Stable photovoltaic module bypass protection element module

Abstract

The utility model provides a stable photovoltaic assembly bypass protection element module, which comprises a first conductive terminal, a second conductive terminal, a bypass protector and a connecting soldering lug, and is characterized in that one end of the first conductive terminal is provided with a first welding area; the end, facing the first welding area, of the second conductive terminal is provided with a second welding area, the second welding area is concaved inwards to form an inner groove allowing the first welding area to be placed therein, extending stop levers are formed on the two sides of the inner groove, and the extending stop levers are symmetrically arranged on the two sides of the first welding area and extend towards the first welding area. A C-shaped channel for accommodating a packaging material is formed among the extension stop lever, the inner groove and the first welding area; the bypass protector is welded on the first welding area; one end of the connecting soldering lug is welded on the bypass protector, and the other end is welded on the second welding area; the stable photovoltaic assembly bypass protection element module provided by the utility model overcomes the defect that the packaging effect of the existing bypass protection element module is limited.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic modules, in particular to a stable bypass protection element module for photovoltaic modules. Background Art

[0002] A solar photovoltaic module is a device that converts solar energy into electrical energy. During the production process of photovoltaic modules, the junction box plays an important role in the effective output of photovoltaic electrical energy. Its main functions are to output the current generated by the photovoltaic module and protect the solar photovoltaic module. The current generated by each solar panel is relatively small, and a photovoltaic junction box is required to electrically connect multiple solar panels together so that the currents generated by multiple solar panels can be converged and output to form a photovoltaic system with a certain power generation capacity.

[0003] The bypass protection element module is an important component in solar photovoltaic modules. For example, Patent No. CN112259517A discloses a bypass element solder tab, a bypass protection element module and a junction box for a photovoltaic module. The bypass protection element module includes a copper plate frame, a bypass protection device, a solder tab for welding the bypass protection device to the copper plate frame, and an insulating plastic encapsulation block for encapsulating the bypass protection device and the solder tab on the copper plate frame; the copper plate frame includes a first conductive terminal and a second conductive terminal separated from each other. In order to improve the encapsulation effect between the insulating plastic encapsulation block and the copper plate frame, the combination part of the side of the copper plate frame and the plastic encapsulation block is designed as a serrated structure. In the above structure, although the serrated structure can improve the encapsulation effect to a certain extent, the encapsulation effect is limited, the encapsulation is not firm, the stress surface during production is small, and there is a risk of fracture. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The problem to be solved by the utility model is to provide a stable bypass protection element module for photovoltaic modules to overcome the defect of limited encapsulation effect of the existing bypass protection element module.

[0006] (2) Technical Solutions

[0007] To solve the above technical problem, the utility model provides a stable bypass protection element module for photovoltaic modules, including:

[0008] A first conductive terminal, with a first welding area provided at one end;

[0009] The second conductive terminal is arranged at an interval from the first conductive terminal, and a second welding area is provided at one end facing the first welding area; an inner groove for placing the first welding area is concavely formed at the outer end of the second welding area, and extension stop bars are formed on both sides of the inner groove. The extension stop bars are symmetrically arranged on both sides of the first welding area and extend towards the first welding area. A C-shaped channel for accommodating encapsulation material is formed among the extension stop bars, the inner groove and the first welding area;

[0010] The bypass protector is welded on the first welding area;

[0011] The connecting solder tab has one end welded on the bypass protector and the other end welded on the second welding area.

[0012] In some embodiments, first tooth portions are symmetrically arranged at the inner end of the first welding area. The extension stop bars are opposite to the first tooth portions and are arranged at an interval from each other; first tooth grooves are formed inside the first tooth portions.

[0013] In some embodiments, second tooth grooves are symmetrically arranged at the inner end of the second welding area.

[0014] In some embodiments, the connecting solder tab includes a first welding end welded to the bypass protector and a second welding end welded to the second welding area. The first welding end and the second welding end are connected by an intermediate connecting portion. Both the first welding end and the second welding end are of flat plate structures, and the height of the first welding end is greater than that of the second welding end.

[0015] In some embodiments, a first bus bar slot hole and a first bus bar welding area are provided on the first conductive terminal. The first bus bar slot hole is arranged close to the first welding area; a second bus bar slot hole and a second bus bar welding area are provided on the second conductive terminal. The second bus bar slot hole is arranged close to the second welding area.

[0016] In some embodiments, a first positioning hole is provided on one side of the first conductive terminal, and a U-shaped positioning hole is provided on the other side. Both the first positioning hole and the U-shaped positioning hole are arranged far from the first welding area; second positioning holes are symmetrically arranged at one end of the second conductive terminal. The second positioning holes are arranged far from the second welding area.

[0017] In some embodiments, an insulating plastic encapsulation block is further included. The insulating plastic encapsulation block is used to encapsulate the bypass protector and the connecting solder tab between the first conductive terminal and the second conductive terminal.

[0018] In some embodiments, both the first conductive terminal and the second conductive terminal are copper plates, and the bypass protector is a diode chip.

[0019] (3) Beneficial effects

[0020] A stable bypass protection element module for a photovoltaic module provided by the present utility model is provided with an inner groove, and extension blocking bars extending towards the first welding area are formed on both sides of the inner groove. During plastic encapsulation, the first welding area can be placed into the inner groove, so that a C-shaped channel for accommodating the encapsulation material is formed between the extension blocking bars, the inner groove and the first welding area. The setting of the C-shaped channel is beneficial to increasing the plastic encapsulation contact area between the encapsulation material and the first welding area and the second welding area; combined with the first tooth part, the first tooth groove and the second tooth groove, the plastic encapsulation contact area is further increased, the production stress surface is large, the encapsulation structure is firm, the encapsulation effect is good, and breakage is prevented. Description of the drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Is a perspective view of a stable bypass protection element module for a photovoltaic module of the present utility model;

[0023] Figure 2 Is a structural schematic diagram of a stable bypass protection element module for a photovoltaic module of the present utility model;

[0024] Figure 3 Is an exploded view of a stable bypass protection element module for a photovoltaic module of the present utility model;

[0025] Figure 4 Is a perspective view of the connection between the second conductive terminal and the connection solder tab of a stable bypass protection element module for a photovoltaic module of the present utility model;

[0026] Figure 5 Is a perspective view of the connection between the first conductive terminal and the bypass protector of a stable bypass protection element module for a photovoltaic module of the present utility model;

[0027] The component names corresponding to the respective reference numerals in the figures are: 1. First conductive terminal; 101. First welding area; 102. First tooth part; 103. First tooth groove; 104. First bus bar slot hole; 105. First bus bar welding area; 106. First positioning hole; 107. U-shaped positioning hole; 2. Second conductive terminal; 201. Second welding area; 202. Inner groove; 203. Extension stop bar; 204. C-shaped channel; 205. Second tooth groove; 206. Second bus bar slot hole; 207. Second bus bar welding area; 208. Second positioning hole; 3. Bypass protector; 4. Connecting solder tab; 401. First welding end; 402. Second welding end; 403. Intermediate connecting part. Detailed implementation mode

[0028] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The following uses specific specific examples to illustrate the implementation modes of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0030] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. In addition, this device and / or this method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0031] It also needs to be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The diagrams only show the components related to the present application and are not drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in its actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0032] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0033] The following describes the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

[0034] Refer to Figures 1 to 5 , the present utility model provides a stable bypass protection element module for a photovoltaic module, including a first conductive terminal 1, a second conductive terminal 2, a bypass protector 3, and a connecting solder tab 4.

[0035] Refer to Figures 1 to 5 , one end of the first conductive terminal 1 is provided with a first welding area 101, and the thickness of the first welding area 101 is less than that of the first conductive terminal 1. The second conductive terminal 2 is arranged at an interval from the first conductive terminal 1, and one end of the second conductive terminal 2 facing the first welding area 101 is provided with a second welding area 201, and the thickness of the second welding area 201 is less than that of the second conductive terminal 2. An inner groove 202 for placing the first welding area 101 is formed by inward concavity at the outer end of the second welding area 201, and extension blocking bars 203 are formed on both sides of the inner groove 202. The extension blocking bars 203 are symmetrically arranged on both sides of the first welding area 101 and extend towards the first welding area 101. A C-shaped channel 204 for accommodating encapsulation material is formed among the extension blocking bars 203, the inner groove 202, and the first welding area 101. The bypass protector 3 is welded on the first welding area 101, one end of the connecting solder tab 4 is welded on the bypass protector 3, and the other end is welded on the second welding area 201. With this structure, the setting of the C-shaped channel is beneficial to increasing the plastic sealing contact area between the encapsulation material and the first welding area and the second welding area.

[0036] In some embodiments, as Figure 2 , Figure 4 and Figure 5 shown, first teeth 102 are symmetrically arranged at the inner end of the first welding area 101. The extension blocking bars 203 are opposite to the first teeth 102 and are arranged at an interval therebetween. First tooth grooves 103 are formed inside the first teeth 102; second tooth grooves 205 are symmetrically arranged at the inner end of the second welding area 201. With this structure, the C-shaped channel, in combination with the first teeth, the first tooth grooves, and the second tooth grooves, further increases the plastic sealing contact area, has a large production stress-bearing surface, a firm encapsulation structure, a good encapsulation effect, and prevents breakage.

[0037] In some embodiments, as Figure 1 and Figure 4As shown, the connecting solder tab 4 includes a first welding end 401 welded to the bypass protector 3 and a second welding end 402 welded to the second welding area 201. The first welding end 401 and the second welding end 402 are connected by an intermediate connecting portion 403. Both the first welding end 401 and the second welding end 402 are of flat plate structure, which can increase the welding area and make the welding more firm; and the height of the first welding end 401 is greater than that of the second welding end 402, which is convenient for welding the first welding end 401.

[0038] In some embodiments, as Figure 2 、 Figure 4 and Figure 5 shown, a first bus bar slot hole 104 and a first bus bar welding area 105 are provided on the first conductive terminal 1, and the first bus bar slot hole 104 is arranged close to the first welding area 101; a second bus bar slot hole 206 and a second bus bar welding area 207 are provided on the second conductive terminal 2, and the second bus bar slot hole 206 is arranged close to the second welding area 201.

[0039] In some embodiments, as Figure 2 、 Figure 4 and Figure 5 shown, a first positioning hole 106 is provided on one side of the first conductive terminal 1, and a U-shaped positioning hole 107 is provided on the other side. Both the first positioning hole 106 and the U-shaped positioning hole 107 are arranged away from the first welding area 101. The first positioning hole 106 and the U-shaped positioning hole 107 are used to position and install the first conductive terminal 1 into the external junction box body. Second positioning holes 208 are symmetrically provided at one end of the second conductive terminal 2. The second positioning holes 208 are arranged away from the second welding area 201. The second positioning holes 208 are used to position and install the second conductive terminal 2 into the external junction box body. The positioning structures of the first conductive terminal 1 and the second conductive terminal 2 are different, which prevents the first conductive terminal 1 and the second conductive terminal 2 from being installed reversely and is convenient for assembly.

[0040] In some embodiments, an insulating plastic sealing block (not shown in the figure) is further included. The insulating plastic sealing block is used to encapsulate the bypass protector 3 and the connecting solder tab 4 between the first conductive terminal 1 and the second conductive terminal 2. When processing the bypass protection element module, it is necessary to use an insulating material to integrally mold the bypass protector 3, the connecting solder tab 4, the first conductive terminal 1 and the second conductive terminal 2 by an injection molding process.

[0041] In some embodiments, both the first conductive terminal 1 and the second conductive terminal 2 are copper plates, and the bypass protector 3 is a diode chip.

[0042] For the same and similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0043] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A stable bypass protection element module for a photovoltaic module, characterized in that, Comprising: A first conductive terminal (1) with a first welding area (101) provided at one end; A second conductive terminal (2), arranged at an interval from the first conductive terminal (1), and a second welding area (201) is provided at one end facing the first welding area (101); an inner groove (202) for inserting the first welding area (101) is recessed in the outer end of the second welding area (201), extension stoppers (203) are formed on both sides of the inner groove (202), the extension stoppers (203) are symmetrically arranged on both sides of the first welding area (101) and extend towards the first welding area (101), and a C-shaped channel (204) for accommodating encapsulation material is formed between the extension stoppers (203), the inner groove (202) and the first welding area (101); A bypass protector (3), welded on the first welding area (101); A connecting solder tab (4), with one end welded on the bypass protector (3) and the other end welded on the second welding area (201).

2. The stable photovoltaic module bypass protection element module according to claim 1, characterized in that: First teeth (102) are symmetrically provided at the inner end of the first welding area (101), and the extension stoppers (203) are opposite to the first teeth (102) and are arranged at an interval therebetween.

3. The stable photovoltaic module bypass protection component module according to claim 2, characterized in that: A first tooth groove (103) is formed inside the first teeth (102).

4. The stable photovoltaic module bypass protection component module according to claim 1, characterized in that: Second tooth grooves (205) are symmetrically provided at the inner end of the second welding area (201).

5. The stable photovoltaic module bypass protection element module according to claim 1, characterized in that: The connecting solder tab (4) includes a first welding end (401) welded to the bypass protector (3) and a second welding end (402) welded to the second welding area (201), and the first welding end (401) and the second welding end (402) are connected by an intermediate connecting portion (403).

6. The stable photovoltaic module bypass protection element module according to claim 5, characterized in that: Both the first welding end (401) and the second welding end (402) are of a flat plate structure, and the height of the first welding end (401) is greater than that of the second welding end (402).

7. The stable photovoltaic module bypass protection element module according to claim 1, characterized in that: A first bus bar slot hole (104) and a first bus bar welding area (105) are provided on the first conductive terminal (1), and the first bus bar slot hole (104) is arranged close to the first welding area (101); a second bus bar slot hole (206) and a second bus bar welding area (207) are provided on the second conductive terminal (2), and the second bus bar slot hole (206) is arranged close to the second welding area (201).

8. The stable photovoltaic module bypass protection element module according to claim 1, characterized in that: A first positioning hole (106) is provided on one side of the first conductive terminal (1), and a U-shaped positioning hole (107) is provided on the other side, and both the first positioning hole (106) and the U-shaped positioning hole (107) are arranged away from the first welding area (101); second positioning holes (208) are symmetrically provided at one end of the second conductive terminal (2), and the second positioning holes (208) are arranged away from the second welding area (201).

9. The stable photovoltaic module bypass protection component module as claimed in claim 1, wherein: An insulating plastic sealing block is further included, and the insulating plastic sealing block is used to encapsulate the bypass protector (3) and the connecting solder tab (4) between the first conductive terminal (1) and the second conductive terminal (2).

10. The stable photovoltaic module bypass protection element module according to claim 1, characterized in that: The first conductive terminal (1) and the second conductive terminal (2) are both copper plates, and the bypass protector (3) is a diode chip.

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