Diode and photovoltaic junction box

Abstract

The embodiment of the utility model discloses a diode and a photovoltaic junction box, the diode comprises a main body part, the two ends of the main body part are respectively provided with a first forming part and a second forming part, the first forming part is suitable for being connected with a cable, and the second forming part is suitable for bending and extending towards one side of the main body part. The second forming part can increase the bearing area between the second forming part and the box body, disperse stress, reduce the processing difficulty of the diode and improve the welding yield.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic components, and in particular to a diode and a photovoltaic junction box. Background Art

[0002] The photovoltaic solar panel junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the power generated by solar cells to external circuits, and conduct the current generated by photovoltaic modules. The junction box is glued to the back panel of the module through silicone, and the lead wires in the module are connected together through the internal circuits in the junction box. The internal circuits are connected to the external cables, so that the module and the external cables are conductive.

[0003] However, with respect to the above-mentioned related technologies, the inventors believe that there are defects: the area of ​​the diode contacting the box body in the prior art is small, the heat dissipation and support performance of the box body for the diode is poor, and the junction box body may collapse due to excessive temperature when welding the bus bar. Summary of the invention

[0004] One or more embodiments of the present application provide a diode and a photovoltaic junction box to solve or at least partially alleviate the problem of low waterproof permeability in the related art.

[0005] One or more embodiments of the present application provide a diode and a photovoltaic junction box, which adopt the following technical solution:

[0006] A diode comprises a main body, wherein two ends of the main body are respectively provided with a first forming part and a second forming part, wherein the first forming part is suitable for connecting with a cable, and the second forming part is suitable for bending and extending toward one side of the main body.

[0007] In some embodiments, a connection port is provided on the main body, and the connection port is arranged close to the center of the main body. An electrode confirmation port and a positioning port are provided around the main body, and the electrode confirmation port and the positioning port are arranged away from the connection port.

[0008] In some embodiments, the main body includes a first conductor, a second conductor and a packaging body, a combined gap is suitable for forming between the first conductor and the second conductor, the packaging body is suitable for connecting the first conductor and the second conductor and covering the combined gap, the first conductor and the second conductor are both provided with connecting ports, the combined gap includes a first gap along a first direction and a second gap along a second direction, the connecting port on the first conductor and the connecting port on the second conductor are suitable for being respectively arranged on both sides of the first gap, a connector is provided between the first conductor and the second conductor, the connector is suitable for passing through the second gap along the first direction and connecting the first conductor and the second conductor.

[0009] In some embodiments, the first conductor is provided with at least one first combining portion at the second gap, and the second conductor is provided with at least one second combining portion at the second gap, and the first combining portion and the second combining portion are suitable for one-to-one matching and alignment.

[0010] In some embodiments, a heat dissipation cavity is defined around the package body, and at least a portion of an edge of the first conductor outside the combined gap and / or at least a portion of an edge of the second conductor outside the combined gap is suitable for being exposed in the heat dissipation cavity.

[0011] In some embodiments, an upper surface of the first forming portion and an upper surface of the main body are located in the same plane; and / or a lower surface of the first forming portion and a lower surface of the main body are located in the same plane.

[0012] In some embodiments, a riveting portion is disposed on a side of the first forming portion, and a riveting port is formed on the riveting portion.

[0013] A photovoltaic junction box comprises a box body and any of the above-mentioned diodes, wherein a plurality of first pressure-bearing platforms are arranged in the box body, some of which are suitable for supporting the main body, and some of which are suitable for supporting the second forming part.

[0014] A photovoltaic junction box comprises a box body and the diodes described in some embodiments, wherein the box body is provided with electrode confirmation posts and positioning posts, wherein the electrode confirmation posts are suitable for one-to-one matching connection with the electrode confirmation ports, and the positioning posts are suitable for one-to-one matching connection with the positioning ports.

[0015] In some embodiments, a second pressure-bearing platform is disposed in the box body, and the second pressure-bearing platform is suitable for supporting the main body at the electrode confirmation port.

[0016] Compared with the related art, one or more embodiments of the present application include at least one of the following beneficial technical effects:

[0017] (1) The diode of the present application is provided with a second molded part on its main body, and the second molded part can cooperate with the junction box to support the main body, so as to improve the structural stability of the diode during the welding pressure process, help the main body to disperse the stress, reduce the probability of welding collapse, and increase the heat conduction and heat dissipation area of ​​the main body to alleviate the temperature rise during the welding process. In daily use, it can also help the diode adapt to a hotter environment, improve stability, and reduce the failure rate;

[0018] (2) The diode of the present application designs the relative position between the package and the connector so that when the first conductor and the second conductor are welded to the bus bar, if the package exceeds its stress tolerance limit and cracks, the impact of this phenomenon on the connector can be minimized as much as possible, so that the connector can continue to work and reduce the occurrence of short circuits caused by welding operations;

[0019] (3) The junction box of the present application helps to install the diode in the correct position in the box body by setting an electrode confirmation port on the diode and an electrode confirmation column on the box body, and optimizes the position of the electrode confirmation port and the positioning port on the main body so that the electrode confirmation port and the positioning port are away from the connection port. When the bus bar of the diode is welded, the heat and pressure at the electrode confirmation port and the positioning port can be reduced, thereby reducing the probability of damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0021] Figure 1 FIG. 4 is an overall structural view of a diode according to some embodiments of the present application.

[0022] Figure 2 It is a schematic diagram of the coordination between a diode and a box body according to some embodiments of the present application.

[0023] Figure 3 Schematic diagram of the arrangement of a package body and a connector according to some embodiments of the present application.

[0024] Figure 4 This is a schematic diagram of a first combination of a first conductor and a second conductor according to some embodiments of the present application.

[0025] Figure 5 This is a schematic diagram of a second combination of a first conductor and a second conductor according to some embodiments of the present application.

[0026] Figure 6A schematic diagram of a third combination of a first conductor and a second conductor according to some embodiments of the present application;

[0027] Figure 7 is an overall structural view of a junction box according to some embodiments of the present application;

[0028] Figure 8 It is an overall structural view of a box body according to some embodiments of the present application.

[0029] In the figure: 1. main body; 11. connecting port; 12. electrode confirmation port; 13. positioning port; 14. first conductor; 141. first joint; 15. second conductor; 151. second joint; 16. packaging body; 161. heat dissipation cavity; 17. combined gap; 171. first gap; 172. second gap; 18. connecting body; 19. packaging port; 2. first molding part; 21. riveting part; 211. riveting interface; 3. second molding part; 4. cable; 5. box body; 51. first pressure platform; 52. electrode confirmation column; 53. positioning column; 54. second pressure platform. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings showing multiple embodiments of the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without spending creative work will fall within the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific implementation methods, and are not intended to limit this application; the terms "including", "comprising", "having", "having", "containing", "including", etc. in the specification and claims of this application and the above-mentioned figure description are open-ended words. Therefore, "including", "comprising", "having" is a method or device with one or more steps or elements, for example, which has one or more steps or elements, but is not limited to having only these one or more elements. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "multiple" is two or more.

[0032] In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0035] As mentioned above, it should be emphasized that when the term "includes / comprising" is used in this specification, it is used to clearly indicate the presence of the features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components. As used in this application, the singular forms "a", "an" and "the" also include plural forms, unless the context clearly indicates otherwise.

[0036] One or more embodiments of the present application disclose a diode, referring to Figures 1 to 8 , including a main body 1, with a first molded portion 2 and a second molded portion 3 respectively provided at both ends of the main body 1, the first molded portion 2 is suitable for connecting with a cable 4, and the second molded portion 3 is suitable for bending and extending toward one side of the main body 1. When the main body 1 is installed in a junction box, the second molded portion 3 is suitable for cooperating and abutting with the junction box to support the main body 1.

[0037] It is understandable that when a diode of a traditional structure is installed in a junction box, the junction box will support the diode at the welding point. However, since the pressure on the diode during welding may cause displacement and the contact temperature between the diode and the junction box is relatively high, if the support is insufficient, the structure of the diode may be displaced, affecting the welding effect. It may also cause a melting depression at the contact position between the junction box and the diode, that is, a weld collapse phenomenon. After the second forming portion 3 is provided, the end of the main body 1 can also obtain corresponding support, thereby improving the stability of the welding process and reducing the displacement of the main body 1. At the same time, the second forming portion 3 can also increase the heat dissipation area, and utilize the high thermal conductivity of the main body 1 to achieve faster and more uniform heat dissipation, thereby reducing the probability of weld collapse.

[0038] In some embodiments, both ends of the main body 1 can be first formed into a first formed portion 2, and then the first formed portion 2 at one end is partially cut off and the remaining portion is bent to obtain a second formed portion 3. Such processing can reduce processing steps, reduce the difficulty of structural forming, and improve production efficiency.

[0039] In some embodiments, a connection port 11 is provided on the main body 1, and the connection port 11 is arranged near the center of the main body 1. An electrode confirmation port 12 and a positioning port 13 are provided around the main body 1, and the electrode confirmation port 12 and the positioning port 13 are arranged away from the connection port 11. In the present application, the connection port 11 is used for connecting and welding the bus bar, so the vicinity of the connection port 11 will be contacted by hot welding equipment such as a soldering iron tip, and the electrode confirmation port 12 and the positioning port 13 are respectively used to connect with the corresponding structures on the box body 5. By designing them away from the connection port 11, the probability of the electrode confirmation port 12 and the positioning port 13 contacting hot welding equipment such as a soldering iron tip can be reduced, thereby improving the yield rate.

[0040] In some embodiments, the electrode confirmation opening 12 and the positioning opening 13 are shaped differently to provide a fool-proof differentiation design to reduce the probability of diode installation errors.

[0041] like Figure 1 In the illustrated embodiment, the main body 1 is rectangular in shape, and the electrode confirmation port 12 and the positioning port 13 are respectively disposed at the four corners of the main body 1 , so that the distance between the electrode confirmation port 12 and the positioning port 13 and the connection port 11 can be maximized.

[0042] like Figure 1 and 3 In the illustrated embodiment, the main body 1 includes a first conductor 14, a second conductor 15 and a packaging body 16. A combined gap 17 is formed between the first conductor 14 and the second conductor 15. The packaging body 16 is suitable for connecting the first conductor 14 and the second conductor 15 and covering the combined gap 17. The packaging body 16 is used for connecting and fixing the first conductor 14 and the second conductor 15, reducing the relative movement between the first conductor 14 and the second conductor 15, and protecting the connection between the first conductor 14 and the second conductor 15.

[0043] like Figure 3 In the illustrated embodiment, a plurality of packaging openings 19 may be provided on the main body 1 at both sides of the combined gap 17 for connection of the packaging body 16 by injection molding.

[0044] In some embodiments, a connecting port 11 is provided on the first conductor 14 and the second conductor 15, and the combined gap 17 includes a first gap 171 along the first direction and a second gap 172 along the second direction. The connecting port 11 on the first conductor 14 and the connecting port 11 on the second conductor 15 are suitable for being arranged on both sides of the first gap 171 respectively. A connector 18 is provided between the first conductor 14 and the second conductor 15, and the connector 18 is suitable for passing through the second gap 172 along the first direction and connecting the first conductor 14 and the second conductor 15.

[0045] In the present application, the connector 18 is generally a jumper wire, which is used to connect and conduct the first conductor 14 and the second conductor 15 and has a conductive function.

[0046] It is understandable that the connector 11 will be contacted and pressed by the welding equipment, and the first conductor 14 and the second conductor 15 will also be subjected to corresponding forces. When the connectors 11 on the first conductor 14 and the second conductor 15 on both sides of the first gap 171 are subjected to different forces, the package 16 will have a greater probability of cracking along the first direction. In the traditional design, the connector 18 is arranged crosswise with the first direction, and the cracking of the package 16 may cause the connector 18 to break, thereby causing a short circuit of the diode. In the present application, by optimizing the connection direction of the connector 18 and arranging the connector 18 parallel to the first direction, the connection direction of the connector 18 can be made nearly parallel to the cracking direction, so that it is not easily affected by the cracking of the package 16, thereby increasing the probability of normal use of the diode.

[0047] like Figure 3 In the illustrated embodiment, the first direction is the up-down direction, and the second direction is the left-right direction.

[0048] In some embodiments, the first conductor 14 is preferably made of copper sheet, the second conductor 15 is preferably made of copper sheet, and the packaging body 16 is preferably made of plastic packaging material.

[0049] In some embodiments, a heat dissipation cavity 161 is opened around the package body 16, and at least a portion of the edge of the first conductor 14 outside the combined gap 17 and / or at least a portion of the edge of the second conductor 15 outside the combined gap 17 are suitable for being exposed in the heat dissipation cavity 161, and the heat dissipation cavity 161 is used to improve the overall heat dissipation performance of the diode.

[0050] like Figure 3 In the illustrated embodiment, heat dissipation cavities 161 are provided at the upper and lower ends of the package body 16, and a portion of the edge of the first conductor 14 outside the combined gap 17 and a portion of the edge of the second conductor 15 outside the combined gap 17 are respectively exposed in the heat dissipation cavities 161 at the upper and lower ends of the package body 16, thereby improving the heat dissipation performance of the first conductor 14 and the second conductor 15.

[0051] In some embodiments, the first conductor 14 is provided with at least one first combining portion 141 at the second gap 172, and the second conductor 15 is provided with at least one second combining portion 151 at the second gap 172. The first combining portion 141 and the second combining portion 151 are suitable for one-to-one matching and alignment. The first conductor 14 and the second conductor 15 are combined through the first combining portion 141 and the second combining portion 151 to reduce the displacement and deformation of the diode during assembly and welding of the bus bar. It can be understood that the first combining portion 141 and the second combining portion 151 can at least limit the displacement and deformation of the first conductor 14 and the second conductor 15 in the second direction.

[0052] like Figure 4In the illustrated embodiment, there are a plurality of first combining portions 141 and a plurality of second combining portions 151 , and the first combining portions 141 and the second combining portions 151 are sawtooth structures, and the first combining portions 141 and the second combining portions 151 are staggered.

[0053] like Figure 5 In the illustrated embodiment, there are a plurality of first combining portions 141 and a plurality of second combining portions 151 . The first combining portions 141 and the second combining portions 151 are strip-shaped structures, and the first combining portions 141 and the second combining portions 151 are staggered.

[0054] like Figure 6 In the illustrated embodiment, the first combining portion 141 is an arc-shaped protrusion, the second combining portion 151 is an arc-shaped depression, and the first combining portion 141 and the second combining portion 151 are embedded and matched.

[0055] In some embodiments, the upper surface of the first molded part 2 and the upper surface of the main body 1 are located in the same plane, and the lower surface of the first molded part 2 and the lower surface of the main body 1 are located in the same plane, which can make the surfaces of the first molded part 2 and the main body 1 smoother and reduce the reduction in welding yield caused by the influence of surface height difference.

[0056] like Figure 1 In the illustrated embodiment, a riveting portion 21 is disposed on the side of the first forming portion 2 , and a riveting port 211 is provided on the riveting portion 21 , so that the riveting of the first forming portion 2 can be tighter and less likely to loosen.

[0057] One or more embodiments of the present application disclose a photovoltaic junction box, referring to Figures 7 and 8 , including a box body 5 and a diode of any of the above embodiments, a plurality of first pressure platforms 51 are arranged in the box body 5, some of the first pressure platforms 51 are suitable for supporting the main body 1, and some of the first pressure platforms 51 are suitable for supporting the second forming part 3.

[0058] The first conductor 14 can disperse welding stress under the action of the cable 4 and the first pressure platform 51 , and the second conductor 15 can disperse welding stress under the action of multiple first pressure platforms 51 (including the first pressure platform 51 under the second forming portion 3 ).

[0059] In some embodiments, the first pressure platform 51 is a thickened structure, which improves the bearing capacity of the first pressure platform 51, thereby better supporting the main body 1, and at the same time can absorb and disperse more heat generated by welding, reducing the probability of melting.

[0060] One or more embodiments of the present application disclose a photovoltaic junction box, referring to Figures 7 and 8, including a box body 5 and a diode in some embodiments, an electrode confirmation column 52 and a positioning column 53 are arranged in the box body 5, the electrode confirmation column 52 is suitable for one-to-one connection with the electrode confirmation port 12, and the positioning column 53 is suitable for one-to-one connection with the positioning port 13.

[0061] In some embodiments, the electrode confirmation port 12 is a notch structure, and the electrode confirmation port 12 can be embedded in the electrode confirmation column 52. The positioning port 13 is a hole structure, and the positioning port 13 can be sleeved on the positioning column 53, thereby limiting the movement of the diode.

[0062] In some embodiments, a second pressure platform 54 is disposed in the box body 5 , and the second pressure platform 54 is suitable for supporting the main body 1 at the electrode confirmation port 12 to improve the connection stability between the main body 1 and the electrode confirmation port 12 .

[0063] like Figure 8 In the illustrated embodiment, the second pressure platform 54 and the electrode confirmation column 52 are integrally connected, and the second pressure platform 54 and the electrode confirmation column 52 can cooperate with each other to enhance the structural strength and support and fix the main body 1 .

[0064] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A diode, characterized in that: It comprises a main body, with a first forming part and a second forming part respectively arranged at two ends of the main body, the first forming part is suitable for connecting with a cable, and the second forming part is suitable for bending and extending toward one side of the main body.

2. A diode as claimed in claim 1, characterized in that: The main body is provided with a connection port, which is arranged close to the center of the main body. The main body is provided with an electrode confirmation port and a positioning port around it, which are arranged away from the connection port.

3. A diode as claimed in claim 1, characterized in that: The main body includes a first conductor, a second conductor and a packaging body, a combined gap is formed between the first conductor and the second conductor, the packaging body is suitable for connecting the first conductor and the second conductor and covering the combined gap, the first conductor and the second conductor are both provided with connecting ports, the combined gap includes a first gap along a first direction and a second gap along a second direction, the connecting port on the first conductor and the connecting port on the second conductor are suitable for being respectively arranged on both sides of the first gap, a connector is provided between the first conductor and the second conductor, the connector is suitable for passing through the second gap along the first direction and connecting the first conductor and the second conductor.

4. A diode as claimed in claim 3, characterized in that: The first conductor is provided with at least one first combining portion at the second gap, and the second conductor is provided with at least one second combining portion at the second gap, and the first combining portion and the second combining portion are suitable for one-to-one matching and alignment.

5. A diode as claimed in claim 3, characterized in that: A heat dissipation cavity is formed around the package body, and at least a portion of the edge of the first conductor outside the combined gap and / or at least a portion of the edge of the second conductor outside the combined gap is suitable for being exposed in the heat dissipation cavity.

6. A diode as claimed in claim 1, characterized in that: The upper surface of the first molded portion and the upper surface of the main body are located in the same plane; and / or the lower surface of the first molded portion and the lower surface of the main body are located in the same plane.

7. A diode as claimed in claim 1, characterized in that: A riveting portion is disposed on the side of the first forming portion, and a riveting port is formed on the riveting portion.

8. A photovoltaic junction box, characterized in that: It comprises a box body and the diode according to any one of claims 1 to 7, wherein a plurality of first pressure-bearing platforms are arranged in the box body, some of the first pressure-bearing platforms are suitable for supporting the main body, and some of the first pressure-bearing platforms are suitable for supporting the second forming part.

9. A photovoltaic junction box, characterized in that: It comprises a box body and the diode as claimed in claim 2, wherein the box body is provided with an electrode confirmation column and a positioning column, the electrode confirmation column is suitable for one-to-one matching connection with the electrode confirmation port, and the positioning column is suitable for one-to-one matching connection with the positioning port.

10. A photovoltaic junction box according to claim 9, characterized in that: A second pressure-bearing platform is disposed in the box body, and the second pressure-bearing platform is suitable for supporting the main body at the electrode confirmation port.

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