CN219611725U - Solar cell testing device and unit - Google Patents

Abstract

The utility model relates to a solar cell testing device and a unit. The support comprises a mounting part and a supporting part, wherein the supporting part is connected to one side of the bottom surface of the mounting part. Because the supporting part is connected to one side of the bottom surface of the installation part, the space is vacated below the bottom surface of the installation part to place the connecting part, and after the connecting part and the supporting part are connected and fixed through the first fastening piece, the overall width dimension is smaller compared with the width dimension of the middle part of the bottom surface of the installation part, which is used for connecting the supporting part to the installation part, so that more solar cell test units can be placed in a limited space, the number of probe rows can be increased to be consistent with the number of the main grids of the SMBB battery pieces, the electric performance test operation of the MBB battery pieces and the SMBB battery pieces can be respectively satisfied, the accurate electric performance test is realized, and the on-line internal defect detection is clear and discernable.

Description

Solar cell testing device and unit

Technical Field

The present utility model relates to the field of solar cell testing technologies, and in particular, to a solar cell testing device and unit.

Background

With the innovation of silver paste technology and the improvement of printing technology, multi-main gate technology (abbreviated as MBB) gradually becomes the main stream of the market, and super-multi-main gate technology (abbreviated as SMBB) starts to appear. The solar cell metal electrode mainly comprises a main grid and a fine grid, wherein the main grid is used for converging and connecting in series, and the fine grid is used for collecting photo-generated carriers. As the size of mainstream battery pieces increases, for example, battery pieces of heterojunction battery (HJT) have progressed from MBB battery including 12 main grids to SMBB battery including 18 main grids.

When the battery piece is subjected to electrical performance test (comprising current and voltage), the mechanical arm conveys the battery piece to the rotary table suction nozzle in the black room, then the rotary table rotates to put the battery piece into the probe row, the probe row is pressed to correspond to the main grid, the solar simulator simulates sunlight by using the xenon lamp, and the electrical performance test is performed on the battery piece. And after the test is finished, the probe is discharged, the turntable rotates, the battery piece is carried out of the black chamber by the mechanical arm and is placed on the conveyor belt, and the battery piece enters different sorting material boxes according to different tested electrical properties.

However, since the number of the main grids is large, when the number of the probe rows is small during the electrical performance test, the electrical performance of the battery piece tested during the electrical performance test operation may deviate from the actual electrical performance. The testing device of 12 probe rows used in the production line is mainly used for performing related electrical performance testing operation on the battery plates of the MBB battery (also called MBB battery plates for short). When the electrical performance test operation is performed on the battery piece (also called as SMBB battery piece for short) of the SMBB battery, the on-line internal defect detection (EL for short) is not clear enough, the deviation of the test efficiency (Eta for short) is +/-0.2%, and the electrical performance test result is not accurate enough.

Disclosure of Invention

Based on the above, it is necessary to overcome the defects in the prior art, and to provide a solar cell testing device and unit, which can perform accurate electrical performance tests on multiple main grid cells and ultra-multiple main grid cells respectively, and the on-line internal defect detection is clear and distinguishable.

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

the support comprises an installation part and a supporting part, and the supporting part is connected to one side of the bottom surface of the installation part; and

the probe row, the tip of probe row is equipped with connecting portion, connecting portion are located the bottom surface below of installation department, connecting portion with supporting part butt each other and connect fixedly through first fastener.

In one embodiment, the support portion is provided with a first surface on the same plane as one side surface of the mounting portion and a second surface opposite to the first surface, and the second surface and the connecting portion are abutted to each other.

In one embodiment, the connecting portion is provided with a first mounting hole corresponding to the first fastening piece, the supporting portion is provided with a second mounting hole corresponding to the first fastening piece, and the first fastening piece sequentially penetrates through the first mounting hole and the second mounting hole.

In one embodiment, the first fastener is a screw, the first mounting hole is a counter bore, the head of the screw is embedded into the counter bore, and the second mounting hole is a threaded hole adapted to the screw.

In one embodiment, the width of the supporting portion is defined as W1, the width of the mounting portion is defined as W2, the width of the connecting portion is defined as W3, the depth of the counter bore is defined as S, the size and thickness of the portion of the head portion of the screw exposed out of the first mounting hole are defined as d, and the overall width of the connecting portion and the supporting portion after being combined is defined as W4; wherein W1 is 4.8mm-5.2mm, W2 is 9.8mm-10.2mm, W3 is 4.4mm-4.6mm, S is 2.9mm-3.1mm, d is 0.8mm-1.2mm, and W4 is 10mm-11mm.

In one embodiment, the number of the supports is two, the two opposite ends of the probe row are respectively provided with the connecting parts, and the two connecting parts are correspondingly arranged with the two supports.

A solar cell testing device comprises a workbench and a plurality of solar cell testing units which are sequentially arranged on the workbench at intervals.

In one embodiment, the plurality of solar cell test units include a plurality of first solar cell test units, the solar cell test device further includes a first fixing slot disposed on the workbench, the plurality of first solar cell test units are sequentially disposed at intervals along the first fixing slot, and the mounting portion of the first solar cell test unit can move along the first fixing slot to adjust the position and is fastened on the first fixing slot through a second fastening member.

In one embodiment, the plurality of solar cell test units includes a plurality of second solar cell test units, and the first solar cell test units and the second solar cell test units are alternately arranged; the solar cell testing device further comprises a plurality of second fixing clamping grooves which are arranged on the workbench, wherein the second fixing clamping grooves are correspondingly arranged between two adjacent first solar cell testing units, and the mounting parts of the second solar cell testing units are fastened on the second fixing clamping grooves through third fasteners; the length of the second solar cell testing unit is defined as L1, and the length of the probe row of the first solar cell testing unit is defined as L2, wherein L1 is less than L2.

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

According to the solar cell testing device and unit, the supporting part is connected to one side of the bottom surface of the mounting part, so that the space is vacated below the bottom surface of the mounting part to place the connecting part, after the connecting part and the supporting part are connected and fixed through the first fastening piece, the overall width dimension is smaller than that of the middle part of the bottom surface of the mounting part, which is used for connecting the supporting part to the mounting part in the related art, so that more solar cell testing units can be placed in a limited space, the number of probe rows can be increased to be consistent with the number of main grids of the SMBB battery pieces, the electrical performance testing operation of the MBB battery pieces and the SMBB battery pieces can be respectively met, the accurate electrical performance testing is realized, and the on-line internal defect detection is clear and discernable.

Drawings

Fig. 1 is a view of a support according to an embodiment of the present utility model.

Fig. 2 is another view block diagram of the structure shown in fig. 1.

Fig. 3 is a view angle structure diagram of a probe row according to an embodiment of the present utility model.

Fig. 4 is a view of a structure of a connection part of a probe row according to an embodiment of the present utility model.

Fig. 5 is a structural view showing a probe row mounted on a support according to an embodiment of the present utility model.

Fig. 6 is a block diagram of a first solar cell testing unit according to an embodiment of the utility model mounted on a first fixing slot.

Fig. 7 is a top view of a solar cell testing apparatus according to an embodiment of the present utility model.

10. A solar cell testing unit; 11. a support; 111. a mounting part; 1111. a third mounting hole; 112. a support part; 1121. a second mounting hole; 12. a probe row; 121. a connection part; 1211. a first mounting hole; 13. a first fastener; 14. a first solar cell test unit; 15. a second solar cell testing unit; 20. a first fixing slot; 21. a top panel; 211. a strip-shaped opening; 30. a second fixing slot; 40. and a second fastener.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

As described in the background art, in the electrical performance test operation of the battery sheet for the SMBB battery in the prior art, there is a problem that on-line internal defect detection (EL for short) is not clear enough, the deviation of test efficiency (Eta for short) is ±0.2%, and the electrical performance test result is not accurate enough, and the applicant has found that the problem arises because the number of probe rows of the test device of 12 probe rows currently used in the production line is smaller than the number (18 probe rows) required by the SMBB battery, and for the SMBB battery with a main grid interval of 11.29mm, the width of the installed probe rows is 17.6mm, for example, so that the space is insufficient to increase 6 probe rows to make the number reach 18.

Based on the above reasons, the utility model provides a solar cell testing device and a solar cell testing unit, which can respectively test the electrical performance of a plurality of main grid cells and a plurality of super-main grid cells, and can detect on-line internal defects in a clear and distinguishable scheme.

Referring to fig. 1 to 5, fig. 1 shows a view of a support 11 according to an embodiment of the present utility model. Fig. 2 shows another view block diagram of the structure shown in fig. 1. Fig. 3 shows a view of a probe row 12 according to an embodiment of the present utility model. Fig. 4 is a view showing a structure of a view of the connection part 121 of the probe row 12 according to an embodiment of the present utility model. Fig. 5 shows a structure in which a probe row 12 according to an embodiment of the present utility model is mounted on a holder 11. In one embodiment of the present utility model, a solar cell testing unit 10 is provided, where the solar cell testing 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 support 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 connection 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 are abutted against each other and connected and fixed by the first fastener 13.

In the solar cell test unit 10, since the supporting portion 112 is connected to one side of the bottom surface of the mounting portion 111, so that a space is vacated below the bottom surface of the mounting portion 111 to place the connecting portion 121, after the connecting portion 121 and the supporting portion 112 are connected and fixed by the first fastener 13, the overall width dimension is smaller than that of the related art in which the supporting portion 112 is connected to the middle position of the bottom surface of the mounting portion 111, so that more solar cell test units 10 can be placed in a limited space, and the number of probe rows 12 can be increased to be consistent with the number of main grids of the SMBB battery pieces, so that the electrical performance test operation of the MBB battery pieces and the SMBB battery pieces can be respectively satisfied, accurate electrical performance test can be realized, and the on-line internal defect detection is clear and discernable.

Referring to fig. 5, in one embodiment, the supporting portion 112 is provided with a first surface on the same plane as one side surface 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 sufficient space can be provided for the connection portion 121 below the bottom surface of the mounting portion 111, so that the width dimension of the whole after the connection portion 121 and the support portion 112 are connected and combined is sufficiently small.

Alternatively, the mounting portion 111, the supporting portion 112, and the connecting portion 121 may be configured in various regular and irregular shapes, such as a plate shape, a block shape, or the like, and may be flexibly adjusted and configured according to actual requirements, which is not limited herein.

In the present embodiment, in order to achieve mounting stability and sufficient structural strength, the mounting portion 111, the supporting portion 112, and the connecting portion 121 are each provided in, for example, a square block shape.

Referring to fig. 1 to 5, in one embodiment, the connection portion 121 is provided with a first mounting hole 1211 corresponding to the first fastening member 13, the support portion 112 is provided with a second mounting hole 1121 corresponding to the first fastening member 13, and the first fastening member 13 sequentially penetrates through the first mounting hole 1211 and the second mounting hole 1121. In this way, the first fastener 13 is inserted into the first and second mounting holes 1211 and 1121 to connect and fix both the connection portion 121 and the support portion 112.

Alternatively, to increase the connection stability, more than one, for example two, three or another number of first fasteners 13 are provided. The number of the first and second mounting holes 1211 and 1121 is set corresponding to the number of the first fasteners 13.

It should be noted that, the first fastener 13 includes, but is not limited to, a screw, a bolt, a screw, a pin, a rivet, a clamping member, and the like, and may be flexibly selected according to practical needs.

Referring to fig. 3 to 5, in one embodiment, the first fastener 13 is a screw, the first mounting hole 1211 is a counter bore, the head of the screw is embedded in the counter bore, and the second mounting hole 1121 is a threaded hole corresponding to the screw. Thus, since the head of the screw is embedded into the counter bore, the size of the portion of the head of the screw exposed outside the first mounting hole 1211 is smaller, that is, the occupied space is smaller, or the head of the screw is totally hidden inside the first mounting hole 1211, so that the overall width size is smaller, and more solar cell test units 10 can be mounted.

Referring to fig. 2, 4 and 5, in one embodiment, the width of the supporting 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, the depth of the counterbore is defined as S, the thickness of the portion of the head portion of the screw exposed outside the first mounting hole 1211 is defined as d, and the overall width of the combined connecting portion 121 and supporting 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, S is 2.9mm-3.1mm, d is 0.8mm-1.2mm, and W4 is 10mm-11mm.

In one embodiment, W1 is 5mm, W2 is 10mm, W3 is 4.6mm, S is 3mm, d is 1mm, and W4 is 10.6mm. Therefore, the distance of 10.6mm is smaller than 11.29mm of the main grid of the SMMB battery piece, and the probe rows 12 can be arranged in one-to-one correspondence with the main grids of the SMMB battery piece.

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

Alternatively, the probe row 12 and the connecting portion 121 are integrally formed, for example, and are made of PVB, and have the same thickness as the width W3 of the connecting portion 121, for example, 4.6mm. However, the first mounting hole 1211 can be punched by the connection portion 121 due to the limitation of the PVB material, but the threads cannot be left, and the connection portion 121 can be fixed on the support portion 112 of the support 11 only by matching the end of the screw with the threads of the second mounting hole 1121 during the mounting.

Referring to fig. 1,5 and 7, fig. 7 is a schematic top view of a solar cell testing apparatus according to an embodiment of the utility model. In one embodiment, the number of the supports 11 is two, and the opposite ends of the probe row 12 are respectively provided with a connecting part 121, and the two connecting parts 121 are correspondingly arranged with the two supports 11. Thus, the probe row 12 is fixedly connected to the workbench through the two supports 11 connected to the two ends of the probe row, and is stably mounted on the workbench.

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

Referring to fig. 1,5 and 7, in one embodiment, a solar cell testing apparatus includes a workbench (not shown), and a plurality of solar cell testing units 10 of any of the above embodiments sequentially disposed on the workbench at intervals.

In the solar cell testing device, since the supporting portion 112 is connected to one side of the bottom surface of the mounting portion 111, so that a space is reserved below the bottom surface of the mounting portion 111 to place the connecting portion 121, after the connecting portion 121 and the supporting portion 112 are connected and fixed by the first fastener 13, the overall width dimension is smaller than that of the related art in which the supporting portion 112 is connected to the middle position of the bottom surface of the mounting portion 111, so that more solar cell testing units 10 can be placed in a limited space, the number of probe rows 12 can be increased to be consistent with the number of main grids of the SMBB battery pieces, so that the electrical performance testing operation of the MBB battery pieces and the SMBB battery pieces can be respectively satisfied, accurate electrical performance testing can be realized, and on-line internal defect detection is clear and discernable.

Referring to fig. 6 and 7, in one embodiment, the plurality of solar cell testing units 10 includes a plurality of first solar cell testing units 14, the solar cell testing apparatus further includes a first fixing slot 20 disposed on the workbench, the plurality of first solar cell testing units 14 are sequentially disposed at intervals along the first fixing slot 20, and the mounting portion 111 of the first solar cell testing unit 14 can move along the first fixing slot 20 to adjust a position and is fastened to the first fixing slot 20 by a second fastening member 40. In this way, after the second fastening piece 40 is loosened, the position of the installation part 111 on the first fixing clamping groove 20 is moved and adjusted, the installation part 111 is fastened on the first fixing clamping groove 20 through the second fastening piece 40, so that the distance between two adjacent first solar cell testing units 14 can be flexibly adjusted according to the main grid positions of the battery pieces, the testing operation of the battery pieces with different main grid arrangement modes is adapted, the adjusting operation is more convenient, and the efficiency is higher.

Referring to fig. 1 and 6, in one embodiment, the second fastener 40 comprises a bolt and a nut. The mounting portion 111 of the first solar cell testing unit 14 is provided with a third mounting hole 1111. The first fixing clamping groove 20 is provided with a top panel 21, the top panel 21 is provided with a strip-shaped opening 211, a bolt penetrates through the third mounting hole 1111 and the strip-shaped opening 211 to extend into the first fixing clamping groove 20 and then is connected with a nut, and after the nut is screwed, the second fastener 40 enables the mounting portion 111 of the first solar cell testing unit 14 to be fastened on the first fixing clamping groove 20. In addition, the first fixing clip groove 20 is further provided with a bottom panel disposed opposite to the top panel 21, which includes but is not limited to being fixed to a table.

Referring to fig. 7, in one embodiment, the plurality of solar cell test units 10 includes a plurality of second solar cell test units 15. The first solar cell test units 14 are alternately arranged with the second solar cell test units 15. The solar cell testing device further comprises a plurality of second fixing clamping grooves 30 arranged on the workbench. The second fixing clip groove 30 is correspondingly disposed between two adjacent first solar cell testing units 14. The mounting portion 111 of the second solar cell testing unit 15 is fastened to the second fixing clip groove 30 by a third fastener. The length of the second solar cell testing unit 15 is defined as L1, and the length of the probe row 12 of the first solar cell testing unit 14 is defined as L2, L1< L2. In this way, the second solar cell testing units 15 are arranged in the area between the probe rows 12 of two adjacent first solar cell testing units 14, and correspondingly avoid the first fixing clamping grooves 20 and the supports 11 of the first solar cell testing units 14, so that limited space is utilized to the maximum extent, the probe rows 12 are distributed in a staggered manner, and the requirement of more main grid tests is met.

It should be noted that, the number relationship between the first solar cell testing unit 14 and the second solar cell testing unit 15 can be flexibly adjusted and set according to actual requirements, including but not limited to 1:1,2:1,3:1,4:1,5:1,1:2,1:3, etc.

Specifically, when the number relationship of the first solar cell test units 14 and the second solar cell test units 15 is set to 1:1, the first solar cell test units 14 and the second solar cell test units 15 are alternately arranged in order. When the number relation between the first solar cell test units 14 and the second solar cell test units 15 is set to be 2:1, one second solar cell test unit 15 is correspondingly arranged when two first solar cell test units 14 are arranged.

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

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

The "supporting portion 112" may be a part of the "mounting portion 111", that is, the "supporting portion 112" and the "other part of the mounting portion 111" may be integrally formed; or may be a separate member separable from the other portion of the mounting portion 111, that is, the support portion 112 may be manufactured separately and then combined with the other portion of the mounting portion 111 into a single body.

It should be noted that, the "connection portion 121" may be "a portion of the probe row 12", that is, "the connection portion 121" is integrally formed with "other portions of the probe row 12"; or a separate member which is separable from the other part of the probe row 12, that is, the connecting part 121 may be manufactured separately and then combined with the other part of the probe row 12 into a whole.

In the description of the present utility model, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A solar cell testing unit (10), characterized in that the solar cell testing unit (10) comprises:

a support (11), wherein the support (11) comprises 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

the probe row (12), the tip of probe row (12) is equipped with connecting portion (121), connecting portion (121) are located the bottom surface below of installation department (111), connecting portion (121) with supporting portion (112) butt each other and connect fixedly through first fastener (13).

2. The solar cell testing unit (10) according to claim 1, wherein the support portion (112) is provided with a first face on the same plane as one of the side faces of the mounting portion (111) and a second face disposed opposite to the first face, the second face being in contact with the connecting portion (121).

3. The solar cell testing unit (10) according to claim 1, wherein the connecting portion (121) is provided with a first mounting hole (1211) corresponding to the first fastening member (13), the supporting portion (112) is provided with a second mounting hole (1121) corresponding to the first fastening member (13), and the first fastening member (13) is sequentially inserted into the first mounting hole (1211) and the second mounting hole (1121).

4. A solar cell testing unit (10) according to claim 3, wherein the first fastener (13) is a screw, the first mounting hole (1211) is provided as a counter bore, the head of the screw is embedded into the counter bore, and the second mounting hole (1121) is a threaded hole adapted to the screw.

5. The solar cell testing unit (10) according to claim 4, wherein the width of the supporting 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, the depth of the counterbore is defined as S, the thickness of the portion of the head portion of the screw exposed outside the first mounting hole (1211) is defined as d, and the overall width of the connecting portion (121) combined with the supporting 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, S is 2.9mm-3.1mm, d is 0.8mm-1.2mm, and W4 is 10mm-11mm.

6. Solar cell testing unit (10) according to claim 1, characterized in that the number of the support (11) is two, the opposite ends of the probe row (12) are respectively provided with the connecting parts (121), and the two connecting parts (121) are arranged corresponding to the two support (11).

7. A solar cell testing device, characterized in that it comprises a table and a plurality of solar cell testing units (10) according to any one of claims 1 to 6, which are arranged on the table in sequence at intervals.

8. The solar cell testing apparatus according to claim 7, wherein the plurality of solar cell testing units (10) includes a plurality of first solar cell testing units (14), the solar cell testing apparatus further includes a first fixing clip groove (20) provided on the table, the plurality of first solar cell testing units (14) are sequentially provided at intervals along the first fixing clip groove (20), and the mounting portion (111) of the first solar cell testing unit (14) is capable of moving an adjustment position along the first fixing clip groove (20) and is fastened to the first fixing clip groove (20) by a second fastening member (40).

9. The solar cell testing apparatus according to claim 8, wherein a plurality of the solar cell testing units (10) includes a plurality of second solar cell testing units (15), the first solar cell testing units (14) being alternately arranged with the second solar cell testing units (15); the solar cell testing device further comprises a plurality of second fixing clamping grooves (30) which are arranged on the workbench at intervals, wherein the second fixing clamping grooves (30) are correspondingly arranged between two adjacent first solar cell testing units (14), and the mounting part (111) of each second solar cell testing unit (15) is fastened on the second fixing clamping groove (30) through a third fastening piece; the length of the second solar cell testing unit (15) is defined as L1, and the length of the probe row (12) of the first solar cell testing unit (14) is defined as L2, wherein L1< L2.

10. The solar cell testing apparatus according to claim 9, wherein the second fixing clip groove (30) is detachably connected to the table; and/or a plurality of the solar cell test units (10) are arranged at equal intervals.