Photovoltaic junction box and photovoltaic junction box assembly

Abstract

The utility model relates to a photovoltaic junction box and a photovoltaic junction box assembly. The photovoltaic junction box comprises a box body, the box body comprises a main body part and a connecting part which are integrally formed, the main body part is provided with a containing cavity, the connecting part is provided with a mounting groove, and the mounting groove is configured to be capable of being matched with a plug of an external cable in a plugging mode; the bypass protection circuit is arranged in the accommodating cavity; the conductive part is arranged in the mounting groove and electrically connected with the bypass protection circuit, and the conductive part is configured to be electrically connected with conductive metal of the plug when the plug is inserted into the mounting groove; and a notch of the mounting groove is positioned on the top side of the box body. The photovoltaic assembly installation structure and the photovoltaic support are high in connection strength. According to the photovoltaic junction box and the photovoltaic junction box assembly, automatic production is more convenient, and the production efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and particularly to a photovoltaic junction box and a photovoltaic junction box assembly. Background Art

[0002] A photovoltaic junction box is one of the key accessories of a photovoltaic module, which is responsible for transmitting the current generated by the battery in the photovoltaic module. The photovoltaic junction box usually includes a box body, and one or more bypass diodes are arranged in the box body to play a role of bypass protection and avoid the occurrence of hot spot effect in the photovoltaic module. One side of the box body is also connected with a photovoltaic cable, and the photovoltaic cable is electrically connected with the bypass diode to realize the electrical connection between the bypass diode and the outside. However, in the production process of the photovoltaic junction box, the above-mentioned photovoltaic cable usually needs to be manually coiled with a buckle or a cable tie, which results in low production efficiency of the photovoltaic junction box and also reduces the degree of automation in the production process. Summary of the Utility Model

[0003] Based on this, the embodiments of the present application provide a photovoltaic junction box and a photovoltaic junction box assembly with more convenient automated production and higher production efficiency.

[0004] The first aspect of the embodiments of the present application provides a photovoltaic junction box, including:

[0005] A box body, which includes an integrally formed main body part and a connecting part. The main body part is configured with a receiving cavity, and the connecting part is configured with an installation groove, and the installation groove is configured to be able to be plugged and matched with the plug of an external cable;

[0006] A bypass protection circuit, which is arranged in the receiving cavity; and

[0007] A conductive member, which is arranged in the installation groove and is electrically connected with the bypass protection circuit, and the conductive member is configured to be able to be electrically connected with the conductive metal of the plug when the plug is inserted into the installation groove;

[0008] Wherein, the notch of the installation groove is located on the top side of the box body.

[0009] In one embodiment, a plugging groove is formed on the top surface of the conductive member for the conductive metal of the plug to be inserted; or

[0010] The conductive member is configured as a male plugging structure to be plugged and matched with the conductive metal of the plug configured as a female plugging structure.

[0011] In one embodiment, the plug further includes a first auxiliary positioning part that is spaced around the outside of the conductive metal;

[0012] When a plugging groove is formed on the top surface of the conductive member, an annular plugging space is jointly defined between the conductive member and the groove wall of the installation groove for the first auxiliary positioning part to be inserted.

[0013] In one embodiment, a mating groove is formed in the end face of the conductive metal of the plug.

[0014] When the conductive member is configured as a male plug structure, the conductive member is configured as a columnar member capable of being inserted and mated with the mating groove, and the groove wall of the installation groove is configured to support on the outer peripheral side of the conductive metal when the plug is inserted into the installation groove.

[0015] In one embodiment, the plug further includes at least two second auxiliary positioning portions spaced apart on the outer side of the conductive metal.

[0016] When the conductive member is configured as a male plug structure, at least two clamping grooves are provided at the edge of the slot opening of the installation groove, and the at least two clamping grooves are configured to be capable of being clamped with the at least two second auxiliary positioning portions in a one-to-one correspondence.

[0017] In one embodiment, the photovoltaic junction box further includes a transition member, a part of the structure of the transition member is located in the installation groove and is electrically connected to the conductive member; another part of the structure of the transition member is located in the accommodation cavity and is electrically connected to the bypass protection circuit.

[0018] In one embodiment, two conductive tentacles extending towards the transition member are provided on the outer peripheral side of the conductive member, and the conductive tentacles are electrically connected to the transition member.

[0019] In one embodiment, the transition member is configured as a conductive sheet, and the transition member overlaps on the copper sheet of the bypass protection circuit.

[0020] In one embodiment, the depth direction of the installation groove is along the height direction of the box body.

[0021] The second aspect of the embodiments of the present application provides a photovoltaic junction box assembly, including at least one of the above-mentioned photovoltaic junction boxes.

[0022] Advantages of the above-mentioned photovoltaic junction box and photovoltaic junction box assembly:

[0023] Since the box body includes a main body portion and a connecting portion, the main body portion is configured with an accommodation cavity, the connecting portion is configured with an installation groove, the installation groove is configured to be capable of being inserted and mated with the plug of an external cable, the bypass protection circuit is arranged in the accommodation cavity, the conductive member is arranged in the installation groove and is electrically connected to the bypass protection circuit, and the conductive member is configured to be electrically connected to the conductive metal of the plug when the plug is inserted into the installation groove, therefore, when the plug of the external cable is inserted into the installation groove, the conductive metal of the plug can be electrically connected to the bypass protection circuit through the conductive member, so as to realize the electrical connection between the internal circuit of the photovoltaic junction box and the outside world.

[0024] Since the main body part and the connecting part are integrally formed, no cables are connected to the box body during the production process. Its electrical connection with the outside world can be achieved through the insertion and cooperation of an external cable and the installation groove after the production is completed. Since there is no need for the process of cable coiling during the production of the photovoltaic junction box, the automated production is more convenient, improving the production efficiency.

[0025] In addition, since the notch of the installation groove is located on the top side of the box body, the external cable can be inserted into or pulled out of the box body from the top side of the box body, without occupying the space on the side of the photovoltaic junction box. When the side distance between the photovoltaic junction box and the frame of the photovoltaic module is small and it is inconvenient to insert from the side, the unobstructed plugging and unplugging operation can still be achieved. Description of the Drawings

[0026] Figure 1 Schematic structural diagram of the photovoltaic junction box provided by the embodiment of the present application;

[0027] Figure 2 Partial structural schematic diagram of the external cable provided by the embodiment of the present application;

[0028] Figure 3 Schematic diagram of another structure of the connecting part in the photovoltaic junction box provided by the embodiment of the present application;

[0029] Figure 4 Schematic diagram of another structure of the plug in the external cable provided by the embodiment of the present application;

[0030] Figure 5 Schematic diagram of another structure of the photovoltaic junction box provided by the embodiment of the present application;

[0031] Figure 6 Schematic diagram of the structure of the external cable in the photovoltaic junction box assembly provided by the embodiment of the present application.

[0032] Explanation of the reference numerals in the drawings:

[0033] 100, Photovoltaic junction box; 10, Box body;

[0034] 20, Main body part; 21, Accommodation cavity; 30, Connecting part; 31, Installation groove; 32, Conductive part; 321, Insertion slot; 322, Conductive tentacle; 323, Clamping groove;

[0035] 40, External cable; 41, Plug; 411, First auxiliary positioning part; 412, Second auxiliary positioning part; 42, Conductive metal; 421, Matching groove; 43, Cable;

[0036] 50, Bypass protection circuit;

[0037] 60, Transition part. Detailed Embodiment

[0038] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the spirit of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0039] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation of the present utility model.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0044] The photovoltaic junction box and the photovoltaic junction box assembly according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0045] Figure 1 It is a schematic structural diagram of the photovoltaic junction box provided by the embodiment of the present application. Figure 2 It is a partial structural schematic diagram of the external cable provided by the embodiment of the present application. Figure 3 It is a schematic diagram of another structure of the connecting portion in the photovoltaic junction box provided by the embodiment of the present application. Figure 4 It is a schematic diagram of another structure of the plug in the external cable provided by the embodiment of the present application. Figure 5 It is a schematic diagram of another structure of the photovoltaic junction box provided by the embodiment of the present application. Figure 6 It is a schematic structural diagram of the external cable in the photovoltaic junction box assembly provided by the embodiment of the present application.

[0046] Referring to Figure 1 and Figure 2 The photovoltaic junction box 100 provided by the embodiment of the present application includes a box body 10, a bypass protection circuit 50 and a conductive member 32.

[0047] The box body 10 includes an integrally formed main body 20 and a connecting part 30, the main body 20 is configured with a receiving cavity 21, and the connecting part 30 is configured with a mounting groove 31, and the mounting groove 31 is configured to be plugged with a plug 41 of an external cable 40. The bypass protection circuit 50 is disposed in the receiving cavity 21. The conductive member 32 is disposed in the mounting groove 31 and is electrically connected to the bypass protection circuit 50, and the conductive member 32 is configured to be electrically connected to the conductive metal 42 of the plug 41 when the plug 41 is inserted into the mounting groove 31. The notch of the mounting groove 31 is located at the top side of the box body 10.

[0048] The box body 10 includes a main body 20 and a connecting part 30. The main body 20 is configured with a accommodating cavity 21. The connecting part 30 is configured with a mounting groove 31. The mounting groove 31 is configured to be plugged with a plug 41 of an external cable 40. The bypass protection circuit 50 is arranged in the accommodating cavity 21. The conductive member 32 is arranged in the mounting groove 31 and is electrically connected to the bypass protection circuit 50. The conductive member 32 is configured to be electrically connected to the conductive metal 42 of the plug 41 when the plug 41 is inserted into the mounting groove 31. Therefore, when the plug 41 of the external cable 40 is inserted into the mounting groove 31, the conductive metal 42 of the plug 41 can be electrically connected to the bypass protection circuit 50 through the conductive member 32, so as to realize the electrical connection between the circuit inside the photovoltaic junction box 100 and the outside world.

[0049] Since the main body 20 and the connecting part 30 are integrally formed, the box body 10 is not connected to any cables during the production process, and its electrical connection with the outside world can be achieved after the production is completed by plugging the external cable 40 into the installation groove 31. Since there is no need for cable winding process during the production process of the photovoltaic junction box 100, the automated production is more convenient and the production efficiency is improved.

[0050] In addition, since the notch of the mounting groove 31 is located at the top side of the box body 10, the external cable 40 can be inserted into or pulled out of the box body 10 from the top side of the box body 10, and will not occupy the space on the side of the photovoltaic junction box 100. In the case where the distance between the photovoltaic junction box 100 and the side of the photovoltaic module frame is small and it is inconvenient to insert from the side, the plugging and unplugging operation can still be achieved without obstacles.

[0051] In addition, the main body 20 and the connecting portion 30 may be integrally formed by injection molding or the like. The bypass protection circuit 50 may include, for example, a bypass diode or the like. It is understood that the top side of the box body 10 refers to the side away from the mounting component when the box body 10 is mounted on the mounting component. It may be the side away from the mounting side when the photovoltaic junction box 100 is in normal use.

[0052] It is understandable that the installation slot 31 is configured to be pluggable with the plug 41 of the external cable 40 , which means that at least a portion of the structure of the plug 41 can be inserted into the installation slot 31 .

[0053] In the embodiments of the present application, with continued reference to Figure 1 and Figure 2 , a plugging groove 321 is formed on the top surface of the conductive member 32, and the conductive metal 42 of the plug 41 is inserted into the plugging groove 321.

[0054] A plugging groove 321 is formed on the top surface of the conductive member 32. When the conductive metal 42 of the plug 41 is inserted, the conductive member 32 is configured as a female plugging structure and is plugged and mated with the plug 41 of the male plugging structure. With such a setting, during multiple plugging and unplugging operations, the conductive member 32 is not easily damaged and has a longer service life.

[0055] Alternatively, with reference to Figure 3 and Figure 4 , in another possible embodiment, the conductive member 32 is configured as a male plugging structure to be plugged and mated with the conductive metal 42 of the plug 41 configured as a female plugging structure. At this time, the plugging and unplugging operations can be achieved more easily and simply.

[0056] In the embodiments of the present application, with continued reference to Figure 1 and Figure 2 , the plug 41 further includes a first auxiliary positioning portion 411 that is spaced around the outside of the conductive metal 42. When a plugging groove 321 is formed on the top surface of the conductive member 32, an annular plugging space is jointly defined between the conductive member 32 and the side groove wall of the installation groove 31, and the first auxiliary positioning portion 411 is inserted into the plugging space.

[0057] With such a setting, on the one hand, the first auxiliary positioning portion 411 can provide guidance for the plugging and mating of the conductive member 32 and the conductive metal 42. On the other hand, during the plugging and unplugging operations, even if the operator is slightly skewed along the plugging and unplugging direction or sways left and right during the plugging and unplugging operations, the conductive member 32 will not be deformed, making the conductive member 32 have a longer service life. The outer peripheral side surface of the first auxiliary positioning portion 411 is in contact and cooperation with the side groove wall of the installation groove 31, and the inner peripheral side surface of the first auxiliary positioning portion 411 is attached to the outer peripheral surface of the conductive member 32.

[0058] With continued reference to Figure 3 and Figure 4 , a mating groove 421 is formed on the end face of the end of the conductive metal 42 of the plug 41. When the conductive member 32 is configured as a male plugging structure, the conductive member 32 is configured as a columnar member that can be plugged and mated with the mating groove 421, and the groove wall of the installation groove 31 is configured to support on the outer peripheral side of the conductive metal 42 when the plug 41 is inserted into the installation groove 31.

[0059] With such arrangement, when the plug 41 is inserted into the mounting groove 31 and the conductive member 32 is inserted into the mating groove 421, the side groove wall of the mounting groove 31 supports the outer wall of the conductive metal 42. On the one hand, it can provide guidance for the plugging and mating of the conductive member 32 and the mating groove 421. On the other hand, during the plugging and unplugging operation, even if the operator's plugging and unplugging direction is slightly skewed or shakes left and right during the plugging and unplugging operation, the conductive member 32 will not be deformed, thereby extending the service life of the conductive member 32.

[0060] In the present application, continue to refer to Figure 3 and Figure 4 The plug 41 further includes at least two second auxiliary positioning portions 412 spaced apart on the outside of the conductive metal 42 .

[0061] When the conductive member 32 is configured as a male plug structure, at least two snap-in grooves 323 are provided at the edge of the slot of the installation slot 31, and the at least two snap-in grooves 323 are configured to snap-in with at least two second auxiliary positioning portions 412 in a one-to-one correspondence. A snap hook is also provided at the end of the second auxiliary positioning portion 412 to facilitate better snap-in cooperation with the corresponding snap-in groove 323.

[0062] With such arrangement, the second auxiliary positioning portions 412 are snapped into the snap-in grooves 323 in a one-to-one correspondence, and after the plug 41 and the mounting groove 31 are plugged in and matched, the plug 41 can be prevented from being separated from the mounting groove 31 .

[0063] In the present application, refer to Figure 1 The photovoltaic junction box 100 also includes a transition piece 60 , a portion of which is located in the mounting groove 31 and is electrically connected to the conductive piece 32 ; another portion of which is located in the accommodating cavity 21 and is electrically connected to the bypass protection circuit 50 .

[0064] With such configuration, the electrical connection between the conductive member 32 and the bypass protection circuit 50 can be achieved through the transition member 60 .

[0065] Furthermore, two conductive tentacles 322 extending toward the transition piece 60 are provided on the outer peripheral side of the conductive piece 32 , and the conductive tentacles 322 are electrically connected to the transition piece 60 .

[0066] Such an arrangement facilitates electrical connection between the transition piece 60 and the outer surface of the conductive piece 32 .

[0067] Furthermore, the transition piece 60 may be constructed as a conductive sheet, and the transition piece 60 is overlapped on the copper sheet of the bypass protection circuit 50. In this way, the electrical connection between the transition piece 60 and the bypass protection circuit 50 can be achieved.

[0068] In the embodiment of the present application, the depth direction of the installation groove 31 is along the height direction of the box body 10 .

[0069] With such arrangement, the plug 41 of the external cable 40 is plugged into and unplugged from the mounting slot 31 in a direction along the height direction of the box body 10 , that is, the plug 41 is plugged in and unplugged perpendicular to the box body 10 , which is more convenient for operators to operate.

[0070] On the other hand, the embodiment of the present application further provides a photovoltaic junction box assembly, including at least one photovoltaic junction box 100 as described above. The structure, function, working principle, etc. of the photovoltaic junction box 100 have been described in detail above and will not be repeated here.

[0071] During the specific connection, three photovoltaic junction boxes 100 form a group, and the three photovoltaic junction boxes 100 in one group are respectively connected to the bus bars of the photovoltaic module and are electrically connected through the bus bars inside the photovoltaic module.

[0072] The connection of photovoltaic junction boxes 100 in different groups can be, for example, that one photovoltaic junction box 100 among three photovoltaic junction boxes 100 is connected to one photovoltaic junction box 100 in another group through an external cable 40. The conductive members 32 of the photovoltaic junction boxes 100 in the same group can all be set as female plug structures, or all be set as male plug structures, or one part can be set as a female plug structure and the other part can be set as a male plug structure, and the plug 41 of the external cable 40 matched therewith can be set as a matching type accordingly.

[0073] Reference Figure 2 and Figure 6 The external cable 40 may include a cable 43 and a plug 41 connected to one end of the cable 43 . Figure 2 A plug 41 at one end of a cable 43 is shown. Figure 6 FIG. 4 shows a situation where both ends of the cable 43 are connected to the plug 41 .

[0074] Reference Figure 2 In some possible implementations, the plug 41 may be configured in a bent shape, and the first auxiliary positioning portion 411 or the second auxiliary positioning portion 412 and the conductive metal 42 are all disposed on an end portion of the plug 41 that faces away from the cable 43 .

[0075] Reference Figure 5 In some possible implementations, the mounting groove 31 may also be provided on the side of the box body 10, so that the plug 41 may be inserted or removed in a horizontal direction.

[0076] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A photovoltaic junction box, characterized in that: include: A box body, the box body comprising an integrally formed main body and a connecting portion, the main body being configured with a receiving cavity, the connecting portion being configured with a mounting groove, the mounting groove being configured to be pluggable with a plug of an external cable; A bypass protection circuit is disposed in the accommodating cavity; and a conductive member, the conductive member being disposed in the mounting slot and electrically connected to the bypass protection circuit, the conductive member being configured to be electrically connected to a conductive metal of the plug when the plug is inserted into the mounting slot; Wherein, the notch of the mounting slot is located on the top side of the box body.

2. The photovoltaic junction box according to claim 1, characterized in that: The top surface of the conductive member is provided with an inserting slot, and the inserting slot is for inserting the conductive metal of the plug; or The conductive member is configured as a male plug structure to be plug-matched with the conductive metal member configured as a female plug structure.

3. The photovoltaic junction box according to claim 2, characterized in that: The plug further comprises a first auxiliary positioning portion spaced around the outside of the conductive metal; When a plug-in groove is provided on the top surface of the conductive member, an annular plug-in space is defined between the conductive member and the groove wall of the installation groove, and the first auxiliary positioning portion is inserted into the plug-in space.

4. The photovoltaic junction box according to claim 2, characterized in that: The end surface of the conductive metal of the plug is provided with a matching groove; When the conductive member is configured as a male plug structure, the conductive member is configured as a columnar member that can be plugged and matched with the matching groove, and the groove wall of the installation groove is configured to be supported on the outer peripheral side of the conductive metal when the plug is inserted into the installation groove.

5. The photovoltaic junction box according to claim 4, characterized in that: The plug further includes at least two second auxiliary positioning portions spaced apart and arranged outside the conductive metal; When the conductive member is configured as a male plug-in structure, at least two snap-in grooves are provided at the edge of the groove opening of the installation groove, and the at least two snap-in grooves are configured to snap-in with the at least two second auxiliary positioning portions in a one-to-one correspondence.

6. The photovoltaic junction box according to any one of claims 1 to 5, characterized in that: The photovoltaic junction box also includes a transition piece, a partial structure of which is located in the installation groove and electrically connected to the conductive piece; another partial structure of the transition piece is located in the accommodating cavity and electrically connected to the bypass protection circuit.

7. The photovoltaic junction box according to claim 6, characterized in that: Two conductive tentacles extending toward the transition piece are provided on the outer peripheral side of the conductive piece, and the conductive tentacles are electrically connected to the transition piece.

8. The photovoltaic junction box according to claim 6, characterized in that: The transition piece is constructed as a conductive sheet, and the transition piece is overlapped on the copper sheet of the bypass protection circuit.

9. The photovoltaic junction box according to any one of claims 1 to 5, characterized in that: The depth direction of the installation groove is along the height direction of the box body.

10. A photovoltaic junction box assembly, characterized in that: The method comprises at least one photovoltaic junction box according to any one of claims 1 to 9.

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