Photovoltaic junction box and photovoltaic module

Abstract

The utility model relates to the field of photovoltaic technology, in particular to a photovoltaic junction box and a photovoltaic assembly. The photovoltaic junction box comprises a diode, a first conductive terminal and a second conductive terminal. A first pin and a second pin respectively extend from two opposite ends of the diode. An accommodating space for accommodating a diode is formed between the first conductive terminal and the second conductive terminal; a plurality of first convex ribs are convexly arranged on the first conductive terminal, a plurality of second convex ribs are convexly arranged on the second conductive terminal, the plurality of first convex ribs and the plurality of second convex ribs are arranged along a first direction and extend along a second direction, and the first direction is vertical to the second direction; the first pin is connected with the plurality of first convex ribs in a welded mode, and the second pin is connected with the plurality of second convex ribs in a welded mode. According to the photovoltaic junction box, scaling powder does not need to be used in the welding process of the diode, the first conductive terminal and the second conductive terminal, the phenomenon that the first conductive terminal and the second conductive terminal are corroded to generate verdigris is avoided, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field especially relates to a kind of photovoltaic junction box and photovoltaic module. BACKGROUND

[0002] As the core component for realizing energy conversion, photovoltaic junction box undertakes the key function of battery array electric energy collection and transmission. The voltage generated by solar cell group needs to be accumulated after passing through photovoltaic junction box, and then direct current is converted into alternating current by inverter, and then it is merged into power grid. The structure of photovoltaic junction box generally includes box body, diode and terminal sheet, the box body is provided with a plurality of conductive sheets, each of which is connected to solar cell group through bus bar, each adjacent conductive sheet is connected by diode, and the conductive sheets at both ends are connected to the outside by cable.

[0003] The diode in photovoltaic junction box undertakes the role of one-way current conduction, and is the most easily heated part in the whole component. Usually, the diode is welded on the terminal sheet. In order to improve the stability of welding, a certain flux is usually added in the prior art, but the flux is corrosive, which can cause the phenomenon of copper green on the terminal sheet, and manual cleaning is required, which increases the labor cost. In addition, the flux also has the characteristics of flammability, which can easily damage the diode during welding and increase the safety hazard.

[0004] Therefore, it is urgent to design a photovoltaic junction box and photovoltaic module to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The first purpose of the utility model is to provide a photovoltaic junction box, which does not need to use flux during welding of diode and first and second conductive terminals, avoids corrosion of first and second conductive terminals and generation of copper green phenomenon, and reduces safety hazard.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a photovoltaic junction box, which comprises:

[0008] A diode, the opposite ends of the diode respectively extend out first and second pins;

[0009] A first conductive terminal and a second conductive terminal form a receiving space for receiving the diode between the first conductive terminal and the second conductive terminal; a plurality of first protruding ribs are protruded on the first conductive terminal, a plurality of second protruding ribs are protruded on the second conductive terminal, and the plurality of first protruding ribs and the plurality of second protruding ribs are arranged along a first direction and extend along a second direction, and the first direction and the second direction are perpendicular; the first pin is welded to the plurality of first protruding ribs, and the second pin is welded to the plurality of second protruding ribs.

[0010] As an optional technical solution of the photovoltaic junction box, a first receiving area is formed between two adjacent first protruding ribs, and a second receiving area is formed between two adjacent second protruding ribs, and the first receiving area and the second receiving area are configured to receive molten solder.

[0011] As an optional technical solution of the photovoltaic junction box, two first side edges extend along a third direction on the first conductive terminal, and the two first side edges are oppositely arranged along the first direction; two second side edges extend along the third direction on the second conductive terminal, and the two second side edges are oppositely arranged along the first direction, and the third direction is perpendicular to the first direction and the second direction.

[0012] The first pin is arranged between the two first side edges, and first gaps are arranged between the two sides of the first pin and the two first side edges;

[0013] The second pin is arranged between the two second side edges, and second gaps are arranged between the two sides of the second pin and the two second side edges.

[0014] As an optional technical solution of the photovoltaic junction box, the width of the first protruding rib along the first direction is W1, W1 = 1.1 mm ± 0.05 mm; the height of the first protruding rib along the third direction is H1, H1 = 0.25 mm ± 0.03 mm; and the length L1 of the first protruding rib along the second direction is greater than the diameter R1 of the first pin.

[0015] And / or, the width of the second protruding rib along the first direction is W2, W2 = 1.1 mm ± 0.05 mm; the height of the second protruding rib along the third direction is H2, H2 = 0.25 mm ± 0.03 mm; and the length L2 of the second protruding rib along the second direction is greater than the diameter R2 of the second pin.

[0016] As an optional technical scheme of the photovoltaic junction box, the first pin is bent to form a first welding portion, and a length of the first welding portion is not less than a distance between a first first protruding rib and a last first protruding rib in a first direction; and / or, the second pin is bent to form a second welding portion, and a length of the second welding portion is not less than a distance between a first second protruding rib and a last second protruding rib in the first direction.

[0017] As an optional technical scheme of the photovoltaic junction box, a distance between two adjacent first protruding ribs is D1, and D1=2.8mm±0.1mm; and / or, a distance between two adjacent second protruding ribs is D2, and D2=2.8mm±0.1mm.

[0018] As an optional technical scheme of the photovoltaic junction box, a side, away from the first protruding rib, of the first conductive terminal is provided with a first groove, and a side, away from the second protruding rib, of the second conductive terminal is provided with a second groove; the photovoltaic junction box further comprises a first tin block and a second tin block, the first tin block is arranged in the first groove, and the second tin block is arranged in the second groove.

[0019] As an optional technical scheme of the photovoltaic junction box, the first groove and the first protruding rib are arranged in one-to-one correspondence, and the second groove and the second protruding rib are arranged in one-to-one correspondence.

[0020] As an optional technical scheme of the photovoltaic junction box, a first protruding block is further arranged on the first conductive terminal, the first protruding rib is formed on the first protruding block, a side, away from the first protruding rib, of the first protruding block is formed with a first groove portion, and the first groove is accommodated in the first groove portion;

[0021] And / or, a second protruding block is further arranged on the second conductive terminal, the second protruding rib is formed on the second protruding block, a side, away from the second protruding rib, of the second protruding block is formed with a second groove portion, and the second groove is accommodated in the second groove portion.

[0022] As an optional technical scheme of the photovoltaic junction box, the photovoltaic junction box further comprises a positioning rib, one end of the positioning rib is connected with the first conductive terminal, the other end of the positioning rib is connected with the second conductive terminal, and the positioning rib is arranged in the accommodating space, and the positioning rib is configured to position the diode.

[0023] The second purpose of the utility model lies in providing a photovoltaic module, which has a long service life and high safety performance.

[0024] To achieve the purpose, the utility model adopts the following technical scheme.

[0025] The utility model provides a photovoltaic module, the photovoltaic module includes photovoltaic panel and the photovoltaic junction box in any optional technical scheme, the busbar is led out on the photovoltaic panel, the busbar is connected with the first conductive terminal and the second conductive terminal in the junction box.

[0026] The utility model discloses at least the following beneficial effects:

[0027] The utility model provides a photovoltaic junction box, the photovoltaic junction box includes diode, first conductive terminal and second conductive terminal, wherein, the opposite two ends of diode extend first pin and second pin respectively, the accommodating space for accommodating diode is formed between first conductive terminal and second conductive terminal, a plurality of first convex ribs are provided on first conductive terminal, a plurality of second convex ribs are provided on second conductive terminal, and a plurality of first convex ribs and a plurality of second convex ribs are arranged along the first direction and are arranged along the second direction, and the first direction and the second direction are perpendicular, the first pin is welded with a plurality of first convex ribs, and the second pin is welded with a plurality of second convex ribs.

[0028] The utility model discloses at least the following beneficial effects:

[0029] The utility model further provides a photovoltaic module, which has a longer service life and higher safety performance. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings without creative labor.

[0031] Figure 1 It is the structure schematic of the photovoltaic junction box provided by the utility model embodiments Figure 1 ;

[0032] Figure 2 It is the structure schematic of the photovoltaic junction box provided by the utility model embodiments Figure 2 ;

[0033] Figure 3 is a structure schematic view of a photovoltaic junction box (not showing diode) provided by an embodiment of the present application;

[0034] Figure 4 is a sectional view of the first conductive terminal provided by an embodiment of the present application.

[0035] Reference signs

[0036] 10, diode; 11, first pin; 111, first soldering part; 12, second pin; 121, second soldering part;

[0037] 20, first conductive terminal; 21, first protruding rib; 22, first accommodating area; 23, first side edge; 24, first groove; 25, first protruding block; 26, first slot part;

[0038] 30, second conductive terminal; 31, second protruding rib; 32, second accommodating area; 33, second side edge; 34, second groove; 35, second protruding block; 36, second slot part;

[0039] 40, accommodating space; 50, positioning stop rib. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0042] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0043] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0047] This embodiment provides a photovoltaic junction box that eliminates the need for flux during the welding process between the diode and the first and second conductive terminals, thereby preventing corrosion and the formation of copper oxide on the first and second conductive terminals and reducing safety hazards.

[0048] like Figures 1-4As shown, the photovoltaic junction box mainly includes a diode 10, a first conductive terminal 20, and a second conductive terminal 30. The diode 10 has a first pin 11 and a second pin 12 extending from its opposite ends. A receiving space 40 for accommodating the diode 10 is formed between the first conductive terminal 20 and the second conductive terminal 30. The first conductive terminal 20 has multiple first ribs 21 protruding from it, and the second conductive terminal 30 has multiple second ribs 31 protruding from it. The multiple first ribs 21 and the multiple second ribs 31 are all arranged at equal intervals along a first direction and extend along a second direction, with the first and second directions perpendicular to each other. The first pin 11 is welded to the multiple first ribs 21, and the second pin 12 is welded to the multiple second ribs 31.

[0049] Based on the above design, in this embodiment, by providing multiple first ribs 21 and multiple second ribs 31 on the first conductive terminal 20 and the second conductive terminal 30 respectively, the contact area between the first pin 11 and the first rib 21 and the contact area between the second pin 12 and the second rib 31 can be increased, thereby increasing the welding area of ​​the first pin 11 and the second pin 12. This allows for better fixation of the diode 10 and improves the stability and reliability of the welding. Simultaneously, while ensuring welding stability, the flux used in traditional technologies is eliminated, thus avoiding corrosion and the formation of copper oxide on the first conductive terminal 20 and the second conductive terminal 30, reducing safety hazards.

[0050] Furthermore, in this embodiment, the plurality of first ribs 21 and the plurality of second ribs 31 are arranged at equal intervals along the first direction and extend along the second direction. This ensures that the solder joints between the first pin 11 and the first rib 21 are evenly distributed, and the solder joints between the second pin 12 and the second rib 31 are evenly distributed. This improves the stress distribution on the first pin 11 and the second pin 12, avoids stress concentration, enhances the stability and reliability of the soldering, and reduces the occurrence of diode 10 detachment. Figure 1 As shown, the first direction is Figure 1 The X-axis direction in the diagram, the second direction is... Figure 1 The Y-axis direction in the diagram.

[0051] Optionally, in this embodiment, each first conductive terminal 20 has three first ribs 21, and each second conductive terminal 30 has three second ribs 31. Of course, operators can also set other numbers of first ribs 21 and second ribs 31 according to actual needs.

[0052] like Figures 3-4As shown, in this embodiment, a first receiving area 22 is formed between two adjacent first protrusions 21, and a second receiving area 32 is formed between two adjacent second protrusions 31. Both the first receiving area 22 and the second receiving area 32 are configured to receive molten solder. Specifically, excess solder molten during the welding process can fill the first receiving area 22 and the second receiving area 32, so that the height of the solder is flush with the first protrusions 21 and the second protrusions 31. This allows the first pin 11 to be seamlessly and tightly welded to the first conductive terminal 20, and the second pin 12 to the second conductive terminal 30, thereby improving the stability and reliability of the welding process.

[0053] Furthermore, the first rib 21 and the second rib 31 in this embodiment also optimize heat conduction performance. During the welding process, heat can be transferred to the diode 10 more evenly, reducing the risk of local overheating. The probability of damage to the first conductive terminal 20 and the second conductive terminal 30 is greatly reduced, improving the welding quality and extending the service life. Compared with traditional technology (without multiple first ribs 21 and multiple second ribs 31), the welding current is not concentrated enough and is dispersed throughout the welding area because the entire welding area is welded simultaneously. The area of ​​these welding areas is much larger than the area of ​​the first rib 21 (or the second rib 31), so the welding effect is unstable. Some areas may have a welding force greater than 200N, while others may have a welding force less than 100N, resulting in a significant reduction in welding quality and low product yield. With the setting of the first rib 21 and the second rib 31 in this embodiment, the welding force of both the first pin 11 and the second pin 12 can reach the requirement of more than 120N.

[0054] like Figures 1-3 As shown, in this embodiment, the first conductive terminal 20 has two first side edges 23 extending along a third direction, and the two first side edges 23 are arranged opposite each other along the first direction; the second conductive terminal 30 has two second side edges 33 extending along a third direction, and the two second side edges 33 are arranged opposite each other along the first direction. The third direction is perpendicular to both the first and second directions. The third direction is... Figure 1 The first pin 11 is positioned between two first side edges 23, with a first gap between each end of the first pin 11 and the two first side edges 23. The second pin 12 is positioned between two second side edges 33, with a second gap between each end of the second pin 12 and the two second side edges 33. In other words, in this embodiment, the first pin 11 does not contact the two oppositely positioned first side edges 23, and the second pin 12 does not contact the two oppositely positioned second side edges 33. This avoids the risk of deformation of the first and second side edges 23 due to the welding torch tip being too close to them during welding, thus improving product yield.

[0055] Optionally, such as Figure 4 As shown, in this embodiment, the width of the first rib 21 along the first direction is W1, W1 = 1.1mm ± 0.05mm; the height of the first rib 21 along the third direction is H1, H1 = 0.25mm ± 0.03mm; the length L1 of the first rib 21 along the second direction is greater than the diameter R1 of the first pin 11. This ensures that the first rib 21 and the first pin 11 have sufficient contact area, improving welding stability. And / or, the width of the second rib 31 along the first direction is W2, W2 = 1.1mm ± 0.05mm; the height of the second rib 31 along the third direction is H2, H2 = 0.25mm ± 0.03mm; the length L2 of the second rib 31 along the second direction is greater than the diameter R2 of the second pin 12. This ensures that the second rib 31 and the second pin 12 have sufficient contact area, improving welding stability.

[0056] It is understood that in this embodiment, both the first protruding rib 21 and the second protruding rib 31 are manufactured by stamping, and the dimensions of the first protruding rib 21 and the second protruding rib 31 may be the same or different. For ease of manufacturing, this embodiment preferably uses the same dimensions and number of the first protruding rib 21 and the second protruding rib 31.

[0057] When the width W1 of the first rib 21 and the width W2 of the second rib 31 are both too small, the punch is prone to breakage during the stamping process, making it impossible to complete the stamping. When the width W1 of the first rib 21 and the width W2 of the second rib 31 are both too large, the volume of the first receiving area 22 and the second receiving area 32 will be too small, failing to fully contain the molten solder. The solder will overflow to other locations of the first conductive terminal 20 and the second conductive terminal 30, easily causing a short circuit risk and reducing product yield.

[0058] When the height H1 of the first rib 21 and the height H2 of the second rib 31 are too high, the lifespan of the punch will be drastically reduced. When the height H1 of the first rib 21 and the height H2 of the second rib 31 are too low, it is difficult to make sufficient contact with the first pin 11 and the second pin 12, the welding area is reduced, and there is a risk of poor soldering.

[0059] like Figure 1As shown, in this embodiment, the first pin 11 is bent at 90° to form a first weld portion 111, and the length of the first weld portion 111 is not less than the distance between the first first rib 21 and the last first rib 21 along the first direction; and / or, the second pin 12 is bent at 90° to form a second weld portion 121, and the length of the second weld portion 121 is not less than the distance between the first second rib 31 and the last second rib 31 along the first direction. This ensures that the first weld portion 111 of the first pin 11 can form an effective contact area with each first rib 21, and ensures that the second weld portion 121 of the second pin 12 can form an effective contact area with each second rib 31, thereby improving the stability and reliability of the weld.

[0060] For example, such as Figure 4 As shown, in this embodiment, the distance between two adjacent first ribs 21 is D1, D1 = 2.8mm ± 0.1mm; and / or, the distance between two adjacent second ribs 31 is D2, D2 = 2.8mm ± 0.1mm. Specifically, the length of the first pin 11 and the second pin 12 is usually 9mm. After a 90° bend, the effective length of the first welding part 111 and the second welding part 121 is 7mm. In this embodiment, a first gap is provided between both ends of the first pin 11 and the two first side edges 23; a second gap is provided between both ends of the second pin 12 and the two second side edges 33. The distance between the first gap and the second gap is 1mm. In this embodiment, it is preferable that there are three first ribs 21 and three second ribs 31. At this point, the distance between the two first ribs 21 (or the second ribs 31) is 2.8 mm, and the distance between the three first ribs 21 (or the second ribs 31) is 5.6 mm. Adding the width of the first rib 21 (or the second rib 31) of 1.1 mm, the three first ribs 21 (or the second ribs 31) occupy a total distance of 5.6 mm + 1.1 mm = 6.7 mm. This distance is less than the 7 mm length of the first welded part 111. Therefore, in this embodiment, it is more reasonable to set the distance between two adjacent first ribs 21 (or second ribs 31) to 2.8 mm ± 0.1 mm.

[0061] Preferably, in this embodiment, the first rib 21 and the second rib 31 are the same in size and number, which facilitates processing and improves processing efficiency.

[0062] like Figure 2As shown, the first conductive terminal 20 has a first groove 24 on the side opposite to the first protrusion 21, and the second conductive terminal 30 has a second groove 34 on the side opposite to the second protrusion 31. The photovoltaic junction box also includes a first solder block and a second solder block (not shown in the figure). The first solder block is disposed in the first groove 24, and the second solder block is disposed in the second groove 34. The first groove 24 (second groove 34) can accommodate the molten first solder block (second solder block) during soldering. The solder flow will accumulate in the first groove 24 (second groove 34) and will not flow out of the first groove 24 (second groove 34), ensuring that the thickness of the first solder block (second solder block) after soldering meets the standard. For example, the thickness of the first solder block and the second solder block is usually set to 1 mm.

[0063] Conversely, without the first groove 24 and the second groove 34, the solder flow would spread out during soldering, resulting in a large solder flow area. This would cause solder to cover areas that do not need soldering, while the solder thickness would be insufficient in areas that do need soldering, making it difficult to meet customer needs and also greatly compromising aesthetics.

[0064] Optionally, in this embodiment, the first groove 24 can be formed simultaneously with the stamping of the first rib 21, that is, the first groove 24 and the first rib 21 are configured in a one-to-one correspondence. Similarly, the second groove 34 can be formed simultaneously with the stamping of the second rib 31, that is, the second groove 34 and the second rib 31 are configured in a one-to-one correspondence. This simplifies the processing steps, improves processing efficiency, and saves costs.

[0065] like Figures 2-4 As shown, the first conductive terminal 20 is further provided with a first protrusion 25, a first rib 21 is formed on the first protrusion 25, a first groove 26 is formed on the side of the first protrusion 25 away from the first rib 21, and a first groove 24 is accommodated in the first groove 26; and / or, the second conductive terminal 30 is further provided with a second protrusion 35, a second rib 31 is formed on the second protrusion 35, a second groove 36 is formed on the side of the second protrusion 35 away from the second rib 31, and a second groove 34 is accommodated in the second groove 36.

[0066] The first bump 25 raises the first rib 21 by a certain distance, thereby reducing the distance between the first rib 21 and the first pin 11, facilitating soldering and improving soldering strength and reliability. Simultaneously, the back of the first bump 25 forms a first groove 26, which maximizes the solder flow generated during soldering of the first solder block, providing a larger space for the solder flow to accumulate, reducing or preventing solder flow from leaking out. Similarly, the second bump 35 and the second groove 36 achieve the same technical effects, which will not be elaborated further here.

[0067] Optionally, in this embodiment, the first protrusion 25 and the second protrusion 35 have the same size, and the first groove 26 and the second groove 36 have the same size, which facilitates processing and improves work efficiency.

[0068] like Figures 1-3 As shown, in this embodiment, the photovoltaic junction box further includes a positioning rib 50. One end of the positioning rib 50 is connected to the first conductive terminal 20, and the other end is connected to the second conductive terminal 30. The positioning rib 50 is disposed within the accommodating space 40 and is configured to position the diode 10. The positioning rib 50 can position the diode 10, reducing or preventing displacement of the diode 10 and improving welding efficiency.

[0069] Optionally, such as Figures 1-3 As shown, in the production process of this photovoltaic junction box, two first conductive terminals 20 and two second conductive terminals 30 are formed together. In other words, the two first conductive terminals 20 and two second conductive terminals 30 formed by stamping are connected together by a terminal bridge. In subsequent use, it is only necessary to cut off the terminal bridge, which improves processing efficiency and saves costs.

[0070] This embodiment also provides a photovoltaic module, which includes a photovoltaic panel and the aforementioned photovoltaic junction box. Busbars extend from the photovoltaic panel and are connected to both the first conductive terminal 20 and the second conductive terminal 30 in the junction box. Specifically, multiple busbars are provided, and each corresponding busbar is soldered to a first solder block on the first conductive terminal 20 and a second solder block on the second conductive terminal 30, thereby enabling current conduction between the photovoltaic junction box and the battery string in the photovoltaic panel.

[0071] Because this photovoltaic module has a top-mounted photovoltaic junction box, it has a long service life and high safety performance.

[0072] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0073] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. Photovoltaic junction box, characterized in that The utility model relates to a diode (10), the opposite two ends of diode (10) respectively extend first pin (11) and second pin (12); First conductive terminal (20) and second conductive terminal (30) form the accommodation space (40) between first conductive terminal (20) and second conductive terminal (30) for accommodating diode (10);First conductive terminal (20) is provided with a plurality of first convex ribs (21), and second conductive terminal (30) is provided with a plurality of second convex ribs (31), and a plurality of first convex ribs (21) and a plurality of second convex ribs (31) are arranged along the first direction and extend along the second direction, and the first direction and the second direction are perpendicular;First pin (11) is welded with a plurality of first convex ribs (21), and second pin (12) is welded with a plurality of second convex ribs (31). First accommodation area (22) is formed between two adjacent first convex ribs (21), and second accommodation area (32) is formed between two adjacent second convex ribs (31), and first accommodation area (22) and second accommodation area (32) are configured to accommodate molten solder.

2. The photovoltaic junction box of claim 1, wherein, Two first side edges (23) extend along the third direction on first conductive terminal (20), and two first side edges (23) are oppositely arranged along the first direction;Two second side edges (33) extend along the third direction on second conductive terminal (30), and two second side edges (33) are oppositely arranged along the first direction, and the third direction is perpendicular to the first direction and the second direction; 3. The photovoltaic junction box of claim 1, wherein, First pin (11) is arranged between two first side edges (23), and first gap is arranged between the two side ends of first pin (11) and two first side edges (23); Second pin (12) is arranged between two second side edges (33), and second gap is arranged between the two side ends of second pin (12) and two second side edges (33). The width of first convex rib (21) along the first direction is W1, W1=1.1mm±0.05mm;The height of first convex rib (21) along the third direction is H1, H1=0.25mm±0.03mm;The length L1 of first convex rib (21) along the second direction is greater than the diameter R1 of first pin (11); 4. The photovoltaic junction box of claim 1, wherein, And / or, the width of second convex rib (31) along the first direction is W2, W2=1.1mm±0.05mm;The height of second convex rib (31) along the third direction is H2, H2=0.25mm±0.03mm;The length L2 of second convex rib (31) along the second direction is greater than the diameter R2 of second pin (12). ​ 5. The photovoltaic junction box of claim 1, wherein, The first pin (11) is bent to form a first welding portion (111), the length of the first welding portion (111) is not less than the distance between the first first protrusions (21) and the last first protrusions (21) in the first direction; and / or, the second pin (12) is bent to form a second welding portion (121), the length of the second welding portion (121) is not less than the distance between the first second protrusions (31) and the last second protrusions (31) in the first direction.

6. The photovoltaic junction box of claim 5, wherein, The distance between two adjacent first protrusions (21) is D1, D1 = 2.8 mm ± 0.1 mm; and / or, the distance between two adjacent second protrusions (31) is D2, D2 = 2.8 mm ± 0.1 mm.

7. The photovoltaic junction box of claim 1, wherein, The first conductive terminal (20) is provided with a first groove (24) on the side away from the first protrusions (21), and the second conductive terminal (30) is provided with a second groove (34) on the side away from the second protrusions (31); the photovoltaic junction box further comprises a first tin block and a second tin block, the first tin block is arranged in the first groove (24), and the second tin block is arranged in the second groove (34).

8. The photovoltaic junction box of claim 7, wherein, The first groove (24) and the first protrusion (21) are arranged one by one, and the second groove (34) and the second protrusion (31) are arranged one by one.

9. The photovoltaic junction box of claim 7, wherein, The first conductive terminal (20) is further provided with a first protrusion (25), the first protrusion (21) is formed on the first protrusion (25), the first protrusion (25) is formed with a first groove portion (26) on the side away from the first protrusion (21), and the first groove (24) is accommodated in the first groove portion (26); And / or, the second conductive terminal (30) is further provided with a second protrusion (35), the second protrusion (31) is formed on the second protrusion (35), the second protrusion (35) is formed with a second groove portion (36) on the side away from the second protrusion (31), and the second groove (34) is accommodated in the second groove portion (36).

10. The photovoltaic junction box of claim 1, wherein, The photovoltaic junction box further comprises a positioning stop rib (50), one end of the positioning stop rib (50) is connected with the first conductive terminal (20), the other end is connected with the second conductive terminal (30), and the positioning stop rib (50) is arranged in the accommodation space (40), and the positioning stop rib (50) is configured to position the diode (10).

11. The photovoltaic junction box according to any of claims 1-10, characterized in that, The plurality of first protrusions (21) and the plurality of second protrusions (31) are arranged at equal intervals in the first direction.

12. A photovoltaic module characterized by, The photovoltaic assembly comprises a photovoltaic panel and the photovoltaic junction box of any one of claims 1-11, and a busbar is led out from the photovoltaic panel, and the busbar is connected with the first conductive terminal (20) and the second conductive terminal (30) in the junction box.

Images