Photovoltaic anchoring intermediate terminal

Abstract

The utility model discloses a photovoltaic anchoring intermediate terminal, which relates to the technical field of cable connection and comprises a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece are the same in structure, one end of the first connecting piece and one end of the second connecting piece are each provided with a protruding tenon and a concave mortise, the tenon of the first connecting piece is in butt joint with the mortise of the second connecting piece, and the tenon of the second connecting piece is in butt joint with the mortise of the first connecting piece; grooves are formed in the side walls, making contact with each other, of the first connecting piece and the second connecting piece, and a plug pin is inserted into the two grooves to form a connecting hole so that the first connecting piece and the second connecting piece can be connected in a locked mode. A cable and a transmission cable of the photovoltaic combiner box are respectively connected with the other ends of the first connecting piece and the second connecting piece, and the first connecting piece and the second connecting piece are connected by utilizing a mortise and tenon joint principle, so that the cable cannot be loosened, the tension resistance and the firmness stability are met, and poor insulation caused by breakage can be avoided after the photovoltaic combiner box is used for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable connection technical field, especially a photovoltaic anchoring intermediate terminal. BACKGROUND

[0002] The photovoltaic combiner box (also called as combiner) is mainly used for gathering the output current of multiple photovoltaic modules, and transmits these currents to the inverter or other power management system through a small number of cables, and it is usually located near the photovoltaic array and installed close to the ground.

[0003] In the prior art, when the photovoltaic combiner box is transmitted through cable connection, it is connected through the MC4 plug, and the shell of the MC4 plug is usually made of plastic, which becomes brittle at low temperature or after long-term use, and is prone to breakage, resulting in poor insulation. UTILITY MODEL CONTENT

[0004] In order to solve the problems in the prior art, the utility model provides a photovoltaic anchoring intermediate terminal, which comprises: a first connecting piece and a second connecting piece.

[0005] The first connecting piece and the second connecting piece are the same in structure, and one end of the first connecting piece and the second connecting piece is provided with a protruding tenon and a recessed mortise, the tenon of the first connecting piece is butted with the mortise of the second connecting piece, and the tenon of the second connecting piece is butted with the mortise of the first connecting piece.

[0006] The side wall of the first connecting piece and the second connecting piece in contact is provided with a groove, and the latch is inserted into the two grooves to form a connecting hole, so as to lock the first connecting piece and the second connecting piece.

[0007] The cable of the photovoltaic combiner box and the transmission cable are connected to the other end of the first connecting piece and the second connecting piece respectively.

[0008] Further, the other end of the first connecting piece and the second connecting piece is provided with a crimping groove, and the end of the cable of the photovoltaic combiner box and the end of the transmission cable are respectively crimped in the crimping groove of the first connecting piece and the second connecting piece.

[0009] Further, the other end of the first connecting piece and the second connecting piece is provided with a connecting channel communicated with the groove, and the end of the cable of the photovoltaic combiner box and the end of the transmission cable respectively pass through the connecting channel of the first connecting piece and the connecting channel of the second connecting piece, and enter the connecting hole, and the latch is inserted into the connecting hole to fix the end of the cable of the photovoltaic combiner box and the transmission cable.

[0010] Further, after the first connecting piece and the second connecting piece are locked into a whole, a thermoplastic sleeve is applied outside.

[0011] Further, the first connecting piece and the second connecting piece are copper connecting pieces, and the plug pin is a copper plug pin.

[0012] The beneficial effects of the technical scheme provided by the utility model are that the first connecting piece and the second connecting piece are connected with the cable and the buried cable of the photovoltaic combiner box respectively, the first connecting piece and the second connecting piece are connected by the mortise and tenon principle, the cable cannot be loosened, the tensile strength and the firm stability are met, the cable operation life is met, and the cable cannot be caused to be poorly insulated due to breakage under long-time use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is an explosion view of the photovoltaic anchoring intermediate terminal provided by the utility model;

[0014] Figure 2 is a sectional view of the photovoltaic anchoring intermediate terminal provided by the utility model;

[0015] Figure 3 is an explosion view of another photovoltaic anchoring intermediate terminal provided by the utility model;

[0016] Figure 4 is a sectional view of another photovoltaic anchoring intermediate terminal provided by the utility model;

[0017] Figure 5 is a sectional view of the first connecting piece provided by the utility model;

[0018] Figure 6 is a sectional view of another first connecting piece provided by the utility model;

[0019] Figure 7 is a sectional view of the second connecting piece provided by the utility model;

[0020] Figure 8 is a sectional view of another second connecting piece provided by the utility model;

[0021] Figure 9 is a structural view of the photovoltaic anchoring intermediate terminal provided by the utility model.

[0022] The drawing label: 1-first connecting piece;2-second connecting piece;3-groove;4-plug pin;5-pressing groove;6-connection channel;7-first tenon;8-second tenon;9-first mortise;10-second mortise;11-third tenon;12-fourth tenon;13-third mortise;14-fourth mortise. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0024] In order to make the purpose, technical solutions and advantages of the utility model more clear, the utility model embodiment will be further described in detail below with reference to the drawings.

[0025] It should be noted that, in the present embodiment, the positions or relationships indicated by "bottom", "top", "left", "right" and the like are based on the positions or relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0026] It should be further noted that, in the present embodiment, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment one

[0028] Referring to Figure 1 , Figure 2 , Figure 5 and Figure 7 , a photovoltaic anchoring intermediate terminal comprises: a first connecting piece 1 and a second connecting piece 2, the first connecting piece 1 and the second connecting piece 2 are the same in structure, one end of the first connecting piece 1 is connected with a first tenon 7 and a second tenon 8, the second tenon 8 is longer than the first tenon 7, a first mortise 9 is formed between the first tenon 7 and the second tenon 8, an end of the second tenon 8 is provided with a second mortise 10, one end of the second connecting piece 2 is connected with a third tenon 11 and a fourth tenon 12, the fourth tenon 12 is longer than the third tenon 11, a third mortise 13 is formed between the third tenon 11 and the fourth tenon 12, an end of the fourth tenon 12 is provided with a fourth mortise 14.

[0029] When the first connecting piece 1 and the second connecting piece 2 are connected, the first tenon 7 of the first connecting piece 1 is butted against the fourth mortise 14 of the second connecting piece 2, the first mortise 9 of the first connecting piece 1 is butted against the fourth tenon 12 of the second connecting piece 2, the second tenon 8 of the first connecting piece 1 is butted against the third mortise 13 of the second connecting piece 2, and the second mortise 10 of the first connecting piece 1 is butted against the third tenon 11 of the second connecting piece 2; and a groove 3 is formed in the side wall of the second tenon 8 of the first connecting piece 1 and the fourth tenon 12 of the second connecting piece 2, which are in contact with each other. When the first connecting piece 1 and the second connecting piece 2 are butted against each other, the two grooves 3 are in a corresponding position and together form a rectangular connecting hole. The bolt 4 is a rectangular bolt matched with the connecting hole. After the bolt 4 is inserted into the connecting hole formed by the two grooves 3, the first connecting piece 1 and the second connecting piece 2 are locked.

[0030] The other end of the first connecting piece 1 and the second connecting piece 2 is provided with a crimping groove 5, which is designed to be suitable for the cross-sectional area of the cable. After the end of the cable of the photovoltaic combiner is stripped of the insulation layer by wire strippers, it is inserted into the crimping groove 5 of the first connecting piece 1 and is crimped by a crimping pliers. After the end of the buried cable connected with the photovoltaic combiner is stripped of the insulation layer by wire strippers, it is inserted into the crimping groove 5 of the second connecting piece 2 and is crimped by a crimping pliers. After being connected into one body, the whole is externally insulated by a thermoplastic sleeve. The first connecting piece 1, the second connecting piece 2 and the bolt 4 are all made of pure copper.

[0031] Embodiment Two

[0032] Referring to Figure 3 , Figure 4 , Figure 6 and Figure 8 , a photovoltaic anchoring intermediate wire end comprises a first connecting piece 1 and a second connecting piece 2. In this embodiment, the structure and material of the first connecting piece 1 and the second connecting piece 2 are the same as those of the first connecting piece 1 and the second connecting piece 2 in Embodiment One.

[0033] In this embodiment, the connection mode of the cable of the photovoltaic combiner and the buried cable with the first connecting piece 1 and the second connecting piece 2 is different. The other end of the first connecting piece 1 and the second connecting piece 2 is provided with a connecting channel 6 in communication with the groove 3. The connecting channel 6 can be arc-shaped, with one end located at the end of the first connecting piece 1 or the second connecting piece 2 and the other end located at the groove 3 of the first connecting piece 1 or the second connecting piece 2. After the end of the cable of the photovoltaic combiner is stripped of the insulation layer by wire strippers, it is inserted into the groove 3 through the connecting channel 6 of the first connecting piece 1. After the end of the buried cable is stripped of the insulation layer by wire strippers, it is inserted into the groove 3 through the connecting channel 6 of the second connecting piece 2. After the ends of the two cables are inserted into the connecting hole formed by the groove 3, the bolt 4 is hammered into the connecting hole to lock the first connecting piece 1 and the second connecting piece 2 and fix the two cables at the same time. After being connected into one body, the whole is externally insulated by a thermoplastic sleeve.

[0034] In addition, the connecting channels 6 of the first connecting piece 1 and the second connecting piece 2 can be two, and are communicated with the grooves 3, when connecting, the core of the cable can be bifurcated into two, respectively passes through two connecting channels 6 into the connecting hole formed by the grooves 3, and then is inserted into the connecting hole through the bolt 4 to be fixed.

[0035] Embodiment three

[0036] The structure and material of the first connecting piece 1 and the second connecting piece 2 in the embodiment are same as the structure and material of the first connecting piece 1 and the second connecting piece 2 in the embodiment one.

[0037] The connecting mode of the cable and the buried cable of the photovoltaic combiner box with the first connecting piece 1 and the second connecting piece 2 is different in the embodiment, the end of the first connecting piece 1 or the second connecting piece 2 can be integrally formed with the end of the photovoltaic combiner box cable or the buried cable.

[0038] It is worth mentioning that the photovoltaic anchoring intermediate terminal utilizes the mortise and tenon principle, combines the traditional building structure and the power cable, ensures that the cable cannot be loosened, meets the tension resistance and firm stability, and meets the cable operation life.

[0039] Secondly, the hot shrink sleeve process is matched to avoid the overhead grounding risk caused by the aging of the MC4 plug, and the photovoltaic anchoring intermediate terminal will not cause poor insulation due to fracture under long-time use.

[0040] In addition, the photovoltaic anchoring intermediate terminal can also avoid the situation that the buried cable is good but insufficient, and according to the management of 5 cable reservation deficiencies of each combiner box, 3000 combiner boxes are configured, each according to 10m buried cable, and about 30000m of cable is saved.

[0041] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A photovoltaic anchoring intermediate terminal, characterized in that, The utility model relates to a photovoltaic combiner box cable and transmission cable connecting structure, including: First connecting piece (1) and second connecting piece (2); The first connecting piece (1) and the second connecting piece (2) are same in structure, and one end of the first connecting piece (1) and the second connecting piece (2) is provided with a convex tenon and a recessed mortise, the tenon of the first connecting piece (1) is butted with the mortise of the second connecting piece (2), and the tenon of the second connecting piece (2) is butted with the mortise of the first connecting piece (1); The side wall of the first connecting piece (1) and the second connecting piece (2) that contact each other is provided with a recess (3), and a bolt (4) is inserted into two recesses (3) to form a connecting hole, so as to lock the first connecting piece (1) and the second connecting piece (2). The cable and transmission cable of the photovoltaic combiner box are connected with the other end of the first connecting piece (1) and the second connecting piece (2) respectively.

2. The photovoltaic anchor intermediate junction according to claim 1, wherein, The other end of the first connecting piece (1) and the second connecting piece (2) is provided with a crimping groove (5), and the end of the cable and the end of the transmission cable of the photovoltaic combiner box are respectively crimped in the crimping groove (5) of the first connecting piece (1) and the second connecting piece (2).

3. The photovoltaic anchor intermediate junction according to claim 1, wherein, The other end of the first connecting piece (1) and the second connecting piece (2) is provided with a connecting channel (6) in communication with the recess (3), and the end of the cable and the end of the transmission cable of the photovoltaic combiner box respectively pass through the connecting channel (6) of the first connecting piece (1) and the connecting channel (6) of the second connecting piece (2) and enter the connecting hole, and the bolt (4) is inserted into the connecting hole to fix the end of the cable and the end of the transmission cable of the photovoltaic combiner box.

4. Photovoltaic anchor intermediate junction according to any of claims 1 to 3, characterized in that After the first connecting piece (1) and the second connecting piece (2) are locked into a whole, a thermoplastic sleeve is applied outside.

5. The photovoltaic anchor intermediate junction according to claim 4, wherein, The first connecting piece (1) and the second connecting piece (2) are copper connecting pieces, and the bolt (4) is a copper bolt.

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