CN216216756U - Wiring device of solar cell module - Google Patents

Abstract

The utility model discloses a wiring device of a solar cell module, which comprises: the first module diode is installed in the first junction box and connected with the bottom of the first junction box, and a first bus bar through hole, a second bus bar through hole and a third bus bar through hole are formed in the bottom of the first junction box; a second module diode is arranged in the second junction box and connected with the bottom of the second junction box, and a fourth bus bar through hole and a fifth bus bar through hole are formed in the bottom of the second junction box; the first junction box and the second junction box are connected by a third bus bar. According to the utility model, the two junction boxes are arranged, and the plurality of bus bar through holes are formed in each junction box, so that the junction device disclosed by the utility model can be suitable for a solar cell module with a new structure, the length of bus bar access is shortened as much as possible, the loss is reduced, and the output power of the solar cell module is favorably improved.

Description

Wiring device of solar cell module

Technical Field

The utility model relates to the technical field of solar cell modules, in particular to a wiring device of a solar cell module.

Background

Solar cell modules (also called solar panels and photovoltaic modules) are core parts in solar power generation systems and are the most important parts in the solar power generation systems. The solar cell module is generally composed of a high-efficiency single crystal/polycrystalline solar cell, low-iron super white textured tempered glass, packaging materials (EVA, POE and the like), a functional back plate, an interconnection bar, a bus bar, a junction box and an aluminum alloy frame.

The photovoltaic junction box is a connecting device between a solar cell array formed by solar cell modules and the solar charging control device, and is mainly used for connecting and protecting the solar cell modules, connecting electric power generated by the solar cells with an external circuit and conducting current generated by the photovoltaic modules.

In a conventional solar cell module, solar cell panels are connected in series to form a solar cell string, and then the solar cell strings are connected in parallel to form the solar cell module, in this scheme, the solar cell panels are, for example, square blocks of 21cm × 21cm, but the output power of the solar cell module formed by this scheme is low. Therefore, a new split solar cell module is generated (as shown in fig. 1), the original 21cm × 21cm solar cell panel is firstly split into four identical blocks, then the four blocks are connected in series by using grid bands to form a string, and then the strings are connected in parallel. Since the connection mode of the new solar cell module is changed, the existing junction box cannot be applied, and therefore, a wiring device suitable for the new solar cell module needs to be designed.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the technical problem that an existing junction box cannot be suitable for a solar cell module with a new structure is solved. The utility model provides a wiring device of a solar cell module, which comprises a first junction box and a second junction box, wherein three bus bar through holes are formed in the bottom of the first junction box, two bus bar through holes are formed in the bottom of the second junction box, and a new connection mode can be provided for the solar cell module with a new structure.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a wiring device of a solar cell module is applied to the solar cell module, and the solar cell module at least comprises a first bus bar, a second bus bar, a third bus bar and a fourth bus bar. The wiring device includes: the first module diode is installed in the first junction box and connected with the bottom of the first junction box, a first bus bar through hole, a second bus bar through hole and a third bus bar through hole are formed in the bottom of the first junction box, one end of the first bus bar penetrates through the first bus bar through hole and is connected with the first module diode, the second bus bar penetrates through the second bus bar through hole and is connected with the first module diode, and one end of the third bus bar penetrates through the third bus bar through hole and is connected with the first module diode; the second module diode is installed in the second junction box and connected with the bottom of the second junction box, a fourth bus bar through hole and a fifth bus bar through hole are formed in the bottom of the second junction box, the other end of the third bus bar penetrates through the fourth bus bar through hole and is connected with the second module diode, and one end of the fourth bus bar penetrates through the fifth bus bar through hole and is connected with the second module diode; the first junction box and the second junction box are connected through the third bus bar. According to the utility model, the two junction boxes are arranged, and the plurality of bus bar through holes are formed in each junction box, so that the junction device disclosed by the utility model can be suitable for a solar cell module with a new structure, the length of bus bar access is shortened as much as possible, the loss is reduced, and the output power of the solar cell module is favorably improved.

Furthermore, the first module diode comprises two first packaging diodes and a first conducting strip, the two first packaging diodes are connected with the first conducting strip, and the first conducting strip is fixed at the bottom of the first junction box.

Further, in order to enable the internal structure of the first junction box to be more compact and reduce the volume of the first junction box, a bus bar mounting part is arranged in the middle of the bottom of the first junction box, and the first bus bar through hole, the second bus bar through hole and the third bus bar through hole are formed in the bus bar mounting part.

Further, a central line of the bus bar installation part perpendicular to the length direction of the first junction box is taken as a central line A, two fixing parts are arranged at the bottom of the first junction box, and the two fixing parts are symmetrically arranged left and right along the central line A; the two first packaged diodes are symmetrically arranged left and right along the central line A.

Furthermore, in order to shorten the length of the bus bar connected into the first junction box, the junction device further comprises a first jumper and a second jumper, the first jumper is fixed on one fixing part, and the second jumper is fixed on the other fixing part; one end of the first jumper is connected with the first conducting strip, the other end of the first jumper is abutted against the bus bar mounting part, and two ends of the first jumper are located on two opposite sides of one first packaged diode; one end of the second jumper is abutted against the bus bar mounting part, the other end of the second jumper is connected with the first conducting strip, and two ends of the second jumper are located on the other two opposite sides of the first packaged diode.

Furthermore, in order to connect the second bus bar conveniently, the first conducting strip is provided with a folded edge, the folded edge abuts against the bus bar mounting part, and one side of the folded edge is aligned to the edge of the through hole of the second bus bar.

Furthermore, in order to facilitate connection of the bus bar, the other end of the first jumper is provided with a first flanging, and one end of the second jumper is provided with a second flanging.

Furthermore, the second module diode comprises a second packaging diode and a second conducting strip, the second packaging diode is fixed on the second conducting strip, and the second conducting strip is fixed at the bottom of the second junction box.

Furthermore, the second conductive sheet is provided with a first through hole and a second through hole, the first through hole and the second through hole are located on two opposite sides of the second packaged diode, the first through hole is aligned with the fourth bus bar through hole, and the second through hole is aligned with the fifth bus bar through hole.

Furthermore, in order to facilitate connection of the bus bar, two ends of the second conductive sheet are respectively provided with a first bending part and a second bending part, the first bending part and the second bending part are located on two opposite sides of the second packaged diode, and the first bending part and the second bending part extend in a direction away from the bottom of the second junction box; the first conducting strip is provided with a third bending part, the third bending part is located above the second bus bar through hole, and the third bending part extends towards the direction far away from the bottom of the first junction box.

The wiring device has the advantages that the wiring device comprises the first wiring box and the second wiring box, three bus bar through holes are formed in the first wiring box, two bus bar through holes are formed in the second wiring box, and the directions of the three bus bar through holes in the first wiring box are designed, so that the wiring device can be suitable for a new wire outlet mode of four bus bars of a solar cell module, is convenient to install and simple to operate, and can be beneficial to improving the output power of the solar cell module.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of a solar cell module to which the present invention is applied.

Fig. 2 is a schematic view of the connection of the solar cell module and the junction box to which the present invention is applied.

Fig. 3 is a schematic view of a first junction box of the present invention.

Fig. 4 is a schematic view of a second junction box of the present invention.

Fig. 5 is a schematic structural diagram of a first module diode according to the present invention.

Fig. 6 is a schematic view of a structure of the bus bar mounting part of the present invention.

Fig. 7 is a top view of the first junction box of the present invention.

Fig. 8 is a cross-sectional view of a first junction box of the present invention.

Fig. 9 is a schematic structural diagram of a second module diode according to the present invention.

Fig. 10 is another structural schematic diagram of the first junction box of the present invention.

Fig. 11 is another structural schematic diagram of the second junction box of the present invention.

Fig. 12 is a cross-sectional view of another structure of the first junction box of the present invention.

In the figure:

1. the first bus bar, 2, the second bus bar, 3, the third bus bar, 4, the fourth bus bar, 5, the first junction box, 6, the first module diode, 7, the second junction box, 8, the second module diode, 9, the first jumper wire, 10, the second jumper wire, 51, the first bus bar through hole, 52, the second bus bar through hole, 53, the third bus bar through hole, 54, the bus bar mounting part, 55, the fixing part, 61, the first package diode, 62, the first conductive sheet, 71, the fourth bus bar through hole, 72, the fifth bus bar through hole, 81, the second package diode, 82, the second conductive sheet, 621, the hem, 622, the third bending part, 821, the first perforation, 822, the second perforation, 823, the first bending part, 824, the second bending part, 91, the first hem, 101, and the second hem.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 provides an example of a new arrangement of solar modules. Each small square represents one fourth of a complete solar cell panel, grid bands can be adopted among four small squares which are transversely arranged to be connected in series to form a cell string, the size of the selected grid band is smaller and smaller, the shielding of the surface of the cell panel can be reduced as much as possible, meanwhile, the grid bands are used for collecting current, and the more the grid bands are, the more the collected current is. The two battery strings can be connected in parallel through the bus bar to form a battery string pair, and the two battery string pairs can also be connected in parallel to form a solar battery assembly. The solar cell module is also required to be connected with a junction box, and the junction box can collect current generated by the solar cell module. The solar module shown in fig. 1 includes at least a first bus bar 1, a second bus bar 2, a third bus bar 3, and a fourth bus bar 4, which are used to access the inside of the junction box. For example, the first bus bar 1, the third bus bar 3, and the fourth bus bar 4 are vertically arranged, and the second bus bar 2 is horizontally arranged. Wherein G1 to G5 respectively indicate positions where the bus bars are inserted into the junction box. Fig. 2 shows a schematic view of the first and second junction boxes 5 and 7 connecting to the solar module.

Example one

As shown in fig. 3 to 9, the wiring device includes a first terminal block 5 and a second terminal block 7, and the first terminal block 5 and the second terminal block 7 are connected by a third bus bar 3. The first module diode 6 is installed in the first junction box 5, the first module diode 6 is connected (for example, clamped or welded) to the bottom of the first junction box 5, the bottom of the first junction box 5 is provided with a first bus bar through hole 51, a second bus bar through hole 52 and a third bus bar through hole 53, one end (G1 end) of the first bus bar 1 passes through the first bus bar through hole 51 to be connected to the first module diode 6, the second bus bar 2(G2 end) passes through the second bus bar through hole 52 to be connected to the first module diode 6 (for example, an L-shaped bus bar sheet is welded to G2 of the second bus bar 2, then the free end of the L-shaped bus bar sheet passes through the second bus bar through hole 52 to be connected to the first module diode 6), and one end (G3 end) of the third bus bar 3 passes through the third bus bar through hole 53 to be connected to the first module diode 6. In the present embodiment, the first bus bar through hole 51, the second bus bar through hole 52, and the third bus bar through hole 53 are, for example, rectangular, and since the first bus bar 1 and the third bus bar 3 are vertically disposed and the second bus bar 2 is horizontally disposed, for example, the center lines of the first bus bar through hole 51 and the third bus bar through hole 53 in the length direction are perpendicular to the center line of the first junction box 5 in the length direction, and the center line of the second bus bar through hole 52 in the length direction is parallel to the center line of the first junction box 5 in the length direction, so that the bus bars can be conveniently inserted.

A second module diode 8 is installed in the second junction box 7, the second module diode 8 is connected (for example, clamped or welded) with the bottom of the second junction box 7, a fourth bus bar through hole 71 and a fifth bus bar through hole 72 are arranged at the bottom of the second junction box 7, the other end (G4 end) of the third bus bar 3 passes through the fourth bus bar through hole 71 to be connected with the second module diode 8, and one end (G5 end) of the fourth bus bar 4 passes through the fifth bus bar through hole 72 to be connected with the second module diode 8. In the present embodiment, the fourth bus bar through hole 71 and the fifth bus bar through hole 72 may be rectangular, and since the third bus bar 3 and the fourth bus bar 4 are vertically arranged, for example, the center lines of the length directions of the fourth bus bar through hole 71 and the fifth bus bar through hole 72 are perpendicular to the center line of the length direction of the second junction box 7, in order to facilitate the penetration of the bus bars.

The first module diode 6 includes two first package diodes 61 and a first conductive plate 62, the two first package diodes 61 are connected (e.g., fixedly connected) to the first conductive plate 62, and the first conductive plate 62 is fixed to the bottom of the first junction box 5 (e.g., clamped or welded).

The first junction box 5 is provided with a bus bar mounting part 54 at the middle of the bottom thereof, and the bus bar mounting part 54 is provided with a first bus bar through hole 51, a second bus bar through hole 52 and a third bus bar through hole 53. In the present embodiment, the bus bar mounting portion 54 protrudes from the bottom of the first junction box 5, for example, the second bus bar through hole 52 is located between the first bus bar through hole 51 and the third bus bar through hole 53, and the periphery of the edge of each bus bar through hole is a plane, so that the bus bar is connected to the first conductive sheet 62 after penetrating.

The center line of the bus bar mounting part 54 perpendicular to the length direction of the first junction box 5 is taken as a center line a, two fixing parts 55 are arranged at the bottom of the first junction box 5, and the two fixing parts 55 are symmetrically arranged along the center line a. The two first packaged diodes 61 are arranged in bilateral symmetry along the center line a. The fixing portion 55 is, for example, a column shape, and extends in a direction away from the bottom of the first terminal box 5, and the first conductive sheet 62 is provided with a through hole for the fixing portion 55 to pass through.

The wiring device further comprises a first jumper wire 9 and a second jumper wire 10, wherein the first jumper wire 9 is fixed on one fixing part 55, and the second jumper wire 10 is fixed on the other fixing part 55. In this embodiment, the first jumper 9 and the second jumper 10 are both in a sheet shape, and the first jumper 9 and the second jumper 10 are, for example, installed above the first packaged diode 61 and attached to the upper surface of the first packaged diode 61. One end (left end) of the first jumper 9 is connected (for example, welded) to the first conductive sheet 62, the other end (right end) of the first jumper 9 abuts against the bus bar mounting portion 54 (for example, abuts against a plane at the edge of the first bus bar through hole 51, the other end of the first jumper 9 is as close as possible to the first bus bar through hole 51), and both ends of the first jumper 9 are located on opposite sides of one first encapsulated diode 61 (left encapsulated diode). One end (left end) of the second jumper wire 10 abuts against the bus bar mounting part 54 (for example, the plane abutting against the edge of the third bus bar through hole 53, one end of the second jumper wire 10 is as close as possible to the third bus bar through hole 53), the other end (right end) of the second jumper wire 10 is connected (for example, welded) to the first conductive sheet 62, and both ends of the second jumper wire 10 are located on opposite sides of the other first packaged diode 61 (the packaged diode on the right side). In the present embodiment, the left side of the first packaged diode 61 is a positive terminal, the right side is a negative terminal, the first jumper wire 9 is used for electrically connecting the first bus bar 1 and the left first packaged diode 61, the first bus bar 1 penetrates through the first bus bar through hole 51 and is then welded (e.g., soldered) to the right end of the first jumper wire 9, and the left end of the first jumper wire 9 is connected to the first conductive sheet 62. The second jumper wire 10 is used to electrically connect the third bus bar 3 and the right first packaged diode 61, the third bus bar 3 is inserted into the third bus bar through hole 53 and then welded (e.g., soldered) to the left end of the second jumper wire 10, and the right end of the second jumper wire 10 is connected to the first conductive sheet 62. That is, the first jumper wire 9 and the second jumper wire 10 are connected, so that the length of the first bus bar 1 and the third bus bar 3 penetrating into the first junction box 5 can be shortened as much as possible, and the loss can be reduced.

The first conductive plate 62 is provided with a flange 621, the flange 621 abuts against the bus bar mounting part 54 (for example, a plane abutting against the edge of the second bus bar through hole 52, the flange 621 is as close to the second bus bar through hole 52 as possible), and one side of the flange 621 aligns with the edge of the second bus bar through hole 52. In the present embodiment, the folded edge 621 is used to electrically connect with the second bus bar 2, and the folded edge 621 is as close to the second bus bar through hole 52 as possible, so that the length of the second bus bar 2 penetrating into the first junction box 5 can be shortened, and the loss can be reduced.

The second module diode 8 comprises a second packaged diode 81 and a second conductive plate 82, the second packaged diode 81 is fixed on the second conductive plate 82, and the second conductive plate 82 is fixed at the bottom of the second junction box 7. The second conductive sheet 82 is provided with a first through hole 821 and a second through hole 822, the first through hole 821 and the second through hole 822 are located at two opposite sides of the second package diode 81, the first through hole 821 is aligned with the fourth bus bar through hole 71, and the second through hole 822 is aligned with the fifth bus bar through hole 72. In the present embodiment, the first through hole 821 has the same shape as the fourth bus bar through hole 71, and the second through hole 822 has the same shape as the fifth bus bar through hole 72. The G4 end of the third bus bar 3 is welded (e.g., soldered) to the second conductive sheet 82 after passing through the fourth bus bar through hole 71 and the first through hole 821, and the G5 end of the fourth bus bar 4 is welded (e.g., soldered) to the second conductive sheet 82 after passing through the fifth bus bar through hole 72 and the second through hole 822.

The wiring device of the embodiment can be suitable for a new solar cell module, and is convenient to connect the four bus bars, so that the length of the bus bars is shortened as much as possible, loss is reduced, and the output power of the solar cell module is improved.

Example two

As shown in fig. 10, the second embodiment is different from the first embodiment in that the second bus bar through hole 52 on the bus bar mounting portion 54 is square, the other end (right end) of the first jumper 9 is further provided with a first flange 91), one end (left end) of the second jumper 10 is further provided with a second flange 101, and both the first flange 91 and the second flange 101 extend in a direction away from the bottom of the first junction box 5. In other words, the plane of the first flange 91 is perpendicular to the plane of the first bus bar through hole 51, and the plane of the second flange 101 is perpendicular to the third bus bar through hole 53, so that when the first bus bar 1 and the third bus bar 3 penetrate, the ends of the bus bars can be directly connected with the first jumper wire 9 and the second jumper wire 10 without bending (for example, resistance welding connection). The first conductive sheet 62 is provided with a third bending portion 622, the third bending portion 622 is located above the second bus bar through hole 52, the third bending portion 622 extends in a direction away from the bottom of the first junction box 5, and a plane of the third bending portion 622 is perpendicular to a plane of the second bus bar through hole 52, so that the second bus bar 2 can be directly connected with the third bending portion 622 when passing through, and the second bus bar 2 does not need to be bent, thereby improving the installation efficiency.

In the present embodiment, the second conductive sheet 82 is not provided with the first through hole 821 and the second through hole 822, and the fourth bus bar through hole 71 and the fifth bus bar through hole 72 are close to square. The two ends of the second conductive sheet 82 are respectively provided with a first bending portion 823 and a second bending portion 824, the first bending portion 823 and the second bending portion 824 are located at two opposite sides of the second package diode 81, and the first bending portion 823 and the second bending portion 824 extend in a direction away from the bottom of the second junction box 7. In other words, the plane where the first bending portion 823 is located is perpendicular to the plane where the fourth bus bar through hole 71 is located, the plane where the second bending portion 824 is located is perpendicular to the plane where the fifth bus bar through hole 72 is located, and the first bending portion 823 and the second bending portion 824 may be used to connect the third bus bar 3 and the fourth bus bar 4 (for example, by resistance welding), so that the portions of the third bus bar 3 and the fourth bus bar 4 penetrating into the second junction box 7 may be connected to the second conductive sheet 82 without bending, and the installation efficiency may be further improved.

The junction device of the embodiment can enable the first bus bar 1, the second bus bar 2, the third bus bar 3 and the fourth bus bar 4 to penetrate into the junction box without bending through the improvement of the structures of the first jumper 9, the second jumper 10, the first conducting strip 62 and the second conducting strip 82, and further improves the installation efficiency.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined by the scope of the claims.

Claims (10)

1. A wiring device of a solar cell module is applied to the solar cell module, the solar cell module at least comprises a first bus bar (1), a second bus bar (2), a third bus bar (3) and a fourth bus bar (4), and the wiring device is characterized by comprising:

the first junction box (5), a first module diode (6) is installed in the first junction box (5), the first module diode (6) is connected with the bottom of the first junction box (5), a first bus bar through hole (51), a second bus bar through hole (52) and a third bus bar through hole (53) are formed in the bottom of the first junction box (5), one end of the first bus bar (1) penetrates through the first bus bar through hole (51) to be connected with the first module diode (6), the second bus bar (2) penetrates through the second bus bar through hole (52) to be connected with the first module diode (6), and one end of the third bus bar (3) penetrates through the third bus bar through hole (53) to be connected with the first module diode (6);

a second junction box (7), a second module diode (8) is installed in the second junction box (7), the second module diode (8) is connected with the bottom of the second junction box (7), a fourth bus bar through hole (71) and a fifth bus bar through hole (72) are formed in the bottom of the second junction box (7), the other end of the third bus bar (3) penetrates through the fourth bus bar through hole (71) to be connected with the second module diode (8), and one end of the fourth bus bar (4) penetrates through the fifth bus bar through hole (72) to be connected with the second module diode (8);

the first junction box (5) and the second junction box (7) are connected through the third bus bar (3).

2. The solar module wiring device according to claim 1, wherein the first module diode (6) comprises two first package diodes (61) and a first conductive plate (62), the two first package diodes (61) are connected to the first conductive plate (62), and the first conductive plate (62) is fixed to the bottom of the first junction box (5).

3. The wiring device of the solar cell module according to claim 2, wherein a bus bar mounting portion (54) is provided at a bottom center of the first junction box (5), and the bus bar mounting portion (54) is provided with the first bus bar through hole (51), the second bus bar through hole (52), and the third bus bar through hole (53).

4. The wiring device of a solar cell module according to claim 3, wherein a center line of the bus bar mounting part (54) perpendicular to the length direction of the first junction box (5) is taken as a center line A, two fixing parts (55) are arranged at the bottom of the first junction box (5), and the two fixing parts (55) are symmetrically arranged along the center line A; the two first packaged diodes (61) are symmetrically arranged along the center line A from left to right.

5. The wiring device for solar cell module according to claim 4, further comprising a first jumper wire (9) and a second jumper wire (10), wherein the first jumper wire (9) is fixed to one of the fixing portions (55), and the second jumper wire (10) is fixed to the other fixing portion (55); one end of the first jumper (9) is connected with a first conducting strip (62), the other end of the first jumper (9) abuts against the bus bar mounting part (54), and two ends of the first jumper (9) are located on two opposite sides of one first packaged diode (61); one end of the second jumper (10) is abutted against the bus bar mounting part (54), the other end of the second jumper (10) is connected with the first conducting strip (62), and two ends of the second jumper (10) are located on the other two opposite sides of the first packaged diode (61).

6. The wiring device of a solar cell module according to claim 3, wherein the first conductive sheet (62) is provided with a flange (621), the flange (621) abuts on the bus bar mounting part (54), and one side of the flange (621) is aligned with an edge of the second bus bar through hole (52).

7. The solar cell module wiring device according to claim 5, wherein the other end of the first jumper wire (9) further has a first flange (91), and the one end of the second jumper wire (10) further has a second flange (101).

8. The solar module wiring device according to claim 2, wherein the second module diode (8) comprises a second package diode (81) and a second conductive plate (82), the second package diode (81) is fixed on the second conductive plate (82), and the second conductive plate (82) is fixed on the bottom of the second junction box (7).

9. The wiring device of claim 8, wherein the second conductive sheet (82) has a first through hole (821) and a second through hole (822), the first through hole (821) and the second through hole (822) are located on two opposite sides of the second encapsulated diode (81), the first through hole (821) is aligned with the fourth bus bar through hole (71), and the second through hole (822) is aligned with the fifth bus bar through hole (72).

10. The wiring device of the solar cell module according to claim 8, wherein a first bending part (823) and a second bending part (824) are respectively disposed at two ends of the second conductive sheet (82), the first bending part (823) and the second bending part (824) are located at two opposite sides of the second encapsulated diode (81), and the first bending part (823) and the second bending part (824) extend in a direction away from the bottom of the second junction box (7); the first conducting strip (62) is provided with a third bent portion (622), the third bent portion (622) is located above the second bus bar through hole (52), and the third bent portion (622) extends in a direction away from the bottom of the first junction box (5).

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