Photovoltaic panel junction box

Abstract

The utility model relates to the field of photovoltaic accessories, and provides a photovoltaic panel junction box which comprises a box body, two metal supports, two metal connecting pieces, an isolation piece, a diode and a mounting shell. The box body is provided with a plugging port, the two metal supports are arranged in the box body in a spaced mode, one end of each metal support extends out of the plugging port, the isolation piece is installed on the plugging port, one end of the isolation piece abuts against the metal supports, and the two ends of the diode are connected with the two metal connecting pieces respectively. The two metal connecting pieces are arranged in the mounting shell, are arranged in one-to-one correspondence with the metal brackets and are arranged in the mounting shell; the mounting shell is detachably connected with the box body, and when the mounting shell is connected with the box body, the metal connecting piece extends into the plugging port to be connected with the metal support, so that the problem that the replacement cost is relatively high when the diode is damaged can be solved.

Description

Technical Field

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

[0002] In solar photovoltaic panels, the photovoltaic panel junction box is an important part of the solar cell assembly. The photovoltaic panel junction box includes an integrated photovoltaic panel junction box and a split photovoltaic panel junction box. When in use, both need to be fixed on the photovoltaic panel assembly and sealed and fixed by injecting sealant. The photovoltaic panel junction box contains a core component, the diode, which is an electronic component that conducts unidirectional current. The diode is the part of the entire component that is most likely to heat up, and therefore is also easily damaged.

[0003] In some photovoltaic panel junction boxes, the diode is fixed inside the junction box. Since the interior is cast with sealant, it is difficult to replace the diode when it is damaged. The entire photovoltaic panel junction box needs to be replaced, resulting in high replacement costs when the diode is damaged.

[0004] Therefore, how to reduce the replacement cost when the diode is damaged is a problem that needs to be solved. Utility Model Content

[0005] In order to reduce the replacement cost of a damaged diode when a photovoltaic panel junction box is used, the present application provides a photovoltaic panel junction box.

[0006] The present application provides a photovoltaic panel junction box, which adopts the following technical solution:

[0007] A photovoltaic panel junction box comprises a box body, two metal brackets, two metal connectors, an isolating member, a diode and a mounting shell; the box body is provided with a plug-in interface, two metal brackets are arranged in the box body at intervals, and one end of each metal bracket extends out of the plug-in interface, the isolating member is installed in the plug-in interface and one end abuts against the metal bracket, the two ends of the diode are respectively connected to the two metal connectors and installed in the mounting shell, and the two metal connectors are arranged in a one-to-one correspondence with the metal brackets; the mounting shell is detachably connected to the box body, and when the mounting shell is connected to the box body, the metal connector extends into the plug-in interface and is connected to the metal bracket.

[0008] By adopting the above technical solution, the metal bracket and the bracket connecting frame are used to achieve electrical conduction at both ends of the diode, and the isolation piece is used to isolate the inside and outside of the box body, so that when glue is poured into the box body, the glue will not flow out from the plug-in interface; during installation, the two metal connectors are connected to the two ends of the diode, installed in the installation shell, and then installed between the installation shell and the box body. Since the installation shell and the box body are detachably connected, when the diode is damaged, only the installation shell needs to be removed and the diode needs to be replaced without disassembling the box body, thereby reducing the replacement cost of the diode during damage.

[0009] Optionally, the metal connector is provided with an insertion port, and when the mounting shell is installed on the box body, the metal bracket is inserted into the insertion port and engaged with the metal connector.

[0010] By adopting the above technical solution, not only can the metal connector and the metal bracket be connected to form electrical conduction by means of snap-fitting, but the metal connector and the metal bracket can also be conveniently connected to ensure the connection stability between the two.

[0011] Optionally, the metal connectors are each provided with abutment grooves, and two ends of the diode extend into the abutment grooves to abut against the wall surfaces of the metal connectors corresponding to the abutment grooves.

[0012] By adopting the above technical solution, electrical conduction between the diode and the metal connecting piece can be easily achieved, and the diode can also be fixed.

[0013] Optionally, the mounting shell is provided with snap-fit ​​strips at intervals along the circumference of the inner wall surface, and the metal connecting piece is inserted into the mounting shell and snap-fitted with the snap-fit ​​strips.

[0014] By adopting the above technical solution, the metal connector can be conveniently fixed, that is, the diode can be fixed, and the diode can also be conveniently taken out of the installation shell during disassembly.

[0015] Optionally, both sides of the mounting shell are connected with connecting ears, each of the connecting ears is provided with a card interface, and both sides of the box body are connected with card blocks. When the mounting shell is installed on the box body, the card blocks are carded to the card interfaces.

[0016] By adopting the above technical solution, through the setting of the card block and the card interface, the installation between the installation shell and the box body can be quickly realized. When the installation shell needs to be removed, it is only necessary to break the connecting ear to the side away from the box body to achieve the separation between the installation shell and the box body.

[0017] Optionally, the clamping block gradually thickens from a side close to the plug interface to a side away from the plug interface; and an end of the connecting ear away from the mounting shell is cut to form a guide portion.

[0018] By adopting the above technical solution, the guide part cooperates with the clamping block to play a guiding role, and the installation shell can slide along the clamping block more smoothly through the guide part, so that the clamping block enters the card interface and clamps.

[0019] Optionally, the mounting shell is provided with a positioning groove, and a positioning block is connected to a side of the isolating member facing away from the box body. When the mounting shell is mounted on the box body, the positioning block is inserted into the positioning groove.

[0020] By adopting the above technical solution, the mounting shell and the box body are better positioned, and the relative movement between the mounting shell and the box body can be limited, so that the connection between the mounting shell and the box body can be more stable.

[0021] Optionally, a fixing column is connected to the box body, a distance is left between the fixing column and the inner wall surface of the box body where the plug interface is opened, the plug interface passes through one side of the box body, and the isolation member is connected to a fixing rod; when the isolation member is installed on the box body, the isolation member is inserted along the plug interface, and the fixing rod is inserted between the fixing column and the box body.

[0022] By adopting the above technical solution, the connection between the isolating member and the box body is achieved through the fixing of the fixing rod, and the isolating member and the box body can be conveniently fixed.

[0023] Optionally, at least two of the fixing columns and the fixing rods are provided, the fixing columns are arranged at intervals along the width direction of the box body, the fixing rods are arranged at intervals along the width direction of the isolation member, and the fixing columns and the fixing rods are arranged in one-to-one correspondence.

[0024] By adopting the above technical solution, the connection between the isolating element and the box body is made more stable, so that the glue can be better prevented from flowing out of the plug-in interface during glue filling.

[0025] Optionally, the diode is fixed to the mounting shell by means of glue filling.

[0026] By adopting the above technical solution, the diode and the mounting shell can be connected more stably, and a better waterproof effect can also be achieved.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] 1. The metal bracket and the bracket connecting frame are used to achieve electrical conduction at both ends of the diode, and the isolation piece is used to isolate the inside and outside of the box body, so that when the glue is poured into the box body, the glue will not flow out from the plug-in interface; during installation, the two metal connectors are connected to the two ends of the diode, installed in the installation shell, and then installed between the installation shell and the box body. Since the installation shell and the box body are detachably connected, when the diode is damaged, only the installation shell needs to be removed and the diode can be replaced without disassembling the box body, thereby reducing the replacement cost of the diode during damage;

[0029] 2. The clamping method can not only connect the metal connector and the metal bracket to form electrical conduction, but also conveniently connect the metal connector and the metal bracket to ensure the connection stability between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an exploded schematic diagram of a photovoltaic panel junction box according to an embodiment of the present application;

[0031] Figure 2 It is an exploded schematic diagram of one of the boxes in the photovoltaic panel junction box of the embodiment of the present application;

[0032] Figure 3 It is a cross-sectional schematic diagram showing the cooperation between the metal frame and the metal connector in the photovoltaic panel junction box of the embodiment of the present application;

[0033] Figure 4 It is a cross-sectional schematic diagram showing the cooperation between the metal connector and the mounting shell in the photovoltaic panel junction box of the embodiment of the present application;

[0034] Figure 5 It is a structural schematic diagram of the cooperation between the isolation member, the mounting shell and the box body in the photovoltaic panel junction box of the embodiment of the present application.

[0035] Explanation of the accompanying drawings: 1. Box body; 2. Cover plate; 3. Diode; 4. Mounting shell; 5. Connecting ear; 6. Card interface; 7. Card block; 8. Guide part; 9. Insertion interface; 10. Metal bracket; 11. Metal connecting piece; 12. Mounting column; 13. Abutment groove; 14. Insertion port; 15. Card strip; 16. Isolator; 17. Positioning groove; 18. Positioning block; 19. Fixing column; 20. Fixing rod. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-5 This application is described in further detail.

[0037] The present application embodiment discloses a photovoltaic panel junction box. Figure 1The photovoltaic panel junction box includes a box body 1, a cover plate 2, a diode 3 and a mounting shell 4. The box body 1, the cover plate 2 and the mounting shell 4 are all made of plastic. The cover plate 2 is used to cover the box body 1. In this embodiment, the cover plate 2 and the box body 1 are fixed by snapping. The box body 1 is provided with a plug-in interface 9 for achieving electrical conduction between the diode 3 and the inside of the box body 1; the mounting shell 4 is used to install the diode 3. The box body 1 and the mounting shell 4 are detachably connected, so that when the diode 3 is damaged, the mounting shell 4 can be directly disassembled and replaced. The box body 1 does not need to be disassembled and replaced, which can reduce the replacement cost of the diode 3 when it is damaged, and the cost includes labor cost, money cost, etc.

[0038] Reference Figure 2 In some embodiments, both sides of the mounting shell 4 are connected with connecting ears 5, which are used to connect with the box body 1. The connecting ears 5 are provided with card interfaces 6. Both sides of the box body 1 are connected with card blocks 7. When the mounting shell 4 is mounted on the box body 1, the card blocks 7 are carded with the card interfaces 6, which means that the card blocks 7 are inserted into the card interfaces 6 and carded with the connecting ears 5. This makes it easy to fix the mounting shell 4 and the box body 1, and when disassembling, since the mounting shell 4 is made of plastic and has elastic deformation ability, it is only necessary to pry the connecting ears 5 away from the box body 1 to remove the mounting shell 4 from the box body 1. In other embodiments, the mounting shell 4 and the box body 1 can be detachably connected by screwing or other methods.

[0039] In some embodiments, the clamping block 7 gradually thickens from the side close to the plug interface 9 to the side away from the plug interface 9. This allows the connecting ear 5 to be guided along the direction of the thickness increase of the clamping piece, so that the connecting ear 5 can move more smoothly along the clamping piece, allowing the clamping piece to be inserted into the clamping interface 6. The end of the connecting ear 5 away from the mounting shell 4 is cut to form a guide portion 8. The guide portion 8 guides the connecting ear 5 when it slides along the clamping piece, allowing the connecting ear 5 to move more smoothly along the clamping piece, allowing the clamping piece to enter the clamping interface 6. The clamping block 7 and the guide portion 8 can cooperate with each other to achieve mutual guidance, so that the clamping block 7 can be inserted into the clamping interface 6 more smoothly and accurately.

[0040] Continue to refer to Figure 2 In this embodiment, the diode 3 and the mounting shell 4 are detachably connected. When the diode 3 needs to be replaced, only the diode 3 can be removed for replacement. In some embodiments, the diode 3 and the mounting shell 4 are fixed by glue pouring. The glue pouring is interpreted as pouring sealant. The glue pouring can also play a waterproof role. Even if the diode 3 and the mounting shell 4 are fixed, when the diode 3 is replaced, the mounting shell 4 is directly replaced. Replacing only the mounting shell 4 can also save costs.

[0041] The photovoltaic panel junction box also includes two metal brackets 10 and two metal connectors 11. The metal connectors 11 and the metal brackets 10 are arranged one by one. The two metal brackets 10 are arranged in the box body 1 at intervals, and one end of each metal bracket 10 extends out of the plug interface 9. The metal bracket 10 extends out of the plug interface 9 to connect with the metal connector 11 to achieve electrical conduction with the diode 3. In this embodiment, a mounting column 12 is arranged in the box body 1. One metal bracket 10 corresponds to multiple mounting columns 12. The number of mounting columns 12 is set according to the size of the metal bracket 10. The metal bracket 10 is plugged into the mounting column 12 to achieve the fixation of the metal bracket 10.

[0042] The two ends of the diode 3 are respectively connected to two metal connectors 11 and installed in the mounting shell 4. The metal connector 11 is used to fix the diode 3 in the mounting shell 4. When the mounting shell 4 is connected to the box body 1, the metal connector 11 extends into the plug-in port 9 and connects with the metal bracket 10 to achieve electrical conduction between the metal connector 11 and the metal bracket 10. In some embodiments, the metal connectors 11 are provided with abutment grooves 13, and the diode 3 is placed in the metal connector 11. At this time, the two ends of the diode 3 extend into the abutment grooves 13 and abut against the wall of the metal connector 11 corresponding to the abutment grooves 13, so that the diode 3 can be electrically connected to the metal connector 11 and the diode 3 can be fixed.

[0043] In some embodiments, the metal connector 11 is provided with an insertion port 14 , and the insertion port 14 is used to connect with the metal bracket 10 , so that the metal connector 11 can be stably connected with the metal bracket 10 .

[0044] Reference Figure 3 When the mounting shell 4 is installed on the box body 1, the metal bracket 10 is inserted into the insertion port 14 and snapped into the metal connector 11. The snapping method can not only achieve electrical conduction between the metal bracket 10 and the metal connector 11, but also fix the metal connector 11 on the metal bracket 10, so that the diode 3 can be fixed more stably, and the connection between the metal connector 11 and the metal bracket 10 can be more stable, thereby achieving more stable electrical conduction.

[0045] Reference Figure 4 In some embodiments, the mounting shell 4 is provided with snap-fit ​​strips 15 at intervals along the inner wall surface. In this embodiment, two snap-fit ​​strips 15 are provided at intervals on the four inner side walls of the mounting shell 4. In other embodiments, the number of snap-fit ​​strips 15 can be set according to actual conditions. The metal connector 11 is inserted into the mounting shell 4 and snap-fitted with the snap-fit ​​strips 15, so that the metal connector 11 can be fixed to the mounting shell 4, and the diode 3 can also be fixed in the mounting shell 4. When the diode 3 needs to be removed, the metal connector 11 only needs to be pulled out from the mounting shell 4.

[0046] Reference Figure 5 The photovoltaic panel junction box also includes an isolating member 16, which is installed on the plug-in port 9 and one end of which abuts against the metal bracket 10. The lower end of the isolating member 16 abuts against the metal bracket 10, and can seal the plug-in port 9, so that when the glue is poured, the glue is prevented from flowing out of the plug-in port 9 as much as possible. In some embodiments, the mounting shell 4 is provided with a positioning groove 17, and a positioning block 18 is connected to the side of the isolating member 16 facing away from the box body 1. In this embodiment, the positioning block 18 and the isolating member 16 are integrally formed. When the mounting shell 4 is mounted on the box body 1, the positioning block 18 is inserted into the positioning groove 17 to position the mounting shell 4 and the box body 1, so that the metal connector 11 can be more accurately inserted into the metal frame, making the connection between the mounting shell 4 and the box body 1 more stable.

[0047] In some embodiments, a fixing column 19 is connected inside the box body 1, and a gap is left between the fixing column 19 and the inner wall surface of the box body 1 where the plug-in port 9 is opened. The plug-in port 9 passes through the upper side of the box body 1, and the isolating member 16 is connected to a fixing rod 20. In this embodiment, the fixing rod 20 and the isolating member 16 are integrally formed. When the isolating member 16 is installed in the box body 1, the isolating member 16 is inserted along the plug-in port 9, and the fixing rod 20 is inserted between the fixing column 19 and the box body 1, and is mutually engaged with the box body 1 and the fixing column 19, so that the isolating member 16 can be conveniently and stably fixed.

[0048] In some embodiments, at least two fixing columns 19 and fixing rods 20 are provided. In this embodiment, two fixing columns 19 and two fixing rods 20 are provided. The fixing columns 19 are respectively provided on two opposite walls of the box body 1, and the fixing rods 20 are provided at both ends of the isolation member 16, so that the isolation member 16 can be fixed more stably. The fixing columns 19 are arranged at intervals along the width direction of the box body 1, and the fixing rods 20 are arranged at intervals along the width direction of the isolation member 16. The fixing columns 19 and the fixing rods 20 are arranged one by one. In other embodiments, multiple fixing columns 19 can be arranged at intervals along the width direction of the box body 1, such as fixing columns 19 are also provided between metal connectors 11 and other positions.

[0049] The implementation principle of a photovoltaic panel junction box in an embodiment of the present application is as follows: the metal bracket 10 and the bracket connecting frame are used to achieve electrical conduction at both ends of the diode 3, and the isolation piece 16 is used to isolate the inside and outside of the box body 1, so that when glue is poured into the box body 1, the glue will not flow out from the plug interface 9; during installation, the two metal connectors 11 are connected to the two ends of the diode 3, installed in the installation shell 4, and then installed between the installation shell 4 and the box body 1. Since the installation shell 4 and the box body 1 are detachably connected, when the diode 3 is damaged, it is only necessary to remove the installation shell 4 and replace the diode 3 without disassembling the box body 1, thereby reducing the replacement cost of the diode 3 during damage.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic panel junction box, characterized in that: The invention comprises a box body (1), two metal brackets (10), two metal connecting pieces (11), an isolating piece (16), a diode (3) and a mounting shell (4); the box body (1) is provided with a plug-in interface (9); the two metal brackets (10) are arranged in the box body (1) at intervals, and one end of each of the metal brackets (10) extends out of the plug-in interface (9); the isolating piece (16) is mounted on the plug-in interface (9) and one end abuts against the metal bracket (10); the two ends of the diode (3) are respectively connected to the two metal connecting pieces (11) and are mounted in the mounting shell (4); the two metal connecting pieces (11) and the metal brackets (10) are arranged in a one-to-one correspondence; the mounting shell (4) is detachably connected to the box body (1); when the mounting shell (4) is connected to the box body (1), the metal connecting piece (11) extends into the plug-in interface (9) and is connected to the metal bracket (10).

2. A photovoltaic panel junction box according to claim 1, characterized in that: The metal connecting piece (11) is provided with an insertion opening (14), and when the mounting shell (4) is mounted on the box body (1), the metal bracket (10) is inserted into the insertion opening (14) and is engaged with the metal connecting piece (11).

3. A photovoltaic panel junction box according to claim 1, characterized in that: The metal connectors (11) are each provided with abutment grooves (13), and two ends of the diode (3) extend into the abutment grooves (13) to abut against the wall surfaces of the metal connectors (11) corresponding to the abutment grooves (13).

4. A photovoltaic panel junction box according to claim 1, characterized in that: The mounting shell (4) is provided with clamping strips (15) at intervals along the circumference of the inner wall surface, and the metal connecting piece (11) is inserted into the mounting shell (4) and is clamped with the clamping strips (15).

5. The photovoltaic panel junction box according to claim 1, characterized in that: Both sides of the installation shell (4) are connected to connecting ears (5), and both connecting ears (5) are provided with card interfaces (6). Both sides of the box body (1) are connected to card blocks (7), and when the installation shell (4) is installed on the box body (1), the card blocks (7) are card-connected to the card interfaces (6).

6. A photovoltaic panel junction box according to claim 5, characterized in that: The clamping block (7) gradually thickens from a side close to the plug interface (9) to a side away from the plug interface (9); an end of the connecting ear (5) away from the mounting shell (4) is cut to form a guide portion (8).

7. A photovoltaic panel junction box according to claim 1, characterized in that: The mounting shell (4) is provided with a positioning groove (17), and a positioning block (18) is connected to a side of the isolation member (16) facing away from the box body (1); when the mounting shell (4) is mounted on the box body (1), the positioning block (18) is inserted into the positioning groove (17).

8. The photovoltaic panel junction box according to claim 1, characterized in that: A fixing column (19) is connected inside the box body (1), and a distance is left between the fixing column (19) and the inner wall surface of the box body (1) on which the plug interface (9) is opened. The plug interface (9) passes through one side of the box body (1), and the isolation member (16) is connected to a fixing rod (20); when the isolation member (16) is installed on the box body (1), the isolation member (16) is inserted along the plug interface (9), and the fixing rod (20) is inserted between the fixing column (19) and the box body (1).

9. A photovoltaic panel junction box according to claim 8, characterized in that: At least two of the fixing columns (19) and the fixing rods (20) are provided. The fixing columns (19) are arranged at intervals along the width direction of the box body (1), and the fixing rods (20) are arranged at intervals along the width direction of the isolation member (16). The fixing columns (19) and the fixing rods (20) are arranged in a one-to-one correspondence.

10. A photovoltaic panel junction box according to claim 1 or 5, characterized in that: The diode (3) and the mounting shell (4) are fixed by means of glue injection.

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