Wiring terminal, grid-connected box and photovoltaic power station

Abstract

The utility model discloses a wiring terminal, a grid-connected box and a photovoltaic power station, the wiring terminal comprises a terminal unit, the terminal unit comprises a housing, a conducting strip and a connecting piece, the housing is provided with an accommodating groove, and the housing is defined to have a height direction; the conducting strip is arranged in the containing groove, the conducting strip comprises an input section and an output section, the input section is bent to form at least two input tables, and the at least two input tables are arranged in a step shape in the height direction of the shell; the connecting piece comprises an input wiring piece and an output wiring piece, the input wiring piece is connected with the conduction input table and is used for connecting and fixing the input cable, and the output wiring piece is connected with the conduction output section and is used for connecting and fixing the output cable. According to the technical scheme of the utility model, the requirement that one wiring terminal is connected with at least two input cables and one output cable at the same time is met, the occupied space of the wiring terminal in photovoltaic equipment such as a grid-connected box is reduced, and the practicability and reliability of the wiring terminal are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a wiring terminal, a grid-connected box and photovoltaic equipment. Background Art

[0002] In the related art, the wiring between photovoltaic devices such as photovoltaic modules, photovoltaic inverters and grid-connected boxes of a photovoltaic power station can be connected using wiring terminals. By installing wiring terminals inside the photovoltaic devices, the wiring terminals can be used to connect the input cables and output cables between the photovoltaic devices, thereby realizing convenient wiring of the photovoltaic power station and improving the assembly efficiency of the photovoltaic power station.

[0003] However, most of the existing wiring terminals are connected to an input cable and an output cable. When a photovoltaic power station is equipped with multiple photovoltaic inverters, it is necessary to install multiple wiring terminals in the grid-connected box to connect to the multiple photovoltaic inverters respectively, and then connect the output ends of the multiple wiring terminals in parallel to the components in the grid-connected box. As a result, a large installation space is usually required to reserve in photovoltaic equipment such as the grid-connected box to set up the wiring terminals, which increases the overall volume of photovoltaic equipment such as the grid-connected box and reduces the practicality of the wiring terminals. Utility Model Content

[0004] The main purpose of the utility model is to provide a wiring terminal, a grid-connected box and a photovoltaic device, aiming to meet the demand of connecting at least two input cables and one output cable with one wiring terminal at the same time, reduce the space occupied by the wiring terminal in photovoltaic devices such as the grid-connected box, and further improve the practicality and reliability of the wiring terminal.

[0005] To achieve the above-mentioned purpose, the wiring terminal proposed in the utility model includes a terminal unit, which includes a shell, a conductive sheet and a connecting piece. The shell is provided with a receiving groove, which defines that the shell has a height direction; the conductive sheet is arranged in the receiving groove, and the conductive sheet includes an input section and an output section. The input section is bent to form at least two input platforms, and at least two input platforms are arranged in a stepped manner along the height direction of the shell; the connecting piece includes an input wiring piece and an output wiring piece. The input wiring piece is connected and conducted to the input platform and is used to connect and fix the input cable, and the output wiring piece is connected and conducted to the output section and is used to connect and fix the output cable.

[0006] Optionally, the shell includes a shell body and a protective cover plate, the shell body is provided with the accommodating groove; the protective cover plate is movably connected to the shell body and is used to open or close the notch of the accommodating groove.

[0007] Optionally, the inner side wall of the accommodating groove is provided with a slide rail, and the protective cover plate is provided with a slide protrusion, and the slide protrusion is movably arranged in the slide rail.

[0008] Optionally, a partition is provided in the receiving groove, and the partition is provided between the input section and the output section. A limit baffle is provided on one side of the protective cover plate facing the receiving groove, and the limit baffle is provided in the receiving groove and used to abut against the partition.

[0009] Optionally, the shell is further provided with a heat dissipation groove, and the heat dissipation groove and the accommodating groove are respectively arranged on two opposite sides of the shell.

[0010] Optionally, the connection terminal comprises at least two terminal units, and the at least two terminal units are detachably connected and arranged side by side.

[0011] Optionally, the housing is defined to have a first side wall and a second side wall facing each other, and the accommodating groove is located between the first side wall and the second side wall. The first side wall is provided with an assembly slide groove, and the second side wall is provided with an assembly protrusion, and the assembly protrusion of one terminal unit is movably arranged in the assembly slide groove of the terminal unit of another bell.

[0012] Optionally, the first side wall of the shell is also provided with one of a snap-in spring sheet or a snap-in protrusion, and the second side wall of the shell is also provided with the other of a snap-in spring sheet or a snap-in protrusion, and the snap-in spring sheet of one terminal unit is engaged and snap-in with the snap-in protrusion of another adjacent terminal unit.

[0013] Optionally, the first side wall of the housing is provided with a first hanging ear and a first avoidance hole, the second side wall of the housing is provided with a second hanging ear and a second avoidance hole, the first hanging ear is arranged opposite to the second avoidance hole, and the second hanging ear is arranged opposite to the first avoidance hole. The first hanging ear of one of the terminal units is movably arranged in the second avoidance hole of another adjacent terminal unit, the second hanging ear of one of the terminal units is movably arranged in the first avoidance hole of another adjacent terminal unit, and the first hanging ear and the second hanging ear are arranged in abutment with each other.

[0014] Optionally, the first hanging ear is provided with a mounting hole. And / or the second hanging ear is provided with a mounting hole.

[0015] The utility model also provides a grid-connected box, which comprises a box body and wiring terminals. The wiring terminals are the wiring terminals mentioned above, and the wiring terminals are arranged in the box body.

[0016] The utility model also provides a photovoltaic power station, which includes a photovoltaic inverter and a grid-connected box. The grid-connected box is the above-mentioned grid-connected box, and the grid-connected box is electrically connected to the photovoltaic inverter.

[0017] The technical solution of the utility model forms at least two input platforms by bending the input section of the conductive sheet, and can use the input wiring member to connect and fix at least two input cables one by one on the input platform, so that the output wiring member connects and fixes the output cable on the output section, so that the conductive sheet can conduct at least two input cables and one output cable at the same time, so that multiple photovoltaic inverters can be connected to the same grid-connected box at the same time, and the requirement of connecting at least two input cables and one output cable to one terminal unit at the same time is met, which is conducive to better reducing the number of wiring terminals configured in the photovoltaic device and reducing the space occupied by the wiring terminals in the photovoltaic device. Since the at least two input platforms formed by the bending of the input section of the conductive sheet are arranged in a stepped manner along the height direction, the at least two input cables can be stacked and arranged at the wiring terminals along the height direction, which effectively reduces the lateral width of the terminal unit, which is conducive to further reducing the area occupied by the wiring terminals in the photovoltaic device, and is convenient for the compact state of various components in the photovoltaic device, so as to better realize the miniaturization design of photovoltaic devices such as photovoltaic inverters and grid-connected boxes, improve the convenience of assembly layout of photovoltaic power stations, and thus improve the practicality and reliability of the wiring terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of an embodiment of the wiring terminal of the utility model;

[0020] Figure 2 for Figure 1 Cross-sectional view at AA in the middle;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the wiring terminal at another angle;

[0022] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0023] Figure 5 for Figure 1 A schematic structural diagram of an embodiment of a terminal unit of a wiring terminal;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure of the terminal unit from another angle;

[0025] Figure 7 for Figure 1 A schematic structural diagram of a wiring terminal according to an embodiment of a wiring terminal from a bottom perspective.

[0026] Description of Figure Numbers:

[0027]

[0028]

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] Most of the existing wiring terminals are connected to an input cable and an output cable. When a photovoltaic power station is provided with multiple photovoltaic inverters, it is necessary to install multiple wiring terminals in the grid-connected box to connect to the multiple photovoltaic inverters respectively, and then connect the output ends of the multiple wiring terminals in parallel to the components in the grid-connected box. As a result, a large installation space is usually reserved in photovoltaic equipment such as the grid-connected box to set up the wiring terminals, which increases the overall volume of photovoltaic equipment such as the grid-connected box and reduces the practicality of the wiring terminals. In view of the above problems, the utility model proposes a wiring terminal 1000.

[0035] Reference Figures 1 to 7 In an embodiment of the utility model, the terminal block 1000 includes a terminal unit 100, the terminal unit 100 includes a shell 10, a conductive sheet 30 and a connector 50, the shell 10 is provided with a receiving groove 111, and the shell 10 is defined to have a height direction; the conductive sheet 30 is arranged in the receiving groove 111, the conductive sheet 30 includes an input section 31 and an output section 33, the input section 31 is bent to form at least two input platforms 311, and the at least two input platforms 311 are arranged in a stepped manner along the height direction of the shell 10; the connector 50 includes an input wiring member 51 and an output wiring member 53, the input wiring member 51 is connected to the conductive input platform 311, and is used to connect and fix the input cable, and the output wiring member 53 is connected to the conductive output section 33, and is used to connect and fix the output cable.

[0036] It is understandable that the photovoltaic power station can connect the photovoltaic components to the photovoltaic inverter, so that the photovoltaic inverter regulates the electric energy absorbed and converted by the photovoltaic components, and then connect the photovoltaic inverter to the grid-connected box, use the grid-connected box to rectify the electric energy regulated by the photovoltaic inverter and then transmit it to the grid to realize the converted electric energy output of the photovoltaic power station, and ensure the stable operation of the photovoltaic power station. In photovoltaic equipment such as photovoltaic inverters or grid-connected boxes, wiring terminals 1000 can be set to realize the wiring of input cables and output cables. By using the plug-in wiring characteristics of the wiring terminals 1000, the cables can be connected to and from the photovoltaic equipment more conveniently, improving the convenience of disassembly and maintenance of the photovoltaic power station.

[0037] In a photovoltaic power station, when a higher-power photovoltaic operation is required, it is usually necessary to connect the output cables of multiple photovoltaic inverters to the same grid-connected box so that the grid-connected box can output the electric energy transmitted by the multiple photovoltaic inverters to the grid. Therefore, it is usually necessary to configure and install multiple wiring terminals 1000 in the grid-connected box, and then connect the multiple wiring terminals 1000 to the components in the grid-connected box to realize the grid-connected output of the photovoltaic power station.

[0038] In this embodiment, the terminal block 1000 may include a terminal unit 100, which may be connected and fixed in a photovoltaic device such as a grid-connected box by using a shell 10. By setting a receiving groove 111 on the shell 10, a conductive sheet 30 may be fixedly set in the receiving groove 111. The conductive sheet 30 may be a sheet structure with certain conductive properties formed by materials such as copper and copper alloy. By dividing the conductive sheet 30 into an input section 31 and an output section 33 along the extension direction of the conductive sheet 30, the input section 31 of the conductive sheet 30 may be bent and set so that the conductive sheet 30 forms a stepped structure arranged in a height direction at the input section 31, and the input section 31 may have at least two steps parallel to the plane where the output section 33 is located, and the step may be formed as an input platform 311 of the input section 31, and then at least two input contact points may be formed on a conductive sheet 30 using the input platform 311 of the input section 31, and one output contact point may be formed using the output end. By setting a connector 50 in the terminal unit 100, the connector 50 may include an input wiring member 51 and an output wiring member 53. By connecting the input wiring member 51 to the input platform 311, the input wiring member 51 is connected to the input platform 311; the output wiring member 53 is connected to the output section 33, the output wiring member 53 is connected to the output section 33, the end of the input cable of the photovoltaic equipment such as the grid-connected box can be fixed at the input wiring member 51, the input wiring member 51 is connected to and fixed to the input cable, and the end of the output cable of the photovoltaic equipment such as the grid-connected box is fixed at the output wiring member 53, the output wiring member 53 is connected to and fixed to the output cable, and then the input cable and the output cable can be connected and fixed to the conductive sheet 30 by using the connector 50, and the conductive properties of the conductive sheet 30 and the connector 50 are used to achieve conduction between the input cable and the output cable, thereby achieving stable wiring of the terminal block 1000 in the photovoltaic equipment and ensuring stable operation of the photovoltaic power station. Among them, the input wiring member 51 and the output wiring member 53 can be conductive bolts or conductive voltage plates, etc., and can be arranged by or adopt a combined structure of an OT terminal and a clamping component, so that the cable is passed through the circular ring end of the OT terminal, and the cable and the OT terminal are fixedly connected to the conductive sheet 30 by using the clamping component. This is beneficial to using the OT terminal to better improve the insulation safety of the wiring terminal 1000 and avoid the end of the cable from bifurcating, and then under the action of the connector 50, a stable conduction between the input cable or the output cable and the conductive sheet 300 is achieved.

[0039] Therefore, by bending the input section 31 of the conductive sheet 30 to form at least two input platforms 311, the input wiring member 51 can be used to connect and fix at least two input cables one by one on the input platform 311, and the output wiring member 53 can connect and fix the output cable on the output section 33, so that the conductive sheet 30 can simultaneously conduct at least two input cables and one output cable, so that multiple photovoltaic inverters can be connected to the same grid-connected box at the same time, meeting the requirement of one terminal unit 100 connecting at least two input cables and one output cable at the same time, which is conducive to better reducing the number of wiring terminals 1000 configured in the photovoltaic device and reducing the space occupied by the wiring terminals 1000 in the photovoltaic device. Since at least two input platforms 311 formed by bending the input section 31 of the conductive sheet 30 are arranged in a stepped manner in the height direction, at least two input cables can be stacked in the height direction at the terminal block 1000, which effectively reduces the lateral width of the terminal unit 100, is conducive to further reducing the occupied area of ​​the terminal block 1000 in the photovoltaic device, and facilitates the compact state of various components in the photovoltaic device, thereby better realizing the miniaturization design of photovoltaic devices such as photovoltaic inverters and grid-connected boxes, improving the convenience of assembly layout of photovoltaic power stations, and thus improving the practicality and reliability of the terminal block 1000.

[0040] Among them, the terminal unit 100 can be provided with through holes connected to the accommodating groove 111 on opposite sides of the housing 10, so that at least two input platforms 311 of the conductive sheet 30 can be exposed at the through holes on one side of the housing 10, and the output section 33 of the conductive sheet 30 can be exposed at the through holes on the other side of the housing 10, so that the input cable and the output cable can pass through the through holes into the accommodating groove 111 and connect with the input platform 311 and the output section 33, further improving the operation convenience of the wiring terminal 1000. When at least two input cables are connected to the input platforms 311 of the conductive sheet 30 one by one, the wiring can be started from the input platform 311 located at the bottom, so that multiple input cables are connected and fixed to multiple input platforms 311 in sequence from bottom to top. The wiring rule is used for wiring, which can effectively avoid the collision and interference between the input wiring member 51 located at the bottom and the input cable that has been connected above when the input wiring member 51 is connected and fixed to the input cable, thereby realizing convenient wiring of the wiring terminal 1000 and further improving the operation convenience and reliability of the wiring terminal 1000.

[0041] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 In one embodiment of the present invention, the shell 10 includes a shell body 11 and a protective cover 13 . The shell body 11 is provided with a receiving groove 111 . The protective cover 13 is movably connected to the shell body 11 and is used to open or close the notch of the receiving groove 111 .

[0042] In this embodiment, the shell 10 may include a shell body 11 and a protective cover plate 13. By moving the protective cover plate 13 on the shell body 11 and making the protective cover plate 13 cover the notch setting of the accommodating groove 111, the protective cover plate 13 can be moved to open the notch of the accommodating groove 111 when wiring or maintenance is required, so that the construction workers can use installation tools to disassemble and assemble the input cable and the input cable in the accommodating groove 111. After the wiring or maintenance is completed, the protective cover plate 13 can be moved again to close the notch of the accommodating groove 111, so that the conductive sheet 30 and the cable end in the accommodating groove 111 can be protected under the action of the protective cover plate 13, thereby ensuring the wiring stability and reliability of the wiring terminal 1000, reducing the impact on the wiring nodes of the wiring terminal 1000, and further improving the practicality and reliability of the wiring terminal 1000.

[0043] Reference Figures 5 to 7 In one embodiment of the present invention, a slide rail 1111 is provided on the inner side wall of the accommodating groove 111 , and a slide protrusion 131 is provided on the protective cover plate 13 . The slide protrusion 131 is movably disposed in the slide rail 1111 .

[0044] In this embodiment, the protective cover 13 can utilize the sliding protrusion 131 to slide in the slide rail 1111 on the inner wall of the receiving groove 111 to achieve relative movement of the protective cover 13 and the shell body 11. At this time, the sliding protrusion 131 can be set on both sides of the anti-slip cover so that the protective cover 13 can be inserted and slid in the receiving groove 111 as a whole, or the sliding protrusion 131 can be set on the bottom of the protective cover 13 facing the receiving groove 111, so that the protective cover 13 can be located above the notch of the receiving groove 111 to cover the receiving groove 111, thereby achieving a better protective effect of the protective cover 13. The movement of the protective cover 13 is achieved by utilizing the sliding protrusion 131 in the slide rail 1111. The protective cover 13 can be slid to open or close the notch of the accommodating groove 111 during the assembly process without the need to remove the protective cover 13 from the shell body 11 as a whole. This helps to better avoid the loss of the protective cover 13 after removal. At the same time, the protective cover 13 can be opened and closed more conveniently, further improving the operational convenience and reliability of the terminal block 1000.

[0045] Reference Figure 2 and Figure 7 In one embodiment of the utility model, a partition 1113 is provided in the receiving groove 111, and the partition 1113 is provided between the input section 31 and the output section 33. A limit baffle 133 is provided on one side of the protective cover 13 facing the receiving groove 111, and the limit baffle 133 is provided in the receiving groove 111 and is used to abut the partition 1113.

[0046] In this embodiment, the terminal unit 100 can use the separator 1113 to separate the input stage 311 and the output section 33 of the conductive sheet 30 by setting a separator 1113 in the receiving groove 111, so that the user can better distinguish the wiring area of ​​the wiring terminal 1000 and realize the convenient wiring operation of the wiring terminal 1000. At this time, by setting a limiting baffle 133 on the side of the protective cover 13 facing the receiving groove 111, the limiting baffle 133 can be in contact with the separator 1113 when the protective cover 13 completely covers the notch of the receiving groove 111, and then the limiting baffle 133 can be used to abut against the separator 1113 to limit the protective cover 13, so as to prevent the protective cover 13 from sliding out of the shell body 11, thereby further improving the structural stability and reliability of the wiring terminal 1000.

[0047] Reference Figure 2 and Figure 7 In one embodiment of the present invention, the housing 10 is further provided with a heat dissipation slot 113 , and the heat dissipation slot 113 and the receiving slot 111 are respectively provided on opposite sides of the housing 10 .

[0048] In this embodiment, the housing 10 may have an upper surface and a lower surface facing each other. In this case, a receiving groove 111 may be formed on the upper surface of the housing 10, and a heat dissipation groove 113 may be formed on the lower surface of the housing 10, so that a partition may be formed in the housing 10 to separate the receiving groove 111 and the heat dissipation groove 113. With the heat dissipation groove 113 formed on the lower surface of the housing 10, it is beneficial to utilize the heat dissipation groove 113 to better increase the heat dissipation area of ​​the terminal block 1000, so that the heat dissipation airflow can enter the heat dissipation groove 113 to take away the heat transferred from the wiring node of the conductive sheet 30 to the housing 10, thereby achieving a better heat dissipation effect and further improving the structural stability and reliability of the terminal block 1000. At the same time, the heat dissipation groove 113 can also well reduce the overall volume of the housing 10, which is beneficial to better reduce the overall material of the housing 10, facilitate reducing the production cost of the terminal block 1000, and further improve the practicality of the terminal block 1000.

[0049] Reference Figure 1 , Figure 3 and Figure 7 In one embodiment of the present invention, the connection terminal 1000 includes at least two terminal units 100, and the at least two terminal units 100 are detachably connected and arranged side by side.

[0050] In this embodiment, the wiring terminal 1000 may include at least two terminal units 100, and a connecting component may be set between two adjacent terminal units 100 to achieve mutual disassembly and assembly of any two adjacent terminal units 100. Furthermore, when more cables need to be connected between photovoltaic equipment such as photovoltaic inverters and grid-connected boxes, multiple terminal units 100 may be connected side by side to realize the expanded function of the wiring terminal 1000, so that the wiring terminal 1000 can meet the wiring requirements in more situations, meet the assembly requirements of the photovoltaic power station, and ensure the stable operation of the photovoltaic power station. Among them, since each terminal unit 100 connected side by side can meet the demand of connecting at least two input cables and one output cable at the same time, compared with the existing stacking assembly of the terminal blocks 1000, the use of multiple terminal units 100 connected side by side can ensure the stable wiring of multiple cables while better realizing the regular arrangement of multiple input cables. Compared with the existing stacking method of the terminal blocks 1000, it can also better reduce the space occupied by the terminal blocks 1000 in the photovoltaic equipment, realize the miniaturized design of the terminal blocks 1000, and further improve the practicality and reliability of the terminal blocks 1000.

[0051] Reference Figures 4 to 6 In one embodiment of the present invention, the housing 10 is defined to have a first side wall 115 and a second side wall 117 facing each other, and the receiving groove 111 is located between the first side wall 115 and the second side wall 117. The first side wall 115 is provided with an assembly slide groove 1151, and the second side wall 117 is provided with an assembly protrusion 1171. The assembly protrusion 1171 of one terminal unit 100 is movably arranged in the assembly slide groove 1151 of another terminal unit 100.

[0052] In this embodiment, the terminal unit 100 can be respectively provided with an assembly groove 1151 and an assembly protrusion 1171 on the first side wall 115 and the second side wall 117 opposite to each other of the shell 10, so that when two adjacent terminal units 100 in the terminal block 1000 are disassembled and assembled with each other, the assembly protrusion 1171 on the second side wall 117 of one terminal unit 100 can be inserted into the assembly groove 1151 on the first side wall 115 of the other terminal unit 100 and moved, so that the terminal unit 100 can utilize the matching installation of the assembly protrusion 1171 and the assembly groove 1151 on both sides to realize the side-by-side disassembly and assembly connection of multiple terminal units 100, so that multiple terminal units 100 can disassemble and assemble the first side wall 115 and the second side wall 117 side by side in sequence, and at the same time, it is convenient to disassemble and assemble the terminal block 1000 more conveniently by sliding the terminal unit 100, further improving the convenience of disassembly and assembly of the terminal block 1000. In addition, by cooperating to provide a plurality of assembly grooves 1151 and assembly protrusions 1171 on the first side wall 115 and the second side wall 117 of the shell 10 of the terminal unit 100, the connection area between two adjacent terminal units 100 can be further increased by utilizing the cooperating connection of the plurality of assembly grooves 1151 and the plurality of assembly protrusions 1171, thereby further improving the structural stability and reliability of the terminal block 1000.

[0053] Reference Figures 3 to 6 In one embodiment of the utility model, the first side wall 115 of the shell 10 is also provided with one of the snap-in springs 1153 or the snap-in protrusions 1173, and the second side wall 117 of the shell 10 is also provided with the other of the snap-in springs 1153 or the snap-in protrusions 1173, and the snap-in spring 1153 of one terminal unit 100 is engaged with the snap-in protrusion 1173 of another adjacent terminal unit 100.

[0054] In this embodiment, a snap-on spring piece 1153 is provided on the first side wall 115 of the shell 10. An opening is provided on the first side wall 115 of the shell 10, and a sheet structure with a certain elasticity is installed and connected at the opening to form the snap-on spring piece 1153, so that the snap-on spring piece 1153 can be elastically deformed and retracted into the shell 10 when an external force is applied, and can be reset when the external force disappears and the elastic deformation is restored. At this time, by providing a limit locking protrusion on the snap-on spring piece 1153 and providing a snap-on protrusion 1173 on the second side wall 117 of the housing 10, when two adjacent terminal units 100 are assembled through the assembly protrusion 1171 and the assembly slide groove 1151, the snap-on protrusion 1173 on the second side wall 117 of one terminal unit 100 can abut against the limit locking protrusion on the first side wall 115 of another adjacent terminal unit 100 during the sliding process, so that the limit locking protrusion is subjected to the force of the snap-on protrusion 1173 and drives the snap-on spring piece 1153 to elastically retract. Similarly, the housing 10 can also provide the snap-on spring piece 1153 on the second side wall 117 and the snap-on protrusion 1173 on the first side wall 115. At this time, the arrangement of the snap-on spring piece 1153 on the second side wall 117 and the arrangement of the snap-on protrusion 1173 on the first side wall 115 can be the same as the above-mentioned specific arrangement method, which will not be repeated here.

[0055] Furthermore, when two adjacent terminal units 100 are assembled to a side-by-side position, the locking protrusion 1173 can be disengaged from the contact with the limit locking protrusion. At this time, the locking spring 1153 can restore its elastic deformation when the external force of the locking protrusion 1173 disappears, thereby resetting the limit locking protrusion to one side of the locking protrusion 1173, thereby realizing the locking connection between the locking spring 1153 and the locking protrusion 1173. This is beneficial for limiting the position of two adjacent terminal units 100 by utilizing the locking connection between the locking spring 1153 and the locking protrusion 1173, avoiding relative movement of two adjacent terminal units 100 in the terminal block 1000 after assembly, ensuring the stable operation of the terminal block 1000 in the photovoltaic device, and further improving the structural stability and reliability of the terminal block 1000.

[0056] Reference Figures 5 to 7In one embodiment of the utility model, the first side wall 115 of the housing 10 is provided with a first hanging ear 1155 and a first avoidance hole 1157, the second side wall 117 of the housing 10 is provided with a second hanging ear 1175 and a second avoidance hole 1177, the first hanging ear 1155 and the second avoidance hole 1177 are arranged opposite to each other, and the second hanging ear 1175 and the first avoidance hole 1157 are arranged opposite to each other. The first hanging ear 1155 of a terminal unit 100 is movably arranged in the second avoidance hole 1177 of another adjacent terminal unit 100, the second hanging ear 1175 of a terminal unit 100 is movably arranged in the first avoidance hole 1157 of another adjacent terminal unit 100, and the first hanging ear 1155 and the second hanging ear 1175 are arranged in abutment with each other.

[0057] In this embodiment, the terminal unit 100 can also be provided with a first hanging ear 1155 and a first avoidance hole 1157 on the first side wall 115 of the shell 10, and a second hanging ear 1175 and a second avoidance hole 1177 are provided on the second side wall 117 of the shell 10. At this time, by making the first hanging ear 1155 and the second avoidance hole 1177 opposite to each other, and making the second hanging ear 1175 and the first avoidance hole 1157 opposite to each other, when two adjacent terminal units 100 are relatively slidably assembled, the first hanging ear 1155 on the first side wall 115 of one terminal unit 100 can enter the second avoidance hole 1177 of the second side wall 117 of the other terminal unit 100 and move, and at the same time, the second side wall of one terminal unit 100 can be moved to the second side wall 117 of the other terminal unit 100. The second hanging ear 1175 on 117 enters into the first avoidance hole 1157 of the first side wall 115 of another terminal unit 100 and moves, so that the first hanging ear 1155 and the second hanging ear 1175 can be mutually accommodated in two adjacent terminal units 100, which is beneficial to utilize the first hanging ear 1155 and the second hanging ear 1175 to better increase the contact area of ​​the two adjacent terminal units 100, further improve the connection stability and reliability of the terminal units 100, and at the same time, the connecting components between the terminal units 100 can be accommodated with each other, which is also beneficial to further reduce the overall volume of the terminal unit 100 after assembly, better realize the miniaturization design of the terminal 1000, and reduce the space occupied by the terminal 1000 in the photovoltaic device. In addition, when two adjacent terminal units 100 are assembled to a side-by-side position, the first hanging ear 1155 and the second hanging ear 1175 can be made to abut against each other, which is beneficial for using the first hanging ear 1155 and the second hanging ear 1175 to limit the two adjacent terminal units 100 after the terminal units 100 are assembled in place, avoiding relative movement of the two terminal units 100, ensuring the stable operation of the terminal block 1000 in the photovoltaic equipment, and further improving the structural stability and reliability of the terminal block 1000.

[0058] Reference Figures 5 to 7In one embodiment of the present invention, the first hanging ear 1155 is provided with a mounting hole 119 . And / or, the second hanging ear 1175 is provided with a mounting hole 119 .

[0059] In this embodiment, by setting a mounting hole 119 at the first hanging ear 1155, when the terminal block 1000 is assembled into a photovoltaic device such as a photovoltaic inverter or a grid-connected box, the terminal block 1000 can be connected and fixed to the photovoltaic device by passing through the mounting hole 119 with fasteners such as screws or pins, so that the first hanging ear 1155 can be used for both the connection limit of two adjacent terminal units 100 and the assembly of the terminal block 1000 in the photovoltaic device, which is conducive to better utilizing the first hanging ear 1155 with a certain area to increase the contact area between the terminal block 1000 and the photovoltaic device, thereby ensuring the stable operation of the terminal block 1000 in the photovoltaic device and further improving the practicality and assembly reliability of the terminal block 1000.

[0060] Similarly, by providing a mounting hole 119 at the second hanging ear 1175, when the terminal block 1000 is assembled into a photovoltaic device such as a photovoltaic inverter or a grid-connected box, the terminal block 1000 can be connected and fixed to the photovoltaic device by passing through the mounting hole 119 with fasteners such as screws or pins, so that the second hanging ear 1175 can be used for both the connection limit of two adjacent terminal units 100 and the assembly of the terminal block 1000 in the photovoltaic device, which is conducive to better utilizing the second hanging ear 1175 with a certain area to increase the contact area between the terminal block 1000 and the photovoltaic device, thereby ensuring the stable operation of the terminal block 1000 in the photovoltaic device and further improving the practicality and assembly reliability of the terminal block 1000.

[0061] Among them, the terminal block 1000 can be provided with a mounting hole 119 only on the first hanging ear 1155 or the second hanging ear 1175 to realize the disassembly and assembly of the terminal block 1000 in the photovoltaic device, or the mounting hole 119 can be provided on both the first hanging ear 1155 and the second hanging ear 1175, so that the terminal block 1000 can have components connected to the photovoltaic device on both opposite sides, which is conducive to better improving the connection stability and reliability of the terminal block 1000 in the photovoltaic device.

[0062] The utility model also proposes a grid-connected box, which includes a box body and a wiring terminal 1000. The specific structure of the wiring terminal 1000 refers to the above embodiment. Since the grid-connected box adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0063] The utility model also proposes a photovoltaic power station, which includes a photovoltaic inverter and a grid-connected box. The specific structure of the grid-connected box refers to the above-mentioned embodiment. Since the photovoltaic power station adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A terminal block, characterized in that: The connection terminal comprises a terminal unit, and the terminal unit comprises: A housing, wherein the housing is provided with a receiving groove, defining the housing to have a height direction; A conductive sheet, the conductive sheet is arranged in the accommodating groove, the conductive sheet comprises an input section and an output section, the input section is bent to form at least two input platforms, and the at least two input platforms are arranged in a stepped manner along the height direction of the shell; The connecting piece includes an input wiring piece and an output wiring piece. The input wiring piece is connected and conducted to the input stage and used to connect and fix the input cable. The output wiring piece is connected and conducted to the output section and used to connect and fix the output cable.

2. The terminal block according to claim 1, characterized in that: The housing comprises: A shell body, wherein the shell body is provided with the accommodating groove; A protective cover plate is movably connected to the shell body and is used to open or close the notch of the accommodating groove.

3. The terminal block according to claim 2, characterized in that: The inner side wall of the accommodating groove is provided with a slide rail, and the protective cover plate is provided with a slide protrusion, and the slide protrusion is movably arranged in the slide rail.

4. The connection terminal according to claim 3, characterized in that: A separator is provided in the containing groove, and the separator is provided between the input section and the output section; A limiting baffle is provided on one side of the protective cover plate facing the accommodating groove. The limiting baffle is arranged in the accommodating groove and is used to abut against the partition.

5. The connecting terminal according to any one of claims 1 to 4, characterized in that: The shell is further provided with a heat dissipation groove, and the heat dissipation groove and the containing groove are respectively arranged on two opposite sides of the shell.

6. The connecting terminal according to any one of claims 1 to 4, characterized in that: The connection terminal comprises at least two terminal units, and the at least two terminal units are detachably connected and arranged side by side.

7. The connection terminal according to claim 6, characterized in that: The shell is defined to have a first side wall and a second side wall facing each other, and the receiving groove is located between the first side wall and the second side wall; The first side wall is provided with an assembly slot, and the second side wall is provided with an assembly protrusion. The assembly protrusion of one terminal unit can be movably arranged in the assembly slot of the terminal unit of another bell.

8. The connection terminal according to claim 7, characterized in that: The first side wall of the shell is also provided with one of a snap-in spring sheet or a snap-in protrusion, and the second side wall of the shell is also provided with the other of a snap-in spring sheet or a snap-in protrusion. The snap-in spring sheet of one terminal unit is engaged with the snap-in protrusion of another adjacent terminal unit.

9. The connection terminal according to claim 7, characterized in that: The first side wall of the shell is provided with a first hanging ear and a first avoidance hole, the second side wall of the shell is provided with a second hanging ear and a second avoidance hole, the first hanging ear is arranged opposite to the second avoidance hole, and the second hanging ear is arranged opposite to the first avoidance hole; The first hanging ear of one terminal unit is movably arranged in the second avoidance hole of another adjacent terminal unit, and the second hanging ear of one terminal unit is movably arranged in the first avoidance hole of another adjacent terminal unit, and the first hanging ear and the second hanging ear are arranged in cooperation and abutment.

10. The connection terminal according to claim 9, characterized in that: The first hanging ear is provided with a mounting hole; And / or, the second hanging ear is provided with a mounting hole.

11. A grid-connected box, characterized in that: The grid-connected box comprises a box body and connection terminals, wherein the connection terminals are the connection terminals as described in any one of claims 1 to 10, and the connection terminals are arranged in the box body.

12. A photovoltaic power station, characterized in that: The photovoltaic power station comprises a photovoltaic inverter and a grid-connected box, wherein the grid-connected box is the grid-connected box according to claim 11, and the grid-connected box is electrically connected to the photovoltaic inverter.

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