Photovoltaic junction assembly and photovoltaic junction box

Abstract

This utility model relates to the technical field of photovoltaic junction boxes, and in particular to a photovoltaic wiring assembly, including a diode and two wires. The diode has two terminals located at its two ends. Each wire includes an insulating layer and a core. The insulating layer wraps around the outside of the core. Each core has a connecting end formed at one end. A connecting groove is formed on the end face of the connecting end along the length of the core. The two terminals of the diode are connected to connecting ends similar to copper structural connectors to electrically connect the diode to the two wires. This utility model's photovoltaic wiring assembly effectively reduces the cost of photovoltaic wiring assemblies and junction boxes by directly processing the wires instead of existing connectors. Furthermore, by incorporating heat dissipation components to promptly absorb and dissipate heat generated by the diode and wires, this utility model can delay diode performance degradation and wire aging, reducing the risk of fire and offering good reliability and safety.

Description

Technical Field

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

[0002] A photovoltaic (PV) junction box is a connecting device between a PV array (composed of PV modules) and a PV charging control device. Its main function is to connect and protect the PV modules, connecting the electricity generated by the PV cells to external power lines and conducting the current generated by the PV modules. Under strong sunlight, some PV cells that are not receiving sunlight and thus become loads can overheat and be damaged. Therefore, a diode in this PV junction box is connected in parallel with the PV array. When hot spot effects occur, current can be output from the diode to protect the corresponding PV cells.

[0003] In existing technologies, photovoltaic junction boxes connect photovoltaic cells to external wiring by connecting two wires to connectors at both ends of a diode. Since photovoltaic arrays require a large number of junction boxes, a large number of connectors are needed, and these connectors are typically made of copper or other conductive metals, resulting in high costs for photovoltaic junction boxes. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a photovoltaic wiring assembly.

[0005] The photovoltaic wiring assembly provided by this utility model adopts the following technical solution:

[0006] A photovoltaic wiring assembly includes a diode and two wires; wherein the diode has two terminals located at its two ends; the wires include an insulating layer and a core; the insulating layer wraps around the outside of the core; each of the two cores has a connecting end formed at one end; the connecting end has a connecting groove formed on its end face along the length of the core; the two terminals of the diode are respectively embedded in one of the connecting grooves to electrically connect the diode to the two wires.

[0007] Optionally, the connection end has a heat dissipation structure for dissipating at least the heat transferred to the terminals of the diode.

[0008] Optionally, the connecting end is in the form of a sheet.

[0009] Optionally, the connecting end is rectangular and smoothly transitions to the wire core.

[0010] Optionally, it also includes two heat dissipation components; the two heat dissipation components are respectively fixedly connected to the two connection ends.

[0011] Optionally, the heat dissipation component includes a base, a first heat dissipation fin, and a second heat dissipation fin; the base is attached to and fixedly connected to the connecting end; the first heat dissipation fin and the second heat dissipation fin are both integrally formed with the base, and the two are arranged at intervals on the base along the length direction of the wire core.

[0012] Optionally, the angle between the first heat dissipation fin and the second heat dissipation fin and the base and near the diode is between 0° and 180°, excluding 0° and 180°.

[0013] Optionally, the width of the base in the width direction of the connecting end is greater than the width of the connecting end.

[0014] Optionally, the base has multiple grooves formed on the side connected to the connecting end; the grooves extend in a direction parallel to their surface, and the multiple grooves are parallel to each other; the grooves are evenly spaced on the base.

[0015] Based on the above concept, this utility model also provides a photovoltaic junction box, including a box body and the aforementioned photovoltaic wiring assembly; the photovoltaic wiring assembly is housed within the box body.

[0016] As described above, the photovoltaic wiring assembly of this utility model has at least the following beneficial effects:

[0017] This utility model's photovoltaic wiring assembly effectively reduces the cost of photovoltaic wiring assemblies and junction boxes by directly processing the wires instead of existing connectors. Furthermore, by incorporating heat dissipation components, this utility model promptly dissipates the heat generated by the diodes and wires, slowing down diode performance degradation and wire aging, reducing the risk of fire, and demonstrating good reliability and safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic wiring assembly.

[0019] Figure 2 This is a schematic diagram of the connecting groove structure.

[0020] Figure 3 This is a schematic diagram of the base and groove structure.

[0021] Figure 4 yes Figure 2 A magnified view of part A in the middle.

[0022] Reference numerals: 1. Diode; 2. Wire; 21. Insulation layer; 22. Wire core; 3. Connecting end; 4. Connecting groove; 5. Terminal block; 6. Heat dissipation component; 61. Base; 611. Groove; 62. First heat dissipation fin; 63. Second heat dissipation fin. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0024] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0025] Please refer to Figures 1-4 This utility model discloses a photovoltaic wiring assembly, including a diode 1 and two wires 2. The diode 1 has two terminals 5, located at its two ends. Each wire 2 includes an insulating layer 21 and a core 22. The insulating layer 21 wraps around the outside of the core 22. Each core 22 has a connecting end 3 formed at one end. The connecting end 3 has a connecting groove 4 formed on its end face along the length of the core 22. The two terminals 5 of the diode 1 are respectively embedded in one of the connecting grooves 4, enabling electrical connection between the diode 1 and the two wires 2.

[0026] Specifically, the conductor 2 can be any type of conductor suitable for connecting photovoltaic cell array boxes and photovoltaic charging control devices. In this embodiment, the conductor 2 uses a common cylindrical core 22, with an insulation layer 21 wrapped around the outside of the core 22. The core 22 can be made of conductors such as copper, iron, or aluminum.

[0027] The connection terminal 3 has a heat dissipation structure to dissipate heat transferred from the terminal 5 of the diode 1. Specifically, the connection terminal 3 can be shaped in various ways to increase its surface area and enhance its heat dissipation capacity. For example, the connection terminal 3 can be shaped as a sheet, a hollow cylinder, etc., thus assisting the diode 1 in heat dissipation. Simultaneously, this shape of the connection terminal 3 can also accelerate the dissipation of heat generated by the wire 2 itself.

[0028] In a preferred embodiment of this invention, the connecting end 3 is rectangular in shape and smoothly transitions to the wire core 22. The length direction of the connecting end 3 is parallel to the axial direction of the wire core 22, its width is equal to the diameter of the wire core 22, and one side of the connecting end 3 in the length direction is directly opposite one diameter of the wire core 22. The two sides of the connecting end 3 in the thickness direction smoothly transition to the wire core 22 through curved surfaces. This shape of the connecting end 3 can be quickly manufactured by extrusion molding, which is beneficial for the large-scale production and application of photovoltaic wiring modules.

[0029] After the connecting end 3 is formed, a connecting groove 4 is made on the connecting end 3 to electrically connect the connecting end 3 to the diode 1. The shape of the connecting groove 4 is adapted to the shape of the terminal 5 of the diode 1. The terminal 5 is inserted into the connecting groove 4 to fix the diode 1 and connect the connecting end 3 and achieve conduction.

[0030] In other embodiments of this utility model, the connecting end 3 may also be other suitable and easy-to-manufacture shapes, such as cylindrical, polygonal, etc.

[0031] By processing the end of the wire core 22 into a connection end 3, which is directly connected to the terminal 5 of the diode 1, the connectors in the prior art are omitted, reducing the cost of the photovoltaic wiring assembly.

[0032] Due to the characteristics of diode 1, it generates a significant amount of heat during operation, and the core 22 of conductor 2 also heats up. If this heat is not dissipated in time, it can accelerate the performance degradation of diode 1 and the aging of conductor 2, and may even pose a fire risk. To dissipate heat from the photovoltaic wiring assembly in a timely manner, please refer to... Figure 1 , Figure 2 The photovoltaic wiring assembly of this utility model also includes two heat dissipation components 6. The two heat dissipation components 6 are respectively fixedly connected to the two connection ends 3.

[0033] In a preferred embodiment of this utility model, the heat dissipation component 6 includes a base 61, a first heat dissipation fin 62, and a second heat dissipation fin 63. The base 61 is attached to and fixedly connected to the connecting end 3. The first heat dissipation fin 62 and the second heat dissipation fin 63 are both integrally formed with the base 61, and are arranged at intervals along the length direction of the wire core 22 on the base 61, and are inclined in the direction away from the connecting end 3.

[0034] Specifically, the base 61 is composed of a longer rectangular plate and a shorter rectangular plate, integrally formed to give the base 61 an L-shape. The first heat dissipation fin 62 and the second heat dissipation fin 63 are both rectangular. The first heat dissipation fin 62 is fixedly connected to the longer portion of the base 61, with its length and direction matching the length of the longer portion. The second heat dissipation fin 63 is fixedly connected to the shorter portion of the base 61, with its length and direction matching the length of the shorter portion. The angle between the first and second heat dissipation fins 62 and the base 61 is between 0° and 180° (excluding 0° and 180°), for example, 30°, 45°, 60°, 90°, 120°, 150°, and 157°. The heat dissipation component 6 can be made of copper, aluminum, or other materials with good heat dissipation properties. It can quickly absorb heat from the diode and further increase the heat dissipation area of ​​the heat dissipation component 6 through the first and second heat dissipation fins 62 and 63, effectively dissipating the heat generated at the diode 1 and the wire core 22.

[0035] In other embodiments of this utility model, the heat dissipation effect of the heat dissipation component 6 can be further improved in other ways. For example, the base 61 can be configured such that its width in the width direction of the connecting end 3 is greater than that of the connecting end 3, so that a part of the base 61 does not contact the connecting end 3 for heat exchange, but the heat dissipation area of ​​the heat dissipation component 6 is still increased. As another example, a plurality of grooves 611 are formed on the side of the base 61 connected to the connecting end 3. The grooves 611 extend in a direction parallel to their surface, and the plurality of grooves 611 are parallel to each other. The grooves 611 are evenly spaced on the base 61. Figure 3 In the illustrated configuration, the groove 611 extends along the length of the connecting end 3, and multiple grooves 611 are closely distributed on the side where the base 61 connects to the connecting end 3, making the surface of the side where the base 61 connects to the connecting end 3 wavy. A thermally conductive material can be further coated between the base 61 and the connecting end 3, thereby effectively improving the heat dissipation effect of the heat dissipation component 6.

[0036] Similarly, please refer to Figure 4 Multiple grooves 611 can also be provided on the side of the connecting end 3 that is connected to the base. Their structure and principle are exactly the same as the grooves 611 on the base, and will not be described in detail here.

[0037] In addition, please refer to Figure 2 , Figure 3 The connecting groove 4 can also be formed by connecting the semi-circular groove on the connecting end 3 and the semi-circular groove on the connecting side of the base 61. When the connecting end 3 is fixed to the base 61, the terminal 5 can be clamped in it, making the connection between the diode 1 and the wire 2 easier.

[0038] This utility model's photovoltaic wiring assembly effectively reduces the cost of photovoltaic wiring assemblies and junction boxes by directly processing the conductor 2 instead of existing connectors. Furthermore, by incorporating a heat dissipation component 6, this utility model promptly dissipates the heat generated by the diode 1 and conductor 2, thus slowing down the performance degradation of the diode 1 and the aging of the conductor 2, reducing the risk of fire, and demonstrating good reliability and safety.

[0039] Meanwhile, this utility model also discloses a photovoltaic junction box, including a box body and the aforementioned photovoltaic wiring assembly. The photovoltaic wiring assembly is housed within the box body. By using the aforementioned photovoltaic wiring assembly, the photovoltaic junction box of this utility model also has the advantages of low cost, high reliability, and high safety.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A photovoltaic wiring module, characterized in that: It includes a diode (1) and two wires (2); wherein, The diode (1) has two terminals (5), which are located at the two ends of the diode (1); The conductor (2) includes an insulation layer (21) and a core (22); the insulation layer (21) wraps around the outside of the core (22); each of the two cores (22) has a connecting end (3) formed at one end; the connecting end (3) has a connecting groove (4) on the end face of the core (22) in the length direction; The two terminals (5) of the diode (1) are respectively embedded in a connection slot (4) to make the diode (1) electrically connected to the two wires (2).

2. The photovoltaic wiring module according to claim 1, characterized in that: The connection end (3) has a heat dissipation structure for dissipating heat transferred at least from the terminal (5) of the diode (1).

3. The photovoltaic wiring assembly according to claim 2, characterized in that: The connecting end (3) is plate-shaped.

4. The photovoltaic wiring assembly according to claim 3, characterized in that: The connecting end (3) is rectangular and smoothly transitions to the wire core (22).

5. The photovoltaic wiring assembly according to claim 4, characterized in that: It also includes two heat dissipation components (6); the two heat dissipation components (6) are respectively fixedly connected to the two connection ends (3).

6. The photovoltaic wiring assembly according to claim 5, characterized in that: The heat dissipation component (6) includes a base (61), a first heat dissipation fin (62), and a second heat dissipation fin (63); The base (61) is attached to and fixedly connected to the connecting end (3); the first heat dissipation fin (62) and the second heat dissipation fin (63) are both integrally formed with the base (61), and the two are arranged at intervals on the base (61) along the length direction of the wire core (22).

7. The photovoltaic wiring assembly according to claim 6, characterized in that: The angle between the first heat dissipation fin (62) and the second heat dissipation fin (63) and the base and near the diode (1) is between 0° and 180°, excluding 0° and 180°.

8. The photovoltaic wiring assembly according to claim 6, characterized in that: The base (61) is wider than the connecting end (3) in the width direction.

9. The photovoltaic wiring assembly according to claim 6, characterized in that: The base (61) has a plurality of grooves (611) formed on the side connected to the connecting end (3); the grooves (611) extend in a direction parallel to their surface, and the plurality of grooves (611) are parallel to each other; the grooves (611) are evenly spaced on the base (61).

10. A photovoltaic junction box, characterized in that, Includes the housing and the photovoltaic wiring assembly as described in any one of claims 1-9; The photovoltaic wiring assembly is housed within the box.

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