Light condensing device for testing solar cell and testing device

Abstract

The utility model relates to the technical field of solar cell testing, and provides a light condensation device for testing a solar cell and a testing device.The light condensation device for testing the solar cell comprises a supporting frame, a light-emitting device, a light-transmitting device, a light-transmitting device and a light-transmitting device, one end of the light-gathering cylinder is connected with the light-emitting device, the other end of the light-gathering cylinder extends downwards, and at least one first lens is arranged on the light-gathering cylinder; and the adjusting mechanism is located below the light condensing cylinder, the adjusting mechanism is connected with a second lens, and the adjusting mechanism can adjust the distance between the second lens and the first lens. According to the technical scheme, the illumination intensity can be adjusted under the condition that the xenon lamp does not need to be replaced, so that the illumination intensity of different multiples is provided, and the test requirement of the solar cell is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing solar cell pieces, in particular to a light condensing device and testing device for testing solar cell pieces. BACKGROUND

[0002] With the increasing market demand, the testing demand for solar cell pieces is also changing, and the current testing equipment, most of which provide light intensity testing for solar cell pieces, only adjusts the light emitting device. For example, the control assembly disclosed in the application No. CN201611038539.1 solar cell detection device can also control the intensity of the light. However, the intensity of the light is limited, and it is generally necessary to replace the xenon lamp to provide stronger multiple light intensity, which will also cause waste of cost. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to provide a light condensing device and testing device for testing solar cell pieces, which can adjust the light intensity without replacing the xenon lamp, thereby providing different multiple light intensity to meet the testing demand of solar cell pieces.

[0004] To solve the above technical problems, the present application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a light condensing device for testing solar cell pieces, comprising: a support frame, the support frame is provided with a light emitting device; a light condensing cylinder, one end of the light condensing cylinder is connected with the light emitting device, the other end extends downward, and at least one first lens is arranged on the light condensing cylinder; an adjusting mechanism, located below the light condensing cylinder, the adjusting mechanism is connected with a second lens, and the adjusting mechanism can adjust the distance between the second lens and the first lens.

[0006] As an embodiment, the support frame is provided with a support plate; the adjusting mechanism comprises a plurality of connecting rods and a connecting plate, one end of the connecting rod is connected with the support plate, the connecting plate is connected with the connecting rod and can slide relative to the connecting rod, and the connecting plate is connected with the second lens.

[0007] As an embodiment, the adjusting mechanism comprises a plurality of adjusting assemblies, each adjusting assembly is sleeved on the outer periphery of the corresponding connecting rod; the adjusting assembly comprises a first sleeve and a second sleeve, the first sleeve and the second sleeve can clamp the connecting plate, the second sleeve can be sleeved on the outer periphery of the first sleeve and provide clamping force of the connecting rod to the first sleeve.

[0008] As an implementation form, the light-emitting device comprises a light source and a lampshade arranged at the periphery of the light source, the lampshade is connected with the light collecting cylinder, and the radial dimension of the lampshade is greater than the radial dimension of the light collecting cylinder.

[0009] As an implementation form, the light collecting cylinder is composed of a plurality of connecting cylinders, two adjacent connecting cylinders are connected through a connecting piece, and the connecting piece is connected with the first lens.

[0010] As an implementation form, an air exhaust device is arranged above the support frame.

[0011] In the second aspect, the application provides a testing device for a solar cell, which comprises the light collecting device for testing a solar cell provided in the first aspect, further comprises: a carrier table, which is arranged below the adjusting mechanism and is used for loading a solar cell to be tested; and at least one adjusting device, which is arranged on one side of the carrier table and is used for connecting with a probe and adjusting the position of the probe, wherein the probe is used for contacting the solar cell.

[0012] As an implementation form, the adjusting device comprises a connecting part arranged above and used for connecting with the probe; the adjusting device further comprises a first screw rod, a second screw rod and a third screw rod connected with the connecting part, the first screw rod and the second screw rod are used for adjusting the position of the connecting part in the horizontal direction, and the third screw rod is used for adjusting the position of the connecting part in the vertical direction.

[0013] As an implementation form, the carrier table comprises a copper table arranged above and arranged in a containing groove used for containing the solar cell.

[0014] As an implementation form, the testing device further comprises a microscope, which is arranged on one side of the light collecting cylinder and is used for observing the positive and negative electrodes of the solar cell.

[0015] The technical scheme of the application has the following beneficial effects:

[0016] The light collecting device comprises a support frame, a light emitting device is arranged in the support frame, the light emitting device can emit strong light, one end of a light collecting cylinder is connected with the light emitting device, the light collecting cylinder can collect light and improve the concentration of light emitted by the light emitting device, meanwhile, the light collecting cylinder is further connected with a first lens, the first lens can collect light and improve the illumination intensity; a adjusting mechanism is further arranged below the light collecting cylinder, the adjusting mechanism is connected with a second lens, the second lens can further collect light and improve the illumination intensity, meanwhile, the adjusting mechanism can adjust the distance between the second lens and the first lens, when the distance between the second lens and the first lens changes, the light intensity passing through the second lens also changes, so that different multiple illumination tests can be provided to meet different test requirements, meanwhile, the test cost is reduced as the xenon lamp does not need to be replaced.

[0017] In addition, since the adjusting mechanism can adjust the illumination intensity, the light collecting device can use a small-power xenon lamp to generate strong illumination intensity, and the test cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation to the scope, for those skilled in the art, without creative labor, other related drawings can also be obtained according to these drawings.

[0019] Figure 1 The structure schematic diagram of the test device of the solar cell provided by the embodiments of the present application is shown in the figure;

[0020] Figure 2 The structure schematic diagram of the test device of the solar cell provided by the embodiments of the present application is shown in the figure;

[0021] Figure 3 The structure schematic diagram of the test device of the solar cell provided by the embodiments of the present application is shown in the figure;

[0022] Figure 4 The structure schematic diagram of the test device of the solar cell provided by the embodiments of the present application is shown in the figure.

[0023] Icons: 1-Support frame; 11-Support plate; 2-Light-emitting device; 21-Lampshade; 3-Concentrator; 4-Adjustment mechanism; 41-Connecting plate; 42-Connecting rod; 50-First sleeve; 51-Second sleeve; 6-Connector; 7-Exhaust device; 8-Stage; 81-Copper stage; 9-Adjustment device; 91-Connecting part; 92-First lead screw; 93-Second lead screw; 94-Third lead screw; 95-First base; 96-First movable block; 97-Adapter; 98-Third movable block; 981-Connecting column; 99-First guide plate; 10-Display microscope; 12-Sliding device; 13-Electrode; 14-Connecting stage; 15-Guide block; 16-Second movable block; 17-Adjustment block. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figure 1 As shown, in a first aspect, embodiments of this application provide a concentrating device for testing solar cells, including a support frame 1. A light-emitting device 2 is disposed within the support frame 1, emitting strong light. One end of a concentrating tube 3 is connected to the light-emitting device 2. Light passing through the concentrating tube 3 can concentrate the light, increasing the concentration of the light emitted by the light-emitting device 2. Simultaneously, the concentrating tube 3 is also connected to a first lens (not shown in the figure), which can concentrate the light and increase the light intensity. Below the concentrating tube 3, an adjustment mechanism 4 is also provided, connected to a second lens (not shown in the figure). The second lens can further concentrate the light passing through the first lens, thereby increasing the light intensity. Simultaneously, the adjustment mechanism 4 can adjust the distance between the second lens and the first lens. When the distance between the second lens and the first lens changes, the light intensity passing through the second lens also changes accordingly, thus providing different magnifications for light testing to meet different testing needs. Furthermore, it eliminates the need to replace the xenon lamp to provide stronger light for testing, reducing testing costs.

[0027] In addition, since the adjustment mechanism 4 of this application can adjust the light intensity, the focusing device of this application embodiment can also use a low-power xenon lamp to generate a stronger light intensity, which also reduces the testing cost.

[0028] Optionally, the support frame 1 comprises four columns, each column is square tube shape, stable structure, meanwhile, each side of the support frame 1 is provided with a side plate, which can shield the whole light collecting device, and protect the light emitting device 2 and the light collecting cylinder 3.

[0029] Optionally, the first lens and the second lens have the same structure.

[0030] Optionally, the first lens can be arranged at the end of the light collecting cylinder 3, or arranged at the middle position of the light collecting cylinder 3.

[0031] Optionally, the light collecting device further comprises a support table, the support frame 1 is arranged on the support table, which can stably support the support frame 1 and facilitate laboratory testing.

[0032] As shown in Figure 1 , optionally, the adjusting mechanism 4 is arranged at a distance from one end of the light collecting cylinder 3, so as to provide a moving space when disassembling and repairing the light collecting cylinder 3, and of course, it is convenient to replace the first lens.

[0033] As shown in Figure 1 and 2 , as an embodiment, the support frame 1 is provided with a support plate 11; the adjusting mechanism 4 comprises a plurality of connecting rods 42 and a connecting plate 41, one end of the connecting rod 42 is connected with the support plate 11, the connecting plate 41 is connected with the connecting rod 42, and the connecting plate 41 can slide relative to the connecting rod 42, and the connecting plate 41 is connected with the second lens, when the connecting plate 41 slides, it also drives the second lens to move, so as to adjust the distance between the first lens and the second lens, and different magnification of light intensity can be generated to meet different testing requirements.

[0034] Optionally, the periphery of the support plate 11 is connected with the support frame 1 through fasteners, so as to improve the stability of the structure and avoid the support plate 11 from shaking.

[0035] Optionally, the area of the connecting plate 41 is smaller than the area of the support plate 11, so as to avoid interference between the connecting plate 41 and the support plate 11 when the connecting plate 41 moves.

[0036] Optionally, four connecting rods 42 are arranged, and the four top corners of the connecting plate 41 can be connected with the connecting rods 42.

[0037] As shown in Figure 2 , optionally, the connecting plate 41 is fixed with a connecting piece 6, and the connecting piece 6 is provided with the second lens.

[0038] As shown in Figure 2As shown, as an embodiment, the adjusting mechanism 4 comprises a plurality of adjusting assemblies, each of which is sleeved on the outer periphery of the corresponding connecting rod 42; the adjusting assembly comprises a first sleeve member 50 and a second sleeve member 51, the first sleeve member 50 and the second sleeve member 51 can clasp the connecting plate 41, the second sleeve member 51 can be sleeved on the outer periphery of the first sleeve member 50 and provide a clamping force to the first sleeve member 50 on the connecting rod 42, so that the connecting plate 41 remains relatively stationary between the adjusting assembly and the connecting rod 42; when it is necessary to adjust the position of the connecting plate 41, the second sleeve member 51 can be loosened, and the first sleeve member 50 can slide on the connecting rod 42; when the position of the connecting plate 41 is determined, the second sleeve member 51 is connected with the first sleeve member 50 and is tightened, and the first sleeve member 50 can generate a clamping force on the connecting rod 42.

[0039] As shown in Figure 4 Optionally, the first sleeve member 50 and the second sleeve member 51 are threadedly connected, the first sleeve member 50 comprises a first part and a second part, the radial dimension of the first part is greater than that of the second part, the connecting plate 41 is located between the first part and the second sleeve member 51, the second sleeve member 51 is threadedly connected with the second part, and the inner surface of the first sleeve member 50 is an inner locking surface with a certain taper, that is, the inner surface of the first sleeve member 50 is increasingly tightened with the connecting rod 42 during the gradual tightening process of the thread connection between the second sleeve member 51 and the first part, so that the inner surface of the first sleeve member 50 plays a locking function, thereby achieving the fixation of the connecting plate 41; when it is necessary to adjust the position of the connecting plate 41, the second sleeve member 51 can be loosened, and the first sleeve member 50 can freely slide on the connecting rod 42.

[0040] Optionally, in some cases, the adjusting mechanism 4 can also use an electric telescopic rod, that is, the electric telescopic rod is connected with the connecting plate 41, and the electric telescopic rod can realize the telescopic function through the electric mode, thereby adjusting the position of the connecting plate 41.

[0041] As shown in Figure 1 As an embodiment, the light emitting device 2 comprises a light source and a lampshade 21 arranged on the outer periphery of the light source, the lampshade 21 can also play a role of condensing light for the light source, the lampshade 21 is connected with the light condensing cylinder 3, and the radial dimension of the lampshade 21 is greater than that of the light condensing cylinder 3; since the temperature around the light source is relatively high, the radial dimension of the lampshade 21 is made larger to avoid the temperature of the lampshade 21 being too high; and the radial dimension of the light condensing cylinder is smaller than that of the lampshade 21, so that the light can be collected.

[0042] Optionally, the light source can be a xenon lamp, which has a wide spectral range, high brightness and good stability, and is widely used in the testing of solar cell pieces.

[0043] Optionally, the lampshade 21 comprises a conical transition connecting section, facilitating threaded connection with the light collecting cylinder 3.

[0044] As shown in the figure, as an embodiment, the light collecting cylinder 3 is composed of multiple connecting cylinders, two adjacent connecting cylinders are connected by the connecting piece 6, the connecting piece 6 is connected with the first lens, thereby realizing connection of the first lens with the light collecting cylinder 3, and facilitating replacement of the first lens. Figure 1

[0045] Optionally, the light collecting cylinder 3 can be composed of two connecting cylinders, two ends of the connecting piece 6 are respectively threaded connected with the two connecting cylinders, and the inner periphery of the connecting piece 6 is provided with a groove accommodating the first lens, and the first lens can be located in the groove.

[0046] Optionally, the connecting piece 6 can be a rubber piece or a plastic piece, thereby playing a protective role on the first lens.

[0047] Optionally, multiple heat dissipation holes are formed on each connecting cylinder.

[0048] As shown in the figure, optionally, the bottom of the light collecting cylinder 3 can also be provided with a connecting piece 6, the connecting piece 6 is provided with the first lens, thereby making the light collecting cylinder 3 of the embodiment of the application connected with two first lenses, and higher illumination intensity can be provided. Figure 2

[0049] As shown in the figure, as an embodiment, the upper portion of the support frame 1 is provided with an air exhaust device 7, the air exhaust device 7 can cool the inside of the support frame 1, avoiding burning of the light emitting device 2. Figure 1 Optionally, the air exhaust device 7 comprises a fan or a blower, and the opening is directed towards the inside of the support frame 1, and the hot air in the support frame 1 can be exhausted to the outside of the support frame 1.

[0050] Optionally, the light collecting device of the embodiment of the application can generate 500000W / m 2 of test conditions.

[0051] As shown in the figure, in the second aspect, the embodiment of the application provides a testing device for a solar cell sheet, comprising the light collecting device for testing the solar cell sheet provided in the first aspect, further comprising: a carrier stage 8 located below the adjusting mechanism 4, used for loading the solar cell sheet to be tested; at least one adjusting device 9 located on one side of the carrier stage 8, the adjusting device 9 is used for being connected with a probe (not shown in the figure), and the position of the probe can be adjusted, so that the probe is used for contacting the solar cell sheet, thereby transmitting the test data on the probe to a computer display.

[0052] Figure 1

[0053] ​​​​Optionally, the object table 8 can place a 1x1cm solar cell, thus the testing device of the embodiment of the application can test some smaller size solar cells.

[0054] Optionally, the adjusting device 9 can be provided with two, respectively located on both sides of the object table 8, thus the solar cell can be tested.

[0055] As shown in Figure 1 and 3 Optionally, the two adjusting devices 9 and the object table 8 are fixed on the connecting table 14, the testing device further comprises a sliding device 12, the sliding device 12 is connected with the connecting table 14, when the solar cell needs to be placed, the connecting table 14 can be pulled out from the support frame 1 through the sliding device 12, when the solar cell is placed, the connecting table 14 can be pushed into the support frame 1 through the sliding device 12. The sliding device 12 can comprise a slide rail and a slide block.

[0056] As shown in Figure 3 As an embodiment, the adjusting device 9 comprises a connecting part 91 located above, the connecting part 91 is used for probe connection; the adjusting device 9 further comprises a first lead screw 92, a second lead screw 93 and a third lead screw 94 connected with the connecting part 91, the first lead screw 92 can adjust the X-axis direction of the connecting part 91, the second lead screw 93 can adjust the Y-axis direction of the connecting part 91, the first lead screw 92 and the second lead screw 93 can cooperate to realize the adjustment of the horizontal direction position of the connecting part 91, the third lead screw 94 is used for adjusting the vertical direction position of the connecting part 91, so that the probe on the adjusting device 9 can contact with the solar cell.

[0057] Optionally, the adjusting device 9 comprises a first base 95 connected with the connecting table 14, and a first movable block 96 above the first base 95, the first movable block 96 being connected with the connecting part 91, the first movable block 96 being connected with the first base 95 and having a gap therebetween to reduce the friction therebetween; the first movable block 96 being movable relative to the first base 95 along the X-axis direction, the first base 95 being provided with a first lead screw 92 on one side thereof, and the adjusting device 9 being provided with an adjusting block 17 on one side of the first movable block 96, the adjusting block 17 being located on the same side as the first lead screw 92, the first lead screw 92 being threadedly connected with the adjusting block 17, i.e. when the first lead screw 92 is rotated, the distance between the adjusting block 17 and the first lead screw 92 can be adjusted to move the first movable block 96 relative to the first base 95 along the X-axis direction; on the opposite side of the first lead screw 92, the first base 95 is further provided with a first guide piece 99, the first guide piece 99 being provided with a long hole extending along the X-axis direction, and on the same side, the first movable block 96 is connected with a guide block 15, the guide block 15 being connected with the first movable block 96 by penetrating through the long hole, the guide block 15 also supporting and guiding the first movable block 96, so that when the first lead screw 92 is rotated, the guide block 15 slides along the long hole to facilitate the sliding of the first movable block 96 relative to the first base 95, thereby realizing the movement of the connecting part 91 along the X-axis direction controlled by the first lead screw 92.

[0058] As shown in Figure 3 , optionally, the first lead screw 92 and the first guide piece 99 are located on two sides of the first base 95 along the X-axis direction, respectively.

[0059] As shown in Figure 3 and 4 , optionally, the adjusting device 9 further comprises a second base and a second movable block 16, the second movable block 16 being located above the second base, the second movable block 16 being connected with the connecting part 91, the second base being fixedly connected with the first movable block 96, the second movable block 16 being connected with the second base and having a gap therebetween to reduce the friction therebetween, the first movable block 96 being capable of driving the second base and the second movable block 16 to move along the X-axis direction.

[0060] As shown in Figure 3 and 4As shown, optionally, one side of the second base is provided with a second screw rod 93, and one side of the second movable block 16 is also provided with an adjusting block 17. The adjusting block 17 connected with the second movable block 16 is located at the same side of the second screw rod 93. The second screw rod 93 can be threadedly connected with the adjusting block 17, that is, when the second screw rod 93 is rotated, the distance between the adjusting block 17 and the second screw rod 93 can be adjusted, so as to realize the movement of the second movable block 16 relative to the second base along the Y-axis direction. On the opposite side of the second screw rod 93, the second base is further fixed with a second guide piece. The second guide piece is provided with a long hole extending along the Y-axis direction. On the same side, the second movable block 16 is connected with a guide block 15. The guide block 15 passes through the long hole and is connected with the second movable block 16, and also plays a supporting and guiding role on the second movable block 16. In this way, when the second screw rod 93 is rotated, the guide block 15 slides along the long hole, so as to facilitate the sliding of the second movable block 16 relative to the second base, thereby realizing the movement of the connecting part 91 controlled by the second screw rod 93 along the Y-axis direction.

[0061] Optionally, the second screw rod 93 and the second guide piece are respectively located on two sides of the second base along the Y-axis direction.

[0062] As shown in Figure 3 and 4 Optionally, the adjusting device 9 further comprises a third base and a third movable block 98. The third movable block 98 is connected with the connecting part 91. The adjusting device 9 further comprises an adapter 97. The adapter 97 is fixedly connected with the third base and can rotate relative to the third base. The third movable block 98 is located above the third base. The third movable block 98 further comprises a protruding connecting column 981. The adapter 97 is in abutment with the third screw rod 94 and the connecting column 981, respectively. When the third screw rod 94 is rotated along the horizontal direction, the adapter 97 can be abutted and rotated. The adapter 97 generates a rotating force and also pushes the third movable block 98 to move upward, so as to realize the movement of the connecting part 91 along the Z-axis direction. The third base is further fixed with a third guide piece. The third guide piece is provided with a long hole extending along the Z-axis direction. On the same side, the third movable block 98 is connected with a guide block 15. The guide block 15 passes through the long hole and is connected with the third movable block 98, and also plays a supporting and guiding role on the third movable block 98. In this way, when the third screw rod 94 is rotated, the guide block 15 slides along the long hole, so as to facilitate the sliding of the third movable block 98 relative to the third base, thereby realizing the movement of the connecting part 91 controlled by the third screw rod 94 along the Z-axis direction.

[0063] Optionally, the adapter 97 comprises two right-angled abutment portions. The two abutment portions are respectively in abutment with the third screw rod 94 and the connecting column 981. In this way, when the third screw rod 94 abuts with one of the abutment portions, the other abutment portion generates an upward force on the third movable block 98.

[0064] Optionally, the connecting part 91 is provided with a hole, and a clamping member can be installed in the hole. The clamping member can clamp the probe toward the solar cell. The clamping member can be a copper strip, which is inserted into the hole and connected to the probe.

[0065] like Figure 2 As shown, in one embodiment, the stage 8 includes a copper platform 81 located above, which is disposed in a receiving groove for accommodating solar cells. Thus, when the solar cells are placed in the receiving groove, the copper platform 81 is conductive and can contact one of the surfaces of the solar cells, which is equivalent to the copper platform 81 contacting one of the electrodes 13 of the solar cells, enabling the acquisition of data such as voltage and current of the solar cells.

[0066] Optionally, the Copper Platform 81 can be connected to a monitor via a data cable.

[0067] like Figure 4 As shown, optionally, the solar cell also includes a protruding electrode 13. By setting the protruding electrode 13, the protruding electrode 13 protrudes out of the receiving groove, which facilitates the probe to contact the protruding electrode 13, so that the probe can cooperate with the copper platform 81 to contact the positive and negative electrodes of the solar cell for testing.

[0068] Optionally, an insulating plate can be placed below the copper body.

[0069] like Figure 1 As shown, in one embodiment, the testing device also includes a display microscope 10, which is located on one side of the condenser tube 3. Since the solar cell tested in this embodiment has a small area, it is easy to cause eye fatigue when observing with the naked eye. Therefore, a display microscope 10 is provided to observe the positive and negative electrodes of the solar cell.

[0070] Alternatively, the microscope 10 can be purchased from the market.

[0071] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0073] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are used herein merely as labels, and are not intended to impose ordinal import.

Claims

1. A light condensing device for testing a solar cell, characterized by, include: A support frame, wherein a light-emitting device is provided within the support frame; A focusing tube, one end of which is connected to the light-emitting device, and the other end extends downward, and at least one first lens is provided on the focusing tube; An adjustment mechanism is located below the focusing tube. The adjustment mechanism is connected to a second lens and can adjust the distance between the second lens and the first lens.

2. The light collecting device according to claim 1, characterized in that The support frame is equipped with a support plate; The adjustment mechanism includes multiple connecting rods and a connecting plate. One end of each connecting rod is connected to the support plate. The connecting plate is connected to the connecting rod and can slide relative to the connecting rod. The connecting plate is connected to the second lens.

3. The light collecting device of claim 2, wherein The adjustment mechanism includes multiple adjustment components, each of which is sleeved on the outer periphery of the corresponding connecting rod; The adjustment assembly includes a first sleeve and a second sleeve, which can clamp the connecting plate. The second sleeve can be sleeved on the outer periphery of the first sleeve and provides a clamping force on the connecting rod to the first sleeve.

4. The light collecting device according to any one of claims 1 to 3, characterized in that The light-emitting device includes a light source and a lampshade disposed around the outer periphery of the light source. The lampshade is connected to the focusing tube, and the radial dimension of the lampshade is larger than the radial dimension of the focusing tube.

5. The light collecting device according to any one of claims 1 to 3, characterized in that The focusing tube is composed of multiple connecting tubes, and adjacent connecting tubes are connected by a connector, which is connected to the first lens.

6. The light collecting device according to any one of claims 1 to 3, characterized in that An exhaust system is provided above the support frame.

7. A testing device for solar cells, characterized in that The concentrating device for testing solar cells according to any one of claims 1 to 6 further includes: A stage, located below the adjustment mechanism, is used to mount the solar cell to be tested; At least one adjustment device is located on one side of the stage, the adjustment device being connected to a probe and being able to adjust the position of the probe, the probe being used to contact the solar cell.

8. The test device of claim 7, wherein, The adjustment device includes a connecting part located at the top, the connecting part being used for probe connection; The adjusting device further includes a first lead screw, a second lead screw, and a third lead screw connected to the connecting part. The first lead screw and the second lead screw are used to adjust the horizontal position of the connecting part, and the third lead screw is used to adjust the vertical position of the connecting part.

9. The test device of claim 7 or 8, wherein, The stage includes a copper platform located above, which is situated in a receiving slot for accommodating solar cells.

10. The test device of claim 7 or 8, wherein, The testing apparatus also includes a microscope located on one side of the condenser tube for observing the positive and negative electrodes of the solar cell.

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