CN219611725U - Solar cell testing device and unit - Google Patents

Abstract

The present application relates to a solar battery testing device and unit, and the solar battery testing unit includes a support and a probe row. The support includes a mounting part and a supporting part, and the supporting part is connected to one side of the bottom surface of the mounting part. Since the support part is connected to one side of the bottom surface of the installation part, there is a space below the bottom surface of the installation part to place the connection part. After the connection part and the support part are connected and fixed by the first fastener, the overall width dimension is compared to In the related art, the width dimension of the middle position where the support part is connected to the bottom surface of the installation part is smaller, so that more solar battery test units can be placed in a limited space, thereby increasing the number of probe rows to the same size as The number of busbars of the SMBB cell is the same, so that the electrical performance test operation of the MBB cell and the SMBB cell can be satisfied respectively, and the accurate electrical performance test can be realized, and the online internal defect detection can be clearly identified.

Description

Solar cell test equipment and unit

technical field

The present application relates to the technical field of solar cell testing, in particular to a solar cell testing device and unit.

Background technique

With the innovation of silver paste technology and the improvement of printing technology, multi-busbar technology (referred to as MBB) has gradually become the mainstream of the market, and super multi-busbar technology (referred to as SMBB) has begun to appear. Metal electrodes of solar cells mainly include a main grid and a fine grid, the main grid is used for confluence and series connection, and the fine grid is used to collect photogenerated carriers. As the size of mainstream cells increases, for example, cells of heterojunction cells (referred to as HJT) develop from MBB cells including 12 busbars to SMBB cells including 18 busbars.

Among them, when the battery is being tested for electrical performance (including current and voltage), the manipulator transports the battery to the suction nozzle of the turntable in the black room, and then the turntable rotates to put the battery into the probe row, and the probe row is pressed together. The busbar and the solar simulator use xenon lamps to simulate sunlight to test the electrical properties of the cells. After the test is completed, the probes are released, the turntable rotates, and the manipulator transports the cells out of the black room and puts them on the conveyor belt. According to the different electrical properties tested, they enter different sorting boxes.

However, due to the large number of busbars of the multi-busbar cell, if the number of probe rows is small during the electrical performance test, the electrical performance of the battery cell tested during the electrical performance test operation will deviate from the actual electrical performance. . For example, the 12-probe row test device currently used in the production line is mainly used to perform related electrical performance test operations on the cells of MBB batteries (also referred to as MBB cells). When used for the electrical performance test of SMBB battery cells (also referred to as SMBB cells), the online internal defect detection (EL for short) is not clear enough, the test efficiency (Eta for short) deviation is ±0.2%, and the electrical performance test results Not accurate enough.

Contents of the invention

Based on this, it is necessary to overcome the defects of the prior art, and provide a solar cell testing device and unit, which can accurately test the electrical properties of multi-busbar cells and super multi-busbar cells, and clearly detect internal defects online. Recognizable.

A solar cell test unit, the solar cell test unit comprising:

a support, the support includes a mounting part and a supporting part, and the supporting part is connected to one side of the bottom surface of the mounting part; and

A probe row, the end of the probe row is provided with a connecting part, the connecting part is located below the bottom surface of the mounting part, the connecting part and the supporting part abut against each other and are connected by a first fastener fixed.

In one of the embodiments, the support part is provided with a first surface on the same plane as one of the side surfaces of the installation part and a second surface opposite to the first surface, and the second surface is opposite to the first surface. The connecting parts abut against each other.

In one of the embodiments, the connecting part is provided with a first installation hole corresponding to the first fastener, and the support part is provided with a second installation hole corresponding to the first fastener, so The first fastener is sequentially passed through the first installation hole and the second installation hole.

In one embodiment, the first fastener is a screw, the first mounting hole is set as a counterbore, the head of the screw is embedded in the counterbore, and the second mounting hole is The screw fits into the threaded hole.

In one embodiment, the width of the supporting part is defined as W1, the width of the mounting part is defined as W2, the width of the connecting part is defined as W3, the depth of the counterbore is defined as S, and the screw The thickness of the part of the head exposed outside the first mounting hole is defined as d, and the overall width after the combination of the connecting part and the supporting part is defined as W4; wherein, W1 is 4.8mm-5.2mm, and W2 is 9.8mm-10.2mm, W3 is 4.4mm-4.6mm, S is 2.9mm-3.1mm, d is 0.8mm-1.2mm, W4 is 10mm-11mm.

In one embodiment, there are two supports, the connecting parts are respectively provided at opposite ends of the probe row, and the two connecting parts are arranged correspondingly to the two supports.

A solar cell testing device, the solar cell testing device includes a workbench, and a plurality of solar cell test units sequentially arranged on the workbench at intervals.

In one of the embodiments, the plurality of solar cell test units include a plurality of first solar cell test units, and the solar cell test device further includes a first fixing slot provided on the workbench, and the plurality of solar cell test units The first solar battery test unit is arranged at intervals along the first fixed slot, and the installation part of the first solar battery test unit can move along the first fixed slot to adjust the position, and pass the second fastener fastened to the first fixing slot.

In one of the embodiments, the plurality of solar cell test units include a plurality of second solar cell test units, and the first solar cell test units are arranged alternately with the second solar cell test units; the solar cell test The device also includes a plurality of second fixing slots arranged on the workbench, the second fixing slots are correspondingly arranged between two adjacent first solar cell test units, and the second solar cell The mounting part of the test unit is fastened on the second fixing slot by a third fastener; the length of the second solar cell test unit is defined as L1, and the length of the probe row of the first solar cell test unit is The length is defined as L2, L1<L2.

In one of the embodiments, the second fixing slot is detachably connected to the workbench; and/or, a plurality of the solar cell testing units are arranged at equal intervals.

The above-mentioned solar battery testing device and unit, since the support part is connected to one side of the bottom surface of the installation part, there is a space under the bottom surface of the installation part to place the connection part, and the connection part and the support part are connected and fixed by the first fastener , the overall width dimension is smaller than the width dimension of the middle position where the supporting part is connected to the bottom surface of the mounting part in the related art, so that more solar battery test units can be placed in a limited space, so that the The number of probe rows is increased to be consistent with the number of busbars of SMBB cells, so that the electrical performance test operations of MBB cells and SMBB cells can be satisfied respectively, and accurate electrical performance testing can be achieved. Online internal defect detection is clearly identifiable .

Description of drawings

FIG. 1 is a perspective structure diagram of a support according to an embodiment of the present application.

FIG. 2 is another view of the structure shown in FIG. 1 .

FIG. 3 is a structural view of a probe row according to an embodiment of the present application.

FIG. 4 is a perspective structure diagram of a connecting portion of a probe row according to an embodiment of the present application.

FIG. 5 is a structural view of a probe row installed on a support according to an embodiment of the present application.

FIG. 6 is a structural view of a first solar cell testing unit installed on a first fixing slot according to an embodiment of the present application.

FIG. 7 is a top structural view of a solar cell testing device according to an embodiment of the present application.

10. Solar battery test unit; 11. Support; 111. Installation part; 1111. Third installation hole; 112. Support part; 1121. Second installation hole; 12. Probe row; 121. Connection part; 1211. 1 installation hole; 13, the first fastener; 14, the first solar battery test unit; 15, the second solar battery test unit; 20, the first fixing slot; 21, the top panel; 211, the strip opening; 30 . The second fixing slot; 40. The second fastener.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

As described in the background technology, during the electrical performance test operation of the battery sheet used for SMBB batteries in the prior art, there is not enough clarity in the online internal defect detection (abbreviated as EL), and the deviation of the test efficiency (abbreviated as Eta) is ±0.2%. The problem of inaccurate performance test results, after research by the applicant, found that the reason for this problem is that the number of probe rows of the test device with 12 probe rows currently used in the production line is less than the number required by SMBB batteries (18 probe rows Pin rows), and for SMBB batteries with a busbar pitch of, for example, 11.29mm, the width of the installed probe row is, for example, 17.6mm, so that the space is not enough to add 6 probe rows to make the number reach 18.

Based on the above reasons, the present application provides a solar cell testing device and unit, which can accurately test the electrical properties of multi-busbar cells and super multi-busbar cells, and provide a clear and identifiable solution for online internal defect detection.

Referring to FIG. 1 to FIG. 5 , FIG. 1 shows a structural view of a support 11 according to an embodiment of the present application. FIG. 2 shows another view of the structure shown in FIG. 1 . FIG. 3 shows a structural view of a probe row 12 according to an embodiment of the present application. FIG. 4 shows a structural view of the connecting portion 121 of the probe row 12 according to an embodiment of the present application. FIG. 5 shows a structural view of the probe row 12 installed on the support 11 according to an embodiment of the present application. An embodiment of the present application provides a solar cell test unit 10 , the solar cell test unit 10 includes a support 11 and a probe row 12 . The stand 11 includes a mounting portion 111 and a supporting portion 112 . The supporting portion 112 is connected to one side of the bottom surface of the mounting portion 111 . The end of the probe row 12 is provided with a connecting portion 121 . The connecting portion 121 is located below the bottom surface of the mounting portion 111 , and the connecting portion 121 and the supporting portion 112 abut against each other and are connected and fixed by the first fastener 13 .

In the above-mentioned solar battery test unit 10, since the support part 112 is connected to one side of the bottom surface of the installation part 111, there is a space below the bottom surface of the installation part 111 to place the connection part 121, and the connection part 121 and the support part 112 pass through the first After the fastener 13 is connected and fixed, the overall width dimension is smaller than the width dimension of the middle position where the supporting part 112 is connected to the bottom surface of the mounting part 111 in the related art, so that more can be placed in a limited space. solar cell test unit 10, so that the number of probe rows 12 can be increased to be consistent with the number of busbars of the SMBB cell, so that the electrical performance test operations of the MBB cell and the SMBB cell can be satisfied respectively, and accurate Electrical performance test, online internal defect detection is clearly identifiable.

Referring to FIG. 5 , in one embodiment, the supporting portion 112 has a first surface on the same plane as one of the side surfaces of the mounting portion 111 and a second surface opposite to the first surface. The second surface and the connecting portion 121 are in contact with each other. In this way, a large enough space can be vacated for the connecting portion 121 under the bottom surface of the mounting portion 111 , so that the overall width of the connecting portion 121 and the supporting portion 112 is sufficiently small after being connected and combined.

Optionally, each of the mounting part 111, the supporting part 112 and the connecting part 121 is set in various regular and irregular shapes such as a plate shape, a block shape, etc., which can be flexibly adjusted and set according to actual needs, and will not be described here. To limit.

In this embodiment, in order to achieve installation stability and sufficient structural strength, each of the installation part 111 , the support part 112 and the connection part 121 is arranged in a block shape, for example.

Please refer to FIGS. 1 to 5 , in one embodiment, the connecting portion 121 is provided with a first mounting hole 1211 corresponding to the first fastener 13 , and the supporting portion 112 is provided with a second mounting hole 1211 corresponding to the first fastener 13 . In the installation hole 1121 , the first fastener 13 passes through the first installation hole 1211 and the second installation hole 1121 sequentially. In this way, the first fastener 13 connects and fixes the connecting portion 121 and the supporting portion 112 by passing through the first mounting hole 1211 and the second mounting hole 1121 .

Optionally, in order to improve the connection stability, there are more than one first fastener 13, for example, two, three or other numbers. The numbers of the first mounting holes 1211 and the second mounting holes 1121 are set corresponding to the first fasteners 13 .

It should be noted that the first fastener 13 includes but is not limited to screws, bolts, screw rods, screws, pins, rivets, clips, etc., which can be flexibly selected according to actual needs.

3 to 5, in one embodiment, the first fastener 13 is a screw, the first mounting hole 1211 is set as a counterbore, the head of the screw is embedded in the counterbore, and the second mounting hole 1121 is a counterbore. Screws fit into the threaded holes. In this way, since the head of the screw is embedded in the counterbore, the exposed part of the head of the screw outside the first installation hole 1211 is smaller in size, that is, it takes up less space, or the head of the screw is completely hidden in the first installation hole 1211 In this way, the overall width dimension is smaller, and a larger number of solar battery test units 10 can be installed.

Please refer to FIG. 2, FIG. 4 and FIG. 5. In one embodiment, the width of the support portion 112 is defined as W1, the width of the mounting portion 111 is defined as W2, the width of the connecting portion 121 is defined as W3, and the depth of the counterbore is defined as S, the thickness of the part where the head of the screw is exposed outside the first mounting hole 1211 is defined as d, and the overall width after the combination of the connecting part 121 and the supporting part 112 is defined as W4; wherein, W1 is 4.8mm-5.2mm, and W2 is 9.8mm-10.2mm, W3 is 4.4mm-4.6mm, S is 2.9mm-3.1mm, d is 0.8mm-1.2mm, W4 is 10mm-11mm.

In a specific embodiment, W1 is 5mm, W2 is 10mm, W3 is 4.6mm, S is 3mm, d is 1mm, and W4 is 10.6mm accordingly. It can be seen that, 10.6mm is smaller than the busbar spacing of the SMMB cell, which is 11.29mm, and each probe row 12 can be set in one-to-one correspondence with each busbar of the SMMB cell.

Wherein, the shape of the counterbore is set corresponding to the head of the screw, for example.

Optionally, the probe row 12 and the connection part 121 are an integrated structure, such as integrally formed, and made of PVB material, and the thickness is the same as the width W3 of the connection part 121 , for example, 4.6 mm. Wherein, due to the limitation of the PVB material, although the connecting portion 121 can be drilled to form the first mounting hole 1211, the thread cannot be left, and the thread of the second mounting hole 1121 can only be matched with the end of the screw during installation. , to realize that the connecting portion 121 is fixed on the supporting portion 112 of the support 11 .

Please refer to FIG. 1 , FIG. 5 and FIG. 7 . FIG. 7 shows a top structural view of a solar cell testing device according to an embodiment of the present application. In one embodiment, there are two supports 11 , connecting portions 121 are respectively provided at opposite ends of the probe row 12 , and the two connecting portions 121 are provided correspondingly to the two supports 11 . In this way, the probe row 12 is fixedly connected to the workbench through the two supports 11 connected at its two ends, so that it can be stably installed on the workbench.

As some optional solutions, one end of the probe row 12 is provided with a connecting portion 121 , and one support 11 is provided correspondingly, and the probe row 12 is fixedly connected to the workbench through one support 11 .

Please refer to Fig. 1, Fig. 5 and Fig. 7, in one embodiment, a kind of solar cell testing device, solar cell testing device comprises workbench (not shown in the figure), and a plurality of The solar cell testing unit 10 of any of the above-mentioned embodiments.

In the above-mentioned solar battery testing device, since the support part 112 is connected to one side of the bottom surface of the installation part 111, there is a space below the bottom surface of the installation part 111 to place the connection part 121, and the connection part 121 and the support part 112 pass through the first tight After the fastener 13 is connected and fixed, the overall width dimension is smaller than that of the middle position where the supporting part 112 is connected to the bottom surface of the mounting part 111 in the related art, so that more Solar cell test unit 10, thereby can increase the quantity of probe row 12 to be consistent with the busbar quantity of SMBB battery sheet, so that can satisfy the electric performance test operation of MBB battery sheet and SMBB battery sheet respectively, realize accurate electrical Performance testing, online internal defect detection is clearly identifiable.

Please refer to Fig. 6 and Fig. 7, in one embodiment, a plurality of solar cell test units 10 include a plurality of first solar cell test units 14, and the solar cell test device also includes a first fixed slot 20 arranged on the workbench , a plurality of first solar battery test units 14 are sequentially arranged at intervals along the first fixing slot 20, and the installation part 111 of the first solar battery testing unit 14 can move and adjust the position along the first fixing slot 20, and through the second fastening The component 40 is fastened on the first fixing slot 20 . In this way, loosen the second fastener 40, move and adjust the position of the installation part 111 on the first fixing slot 20, and then fasten the installation part 111 on the first fixing slot 20 through the second fastener 40 , so that the distance between two adjacent first solar cell test units 14 can be flexibly adjusted according to the position of the main grid of the battery sheet, so that it is suitable for the test operation of the battery sheet with different bus grid arrangements, and the adjustment operation is more convenient and efficient. higher.

Referring to FIGS. 1 and 6 , in a specific embodiment, the second fastener 40 includes bolts and nuts. The mounting portion 111 of the first solar cell testing unit 14 is provided with a third mounting hole 1111 . The first fixing slot 20 is provided with a top panel 21, and the top panel 21 is provided with a bar-shaped opening 211. The bolt passes through the third mounting hole 1111 and the bar-shaped opening 211 and extends into the inside of the first fixing slot 20 to be connected with the nut. After the nuts are tightened, the second fastener 40 fastens the mounting portion 111 of the first solar battery testing unit 14 to the first fixing slot 20 . In addition, the first fixing slot 20 is also provided with a bottom panel opposite to the top panel 21 , and the bottom panel includes but is not limited to being fixed on the workbench.

Referring to FIG. 7 , in one embodiment, the plurality of solar cell testing units 10 includes a plurality of second solar cell testing units 15 . The first solar cell testing units 14 and the second solar cell testing units 15 are arranged alternately. The solar cell testing device also includes a plurality of second fixing slots 30 arranged on the workbench. The second fixing slot 30 is correspondingly disposed between two adjacent first solar cell testing units 14 . The mounting portion 111 of the second solar battery testing unit 15 is fastened to the second fixing slot 30 through a third fastener. The length of the second solar cell testing unit 15 is defined as L1, the length of the probe row 12 of the first solar cell testing unit 14 is defined as L2, and L1<L2. In this way, the second solar cell testing unit 15 is arranged in the area between the probe rows 12 of two adjacent first solar cell testing units 14, avoiding the gap between the first fixing slot 20 and the first solar cell testing unit 14 accordingly. The support 11 maximizes the use of the limited space and distributes the probe rows 12 in a staggered manner to meet the requirements of more busbar tests.

It should be noted that the quantitative relationship between the first solar cell test unit 14 and the second solar cell test unit 15 can be flexibly adjusted and set according to actual needs, including but not limited to 1:1, 2:1, 3:1, 4 :1, 5:1, 1:2, 1:3 and so on.

Specifically, when the quantitative relationship between the first solar cell testing units 14 and the second solar cell testing units 15 is set to 1:1, the first solar cell testing units 14 and the second solar cell testing units 15 are arranged alternately in sequence. When the quantity relationship between the first solar cell testing unit 14 and the second solar cell testing unit 15 is set to 2:1, when two first solar cell testing units 14 are provided, one second solar cell testing unit 15 is correspondingly provided.

In one embodiment, the second fixing slot 30 is detachably connected to the workbench.

In one embodiment, a plurality of solar cell testing units 10 are arranged at equal intervals.

It should be noted that the "support part 112" can be "a part of the installation part 111", that is, the "support part 112" is integrally formed with "other parts of the installation part 111"; An independent component that can be separated, that is, the "support part 112" can be manufactured independently, and then combined with the "other parts of the installation part 111" into a whole.

It should be noted that the "connecting part 121" can be "a part of the probe row 12", that is, the "connecting part 121" is integrally formed with "other parts of the probe row 12"; An independent component that can be separated from the other parts of the probe row 12, that is, the "connecting part 121" can be manufactured independently, and then combined with the "other parts of the probe row 12" to form a whole.

In the description of the present application, it should be understood that if any of these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", " Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.

In addition, if these terms "first" and "second" appear, these terms are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, if any terms such as "mounted", "connected", "connected" and "fixed" appear, these terms should be interpreted in a broad sense. For example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be the internal communication of two components Or the interaction relationship between two elements, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In this application, unless otherwise clearly specified and limited, if there is a similar description that the first feature is "on" or "under" the second feature, the meaning may be that the first and second features are in direct contact, or The first and second features are in indirect contact through an intermediary. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that, if an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions are used for purposes of illustration only and are not intended to be exclusive implementation.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (10)

1. A solar cell test unit (10), characterized in that, the solar cell test unit (10) comprises: A support (11), the support (11) includes a mounting part (111) and a supporting part (112), and the supporting part (112) is connected to one side of the bottom surface of the mounting part (111); and A probe row (12), the end of the probe row (12) is provided with a connecting portion (121), the connecting portion (121) is located below the bottom surface of the mounting portion (111), and the connecting portion ( 121) abuts against the support part (112) and is connected and fixed through the first fastener (13). 2. The solar cell testing unit (10) according to claim 1, characterized in that, the support portion (112) is provided with a first surface on the same plane as one of the side surfaces of the installation portion (111) And a second surface opposite to the first surface, the second surface abuts against the connecting portion (121). 3. The solar cell testing unit (10) according to claim 1, characterized in that, the connecting portion (121) is provided with a first installation hole (1211) corresponding to the first fastener (13) , the support portion (112) is provided with a second installation hole (1121) corresponding to the first fastener (13), and the first fastener (13) is sequentially passed through the first installation hole (1211) and the second mounting hole (1121). 4. The solar cell testing unit (10) according to claim 3, characterized in that, the first fastener (13) is a screw, the first mounting hole (1211) is set as a counterbore, and the The head of the screw is embedded in the counterbore, and the second installation hole (1121) is a threaded hole suitable for the screw. 5. The solar cell testing unit (10) according to claim 4, characterized in that, the width of the support portion (112) is defined as W1, the width of the mounting portion (111) is defined as W2, and the connection The width of the part (121) is defined as W3, the depth of the counterbore is defined as S, the thickness of the portion where the head of the screw is exposed outside the first mounting hole (1211) is defined as d, and the connection part (121) The overall width after being combined with the support portion (112) is defined as W4; wherein, W1 is 4.8mm-5.2mm, W2 is 9.8mm-10.2mm, W3 is 4.4mm-4.6mm, and S is 2.9mm -3.1mm, d is 0.8mm-1.2mm, W4 is 10mm-11mm. 6. The solar cell testing unit (10) according to claim 1, characterized in that there are two supports (11), and the opposite ends of the probe row (12) are respectively provided with the connection part (121), the two connecting parts (121) are arranged corresponding to the two supports (11). 7. A solar cell testing device, characterized in that the solar cell testing device comprises a workbench, and a plurality of solar cell test units as claimed in any one of claims 1 to 6 are sequentially arranged at intervals on the workbench (10). 8. The solar cell testing device according to claim 7, characterized in that, a plurality of said solar cell testing units (10) comprise a plurality of first solar cell testing units (14), and said solar cell testing device also comprises The first fixing slot (20) provided on the workbench, a plurality of the first solar battery test units (14) are sequentially arranged at intervals along the first fixing slot (20), the first solar cell The installation part (111) of the battery test unit (14) can move and adjust the position along the first fixing slot (20), and is fastened to the first fixing slot (20) by the second fastener (40). )superior. 9. The solar cell testing device according to claim 8, characterized in that, a plurality of said solar cell testing units (10) comprises a plurality of second solar cell testing units (15), and said first solar cell testing unit (14) arranged alternately with the second solar cell testing unit (15); the solar cell testing device also includes a plurality of second fixing slots (30) arranged at intervals on the workbench, the first The two fixing slots (30) are correspondingly arranged between two adjacent first solar battery test units (14), and the installation part (111) of the second solar battery test unit (15) is fastened by the third Fastened on the second fixing slot (30); the length of the second solar battery test unit (15) is defined as L1, and the probe row (12) of the first solar battery test unit (14) ) is defined as L2, L1<L2. 10. The solar battery testing device according to claim 9, characterized in that, the second fixing slot (30) is detachably connected to the workbench; and/or, a plurality of solar battery testing The units (10) are arranged at equal intervals.