Tin bar special for photovoltaic welding strip

Abstract

The utility model provides a photovoltaic solder strip specialized tin bar, including tin bar body, fixed connection block, clamping section, hexagon nut, threaded connection head and identification groove, fixed groove is opened in the lower end face of fixed connection block, the tin bar body upper end is fixed in the fixed groove, the clamping section is arranged in the middle of the upper end face of fixed connection block, and the hexagon nut is fixed in the fixed groove. The tin bar comprises a tin bar body, a clamping section is arranged on the tin bar body, a threaded connector is arranged on the upper side of the clamping section and provided with a hexagon nut matched with the threaded connector, an identification groove is formed in the middle of the front end face of the clamping section, and the tin bar body is sequentially provided with a first tin-lead layer, an inner soldering-aid layer, a second tin-lead layer, an outer soldering-aid layer, a third tin-lead layer and an anti-oxidation layer from inside to outside. Compared with the prior art, the tin bar has the advantages of being reasonable in design, convenient to use and capable of solving the problems that the surface of the tin bar is prone to oxidation and has no mark.

Description

Technical Field

[0001] The utility model is a tin bar special for photovoltaic welding strips, belonging to the technical field of tin bars. Background Art

[0002] Photovoltaic welding strips are also called tinned copper strips or tin-coated copper strips. They are divided into busbars and interconnecting strips. They are used to connect the cells of photovoltaic modules and play an important role in conducting electricity. The welding strips must be firmly welded in the process of connecting the cells in series to avoid the occurrence of false welding. Tin bars are a kind of solder products. Tin bars are important industrial raw materials for connecting electronic components in welding lines. They are widely used in the electronics industry, home appliance manufacturing, automobile manufacturing, maintenance industry and daily life, and are often used in the form of welding strips or welding wires.

[0003] The existing solder bars are made by mixing flux and tin together and pressing them. The outer surface is directly exposed to the air and is easily oxidized, causing short circuits between solder joints and affecting the welding quality. At the same time, the surface of the existing solder bars often has no markings, and sometimes different types of solder bars are taken and used incorrectly. In order to avoid the phenomenon of taking and using incorrectly, there are also solder bars with printed marks on the surface of the solder bars. However, during transportation and use, not only are the printed marks on the surface easy to wear off, but also because the surface of the solder bar is small, printing is not convenient enough. Therefore, the utility model provides a special tin bar for photovoltaic welding strips, which has a reasonable design and is easy to use, and solves the problem of easy oxidation and no marks on the surface of the tin bar. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a tin bar specially used for photovoltaic welding strips, which solves the problems raised in the above-mentioned background technology by adding a tin bar body, a fixed connection block, a clamping section, a hexagonal nut, a threaded connection head and an identification groove.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a tin bar specially used for photovoltaic welding strip, comprising a tin bar body, a fixed connection block, a clamping section, a hexagonal nut, a threaded connector and an identification groove, wherein a fixed groove is provided on the lower end face of the fixed connection block, and the upper end head of the tin bar body is fixed inside the fixed groove, a clamping section is provided in the middle of the upper end face of the fixed connection block, a threaded connector is provided on the upper side of the clamping section, and the threaded connector is equipped with a hexagonal nut matching it, an identification groove is provided in the middle of the front end face of the clamping section, and the tin bar body is provided with a first tin-lead layer, an inner soldering layer, a second tin-lead layer, an outer soldering layer, a third tin-lead layer and an anti-oxidation layer in sequence from the inside to the outside.

[0006] Furthermore, the cross section of the clamping section is square, and the lower end surface of the clamping section and the upper end surface of the fixed connection block are fixed by welding.

[0007] Furthermore, the lower end surface of the threaded connector and the upper end surface of the clamping section are fixed by welding.

[0008] Furthermore, the inner end surface of the anti-oxidation layer and the outer end surface of the third tin-lead layer are bonded and fixed.

[0009] Furthermore, the inner end surface of the third tin-lead layer and the outer end surface of the outer solder layer are bonded and fixed, and the inner end surface of the outer solder layer and the outer end surface of the second tin-lead layer are bonded and fixed.

[0010] Furthermore, the inner end surface of the second tin-lead layer and the outer end surface of the inner soldering layer are bonded and fixed, and the inner end surface of the inner soldering layer and the outer end surface of the first tin-lead layer are bonded and fixed.

[0011] Beneficial effects of the utility model: the utility model is a special tin bar for photovoltaic welding strip, which has a reasonable design and is easy to use by adding an identification groove and an anti-oxidation layer, and solves the problem of easy oxidation and no identification on the surface of the tin bar. When used in practice, it is more suitable for application in the field of tin bar application technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a front view structural diagram of a tin bar dedicated to photovoltaic welding strips of the utility model;

[0014] Figure 2 It is a top view schematic diagram of a tin bar for photovoltaic welding strip of the utility model with the hexagonal nut removed;

[0015] Figure 3 It is a top view cross-sectional schematic diagram of a tin bar specially used for photovoltaic welding ribbon of the utility model;

[0016] In the figure: 1-tin bar body, 2-fixed connection block, 3-clamping section, 4-hexagonal nut, 5-threaded connector, 6-marking groove, 11-first tin-lead layer, 12-inner solder layer, 13-second tin-lead layer, 14-outer solder layer, 15-third tin-lead layer, 16-anti-oxidation layer. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] See also Figure 1-Figure 3The utility model provides a technical solution: a tin bar for photovoltaic welding strip, comprising a tin bar body 1, a fixed connection block 2, a clamping section 3, a hexagonal nut 4, a threaded connector 5 and an identification groove 6, the fixed connection block 2 has a fixed groove on its lower end surface, the upper end of the tin bar body 1 is fixed inside the fixed groove, a clamping section 3 is arranged in the middle of the upper end surface of the fixed connection block 2, a threaded connector 5 is arranged on the upper side of the clamping section 3, the threaded connector 5 is equipped with a hexagonal nut 4 matching therewith, an identification groove 6 is arranged in the middle of the front end surface of the clamping section 3, and the tin bar body 1 is provided with a first tin-lead layer 11, an inner soldering layer 12, a second tin-lead layer 13, an outer soldering layer 14, a third tin-lead layer 15 and an anti-oxidation layer in sequence from the inside to the outside.

[0019] The cross-section of the clamping section 3 is square, the lower end face of the clamping section 3 and the upper end face of the fixed connecting block 2 are fixed by welding, the lower end face of the threaded connector 5 and the upper end face of the clamping section 3 are fixed by welding, the inner end face of the anti-oxidation layer and the outer end face of the third tin-lead layer 15 are bonded and fixed, the inner end face of the third tin-lead layer 15 and the outer end face of the outer solder layer 14 are bonded and fixed, the inner end face of the outer solder layer 14 and the outer end face of the second tin-lead layer 13 are bonded and fixed, the inner end face of the second tin-lead layer 13 and the outer end face of the inner solder layer 12 are bonded and fixed, and the inner end face of the inner solder layer 12 and the outer end face of the first tin-lead layer 11 are bonded and fixed.

[0020] As an embodiment of the present invention: the cross-section of the clamping section 3 is square, which can be easily clamped to avoid slipping. The identification groove 6 can be marked inside to avoid the phenomenon of taking it wrong or using it wrongly. The threaded connector 5 and the hexagonal nut 4 are used together to play an auxiliary clamping role. The tin bar body 1 is provided with a first tin-lead layer 11, an inner soldering layer 12, a second tin-lead layer 13, an outer soldering layer 14, a third tin-lead layer 15 and an anti-oxidation layer from the inside to the outside. The anti-oxidation layer 16 can prevent the third tin-lead layer 15 from being oxidized by the air. The multi-layer tin-lead layer and the inner and outer double-layer soldering layers can speed up the welding speed and improve the welding quality. The present invention has a reasonable design and is easy to use, and solves the problem of easy oxidation and no identification on the surface of the tin bar.

[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tin bar for photovoltaic welding strip, comprising a tin bar body, a fixed connection block, a clamping section, a hexagonal nut, a threaded connection head and a marking groove, characterized in that: A fixing groove is provided on the lower end surface of the fixed connection block, the upper end of the tin bar body is fixed inside the fixing groove, a clamping section is provided in the middle of the upper end surface of the fixed connection block, a threaded connector is provided on the upper side of the clamping section, the threaded connector is equipped with a hexagonal nut matching it, an identification groove is provided in the middle of the front end surface of the clamping section, and the tin bar body is provided with a first tin-lead layer, an inner soldering layer, a second tin-lead layer, an outer soldering layer, a third tin-lead layer and an anti-oxidation layer in sequence from the inside to the outside.

2. A tin bar for photovoltaic welding ribbon according to claim 1, characterized in that: The cross section of the clamping section is square, and the lower end surface of the clamping section and the upper end surface of the fixed connection block are fixed by welding.

3. The tin bar for photovoltaic welding ribbon according to claim 1, characterized in that: The lower end surface of the threaded connector and the upper end surface of the clamping section are fixed by welding.

4. The tin bar for photovoltaic welding ribbon according to claim 1, characterized in that: The inner end surface of the anti-oxidation layer and the outer end surface of the third tin-lead layer are bonded and fixed.

5. The tin bar for photovoltaic welding ribbon according to claim 1, characterized in that: The inner end surface of the third tin-lead layer is bonded and fixed to the outer end surface of the outer solder layer, and the inner end surface of the outer solder layer is bonded and fixed to the outer end surface of the second tin-lead layer.

6. The tin bar for photovoltaic welding ribbon according to claim 1, characterized in that: The inner end surface of the second tin-lead layer is bonded and fixed to the outer end surface of the inner soldering layer, and the inner end surface of the inner soldering layer is bonded and fixed to the outer end surface of the first tin-lead layer.

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