower needle frame 3 to lift up and down in the vertical direction. When the lifting drive mechanism drives the lower needle frame 3 to rise vertically, the third connecting rod 63 rises along with the rising of the lower needle frame 3 so as to drive the end of the first connecting rod 61 connected to the third connecting rod 63 to rise , when the first connecting rod 61 rotates around its rotational connection point with the fixed base 1, the end connected to the second connecting rod 62 will inevitably descend, and the descending of the second connecting rod 62 will drive the upper needle holder 2 along the vertical direction. Downward, the cells to be tested are generally sent between the upper needle frame 2 and the lower needle frame 3 by the transmission mechanism, the connecting rod group 6, the upper probe 4 and the lower probe 5 should be set so that the upper needle frame 2 and the lower needle frame When the frame 3 moves to the middle at the same time, the upper probe 4 touches the upper surface of the cell to be tested, and the lower probe 5 also touches the lower surface of the cell to be tested, so that the upper probe 4 and the lower probe 5 When touching the battery piece to be tested, the battery piece is evenly stressed, so as to prevent the battery piece from being damaged due to uneven force. Similarly, when the lifting drive mechanism drives the lower needle holder 3 to descend in the vertical direction, the third connecting rod 63 descends to drive the end of the first connecting rod 61 connected to the third connecting rod 63 to descend, and the first connecting rod 61 goes around it. When the rotation connection point with the fixed base 1 rotates, the end connected with the second connecting rod 62 must rise, and the second connecting rod 62 rises thereupon to push the upper needle holder 2 to rise vertically on the fixed base 1 .

Referring to Fig. 1, in this embodiment, the left and right ends of the fixing base 1 are respectively provided with guide rails 7 extending in the vertical direction, and the upper needle frame 2 and the lower needle frame 3 are respectively arranged on the vertically slidable on rail 7. In this embodiment, there is one set of connecting rod groups 6, wherein the first connecting rod 61 is rotatably connected and arranged on the fixed base 1 through the first rotating shaft, and one end of the second connecting rod 62 and the third connecting rod 63 are respectively passed through the first rotating shaft. The two rotating shafts and the third rotating shaft are rotatably connected to the two ends of the first connecting rod 61, and the other ends of the second connecting rod 62 and the third connecting rod 63 pass through the fourth rotating shaft, the fifth rotating shaft and the upper needle holder respectively. 2. The 3-phase rotation connection of the lower needle holder is arranged. The axes of the above-mentioned first, second, third, fourth, and fifth shafts are all distributed along the front and rear horizontal directions. The front and rear horizontal directions here refer to It is the front and back direction of the viewer's line of sight when facing the fixed seat 1 when observing Fig. 1 , so the setting structure is simple and compact, and the installation and adjustment are convenient. The lifting drive mechanism includes a drive block 8 fixedly connected to the lower needle frame 3, and a motor (not shown) that can drive the drive block 8 to move up and down in the vertical direction. Thus, the upper needle frame 2 and the lower needle frame 3 are lifted and lowered in the vertical direction on the fixed frame to complete the detection of the cell to be detected.

In this embodiment, the numbers of the upper probes 4 and the lower probes 5 are the same, and the upper probes 4 and the lower probes 5 are arranged in one-to-one correspondence on the upper needle frame 2 and the lower needle frame 3 respectively, each On the same vertical direction of the upper probes 4, a lower probe 5 is correspondingly arranged, so that when the upper needle frame 2 and the lower needle frame 3 move to the middle respectively, the upper probes 4 and the lower probes 5 contact simultaneously. to the battery, and the forces acting on the upper and lower surfaces of the battery can cancel each other out, reducing the stress on the battery to be tested, and further reducing the uneven stress on the battery to be tested, reducing the test time of the battery to be tested. chance of breakage.

To sum up, a solar cell testing centering needle assembly device of the present invention connects the upper needle frame 2 and the lower needle frame 3 by setting the connecting rod group 6 , when the lifting drive mechanism drives the lower needle frame 3 to be positioned on the fixed seat 1 When going up in the vertical direction, the connecting rod group 6 can drive the upper needle frame 2 to go down in the vertical direction on the fixed seat 1, so that the lower probe 5 on the lower needle frame 3 touches the lower surface of the cell to be tested At the same time, the upper probe 4 on the upper needle holder 2 also touches the upper surface of the cell to be tested, which makes the upper probe 4 and the lower probe 5 touch the cell to be tested. Even force. In the centering needle device, only the operation of the upper probe 4 or the lower probe 5 needs to be controlled separately to control the operation of the upper and lower probes at the same time. damage, the device has a simple structure and good practicability.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (4)

1. a solar cell built-in testing closes needle device between two parties, comprise and be fixedly connected with the holder that is arranged on the worktable, it is characterized in that: the described needle device that closes between two parties is arranged on upper punch block and lower punch block on the described holder with also comprising vertically oscilaltion, described upper punch block, be respectively arranged with a plurality of upper probes and a plurality of lower probe on the described lower punch block, described a plurality of upper probe, the axial line of described a plurality of lower probes vertically extends respectively, has the guide rail that at least one vertically distributes on the described holder, described upper punch block, described lower punch block can vertically be slidingly arranged on the described guide rail, also be provided with at least one group of connecting link group that is used for connecting described upper punch block and described lower punch block on the described holder, described connecting link group comprises can connect the first connecting rod that is arranged on the described holder rotationally, one end connects respectively second connecting rod and the third connecting rod that is arranged on described first connecting rod both ends rotationally, described second connecting rod, the other end of described third connecting rod respectively with described upper punch block, described lower punch block rotates to connect and arranges, described first connecting rod connects rotationally by the first rotating shaft and is arranged on the described holder, described second connecting rod, described third connecting rod is respectively by the second rotating shaft, the 3rd rotating shaft connects on the both ends that are arranged on described first connecting rod rotationally, described second connecting rod, the other end of described third connecting rod is respectively by the 4th rotating shaft, the 5th rotating shaft connects rotationally and is arranged on described upper punch block, on the described lower punch block, described the first rotating shaft, described the second rotating shaft, described the 3rd rotating shaft, described the 4th rotating shaft, the axial line of described the 5th rotating shaft all extends along the front and back horizontal direction, and the described needle device that closes between two parties also comprises the lift drive mechanism that can drive the vertically lifting of described lower punch block.

2. a kind of solar cell built-in testing according to claim 1 closes needle device between two parties, it is characterized in that: described lift drive mechanism comprises and is fixedly connected with the drive block that is arranged on the described lower punch block, the motor that can drive the vertically lifting of described drive block.

3. a kind of solar cell built-in testing according to claim 1 closes needle device between two parties, it is characterized in that: described connecting link group has one group.

4. a kind of solar cell built-in testing according to claim 1 closes needle device between two parties, it is characterized in that: the number of described upper probe, described lower probe is consistent, all is provided with accordingly a described lower probe on the same vertical direction of each described upper probe.

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