Test system of TOPCON perovskite laminated photovoltaic cell

Abstract

The invention discloses a test system for a TOPCON perovskite laminated photovoltaic cell. The test system comprises a photovoltaic cell, a conveyor belt, a mounting plate, a driving assembly and a power connection assembly. A driving piece is arranged at the upper end of the mounting plate and pushes the driving assembly to be stressed to change the state, and the two sides of the driving assembly are kept close to the middle photovoltaic cell. According to the test system of the TOPCON perovskite laminated photovoltaic cell, rapid assembly line type detection is carried out on the photovoltaic cell which is assembled before leaving a factory, and normal work of the photovoltaic cell during assembly and use can be ensured. The driving piece drives the driving seat in the driving assembly to move, so that the position of the sliding piece is changed, the power connection assembly at the lower end of the sliding piece is driven to approach the power connection terminal, rapid electric connection is achieved, the factory area can be saved, rapid detection after assembly is achieved, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to photovoltaic cell testing technology, and in particular to a testing system for TOPCON perovskite stacked photovoltaic cells. Background Art

[0002] TOPCon is a technology that passivates the surface of crystalline silicon photovoltaic cells by preparing a tunneling oxide passivation contact layer, achieving selective collection of carriers and improving the conversion efficiency of crystalline silicon photovoltaic cells. After production and assembly, TOPCON perovskite stacked photovoltaic cells need to be tested to detect the internal current. The traditional detection method uses manual clamps to clamp the power terminals of the photovoltaic cells. Due to the large area of ​​general photovoltaic cells, manual electrical connection is not only inefficient, but also requires the cooperation of multiple people. Therefore, an automated detection system is needed to improve efficiency. Summary of the Invention

[0003] In order to solve the defects of the above-mentioned prior art, the present invention proposes a testing system for TOPCON perovskite tandem photovoltaic cells.

[0004] The technical solution of the present invention is achieved as follows:

[0005] A TOPCON perovskite tandem photovoltaic cell testing system, comprising:

[0006] A photovoltaic cell to be tested, wherein power terminals are symmetrically arranged on both sides of the photovoltaic cell;

[0007] A conveyor belt for conveying photovoltaic cells, wherein baffles are provided on both sides of the conveyor belt, and the photovoltaic cells are arranged between the baffles;

[0008] A mounting plate is provided above the conveyor belt, with a driving member provided at the upper end of the mounting plate and a driving assembly cooperating with the driving member provided at the lower end of the mounting plate. The driving member pushes the driving assembly to change its state, keeping both sides of the driving assembly close to the photovoltaic cell in the middle.

[0009] and a power connection assembly mounted on the driving assembly, wherein the power connection assembly contacts with the power connection terminal, and the power connection terminal pushes the power connection assembly to deform and clamp it on the power connection terminal to achieve electrical connection;

[0010] Among them, the driving assembly is provided with a driving seat and a steering member, a traction member and a sliding member symmetrically arranged on both sides of the driving seat. The driving seat is connected to the driving member, one end of the steering member is hinged to both sides of the driving seat through a hinged rod, and the other end of the steering member is connected to the traction member through a hinged rod. The traction member and the sliding member are hingedly connected through a hinged rod, and the lower end of the sliding member is provided with a accommodating frame for accommodating the power connection assembly, and the middle of the accommodating frame forms an installation area.

[0011] In the present invention, the lower end of the mounting plate is provided with a first sliding seat that cooperates with the driving seat, the driving seat is provided with a first sliding protrusion that cooperates with the first sliding seat, and the middle of the first sliding seat is provided with a first sliding groove that cooperates with the first sliding protrusion.

[0012] In the present invention, the lower end of the mounting plate is provided with a second sliding seat that cooperates with the sliding member, the sliding member is provided with a second sliding protrusion that cooperates with the second sliding seat, the middle of the second sliding seat is provided with a second sliding groove that cooperates with the second sliding protrusion, and the first sliding seat and the second sliding seat are arranged vertically.

[0013] In the present invention, the driving member is provided with a driving rod, the driving rod is provided with a vertical plate, the lower end of the vertical plate is provided with a connecting rod arranged parallel to the driving rod, and the connecting rod is connected to one end of the driving seat.

[0014] In the present invention, the traction member comprises a connecting section and traction sections symmetrically arranged at both ends of the connecting section. One end of the traction section is connected to the rotating member, and the other end is connected to the sliding member.

[0015] In the present invention, the power connection assembly includes:

[0016] a first contact member, wherein the first contact member is provided with a first mounting block and a first contact rod which are symmetrically arranged;

[0017] a second contact member, the second contact member cooperates with the first contact member, the second contact member is provided with a second mounting block and a second contact rod which are symmetrically arranged, and the second contact member is arranged in the middle of the first contact member;

[0018] And a connecting bolt for connecting the first mounting block and the second mounting block, the connecting bolt is inserted from the second mounting block toward the first mounting block, and the connecting bolt is provided with an elastic member for keeping the first contact piece and the second contact piece reset.

[0019] In the present invention, a first thickening rod is provided in the middle of the first contact rod, a notch is provided on the first thickening rod to match the power terminal, and a first pressing plate is also provided on the first thickening rod.

[0020] In the present invention, a second thickened rod is provided in the middle of the second contact rod, a notch is provided on the second thickened rod to match the power terminal, and a second pressing plate is also provided on the second thickened rod.

[0021] In the present invention, the connecting bolt is composed of a limiting plate and a limiting rod assembly, the first mounting block is provided with a first mounting hole and a second mounting hole, the diameter of the first mounting hole is smaller than the diameter of the second mounting hole, the limiting rod is installed in cooperation with the first mounting hole, the second mounting block is provided with a third mounting hole, a fourth mounting hole and a fifth mounting hole, the fourth mounting hole is installed in cooperation with the limiting plate, the fifth mounting hole is installed in cooperation with the limiting rod, the diameters of the third mounting hole and the second mounting hole are equal, and the elastic member is arranged in the third mounting hole and the second mounting hole.

[0022] In the present invention, the elastic member is provided with a spiral section, one end of the spiral section is provided with a first fixed section, and the other end is provided with a second fixed section, the first fixed section is arranged in the middle of the first mounting block, and the second fixed section is arranged in the middle of the second mounting block.

[0023] The TOPCON perovskite tandem photovoltaic cell testing system implemented in the present invention has the following beneficial effects: It performs rapid, streamlined testing on pre-assembled photovoltaic cells, ensuring proper functioning of the cells during assembly and use. A driver moves the drive seat in the drive assembly, thereby changing the position of the slider, which drives the power connection assembly at the lower end of the slider toward the power terminals, achieving rapid electrical connection. This saves factory space, enables rapid testing after assembly, and improves testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the testing system for the TOPCON perovskite tandem photovoltaic cell of the present invention;

[0025] Figure 2 for Figure 1 Left view of;

[0026] Figure 3 This is a schematic diagram of the bottom structure of the mounting plate, drive member, drive assembly and power connection assembly structure in the present invention;

[0027] Figure 4 for Figure 3 Schematic diagram of the drive component and power connection component structure;

[0028] Figure 5 for Figure 4 Exploded diagram;

[0029] Figure 6 for Figure 5 A top view of part of the structure;

[0030] Figure 7 for Figure 5 Schematic diagram of the power connection component structure;

[0031] Figure 8 for Figure 7 Exploded diagram;

[0032] Figure 9 for Figure 8 A schematic structural diagram of the second contact member in FIG.

[0033] Figure 10 for Figure 8 A schematic structural diagram of the first contact member in FIG.

[0034] Figure 11 for Figure 8 Schematic diagram of the connecting bolt and elastic member structure;

[0035] Figure 12 This is a motion state analysis diagram of the drive component structure in the present invention;

[0036] Figure 13 for Figure 7 Top view of .

[0037] In the figure: photovoltaic cell 1, conveyor belt 2, mounting plate 3, drive assembly 4, power connection assembly 5, drive member 6, power connection terminal 7, guide slope 8, first thickened rod 9, second thickened rod 10, first contact member 11, second contact member 12, baffle 13, drive seat 14, steering member 15, traction member 16, sliding member 17, hinged rod 18, accommodating frame 19, mounting area 20, connecting section 21, traction section 22, rotating member 23, drive rod 24, vertical plate 25, connecting rod 26, first sliding seat 27, first sliding protrusion 28, first sliding Groove 29, second sliding seat 30, second sliding protrusion 31, second sliding groove 32, connecting bolt 33, clamping area 34, pressing area 35, first mounting block 36, first contact rod 37, second contact rod 38, second mounting block 39, recess 40, first pressing plate 41, second pressing plate 42, elastic member 43, limiting plate 44, limiting rod 45, first mounting hole 46, second mounting hole 47, third mounting hole 48, fourth mounting hole 49, fifth mounting hole 50, first fixing section 51, second fixing section 52, spiral section 53. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0039] like Figures 1 to 13As shown, the testing system for the TOPCON perovskite laminated photovoltaic cell of the present invention includes a photovoltaic cell 1, a conveyor belt 2, a mounting plate 3, a drive assembly 4, and a power connection assembly 5. The conveyor belt 2 is used to convey the photovoltaic cell 1 to be tested to a designated position, and then stops. The drive assembly 4 is driven by the drive member 6, so that the drive assembly 4 drives the power connection assembly 5 to move, and keeps the power connection assembly 5 in contact with the power terminal 7 to achieve electrical connection. The power connection assembly 5 is connected to the testing equipment through wires, and the current inside the photovoltaic cell 1 is measured by the testing equipment. The testing equipment can be set on the mounting plate 3. The testing equipment is not shown in the figure. The testing equipment can use existing equipment and will not be elaborated on here.

[0040] Photovoltaic cell 1 is provided with symmetrically arranged power terminals 7 on either side. These terminals are equipped with guiding slopes 8, which mate with first and second thickened rods 9, 10 in connection assembly 5. The guiding slopes 8 push first and second contacts 11, 12 apart, positioning power terminals 7 between them. These first and second contacts 11, 12 clamp the power terminals 7, achieving electrical connection. The power terminals 7 on either side of a photovoltaic cell 1 serve as the positive pole, with one terminal serving as the negative pole, allowing multiple photovoltaic cells 1 to be connected in series.

[0041] The conveyor belt 2 is used to transport the photovoltaic cells 1 . Baffles 13 are provided on both sides of the conveyor belt 2 , and the photovoltaic cells 1 are arranged between the baffles 13 .

[0042] The mounting plate 3 is arranged above the conveyor belt 2. A driving member 6 is provided at the upper end of the mounting plate 3. The driving member 6 is a cylinder. The lower end of the mounting plate 3 is provided with a driving component 4 that cooperates with the driving member 6. The driving member 6 pushes the driving component 4 to change its state under force, keeping the two sides of the driving component 4 close to the photovoltaic cell 1 in the middle.

[0043] The drive assembly 4 includes a drive base 14 and a steering member 15, a traction member 16, and a sliding member 17 symmetrically arranged on either side of the drive base 14. The drive base 14 is connected to the drive member 6. One end of the steering member 15 is hinged to either side of the drive base 14 via a hinged rod 18. The other end of the steering member 15 is connected to the traction member 16 via a hinged rod 18. The traction member 16 and the sliding member 17 are hingedly connected via a hinged rod 18. The lower end of the sliding member 17 is provided with a receiving frame 19 for accommodating the power supply assembly 5. The center of the receiving frame 19 forms a mounting area 20.

[0044] The traction member 16 consists of a connecting section 21 and traction sections 22 symmetrically arranged at both ends of the connecting section 21. One end of the traction section 22 is connected to the rotating member 23, and the other end is connected to the sliding member 17. Since the traction section 22 and the connecting section 21 are rigidly connected, they will not be deformed by force.

[0045] The driving member 6 is provided with a driving rod 24 , and the driving rod 24 is provided with a vertical plate 25 . The lower end of the vertical plate 25 is provided with a connecting rod 26 arranged parallel to the driving rod 24 , and the connecting rod 26 is connected to one end of the driving seat 14 .

[0046] A first sliding seat 27 cooperating with the driving seat 14 is provided at the lower end of the mounting plate 3 . A first sliding protrusion 28 cooperating with the first sliding seat 27 is provided on the driving seat 14 . A first sliding groove 29 cooperating with the first sliding protrusion 28 is provided in the middle of the first sliding seat 27 .

[0047] A second sliding seat 30 that cooperates with the sliding member 17 is provided at the lower end of the mounting plate 3, a second sliding protrusion 31 that cooperates with the second sliding seat 30 is provided on the sliding member 17, a second sliding groove 32 that cooperates with the second sliding protrusion 31 is provided in the middle of the second sliding seat 30, and the first sliding seat 27 and the second sliding seat 30 are arranged vertically.

[0048] Since the positions of the driving seat 14 and the plurality of sliding members 17 are restricted by the first sliding seat 27 and the second sliding seat 30, they can only slide along the positions where the first sliding seat 27 and the second sliding seat 30 are installed, and the first sliding seat 27 and the second sliding seat 30 are arranged in a vertical state. Figure 6 As shown, when the drive seat 14 is pushed by the driving member 6 in the direction of F2, the driving seat 14 drives the steering member 15 to move together, causing the angle of the steering member 15 hinged to the driving seat 14 to change as it moves, thereby causing the steering member 15, which was originally in a horizontal position, to change to an inclined position. At the same time, the steering member 15 pulls the traction member 16, which causes the traction member 16 to drive the sliding member 17 to slide on the second sliding seat 30, that is, to move in the direction of F1. Because the positions of the first sliding seat 27 and the second sliding seat 30 are fixed, the movement direction of the driving seat 14 and the sliding member 17 will not change, and they can only move in the direction set by the first sliding seat 27 and the second sliding seat 30. This facilitates the sliding member 17 to gradually move the power connection assembly 5, which is maintained in the center of the accommodating frame 19, closer to the power connection terminal 7. The power connection terminal 7 contacts the power connection assembly 5 to achieve electrical connection.

[0049] like Figure 12 As shown, when the driving seat 14 moves in the direction of F2, the steering member 15 is kept tilted, so that the traction member 16 is close to the driving seat 14. By reducing the distance between the traction member 16 and the driving seat 14, the sliding member 17 can be driven close to the driving seat 14.

[0050] The power connection assembly 5 is installed on the driving assembly 4, and the power connection assembly 5 is in contact with the power connection terminal 7. The power connection terminal 7 pushes the power connection assembly 5 to deform and clamp it on the power connection terminal 7 to achieve electrical connection.

[0051] The power connection assembly 5 includes a first contact 11, a second contact 12 and a connecting bolt 33. The connecting bolt 33 hinges the first contact 11 and the second contact 12 so that the angle between the first contact 11 and the second contact 12 can change, and the first contact 11 and the second contact 12 can be kept close to or away from each other.

[0052] A clamping area 34 and a pressing area 35 are formed between the first contact 11 and the second contact 12. The clamping area 34 is used to cooperate with the power terminal 7 to achieve electrical connection, while the pressing area 35 facilitates the first contact 11 and the second contact 12 to approach each other. The clamping area 34 is opened to increase the area of ​​the clamping area 34 and facilitate the insertion of the power terminal 7. The angle of the clamping area 34 is smaller than that of the pressing area 35.

[0053] The first contact member 11 is provided with a symmetrically arranged first mounting block 36 and a first contact rod 37. The first mounting block 36 is arranged above and below the first contact rod 37, and the first contact rod 37 and the second contact rod 38 are both arranged in a "C" shape, which is convenient for connection with the first mounting block 36 and also convenient for contact with the power terminal 7.

[0054] Second contact member 12 mates with first contact member 11. Second contact member 12 is provided with a symmetrically arranged second mounting block 39 and second contact rod 38. Second contact member 12 is positioned centrally with first contact member 11. The distance between first mounting block 36 is H1, while the distance between second mounting block 39 is H2, where H1 > H2. This facilitates installation of second mounting block 39 between first mounting block 36.

[0055] The first contact rod 37 and the second contact rod 38 are made of conductive material, as are the first thickened rod 9 and the second thickened rod 10. The wires connected to the detection device can be welded on the pressing plate to achieve electrical connection.

[0056] A first thickened rod 9 is provided in the middle of the first contact rod 37. The first thickened rod 9 has a notch 40 that mates with the power terminal 7. The first thickened rod 9 also has a first pressing plate 41. A second thickened rod 10 is provided in the middle of the second contact rod 38. The second thickened rod 10 has a notch 40 that mates with the power terminal 7. The second thickened rod 10 also has a second pressing plate 42.

[0057] The connecting bolt 33 is used to connect the first mounting block 36 and the second mounting block 39. The connecting bolt 33 is inserted from the second mounting block 39 toward the first mounting block 36. The connecting bolt 33 is provided with an elastic member 43 for maintaining the first contact member 11 and the second contact member 12 in their original position. The connecting bolt 33 is composed of a limiting plate 44 and a limiting rod 45. The first mounting block 36 is provided with a first mounting hole 46 and a second mounting hole 47. The diameter of the first mounting hole 46 is smaller than the diameter of the second mounting hole 47. The limiting rod 45 is mounted in conjunction with the first mounting hole 46. The second mounting block 39 is provided with a third mounting hole 48, a fourth mounting hole 49, and a fifth mounting hole 50. The fourth mounting hole 49 is mounted in conjunction with the limiting plate 44, and the fifth mounting hole 50 is mounted in conjunction with the limiting rod 45. The diameters of the third mounting hole 48 and the second mounting hole 47 are equal. The elastic member 43 is disposed within the third mounting hole 48 and the second mounting hole 47.

[0058] Fixing holes (not shown in the figure) that cooperate with the first fixing section 51 and the second fixing section 52 can be provided in the second mounting hole 47 and the third mounting hole 48 to limit the positions of the first fixing section 51 and the second fixing section 52 .

[0059] A spiral section 53 is provided on the elastic member 43, and the limiting rod 45 is arranged in the middle of the spiral section 53. A first fixing section 51 is provided at one end of the spiral section 53, and a second fixing section 52 is provided at the other end. The first fixing section 51 is provided in the middle of the first mounting block 36, and the second fixing section 52 is provided in the middle of the second mounting block 39.

[0060] The angle between the first mounting block 36 and the second mounting block 39 is limited by the elastic member 43, so that the angle between the clamping area 34 and the pressing area 35 can be maintained. When the power terminal 7 is inserted into the clamping area 34, the elastic member 43 is deformed by force, so that the angle of the clamping area 34 becomes larger and the angle of the pressing area 35 becomes smaller.

[0061] When the photovoltaic cell 1 to be inspected is conveyed to the lower end of the mounting plate 3 by the conveyor belt 2, the driving member 6 is started to push the driving seat 14, so that the driving seat 14 drives the steering member 15 to move, the steering member 15 pulls the traction member 16, and the traction member 16 pulls the sliding member 17 to move, so that the power connection component 5 in the accommodating frame 19 contacts the power connection terminal 7 to achieve electrical connection, and maintains connection with the detection equipment through the wires, thereby maintaining electrical connection between the photovoltaic cell 1 and the detection equipment, and conveniently and quickly implementing its detection.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A testing system for TOPCON perovskite tandem photovoltaic cells, characterized in that: include: A photovoltaic cell to be tested, wherein power terminals are symmetrically arranged on both sides of the photovoltaic cell; a conveyor belt for conveying the photovoltaic cell, wherein baffles are provided on both sides of the conveyor belt, and the photovoltaic cell is arranged between the baffles; A mounting plate is provided above the conveyor belt, with a driving member provided at the upper end of the mounting plate and a driving assembly cooperating with the driving member provided at the lower end of the mounting plate. The driving member pushes the driving assembly to change its state, keeping both sides of the driving assembly close to the photovoltaic cell in the middle. And an electrical connection component installed on the driving component, the electrical connection component is in contact with the electrical terminal, and the electrical terminal pushes the electrical connection component to deform and clamp it on the electrical terminal to achieve electrical connection; wherein, the driving component is provided with a driving seat and a steering member, a traction member and a sliding member symmetrically arranged on both sides of the driving seat, the driving seat is connected to the driving member, one end of the steering member is hinged to both sides of the driving seat through a hinged rod, the other end of the steering member is connected to the traction member through a hinged rod, the traction member and the sliding member are hingedly connected through a hinged rod, and the lower end of the sliding member is provided with a accommodating frame for accommodating the electrical connection component, and the middle of the accommodating frame forms an installation area.

2. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 1, characterized in that: The lower end of the mounting plate is provided with a first sliding seat that cooperates with the driving seat, the driving seat is provided with a first sliding protrusion that cooperates with the first sliding seat, and the middle of the first sliding seat is provided with a first sliding groove that cooperates with the first sliding protrusion.

3. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 2, characterized in that: The lower end of the mounting plate is provided with a second sliding seat that cooperates with the sliding member, the sliding member is provided with a second sliding protrusion that cooperates with the second sliding seat, the middle of the second sliding seat is provided with a second sliding groove that cooperates with the second sliding protrusion, and the first sliding seat and the second sliding seat are arranged vertically.

4. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 1, characterized in that: The driving member is provided with a driving rod, the driving rod is provided with a vertical plate, the lower end of the vertical plate is provided with a connecting rod arranged parallel to the driving rod, and the connecting rod is connected to one end of the driving seat.

5. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 1, characterized in that: The traction member consists of a connecting section and traction sections symmetrically arranged at both ends of the connecting section. One end of the traction section is connected to the rotating member, and the other end is connected to the sliding member.

6. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 1, characterized in that: The power connection assembly includes: a first contact member, wherein the first contact member is provided with a first mounting block and a first contact rod which are symmetrically arranged; A second contact member, the second contact member cooperates with the first contact member, the second contact member is provided with a symmetrically arranged second mounting block and a second contact rod, the second contact member is arranged in the middle of the first contact member; and a connecting bolt for connecting the first mounting block and the second mounting block, the connecting bolt is inserted from the second mounting block toward the first mounting block, and the connecting bolt is provided with an elastic member for keeping the first contact member and the second contact member in reset.

7. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 6, characterized in that: A first thickening rod is provided in the middle of the first contact rod. A notch that matches the power terminal is provided on the first thickening rod. A first pressing plate is also provided on the first thickening rod.

8. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 7, characterized in that: A second thickening rod is provided in the middle of the second contact rod. A notch that matches the power terminal is provided on the second thickening rod. A second pressing plate is also provided on the second thickening rod.

9. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 8, characterized in that: The connecting bolt consists of a limiting plate and a limiting rod assembly, the first mounting block is provided with a first mounting hole and a second mounting hole, the diameter of the first mounting hole is smaller than the diameter of the second mounting hole, the limiting rod is installed in cooperation with the first mounting hole, the second mounting block is provided with a third mounting hole, a fourth mounting hole and a fifth mounting hole, the fourth mounting hole is installed in cooperation with the limiting plate, the fifth mounting hole is installed in cooperation with the limiting rod, the diameters of the third mounting hole and the second mounting hole are equal, and the elastic member is arranged in the third mounting hole and the second mounting hole.

10. The TOPCON perovskite tandem photovoltaic cell testing system according to claim 9, characterized in that: The elastic member is provided with a spiral section, one end of the spiral section is provided with a first fixing section, and the other end is provided with a second fixing section, the first fixing section is arranged in the middle of the first mounting block, and the second fixing section is arranged in the middle of the second mounting block.

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