Plug-in type replaceable diode photovoltaic junction box and photovoltaic module

Abstract

The utility model relates to the technical field of photovoltaic power generation, and discloses a pluggable replaceable diode photovoltaic junction box and a photovoltaic module. The plug-in type replaceable diode photovoltaic junction box comprises a diode module, a box body and a cover body, the diode module comprises a main body, a positive electrode metal pin, a negative electrode metal pin and a diode, the positive electrode metal pin and the negative electrode metal pin are connected to the main body, the diode is arranged on the main body, a P electrode of the diode is electrically connected with the positive electrode metal pin, and an N electrode of the diode is electrically connected with the negative electrode metal pin; the box body is provided with a negative conductive terminal and a positive conductive terminal, and the positive conductive terminal and the negative conductive terminal respectively comprise a diode electrode socket; the cover body covers the box body and is provided with a mounting hole; and the mounting holes are configured to allow the anode metal pin and the cathode metal pin to be inserted, so that the anode metal pin and the cathode metal pin are inserted into the corresponding diode electrode sockets respectively. According to the invention, the diode module is replaced in a plugging manner.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to a plug-in replaceable diode photovoltaic junction box and a photovoltaic module. Background Art

[0002] The photovoltaic junction box is a structural component used to connect the photovoltaic cell string and the controller. A diode is generally provided in the photovoltaic junction box. The diode is connected in parallel with the corresponding photovoltaic cell string to protect the corresponding photovoltaic cell string. In order to facilitate heat dissipation, the photovoltaic junction box is generally filled with thermal conductive silicone.

[0003] However, when the diode is damaged, it is necessary to first disassemble the photovoltaic junction box, take out the thermal conductive silicone, and then remove the damaged diode with a soldering iron; then, install a new diode and re-add the thermal conductive silicone. The operation is rather cumbersome and needs to be improved. Utility Model Content

[0004] The present application provides a plug-in replaceable diode photovoltaic junction box and a photovoltaic module to improve the convenience of replacing damaged diodes.

[0005] In the first aspect, the present application provides a plug-in replaceable diode photovoltaic junction box adopts the following technical solution:

[0006] A plug-in replaceable diode photovoltaic junction box, comprising a diode module, a box body and a cover body;

[0007] The diode module comprises a main body, a positive metal pin, a negative metal pin and a diode, wherein the positive metal pin and the negative metal pin are both connected to the main body, the diode is arranged in the main body, and the P pole of the diode is electrically connected to the positive metal pin, and the N pole of the diode is electrically connected to the negative metal pin;

[0008] The box body is provided with a negative conductive terminal and a positive conductive terminal, and the positive conductive terminal and the negative conductive terminal both include a diode electrode socket and a connecting piece, and the diode electrode socket is connected to the connecting piece;

[0009] The cover body covers the box body, and the cover body is provided with a mounting hole;

[0010] The mounting hole is configured for the insertion of the positive metal pin and the negative metal pin, so that the positive metal pin is inserted into the diode electrode socket of the negative conductive terminal, and the negative metal pin is inserted into the diode electrode socket of the positive conductive terminal, and the peripheral wall of the positive metal pin and the peripheral wall of the negative metal pin are respectively abutted against the inner peripheral wall of the corresponding diode electrode socket, so that the diode is electrically connected to the negative conductive terminal and the positive conductive terminal at the same time.

[0011] By adopting the above technical solution, when installing the diode module, the positive metal pin and the negative metal pin are both inserted into the installation hole, and the positive metal pin is inserted into the diode electrode socket of the negative conductive terminal, and the negative metal pin is inserted into the diode electrode socket of the positive conductive terminal, so that the peripheral walls of the positive metal pin and the negative metal pin are respectively abutted against the inner peripheral walls of the corresponding diode electrode socket, so that the positive metal pin and the negative metal pin can be respectively fixedly connected to the corresponding diode electrode socket; when the diode is damaged and needs to be replaced, the main body is pulled forcefully to separate the positive metal pin and the negative metal pin from the corresponding diode electrode socket, respectively. The operation of this application is simple and quick, which is conducive to improving the convenience of replacing the diode module.

[0012] The main body is located outside the box body and the cover body, which is convenient for the rapid dissipation of the heat generated by the diode, thereby helping to reduce the probability of the diode burning out. At the same time, it reduces the process of filling the heat dissipation silicone, which helps to reduce the cost.

[0013] Optionally, an elastic ring is sleeved on the peripheral wall of the main body, and the outer peripheral wall of the elastic ring fits with the inner peripheral wall of the mounting hole.

[0014] By adopting the above technical solution, the elastic ring fits against the inner wall of the mounting hole, which is beneficial to improving the sealing of the connection between the main body and the cover body and reducing the probability of rainwater, dust, etc. entering the box body through the mounting hole.

[0015] Optionally, a peripheral wall of the main body is provided with a mounting ring groove along its circumference, and the elastic ring is embedded in the mounting ring groove.

[0016] By adopting the above technical solution, the sealing ring is embedded in the installation ring groove, which is beneficial to improving the stability of the sealing ring installation, thereby reducing the probability of the sealing ring falling off.

[0017] Optionally, the box body is provided with an embedding groove, and the diode electrode socket is plugged into the embedding groove.

[0018] By adopting the above technical solution, the diode electrode socket is inserted into the embedding groove, which is beneficial to improving the stability of the diode electrode socket being fixed relative to the box body.

[0019] Optionally, the cover body is provided with a protruding portion, and the main body is provided with a recessed portion for the protruding portion to be inserted.

[0020] By adopting the above technical solution, the convex part cooperates with the concave part to achieve a fool-proof effect, which is beneficial to improving the accuracy of the main body installation and reducing the probability of the main body being inverted.

[0021] Optionally, the connecting piece is provided with a connecting hole, and the connecting hole is configured to allow a busbar of a photovoltaic cell string to be inserted.

[0022] By adopting the above technical solution, the busbar is inserted into the connecting hole, which is beneficial to increase the contact area between the busbar and the corresponding positive conductive terminal or negative conductive terminal, thereby improving the stability of the connection between the busbar and the corresponding positive conductive terminal or negative conductive terminal.

[0023] Optionally, the negative electrode conductive terminal and / or the positive electrode conductive terminal is provided with an output cable.

[0024] In the second aspect, the photovoltaic module provided by the present application adopts the following technical solution:

[0025] A photovoltaic assembly comprises a positive connector, a negative connector, a photovoltaic cell string and the above-mentioned pluggable replaceable diode photovoltaic junction box, wherein the positive connector is electrically connected to the connecting piece of the positive conductive terminal, the negative connector is electrically connected to the connecting piece of the negative conductive terminal, the positive electrode of the photovoltaic cell string is electrically connected to the connecting piece of the positive conductive terminal, and the negative electrode of the photovoltaic cell string is electrically connected to the connecting piece of the negative conductive terminal.

[0026] The present application has at least one of the following beneficial effects:

[0027] 1. When the diode is damaged and needs to be replaced, the positive metal pin and the negative metal pin can be separated from the corresponding diode electrode socket by pulling the main body with force. The operation of this application is simple and quick, which is conducive to improving the convenience of replacing the diode module;

[0028] 2. The elastic ring fits the inner wall of the mounting hole, which is beneficial to improve the sealing of the connection between the main body and the cover body, and reduce the probability of rainwater, dust, etc. entering the box body through the mounting hole;

[0029] 3. The cooperation between the raised part and the recessed part has a fool-proof effect, which is beneficial to improve the accuracy of the main body installation and reduce the probability of the main body being inverted. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a plug-in replaceable diode photovoltaic junction box according to an embodiment of the present application.

[0031] Figure 2 It is an exploded schematic diagram used to show the installation structure of the diode module.

[0032] Figure 3 yes Figure 2 Enlarged view of part A in .

[0033] Figure 4 Yes Remove Figure 1 Schematic diagram behind the cover.

[0034] Figure 5 yes Figure 2 Enlarged view of part B in .

[0035] Figure 6 It is a schematic diagram of the overall structure of a photovoltaic module according to an embodiment of the present application.

[0036] Figure 7 Yes Remove Figure 6 Schematic diagram of the photovoltaic cell string, cover and diode module.

[0037] Figure 8 yes Figure 7 Enlarged view of section C in .

[0038] In the figure, 1. diode module; 11. main body; 111. mounting ring groove; 112. recessed portion; 113. mating portion; 12. positive metal pin; 13. negative metal pin; 14. diode; 2. box body; 21. negative conductive terminal; 211. diode electrode socket; 212. connecting piece; 2121. connecting hole; 22. positive conductive terminal; 23. embedding groove; 24. clearance hole; 3. cover body; 31. mounting hole; 32. raised portion; 4. elastic ring; 5. positive connector; 6. negative connector; 7. photovoltaic cell string; 71. busbar; 8. output cable. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0040] Reference Figure 1 A plug-in replaceable diode photovoltaic junction box includes a diode module 1, a box body 2 and a cover body 3. The cover body 3 covers the box body 2 and is fixed to the box body 2 by snapping.

[0041] Reference Figure 2 The diode module 1 includes a main body 11, a positive metal pin 12, a negative metal pin 13 and a diode 14. The P pole of the diode 14 is welded to the positive metal pin 12, and the N pole of the diode 14 is welded to the negative metal pin 13. The main body 11 is made of plastic material, one end of the positive metal pin 12 and one end of the negative metal pin 13 are integrally injection molded and connected to the main body 11, and the diode 14 is embedded inside the main body 11.

[0042] Reference Figure 2 The outer wall of the cover body 3 on the side away from the box body 2 is integrally formed with a mounting hole 31, and the mounting hole 31 is connected to the inside of the cover body 3. The main body 11 is inserted into the mounting hole 31, and the positive metal pin 12 and the negative metal pin 13 are both inserted into the box body 2 through the mounting hole 31.

[0043] Reference Figure 2The box body 2 is provided with a negative conductive terminal 21 and a positive conductive terminal 22. The negative conductive terminal 21 is used to be electrically connected to the negative electrode of the photovoltaic cell string, and the positive conductive terminal 22 is used to be electrically connected to the positive electrode of the photovoltaic cell string. After the main body 11 is inserted into the mounting hole 31, the positive metal pin 12 contacts the negative conductive terminal 21, and the negative metal pin 13 contacts the positive conductive terminal 22, so as to connect the diode 14 in parallel with the corresponding photovoltaic cell string.

[0044] Reference Figure 3 The negative conductive terminal 21 and the positive conductive terminal 22 each include a diode electrode socket 211 and a connecting piece 212, and the connecting piece 212 and the diode electrode socket 211 are integrally bent and formed; the box body 2 is integrally formed with an embedding groove 23, and the diode electrode socket 211 is inserted into the embedding groove 23. The connecting piece 212 is penetrated and opened with a connecting hole 2121 along its thickness direction, and the inner wall of the box body 2 at the connecting hole 2121 is integrally formed with a clearance hole 24, which passes through the outer wall of the box body 2, so that the busbar of the photovoltaic cell string can be inserted into the connecting hole 2121 through the clearance hole 24, so that the busbar and the connecting piece 212 can be fixedly connected by soldering.

[0045] Reference Figure 2 and Figure 4 When installing the diode module 1, the positive metal pin 12 and the negative metal pin 13 are respectively inserted into the diode electrode socket 211 of the negative conductive terminal 21 and the diode electrode socket 211 of the positive conductive terminal 22 through the mounting hole 31, and the peripheral walls of the positive metal pin 12 and the negative metal pin 13 are abutted against the inner peripheral walls of the corresponding diode electrode socket 211, so that the power socket clamps the corresponding positive metal pin 12 and the negative metal pin 13, so that the positive metal pin 12 and the negative metal pin 13 are respectively fixedly electrically connected to the corresponding diode electrode socket 211.

[0046] Reference Figure 4 The side wall of the main body 11 on the side away from the combined body is provided with a matching portion 113, and the matching portion 113 is used to cooperate with a disassembly tool to disassemble and plug the main body 11. It can be understood that the disassembly tool is a pliers; the matching portion 113 is a two-groove structure, and the matching portion 113 is integrally formed on the main body 11, and the two grooves are respectively used for two clamping claws of the disassembly workpiece to be inserted, so that the disassembly workpiece can clamp the main body 11, so as to pull the main body 11 out of the mounting hole 31. In other embodiments, the matching portion 113 is a convex structure for clamping by the disassembly tool.

[0047] Reference Figure 5The peripheral wall of the main body 11 is integrally formed with a mounting ring groove 111, which is annular along the circumference of the main body 11; an elastic ring 4 is embedded in the mounting ring groove 111, and the outer peripheral wall of the elastic ring 4 is in contact with the inner peripheral wall of the mounting hole 31 to improve the sealing performance between the main body 11 and the mounting hole 31. Specifically, the elastic ring 4 is a rubber ring. In some embodiments, the mounting ring groove 111 is omitted, and the elastic ring 4 is sleeved on the peripheral wall of the main body 11.

[0048] Reference Figure 5 , the cover 3 is provided with a protrusion 32, and the main body 11 is provided with a recess 112. Specifically, the protrusion 32 is block-shaped and integrally formed on the inner peripheral wall of the mounting hole 31; the recess 112 is groove-shaped and integrally formed on the peripheral wall of the main body 11, and the recess 112 passes through the side wall of the main body 11 close to the box body 2. The protrusion 32 and the recess 112 are plugged and matched, which is conducive to improving the accuracy of the installation of the main body 11, so that the positive metal pin 12 is correctly connected to the negative conductive terminal 21, and the negative metal pin 13 is correctly connected to the positive conductive terminal 22.

[0049] In some embodiments, the main body 11 is affixed with an irreversible thermochromic mark (not shown in the figure); when the diode 14 burns out, the color of the irreversible thermochromic mark changes, allowing operators to quickly identify the diode module 1 that needs to be replaced.

[0050] Reference Figure 6 and Figure 7 The present application also discloses a photovoltaic assembly, including a positive connector 5, a negative connector 6, a photovoltaic cell string 7 and the above-mentioned plug-in replaceable diode photovoltaic junction box; the number of the above-mentioned plug-in replaceable diode photovoltaic junction boxes is three, and the positive conductive terminal 22 of one plug-in replaceable diode photovoltaic junction box and the negative conductive terminal 21 of another plug-in replaceable diode photovoltaic junction box are both welded with output cables 8, the output cable 8 connected to the positive conductive terminal 22 is connected to the positive connector 5, and the output cable 8 connected to the negative conductive terminal 21 is connected to the negative connector 6.

[0051] Reference Figure 8 Each positive conductive terminal 22 is welded and connected to the positive busbar 71 of the photovoltaic cell string 7 , and each negative conductive terminal 21 is welded and connected to the negative busbar 71 of the photovoltaic cell string 7 .

[0052] When multiple photovoltaic modules need to be connected in series, the positive connector 5 is connected to the negative connector 6 of another photovoltaic module.

[0053] In some embodiments, the number of plug-in replaceable diode photovoltaic junction boxes in a single photovoltaic component is one, the positive connector 5 is connected to the positive conductive terminal 22 through a cable, and the negative connector 6 is connected to the negative conductive terminal 21 through a cable, so that the positive connector 5 and the negative connector 6 can be simultaneously connected to the same plug-in replaceable diode photovoltaic junction box.

[0054] The implementation principle of the embodiment of the present application is:

[0055] When the diode module 1 needs to be replaced, the main body 11 can be pulled out of the mounting hole 31 by force. When installing the diode module 1, the recessed portion 112 is aligned with the raised portion 32 and the main body 11 is inserted into the mounting hole 31, so that the positive metal pin 12 can be inserted into the diode electrode socket 211 of the negative conductive terminal 21, and the negative metal pin 13 can be inserted into the diode electrode socket 211 of the positive conductive terminal 22. The operation is simple and convenient.

[0056] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plug-in replaceable diode photovoltaic junction box, characterized in that: The plug-in replaceable diode photovoltaic junction box comprises: A diode module (1) comprises a main body (11), a positive metal pin (12), a negative metal pin (13) and a diode (14), wherein the positive metal pin (12) and the negative metal pin (13) are both connected to the main body (11), the diode (14) is arranged on the main body (11), and the P pole of the diode (14) is electrically connected to the positive metal pin (12), and the N pole of the diode (14) is electrically connected to the negative metal pin (13); A box body (2) is provided with a negative conductive terminal (21) and a positive conductive terminal (22), wherein the positive conductive terminal (22) and the negative conductive terminal (21) both include a diode electrode socket (211) and a connecting piece (212), and the diode electrode socket (211) is connected to the connecting piece (212); and A cover body (3) covering the box body (2), wherein the cover body (3) is provided with a mounting hole (31); The mounting hole (31) is configured to allow the positive metal pin (12) and the negative metal pin (13) to be inserted, so that the positive metal pin (12) is inserted into the diode electrode socket (211) of the negative conductive terminal (21), and the negative metal pin (13) is inserted into the diode electrode socket (211) of the positive conductive terminal (22), and the peripheral wall of the positive metal pin (12) and the peripheral wall of the negative metal pin (13) are respectively abutted against the inner peripheral wall of the corresponding diode electrode socket (211), so that the diode (14) is electrically connected to the negative conductive terminal (21) and the positive conductive terminal (22) at the same time.

2. The pluggable replaceable diode photovoltaic junction box according to claim 1, characterized in that: An elastic ring (4) is sleeved on the peripheral wall of the main body (11), and the outer peripheral wall of the elastic ring (4) is in contact with the inner peripheral wall of the mounting hole (31).

3. The pluggable replaceable diode photovoltaic junction box according to claim 2, characterized in that: The peripheral wall of the main body (11) is provided with a mounting annular groove (111) along its circumference, and the elastic ring (4) is embedded in the mounting annular groove (111).

4. The pluggable replaceable diode photovoltaic junction box according to claim 1, characterized in that: The box body (2) is provided with an embedding groove (23), and the diode electrode socket (211) is inserted into the embedding groove (23).

5. The pluggable replaceable diode photovoltaic junction box according to claim 1, characterized in that: The cover body (3) is provided with a protruding portion (32), and the main body (11) is provided with a recessed portion (112) for the protruding portion (32) to be inserted.

6. The pluggable replaceable diode photovoltaic junction box according to claim 1, characterized in that: The connection piece (212) is provided with a connection hole (2121), and the connection hole (2121) is configured to allow the busbar (71) of the photovoltaic cell string (7) to be inserted.

7. The pluggable replaceable diode photovoltaic junction box according to claim 1, characterized in that: The negative electrode conductive terminal (21) and / or the positive electrode conductive terminal (22) are provided with an output cable (8).

8. The pluggable replaceable diode photovoltaic junction box according to claim 1, characterized in that: The main body (11) is provided with a matching portion (113), and the matching portion (113) is configured to cooperate with a disassembly tool to facilitate plugging and unplugging of the main body (11).

9. A photovoltaic module, characterized in that: The invention comprises a positive connector (5), a negative connector (6), a photovoltaic cell string (7) and a plug-in replaceable diode photovoltaic junction box as claimed in any one of claims 1 to 8, wherein the positive connector (5) is electrically connected to the connecting piece (212) of the positive conductive terminal (22), the negative connector (6) is electrically connected to the connecting piece (212) of the negative conductive terminal (21), the positive electrode of the photovoltaic cell string (7) is electrically connected to the connecting piece (212) of the positive conductive terminal (22), and the negative electrode of the photovoltaic cell string (7) is electrically connected to the connecting piece (212) of the negative conductive terminal (21).

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