Photovoltaic junction box, photovoltaic module and photovoltaic power generation system

Abstract

The invention discloses a photovoltaic junction box, a photovoltaic module and a photovoltaic power generation system. The photovoltaic junction box comprises a shell, a plurality of first conductive pieces and at least one chip. The plurality of first conductive pieces are arranged in the shell, and the chip is electrically connected with the plurality of first conductive pieces. The first conductive piece and / or the chip and the shell are / is an integrally-formed piece. According to the photovoltaic junction box, the first conductive piece and / or the chip and the shell are integrally formed pieces. Therefore, heat generated in the operation process of the chip is dissipated through the first conductive part, the heat dissipation efficiency of the photovoltaic junction box is improved, the operation stability of the chip is improved, in addition, the structural stability of the photovoltaic junction box is improved, compared with a traditional photovoltaic junction box, the installation process of the photovoltaic junction box is simplified, and the installation cost of the photovoltaic junction box is reduced. The installation difficulty of the photovoltaic junction box is reduced, and the assembly efficiency is improved, so that the cost of the photovoltaic junction box is reduced, and meanwhile, the heat dissipation efficiency of the photovoltaic junction box can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic junction boxes, and in particular to a photovoltaic junction box, a photovoltaic component and a photovoltaic power generation system. Background Art

[0002] The photovoltaic junction box is the main component of the photovoltaic module. In the related technology, the photovoltaic junction box includes a box body, a base, a copper plate and a diode. When assembling the photovoltaic junction box, the diode and the copper sheet must be welded first, and then the copper plate and the base must be crimped. Finally, the base and the box body must be assembled and filled with glue. However, the assembly process of the above photovoltaic junction box is relatively complicated and costly, and the heat of the diode is transferred to the outside through the potting glue, and the heat conduction speed is slow, which makes the heat dissipation efficiency of the photovoltaic junction box poor. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the present invention is to provide a photovoltaic junction box, which improves the heat dissipation efficiency of the photovoltaic junction box, reduces the installation difficulty of the photovoltaic junction box, improves the assembly efficiency, and thus reduces the cost of the photovoltaic junction box.

[0004] The second objective of the present invention is to provide a photovoltaic assembly using the photovoltaic junction box.

[0005] The third object of the present invention is to provide a photovoltaic power generation system using the above photovoltaic junction box or photovoltaic module.

[0006] According to the first aspect of the present invention, the photovoltaic junction box comprises: a shell; a plurality of first conductive members, the plurality of first conductive members are arranged in the shell; and at least one chip, the chip being electrically connected to the plurality of first conductive members; the first conductive member and / or the chip are integrally formed with the shell.

[0007] According to the photovoltaic junction box of the embodiment of the present invention, the first conductive member and / or the chip and the shell are integrally formed. Therefore, the first conductive member is used to dissipate the heat generated by the chip during operation, thereby improving the heat dissipation efficiency of the photovoltaic junction box and the operational stability of the chip. In addition, the structural stability of the photovoltaic junction box is improved. Compared with the traditional photovoltaic junction box, the installation process of the photovoltaic junction box is simplified, the installation difficulty of the photovoltaic junction box is reduced, and the assembly efficiency is improved, thereby reducing the cost of the photovoltaic junction box and improving the heat dissipation efficiency of the photovoltaic junction box.

[0008] According to some embodiments of the present invention, there are multiple chips, and the multiple chips are respectively located on two sides of the shell, and the chips are plastic-sealed on the side walls of the shell.

[0009] According to some embodiments of the present invention, each of the first conductive members includes a first conductive segment; and a second conductive segment located on one side of the first conductive segment and bent relative to the first conductive segment.

[0010] According to some embodiments of the present invention, at least a portion of the second conductive segment is encapsulated in the side wall of the housing.

[0011] According to some embodiments of the present invention, a through hole is formed in the first conductive member, and the photovoltaic junction box further includes a second conductive member. One end of the second conductive member passes through the through hole and is connected to the first conductive member, and the other end of the second conductive member is adapted to be connected to a photovoltaic cell.

[0012] According to some embodiments of the present invention, the plurality of first conductive members include a positive conductive member and a negative conductive member, the plurality of chips include a first chip and a second chip, the first chip is provided on the positive conductive member and is electrically connected to the positive electrode of the first chip, and the negative electrode of the first chip is electrically connected to the negative conductive member through a connecting wire; the second chip is provided on the negative conductive member and is electrically connected to the negative electrode of the second chip, and the positive electrode of the second chip is electrically connected to the positive conductive member through the connecting wire.

[0013] According to some embodiments of the present invention, in a first direction, the length of the first conductive segment is the same as the length of the second conductive segment.

[0014] According to some embodiments of the present invention, the plurality of first conductive members include a first sub-conductive member and a second sub-conductive member. In a first direction, the length of the second conductive segment of the first sub-conductive member is greater than the length of the second conductive segment of the second sub-conductive member; the plurality of chips are respectively provided on the first sub-conductive member, and each chip is electrically connected to the second sub-conductive member through a connecting wire.

[0015] According to some embodiments of the present invention, in the first direction, the length of the first conductive segment of the first sub-conductive member is less than the length of the first conductive segment of the second sub-conductive member.

[0016] According to some embodiments of the present invention, the first conductive segment of the first sub-conductive member and the two second conductive segments jointly define a groove, and one end of the first conductive segment of the second sub-conductive member extends into the groove.

[0017] According to some embodiments of the present invention, the housing is injection molded with epoxy resin.

[0018] According to some embodiments of the present invention, the housing includes a housing body, one side of the housing body in the third direction is open; a cover body, the cover body is arranged on the open side of the housing body, the cover body and the housing body jointly define a receiving cavity, and a plurality of the first conductive members and a plurality of the chips are both arranged in the receiving cavity. A mating groove is formed on one of the cover body and the housing body, and a mating protrusion is arranged on the other of the cover body and the housing body, and the mating protrusion is fitted in the mating groove.

[0019] According to some embodiments of the present invention, the housing body includes a first sub-housing and a second sub-housing connected to each other. The open side is formed on one side of the first sub-housing away from the second sub-housing. The second conductive member passes through the second sub-housing and is connected to the first conductive member; wherein, the cross-sectional area of the second sub-housing is larger than the cross-sectional area of the first sub-housing.

[0020] The photovoltaic module according to the embodiment of the second aspect of the present invention includes the photovoltaic junction box according to the above-mentioned first aspect embodiment of the present invention.

[0021] The photovoltaic power generation system according to the embodiment of the third aspect of the present invention includes the photovoltaic junction box according to the above-mentioned first aspect embodiment of the present invention, or the photovoltaic module according to the above-mentioned second aspect embodiment of the present invention.

[0022] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0023] The above-mentioned and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is a schematic diagram of a photovoltaic junction box according to an embodiment of the present invention, in which the cover body and the second conductive member are not shown;

[0025] Figure 2 is Figure 1 a schematic diagram of another angle of the photovoltaic junction box shown in

[0026] Figure 3 is along Figure 2 sectional view taken along line A-A in

[0027] Figure 4 is along Figure 2 sectional view taken along line B-B in

[0028] Figure 5 is a sectional view of a photovoltaic junction box according to an embodiment of the present invention, in which the cover body is not shown;

[0029] Figure 6 Schematic diagram of the first conductive member and the chip of the photovoltaic junction box according to an embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the first conductive member and the chip of the photovoltaic junction box according to another embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the photovoltaic junction box according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] 100: Photovoltaic junction box;

[0034] 1: Housing; 11: Housing body; 111: Fitting projection; 112: First sub-housing; 113: Second sub-housing; 121: Fitting groove; 12: Cover; 13: Accommodation cavity; 2: First conductive member; 21: First conductive section; 22: Second conductive section; 23: Through hole; 24: Guide portion; 25: Guide channel; 26: Positive conductive member; 27: Negative conductive member; 28: First sub-conductive member; 281: Groove; 29: Second sub-conductive member; 3: Chip; 31: First chip; 32: Second chip; 4: Second conductive member; 5: Connecting wire. Detailed implementation manners

[0035] Next, refer to Figures 1-8 to describe the photovoltaic junction box 100 according to the embodiment of the first aspect of the present invention.

[0036] As Figures 1-8 shown, the photovoltaic junction box 100 according to the embodiment of the first aspect of the present invention includes a housing 1, a plurality of first conductive members 2, and at least one chip 3. In the description of the present invention, the meaning of "a plurality of" is two or more.

[0037] Specifically, the plurality of first conductive members 2 are provided in the housing 1, and the chip 3 is electrically connected to the plurality of first conductive members 2. The first conductive member 2 and / or the chip 3 and the housing 1 are integrally formed parts. Among them, only the first conductive member 2 and the housing 1 can be integrally formed parts; or, only the chip 3 and the housing 1 can be integrally formed parts; or, the first conductive member 2, the chip 3 and the housing 1 are integrally formed parts.

[0038] For example, in the example of Figures 1-5 , the housing 1 has a first direction (for example, the left-right direction in Figure 1 ), a second direction (for example, the front-back direction in Figure 1 ), and a third direction (for example, the up-down direction in Figure 1 ) that are orthogonal to each other. The plurality of first conductive members 2 are provided in the housing 1 along the first direction. The chip 3 is provided on the plurality of first conductive members 2, and the chip 3 is electrically connected to the first conductive members 2.

[0039] The chip 3 is electrically connected to the first conductive member 2, and the first conductive member 2 is used to dissipate the heat generated by the chip 3 during operation, thereby improving the operation stability of the chip 3. Among them, since the size of the first conductive member 2 is much larger than the size of the chip 3, when the heat of the chip 3 is transferred to the first conductive member 2, the first conductive member 2 can achieve rapid heat dissipation.

[0040] During the installation of the photovoltaic junction box 100, the chip 3 can be electrically connected to the first conductive member 2 after the multiple first conductive members 2 and the shell 1 are integrally formed; or, after the chip 3 and the shell 1 are integrally formed, multiple first conductive members 2 are installed in the shell 1 to complete the electrical connection between the multiple first conductive members 2 and the chip 3; or, after the multiple first conductive members 2 are arranged in sequence, the chip 3 is electrically connected to the first conductive member 2, and then the multiple first conductive members 2, the chip 3 and the shell 1 are integrally formed. Thus, while improving the structural stability of the photovoltaic junction box 100, compared with the traditional photovoltaic junction box, the installation process of the photovoltaic junction box 100 is simplified, the installation difficulty of the photovoltaic junction box 100 is reduced, and the assembly efficiency is improved, thereby reducing the cost of the photovoltaic junction box 100, and at the same time, the heat dissipation efficiency of the photovoltaic junction box 100 can be improved.

[0041] According to the photovoltaic junction box 100 of the embodiment of the present invention, the first conductive member 2 and / or the chip 3 are integrally formed with the housing 1. Therefore, the first conductive member 2 is used to dissipate the heat generated by the chip 3 during operation, thereby improving the heat dissipation efficiency of the photovoltaic junction box 100, improving the operational stability of the chip 3, and improving the structural stability of the photovoltaic junction box 100. Compared with the traditional photovoltaic junction box, the installation process of the photovoltaic junction box 100 is simplified, the installation difficulty of the photovoltaic junction box 100 is reduced, the assembly efficiency is improved, and the cost of the photovoltaic junction box 100 is reduced.

[0042] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 There are multiple chips 3, and the multiple chips 3 are respectively located on both sides of the housing 1. For example, a chip 3 is respectively provided on both sides of the second direction of the housing 1, and the heat generated by the chip 3 is guided out by using the side walls on both sides of the second direction of the housing 1, thereby improving the heat dissipation efficiency of the photovoltaic junction box 100. At the same time, the multiple chips 3 are arranged at intervals, which can effectively reduce the mutual interference of the chips 3 when they are heated, and avoid the heat generated by the multiple chips 3 from gathering, thereby improving the operation stability of the chip 3.

[0043] Further, refer to Figure 4, the chip 3 is potted on the side wall of the housing 1 so that each chip 3 is located between the first conductive member 2 and the housing 1. That is, along the second direction, one side of each chip 3 faces the first conductive member 2, and the other side of each chip 3 faces the housing 1, reducing the distance between each chip 3 and the first conductive member 2 and the housing 1. Thus, it is beneficial for heat to conduct from the chip 3 to the first conductive member 2 and the housing 1. The heat of the first conductive member 2 can be transferred to the outside through the potting glue in the housing 1, and at the same time, the housing 1 can directly exchange heat with the outside, thereby improving the heat dissipation efficiency of the photovoltaic junction box 100.

[0044] Furthermore, each first conductive member 2 includes a first conductive section 21 and a second conductive section 22. The second conductive section 22 is located on one side of the first conductive section 21 and is bent relative to the first conductive section 21. For example, in Figure 4 , Figure 6 and Figure 7 's examples, the first conductive section 21 extends along the first direction, and the two second conductive sections 22 are respectively located on both sides of the first conductive section 21 in the second direction, and each second conductive section 22 extends along the third direction, increasing the heat dissipation area of the first conductive member 2.

[0045] In addition, at least part of the second conductive section 22 is potted on the side wall of the housing 1. For example, in Figure 4 , Figure 6 and Figure 7 's examples, the cross-sectional shape of the first conductive member 2 is generally U-shaped. When the first conductive member 2 is installed in the housing 1, the first conductive section 21 faces the bottom of the housing 1, and the two second conductive sections 22 respectively face the two side walls of the housing 1 in the second direction. While increasing the heat dissipation area of the first conductive member 2, it ensures the installation stability of the first conductive member 2 in the housing 1. In addition, compared with the traditional photovoltaic junction box, the first conductive member 2 of the photovoltaic junction box 100 reduces the length of the photovoltaic junction box 100 in the second direction while meeting the heat dissipation requirements, thereby reducing the volume of the photovoltaic junction box 100 and improving the applicability of the photovoltaic junction box 100.

[0046] Among them, referring to Figure 4 , Figure 6 and Figure 7, a plurality of chips 3 are respectively arranged between two second conductive segments 22 and the housing 1. That is to say, some of the chips 3 are arranged between one of the two second conductive segments 22 and the housing 1, and the remaining chips 3 are arranged between the other of the two second conductive segments 22 and the housing 1, so as to increase the distance between the plurality of chips 3, thereby reducing the thermal interference between the plurality of chips 3, improving the heat dissipation performance of the photovoltaic junction box 100, prolonging the service life of the photovoltaic junction box 100, and at the same time reducing the distance between the chip 3 and the housing 1, so that the heat generated on the chip 3 can be quickly exported from the two side walls in the second direction of the housing 1, further improving the operation stability of the photovoltaic junction box 100.

[0047] According to some specific embodiments of the present invention, referring to Figures 1-3 , combined with Figures 5-7 , a through hole 23 is formed on the first conductive member 2. The photovoltaic junction box 100 further includes a second conductive member 4. One end of the second conductive member 4 passes through the through hole 23 and is connected to the first conductive member 2, and the other end of the second conductive member 4 is adapted to be connected to a photovoltaic cell. Along the first direction of the housing 1, two first conductive members 2 are spaced apart inside the housing 1, and the first conductive member 2 and the second conductive member 4 are electrically connected, so as to realize the electrical connection between the chip 3 and the second conductive member 4.

[0048] Optionally, each first conductive member 2 further includes two guiding portions 24. The two guiding portions 24 are both arranged on the other side of the first conductive segment 21 in the third direction. The two guiding portions 24 are respectively located on both sides of the through hole 23 in the first direction to define a guiding channel 25. The second conductive member 4 passes through the guiding channel 25 and the through hole 23 and is connected to the first conductive segment 21.

[0049] Specifically, one end of each guiding portion 24 is connected to the outside of the through hole 23, and the other end of each guiding portion 24 extends in a direction away from the first conductive member 2, so that the guiding channel 25 and the through hole 23 are opposite to each other, thereby facilitating the second conductive member 4 to pass through the bottom wall of the plastic package 1 and then pass through the guiding channel 25 and the through hole 23 in sequence and be connected to the first conductive member 2. With such a setting, the guiding channel 25 guides the second conductive member 4, improving the installation efficiency of the second conductive member 4, thereby avoiding damage to the second conductive member 4 during the installation process. Compared with the traditional photovoltaic junction box, the guiding structure is not provided on the housing 1, simplifying the structure of the housing 1.

[0050] Furthermore, referring to Figures 1-3 , combined with Figures 5-7, in the third direction, the cross-sectional area of the guiding channel 25 gradually increases along the direction away from the first conductive segment 21. That is to say, the shape of the cross-section of the guiding channel 25 is roughly trumpet-shaped, so that the opening at the end of the guiding channel 25 away from the first conductive member 2 is larger, which is conducive to the second conductive member 4 passing through the guiding channel 25 from the end away from the first conductive member 2, then entering the through hole 23, and finally passing through the through hole 23 to connect to the first conductive member 2, improving the connection efficiency between the second conductive member 2 and the first conductive member 2.

[0051] Furthermore, as Figure 5 and Figure 6 shown, the multiple first conductive members 2 include a positive conductive member 26 and a negative conductive member 27, and the multiple chips 3 include a first chip 31 and a second chip 32. The first chip 31 is provided on the positive conductive member 26 and is electrically connected to the positive electrode of the first chip 31. The negative electrode of the first chip 31 is electrically connected to the negative conductive member 27 through a connection wire 5; the second chip 32 is provided on the negative conductive member 27 and is electrically connected to the negative electrode of the second chip 32. The positive electrode of the second chip 32 is electrically connected to the positive conductive member 26 through a connection wire 5.

[0052] Referring to Figure 7 , along the second direction, the second conductive segment 22 on one side of the positive conductive member 26 is electrically connected to the positive electrode of the first chip 31 provided on the second conductive segment 22, and the second conductive segment 22 on the other side of the positive conductive member 26 is used to connect the positive electrode of the second chip 32; correspondingly, the second conductive segment 22 of the negative conductive member 27 corresponding to the first chip 31 is used to connect the negative electrode of the first chip 31, and the second conductive segment 22 of the negative conductive member 27 away from the first chip 31 is electrically connected to the negative electrode of the second chip 32 provided on the second conductive segment 22. With such a setting, the heat of the first chip 31 is mainly conducted to the positive conductive member 26, and then the heat is conducted to the housing 1 through the positive conductive member 26 for heat dissipation; the heat of the second chip 32 is mainly conducted to the negative conductive member 27, and then the heat is conducted to the housing 1 through the negative conductive member 27 for heat dissipation, so that heat interference between the first chip 31 and the second chip 32 can be avoided, and the heat dissipation performance and use stability of the photovoltaic junction box 100 can be improved.

[0053] In addition, in the first direction, the lengths of the first conductive segment 21 and the second conductive segment 22 are the same. With such a setting, the structural strength of the first conductive member 2 is increased, the positive conductive member 26 and the negative conductive member 27 bear substantially the same amount of heat, thus ensuring the uniformity of heat dissipation, and the structure of the first conductive member 2 is simple, which is conducive to the production of the first conductive member 2.

[0054] According to some specific embodiments of the present invention, the guiding channel 25 of the positive electrode conductive member 26 is disposed adjacent to the center of the housing 1, and / or the guiding channel 25 of the negative electrode conductive member 27 is disposed adjacent to the center of the housing 1. That is to say, only the guiding channel 25 of the positive electrode conductive member 26 can be disposed adjacent to the center of the housing 1 (not shown in the figure); or, only the guiding channel 25 of the negative electrode conductive member 27 can be disposed adjacent to the center of the housing 1 (not shown in the figure); or, while the guiding channel 25 of the positive electrode conductive member 26 is disposed adjacent to the center of the housing 1, the guiding channel 25 of the negative electrode conductive member 27 is also disposed adjacent to the center of the housing 1 (as Figure 5 and Figure 6 shown), at this time, the positive electrode conductive member 26 and the negative electrode conductive member 27 are symmetric about the center of the housing 1. Such a setting is conducive to the relative position of the housing 1 and the photovoltaic cell, thereby improving the efficiency of current transmission between the photovoltaic junction box 100 and the photovoltaic cell.

[0055] According to some specific embodiments of the present invention, referring to Figure 7 , the plurality of first conductive members 2 include a first sub-conductive member 28 and a second sub-conductive member 29. In the first direction, the length of the second conductive segment 22 of the first sub-conductive member 28 is greater than the length of the second conductive segment 22 of the second sub-conductive member 29. The plurality of chips 3 are respectively disposed on the first sub-conductive member 28, and each chip 3 is electrically connected to the second sub-conductive member 29 through a connecting wire 5. That is to say, when the length of the first conductive segment 21 of the first sub-conductive member 28 is the same as the length of the first conductive segment 21 of the second sub-conductive member 29, the heat dissipation area of the second conductive segment 22 of the first sub-conductive member 28 is greater than the heat dissipation area of the second conductive segment 22 of the second sub-conductive member 29. Optionally, the plurality of chips 3 are all disposed on the two second conductive segments 22 of the first sub-conductive member 28, so that most of the heat generated by the chips 3 is conducted to the first sub-conductive member 28, thereby improving the heat dissipation efficiency of the photovoltaic junction box 100. At the same time, the plurality of chips 3 are all disposed on the first sub-conductive member 28, and each chip 3 is connected to the second sub-conductive member 29 through a connecting wire 5, so that the electrical connection of the first sub-conductive member 28, the chip 3 and the second sub-conductive member 29 can be realized.

[0056] Furthermore, in the first direction, the length of the first conductive segment 21 of the first sub-conductive member 28 is less than the length of the first conductive segment 21 of the second sub-conductive member 29. Thus, the centers of gravity of the first sub-conductive member 28 and the second sub-conductive member 29 are approximately located in the middle of the housing 1, so as to improve the balance of the photovoltaic junction box 100 and avoid the inclination of the photovoltaic junction box 100 during use due to the large weight of the first sub-conductive member 28, thereby improving the use stability of the photovoltaic junction box 100.

[0057] Furthermore, the first conductive segment 21 and the two second conductive segments 22 of the first sub-conductive member 28 jointly define a groove 281, and one end of the first conductive segment 21 of the second sub-conductive member 29 extends into the groove 281. Thus, the first conductive segment 21 of the second sub-conductive member 29 and the first conductive segment 21 of the first sub-conductive member 28 are opposite to each other, and the two second conductive segments 22 of the second sub-conductive member 29 and the two second conductive segments 22 of the first sub-conductive member 28 are respectively opposite to each other, so that the first sub-conductive member 2 and the second sub-conductive member 4 can basically cover the interior of the housing 1, thereby improving the regularity of the first sub-conductive member 28 and the second sub-conductive member 29, and further facilitating the arrangement of the chip 3 between the first sub-conductive member 28 and the second sub-conductive member 29.

[0058] In addition, the guiding channel 25 of the first sub-conductive member 28 is arranged adjacent to the center of the housing 1, and / or the guiding channel 25 of the second sub-conductive member 29 is arranged adjacent to the center of the housing 1. That is to say, only the guiding channel 25 of the first sub-conductive member 28 is arranged adjacent to the center of the housing 1 (not shown in the figure); or, only the guiding channel 25 of the second sub-conductive member 29 is arranged adjacent to the center of the housing 1 (not shown in the figure); or, while the guiding channel 25 of the first sub-conductive member 28 is arranged adjacent to the center of the housing 1, the guiding channel 25 of the second sub-conductive member 29 is arranged adjacent to the center of the housing 1 (as Figure 7 shown). With such an arrangement, the second conductive member 4 is disposed at a position adjacent to the center of the housing 1, so that the housing 1 and the photovoltaic cell are opposite to each other, thereby improving the connection stability between the photovoltaic junction box 100 and the photovoltaic cell.

[0059] According to some specific embodiments of the present invention, the housing 1 is injection-molded with epoxy resin. The epoxy resin member has the advantages of high melting point, high hardness, and high insulation, and also has good permeability and adhesion. Using the epoxy resin member as the housing 1 enables the first conductive member 2, the chip 3, and the second conductive member 4 to be reliably fixed in the housing 1, and the epoxy resin layer can fill the small holes and gaps on the surfaces of the first conductive member 2, the chip 3, and the second conductive member 4, thereby enhancing the molding ability and structural strength of the photovoltaic junction box 100.

[0060] For example, during use, the chip 3 and the first conductive member 2 are connected to form an assembly. The above-mentioned assembly is placed in a mold, and epoxy resin is poured and molded under a low-temperature environment, that is, a housing 1 is formed outside the assembly to realize the support of the housing 1 for the above-mentioned assembly. Compared with traditional junction boxes, since there are no components such as traditional diodes and bases inside the housing 1, the internal structure of the housing 1 is simplified, thereby reducing the height of the housing 1, reducing processes such as welding the diode to the first conductive member 2 and riveting the first conductive member 2 to the base, and reducing the production difficulty of the photovoltaic junction box 100. At the same time, the formation of the housing 1 ensures the structural strength of the chip 3 and the first conductive member 2 inside the housing 1, avoiding deformation of the first conductive member 2 when the second conductive member 4 is connected to the first conductive member 2, thereby extending the service life of the photovoltaic junction box 100.

[0061] Optionally, potting glue is filled inside the housing 1 to improve the waterproof property of the photovoltaic junction box 100. Since the internal structure of the housing 1 is simple, it is beneficial for the potting glue to fully fill the inside of the housing 1, meeting the requirements for potting glue during the production of the photovoltaic junction box 100.

[0062] According to some specific embodiments of the present invention, referring to Figures 1-5 , combined with Figure 8 , the housing 1 includes a housing body 11 and a cover body 12. One side of the housing body 11 in the third direction is open. The cover body 12 is provided on the open side of the housing body 11. The cover body 12 and the housing body 11 jointly define a receiving cavity 13. A plurality of first conductive members 2 and a plurality of chips 3 are both provided in the receiving cavity 13. The cross-sectional shapes of the housing body 11 and the cover body 12 are both approximately rectangular, and the cover body 12 is detachably provided on the open side of the housing body 11. When the cover body 12 covers the open side of the housing body 11, the cooperation between the cover body 12 and the housing body 11 is beneficial for protecting the plurality of first conductive members 2 and the plurality of chips 3 in the receiving cavity 13, thereby improving the use stability of the photovoltaic junction box 100. When the cover is not provided on the housing body 11, it is convenient to connect the first conductive member 2 and the second conductive member 4 from the open side of the housing body 11, or to repair and maintain the first conductive member 2 and the chip 3 from the open side, thereby improving the use convenience of the photovoltaic junction box 100.

[0063] One of the cover body 12 and the housing body 11 is formed with a mating groove 121, and the other of the cover body 12 and the housing body 11 is provided with a mating protrusion 111, and the mating protrusion 111 is fitted in the mating groove 121. Among them, when the cover body 12 is formed with the mating groove 121, the housing body 11 is provided with the mating protrusion 111 (as shown in Figure 1 , Figure 2 and Figure 8 ); or, when the housing body 11 is formed with the mating groove 121, the cover body 12 is provided with the mating protrusion 111 (not shown in the figure). Referring to Figure 1 ,Figure 2 and Figure 8 On the shell body 11, a total of four mating protrusions 111 are provided. Among them, two mating protrusions 111 are provided on each of the two sides of the shell body 11 in the first direction, and the two mating protrusions 111 are spaced apart along the second direction of the shell body 11. Four mating grooves 121 are formed on the cover body 12. When the four mating protrusions 111 are fitted into the four mating grooves 121, the cover body 12 is stably connected to the shell body 11, improving the installation stability of the photovoltaic junction box 100.

[0064] Furthermore, the shell body 11 includes a first sub-shell 112 and a second sub-shell 113 connected to each other. An open side is formed on the side of the first sub-shell 112 away from the second sub-shell 113. The second conductive member 4 passes through the second sub-shell 113 and is connected to the first conductive member 2. Along the third direction, the second sub-shell 113 is provided on the side of the first sub-shell 112 away from the open side to seal the end of the first sub-shell 112. Among them, the cross-sectional area of the second sub-shell 113 is larger than that of the first sub-shell 112, improving the sealing stability of the second sub-shell 113 for the first sub-shell 112, as well as the support stability of the second sub-shell 113 for the first conductive member 2 and the chip 3, and the structural strength of the shell body 11, thereby extending the service life of the photovoltaic junction box 100.

[0065] A photovoltaic module (not shown in the figure) according to an embodiment of the second aspect of the present invention includes the photovoltaic junction box 100 according to the above-mentioned first aspect embodiment of the present invention.

[0066] By adopting the above-mentioned photovoltaic junction box 100, the heat dissipation efficiency of the photovoltaic module is improved, thereby improving the operation stability of the photovoltaic module, extending the service life of the photovoltaic module, and further enhancing the market competitiveness of the photovoltaic module.

[0067] A photovoltaic power generation system (not shown in the figure) according to an embodiment of the third aspect of the present invention includes the photovoltaic junction box 100 according to the above-mentioned first aspect embodiment of the present invention, or the photovoltaic module according to the above-mentioned second aspect embodiment of the present invention.

[0068] By adopting the above-mentioned photovoltaic junction box 100 or photovoltaic module, the thermal stability of the photovoltaic power generation system is improved, and the operation stability of the photovoltaic power generation system is enhanced.

[0069] The other components and operations of the photovoltaic junction box 100, photovoltaic module, and photovoltaic power generation system according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0071] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present application according to specific circumstances.

[0072] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0073] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic junction box, characterized in that, Comprising: A housing; A plurality of first conductive members, the plurality of first conductive members being disposed within the housing, At least one chip, the chip being electrically connected to the plurality of first conductive members; The first conductive member and / or the chip and the housing are integrally formed members.

2. The photovoltaic junction box according to claim 1, characterized in that, There are a plurality of the chips, the plurality of chips are respectively located on both sides of the housing, and the chips are encapsulated on the side wall of the housing.

3. The photovoltaic junction box according to claim 1, characterized in that, Each of the first conductive members includes: A first conductive segment; A second conductive segment, the second conductive segment being located on one side of the first conductive segment and being bent relative to the first conductive segment.

4. The photovoltaic junction box according to claim 3, characterized in that, At least a portion of the second conductive segment is encapsulated on the side wall of the housing.

5. The photovoltaic junction box according to claim 1, characterized in that, A through hole is formed in the first conductive member, The photovoltaic junction box further includes: A second conductive member, one end of the second conductive member passing through the through hole to be connected to the first conductive member, and the other end of the second conductive member being adapted to be connected to a photovoltaic cell.

6. The photovoltaic junction box according to claim 1, characterized in that, The plurality of first conductive members include a positive conductive member and a negative conductive member, and the plurality of chips include a first chip and a second chip, The first chip is provided on the positive conductive member and is electrically connected to the positive electrode of the first chip, and the negative electrode of the first chip is electrically connected to the negative conductive member through a connecting wire; the second chip is provided on the negative conductive member and is electrically connected to the negative electrode of the second chip, and the positive electrode of the second chip is electrically connected to the positive conductive member through the connecting wire.

7. The photovoltaic junction box according to claim 3, characterized in that, In a first direction, the length of the first conductive segment and the length of the second conductive segment are the same.

8. The photovoltaic junction box according to claim 1, characterized in that, The plurality of first conductive members include a first sub-conductive member and a second sub-conductive member, and in the first direction, the length of the second conductive segment of the first sub-conductive member is greater than the length of the second conductive segment of the second sub-conductive member; The plurality of chips are respectively disposed on the first sub-conductive member, and each chip is electrically connected to the second sub-conductive member through a connecting wire.

9. The photovoltaic junction box according to claim 8, characterized in that, In the first direction, the length of the first conductive segment of the first sub-conductive member is less than the length of the first conductive segment of the second sub-conductive member.

10. The photovoltaic junction box according to claim 9, characterized in that, The first conductive segment of the first sub-conductive member and the two second conductive segments jointly define a groove, One end of the first conductive segment of the second sub-conductive member extends into the groove.

11. The photovoltaic junction box according to any one of claims 1-10, characterized in that, The housing is injection molded with epoxy resin.

12. The photovoltaic junction box according to claim 1, characterized in that, The housing includes: A housing body, one side of the housing body in a third direction being open; A cover body, the cover body being disposed on the open side of the housing body, the cover body and the housing body jointly defining a receiving cavity, the plurality of first conductive members and the plurality of chips are all disposed in the receiving cavity, a fitting groove is formed on one of the cover body and the housing body, and a fitting protrusion is provided on the other of the cover body and the housing body, and the fitting protrusion is fitted in the fitting groove.

13. The photovoltaic junction box according to claim 12, characterized in that, The housing body includes a first sub-housing and a second sub-housing connected to each other, the open side is formed on a side of the first sub-housing away from the second sub-housing, and the second conductive member passes through the second sub-housing to be connected to the first conductive member; Wherein, the cross-sectional area of the second sub-housing is larger than the cross-sectional area of the first sub-housing.

14. A photovoltaic module, characterized in that, Including the photovoltaic junction box according to any one of claims 1-13.

15. A photovoltaic power generation system, characterized in that, Comprising a photovoltaic junction box according to any one of claims 1-13, or a photovoltaic module according to claim 14.

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