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, and relates to the technical field of photovoltaic power stations. The terminal body comprises a shell and an electric conductor located in the shell, the electric conductor is provided with two connecting ends which are arranged at a preset included angle, each connecting end is provided with a port used for being connected with a wire, and the shell comprises a first branch part and a second branch part which are arranged at the preset included angle; and the first branch part and the second branch part of the shell correspond to the two connecting ends of the electric conductor respectively. According to the wiring terminal provided by the invention, by arranging the two connecting ends with the preset included angle, the bending angle of the cable can be reduced, so that electrical equipment can be conveniently connected, and the convenience of connecting the cable by the wiring terminal is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic power stations, and more specifically, to a wiring terminal, a grid-connected box, and a photovoltaic power station. Background Art

[0002] Wiring between various electrical devices and components can be done using wiring terminals, but since the cables connected to the wiring terminals need to be bent before connecting to the various electrical devices, the connection is inconvenient.

[0003] Therefore, how to improve the convenience of connecting cables with terminal blocks has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present application is to provide a wiring terminal to improve the convenience of connecting the wiring terminal to cables.

[0005] Another object of the present application is to provide a grid-connected box having the above-mentioned connection terminal.

[0006] Another object of the present application is to provide a photovoltaic power station having the above-mentioned grid-connected box.

[0007] To achieve the above objectives, this application provides the following technical solutions:

[0008] A wiring terminal, comprising:

[0009] The terminal body includes a shell and a conductor located in the shell, the conductor has two connecting ends arranged at a preset angle, and each connecting end is provided with a port for connecting a wire, the shell includes a first section and a second section arranged at the preset angle, and the first section and the second section of the shell respectively correspond to the two connecting ends of the conductor.

[0010] Optionally, in the above-mentioned terminal block, the port includes:

[0011] A wire entry hole is provided on the conductor, and is used for inserting a wire;

[0012] A clamping hole is provided on the conductor, the axes of the wire entry hole and the clamping hole intersect, the clamping hole is used to be fixedly matched with a fastener, and the clamping hole and the wire entry hole are connected so that the fastener can clamp the wire in the wire entry hole.

[0013] Optionally, in the above-mentioned wiring terminal, at least one of the connection ends has at least two wire entry holes, and the number of the clamping holes matches the number of the wire entry holes.

[0014] Optionally, in the above-mentioned wiring terminal, at least one of the connection ends includes an insertion space, and the insertion space is used to insert a connection terminal of a wire;

[0015] A conductive voltage block is provided on the conductor, and the insertion space is formed between the conductive voltage block and the conductor.

[0016] Optionally, in the above-mentioned wiring terminal, a first mounting hole is provided on the conductive voltage block;

[0017] At least one of the wire entry holes is a first wire entry hole, the pressing hole corresponding to the first wire entry hole is a first pressing hole, the first pressing hole is connected to the first mounting hole, and the connecting terminal has a connecting hole;

[0018] The first mounting hole and the first pressing hole are both used to communicate with the connecting hole of the connecting terminal, so that the fastener can fix the connecting terminal through the first mounting hole, the connecting hole and the first pressing hole.

[0019] Optionally, in the above-mentioned terminal block, at least one of the wire entry holes is a second wire entry hole, the clamping hole corresponding to the second wire entry hole is a second clamping hole, and the second clamping hole and the first clamping hole are staggered and distributed on the same end face of the conductor.

[0020] Optionally, in the above-mentioned terminal block, the conductive voltage block is also provided with a second mounting hole, and the second mounting hole, the plug-in space and the second clamping hole are connected in sequence so that the fastener can fix the OT terminal through the second mounting hole, the connecting hole and the second clamping hole.

[0021] Optionally, in the above-mentioned terminal block, a notch for installing the conductive voltage block is provided on the conductor.

[0022] Optionally, in the above-mentioned terminal block, the housing includes an opening and a cover plate movably disposed at the position of the opening.

[0023] Optionally, in the above-mentioned terminal block, the opening extends from one end of the housing to the other end, and the one end and the other end of the housing correspond to the two connecting ends respectively;

[0024] The cover plate has a first end and a second end that are oppositely disposed. The first end of the cover plate is hinged to the housing, and the second end of the cover plate is detachably connected to the housing.

[0025] Optionally, in the above-mentioned terminal, a fixing hole is provided on the terminal body, and the terminal is fixed to the installation position through the fixing hole; and / or,

[0026] The terminal body is provided with a guide rail slot, and the guide rail slot is used to cooperate with the guide rail of the installation position of the wiring terminal.

[0027] A grid-connected box comprises a plurality of connection terminals as described above; one of two adjacent connection terminals is located within the preset angle of the other.

[0028] Optionally, in the above-mentioned grid-connected box, the wiring terminals include a first wiring terminal for connecting a live wire and a second wiring terminal for connecting a neutral wire, and a port diameter of the first wiring terminal is larger than a port diameter of the second wiring terminal.

[0029] A photovoltaic power station comprises the grid-connected box described above.

[0030] The wiring terminal provided in this application, by providing two connecting ends at a predetermined angle, each with a connection port, allows the input and output wires to be connected to the ports of the two connecting ends, respectively, thereby ensuring that current flows from the input wire through the wiring terminal to the output wire. Furthermore, because the two connecting ends have a predetermined angle, the bending angle of the cable can be reduced, thereby facilitating the connection of various electrical devices and improving the convenience of connecting the terminal to the cable.

[0031] The technical features mentioned above, the technical features described below, and the technical features shown individually in the accompanying drawings may be combined arbitrarily, as long as the combined technical features do not conflict with each other. All possible feature combinations are technical contents explicitly described in this document. Any of the multiple sub-features included in the same statement can be applied independently and does not necessarily have to be applied in conjunction with the other sub-features. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0033] Figure 1 An isometric view of a terminal block provided in an embodiment of the present application;

[0034] Figure 2 A front view of a terminal block provided in an embodiment of the present application;

[0035] Figure 3 A side view of a terminal block provided in an embodiment of the present application;

[0036] Figure 4 A top view of the connection terminal provided in an embodiment of the present application;

[0037] Figure 5 An isometric view of the assembly of the conductor and the conductive voltage block provided in an embodiment of the present application;

[0038] Figure 6 A front view of the assembly of the conductor and the conductive voltage block provided in an embodiment of the present application;

[0039] Figure 7 A side view of the assembly of the conductor and the conductive voltage block provided in an embodiment of the present application;

[0040] Figure 8 A top view of the assembly of the conductor and the conductive voltage block provided in an embodiment of the present application;

[0041] Figure 9 A schematic diagram of the structure of a conductor provided in an embodiment of the present application;

[0042] Figure 10 A schematic cross-sectional view of the wiring terminal provided in the embodiment of the present application Figure 1 ;

[0043] Figure 11 A schematic cross-sectional view of the wiring terminal provided in the embodiment of the present application Figure 2 ;

[0044] Figure 12 A schematic diagram of the structure of the OT terminal provided in an embodiment of the present application;

[0045] Figure 13 A schematic diagram of the staggered distribution of multiple connection terminals provided in an embodiment of the present application;

[0046] Figure 14 This is a schematic structural diagram of the grid-connected box provided in an embodiment of the present application.

[0047] Among them, 100 is the terminal body, 101 is the shell, 1011 is the first sub-shell, 1012 is the second sub-shell, 1013 is the first extension arm, 1014 is the groove, 1015 is the second extension arm, 1016 is the protrusion, 1017 is the first sub-section, 1018 is the second sub-section, 102 is the conductor, 1021 is the first wire entry hole, 1022 is the notch, 1023 is the second wire entry hole, 1024 is the first pressing hole, 1025 is the second pressing hole , 103 is a conductive voltage block, 1031 is a first mounting hole, 1032 is a second mounting hole, 104 is a plug-in space, 105 is an input end, 106 is an output end, 107 is an opening, 108 is a cover plate, 1081 is a hook, 109 is a card slot, 110 is a fixing hole, 111 is a guide rail card slot, 112 is an OT terminal, 1121 is a connection hole, 113 is a connection end, 114 is a port, 1141 is a wire entry hole, and 1142 is a pressing hole;

[0048] 200 is a grid-connected box, 201 is a first wiring terminal, and 202 is a second wiring terminal. DETAILED DESCRIPTION

[0049] The core of this application is to provide a wiring terminal to improve the convenience of connecting cables with the wiring terminal.

[0050] Another core of the present application is to provide a grid-connected box having the above-mentioned connection terminals.

[0051] Another core of the present application is to provide a photovoltaic power station having the above-mentioned grid-connected box.

[0052] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] Wiring between various electrical devices and components can be done using wiring terminals, but since the cables connected to the wiring terminals need to be bent before connecting to the various electrical devices, the connection is inconvenient.

[0054] In a photovoltaic power plant, wiring between electrical equipment such as photovoltaic modules, inverters, and grid-connected boxes is typically accomplished using terminal blocks. Installing terminal blocks inside the grid-connected box facilitates connecting input and output cables between devices, enabling convenient wiring and improving assembly efficiency. The grid-connected box's output cables are typically aluminum alloy cables. Because aluminum alloy conductors have poorer electrical conductivity than copper conductors, larger diameter aluminum alloy cables are required to ensure proper conductivity. However, the larger diameter and lower flexibility of aluminum alloy cables result in a larger bending radius, making bending difficult during installation and reducing connection efficiency.

[0055] For this reason, Figures 1 to 9 As shown, the embodiment of the present application discloses a wiring terminal, including a terminal body 100. By providing two connection ends 113 at a preset angle on the conductor 102, the bending angle of the cable can be reduced, thereby reducing the bending radius of the aluminum alloy wire at the output end of the grid connection box, reducing the difficulty of bending the aluminum alloy wire, and improving the installation efficiency of the grid connection box.

[0056] The following will be combined Figures 1 to 14 The connection terminals disclosed in the embodiments of the present application are specifically explained and illustrated.

[0057] like Figures 1 to 4 As shown, the terminal body 100 includes a shell 101 and a conductor 102 located in the shell 101, and the conductor 102 has two connection ends 113 set at a preset angle, and a wiring port 114 is provided at each connection end 113, and the central axes of the two ports 114 have a preset angle. At the same time, the shell 101 includes a first division 1017 and a second division 1018, and the first division 1017 and the second division 1018 of the shell 101 are set at the same preset angle as the two connection ends 113 of the conductor 102, and the first division 1017 and the second division 1018 of the shell 101 respectively correspond to the two connection ends 113 of the conductor 102. In addition, the port 114 is provided at the connection end 113 of the conductor 102, thereby ensuring the conductivity of the terminal block, so that when the wires are respectively connected to the ports 114 of the two connection ends 113, the current can flow through the terminal body 100. For ease of understanding, as shown Figure 1 and Figure 4As shown, the two connection ends 113 of the conductor 102 are defined as the input end 105 and the output end 106, respectively, and the angle between the input end 105 and the output end 106 is defined as γ. The preset angle can be an acute angle, such as 30°, 45°, or 60°, or an obtuse angle, such as 120°, 135°, or 150°, to reduce the bending angle of the cable, thereby facilitating the connection of various electrical devices and components and improving the convenience of connecting the terminal block to the cable. It should be noted that the number of ports 114 of each connection end 113 can be set to one, two, three, or more according to actual needs, and this is not limited herein.

[0058] In some embodiments, as Figure 14 As shown, the port 114 of the input end 105 can be connected to the cable of the photovoltaic module, and the port 114 of the output end 106 can be connected to the cable of the output end of the grid-connected box 200, thereby ensuring that the electrical energy generated by the photovoltaic module can flow to the output end of the grid-connected box 200 through the terminal block and ultimately be connected to the overhead insulated aluminum wire of the power grid. Of course, the cables connected to the port 114 of the input end 105 and the port 114 of the output end 106 can be made of different materials. For example, the port 114 of the input end 105 can be connected to the copper wire of the photovoltaic module, while the port 114 of the output end 106 can be connected to the output end of the grid-connected box 200 via an aluminum alloy wire. Since there is a preset angle γ between the input end 105 and the output end 106 of the terminal body 100, the bending radius of the aluminum alloy wire at the output end of the grid-connected box 200 can be reduced, thereby reducing the difficulty of bending the aluminum alloy wire and improving the installation efficiency of the grid-connected box 200.

[0059] Preferably, the input end 105 and output end 106 of the conductor 102 can be arranged perpendicular to each other, that is, the terminal body 100 can adopt an L-shaped structure. In this case, the preset angle γ between the two connecting ends 113 is 90°. When the aluminum alloy wire at the output end of the grid connection box 200 is connected to the port 114 of the output end 106 of the terminal body 100, it can pass directly through the grid connection box 200 without bending, thereby connecting to the overhead insulated aluminum wire of the power grid, improving the connection efficiency of the terminal block.

[0060] In order to facilitate the connection of the wire to the port 114 of the conductor 102, in some embodiments, as Figure 9 As shown, the port 114 includes a wire entry hole 1141 provided on the conductor 102 and a pressing hole 1142 provided on the conductor 102, and the axes of the wire entry hole 1141 and the pressing hole 1142 intersect, and the wire entry hole 1141 and the pressing hole 1142 are connected. When the wire is inserted into the wire entry hole 1141 on the conductor 102 and electrically connected to the conductor 102, at this time, the fastener can be inserted into the wire entry hole 1141 through the pressing hole 1142, thereby pressing the wire in the wire entry hole 1141 to prevent the wire in the wire entry hole 1141 from falling out, as shown in FIG. Figure 11 shown.

[0061] In some embodiments, the wire entry hole 1141 is provided on the end face of the conductor 102, and the clamping hole 1142 is provided on the top face of the conductor 102, and the angle between the axes of the wire entry hole 1141 and the clamping hole 1142 can be 30°, 45°, etc. Preferably, the angle between the axes of the wire entry hole 1141 and the clamping hole 1142 is 90°, so that the fastener can better clamp the wire to ensure the reliability of the connection between the wire and the terminal, and avoid the phenomenon of false connection. It should be noted that the top face of the conductor 102 is the side of the terminal away from the installation position. After the wire is passed through the wire entry hole 1141, the fastener can be passed from the clamping hole 1142 to the wire entry hole 1141 until it abuts against the wire in the wire entry hole 1141, so that the fastener clamps the wire passed through the wire entry hole 1141 to ensure the reliability of the connection between the wire and the terminal.

[0062] In some embodiments, the clamping hole 1142 can be a threaded hole, and the fastener can be installed and tightened using an internal hexagonal or external hexagonal bolt, which can avoid slipping of the screwdriver and loose connections when tightening, making on-site wiring more flexible, convenient and reliable.

[0063] To meet the needs of actual scenarios, at least two wire entry holes 1141 are provided at the connection end 113 of at least one conductor 102. The connection end 113 can be either the input end 105 or the output end 106, depending on the actual situation. Of course, the number of wire entry holes 1141 at the connection end 113 can be two, three, or more. At the same time, the number of clamping holes 1142 is adapted to the number of wire entry holes 1141 to improve the applicability of the terminal block, thereby meeting the needs of actual scenarios for connecting multiple wires.

[0064] Each wire entry hole 1141 may be coaxially arranged along the end surface of the conductor 102 , and each pressing hole 1142 may be coaxially arranged along the top surface of the conductor 102 , so that the pressing hole 1142 and the wire entry hole 1141 are adapted to each other.

[0065] In some embodiments, when the wire entry holes 1141 are coaxially arranged along the horizontal direction of the end surface of the conductor 102, the arrangement direction of the compression holes 1142 can be arranged parallel to the arrangement direction of the wire entry holes 1141, that is, the center line of each compression hole 1142 is parallel to the center line of each wire entry hole 1141, and each compression hole 1142 is connected to the wire entry hole 1141 at the corresponding position to ensure the reliability of the wire connection in each wire entry hole 1141. Of course, the compression holes 1142 can also be staggered on the top surface of the conductor 102, and each compression hole 1142 is connected to the wire entry hole 1141 at the corresponding position.

[0066] In other embodiments, when each wire entry hole 1141 is coaxially arranged along the vertical direction of the end face of the conductor 102, the arrangement direction of each clamping hole 1142 can be arranged parallel to the extension direction of the wire entry hole 1141. At the same time, the extension depth of each wire entry hole 1141 increases successively from the top surface of the conductor 102 to the bottom surface of the conductor 102, and the depth of each clamping hole 1142 increases successively from the end face of the conductor 102 to the direction away from the end face of the conductor 102, so that each clamping hole 1142 is connected with the wire entry hole 1141 at the corresponding position to ensure the reliability of the wire connection in each wire entry hole 1141.

[0067] In other embodiments, the wire entry holes 1141 may also be staggered along the end surface of the conductor 102, that is, the wire entry holes 1141 are located at the diagonal position of the end surface of the conductor 102, and at the same time, the clamping holes 1142 are staggered on the top surface of the conductor 102, and each clamping hole 1142 is connected to the wire entry hole 1141 at the corresponding position, thereby reducing the volume of the conductor 102 and further reducing the space occupied by the terminal block during installation.

[0068] In order to adapt to more wiring methods of wires and meet the needs of different scenarios, such as Figures 5 to 12 As shown, at least one connection end 113 includes an insertion space 104 , so that the connection end 113 can insert a straight-through bare wire into the wire entry hole 1141 , and can also insert a wire with a connection terminal into the insertion space 104 .

[0069] In some embodiments, a conductive block 103 is provided on the conductor 102, and a plug-in space 104 for plugging in a wire connection terminal is formed between the conductive block 103 and the conductor 102. Figure 6 Of course, both connection ends 113 of the conductor 102 may also be provided with a plug-in space 104 so that both the input end 105 and the output end 106 can be connected in two ways, thereby meeting the use requirements of different scenarios.

[0070] In some embodiments, the connection terminal of the wire has a connection hole 1121, and the connection terminal has a crimping end connected to the wire and a wiring end connected to the wiring terminal, and the connection hole 1121 is provided on the wiring end of the connection terminal. At the same time, a crimping hole is provided on the conductive block 103, and a fixing hole is provided on the top surface of the conductor 102, and both the crimping hole and the fixing hole are connected to the connection hole 1121. The fixing hole can be a threaded hole. When the wiring end of the connection terminal is inserted into the insertion space 104, the fastener can be passed through the crimping hole and the connection hole 1121 in sequence, and threadedly engaged with the fixing hole, thereby fixing the wiring end of the connection terminal to the connection end 113 of the conductor 102, thereby ensuring the reliability of the connection between the wire of the connection terminal and the wiring terminal.

[0071] In some embodiments, as Figure 12 As shown, the connection terminal for the wire can be an OT terminal 112, which consists of a circular terminal and a cylindrical crimping terminal, with a connection hole 1121 located on the circular terminal. When the terminal of the OT terminal 112 is inserted into the insertion space 104, the fastener can be passed through the crimping hole and the connection hole 1121 in sequence and threadedly engaged with the fixing hole, thereby fixing the terminal of the OT terminal 112 to the connection end 113 of the conductor 102, ensuring the reliability of the connection between the wire of the OT terminal 112 and the terminal. Of course, the connection terminal for the wire can also be an SC terminal, a DT terminal, etc., which is not limited here.

[0072] The conductive block 103 and the conductor 102 may be of an integrated structure or a separate structure.

[0073] In some embodiments, the conductive voltage block 103 and the conductor 102 are an integrated structure, and the crimping hole of the conductive voltage block 103 can be a threaded hole. The connecting terminal of the wire is inserted into the insertion space 104 between the conductive voltage block 103 and the conductor 102, and the connecting hole 1121 of the connecting terminal is aligned with the crimping hole of the conductive voltage block 103. At the same time, the fastener is sequentially inserted into the crimping hole of the conductive voltage block 103 and the connecting hole 1121 of the connecting terminal, so that the connection and fixation of the connecting terminal of the wire and the wiring terminal can be achieved.

[0074] In other embodiments, the conductive block 103 and the conductor 102 are split structures, the fixing holes can be threaded holes, the crimping holes need to be connected to the fixing holes, the connecting holes 1121 of the connecting terminals of the wires are aligned with the fixing holes, and then the conductive block 103 is placed on the conductor 102, and the crimping holes of the conductive block 103 are aligned with the connecting holes 1121 of the connecting terminals, and at the same time, the fasteners are sequentially inserted into the crimping holes of the conductive block 103, the connecting holes 1121 of the connecting terminals and the fixing holes of the conductor 102, thereby realizing the connection and fixation of the connecting terminals of the wires and the wiring terminals.

[0075] In some embodiments, as Figure 5 and Figure 10 As shown, a first mounting hole 1031 is provided on the conductive block 103, and at least one of the wire entry holes 1141 is the first wire entry hole 1021. The compression hole 1142 corresponding to the first wire entry hole 1021 is the first compression hole 1024. The first compression hole 1024 is connected to the first mounting hole 1031, and both the first mounting hole 1031 and the first compression hole 1024 are connected to the connection hole 1121 of the connection terminal, thereby achieving the purpose of simultaneously connecting the connection terminal and the straight-through bare wire of the wire using a single fastener.

[0076] In some embodiments, as Figure 5 As shown, at least one of the wire entry holes 1141 is a second wire entry hole 1023, and the compression hole 1142 corresponding to the second wire entry hole 1023 is a second compression hole 1025. Furthermore, the first compression hole 1024 and the second compression hole 1025 are staggered on the same end face of the conductor 102. To prevent interference when two straight-through bare wires are simultaneously inserted into the first and second wire entry holes 1023, the second wire entry holes 1023 are staggered relative to the first wire entry holes 1021. The second compression hole 1025 can be a threaded hole that is threadedly engaged with a fastener for secure connection.

[0077] Further, if Figure 8 As shown, a second mounting hole 1032 is provided on the conductive block 103, corresponding to the second compression hole 1025. This allows a fastener to sequentially pass through the second mounting hole 1032 and the second compression hole 1025 into the second wire entry hole 1023, thereby compressing the wire in the second wire entry hole 1023. To prevent interference between the fasteners securing the wire in the first wire entry hole 1021 and the fasteners securing the wire in the second wire entry hole 1023, the first mounting hole 1031 and the second mounting hole 1032 are staggered, and the second mounting hole 1032 can be countersunk. When two straight-through bare wires are inserted simultaneously into the first and second wire entry holes 1021, 1023, the fastener used to compress the straight-through bare wires in the second wire entry hole 1023 can be a cylindrical head hexagon socket screw. This fastener is located within the countersunk hole of the conductive block 103, effectively preventing interference between the fasteners in the first and second mounting holes 1031, 1032.

[0078] Of course, the connecting terminal of the wire can also be inserted into the insertion space 104 corresponding to the second wire entry hole 1023. At the same time, the second mounting hole 1032, the insertion space 104 and the second clamping hole 1025 are connected in sequence, so that the fastener can fix the connecting terminal through the second mounting hole 1032, the connecting hole 1121 of the connecting terminal and the second clamping hole 1025.

[0079] In some embodiments, the two wires of any one of the connection ends 113 of the conductor 102 can also be connected simultaneously using a connection terminal and a wiring terminal. It is only necessary to insert the connection terminals of the two wires back to back into the insertion space 104 between the conductive voltage block 103 and the conductor 102, and then use fasteners to pass through the connection holes 1121 of the connection terminals of the two wires at the same time.

[0080] It should be noted that the number of first wire entry hole 1021 and second wire entry hole 1023 is not limited to one, and can also be two, three, or more, and can be flexibly selected according to actual scenario requirements. In addition, the terminal block is not limited to the above-mentioned application scenarios, but can also be applied to other scenarios. As long as the structural form of the terminal block disclosed in this application is adopted, it is within the scope of protection of this application.

[0081] In order to facilitate the installation of the conductive voltage block 103, in some embodiments, as shown in FIG. Figures 5 to 7 As shown, a notch 1022 is provided on the top surface of the conductor 102 so that the conductive block 103 is located in the notch 1022 to prevent the conductive block 103 and the fastener from protruding from the top surface of the conductor 102 .

[0082] In some embodiments, the housing 101 may be made of insulating materials such as plastic, ceramic, or rubber, and insulating paint may be applied to the inner and outer walls of the housing 101 to ensure insulation from the outside.

[0083] The housing 101 can be a split-piece structure or a one-piece injection-molded structure. In some embodiments, the housing 101 can be a split-piece structure. Furthermore, the housing 101 can include a first sub-shell 1011 and a second sub-shell 1012 with a predetermined angle γ, and the first sub-shell 1011 and the second sub-shell 1012 can be used to clamp and secure the side surfaces of the conductor 102. At least one first extension arm 1013 is provided at both ends of the first sub-shell 1011, and the first extension arm 1013 has a first connecting end connected to the first sub-shell 1011 and a first free end connected to the second sub-shell 1012, and a groove 1014 is provided at the first free end of the first extension arm 1013. At the same time, at least one second extension arm 1015 corresponding to the first extension arm 1013 of the first sub-shell 1011 is provided at both ends of the second sub-shell 1012, and the second extension arm 1015 has a second connecting end connected to the second sub-shell 1012 and a second free end connected to the first sub-shell 1011, and a protrusion 1016 is provided at the second free end of the second extension arm 1015 to cooperate with the groove 1014 provided at the first free end of the first extension arm 1013, so that the first sub-shell 1011 and the second sub-shell 1012 are positioned and fixed by concave-convex cooperation to form the shell 101.

[0084] Furthermore, preferably, the groove 1014 provided at the first free end of the first extension arm 1013 on the first sub-shell 1011 can be a C-shaped groove, and the protrusion 1016 provided at the second free end of the second extension arm 1015 on the second sub-shell 1012 can be a circular cross-section, with the diameter of the circular cross-section slightly larger than the opening width of the C-shaped groove, thereby preventing the protrusion 1016 from falling out of the groove 1014, thereby ensuring the secure connection between the first sub-shell 1011 and the second sub-shell 1012. Of course, the installation and positioning of the first sub-shell 1011 and the second sub-shell 1012 can also be achieved by the cooperation of the groove 1014 of the first extension arm 1013 of the first sub-shell 1011 and the protrusion 1016 of the second extension arm 1015 of the second sub-shell 1012, and the connection and fixation can be achieved by fasteners.

[0085] It should be noted that, in the above embodiment, in order to ensure the firmness of the connection between the first sub-shell 1011 and the second sub-shell 1012, two first extension arms 1013 are respectively provided at both ends of the first sub-shell 1011, and two second extension arms 1015 corresponding to the first extension arms 1013 are respectively provided at both ends of the second sub-shell 1012, so that the grooves 1014 of the two first extension arms 1013 provided at both ends of the first sub-shell 1011 are respectively connected and fixed with the protrusions 1016 of the two second extension arms 1015 provided at both ends of the second sub-shell 1012 through concave-convex matching, so as to form a four-point connection of the shell 101, thereby ensuring the firmness of the connection between the first sub-shell 1011 and the second sub-shell 1012. Of course, a protrusion 1016 may be provided on the first extension arm 1013 of the first partial shell 1011, and a groove 1014 may be provided on the second extension arm 1015 of the second partial shell 1012 to achieve a concave-convex fitting connection between the first partial shell 1011 and the second partial shell 1012, or other detachable connection methods may be used, which are not limited herein.

[0086] like Figures 1 to 4 As shown, in order to facilitate wiring, the housing 101 is provided with an opening 107 and a cover 108 movably arranged at the position of the opening 107, and the opening 107 is on the same side as the clamping hole. When the wire needs to be connected to the terminal, the cover 108 can be opened, and the fastener can be inserted from the clamping hole 1142 to the wire entry hole 1141 at the position of the opening 107 of the housing 101, thereby clamping the wire passed through the wire entry hole 1141.

[0087] In some embodiments, as Figure 1As shown, the opening 107 is provided through the shell 101, that is, the opening 107 extends from one end of the shell 101 to the other end, and at the same time, one end and the other end of the shell 101 correspond to the two connection ends 113 of the conductor 102 respectively. The cover 108 is adapted to the opening 107, that is, the cover 108 has the same preset angle γ as the shell 101. For ease of understanding, the two ends of the cover 108 are defined as the first end and the second end respectively. The first end of the cover 108 is hinged to the shell 101 at one end of the opening 107, and the hinge axis is parallel to the surface of the shell 101 where the opening 107 is located, so that the cover 108 can be flipped along the hinge position, and the second end of the cover 108 is detachably connected to the shell 101 at the other end of the opening 107 to facilitate the opening and closing of the cover 108.

[0088] In other embodiments, the first end of the cover 108 may also be hinged to the shell 101 at one end of the opening 107, and the hinge axis is perpendicular to the surface of the shell 101 where the opening 107 is located, that is, the rotation plane of the cover 108 is parallel to the surface of the shell 101 where the opening 107 is located, and at the same time, the second end of the cover 108 is detachably connected to the shell 101 at the other end of the opening 107.

[0089] Of course, the cover 108 and the housing 101 may also be opened and closed by sliding fit, which is not limited herein.

[0090] The second end of the cover plate 108 and the housing 101 at the other end of the opening 107 can be connected by magnetic connection, plug connection or snap connection.

[0091] In some embodiments, as Figure 1 As shown, the second end of the cover plate 108 is connected to the housing 101 at the other end of the opening 107 by a snap-fit connection. A hook 1081 is provided on the second end of the cover plate 108. A snap-fit groove 109 is provided on the housing 101 corresponding to the opening 107 and the second end of the cover plate 108. A stopper is provided within the snap-fit groove 109 to prevent the hook 1081 from disengaging. Once the connection of the terminal block is complete, simply snap the hook 1081 provided on the second end of the cover plate 108 into the snap-fit groove 109 provided on the housing 101, thereby closing the cover plate 108 and ensuring the safety and reliability of the terminal block. To facilitate opening of the cover plate 108, a guide surface is provided on the stopper that is inclined toward the bottom of the snap-fit groove 109. This allows the hook 1081 to disengage along the guide surface of the stopper when the cover plate 108 needs to be opened by simply moving the hook 1081 on the second end of the cover plate 108 toward the outside of the snap-fit groove 109. It should be noted that the hooks 1081 are continuously arranged at the second end of the cover plate 108 along the width direction of the cover plate 108, and the first and second sub-shells 1011 and 1012 are respectively provided with snap-fitting grooves 109 for snapping with the hooks 1081 to ensure the firmness of the connection between the cover plate 108 and the shell 101.

[0092] Furthermore, to facilitate installation and fixation of the terminal block, a fixing hole 110 is provided on the terminal body 100 for easy installation, so that the terminal block can be fixed to the installation position through the fixing hole 110. Of course, a guide rail slot 111 can also be provided on the terminal body 100, so that the terminal block can slide and cooperate with the guide rail of the installation position through the guide rail slot 111, thereby achieving the installation and positioning of the terminal block.

[0093] In some embodiments, there are two fixing holes 110, which are respectively provided at both ends of the terminal body 100 and are located in the cavity of the shell 101. During installation, the terminal block can be connected and fixed by fasteners after the fixing holes 110 correspond to the mounting holes in the grid box 200. Of course, a guide rail slot 111 can also be provided on the terminal body 100, so that the terminal block can slide with the guide rail in the grid box 200 through the guide rail slot 111, thereby realizing the installation and positioning of the terminal block. It should be noted that the terminal block can also adopt other fixing methods, such as magnetic fixation, snap fixation, etc., which are not limited in this article.

[0094] like Figure 14 As shown, the embodiment of the present application also discloses a grid-connected box 200, including multiple wiring terminals. The wiring terminals are the wiring terminals disclosed in the above embodiment, and therefore have all the technical effects of the above wiring terminals, which will not be repeated here.

[0095] In some embodiments, as Figure 13 and Figure 14 As shown, the various connection terminals can be installed in close proximity to each other, reducing the space occupied within the grid connection box 200, thereby reducing the volume of the grid connection box 200, making it easier for workers to carry and transport, making transportation and on-site installation more convenient and efficient, and reducing the cost of the grid connection box 200. At the same time, because the housing 101 and the conductor 102 of the terminal body 100 both have a preset angle, when the various connection terminals are installed in close proximity to each other, the connection terminals are staggered, that is, one of two adjacent connection terminals is located within the preset angle of the other, thereby increasing the electrical clearance and creepage distance, improving safety and reliability.

[0096] like Figure 13 As shown, to prevent the live wire and neutral wire from being misconnected, the diameter of the port 114 can be changed. The terminal block includes a first terminal 201 connected to the live wire and a second terminal 202 connected to the neutral wire. The diameter of the port 114 of the first terminal 201 is larger than the diameter of the port 114 of the second terminal 202. Since the diameter of the live wire is larger than the diameter of the neutral wire, the live wire cannot pass through the port 114 of the second terminal 202 connected to the neutral wire, thereby preventing misconnection.

[0097] In some embodiments, misconnection of the live and neutral wires can be avoided by changing the diameter of the wire entry hole 1141. The wiring terminals include a first wiring terminal 201 for connecting the live wire and a second wiring terminal 202 for connecting the neutral wire. The diameter of the wire entry hole 1141 of the first wiring terminal 201 is larger than the diameter of the wire entry hole 1141 of the second wiring terminal 202. Because the diameter of the live wire is larger than the diameter of the neutral wire, the live wire cannot pass through the wire entry hole 1141 of the second wiring terminal 202 for connecting the neutral wire, thereby preventing misconnection.

[0098] The embodiment of the present application further discloses a photovoltaic power station, including a grid-connected box. The grid-connected box is the grid-connected box 200 disclosed in the above embodiment, and therefore has all the technical effects of the above grid-connected box 200, which will not be repeated herein.

[0099] The terms "first," "second," and so on in the specification, claims, and drawings of this application are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements and may include steps or elements that are not listed.

[0100] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A terminal block, characterized in that: include: A terminal body (100) is provided, wherein the terminal body (100) comprises a shell (101) and a conductor (102) located in the shell (101), the conductor (102) having two connection ends (113) arranged at a preset angle, each connection end (113) being provided with a port (114) for connecting a wire, the shell (101) comprising a first section (1017) and a second section (1018) arranged at the preset angle, and the first section (1017) and the second section (1018) of the shell (101) respectively correspond to the two connection ends (113) of the conductor (102).

2. The terminal block according to claim 1, wherein: The port (114) includes: a wire entry hole (1141) provided on the conductor (102), the wire entry hole (1141) being used for inserting a wire; A clamping hole (1142) is provided on the conductor (102), the axes of the wire entry hole (1141) and the clamping hole (1142) intersect, the clamping hole (1142) is used to be fixedly matched with a fastener, and the clamping hole (1142) and the wire entry hole (1141) are communicated so that the fastener clamps the wire in the wire entry hole (1141).

3. The terminal block according to claim 2, wherein: At least one of the connection ends (113) has at least two wire entry holes (1141), and the number of the pressing holes (1142) matches the number of the wire entry holes (1141).

4. The connecting terminal according to claim 2 or 3, characterized in that: At least one of the connection ends (113) comprises a plug-in space (104), and the plug-in space (104) is used for plugging in a connection terminal of a wire; A conductive voltage block (103) is provided on the conductor (102), and the insertion space (104) is formed between the conductive voltage block (103) and the conductor (102).

5. The connection terminal according to claim 4, characterized in that: The conductive voltage block (103) is provided with a first mounting hole (1031); At least one of the wire entry holes (1141) is a first wire entry hole (1021), the pressing hole (1142) corresponding to the first wire entry hole (1021) is a first pressing hole (1024), the first pressing hole (1024) is connected to the first mounting hole (1031), and the connecting terminal has a connecting hole (1121); The first mounting hole (1031) and the first pressing hole (1024) are both used to communicate with the connecting hole (1121) of the connecting terminal, so that the fastener can fix the connecting terminal through the first mounting hole (1031), the connecting hole (1121) and the first pressing hole (1024).

6. The connection terminal according to claim 5, characterized in that: At least one of the wire entry holes (1141) is a second wire entry hole (1023), the clamping hole (1142) corresponding to the second wire entry hole (1023) is a second clamping hole (1025), and the second clamping hole (1025) and the first clamping hole (1024) are staggered and distributed on the same end surface of the conductor (102).

7. The connection terminal according to claim 6, characterized in that: The conductive voltage block (103) is further provided with a second mounting hole (1032), and the second mounting hole (1032), the plug-in space (104) and the second pressing hole (1025) are sequentially connected, so that the fastener can fix the connecting terminal through the second mounting hole (1032), the connecting hole (1121) and the second pressing hole (1025).

8. The connection terminal according to claim 4, characterized in that: The conductor (102) is provided with a notch (1022) for installing the conductive voltage block (103).

9. The connection terminal according to claim 1, characterized in that: The housing (101) comprises an opening (107) and a cover plate (108) movably arranged at the position of the opening (107).

10. The connection terminal according to claim 9, characterized in that: The opening (107) extends from one end of the shell (101) to the other end, and one end and the other end of the shell (101) correspond to the two connecting ends (113) respectively; The cover plate (108) has a first end and a second end that are arranged opposite to each other. The first end of the cover plate (108) is hinged to the housing (101), and the second end of the cover plate (108) is detachably connected to the housing (101).

11. The connection terminal according to claim 1, characterized in that: The terminal body (100) is provided with a fixing hole (110), and the wiring terminal is fixed to the installation position through the fixing hole (110); and / or, A guide rail slot (111) is provided on the terminal body (100), and the guide rail slot (111) is used to cooperate with the guide rail of the installation position of the wiring terminal.

12. A grid-connected box, characterized in that: The invention comprises a plurality of connection terminals according to any one of claims 1 to 11; one of two adjacent connection terminals is located within the preset angle of the other.

13. The grid-connected box according to claim 12, characterized in that: The wiring terminal comprises a first wiring terminal (201) for connecting a live wire and a second wiring terminal (202) for connecting a neutral wire, wherein the diameter of the port (114) of the first wiring terminal (201) is larger than the diameter of the port (114) of the second wiring terminal (202).

14. A photovoltaic power station, characterized in that: It comprises the grid connection box (200) as claimed in claim 12 or 13.

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