A photovoltaic module and a photovoltaic power semiconductor module

Abstract

This utility model discloses a photovoltaic module and a photovoltaic power semiconductor module. The photovoltaic module includes a first busbar, a second busbar, a third busbar, a fourth busbar, and a photovoltaic power semiconductor module. The photovoltaic power semiconductor module includes a first conductor, a second conductor, and a third conductor, which are not in contact with each other. The first busbar is welded to and electrically connected to the first conductor, the second busbar is welded to and electrically connected to the second conductor, and the third and fourth busbars are respectively welded to and electrically connected to the third conductor. This utility model is applicable to novel four-cell photovoltaic panel modules and can improve the product quality and service life of photovoltaic modules.

Description

Technical Field

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

[0002] Photovoltaic power semiconductor modules are an important component of photovoltaic modules, primarily used to improve the reliability and efficiency of photovoltaic systems. 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 module.

[0003] On a photovoltaic module, the current of each cell string flows into the busbar through the grid lines. During installation, a dual-core junction box is placed on the back of the photovoltaic module, with its position corresponding to the gap between two adjacent cell strings. At the same time, an opening needs to be made at this gap position so that the busbar can pass through to the back of the photovoltaic module and be connected in parallel with the diode on the same side of the junction box.

[0004] Currently, photovoltaic (PV) modules mostly use three-part junction boxes. Each junction box contains one bypass diode, which is electrically connected to two busbars of the module to achieve circuit transmission. There is also a type of split-type PV junction box in the prior art, where each box contains two bypass diodes, forming a dual-diode junction box. For example, the PV bypass module and PV junction box disclosed in Chinese patent application CN222509254U, when using a dual-diode junction box, welds the two middle busbars connected in series inside the module together, ultimately leading out three busbars, which are electrically connected to the two diodes in the junction box to achieve circuit transmission.

[0005] 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

[0006] The purpose of this invention is to provide a photovoltaic module and a photovoltaic power semiconductor module that can improve the product quality and service life of the photovoltaic module.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A photovoltaic module includes a first busbar, a second busbar, a third busbar, a fourth busbar, and a photovoltaic power semiconductor module;

[0009] The photovoltaic power semiconductor module includes a first conductor, a second conductor, and a third conductor, wherein the first conductor, the second conductor, and the third conductor do not contact each other;

[0010] The first busbar is welded to and electrically connected to the first conductor, and the second busbar is welded to and electrically connected to the second conductor;

[0011] The third busbar and the fourth busbar are respectively welded to and electrically connected to the third conductor.

[0012] Furthermore, following any one or a combination of the aforementioned technical solutions, the first conductor, the second conductor, and the third conductor are arranged sequentially along the length of the photovoltaic power semiconductor module;

[0013] A first gap is provided between the first conductor and the third conductor, and the first busbar passes through the first gap and connects to the first conductor;

[0014] A second gap is provided between the second conductor and the third conductor, and the second busbar passes through the second gap and connects to the second conductor.

[0015] Furthermore, based on any or a combination of the aforementioned technical solutions, the third conductor includes a first protrusion extending in the width direction of the photovoltaic power semiconductor module, a first gap being provided between one of the left and right sides of the first protrusion and the first conductor, a second gap being provided between the other side of the first protrusion and the second conductor, and a third gap being provided between the end of the first protrusion and the first conductor and / or the second conductor.

[0016] Both the third busbar and the fourth busbar pass through the third gap and are welded and electrically connected to the third conductor.

[0017] Furthermore, following any one or a combination of the aforementioned technical solutions, the third conductor includes a first protrusion extending in the width direction of the photovoltaic power semiconductor module; a first gap is provided between one of the left and right sides of the first protrusion and the first conductor; a second gap is provided between the other side of the first protrusion and the second conductor; a third gap is provided between the end of the first protrusion and the first conductor and / or the second conductor; the third busbar passes through the third gap and is welded and electrically connected to the third conductor; a wire hole is provided on the third conductor; and the fourth busbar passes through the wire hole and is welded and electrically connected to the third conductor.

[0018] or,

[0019] The third conductor includes a first protrusion extending in the width direction of the photovoltaic power semiconductor module. A first gap is provided between one of the left and right sides of the first protrusion and the first conductor, and a second gap is provided between the other side of the left and right sides of the first protrusion and the second conductor. One or more through holes are provided on the third conductor. The third busbar and the fourth busbar pass through the same or different through holes and are welded and electrically connected to the third conductor.

[0020] Furthermore, following any one or a combination of the aforementioned technical solutions, the third conductor is provided with a first welding area and a second welding area.

[0021] The third busbar passes through the third gap and is welded and electrically connected to the first welding area;

[0022] The fourth busbar passes through the third gap and is welded and electrically connected to the second welding area.

[0023] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the third conductor is provided with a unique first welding area;

[0024] Both the third busbar and the fourth busbar pass through the third gap and are welded and electrically connected to the first welding area.

[0025] Furthermore, following any or a combination of the aforementioned technical solutions, the welding portion of one or more of the first, second, third, and fourth busbars is rectangular, triangular, or comb-shaped, and the welding portion is configured to be welded to a conductor; and / or,

[0026] One or more of the first, second, third, and fourth busbars have through holes or openings on their welded portions.

[0027] Furthermore, following any one or a combination of the aforementioned technical solutions, the system further includes a first axial diode and a second axial diode;

[0028] The first axial diode is configured to be electrically connected to the first conductor and the third conductor respectively, and a first notch is provided between the first conductor and the third conductor to accommodate the first axial diode;

[0029] The second axial diode is configured to be electrically connected to the second conductor and the third conductor respectively, and a second notch is provided between the second conductor and the third conductor to accommodate the second axial diode.

[0030] According to another aspect of the present invention, a photovoltaic power semiconductor module is provided, comprising a first conductor, a second conductor, and a third conductor, wherein the first conductor, the second conductor, and the third conductor are not in contact with each other;

[0031] The first conductor is configured to be electrically connected to the first busbar;

[0032] The second conductor is configured to be electrically connected to the second busbar;

[0033] The third conductor is configured to be electrically connected to the third busbar and the fourth busbar.

[0034] Furthermore, based on any or a combination of the aforementioned technical solutions, the third conductor includes a first protrusion extending in the width direction of the photovoltaic power semiconductor module, a first gap being provided between one of the left and right sides of the first protrusion and the first conductor, a second gap being provided between the other side of the first protrusion and the second conductor, and a third gap being provided between the end of the first protrusion and the first conductor and / or the second conductor.

[0035] The first gap is configured to allow the first busbar to pass through, and the second gap is configured to allow the second busbar to pass through;

[0036] The third gap is configured to allow the third busbar and the fourth busbar to pass through; or, the third conductor is provided with a through hole, the third gap is configured to allow the third busbar to pass through, and the through hole is configured to allow the fourth busbar to pass through.

[0037] The beneficial effects of the technical solution provided by this utility model are as follows:

[0038] This invention improves the structure of the photovoltaic power semiconductor module, enabling the direct lead-out of the third and fourth busbars in the photovoltaic module and their welding and electrical connection with the third conductor in the photovoltaic power semiconductor module. This eliminates the need to weld the third and fourth busbars inside the photovoltaic module, avoiding damage to the module caused by welding the busbars inside the module, and improving the pass rate and service life of the photovoltaic module. Attached Figure Description

[0039] 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.

[0040] Figure 1 A perspective view of a first photovoltaic module provided as an exemplary embodiment of the present invention;

[0041] Figure 2 A top view schematic diagram of a first photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0042] Figure 3 A perspective view of a first photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0043] Figure 4 A perspective view of a first photovoltaic power semiconductor module provided as an exemplary embodiment of the present invention;

[0044] Figure 5 A perspective view of a second photovoltaic module provided as an exemplary embodiment of the present invention;

[0045] Figure 6 A perspective view of a third type of photovoltaic module provided as an exemplary embodiment of the present invention;

[0046] Figure 7 A perspective view of a fourth photovoltaic module provided as an exemplary embodiment of the present invention;

[0047] Figure 8 This is a perspective view of a fifth type of photovoltaic module provided as an exemplary embodiment of the present invention.

[0048] The reference numerals in the accompanying drawings include: 1-first conductor, 10-second protrusion, 11-third welding area, 2-second conductor, 20-third protrusion, 21-fourth welding area, 3-third conductor, 30-first protrusion, 31-first welding area, 32-second welding area, 41-first axial diode, 411-first pin, 412-second pin, 42-second axial diode, 421-third pin, 422-fourth pin, 51-first busbar, 52-second busbar, 53-third busbar, 531-first welding part, 532-third welding part, 54-fourth busbar, 541-second welding part, 542-fourth welding part, 61-first gap, 62-second gap, 63-third gap. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] In practical applications, it has been found that welding busbars inside photovoltaic modules can cause certain damage to the modules. For example, the increased thickness of the welded area can cause damage to the modules when glass is laid on top of the solar panel, which is in close contact with the module.

[0052] Based on the aforementioned technical problems, in one embodiment of this utility model, a photovoltaic module is provided that does not weld the busbars inside the photovoltaic module, but instead directly leads out four busbars for electrical connection to the photovoltaic power semiconductor module. In this embodiment, as... Figure 1 As shown, it includes a first busbar 51, a second busbar 52, a third busbar 53, a fourth busbar 54, and a photovoltaic power semiconductor module;

[0053] The photovoltaic power semiconductor module includes a first conductor 1, a second conductor 2, and a third conductor 3, wherein the first conductor 1, the second conductor 2, and the third conductor 3 are not in contact with each other;

[0054] The first busbar 51 is welded to and electrically connected to the first conductor 1, and the second busbar 52 is welded to and electrically connected to the second conductor 2;

[0055] The third busbar 53 and the fourth busbar 54 are respectively welded to and electrically connected to the third conductor 3.

[0056] The photovoltaic module provided by this utility model has a third and fourth busbar that are directly led out and welded to the third conductor in the photovoltaic power semiconductor module to achieve electrical connection. This eliminates the need to weld the third and fourth busbars inside the photovoltaic module, thus avoiding damage to the module caused by welding the busbars inside the module and improving the pass rate and service life of the photovoltaic module.

[0057] In one embodiment of this utility model, such as Figures 1 to 4 As shown, the first conductor 1, the second conductor 2, and the third conductor 3 are arranged sequentially along the length direction of the photovoltaic power semiconductor module; the third conductor 3 includes a first protrusion 30 extending into the width direction of the photovoltaic power semiconductor module, a first gap 61 is provided between one side of the first protrusion 30 and the first conductor 1, a second gap 62 is provided between the other side of the first protrusion 30 and the second conductor 2, and a third gap 63 is provided between the end of the first protrusion 30 and the first conductor 1 and / or the second conductor 2.

[0058] For example, such as Figure 1 As shown, one end of the first conductor 1 has a second protrusion 10 extending in the direction of the second conductor 2; one end of the second conductor 2 has a third protrusion 20 extending in the direction of the first conductor 1; a certain gap is provided between the second protrusion 10 and the third protrusion 20, and the third gap 63 is provided between the second protrusion 10, the third protrusion 20 and the first protrusion 30.

[0059] Alternatively, one end of the first conductor 1 may have a second protrusion 10 extending in the direction of the second conductor 2, the second conductor 2 may not have the third protrusion 20, and the second protrusion 10 and the first protrusion 30 may be provided with the third gap 63. Alternatively, one end of the second conductor 2 may have a third protrusion 20 extending in the direction of the first conductor 1, the first conductor 1 may not have the second protrusion 10, and the third protrusion 20 and the first protrusion 30 may be provided with the third gap 63.

[0060] Alternatively, the first protrusion 30 can extend directly to the edge of the first conductor 1 and the second conductor 2, that is... Figure 2The upper edge of the first protrusion 30 is parallel to the upper edges of the first conductor 1 and the second conductor 2. Thus, there is no third gap 63 extending along the length direction of the photovoltaic power semiconductor module. The gap between the first conductor 1 and the first protrusion 30 extends along the width direction of the photovoltaic power semiconductor module, and the gap between the second conductor 2 and the first protrusion 30 also extends along the width direction of the photovoltaic power semiconductor module.

[0061] The first conductor 1 is provided with a third welding area 11. Preferably, the third welding area 11 is provided on the second protrusion 10. The first busbar 51 passes through the first gap 61 and is welded and electrically connected to the third welding area 11 on the first conductor 1.

[0062] The second conductor 2 is provided with a fourth welding area 21. Preferably, the fourth welding area 21 is provided on the third protrusion 20. The second busbar 52 passes through the second gap 62 and is welded and electrically connected to the fourth welding area 21 on the second conductor 2.

[0063] The third conductor 3 is provided with a first welding area 31, a second welding area 32, and a wire hole. Preferably, one side of the first welding area 31 and one side of the second welding area 32 are parallel to one side of the wire hole. The first welding area 31 and the second welding area 32 are both provided on the first protrusion 30. The wire hole is configured as a fourth gap 64. The third busbar 53 passes through the third gap 63 and is welded and electrically connected to one of the welding areas of the first welding area 31 and the second welding area 32. The fourth busbar 54 passes through the fourth gap 64 and is welded and electrically connected to the other welding area of ​​the first welding area 31 and the second welding area 32.

[0064] Alternatively, the third busbar 53 passes through the fourth gap 64, and the fourth busbar 54 passes through the third gap 63.

[0065] Alternatively, the number of the wire-passing holes can be one or more. Neither the third busbar 53 nor the fourth busbar 54 passes through the third gap 63; instead, the third busbar 53 and the fourth busbar 54 pass through the same wire-passing hole, or the third busbar 53 and the fourth busbar 54 pass through different wire-passing holes.

[0066] In this embodiment, as Figures 2 to 4As shown, the photovoltaic power semiconductor module further includes a first axial diode 41 and a second axial diode 42. The first axial diode 41 is configured to be electrically connected to the first conductor 1 and the third conductor 3 respectively, and a first notch is provided between the first conductor 1 and the third conductor 3 to accommodate the first axial diode 41. Specifically, the first pin 411 of the first axial diode 41 is electrically connected to the first conductor 1, the second pin 412 of the first axial diode 41 is electrically connected to the third conductor 3, and the first notch is configured to accommodate the middle main body portion of the first axial diode 41.

[0067] The second axial diode 42 is configured to be electrically connected to the second conductor 2 and the third conductor 3 respectively, and a second notch is provided between the second conductor 2 and the third conductor 3 to accommodate the second axial diode 42. Specifically, the third pin 421 of the second axial diode 42 is electrically connected to the third conductor 3, the fourth pin 422 of the second axial diode 42 is electrically connected to the second conductor 2, and the second notch is configured to accommodate the middle main body portion of the second axial diode 42.

[0068] In another embodiment of this utility model, such as Figures 6 to 8 As shown, the difference from the above embodiment is that the third conductor 3 in this embodiment has a unique first welding area 31 and no second welding area 32; the third bus bar 53 and the fourth bus bar 54 both pass through the third gap 63 and are welded and electrically connected to the first welding area 31.

[0069] In another embodiment of this utility model, such as Figure 5 As shown, the third conductor 3 includes a first protrusion 30 extending in the width direction of the photovoltaic power semiconductor module. A first gap 61 is provided between one side of the first protrusion 30 and the first conductor 1, and a second gap 62 is provided between the other side of the first protrusion 30 and the second conductor 2. A third gap 63 is provided between the end of the first protrusion 30 and the first conductor 1 and / or the second conductor 2. The third busbar 53 and the fourth busbar 54 both pass through the third gap 63 and are welded and electrically connected to the third conductor 3.

[0070] In this embodiment, the third conductor 3 can be as follows: Figures 6 to 8 As shown, a welding area is provided for welding with the third busbar 53 and the fourth busbar 54, or as shown... Figure 1 The above embodiment shown has two welding zones for welding to the third busbar 53 and the fourth busbar 54, respectively.

[0071] In any of the above embodiments, the welding portion of one or more of the first busbar 51, second busbar 52, third busbar 53, and fourth busbar 54 is rectangular, triangular, or comb-shaped, and the welding portion is configured to be welded to a conductor. This is particularly relevant in the case where only a single first welding area 31 is provided on the third conductor 3, such as... Figure 6 As shown, the end of the third busbar 53 is provided with a first welding part 531, and the end of the fourth busbar 54 is provided with a second welding part 541. Both the first welding part 531 and the second welding part 541 are triangular and are welded to different areas on the first welding area 31. This facilitates welding, saves welding area, and reduces processing costs.

[0072] like Figure 7 As shown, the third busbar 53 has a third welding portion 532 at its end, and the fourth busbar 54 has a fourth welding portion 542 at its end. Both the third welding portion 532 and the fourth welding portion 542 are strip-shaped. Preferably, the third welding portion 532 and the fourth welding portion 542 are welded to different areas of the first welding area 31, which facilitates welding, saves welding area, and reduces processing costs.

[0073] like Figure 8 As shown, the end of the third busbar 53 is provided with a fifth welding part 533, and an opening is provided on the fifth welding part 533 for welding.

[0074] Optionally, one or more of the first busbar 51, the second busbar 52, the third busbar 53, and the fourth busbar 54 may have through holes or openings on their welded portions.

[0075] In one embodiment of this utility model, a photovoltaic power semiconductor module is provided, such as... Figures 1 to 8 As shown, it includes a first conductor 1, a second conductor 2, and a third conductor 3, which are not in contact with each other. The first conductor 1 is configured to be electrically connected to a first busbar 51; the second conductor 2 is configured to be electrically connected to a second busbar 52; and the third conductor 3 is configured to be electrically connected to a third busbar 53 and a fourth busbar 54.

[0076] Specifically, such as Figures 5 to 8As shown, the third conductor 3 includes a first protrusion 30 extending in the width direction of the photovoltaic power semiconductor module. A first gap 61 is provided between one side of the first protrusion 30 and the first conductor 1, a second gap 62 is provided between the other side of the first protrusion 30 and the second conductor 2, and a third gap 63 is provided between the end of the first protrusion 30 and the first conductor 1 and / or the second conductor 2.

[0077] The first gap 61 is configured to allow the first busbar 51 to pass through, and the second gap 62 is configured to allow the second busbar 52 to pass through. The third gap 63 is configured to allow the third busbar 53 and the fourth busbar 54 to pass through.

[0078] In one embodiment of this utility model, a photovoltaic power semiconductor module is provided, such as... Figures 1 to 4 As shown, the difference from the above-described photovoltaic power semiconductor module embodiment is that the third conductor 3 is provided with a through hole, the third gap 63 is configured to allow the third busbar 53 to pass through, and the through hole is configured to allow the fourth busbar 54 to pass through.

[0079] It should be noted that the inventive concept of the photovoltaic power semiconductor module embodiment is the same as that of the photovoltaic power semiconductor module in the above-mentioned photovoltaic module embodiment. By reference, all relevant content of the photovoltaic power semiconductor module in the photovoltaic module embodiment is incorporated into the photovoltaic power semiconductor module embodiment.

[0080] 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.

[0081] 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 module, characterized by, It includes a first busbar (51), a second busbar (52), a third busbar (53), a fourth busbar (54), and a photovoltaic power semiconductor module; The photovoltaic power semiconductor module includes a first conductor (1), a second conductor (2) and a third conductor (3), wherein the first conductor (1), the second conductor (2) and the third conductor (3) do not contact each other; The first busbar (51) is welded to and electrically connected to the first conductor (1), and the second busbar (52) is welded to and electrically connected to the second conductor (2); The third busbar (53) and the fourth busbar (54) are respectively welded to and electrically connected to the third conductor (3).

2. The photovoltaic module of claim 1, wherein, The first conductor (1), the second conductor (2), and the third conductor (3) are arranged sequentially along the length of the photovoltaic power semiconductor module; A first gap (61) is provided between the first conductor (1) and the third conductor (3), and the first busbar (51) passes through the first gap (61) and connects to the first conductor (1); A second gap (62) is provided between the second conductor (2) and the third conductor (3), and the second busbar (52) passes through the second gap (62) and connects to the second conductor (2).

3. The photovoltaic module of claim 2, wherein, The third conductor (3) includes a first protrusion (30) extending in the width direction of the photovoltaic power semiconductor module. A first gap (61) is provided between one side of the first protrusion (30) and the first conductor (1), and a second gap (62) is provided between the other side of the first protrusion (30) and the second conductor (2). A third gap (63) is provided between the end of the first protrusion (30) and the first conductor (1) and / or the second conductor (2). The third busbar (53) and the fourth busbar (54) are both welded and electrically connected to the third conductor (3) through the third gap (63).

4. The photovoltaic module of claim 2, wherein, The third conductor (3) includes a first protrusion (30) extending in the width direction of the photovoltaic power semiconductor module. A first gap (61) is provided between one side of the first protrusion (30) and the first conductor (1), and a second gap (62) is provided between the other side of the first protrusion (30) and the second conductor (2). A third gap (63) is provided between the end of the first protrusion (30) and the first conductor (1) and / or the second conductor (2). The third busbar (53) passes through the third gap (63) and is welded and electrically connected to the third conductor (3). The third conductor (3) is provided with a wire hole, and the fourth busbar (54) passes through the wire hole and is welded and electrically connected to the third conductor (3). or, The third conductor (3) includes a first protrusion (30) extending in the width direction of the photovoltaic power semiconductor module. A first gap (61) is provided between one side of the first protrusion (30) and the first conductor (1), and a second gap (62) is provided between the other side of the first protrusion (30) and the second conductor (2). One or more wire holes are provided on the third conductor (3). The third bus bar (53) and the fourth bus bar (54) pass through the same or different wire holes and are welded and electrically connected to the third conductor (3).

5. The photovoltaic module according to claim 3 or 4, characterized in that The third conductor (3) is provided with a first welding area (31) and a second welding area (32); The third busbar (53) passes through the third gap (63) and is welded and electrically connected to the first welding area (31); The fourth busbar (54) passes through the third gap (63) and is welded and electrically connected to the second welding area (32).

6. The photovoltaic module according to claim 3 or 4, characterized in that The third conductor (3) has a unique first welding area (31). The third busbar (53) and the fourth busbar (54) both pass through the third gap (63) and are welded and electrically connected to the first welding area (31).

7. The photovoltaic module of claim 1, wherein, The welded portion of one or more of the first busbar (51), the second busbar (52), the third busbar (53), and the fourth busbar (54) is rectangular, triangular, or comb-shaped, and the welded portion is configured to be welded to a conductor; and / or, One or more of the first busbar (51), the second busbar (52), the third busbar (53), and the fourth busbar (54) have through holes or openings on their welded portions.

8. The photovoltaic module of claim 1, wherein, It also includes a first axial diode (41) and a second axial diode (42); The first axial diode (41) is configured to be electrically connected to the first conductor (1) and the third conductor (3) respectively, and a first notch is provided between the first conductor (1) and the third conductor (3) to accommodate the first axial diode (41); The second axial diode (42) is configured to be electrically connected to the second conductor (2) and the third conductor (3) respectively, and a second notch is provided between the second conductor (2) and the third conductor (3) to accommodate the second axial diode (42).

9. A photovoltaic power semiconductor module, characterized by It includes a first conductor (1), a second conductor (2) and a third conductor (3), wherein the first conductor (1), the second conductor (2) and the third conductor (3) do not contact each other; The first conductor (1) is configured to be electrically connected to the first busbar (51); The second conductor (2) is configured to be electrically connected to the second busbar (52); The third conductor (3) is configured to be electrically connected to the third busbar (53) and the fourth busbar (54).

10. Photovoltaic power semiconductor module according to claim 9, characterized in that The third conductor (3) includes a first protrusion (30) extending in the width direction of the photovoltaic power semiconductor module. A first gap (61) is provided between one side of the first protrusion (30) and the first conductor (1), and a second gap (62) is provided between the other side of the first protrusion (30) and the second conductor (2). A third gap (63) is provided between the end of the first protrusion (30) and the first conductor (1) and / or the second conductor (2). The first gap (61) is configured to allow the first busbar (51) to pass through, and the second gap (62) is configured to allow the second busbar (52) to pass through; The third gap (63) is configured to allow the third busbar (53) and the fourth busbar (54) to pass through; or, the third conductor (3) is provided with a wire hole, the third gap (63) is configured to allow the third busbar (53) to pass through, and the wire hole is configured to allow the fourth busbar (54) to pass through.

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