Photovoltaic bus bar assembly

Abstract

The utility model provides a photovoltaic bus bar assembly, and belongs to the technical field of photovoltaic assemblies. The problem that the welding precision of the bus bar assembly is poor is solved. The bus bar cutting device comprises a glass back face, a battery piece and a bus bar are arranged on the top of the glass back face, a welding strip is arranged on the surface of the battery piece, an adjusting mechanism is arranged on the surface of the glass back face and comprises an adjusting rod, the adjusting rod is welded to the surface of the glass back face, and the surface of the adjusting rod is movably sleeved with an extending section. Interconnecting strips are welded to the surfaces of the extending sections, positioning bolts penetrate through the tops of the interconnecting strips, connecting holes are formed in the surface of the back face of the glass, compression springs are fixedly connected to the surfaces of the extending sections, supporting plates are fixedly connected to the bottoms of the compression springs, and connecting rods penetrate through the surfaces of the supporting plates. The utility model has the advantages of convenient installation, easy welding and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic components, and in particular relates to a photovoltaic busbar component. Background Art

[0002] Solar energy, with its advantages of being clean, safe, and widely applicable, plays a crucial role in long-term energy strategies. Photovoltaic power generation utilizes the photovoltaic effect at the interface of semiconductors to directly convert sunlight into electricity. It is currently the mainstream technology for solar power generation. Photovoltaic modules are the core unit of solar power generation and are typically composed of encapsulated solar cells.

[0003] After searching, the authorization announcement number is CN212010998U, and the name is a utility model of a photovoltaic module busbar structure and a photovoltaic module, which includes a glass backplane, a busbar arranged on the glass backplane, and battery cells arranged on both sides of the busbar.

[0004] The above patent has the advantages of solar cells being less susceptible to damage and photovoltaic modules having high power generation efficiency. However, the busbar assembly is only operated directly on the workbench by workers based on their experience. It is not only difficult to ensure the accuracy of welding butt joints, but also difficult to weld flat when welding the ends of the components, affecting the assembly quality of the busbar, resulting in frequent desoldering, cold welding and crooked welding, increasing the difficulty of operation and low accuracy. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to provide a busbar assembly that is convenient for installing battery cells, effectively improves the assembly quality of the busbar, and has good usability.

[0006] The purpose of the utility model can be achieved through the following technical solutions: A photovoltaic busbar assembly, comprising a glass back, a battery cell and a busbar are arranged on the top of the glass back, a welding strip is arranged on the surface of the battery cell, an adjustment mechanism is arranged on the surface of the glass back, the adjustment mechanism includes an adjustment rod, the adjustment rod is welded to the surface of the glass back, an extension section is movably sleeved on the surface of the adjustment rod, an interconnection bar is welded on the surface of the extension section, a positioning bolt is provided through the top of the interconnection bar, a connecting hole is opened on the surface of the glass back, a compression spring is fixedly connected to the surface of the extension section, the bottom of the compression spring is fixedly connected to a support plate, and a connecting rod is provided through the surface of the support plate.

[0007] This photovoltaic busbar assembly mainly sets an adjustment mechanism between the welding ribbon and the back of the glass. The adjustment mechanism can adopt an adjustable welding structure, which can adjust the position of the welding point according to the specifications and characteristics of different welding ribbons, ensuring that the welding point is firm, the resistance is small, and the current transmission efficiency is high, thereby improving the versatility and flexibility of the assembly.

[0008] In the above-mentioned photovoltaic busbar assembly, the number of the connection holes is several, and the interconnecting bars are arranged at equal distances.

[0009] In the aforementioned photovoltaic busbar assembly, one end of the connecting rod is inserted into the inner cavity of the connecting hole, the connecting rod is movably connected to the inner wall of the extension section, and a handle is welded to the top of the connecting rod. In actual use, the side surface of the connecting rod and the inner wall surface of the connecting hole are in surface-to-surface contact.

[0010] In the aforementioned photovoltaic busbar assembly, the soldering ribbon is movably sleeved onto the surface of the interconnecting bar, and the bottom end of the positioning bolt sequentially penetrates the interconnecting bar and the soldering ribbon and is threadedly connected to the inner wall of the interconnecting bar. During actual manufacturing, the positioning bolt is provided when it is inserted into the interconnecting bar and the soldering ribbon. This provision is intended to guide the lateral movement of the interconnecting bar and the soldering ribbon, preventing them from deviating from their motion trajectory and maintaining structural stability.

[0011] In the aforementioned photovoltaic busbar assembly, a groove is formed on the busbar surface, and the welding ribbon extends into the groove on the side away from the interconnecting strip. The coordination of the extension, interconnecting strip, positioning pin, and groove ensures that the surface of the photovoltaic busbar is flush after the welding ribbon is welded. This not only reduces the overall resistance of the photovoltaic assembly but also avoids the risk of fragmentation caused by height discrepancies between the busbar and the welding ribbon after welding.

[0012] In the photovoltaic busbar assembly described above, the groove matches the welding strip, and the surfaces of the interconnection bar and the groove are provided with a copper base strip. This is to utilize the excellent electrical conductivity of the copper base strip to meet the requirements of use in high current environments.

[0013] Compared with the existing technology, the advantages of this photovoltaic busbar assembly are: good usability, the welding strip can be limited and guided on the battery cell, the adjustment is convenient, the structure is stable, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the busbar cutting device.

[0015] Figure 2 It is a schematic diagram of the partial cross-section of the three-dimensional structure of the busbar cutting device.

[0016] Figure 3 This busbar cutting device Figure 1 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0017] In the figure, 1. Back of glass; 2. Battery cell; 3. Bus bar; 4. Solder ribbon; 5. Adjustment mechanism; 6. Adjustment rod; 7. Extension section; 8. Interconnection strip; 9. Positioning bolt; 10. Connection hole; 11. Compression spring; 12. Support plate; 13. Connecting rod; 14. Handle; 15. Groove. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 、 Figure 2 and Figure 3 As shown, the photovoltaic busbar assembly includes a glass back 1, a cell 2 and a busbar 3 are provided on the top of the glass back 1, a welding strip 4 is provided on the surface of the cell 2, an adjustment mechanism 5 is provided on the surface of the glass back 1, and the adjustment mechanism 5 includes an adjustment rod 6, the adjustment rod 6 is welded to the surface of the glass back 1, an extension section 7 is movably sleeved on the surface of the adjustment rod 6, an interconnection bar 8 is welded on the surface of the extension section 7, a positioning bolt 9 is provided on the top of the interconnection bar 8, a connecting hole 10 is opened on the surface of the glass back 1, a compression spring 11 is fixedly connected to the surface of the extension section 7, a support plate 12 is fixedly connected to the bottom of the compression spring 11, and a connecting rod 13 is provided on the surface of the support plate 12.

[0020] During actual manufacturing, the specific implementation method of the adjustment mechanism 5 is: it is mainly composed of several connecting holes 10, and the interconnecting bars 8 are arranged at equal distances. By setting the interconnecting bars 8, a support point is provided for the welding strip 4, which facilitates the operation of the welding strip 4.

[0021] One end of the connecting rod 13 is inserted into the inner cavity of the connecting hole 10, and the connecting rod 13 is movably connected to the inner wall of the extension section 7. A handle 14 is welded to the top of the connecting rod 13. By setting the handle 14, it is convenient for people to pull the connecting rod 13, thereby increasing the friction between the user's hand and the connecting rod 13.

[0022] The welding strip 4 is movably sleeved on the surface of the interconnecting bar 8, and the bottom end of the positioning bolt 9 passes through the interconnecting bar 8 and the welding strip 4 in sequence and is threadedly connected to the inner wall of the interconnecting bar 8. By setting the positioning bolt 9, it is ensured that the supported object is stably supported, which can improve the completion quality of the overall structure of the interconnecting bar 8.

[0023] A groove 15 is defined on the surface of busbar 3. The soldering ribbon 4 extends into groove 15 on the side away from the interconnecting bar 8. This groove 15 stabilizes the connection between the soldering ribbon 4 and busbar 3, improving module efficiency. Groove 15 mates with the soldering ribbon 4. Copper base tape is applied to the surfaces of the interconnecting bar 8 and groove 15.

[0024] When in use, grip the handle 14 and pull the connecting rod 13 upward away from the connecting hole 10, driving the support plate 12 to move vertically and squeeze the compression spring 11 to contract, pushing the extension section 7 to slide along the surface of the adjustment rod 6 in a horizontal linear track, so that the interconnection strip 8 can be flexibly adjusted according to the actual length requirements, and the supporting stress point of the welding strip 4 can be changed. Loosen the handle 14, and one side of the support plate 12 rebounds under the action of the compression spring 11, moving the connecting rod 13 downward along the inner wall of the extension section 7 to fix it, and inserting one end of the connecting rod 13 into the corresponding connecting hole 10. The cavity is formed to ensure that the connection between the extension section 7 and the back of the glass 1 remains stable and safe. The reserved distance of the welding ribbon 4 required for conventional welding is replaced by the extension section 7 in this solution. There is no need to reserve more length of the welding ribbon 4 during the welding process. It can be cut from the middle of the battery cell spacing. The bus bar and the extension section 7 are reserved for connection, which reduces the loss of the welding ribbon 4. Moreover, the welding ribbon 4 is placed in the interconnection bar 8 during welding, so that the welding area is the entire outer circumferential surface of the interconnection bar 8, rather than a part of the outer surface of the traditional interconnection bar 8, which increases the welding area and improves the reliability of the connection.

[0025] Matters not described in detail in this specification constitute prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art to which the present invention relates may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A photovoltaic busbar assembly comprising a glass back surface (1), characterized in that: A cell (2) and a bus bar (3) are provided on the top of the glass back (1), a welding strip (4) is provided on the surface of the cell (2), an adjustment mechanism (5) is provided on the surface of the glass back (1), the adjustment mechanism (5) comprises an adjustment rod (6), the adjustment rod (6) is welded to the surface of the glass back (1), an extension section (7) is movably sleeved on the surface of the adjustment rod (6), an interconnection bar (8) is welded on the surface of the extension section (7), a positioning bolt (9) is provided through the top of the interconnection bar (8), a connection hole (10) is provided on the surface of the glass back (1), a compression spring (11) is fixedly connected to the surface of the extension section (7), a support plate (12) is fixedly connected to the bottom of the compression spring (11), and a connecting rod (13) is provided through the surface of the support plate (12).

2. A photovoltaic busbar assembly according to claim 1, characterized in that: The number of the connection holes (10) is several, and the interconnection bars (8) are arranged at equal distances.

3. The photovoltaic busbar assembly according to claim 1, characterized in that: One end of the connecting rod (13) is inserted into the inner cavity of the connecting hole (10), the connecting rod (13) is movably connected to the inner wall of the extension section (7), and a handle (14) is welded to the top of the connecting rod (13).

4. The photovoltaic busbar assembly according to claim 1, characterized in that: The welding strip (4) is movably sleeved on the surface of the interconnection bar (8), and the bottom end of the positioning bolt (9) sequentially passes through the interconnection bar (8) and the welding strip (4) and is threadedly connected to the inner wall of the interconnection bar (8).

5. The photovoltaic busbar assembly according to claim 1, characterized in that: A groove (15) is provided on the surface of the busbar (3), and the side of the welding strip (4) away from the interconnection bar (8) extends to the inside of the groove (15).

6. The photovoltaic busbar assembly according to claim 5, characterized in that: The groove (15) matches the welding strip (4), and the surfaces of the interconnection strip (8) and the groove (15) are provided with a copper base strip.

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