Jumper structure and photovoltaic module

Abstract

The invention relates to the field of photovoltaic technology, in particular to a jumper structure and a photovoltaic module. The jumper structure includes a first jumper. Wherein the first jumper wire comprises a first connecting part, a second connecting part and a third connecting part, one end of the first connecting part is connected with one end of the second connecting part, the connecting part is arched to form the third connecting part, the end part of the third connecting part is bent to form a bent part, and the bent part is configured to be in welded connection with a metal piece in the junction box. The end, away from the second connecting part, of the first connecting part is used for being in welded connection with one end bus bar, and the end, away from the first connecting part, of the second connecting part is used for being in welded connection with the other end bus bar. In other words, the first connecting part and the second connecting part are used for being connected with the corresponding end bus bars in a welded mode. Through the arrangement of the jumper structure, the connection stability and reliability of the jumper structure and the junction box can be improved, and the long-term stable operation requirement of the photovoltaic module is met.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and in particular to a jumper structure and a photovoltaic module. Background Technology

[0002] With the continuous development of photovoltaic technology, multi-segment photovoltaic modules have the advantage of lower resistance loss and are gradually becoming a key development direction for improving the performance of photovoltaic modules.

[0003] Hot spot effect is one of the core failure risks of photovoltaic modules. Specifically, when a solar cell is shaded, the shaded cell transforms from a power generation unit into an energy consumption unit, generating a large amount of heat due to reverse bias. In severe cases, this can burn out the cell or even the entire module. The jumper structure, as a key protection and connection component of multi-cell modules, works by connecting to a bypass diode in series. One end is connected to the cell electrode, and the other end is connected to the busbar. Under normal operating conditions, it conducts the current generated by the cells. When a cell in a certain area is shaded, triggering the hot spot risk, the current can bypass the shaded cell through the jumper and the bypass diode to form a bypass loop, thus preventing the formation of hot spots.

[0004] In related technologies, the connection stability and reliability between jumpers and junction boxes are poor. During the long-term operation of photovoltaic modules, the jumpers and junction boxes are prone to loosening, which reduces the performance of photovoltaic modules and makes it difficult to meet the requirements for long-term stable operation of photovoltaic modules.

[0005] Therefore, there is an urgent need to design a jumper structure and photovoltaic module to solve the above technical problems. Summary of the Invention

[0006] The purpose of this invention is to propose a jumper structure and a photovoltaic module that can improve the stability and reliability of the jumper structure and junction box connection, and meet the requirements for long-term stable operation of photovoltaic modules.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] On one hand, the present invention provides a jumper structure, comprising:

[0009] The first jumper includes a first connecting part, a second connecting part and a third connecting part. One end of the first connecting part is connected to one end of the second connecting part and arches at the connection to form the third connecting part. The end of the third connecting part is bent to form a bent part. The bent part is configured to be welded to a metal part in the junction box.

[0010] The end of the first connecting part away from the second connecting part is used for welding to one of the end busbars, and the end of the second connecting part away from the first connecting part is used for welding to the other end busbar.

[0011] As an optional technical solution for jumper structure, the bent portion overlaps with the metal part in the junction box and forms a first welding area on the bent portion, and the first welding area is provided with at least one weld.

[0012] The first connecting portion overlaps with the end busbar and forms a second welding area on the first connecting portion, and the second welding area is provided with at least one weld.

[0013] The second connecting portion overlaps with the end busbar and forms a third welding area on the second connecting portion, wherein the third welding area is provided with at least one weld.

[0014] As an alternative technical solution for jumper structure, at least one of the first welding area, the second welding area and the third welding area is provided with an opening, which is configured to increase the welding pull force.

[0015] As an optional technical solution for jumper structure, the first connecting part, the third connecting part, the bending part and the second connecting part are integrally formed.

[0016] As an optional technical solution for jumper structure, the included angle between the third connecting part and the first connecting part is R1, the included angle between the third connecting part and the second connecting part is R2, and the included angle between the third connecting part and the bending part is R3, with the range of R1, R2, and R3 all set to 30°-150°.

[0017] As an optional technical solution for the jumper structure, the jumper structure further includes a second jumper, which includes a fourth connecting part, a fifth connecting part, and a shaping part. The opposite ends of the shaping part are respectively connected to the fourth connecting part and the fifth connecting part. The end of the fourth connecting part away from the shaping part is used for welding to one of the end busbars, and the end of the fifth connecting part away from the shaping part is used for welding to the other end busbar. The shaping part is used for welding to the intermediate busbar.

[0018] As an alternative technical solution for jumper structure, the shaping part arches upward and forms a clearance space below the shaping part, the clearance space being used for the intermediate busbar to pass through.

[0019] As an optional technical solution for jumper structure, the shaping part overlaps with the intermediate busbar and forms a fourth welding area on the shaping part, and the fourth welding area is provided with at least one weld.

[0020] The fourth connecting part overlaps with the end busbar and forms a fifth welding area on the fourth connecting part, and the fifth welding area is provided with at least one weld.

[0021] The fifth connecting part overlaps with the end busbar and forms a sixth welding area on the fifth connecting part, and the sixth welding area is provided with at least one weld.

[0022] On the other hand, the present invention provides a photovoltaic module, the photovoltaic module including a battery string module, a middle busbar, an end busbar, a junction box, and a jumper structure as described in any of the above optional technical solutions;

[0023] Both the intermediate busbar and the end busbar are connected to the battery string module, and the intermediate busbar is connected to the junction box; the bent part of the first jumper is welded to the metal part of the junction box, and the first connecting part and the second connecting part are welded to the two end busbars respectively.

[0024] As an optional technical solution for photovoltaic modules, the end of the intermediate busbar is provided with a lead-out portion, and a preset distance is provided between the lead-out portion and the shaping portion in the second jumper.

[0025] The beneficial effects of the present invention include at least the following:

[0026] This invention provides a jumper structure including a first jumper. The first jumper includes a first connecting portion, a second connecting portion, and a third connecting portion. One end of the first connecting portion is connected to one end of the second connecting portion, and the connection point is arched to form the third connecting portion. The end of the third connecting portion is bent to form a bent portion, which is configured to be welded to a metal component in a junction box. The end of the first connecting portion away from the second connecting portion is used for welding to one of the end busbars, and the end of the second connecting portion away from the first connecting portion is used for welding to the other end busbar. In other words, both the first and second connecting portions are used for welding to their respective end busbars.

[0027] As described above, one end of the first connecting part is connected to one end of the second connecting part, and the connection point arches upward to form a third connecting part. The end of the third connecting part away from the connecting end is bent to form a bent part. The shape of this bent part is adapted to the mounting surface of the metal parts inside the junction box, allowing it to fit tightly against the surface of the metal parts for welding, thus preventing the weld from loosening due to uneven stress caused by gaps in the fit. At the same time, the arched structure of the third connecting part provides installation space for the metal parts inside the junction box, preventing the first jumper from interfering with other components of the junction box, further ensuring the stability after welding, and reducing the risk of loosening during long-term operation.

[0028] The present invention also provides a photovoltaic module that has high stability and reliability and extends service life. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the first jumper wire connected to the metal parts and end busbar of the junction box according to Embodiment 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the second jumper connected to the intermediate busbar and the end busbar provided in Embodiment 1 of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection between the first jumper and the end busbar provided in Embodiment 2 of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the second jumper connected to the intermediate busbar and the end busbar provided in Embodiment 2 of the present invention.

[0034] Figure Labels

[0035] 10. First jumper wire; 11. First connecting part; 111. Second welding area; 12. Second connecting part; 13. Third connecting part; 14. Bending part; 141. First welding area; 15. Weld; 16. Opening;

[0036] 20. Second jumper wire; 21. Fourth connecting part; 211. Fifth welding area; 22. Fifth connecting part; 23. Shaping part; 231. Clearance position; 232. Fourth welding area;

[0037] 30. Metal parts; 40. End busbar; 50. Intermediate busbar; 51. Lead-out section. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0045] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] Example 1

[0047] This embodiment provides a jumper structure that can improve the stability and reliability of the connection between the jumper structure and the junction box, meeting the long-term stable operation requirements of photovoltaic modules.

[0048] like Figure 1 As shown, the jumper structure mainly includes a first jumper 10. The first jumper 10 includes a first connecting portion 11, a second connecting portion 12, and a third connecting portion 13. One end of the first connecting portion 11 connects to one end of the second connecting portion 12, and the connection point arches to form the third connecting portion 13. The end of the third connecting portion 13 is bent to form a bent portion 14, which is configured to be welded to a metal component 30 in the junction box. The end of the first connecting portion 11 away from the second connecting portion 12 is used for welding to one of the end busbars 40, and the end of the second connecting portion 12 away from the first connecting portion 11 is used for welding to the other end busbar 40. In other words, both the first connecting portion 11 and the second connecting portion 12 are used for welding to their respective end busbars 40.

[0049] Based on the above design, in this embodiment, one end of the first connecting part 11 is connected to one end of the second connecting part 12 through a molding process, and the connection point arches upward to form a third connecting part 13; the end of the third connecting part 13 away from the connecting end is bent to form a bent part 14. The shape of the bent part 14 is adapted to the mounting surface of the metal part 30 inside the junction box, and can be tightly fitted to the surface of the metal part 30 to achieve welding, avoiding loosening due to uneven stress on the weld point caused by the fitting gap. At the same time, the arched structure of the third connecting part 13 provides installation space for the metal part 30 inside the junction box, avoids interference between the first jumper 10 and other components of the junction box, further ensures the stability after welding, and reduces the risk of loosening during long-term operation.

[0050] like Figure 1As shown, in this embodiment, the bent portion 14 overlaps with the metal part 30 in the junction box, forming a first welding area 141 on the bent portion 14. The first welding area 141 is formed with at least one weld 15 using laser welding technology. The first connecting portion 11 overlaps with the end busbar 40, forming a second welding area 111 on the first connecting portion 11. The second welding area 111 is formed with at least one weld 15 using laser welding technology. The second connecting portion 12 overlaps with the end busbar 40, forming a third welding area (not shown in the figure) on the second connecting portion 12. The third welding area is formed with at least one weld 15 using laser welding technology. The provision of at least one weld 15 can prevent the photovoltaic module from detaching during transportation, vibration, or thermal expansion and contraction. Compared with the connection method without weld 15, at least one weld 15 can provide continuous fixing force, significantly reducing the risk of loosening of the bent portion 14 during long-term operation.

[0051] For example, the operator can flexibly set the number of welds 15 according to actual needs, such as setting 1, 2, 3, etc.

[0052] Optionally, in this embodiment, the first connecting portion 11, the third connecting portion 13, the bending portion 14, and the second connecting portion 12 are integrally formed. For example, the first connecting portion 11, the third connecting portion 13, the bending portion 14, and the second connecting portion 12 of the first jumper 10 are manufactured using an integrated metal sheet stamping and bending process, without any splicing seams. This avoids the risk of loose connections at splicing seams and enhances the structural strength of the jumper structure itself, resisting deformation stress during long-term operation and reducing the risk of connection loosening due to defects in the jumper structure itself.

[0053] Of course, in other embodiments, the first jumper 10 may also be composed of two or more conductive metals.

[0054] like Figure 1 As shown, in this embodiment, the included angle between the third connecting part 13 and the first connecting part 11 is R1, the included angle between the third connecting part 13 and the second connecting part 12 is R2, and the included angle between the third connecting part 13 and the bent part 14 is R3. The range of R1, R2, and R3 can all be set to 30°-150°. Preferably, R1=R2=R3=90°.

[0055] Specifically, the first connecting part 11 and the second connecting part 12 are horizontally distributed, and the third connecting part 13 is vertically distributed to adapt to the height of the metal part 30 of the junction box. The bending part 14 is horizontally distributed to adapt to the mounting surface of the metal part 30 inside the junction box, which can perfectly fit the internal spatial layout of the junction box, avoid interference, ensure a tight fit before welding, and lay the foundation for subsequent stable welding.

[0056] like Figure 2As shown, the jumper structure in this embodiment also includes a second jumper 20. The second jumper 20 includes a fourth connecting part 21, a fifth connecting part 22, and a shaping part 23. The opposite ends of the shaping part 23 are connected to the fourth connecting part 21 and the fifth connecting part 22, respectively. The end of the fourth connecting part 21 away from the shaping part 23 is used to weld to one of the end busbars 40. The end of the fifth connecting part 22 away from the shaping part 23 is used to weld to the other end busbar 40. The shaping part 23 is used to weld to the intermediate busbar 50.

[0057] In this embodiment, the second jumper 20 works in conjunction with the first jumper 10. Even if the first jumper 10 fails partially, the current in the middle area can still be conducted to the end busbar 40 through the second jumper 20, ensuring that the photovoltaic module will not stop operating due to a single point connection failure, and further meeting the requirements for long-term stable operation.

[0058] The shaping part 23 of the second jumper 20 can adjust its shape according to the position of the intermediate busbar 50 to ensure a stable fit with the intermediate busbar 50, avoid connection loosening due to poor compatibility, and provide a guarantee for the stable conduction of current in the intermediate area.

[0059] like Figure 2 As shown, the shaping part 23 arches upward and forms a clearance position 231 below the shaping part 23. The clearance position 231 is used for the intermediate busbar 50 to pass through.

[0060] Specifically, the intermediate busbar 50 has a certain thickness. If the shaping part 23 is a planar structure, it is easy to cause compression when it overlaps with the intermediate busbar 50, leading to deformation or surface damage of both, which in turn causes poor welding or loosening. In this embodiment, the clearance part 231 can accommodate the volume of the intermediate busbar 50, so that the shaping part 23 and the intermediate busbar 50 only contact each other in the preset welding area, avoiding compression interference in the non-welding area, ensuring that the two fit tightly before welding, and providing a basis for stable connection.

[0061] like Figure 2 As shown, the shaping part 23 overlaps with the intermediate busbar 50, and a fourth welding area 232 is formed on the shaping part 23. The fourth welding area 232 is formed with at least one weld 15 using a laser welding process. The fourth connecting part 21 overlaps with the end busbar 40, and a fifth welding area 211 is formed on the fourth connecting part 21. The fifth welding area 211 is formed with at least one weld 15 using a laser welding process. The fifth connecting part 22 overlaps with the end busbar 40, and a sixth welding area (not shown in the figure) is formed on the fifth connecting part 22. The sixth welding area is formed with at least one weld 15 using a laser welding process.

[0062] The presence of at least one weld 15 can prevent the photovoltaic modules from detaching during transportation, vibration, or thermal expansion and contraction. Compared to connection methods without welds 15, at least one weld 15 can provide continuous fixing force, significantly reducing the risk of loosening during long-term operation.

[0063] For example, the operator can flexibly set the number of welds 15 according to actual needs, such as setting 1, 2, 3, etc.

[0064] Optionally, in this embodiment, both the first jumper 10 and the second jumper 20 are made of a conductive metal material, such as a copper alloy, which has good conductivity and ductility.

[0065] Optionally, in this embodiment, the width of the first jumper 10 and the second jumper 20 can be set to 4mm-12mm, and the thickness to 0.1mm-0.3mm.

[0066] This embodiment also provides a photovoltaic module, which mainly includes a battery string module, a middle busbar 50, end busbars 40, a junction box, and the aforementioned jumper structure. Both the middle busbar 50 and the end busbars 40 are connected to the battery string module, and the middle busbar 50 is connected to the junction box. The bent portion 14 of the first jumper 10 is welded to the metal part 30 of the junction box, and the first connecting portion 11 and the second connecting portion 12 are respectively welded to the two end busbars 40. The shaping portion 23 of the second jumper 20 is welded to the middle busbar 50, the fourth connecting portion 21 of the second jumper 20 is welded to the corresponding end busbar 40, and the fifth connecting portion 22 of the second jumper 20 is welded to the corresponding end busbar 40.

[0067] Because of the jumper structure described above, the photovoltaic module has high stability and reliability, and its service life is extended.

[0068] The welding tensile force of the first welding area 141, the second welding area 111, the third welding area, the fourth welding area 232, the fifth welding area 211, and the sixth welding area is greater than 20N, and the overlapping area of ​​the first welding area 141, the second welding area 111, the third welding area, the fourth welding area 232, the fifth welding area 211, and the sixth welding area is not less than 12mm².

[0069] For example, the battery string module in this embodiment consists of two battery string arrays. The two battery string arrays are symmetrically arranged with the intermediate busbar 50 as the axis of symmetry, and the two battery string arrays are connected in parallel through the intermediate busbar 50. Each battery string array consists of three battery string groups connected in series. Each battery string group includes two single battery strings. One end of each of the two single battery strings is electrically connected to the intermediate busbar 50, and the other end is electrically connected to the end busbar 40, so as to realize the parallel connection of the two single battery strings with the intermediate busbar 50 and the end busbar 40.

[0070] The intermediate busbar 50 has an outlet 51 at its end, and a preset distance is provided between the outlet 51 and the shaping part 23 in the second jumper 20. If there is no preset distance, during photovoltaic module operation, the intermediate busbar 50 and the second jumper 20 will expand and contract due to heat. Expansion will cause them to compress each other, leading to deformation, and contraction will create gaps, resulting in a loose connection. In this embodiment, the preset distance can accommodate such deformation, preventing compression deformation or gaps, ensuring the relative position of the outlet 51 and the shaping part 23 is stable, thereby ensuring a reliable welded connection between the second jumper 20 and the intermediate busbar 50 and preventing loosening.

[0071] For example, the preset spacing is no more than 4mm.

[0072] Example 2

[0073] like Figure 3 As shown, this embodiment provides a jumper structure, the main difference from the first embodiment is that: at least one of the first welding area 141, the second welding area 111 and the third welding area in this embodiment is provided with an opening 16, and the opening 16 is configured to increase the welding pull force.

[0074] Specifically, the opening 16 penetrates the jumper structure. This opening allows solder to partially flow into the opening 16 during welding. After the solder cools and solidifies, the solder flowing into the opening 16 forms a mechanical interlocking structure, significantly increasing welding tensile strength. Furthermore, the opening 16 does not disrupt the overall conductive path of the welding area; current can still be stably conducted through the unopened portion of the welding area. Moreover, during photovoltaic module operation, the difference in thermal expansion coefficients between the jumper structure and the metal components 30 and end busbars 40 within the junction box can easily generate deformation stress. The opening 16 provides a buffer space for this deformation, preventing stress concentration at the edge of the weld 15 and thus preventing weld cracking and extending the lifespan of the photovoltaic module.

[0075] like Figure 4 As shown, similarly, the fourth welding area 232, the fifth welding area 211 and the sixth welding area in this embodiment can also have openings 16. The openings 16 are used to increase the welding tensile force and improve the stability and reliability of the welding.

[0076] The rest of the jumper structure in this embodiment is the same as in Embodiment 1, and will not be described in detail here.

[0077] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

[0078] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A jumper structure, characterized in that, include: The first jumper (10) includes a first connecting part (11), a second connecting part (12) and a third connecting part (13). One end of the first connecting part (11) is connected to one end of the second connecting part (12) and arches at the connection to form the third connecting part (13). The end of the third connecting part (13) is bent to form a bent part (14). The bent part (14) is configured to be welded to a metal part (30) in the junction box. The end of the first connecting part (11) away from the second connecting part (12) is used to weld to one of the end busbars (40), and the end of the second connecting part (12) away from the first connecting part (11) is used to weld to the other end busbar (40).

2. The jumper structure according to claim 1, characterized in that, The bent portion (14) overlaps with the metal part (30) in the junction box and forms a first welding area (141) on the bent portion (14), the first welding area (141) having at least one weld (15). The first connecting part (11) overlaps with the end busbar (40) and forms a second welding area (111) on the first connecting part (11), and the second welding area (111) is provided with at least one weld (15). The second connecting part (12) overlaps with the end busbar (40) and forms a third welding area on the second connecting part (12), wherein the third welding area is provided with at least one weld (15).

3. The jumper structure according to claim 2, characterized in that, An opening (16) is provided on at least one of the first welding area (141), the second welding area (111), and the third welding area, and the opening (16) is configured to increase the welding pull force.

4. The jumper structure according to claim 1, characterized in that, The first connecting part (11), the third connecting part (13), the bending part (14) and the second connecting part (12) are integrally formed.

5. The jumper structure according to claim 1, characterized in that, The angle between the third connecting part (13) and the first connecting part (11) is R1, the angle between the third connecting part (13) and the second connecting part (12) is R2, and the angle between the third connecting part (13) and the bent part (14) is R3. The range of R1, R2 and R3 is set to 30°-150°.

6. The jumper structure according to claim 1, characterized in that, The jumper structure also includes a second jumper (20), which includes a fourth connecting part (21), a fifth connecting part (22), and a shaping part (23). The opposite ends of the shaping part (23) are connected to the fourth connecting part (21) and the fifth connecting part (22) respectively. The end of the fourth connecting part (21) away from the shaping part (23) is used to weld to one of the end busbars (40). The end of the fifth connecting part (22) away from the shaping part (23) is used to weld to the other end busbar (40). The shaping part (23) is used to weld to the intermediate busbar (50).

7. The jumper structure according to claim 6, characterized in that, The shaping part (23) arches upward and forms a clearance position (231) below the shaping part (23), the clearance position (231) being used to pass through the intermediate busbar (50).

8. The jumper structure according to claim 7, characterized in that, The shaping part (23) overlaps with the intermediate busbar (50) and forms a fourth welding area (232) on the shaping part (23), and the fourth welding area (232) is provided with at least one weld (15). The fourth connecting part (21) overlaps with the end busbar (40) and forms a fifth welding area (211) on the fourth connecting part (21), and the fifth welding area (211) is provided with at least one weld (15). The fifth connecting part (22) overlaps with the end busbar (40) and forms a sixth welding area on the fifth connecting part (22), the sixth welding area having at least one weld (15).

9. A photovoltaic module, characterized in that, The photovoltaic module includes a battery string module, a middle busbar (50), an end busbar (40), a junction box, and a jumper structure as described in any one of claims 1-8; The intermediate busbar (50) and the end busbar (40) are both connected to the battery string module. The intermediate busbar (50) is connected to the junction box. The bent part (14) of the first jumper (10) is welded to the metal part (30) of the junction box. The first connecting part (11) and the second connecting part (12) are respectively welded to the two end busbars (40).

10. The photovoltaic module according to claim 9, characterized in that, The end of the intermediate busbar (50) is provided with a lead-out portion (51), and a preset distance is provided between the lead-out portion (51) and the shaping portion (23) in the second jumper (20).

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