Photovoltaic junction box

Abstract

The utility model belongs to the field of photovoltaic technology, and discloses a photovoltaic junction box used for connecting four bus bars. The photovoltaic junction box comprises a box body, and a conducting strip, a first diode and a second diode which are arranged in the box body. The first diodes and the second diodes are distributed at intervals along the length direction of the box body, and the connecting end parts of the four bus bars extend into the box body and are conductively connected with the conducting strip; two of the four bus bars are distributed along the length direction of the box body, and the two bus bars distributed along the length direction of the box body are respectively staggered with the first diode and the second diode in the width direction of the box body. According to the photovoltaic junction box, the two bus bars distributed in the length direction of the box body are arranged to be staggered with the first diode and the second diode in the width direction of the box body, so that the two bus bars are prevented from being affected by the first diode and the second diode when the temperature is too high, and local high temperature of the bus bars is avoided; and the heat in the box body is uniformly distributed.

Description

Technical Field

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

[0002] The photovoltaic junction box is an important part of the photovoltaic module, serving both connection and protection functions. Currently, most photovoltaic modules have two busbars, and the photovoltaic junction box is used to connect the two busbars.

[0003] However, photovoltaic modules are now starting to adopt four-cell technology to improve the power of existing photovoltaic modules. Due to the adjustment of photovoltaic modules, the original junction boxes are no longer suitable for photovoltaic modules using four-cell technology. In order to adapt to the photovoltaic modules, the existing technology is to merge the original photovoltaic junction boxes into one junction box. However, the heat inside the merged junction box is too concentrated, resulting in poor heat dissipation. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic junction box that avoids heat concentration and improves heat dissipation efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A photovoltaic junction box is used to connect four busbars;

[0007] The photovoltaic junction box includes a box body and a conductive sheet, a first diode, and a second diode disposed within the box body. The first diode and the second diode are spaced apart along the length of the box body and are conductively connected to the conductive sheet. The connection ends of the four busbars extend into the box body and are conductively connected to the conductive sheet.

[0008] Two of the busbars are distributed along the width direction of the housing, and the other two busbars are distributed along the length direction of the housing. The two busbars distributed along the length direction of the housing are respectively offset from the first diode and the second diode in the width direction of the housing.

[0009] As an alternative, the first diode has two first pins, and the second diode has two second pins;

[0010] The conductive sheet includes a first conductive sheet, a second conductive sheet, and a third conductive sheet. The two first pins are electrically connected to the first conductive sheet and the third conductive sheet, respectively, and the two second pins are electrically connected to the second conductive sheet and the third conductive sheet, respectively.

[0011] The connecting ends of the two busbars distributed along the length of the box are conductively connected to the first conductive sheet and the second conductive sheet, respectively; the two busbars distributed along the width of the box are both conductively connected to the third conductive sheet.

[0012] As an alternative, both the first conductive sheet and the second conductive sheet have notches on one side along the width direction of the housing, and the first diode and the second diode are respectively disposed in the two notches;

[0013] The two busbars distributed along the length of the box are offset from the two notches in the width direction of the box.

[0014] As an alternative, the projection of the first pin near the second diode and a busbar distributed along the length of the housing in the depth direction of the housing coincides;

[0015] The second pin near the first diode and the projection portion of the busbar distributed along the width direction of the housing in the depth direction of the housing coincide.

[0016] As an alternative, the third conductive sheet includes a first conductive portion and a second conductive portion that are interconnected, with the first conductive portion, the first conductive sheet, the second conductive portion, and the second conductive sheet distributed at intervals in sequence;

[0017] The first diode is disposed between the first conductive part and the first conductive sheet, and the two first pins are conductively connected to the first conductive part and the first conductive sheet respectively; the second diode is disposed between the second conductive part and the second conductive sheet, and the two second pins are conductively connected to the second conductive part and the second conductive sheet respectively.

[0018] Both of the busbars distributed along the width of the box are electrically connected to the second conductive part.

[0019] As an alternative, the first conductive portion has bent edges on its three sides, except for the side facing the first diode.

[0020] As an alternative, the box body is provided with a partition plate, which is sandwiched between the first conductive part and the first conductive sheet.

[0021] As an optional solution, the box body is further provided with a first guide groove corresponding to the first conductive sheet, a second guide groove corresponding to the second conductive sheet, and a third guide groove corresponding to the third conductive sheet;

[0022] The connecting ends of the two busbars distributed along the length of the box are respectively inserted into the first guide groove and the second guide groove, and are electrically connected to the first conductive sheet and the second conductive sheet respectively;

[0023] Two busbars distributed along the width direction of the box are interconnected, and the connecting end of one of the two busbars distributed along the width direction of the box passes through the third guide groove and is electrically connected to the third conductive sheet.

[0024] As an alternative, the first guide groove is composed of two spaced-apart first vertical plates disposed in the box body. The height of the first vertical plate away from the first conductive sheet is equal to the height of the first conductive sheet and is higher than the first vertical plate close to the first conductive sheet.

[0025] The second guide groove is composed of two spaced second vertical plates disposed on the box body. The height of the second vertical plate away from the second conductive sheet is equal to the height of the second conductive sheet and is higher than the second vertical plate close to the second conductive sheet.

[0026] The third guide groove is composed of two spaced third vertical plates disposed on the box body. The height of the third vertical plate away from the third conductive sheet is equal to the height of the third conductive sheet and is higher than the third vertical plate close to the third conductive sheet.

[0027] As an optional solution, the photovoltaic junction box also includes a cable that is electrically connected to the second conductive sheet, and the cable is in contact with the second pin.

[0028] The beneficial effects of this utility model are:

[0029] The photovoltaic junction box provided by this utility model avoids the impact of the first and second diodes on the two busbars when the temperature is too high by setting the two busbars distributed along the length of the box to not coincide with the projection of the first diode and the second diode in the depth direction of the box. This avoids local high temperature in the busbars, makes the heat distribution in the box uniform, and allows the busbars to quickly conduct the heat from the conductive sheet, thus improving the heat dissipation effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the photovoltaic junction box provided in this embodiment of the utility model;

[0031] Figure 2 This is a structural schematic diagram of the photovoltaic junction box (front) and busbar provided in this embodiment of the utility model;

[0032] Figure 3This is a structural schematic diagram of the photovoltaic junction box (back side) and busbar provided in this embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the conductive sheet involved in the embodiment of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the third conductive sheet involved in the embodiment of this utility model;

[0035] Figure 6 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0036] Figure 7 This is a schematic diagram of the cable and second pin involved in the embodiment of this utility model.

[0037] In the picture:

[0038] 100. Busbar; 101. Connecting end;

[0039] 1. Box body; 11. Partition plate; 12. First guide groove; 121. First vertical plate; 13. Second guide groove; 131. Second vertical plate; 14. Third guide groove; 141. Third vertical plate; 15. Raised groove;

[0040] 2. First diode; 21. First pin;

[0041] 3. Second diode; 31. Second pin;

[0042] 4. First conductive sheet;

[0043] 5. Second conductive sheet; 51. Second potting port;

[0044] 6. Third conductive sheet; 61. First conductive part; 611. Bending edge; 612. First glue inlet; 62. Second conductive part; 63. Connecting part;

[0045] 7. Gap;

[0046] 8. Cables. Detailed Implementation

[0047] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In the description of this utility model, unless otherwise expressly 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.

[0050] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] like Figures 1-3 As shown, this utility model embodiment provides a photovoltaic junction box for adapting to photovoltaic modules using quad-segment technology, that is, the photovoltaic junction box can connect four busbars 100 on the photovoltaic module.

[0052] The photovoltaic junction box includes a box body 1 and a conductive sheet, a first diode 2, and a second diode 3 disposed within the box body 1. The first diode 2 and the second diode 3 are spaced apart along the length direction of the box body 1 (i.e., the X-axis direction in the diagram). The connection ends 101 of the four busbars 100 extend into the box body 1 and are conductively connected to the conductive sheet. Two of the four busbars 100 are distributed along the width direction of the box body 1 (i.e., the Y-axis direction in the diagram), and the remaining two busbars 100 are distributed along the length direction of the box body 1. The two busbars 100 distributed along the length direction of the box body 1 do not coincide with the projections of the first diode 2 and the second diode 3 onto the depth direction of the box body 1 (i.e., the Z-axis direction in the diagram).

[0053] That is, the two busbars 1 distributed along the length of the housing 1 are staggered with the first diode 2 and the second diode 3 in the width direction of the housing 1, respectively. Specifically, the two busbars 100 distributed along the length of the housing 1 are arranged such that one busbar 100 and the first diode 2 are located on one side of the housing 1 along its length, and the two are staggered in the width direction of the housing 1; the other busbar 100 and the second diode 3 are located on the other side of the housing 1 along its length, and the two are staggered in the width direction of the housing 1.

[0054] This photovoltaic junction box avoids the impact of the first diode 2 and the second diode 3 on the two busbars 100 distributed along the length of the box body 1 when the temperature of the two busbars 100 is too high. This avoids local high temperature in the busbars 100, makes the heat distribution in the box body 1 uniform, and allows the busbars 100 to quickly conduct the heat from the conductive sheet, thus improving the heat dissipation effect.

[0055] Specifically, the first diode 2 has two first pins 21, and the second diode 3 has two second pins 31. The conductive sheet includes a first conductive sheet 4, a second conductive sheet 5, and a third conductive sheet 6. The two first pins 21 are electrically connected to the first conductive sheet 4 and the third conductive sheet 6, respectively, and the two second pins 31 are electrically connected to the second conductive sheet 5 and the third conductive sheet 6, respectively. This structure allows the heat generated by the first diode 2 to be transferred to the first conductive sheet 4 and the third conductive sheet 6 through the two first pins 21, and also allows the heat generated by the second diode 3 to be transferred to the second conductive sheet 5 and the third conductive sheet 6 through the two second pins 31. Furthermore, the connection ends 101 of the two busbars 100 distributed along the length of the housing 1 are electrically connected to the first conductive sheet 4 and the second conductive sheet 5, respectively; the remaining two busbars 100 are distributed along the width of the housing 1 and are both electrically connected to the third conductive sheet 6. This structure allows the two busbars 100 along the length of the housing 1 to conduct heat from the first conductive sheet 4 and the second conductive sheet 5, respectively, and the two busbars 100 along the width of the housing 1 to conduct heat from the third conductive sheet 6, respectively.

[0056] In this embodiment, two first pins 21 are welded to the first conductive sheet 4 and the third conductive sheet 6, respectively; two second pins 31 are welded to the second conductive sheet 5 and the third conductive sheet 6, respectively; two busbars 100 distributed along the length of the housing 1 are welded to the first conductive sheet 4 and the second conductive sheet 5, respectively; two busbars 100 distributed along the width of the housing 1 are both welded to the third conductive sheet 6, or two busbars 100 distributed along the width of the housing 1 are welded to each other, and one of the busbars 100 is welded to the third conductive sheet 6.

[0057] Furthermore, such as Figure 4 As shown, both the first conductive sheet 4 and the second conductive sheet 5 have notches 7 on one side along the width direction of the housing 1. The first diode 2 and the second diode 3 are respectively disposed within the two notches 7. The two busbars 100 distributed along the length direction of the housing 1 do not coincide with the projections of the two notches 7 in the depth direction of the housing 1. That is, along the width direction of the housing 1, the busbars 100 and the corresponding notches 7 are staggered. By creating notches 7 on the first conductive sheet 4 and the second conductive sheet 5, the first diode 2 and the second diode 3 can be distributed along the width direction of the housing 1 close to the side of the housing 1, making the structure compact. Furthermore, the proximity of the first diode 2 and the second diode 3 to the side of the housing 1 allows some of the heat from the first diode 2 and the second diode 3 to be dissipated through the housing 1, improving heat dissipation capacity.

[0058] Specifically, the third conductive sheet 6 includes a first conductive part 61 and a second conductive part 62 that are interconnected. The first conductive part 61 and the second conductive part 62 are connected by a connecting part 63. The first conductive part 61, the first conductive sheet 4, the second conductive part 62, and the second conductive sheet 5 are distributed sequentially at intervals. The first diode 2 is disposed in the notch 7 of the first conductive sheet 4 and is located between the first conductive part 61 and the first conductive sheet 4. Its two first pins 21 are electrically connected to the first conductive part 61 and the first conductive sheet 4 respectively (i.e., welded). The second diode 3 is disposed in the notch 7 of the second conductive sheet 5 and is located between the second conductive part 62 and the second conductive sheet 5. Its two second pins 31 are electrically connected to the second conductive part 62 and the second conductive sheet 5 respectively (i.e., welded). By setting the third conductive sheet 6 as an interconnected first conductive part 61 and second conductive part 62, it is more convenient to connect the first diode 2 and the second diode 3 to the third conductive sheet 6, and the overall component layout is more reasonable.

[0059] Optionally, such as Figure 5 As shown, the first conductive part 61 has bent edges 611 on the three sides other than the side edge facing the first diode 2. By providing multiple bent edges 611 on the first conductive part 61, the heat dissipation area can be increased, thereby improving the heat dissipation efficiency.

[0060] To further improve the heat dissipation capacity of this photovoltaic junction box, refer to... Figure 2The first pin 21 near the second diode 3 coincides with the projection of a busbar 100 (located on the same side as the first diode 2 along the length of the housing 1) in the depth direction of the housing 1; the second pin 31 near the first diode 2 coincides with the projection of the busbar 100 in the depth direction of the housing 1 along the width direction of the housing 1. This structure, by placing a portion of the first pin 21 below the corresponding busbar 100 and a portion of the second pin 31 below the corresponding busbar 100, reduces heat transfer time, allowing the first diode 2 and the second diode 3 to quickly transfer heat to the corresponding busbar 100 through the first pin 21 and the second pin 31 respectively, effectively improving heat dissipation efficiency.

[0061] Optionally, the first pin 21 near the second diode 3 and the second pin 31 near the first diode 2 can be bent so that the projected portions of the first pin 21 and the corresponding busbar 100 in the depth direction of the housing 1 coincide, and the projected portions of the second pin 31 and the corresponding busbar 100 in the depth direction of the housing 1 also coincide. Simultaneously, the other first pin 21 and the other second pin 31 are also bent, increasing the contact area between the other first pin 21 and the first conductive part 61, and increasing the contact area between the other second pin 31 and the second conductive sheet 5, resulting in higher heat transfer efficiency.

[0062] Optionally, a partition plate 11 is provided inside the housing 1, which is sandwiched between the first conductive part 61 and the first conductive sheet 4. The partition plate 11 can prevent the first conductive part 61 and the first conductive sheet 4 from contacting each other. Specifically, slots are provided on the opposite sides of the first conductive part 61 and the first conductive sheet 4, and the partition plate 11 is confined within the two slots.

[0063] Optionally, the first conductive part 61 has two first potting ports 612 on one side of the box body 1 along the width direction of the box body 1, and potting can be achieved through the two first potting ports 612; and when the second diode 3 is disposed in the notch 7 of the second conductive sheet 5, there are also two second potting ports 51 between the second diode 3 and the second conductive sheet 5, which can also achieve potting.

[0064] To facilitate the welding of the connection ends 101 of the two busbars 100 along the length of the box body 1 to the first conductive sheet 4 and the second conductive sheet 5, respectively, and to avoid interference between the welding head of the welding equipment and the side wall of the box body 1, optionally, two outwardly protruding grooves 15 are provided on the side wall of the box body 1 near the busbars 100 along its width direction. The two grooves 15 correspond to the connection ends 101 of the two busbars 100 respectively (i.e., correspond to the first guide groove 12 and the second guide groove 13 mentioned below), and the two grooves 15 can respectively avoid the two welding heads. In addition, by providing the groove structure 15 on the side wall of the box body 1, the structural strength of the box body 1 can also be increased; furthermore, the grooves 15 can also be used for potting.

[0065] The first glue-filling port 612, the second glue-filling port 51, and the raised groove 15 can all be used to fill glue, making the glue filling in the box 1 more uniform and more complete.

[0066] Optionally, such as Figure 6 and combined Figure 1 As shown, the box body 1 is also provided with three first guide grooves 12, second guide grooves 13, and third guide grooves 14, which correspond to the second conductive portions 62 of the first conductive sheet 4, the second conductive sheet 5, and the third conductive sheet 6, respectively. The first guide groove 12 corresponding to the first conductive sheet 4 and the second guide groove 13 corresponding to the second conductive sheet 5 are distributed at intervals along the length direction of the box body 1 and are located between the first conductive sheet 4 and the second conductive sheet 5. The third guide groove 14 corresponding to the second conductive portion 62 is distributed along the width direction of the box body 1 and is located between the side wall of the box body 1 and the second conductive portion 62. The connecting ends 101 of the two busbars 100 distributed along the length direction of the box body 1 pass through the corresponding first guide grooves 12 and second guide grooves 13, and are respectively connected to the first conductive sheet 4 and the second conductive sheet 5. Electrical connection: Two busbars 100 pass through the bottom of the housing 1 into the first guide groove 12 and the second guide groove 13 and are respectively welded to the upper side of the first conductive sheet 4 and the second conductive sheet 5. After the two busbars 100 distributed along the width direction of the housing 1 are welded together, one of the busbars 100 passes through the third guide groove 14 corresponding to the second conductive part 62 and is electrically connected to the second conductive part 62 of the third conductive sheet 6. That is, the two busbars 100 are welded together, and the connecting end 101 of one of the busbars 100 passes through the corresponding third guide groove 14 from the bottom of the housing 1 and is welded to the upper side of the second conductive part 62. By providing the first guide groove 12, the second guide groove 13 and the third guide groove 14 in the housing 1, the connection operation of the busbars 100 is convenient.

[0067] Specifically, the first guide groove 12 is composed of two spaced first vertical plates 121 disposed on the box body 1. The height of the first vertical plate 121 away from the first conductive sheet 4 (i.e., along the depth direction of the box body 1) is equal to the height of the first conductive sheet 4 and is higher than the first vertical plate 121 near the first conductive sheet 4. The second guide groove 13 is composed of two spaced second vertical plates 131 disposed on the box body 1. The height of the second vertical plate 131 away from the second conductive sheet 5 is equal to the height of the second conductive sheet 5 and is higher than the second vertical plate 131 near the second conductive sheet 5. The third guide groove 14 is composed of two spaced third vertical plates 141 disposed on the box body 1. The height of the third vertical plate 141 away from the second conductive part 62 is equal to the height of the second conductive part 62 and is higher than the third vertical plate 141 near the second conductive part 62. When the welding head welds the busbar 100 to the first conductive sheet 4, the welding head simultaneously abuts against the first conductive sheet 4 and the first vertical plate 121 away from the first conductive sheet 4, so that the first vertical plate 121 can play a supporting role; when the welding head welds the busbar 100 to the second conductive sheet 5, the welding head simultaneously abuts against the second conductive sheet 5 and the second vertical plate 131 away from the second conductive sheet 5, so that the second vertical plate 131 can play a supporting role; when the welding head welds the busbar 100 to the second conductive part 62, the welding head simultaneously abuts against the second conductive part 62 and the third vertical plate 141 away from the second conductive part 62, so that the third vertical plate 141 can play a supporting role; this structure makes the welding operation more convenient and the connection more secure.

[0068] Two first pins 21 are respectively soldered to the lower side of the first conductive part 61 and the first conductive sheet 4, and two second pins 31 are respectively soldered to the lower side of the second conductive part 62 and the second conductive sheet 5.

[0069] like Figure 7 and combined Figure 1 As shown, the photovoltaic junction box also includes a cable 8, which is electrically connected to the lower side of the second conductive sheet 5, and the cable 8 is in contact with the second pin 31. That is, the second pin 31 is soldered to the second conductive sheet 5, and the cable 8 is soldered to the second pin 31. This structural design allows some of the heat generated by the second diode 3 to be transferred to the cable 8 through the second pin 31, and the cable 8 conducts the heat out of the box body 1, further improving the heat dissipation efficiency.

[0070] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A photovoltaic junction box, characterized in that, Used to connect four busbars (100); The photovoltaic junction box includes a box body (1) and a conductive sheet, a first diode (2) and a second diode (3) disposed in the box body (1). The first diode (2) and the second diode (3) are spaced apart along the length of the box body (1) and are conductively connected to the conductive sheet. The connection ends (101) of the four busbars (100) extend into the box body (1) and are conductively connected to the conductive sheet. Two of the busbars (100) are distributed along the width direction of the housing (1), and the other two busbars (100) are distributed along the length direction of the housing (1). The two busbars (100) distributed along the length direction of the housing (1) are respectively offset from the first diode (2) and the second diode (3) in the width direction of the housing (1).

2. The photovoltaic junction box according to claim 1, characterized in that, The first diode (2) has two first pins (21), and the second diode (3) has two second pins (31); The conductive sheet includes a first conductive sheet (4), a second conductive sheet (5) and a third conductive sheet (6). The two first pins (21) are electrically connected to the first conductive sheet (4) and the third conductive sheet (6) respectively, and the two second pins (31) are electrically connected to the second conductive sheet (5) and the third conductive sheet (6) respectively. The connecting ends (101) of the two busbars (100) distributed along the length direction of the box (1) are electrically connected to the first conductive sheet (4) and the second conductive sheet (5), respectively; the two busbars (100) distributed along the width direction of the box (1) are electrically connected to the third conductive sheet (6).

3. The photovoltaic junction box according to claim 2, characterized in that, The first conductive sheet (4) and the second conductive sheet (5) are provided with notches (7) on one side along the width direction of the box body (1), and the first diode (2) and the second diode (3) are respectively disposed in the two notches (7); The two busbars (100) distributed along the length of the box (1) are offset from the two gaps (7) in the width direction of the box (1).

4. The photovoltaic junction box according to claim 2, characterized in that, The projection of the first pin (21) near the second diode (3) and a busbar (100) distributed along the length direction of the housing (1) in the depth direction of the housing (1) coincides; The projection of the second pin (31) near the first diode (2) and the busbar (100) distributed along the width direction of the housing (1) in the depth direction of the housing (1) coincides.

5. The photovoltaic junction box according to claim 2, characterized in that, The third conductive sheet (6) includes a first conductive part (61) and a second conductive part (62) that are connected to each other, and the first conductive part (61), the first conductive sheet (4), the second conductive part (62) and the second conductive sheet (5) are distributed in sequence at intervals; The first diode (2) is disposed between the first conductive part (61) and the first conductive sheet (4), and the two first pins (21) are electrically connected to the first conductive part (61) and the first conductive sheet (4) respectively. The second diode (3) is disposed between the second conductive part (62) and the second conductive sheet (5), and the two second pins (31) are electrically connected to the second conductive part (62) and the second conductive sheet (5) respectively. The two busbars (100) distributed along the width direction of the box body (1) are electrically connected to the second conductive part (62).

6. The photovoltaic junction box according to claim 5, characterized in that, The first conductive part (61) has a bent edge (611) on the other three sides except the side edge facing the first diode (2).

7. The photovoltaic junction box according to claim 5, characterized in that, The box body (1) is provided with a partition plate (11), which is sandwiched between the first conductive part (61) and the first conductive sheet (4).

8. The photovoltaic junction box according to claim 2, characterized in that, The box body (1) is also provided with a first guide groove (12) corresponding to the first conductive sheet (4), a second guide groove (13) corresponding to the second conductive sheet (5) and a third guide groove (14) corresponding to the third conductive sheet (6); The connecting ends (101) of the two busbars (100) distributed along the length direction of the box (1) are respectively inserted into the first guide groove (12) and the second guide groove (13), and are electrically connected to the first conductive sheet (4) and the second conductive sheet (5) respectively; Two busbars (100) distributed along the width direction of the box body (1) are connected to each other, and the connecting end of one of the two busbars (100) distributed along the width direction of the box body (1) passes through the third guide groove (14) and is electrically connected to the third conductive sheet (6).

9. The photovoltaic junction box according to claim 8, characterized in that, The first guide groove (12) is composed of two spaced first vertical plates (121) disposed on the box body (1). The height of the first vertical plate (121) away from the first conductive sheet (4) is equal to the height of the first conductive sheet (4) and both are higher than the first vertical plate (121) close to the first conductive sheet (4). The second guide groove (13) is composed of two spaced second vertical plates (131) disposed on the box body (1). The height of the second vertical plate (131) away from the second conductive sheet (5) is equal to the height of the second conductive sheet (5) and both are higher than the second vertical plate (131) close to the second conductive sheet (5). The third guide groove (14) is composed of two spaced third vertical plates (141) disposed on the box body (1). The height of the third vertical plate (141) away from the third conductive sheet (6) is equal to the height of the third conductive sheet (6) and both are higher than the third vertical plate (141) close to the third conductive sheet (6).

10. The photovoltaic junction box according to claim 2, characterized in that, The photovoltaic junction box also includes a cable (8), which is electrically connected to the second conductive sheet (5), and the cable (8) is in contact with the second pin (31).

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