Back contact type solar cell

Abstract

The utility model relates to the technical field of back contact type solar cells, and discloses a back contact type solar cell, which comprises a cell main body, fixing frames are fixed on two sides of the outer side wall of the cell main body, and a connecting cross rod is fixed between the two groups of fixing frames. Clamping blocks are fixed to the upper end and the lower end of the fixing frame on the right side of the battery piece body, fixing blocks are fixed to the upper end and the lower end of the fixing frame on the left side of the battery piece body, and connecting clamping rings are hinged to the interiors of the fixing blocks. According to the utility model, components such as the clamping block, the fixing block and the connecting clamping ring are arranged, and the clamping block and the connecting clamping ring form a clamping structure; and the plurality of battery piece main bodies can be quickly spliced together to form a whole for use through the clamping structures between the clamping blocks and the connecting clamping rings, so that the battery piece main bodies are convenient to splice, and the use effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of back-contact solar cells, and specifically relates to a back-contact solar cell. Background Technique

[0002] A solar cell is an electronic device that converts solar energy into electrical energy. After the external sunlight shines on the solar cell, the photodiodes in the solar cell will convert the solar light energy into electrical energy and generate current. It is a new type of environmental protection power source, and the back-contact solar cell is a special type of solar cell among solar cells. Compared with ordinary solar cells, it can achieve higher photoelectric conversion efficiency and lower manufacturing cost.

[0003] For traditional back-contact solar cells, during use, it is not convenient to piece together multiple solar cells to form a whole for use, and the use is not convenient enough. Therefore, we propose a back-contact solar cell to improve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a back-contact solar cell to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A back-contact solar cell includes a main battery piece. On both sides of the outer side wall of the main battery piece, fixed frames are fixed, and a connecting cross bar is fixed between the two groups of fixed frames. At the upper and lower ends of the fixed frame on the right side of the main battery piece, clamping blocks are fixed. At the upper and lower ends of the fixed frame on the left side of the main battery piece, fixing blocks are fixed, and connecting snap rings are hingedly installed inside the fixing blocks.

[0006] Preferably, the cross-section of the connecting snap ring is larger than that of the clamping block, and a clamping structure is formed between the connecting snap ring and the clamping block.

[0007] Preferably, four groups of clamping blocks and connecting snap rings are provided, and the four groups of clamping blocks and connecting snap rings are symmetrically distributed about the central axis of the main battery piece.

[0008] Preferably, a moving seat is movably arranged on the outer side wall of the connecting cross bar. At the bottom end inside the moving seat, a first threaded rod is movably arranged, and a positioning block is fixed at the top end of the first threaded rod. An installation seat is arranged on the left side of the moving seat. At the bottom end inside the installation seat, a second threaded rod is movably arranged, and a clamping block is fixed at the top end of the second threaded rod. A sliding block is fixed at the rear end of the clamping block, and a sliding groove is arranged outside the sliding block, and the sliding groove is arranged on the left side inside the connecting cross bar.

[0009] Preferably, the cross-section of the sliding block is smaller than that of the sliding groove, and a sliding structure is formed between the sliding block and the sliding groove.

[0010] Preferably, the cross-section of the moving seat is larger than that of the connecting cross bar, and the moving seat and the connecting cross bar are adapted to each other.

[0011] Preferably, first reinforcing bars are welded and fixed to both the upper and lower ends of the rear end of the fixed frame, and second reinforcing bars are welded and fixed to one ends of the first reinforcing bars, and both ends of the second reinforcing bars are welded and fixed to the fixed frame.

[0012] Preferably, there are two groups of the first reinforcing bars and the second reinforcing bars, and the two groups of the first reinforcing bars and the second reinforcing bars are cross-distributed at the rear end of the fixed frame.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The back-contact solar cell not only facilitates the splicing of multiple cell body pieces together to form a whole, realizes the convenient installation of the cell body on the bracket, and is more convenient to use, but also realizes the strengthening of the cell structure;

[0014] (1) By providing components such as a clamping block, a fixing block, and a connecting clamping ring, a clamping structure is formed between the clamping block and the connecting clamping ring. When using multiple cell bodies, the clamping structure between the clamping block and the connecting clamping ring can quickly splice the multiple cell bodies together to form a whole for use, realizing the convenient assembly of the cell bodies and better use effect;

[0015] (2) By providing components such as a moving seat, a clamping block, a mounting seat, and a second threaded rod, during the installation process of the cell body, the distance between the moving seats can be adjusted according to actual needs to make the installation of the cell body more stable. At the same time, with the mutual cooperation of the above-mentioned other components, the cell body can be conveniently and quickly installed on the corresponding bracket for use, making the installation and use of the cell body more convenient;

[0016] (3) By providing components such as a first reinforcing bar and a second reinforcing bar, after adding a fixed frame to both sides of the cell body when the cell body is in use, first reinforcing bars and second reinforcing bars distributed crosswise are added to both the upper and lower ends of the rear end of the fixed frame, and the first reinforcing bars and the second reinforcing bars support and reinforce the cell body, making the structure of the cell body stronger and not easily deformed or damaged during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0018] Figure 2It is a schematic diagram of the partial cross-sectional structure of the side view of the present utility model;

[0019] Figure 3 It is a schematic diagram of the rear view structure of the connecting cross bar of the present utility model;

[0020] Figure 4 It is of the present utility model Figure 1 The enlarged schematic diagram of the sectional structure at position A in it.

[0021] In the figure: 1. Main body of battery cell; 2. Fixed frame; 3. Clamping block; 4. Fixed block; 5. Connecting snap ring; 6. Connecting cross bar; 7. Moving seat; 8. First threaded rod; 9. Clamping block; 10. Mounting seat; 11. First reinforcing strip; 12. Second reinforcing strip; 13. Positioning block; 14. Second threaded rod; 15. Sliding block; 16. Sliding groove. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1: Please refer to Figures 1-4 , a back-contact solar cell includes a main body 1 of the battery cell. Fixed frames 2 are fixed on both sides of the outer side wall of the main body 1 of the battery cell, and a connecting cross bar 6 is fixed between the two groups of fixed frames 2. Clamping blocks 3 are fixed at the upper and lower ends of the fixed frame 2 on the right side of the main body 1 of the battery cell, and fixed blocks 4 are fixed at the upper and lower ends of the fixed frame 2 on the left side of the main body 1 of the battery cell. Connecting snap rings 5 are hingedly installed inside the fixed blocks 4. The cross-section of the connecting snap ring 5 is larger than that of the clamping block 3. A clamping structure is formed between the connecting snap ring 5 and the clamping block 3, which is convenient for assembly and disassembly. Four groups of clamping blocks 3 and connecting snap rings 5 are provided, and the four groups of clamping blocks 3 and connecting snap rings 5 are symmetrically distributed about the central axis of the main body 1 of the battery cell, making the connection between different main bodies 1 of the battery cell more firm;

[0024] Specifically, as shown in Figure 1 and Figure 4 , when splicing the main body 1 of the battery cell, after taking two groups of main bodies 1 of the battery cell and placing them side by side, then turn the connecting snap ring 5 on the left side of the first group of main bodies 1 of the battery cell so that it is sleeved on the outer side wall of the clamping block 3 on the right side of the second group of main bodies 1 of the battery cell. After turning it well, turn the two groups of main bodies 1 of the battery cell to the back and also let the connecting snap ring 5 and the clamping block 3 be clamped together according to the above operation, so that the two groups of main bodies 1 of the battery cell can be spliced together to form a whole.

[0025] Embodiment 2: A movable seat 7 is movably arranged on the outer side wall of the connecting cross bar 6. At the bottom end inside the movable seat 7, a first threaded rod 8 is movably arranged. The top end of the first threaded rod 8 is fixed with a positioning block 13. On the left side of the movable seat 7, there is an installation seat 10. At the bottom end inside the installation seat 10, a second threaded rod 14 is movably arranged. The top end of the second threaded rod 14 is fixed with a clamping block 9. At the rear end of the clamping block 9, a sliding block 15 is fixed. Outside the sliding block 15, there is a sliding groove 16, and the sliding groove 16 is arranged on the left side inside the connecting cross bar 6. The cross section of the sliding block 15 is smaller than that of the sliding groove 16. A sliding structure is formed between the sliding block 15 and the sliding groove 16. The design of the sliding structure pushes the clamping block 9 to move stably and fit tightly on the outer side wall of the bracket. The cross section of the movable seat 7 is larger than that of the connecting cross bar 6. The movable seat 7 and the connecting cross bar 6 are matched with each other, which is convenient for stably pushing the movable seat 7 to move left and right;

[0026] Specifically, as Figure 2 and Figure 3 shown, when installing the battery cell body 1, rotate the second threaded rod 14 to pull the clamping block 9 downward by the sliding of the sliding block 15 inside the sliding groove 16 to open the inside of the installation seat 10. Then, the bracket to be installed is clamped into the inside of the installation seat 10, and rotate the second threaded rod 14 in the reverse direction to push the installation seat 10 to fit against the outer side wall of the bracket to lock the bracket. Thus, the battery cell body 1 can be installed on the corresponding bracket. At the same time, the distance between the movable seats 7 can also be adjusted according to actual needs by rotating the first threaded rod 8 to drive the positioning block 13 to move to unlock the movable seats 7 and then adjusting the movable seats 7.

[0027] Embodiment 3: At the upper and lower ends of the rear end of the fixed frame 2, first reinforcing bars 11 are welded and fixed. One end of each first reinforcing bar 11 is welded and fixed with a second reinforcing bar 12, and both ends of the second reinforcing bar 12 are welded and fixed with the fixed frame 2. There are two groups of the first reinforcing bars 11 and the second reinforcing bars 12, and the two groups of the first reinforcing bars 11 and the second reinforcing bars 12 are cross - distributed at the rear end of the fixed frame 2, which has a better effect on improving the structural strength of the battery cell body 1;

[0028] Specifically, as Figure 3 shown, the first reinforcing bars 11 and the second reinforcing bars 12 are cross - distributed and welded and fixed at the upper and lower ends of the fixed frame 2 on the back of the battery cell body 1 to support the structure of the battery cell body 1 and make it not easy to deform.

[0029] Working principle: When the utility model is in use, after taking the battery cell body 1, multiple battery cell bodies 1 can be first spliced together to form a whole for use. During splicing, multiple battery cell bodies 1 are placed side by side, and then the connecting snap ring 5 on the left side of the first group of battery cell bodies 1 is flipped to be sleeved on the outer side wall of the clamping block 3 on the right side of the second group of battery cell bodies 1. Then, the connecting snap ring 5 on the left side of the second group is flipped to be sleeved on the outer side wall of the clamping block 3 on the right side of the third group of battery cell bodies 1. After the front side is assembled, the battery cell body 1 is flipped, and according to the above operation, the connecting snap ring 5 and the clamping block 3 are engaged together, so that multiple battery cell bodies 1 can be spliced together to form a whole. Then, the second threaded rod 14 is rotated to pull the clamping block 9 downward through the sliding of the sliding block 15 inside the sliding groove 16 to open the inside of the mounting seat 10. Then, the bracket to be installed is engaged into the inside of the mounting seat 10, and the second threaded rod 14 is rotated in the reverse direction to push the mounting seat 10 to fit against the outer side wall of the bracket to lock the bracket, and the battery cell body 1 is installed on the corresponding bracket. Then, it receives the sunlight and converts it into electric energy.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A back-contact solar cell, comprising a cell body (1), characterized in that: Fixed frames (2) are fixed on both sides of the outer wall of the battery cell body (1), and a connecting cross bar (6) is fixed between the two groups of fixed frames (2). Blocks (3) are fixed on the upper and lower ends of the right fixed frame (2) of the battery cell body (1), and fixed blocks (4) are fixed on the upper and lower ends of the left fixed frame (2) of the battery cell body (1), and connecting clamp rings (5) are hingedly installed inside the fixed blocks (4).

2. A back-contact solar cell according to claim 1, characterized in that: The cross section of the connecting clamp ring (5) is larger than the cross section of the clamp block (3), and a clamping structure is formed between the connecting clamp ring (5) and the clamp block (3).

3. The back-contact solar cell according to claim 1, characterized in that: Four groups of the clamping blocks (3) and the connecting clamping rings (5) are provided, and the four groups of the clamping blocks (3) and the connecting clamping rings (5) are symmetrically distributed about the central axis of the battery cell body (1).

4. The back-contact solar cell according to claim 1, characterized in that: A movable seat (7) is movably provided on the outer side wall of the connecting cross bar (6), a first threaded rod (8) is movably provided at the bottom end inside the movable seat (7), and a positioning block (13) is fixed at the top end of the first threaded rod (8), a mounting seat (10) is provided on the left side of the movable seat (7), a second threaded rod (14) is movably provided at the bottom end inside the mounting seat (10), a clamping block (9) is fixed at the top end of the second threaded rod (14), a sliding block (15) is fixed at the rear end of the clamping block (9), a sliding groove (16) is provided on the outside of the sliding block (15), and the sliding groove (16) is provided on the left side inside the connecting cross bar (6).

5. A back-contact solar cell according to claim 4, characterized in that: The cross section of the sliding block (15) is smaller than the cross section of the sliding groove (16), and a sliding structure is formed between the sliding block (15) and the sliding groove (16).

6. The back-contact solar cell according to claim 4, characterized in that: The cross section of the movable seat (7) is larger than the cross section of the connecting cross bar (6), and the movable seat (7) and the connecting cross bar (6) are matched with each other.

7. The back-contact solar cell according to claim 1, characterized in that: The upper and lower ends of the rear end of the fixed frame (2) are both welded and fixed with a first reinforcement strip (11), and one end of the first reinforcement strip (11) is both welded and fixed with a second reinforcement strip (12), and both ends of the second reinforcement strip (12) are welded and fixed to the fixed frame (2).

8. The back-contact solar cell according to claim 7, characterized in that: Two groups of the first reinforcement strips (11) and the second reinforcement strips (12) are provided, and the two groups of the first reinforcement strips (11) and the second reinforcement strips (12) are cross-distributed at the rear end of the fixing frame (2).

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