Photovoltaic junction box and photovoltaic module thereof

Abstract

The utility model discloses a photovoltaic junction box and a photovoltaic assembly thereof. The photovoltaic junction box comprises a box body, a diode, a first conductive member, a first cover body and a cable assembly. One end of the first conductive piece penetrates through the partition plate and extends into the first containing cavity. The first cover body is arranged at the opening of the first accommodating cavity; one end of the cable assembly penetrates through the first cover body to be electrically connected with one end of the first conductive piece, and the cable assembly and the first cover body are an integrated injection molding piece. According to the photovoltaic junction box provided by the utility model, the cable assembly and the first cover body are integrated injection molding parts, and one end of the cable assembly penetrates through the first cover body and is electrically connected with one end, extending into the first accommodating cavity, of the first conductive part. Therefore, automatic installation of the cable assembly in the first containing cavity is facilitated, the production efficiency of the photovoltaic junction box is improved, when the cable assembly or the first conductive part is damaged, only the first cover body or the box body integrated with the cable assembly needs to be replaced, the maintenance cost of the photovoltaic junction box is reduced, and the service life of the photovoltaic junction box is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic junction boxes, in particular to a photovoltaic junction box and a photovoltaic component thereof. Background Art

[0002] In the related art, the cables of the photovoltaic junction box are welded to the copper plate. When an abnormality occurs in the cables or the copper plate, the photovoltaic junction box needs to be replaced as a whole, which increases the maintenance cost of the photovoltaic junction box and is inconvenient to transport. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a photovoltaic junction box, when the cable assembly or the first conductive member is damaged, only the first cover or box body integrated with the cable assembly needs to be replaced, thereby reducing the maintenance cost of the photovoltaic junction box and increasing the service life of the photovoltaic junction box.

[0004] Another object of the present invention is to provide a photovoltaic assembly using the photovoltaic junction box.

[0005] The photovoltaic junction box according to the first embodiment of the utility model includes: a box body, the box body having a accommodating cavity, a partition is provided in the accommodating cavity to divide the accommodating cavity into a first accommodating cavity and a second accommodating cavity; a diode, the diode is arranged in the second accommodating cavity; a first conductive member, the diode is arranged on the first conductive member, one end of the first conductive member passes through the partition and extends into the first accommodating cavity; a first cover body, the first cover body is arranged on the open side of the first accommodating cavity; a cable assembly, one end of the cable assembly passes through the first cover body and is electrically connected to the one end of the first conductive member, and the cable assembly and the first cover body are an integral injection molded part.

[0006] According to the photovoltaic junction box of the embodiment of the utility model, by making the cable assembly and the first cover body an integral injection molded part, one end of the cable assembly passes through the first cover body and is electrically connected to the end of the first conductive member extending into the first accommodating cavity. Therefore, the automatic installation of the cable assembly in the first accommodating cavity is facilitated, and the production efficiency of the photovoltaic junction box is improved. At the same time, when the cable assembly or the first conductive member is damaged, only the first cover body or the box body integrated with the cable assembly needs to be replaced, which reduces the maintenance cost of the photovoltaic junction box and increases the service life of the photovoltaic junction box.

[0007] According to some embodiments of the present invention, a groove is formed on the bottom wall of the first accommodating cavity, the one end of the first conductive member has a bending portion, and the bending portion and the one end of the cable assembly both extend into the groove and abut against each other.

[0008] According to some embodiments of the utility model, the cable assembly includes a cable body, one end of which extends into the first cover body; a second conductive member, one end of which is electrically connected to the one end of the cable body, and the other end of the second conductive member extends out of the first cover body, and the second conductive member is an L-shaped conductive member.

[0009] According to some embodiments of the utility model, the groove includes a first groove and a second groove, the bent portion extends into the first groove; the other end of the second conductive member extends into the second groove; the photovoltaic junction box also includes an elastic conductive member, one end of the elastic conductive member extends into the first groove and stops against the bent portion, and the other end of the elastic conductive member extends into the second groove and stops against the other end of the second conductive member.

[0010] According to some embodiments of the present invention, the elastic conductive member is a beryllium copper conductive member.

[0011] According to some embodiments of the present invention, a portion of the first cover protrudes in a direction away from the first accommodating cavity to form a protrusion, and the one end of the cable body and the one end of the second conductive member extend into the protrusion.

[0012] According to some embodiments of the present invention, the photovoltaic junction box further includes a sealing member, and the sealing member is disposed between the outer peripheral surface of the first cover body and the inner wall surface of the first accommodating cavity.

[0013] According to some embodiments of the present invention, a mounting groove is formed on the outer peripheral surface of the first cover body, and the sealing member is located in the mounting groove.

[0014] According to some embodiments of the present utility model, the photovoltaic junction box further includes a second cover body, which is arranged on the open side of the second accommodating cavity; and a potting glue, which is filled in the second accommodating cavity.

[0015] The photovoltaic assembly according to the second embodiment of the utility model includes the photovoltaic junction box according to the first embodiment of the utility model.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of a photovoltaic junction box according to an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of a photovoltaic junction box according to an embodiment of the utility model, wherein the first cover body and the second cover body are not shown;

[0020] Figure 3 is a schematic diagram of a photovoltaic junction box according to an embodiment of the utility model from another angle;

[0021] Figure 4 is along Figure 3 Sectional view along line AA;

[0022] Figure 5 is a cross-sectional view of a photovoltaic junction box according to an embodiment of the utility model, wherein the first cover is not shown;

[0023] Figure 6 It is a cross-sectional view of the first cover of the photovoltaic junction box according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 100: Photovoltaic junction box;

[0026] 1: box body; 11: accommodating chamber; 111: first accommodating chamber; 112: second accommodating chamber; 12: partition; 13: groove; 131: first groove; 132: second groove; 2: diode; 3: first conductive member; 31: bending portion; 4: first cover body; 41: raised portion; 42: mounting groove; 5: cable assembly; 51: cable body; 52: second conductive member; 6: elastic conductive member; 7: sealing member; 8: second cover body. DETAILED DESCRIPTION

[0027] Reference below Figure 1-Figure 6 A photovoltaic junction box 100 according to an embodiment of the first aspect of the utility model is described.

[0028] like Figure 1-Figure 6 As shown, the photovoltaic junction box 100 according to the first embodiment of the utility model includes a box body 1, a diode 2, a first conductive member 3, a first cover body 4 and a cable assembly 5.

[0029] Specifically, the box body 1 has a accommodating cavity 11, and a partition 12 is provided in the accommodating cavity 11 to divide the accommodating cavity 11 into a first accommodating cavity 111 and a second accommodating cavity 112. The diode 2 is arranged in the second accommodating cavity 112. The diode 2 is arranged on the first conductive member 3, and one end of the first conductive member 3 passes through the partition 12 and extends into the first accommodating cavity 111. The first cover body 4 is arranged on the open side of the first accommodating cavity 111. One end of the cable assembly 5 passes through the first cover body 4 and is electrically connected to one end of the first conductive member 3, and the cable assembly 5 and the first cover body 4 are an integral injection molded part.

[0030] For example, in Figure 1 and Figure 2 In the example, the partition 12 is disposed in the accommodating chamber 11 to separate the accommodating chamber 11 into a first direction (for example, Figure 1 The first accommodating chamber 111 and the second accommodating chamber 112 are arranged in the left-right direction of the box body 1, and the partition 12 is arranged in the second direction of the box body 1 (for example, Figure 1 The diode 2 is the main heat generating component in the photovoltaic junction box 100, so the diode 2 is installed in the second accommodating cavity 112, and the cable assembly 5 is installed in the first accommodating cavity 111 to avoid thermal interference between the cable assembly 5 and the diode 2, so as to ensure the heat dissipation performance and use reliability of the diode 2 and the cable assembly 5.

[0031] The first conductive member 3 penetrates the first accommodating cavity 111 and the second accommodating cavity 112 to electrically connect the diode 2 and the cable assembly 5. The first cover 4 is formed by injection molding on the cable assembly 5, and a portion of the cable assembly 5 is wrapped by the first cover 4. The cable assembly 5 is integrated with the first cover 4, which facilitates the automatic installation of the cable assembly 5 in the first accommodating cavity 111, thereby improving the production efficiency of the photovoltaic junction box 100.

[0032] The first cover 4 is detachably mounted on the open side of the first accommodating cavity 111. For example, when the first cover 4 is detached from the open side of the first accommodating cavity 111, the electrical connection between the cable assembly 5 and the first conductive member 3 is disconnected, and the components in the first accommodating cavity 111 can be inspected and repaired from the open side of the first accommodating cavity 111. When the cable assembly 5 or the first conductive member 3 is damaged, only the first cover 4 or the box body 1 integrated with the cable assembly 5 needs to be replaced, which reduces the maintenance cost of the photovoltaic junction box 100, thereby increasing the service life of the photovoltaic junction box 100 and improving the market competitiveness of the photovoltaic junction box 100; when the first cover 4 is mounted on the open side of the first accommodating cavity 111, the cable assembly 5 and the first conductive member 3 are electrically connected to complete the installation of the photovoltaic junction box 100.

[0033] According to the photovoltaic junction box 100 of the embodiment of the utility model, by making the cable assembly 5 and the first cover body 4 an integral injection molded part, one end of the cable assembly 5 passes through the first cover body 4 and is electrically connected to one end of the first conductive member 3 extending into the first accommodating cavity 111. Therefore, the automatic installation of the cable assembly 5 in the first accommodating cavity 111 is facilitated, and the production efficiency of the photovoltaic junction box 100 is improved. At the same time, when the cable assembly 5 or the first conductive member 3 is damaged, only the first cover body 4 or the box body 1 integrated with the cable assembly 5 needs to be replaced, which reduces the maintenance cost of the photovoltaic junction box 100 and increases the service life of the photovoltaic junction box 100.

[0034] According to some embodiments of the present invention, referring to Figure 1 , Figure 2, Figure 4 and Figure 5 The bottom wall of the first accommodating cavity 111 is formed with a groove 13, and one end of the first conductive member 3 has a bent portion 31. The bent portion 31 and one end of the cable assembly 5 both extend into the groove 13 and abut against each other. The portion of the first conductive member 3 extending into the first accommodating cavity 111 extends toward the bottom wall of the first accommodating cavity 111 to form the bent portion 31. The free end of the bent portion 31 extends into the groove 13, and one end of the cable assembly 5 away from the first cover 4 also extends into the groove 13. The cable assembly 5 abuts against the bent portion 31, thereby achieving electrical connection between the cable assembly 5 and the first conductive member 3.

[0035] Furthermore, the cable assembly 5 includes a cable body 51 and a second conductive member 52. One end of the cable body 51 extends into the first cover 4. One end of the second conductive member 52 is electrically connected to the above-mentioned one end of the cable body 51, and the other end of the second conductive member 52 extends out of the first cover 4. The second conductive member 52 is an L-shaped conductive member. Figure 1-Figure 6 In the example, the cable body 51 extends into the first cover body 4 along the first direction, one end of the second conductive member 52 extends into the first cover body 4, and the above-mentioned one end of the second conductive member 52 and the one end of the cable body 51 extending into the first cover body 4 are resistance welded to realize the electrical connection between the cable body 51 and the second conductive member 52. The other end of the second conductive member 52 extends in a direction away from the first cover body 4, so that when the first cover body 4 covers the open side of the first accommodating cavity 111, the above-mentioned other end of the second conductive member 52 can extend into the groove 13 of the first accommodating cavity 111 to complete the electrical connection between the cable body 51, the second conductive member 52 and the first conductive member 3. In this way, the first cover body 4 is used to fix the cable body 51 and the second conductive member 52, so as to prevent the cable body 51 and / or the second conductive member 52 from moving relative to the first cover body 4, improve the matching accuracy between the second conductive member 52 and the groove 13, improve the assembly efficiency of the photovoltaic junction box 100, and at the same time improve the stability of the electrical connection between the cable body 51, the second conductive member 52 and the first conductive member 3.

[0036] Furthermore, refer to Figure 4 and Figure 5 The groove 13 includes a first groove 131 and a second groove 132, the bent portion 31 extends into the first groove 131, and the other end of the second conductive member 52 extends into the second groove 132. The photovoltaic junction box 100 also includes an elastic conductive member 6, one end of the elastic conductive member 6 extends into the first groove 131 and abuts against the bent portion 31, and the other end of the elastic conductive member 6 extends into the second groove 132 and abuts against the other end of the second conductive member 52.

[0037] In the first direction, the first groove 131 is adjacent to the partition 12, and the second groove 132 is away from the partition 12. During installation, one end of the elastic conductive component 6 is first extended into the first groove 131, and the elastic conductive component 6 is pressed downward. The above-mentioned one end of the elastic conductive component 6 is deformed toward the second groove 132 until it is fully extended into the first groove 131. The elastic conductive component 6 restores its deformation under the action of the restoring force, so that the above-mentioned one end of the elastic conductive component 6 stops at the bending portion 31, thereby realizing the electrical connection between the elastic conductive component 6 and the first conductive component 3, and ensuring the electrical connection stability between the elastic conductive component 6 and the first conductive component 3.

[0038] Specifically, during the installation process, the other end of the elastic conductive member 6 is first extended into the second groove 132, and then when the end of the second conductive member 52 away from the first cover body 4 is extended into the second groove 132, the end of the elastic conductive member 6 extended into the second groove 132 is squeezed by the second conductive member 52 and deformed in the direction of the first groove 131. After the above-mentioned end of the second conductive member 52 is completely extended into the second groove 132, the elastic conductive member 6 recovers the deformation under the action of the restoring force, so that the second conductive member 52 can be reliably stopped on the elastic conductive member 6, thereby improving the connection stability between the elastic conductive member 6 and the second conductive member 52.

[0039] In addition, by making the second groove 132 away from the first accommodating cavity 111 in the first direction, the second conductive member 52 can be kept away from the edge of the first cover body 4, thereby preventing the second conductive member 52 from interfering with the partition 12 and deforming during installation.

[0040] In addition, the elastic conductive member 6 is a beryllium copper conductive member. Beryllium copper is a copper alloy with beryllium as the main alloying element. Beryllium copper conductive members have the advantages of good elasticity, high strength, corrosion resistance, wear resistance, cold resistance, high conductivity and non-magneticity. Using beryllium copper conductive members as the elastic conductive member 6 is conducive to improving the service life of the elastic conductive member 6.

[0041] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 6 , part of the first cover body 4 protrudes in a direction away from the first accommodating cavity 111 to form a protrusion 41, and the above-mentioned one end of the cable body 51 and the above-mentioned one end of the second conductive member 52 extend into the protrusion 41. The protrusion 401 is located on the side of the first cover body 4 away from the first accommodating cavity 111, which increases the thickness of the first cover body 4 at the position where the cable body 51 is set, thereby improving the installation stability of the cable body 51 and the second conductive member 52 in the first cover body 4. In addition, the protrusion 401 increases the force application area of ​​the user, that is, the user is suitable for applying force to the protrusion 401 to make the first cover body 4 cover the open side of the first accommodating cavity 111, thereby improving the user's use experience.

[0042] According to some embodiments of the utility model, the photovoltaic junction box 100 further includes a seal 7, which is disposed between the outer peripheral surface of the first cover body 4 and the inner wall surface of the first accommodating cavity 111. In this way, the seal 7 fills the gap between the outer peripheral surface of the first cover body 4 and the inner wall surface of the first accommodating cavity 111, improves the sealing between the first cover body 4 and the first accommodating cavity 111, and also increases the installation stability of the first cover body 4 on the open side of the first accommodating cavity 111.

[0043] Further, refer to Figure 6 The outer circumferential surface of the first cover body 4 is formed with a mounting groove 42, and the sealing member 7 is located in the mounting groove 42. The first cover body 4 is formed with an annular mounting groove 42 in the circumferential direction, and most of the sealing member 7 is located in the mounting groove 42. When the first cover body 4 is covered on the open side of the first accommodating cavity 111, the portion of the sealing member 7 extending out of the mounting groove 42 stops against the inner wall surface of the first accommodating cavity 111, so that the sealing member 7 is stably installed between the outer circumferential surface of the first cover body 4 and the inner wall surface of the first accommodating cavity 111.

[0044] According to some embodiments of the present invention, Figure 1 , Figure 3-Figure 5 As shown, the photovoltaic junction box 100 further includes a second cover 8 and potting glue. The second cover 8 is arranged on the open side of the second accommodating cavity 112, and the potting glue is filled in the second accommodating cavity 112. When the second cover 8 is not arranged on the open side of the second accommodating cavity 112, it is convenient to inspect and repair the diode 2 and other components in the second accommodating cavity 112; when the second cover 8 is arranged on the open side of the second accommodating cavity 112, the second cover 8 and the box body 1 protect the diode 2 and other components in the second accommodating cavity 112, thereby improving the operating stability of the diode 2 and other components.

[0045] Among them, the potting glue has the advantages of being waterproof, moisture-proof, dust-proof, insulating, thermally conductive, confidential, corrosion-resistant, temperature-resistant and shock-resistant. Therefore, the potting glue is filled in the second accommodating cavity 112 to seal the various components in the second accommodating cavity 112, thereby improving the sealing of the photovoltaic junction box 100.

[0046] A photovoltaic assembly (not shown) according to an embodiment of the second aspect of the utility model comprises a photovoltaic junction box 100 according to an embodiment of the first aspect of the utility model.

[0047] The photovoltaic assembly according to the embodiment of the utility model improves the processing efficiency of the photovoltaic assembly by adopting the photovoltaic junction box 100, improves the service life of the photovoltaic assembly, saves the cost of production and maintenance, and thus improves the market competitiveness of the photovoltaic assembly.

[0048] Other structures and operations of the photovoltaic junction box 100 and the photovoltaic assembly according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0049] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "bottom", "inside", "outside", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0052] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic junction box, characterized in that: include: A box body, wherein the box body has a receiving cavity, and a partition is provided in the receiving cavity to separate the receiving cavity into a first receiving cavity and a second receiving cavity; a diode, wherein the diode is disposed in the second accommodation cavity; A first conductive member, the diode is arranged on the first conductive member, and one end of the first conductive member passes through the partition and extends into the first accommodating cavity; A first cover body, the first cover body is arranged on the open side of the first accommodating cavity; A cable assembly, one end of the cable assembly passes through the first cover body and is electrically connected to the one end of the first conductive member, and the cable assembly and the first cover body are an integral injection molded part.

2. The photovoltaic junction box according to claim 1, characterized in that: A groove is formed on the bottom wall of the first accommodating cavity, and the one end of the first conductive member has a bending portion. The bending portion and the one end of the cable assembly both extend into the groove and abut against each other.

3. The photovoltaic junction box according to claim 2, characterized in that: The cable assembly comprises: A cable body, one end of which extends into the first cover; A second conductive member, one end of the second conductive member is electrically connected to the one end of the cable body, the other end of the second conductive member extends out of the first cover, and the second conductive member is an L-shaped conductive member.

4. The photovoltaic junction box according to claim 3, characterized in that: The groove includes a first groove and a second groove, the bent portion extends into the first groove; the other end of the second conductive member extends into the second groove; The photovoltaic junction box also includes: An elastic conductive member, one end of the elastic conductive member extends into the first groove and stops against the bending portion, and the other end of the elastic conductive member extends into the second groove and stops against the other end of the second conductive member.

5. The photovoltaic junction box according to claim 4, characterized in that: The elastic conductive member is a beryllium copper conductive member.

6. The photovoltaic junction box according to claim 4, characterized in that: A portion of the first cover body protrudes in a direction away from the first accommodating cavity to form a protruding portion, and the one end of the cable body and the one end of the second conductive member extend into the protruding portion.

7. The photovoltaic junction box according to any one of claims 1 to 6, characterized in that: Also includes: A sealing member is provided between the outer peripheral surface of the first cover body and the inner wall surface of the first accommodating cavity.

8. The photovoltaic junction box according to claim 7, characterized in that: An installation groove is formed on the outer peripheral surface of the first cover body, and the sealing member is located in the installation groove.

9. The photovoltaic junction box according to any one of claims 1 to 6, characterized in that: Also includes: a second cover body, the second cover body being arranged on an open side of the second accommodating cavity; Potting glue is filled in the second containing cavity.

10. A photovoltaic module, characterized in that: Comprising the photovoltaic junction box according to any one of claims 1-9.

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