Photovoltaic power semiconductor module and photovoltaic junction box

Abstract

This utility model discloses a photovoltaic power semiconductor module and a photovoltaic junction box. The photovoltaic power semiconductor module includes a first conductor, a second conductor, and a cable fixing part. An insulating gap is provided between the first and second conductors, and the first and second conductors are arranged sequentially along a first direction. The cable fixing part is connected to one of the first and second conductors, and the cable fixing part and its connected conductor are arranged sequentially along a second direction, which is perpendicular to the first direction. The cable fixing part is configured to be electrically connected to a cable. This utility model can save on the production cost of photovoltaic power semiconductor modules and meet various application requirements.

Description

Technical Field

[0001] This utility model relates to the field of solar photovoltaic technology, and in particular to a photovoltaic power semiconductor module and a photovoltaic junction box. Background Technology

[0002] The photovoltaic power semiconductor module is a crucial component of a photovoltaic system, primarily used to improve the reliability and efficiency of the photovoltaic system. When a cell in a photovoltaic string experiences current mismatch due to shading, damage, or performance degradation, the bypass module provides a low-resistance bypass path for that cell, allowing current to flow around the faulty cell. This reduces hot spot effects, protects other normally functioning cells from damage, and maintains the overall power generation efficiency of the photovoltaic power semiconductor module.

[0003] Currently, photovoltaic (PV) power semiconductor modules mostly use three-part junction boxes, with each junction box containing a set of PV power semiconductor modules. The cables are horizontally connected to the PV power semiconductor modules on the left and right sides. However, in some PV power semiconductor modules, it is necessary to set the cables vertically to the junction box; moreover, in some special application scenarios, it is necessary to embed some fixing materials or adhesives at the bottom of the junction box, which requires the junction box body to be recessed. In this case, the existing structure of PV power semiconductor modules and junction boxes cannot meet the application requirements.

[0004] The above background information is provided only to assist in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above information was disclosed before the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this invention is to provide a photovoltaic power semiconductor module and a photovoltaic junction box, which can save the production cost of photovoltaic power semiconductor modules and meet various usage needs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A photovoltaic power semiconductor module includes a first conductor, a second conductor, and a cable fixing part, wherein an insulating gap is provided between the first conductor and the second conductor, and the first conductor and the second conductor are arranged sequentially along a first direction;

[0008] The cable fixing part is connected to one of the first conductor and the second conductor, and the cable fixing part and the conductor to which it is connected are arranged sequentially along a second direction, which is perpendicular to the first direction;

[0009] The cable fixing part is configured to be electrically connected to the cable.

[0010] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, a first gap is provided between the first conductor and the second conductor.

[0011] The cable fixing part is connected to one of the first conductor and the second conductor, and the cable fixing part extends toward the other conductor;

[0012] The first gap and the cable fixing part are located on opposite sides of the photovoltaic power semiconductor module.

[0013] Furthermore, following any one or a combination of the aforementioned technical solutions, when the two photovoltaic power semiconductor modules are arranged along the second direction, the first gap is configured to accommodate the cable fixing part.

[0014] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the device further includes a diode, wherein a first gap is provided between the first conductor and the second conductor, and the diode is disposed within the first gap and electrically connected to the first conductor and the second conductor respectively.

[0015] And / or,

[0016] The first conductor, the second conductor, and the cable fixing part are all stamped parts;

[0017] And / or,

[0018] The cable fixing part and the conductor connected to it are integrally formed.

[0019] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the first conductor, the second conductor, and the cable fixing part are all planar / plate-shaped, and a height difference is provided between the plane where the cable fixing part is located and the plane where the conductor to which it is connected is located;

[0020] The cable fixing part is connected to one of the first conductor and the second conductor through a bending part.

[0021] Furthermore, following any one or a combination of the aforementioned technical solutions, the photovoltaic power semiconductor module is disposed within a photovoltaic junction box, and the plane of the cable fixing part is closer to the bottom of the photovoltaic junction box than the plane of the conductor to which it is connected.

[0022] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the first conductor is provided with a first through hole and a first welding area, the first through hole being used for the first busbar to pass through, and the first welding area being used for welding connection with the first busbar.

[0023] The second conductor is provided with a second through hole and a second welding area. The second through hole is used for the second busbar to pass through, and the second welding area is used for welding connection with the second busbar.

[0024] Furthermore, following any one or a combination of the aforementioned technical solutions, the system further includes a first detection area and a second detection area, wherein the first detection area is disposed on the first conductor near the first through hole, and the second detection area is disposed on the second conductor near the second through hole.

[0025] Furthermore, based on any or a combination of the aforementioned technical solutions, the minimum distance between the first detection area and the first through hole is not less than 10 mm, and the minimum distance between the second detection area and the second through hole is not less than 10 mm;

[0026] And / or,

[0027] The area of ​​the first detection area is not less than 8*8mm 2 The area of ​​the second detection area is not less than 8*8mm. 2 .

[0028] According to another aspect of the present invention, a photovoltaic junction box is provided, including a cover, a box body, and a photovoltaic power semiconductor module as described in any or a combination of the above technical solutions.

[0029] The cover and the box cooperate to form a receiving cavity, and the photovoltaic power semiconductor module is disposed in the receiving cavity.

[0030] The beneficial effects of the technical solution provided by this utility model are as follows:

[0031] a. This utility model enables the cable to emerge vertically from the center of the photovoltaic junction box by setting a cable fixing part on the photovoltaic power semiconductor module that is perpendicular to the first conductor and the second conductor, thereby meeting various usage requirements;

[0032] b. By setting the first gap and the cable fixing part on both sides of the width direction of the photovoltaic power semiconductor module and forming a complementary structure, the first gap of one photovoltaic power semiconductor module can just accommodate the cable fixing part of the adjacent photovoltaic power semiconductor module. This not only improves the production efficiency of the photovoltaic power semiconductor module and saves materials, but also effectively reduces the production cost of the photovoltaic power semiconductor module. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A first-angle perspective view of a photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0035] Figure 2 A front view schematic diagram of a photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0036] Figure 3 A second-angle perspective view of a photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the stamping arrangement of a photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0038] Figure 5 A first-angle perspective view of a photovoltaic junction box provided as an exemplary embodiment of the present invention;

[0039] Figure 6 This is a second-angle perspective view of a photovoltaic junction box provided as an exemplary embodiment of the present invention.

[0040] The reference numerals in the attached drawings include: 1-first conductor, 11-first through hole, 12-first welding area, 13-first extension, 14-first detection area, 2-second conductor, 21-second through hole, 22-second welding area, 23-second extension, 24-second detection area, 3-cable fixing part, 31-bending part, 311-first end, 312-second end, 4-diode, 5-first gap, 100-cover, 200-box, 201-potting cavity, 202-recess, 203-bottom wall, 204-connecting rib, 205-leaking cavity, 206-partition, 6-cable, 8-sealant. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0043] In one embodiment of this utility model, a photovoltaic power semiconductor module is provided, such as... Figures 1 to 4As shown, the photovoltaic power semiconductor module includes a first conductor 1, a second conductor 2, and a cable fixing part 3. An insulating gap is provided between the first conductor 1 and the second conductor 2, and the first conductor 1 and the second conductor 2 are arranged sequentially along a first direction (the length direction of the photovoltaic power semiconductor module). The cable fixing part 3 is connected to one of the first conductor 1 and the second conductor 2, and the cable fixing part 3 and the connected conductor are arranged sequentially along a second direction (the width direction of the photovoltaic power semiconductor module) perpendicular to the first direction. The cable fixing part 3 is configured to be electrically connected to a cable 6. By providing a cable fixing part 3 that extends perpendicularly to the first conductor 1 and the second conductor 2 on the photovoltaic power semiconductor module, the cable 6 can be vertically exited from the center of the photovoltaic junction box.

[0044] In this embodiment, as Figure 1 and Figure 3 As shown, the photovoltaic power semiconductor module further includes a diode 4. A first gap 5 is provided between the first conductor 1 and the second conductor 2. The diode 4 is an axial diode, which is disposed within the first gap 5. One end of the diode 4 is electrically connected to the first conductor 1, and the other end of the diode 4 is electrically connected to the second conductor 2. Relative to the first gap 5, the first conductor 1 is provided with a first extension portion 13 extending in the direction of the second conductor 2; the second conductor 2 is provided with a second extension portion 23 extending in the direction of the first conductor 1.

[0045] The insulating gap between the first conductor 1 and the second conductor 2, distinct from the first gap 5, is the second gap, indicating that the width of the first gap 5 is greater than the width of the second gap. In this embodiment, the cable fixing part 3 is connected to the first conductor 1, and the two are an integral structure. The first gap 5 and the cable fixing part 3 are disposed on opposite sides of the photovoltaic power semiconductor module. When two photovoltaic power semiconductor modules are arranged along the second direction, the first gap 5 is configured to accommodate the cable fixing part 3.

[0046] like Figure 4 As shown, the first conductor 1, the second conductor 2, and the cable fixing part 3 are all stamped parts. By setting the first gap 5 and the cable fixing part 3 on both sides of the width direction of the photovoltaic power semiconductor module and making them complementary structures, during the process of stamping multiple photovoltaic power semiconductor modules in a second direction, the excess structure in one photovoltaic power semiconductor module used to stamp out the first gap 5 is exactly the cable fixing part 3 in the adjacent photovoltaic power semiconductor module. In this way, not only can the production efficiency of photovoltaic power semiconductor modules be improved and materials saved, but the production cost of photovoltaic power semiconductor modules can also be effectively reduced.

[0047] The first conductor 1 is provided with a first through hole 11 and a first welding area 12. The first through hole 11 is used for the first busbar to pass through, and the first welding area 12 is used for welding connection with the first busbar. The second conductor 2 is provided with a second through hole 21 and a second welding area 22. The second through hole 21 is used for the second busbar to pass through, and the second welding area 22 is used for welding connection with the second busbar.

[0048] The first conductor 1 further includes a first detection area 14, and the second conductor 2 further includes a second detection area 24. The first detection area 14 is disposed on the first conductor 1 near the first through hole 11, and the second detection area 24 is disposed on the second conductor 2 near the second through hole 21.

[0049] Preferably, the minimum distance between the first detection area 14 and the first through hole 11 is not less than 10 mm, and the minimum distance between the second detection area 24 and the second through hole 21 is not less than 10 mm. The area of ​​the first detection area 14 is not less than 8*8 mm. 2 The area of ​​the second detection area 24 is not less than 8*8mm. 2 By setting a fixed first detection area 14 and a second detection area 24, external instruments can be disconnected from the first conductor 1 and the second conductor 2 to perform circuit testing (such as EL testing), thereby improving the reliability of photovoltaic power semiconductor module components.

[0050] In one embodiment of this utility model, the first conductor 1, the second conductor 2, and the cable fixing part 3 are all planar / plate-shaped, and there is a height difference between the plane of the cable fixing part 3 and the plane of the conductor it is connected to; the cable fixing part 3 is connected to one of the first conductor 1 and the second conductor 2 through a bending part 31. The photovoltaic power semiconductor module is disposed in a photovoltaic junction box, and the plane of the cable fixing part 3 is closer to / farther away from the bottom of the photovoltaic junction box relative to the plane of the conductor it is connected to, to meet the corresponding usage requirements.

[0051] like Figure 1 and Figure 2 As shown, the cable fixing part 3 is connected to the first conductor 1 through the bending part 31. Specifically, the first end 311 of the bending part 31 is connected to the first conductor 1, and the second end 312 of the bending part 31 is connected to the cable fixing part 3. The second end 312 is lower than the first end 311 in a third direction. The bending part 31 can be tilted or bent, so that the height of the cable fixing part 3 is lower than the height of the first conductor 1.

[0052] In one embodiment of this utility model, a photovoltaic junction box is provided, such as... Figure 5 and Figure 6 As shown, it includes a cover 100, a box 200, and a photovoltaic power semiconductor module as described in any of the above embodiments; the cover 100 and the box 200 cooperate to form a receiving cavity, and the photovoltaic power semiconductor module is disposed in the receiving cavity. The length direction of the photovoltaic power semiconductor module is arranged along the length direction of the photovoltaic junction box. Therefore, the cable connected to the photovoltaic power semiconductor module is led out vertically from the middle of the photovoltaic junction box, rather than conventionally led out horizontally from the side, which can meet the usage needs of more application scenarios.

[0053] A partition 206 is provided within the receiving cavity, dividing it into a potting cavity 201 and a leakage cavity 205. The photovoltaic power semiconductor module is disposed within the potting cavity 201, and the leakage cavity 205 is configured to accommodate sealant, potting resin, etc., overflowing from the potting cavity 201. Optionally, a leakage groove communicating between the potting cavity 201 and the leakage cavity 205 is provided at the upper end of the partition 206.

[0054] In this embodiment, the housing 200 is provided with a recess 202, which is located on the bottom of the housing 200 away from the receiving cavity. The recess 202 is configured to accommodate glass, sealant, etc. The recess 202 is formed by the bottom wall 203 of the housing 200 recessed towards the cover 100 (third direction), thereby providing space at the bottom of the photovoltaic junction box for filling / placing solid materials. The recess 202 contains several connecting ribs 204 connected to the bottom wall 203. Correspondingly, in this embodiment, the cable fixing part 3 in the photovoltaic power semiconductor module is closer to the bottom wall 203 of the photovoltaic junction box than the first conductor 1 and the second conductor 2.

[0055] It should be noted that the inventive concept of the photovoltaic junction box embodiment is based on the same inventive concept as the photovoltaic power semiconductor module embodiment described above. By reference, all relevant content of the photovoltaic power semiconductor module embodiment is incorporated into the photovoltaic junction box embodiment.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A photovoltaic power semiconductor module, characterized by It includes a first conductor (1), a second conductor (2) and a cable fixing part (3), wherein an insulating gap is provided between the first conductor (1) and the second conductor (2), and the first conductor (1) and the second conductor (2) are arranged sequentially along a first direction; The cable fixing part (3) is connected to one of the first conductor (1) and the second conductor (2), and the cable fixing part (3) and the conductor it is connected to are arranged sequentially along a second direction, which is perpendicular to the first direction; The cable fixing part (3) is configured to be electrically connected to the cable.

2. Photovoltaic power semiconductor module according to claim 1, characterized in that A first gap (5) is provided between the first conductor (1) and the second conductor (2); The cable fixing part (3) is connected to one of the first conductor (1) and the second conductor (2), and the cable fixing part (3) extends toward the other conductor; The first gap (5) and the cable fixing part (3) are disposed on opposite sides of the photovoltaic power semiconductor module.

3. Photovoltaic power semiconductor module according to claim 2, characterized in that When the two photovoltaic power semiconductor modules are arranged along the second direction, the first gap (5) is configured to accommodate the cable fixing part (3).

4. The photovoltaic power semiconductor module according to claim 1, characterized in that, It also includes a diode (4), a first gap (5) is provided between the first conductor (1) and the second conductor (2), and the diode (4) is disposed in the first gap (5) and electrically connected to the first conductor (1) and the second conductor (2) respectively. And / or, The first conductor (1), the second conductor (2), and the cable fixing part (3) are all stamped parts; And / or, The cable fixing part (3) and the conductor connected to it are integrally formed.

5. The photovoltaic power semiconductor module according to claim 1, characterized in that The first conductor (1), the second conductor (2) and the cable fixing part (3) are all planar / plate-shaped, and there is a height difference between the plane where the cable fixing part (3) is located and the plane where the conductor it is connected to is located; the cable fixing part (3) is connected to one of the first conductor (1) and the second conductor (2) through a bending part (31).

6. Photovoltaic power semiconductor module according to claim 5, characterized in that The photovoltaic power semiconductor module is disposed in a photovoltaic junction box, and the plane where the cable fixing part (3) is located is closer to the bottom of the photovoltaic junction box than the plane where the conductor to which it is connected is located.

7. The photovoltaic power semiconductor module according to claim 1, characterized in that, The first conductor (1) is provided with a first through hole (11) and a first welding area (12). The first through hole (11) is used for the first busbar to pass through, and the first welding area (12) is used for welding connection with the first busbar. The second conductor (2) is provided with a second through hole (21) and a second welding area (22). The second through hole (21) is used for the second busbar to pass through, and the second welding area (22) is used for welding connection with the second busbar.

8. Photovoltaic power semiconductor module according to claim 7, characterized in that It also includes a first detection area (14) and a second detection area (24). The first detection area (14) is located on the first conductor (1) near the first through hole (11), and the second detection area (24) is located on the second conductor (2) near the second through hole (21).

9. Photovoltaic power semiconductor module according to claim 8, characterized in that The minimum distance between the first detection area (14) and the first through hole (11) is not less than 10 mm, and the minimum distance between the second detection area (24) and the second through hole (21) is not less than 10 mm; And / or, The area of ​​the first detection area (14) is not less than 8*8mm. 2 The area of ​​the second detection area (24) is not less than 8*8mm. 2 .

10. A photovoltaic junction box, characterized by It includes a cover (100), a housing (200), and a photovoltaic power semiconductor module as described in any one of claims 1 to 7; The cover (100) and the box (200) cooperate with each other to form a receiving cavity, and the photovoltaic power semiconductor module is disposed in the receiving cavity.

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