Wireless monitoring device for photovoltaic combiner box

Abstract

The utility model relates to the field of photovoltaic combiner box monitoring, in particular to a photovoltaic combiner box wireless monitoring device, which comprises a base, and a shell is mounted at the top of the base; the mounting mechanism is mounted at the top of the base and can limit a line of the monitoring device; when a line is locked, the line penetrates through the line hole in advance and is wound into the clamping groove, so that the line is located between the clamping groove and the base, after line connection is completed, a worker presses the pressing plate, the fixing clamp descends in the sliding hole, the line is clamped, and meanwhile, the line is locked through the clamping groove. The fixing clamp and the pressing plate are fixed through clamping connection between the limiting teeth and the clamping teeth, the line can be locked after being connected, and the situation that monitoring of the photovoltaic combiner box is affected due to the fact that the connection position is loosened when the line is pulled is avoided.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic combiner box monitoring, in particular to a photovoltaic combiner box wireless monitoring device. Background Art

[0002] In photovoltaic power plant applications, the power generated by 8-16 photovoltaic strings is typically fed into a photovoltaic combiner box, where it is combined and output via copper busbars. As the name suggests, a photovoltaic combiner box monitoring device is installed inside the photovoltaic combiner box. Its primary function is to measure the generated current and voltage of each photovoltaic string and upload the relevant data to the monitoring room via a communication bus.

[0003] At present, the shell assembly of traditional wireless monitoring devices is complicated, which is not convenient for installation and disassembly. Moreover, the connection between many lines and monitoring devices appears messy and the wiring is easy to loosen when pulled. After searching, there is a wireless monitoring device for photovoltaic combiner boxes with the authorization announcement number: CN210201788U. Although the device has the advantages of convenient installation and disassembly between the shell and the base and easy assembly, the device has a fixing clamp and a bayonet to limit the line. Since the fixing clamp and the base are fixed in design, the line cannot be locked when limited, and the line will become loose when pulled.

[0004] Therefore, a photovoltaic combiner box wireless monitoring device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a wireless monitoring device for photovoltaic combiner boxes in order to solve the above problems, thereby improving the problem that the line cannot be locked when the line is limited due to the fixed design of the fixing clamp and the base, and the line will become loose when it is pulled.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a wireless monitoring device for a photovoltaic junction box, comprising: a base, a shell installed on the top of the base; a mounting mechanism, the mounting mechanism is installed on the top of the base and can limit the line of the monitoring device; wherein, the mounting mechanism includes a line mounting piece installed through the front and rear sides of the top of the base, mounting components are installed on both sides of the top of the base, the line mounting piece includes two pressing plates arranged on the front and rear sides of the top of the base, a plurality of fixing clips are fixedly installed on the bottom of the pressing plate, a wire hole is opened on the top of the fixing clip surface, a card slot is opened on the bottom of the fixing clip surface, a plurality of sliding holes are opened on the front and rear sides of the top of the base, and the bottom end of the fixing clip passes through the sliding hole and extends to the bottom of the base.

[0007] Preferably, latch teeth are provided on both sides of the inner wall of the latch groove, and a limiting tooth is fixedly installed on one side of the inner cavity of the sliding hole, and the latch teeth are engaged with the limiting tooth.

[0008] Preferably, the installation component includes two vertical plates fixedly installed on both sides of the top of the base. The vertical plates are installed on both sides of the outer shell. An installation cavity is jointly formed between the two vertical plates. U-shaped buckles are fixedly installed at the bottoms of both sides of the outer shell. A clamping block is fixedly installed on the side of the U-shaped buckle away from the outer shell. A limiting groove is formed at the top of one side of the vertical plate. The clamping block is clamped with the limiting groove.

[0009] Preferably, an elastic pad is fixedly installed at the bottom between the two vertical plates. The top of the elastic pad is in contact with the bottom of the outer shell and the U-shaped buckle. The elastic pad is made of a rubber component.

[0010] Preferably, a plurality of heat dissipation fins are fixedly installed on the inner wall of the outer shell, and heat dissipation holes are formed on both sides of the outer shell.

[0011] Preferably, bolts are installed through the four sides of the top of the base, and the base is installed inside the photovoltaic busbar box through the bolts.

[0012] Preferably, the shape of the clamping groove is "U-shaped", and the clamping groove is slidably connected with the sliding hole.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. When locking the circuit, the circuit is pre-passed through the wire hole and wound into the inside of the clamping groove, so that the circuit is located between the clamping groove and the base. After the circuit connection is completed, the staff presses the pressing plate, so that the fixing clip descends inside the sliding hole to clamp the circuit. At the same time, the fixing clip and the pressing plate are fixed by the clamping between the limiting teeth and the clamping teeth, which can lock the circuit after the circuit connection is completed, avoid the loosening of the connection when the circuit is pulled, and affect the monitoring of the photovoltaic busbar box;

[0015] 2. When connecting the base and the outer shell, the outer shell and the U-shaped buckles on both sides are clamped into the inside of the installation cavity. When the U-shaped buckles enter the inside of the installation cavity, the clamping blocks are automatically clamped into the inside of the limiting grooves for limiting. If disassembly is required, the staff presses one side of the U-shaped buckle to separate the clamping block from the limiting groove, which facilitates the disassembly and assembly of the base and the outer shell, improves the production efficiency while facilitating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the circuit installation part of the present utility model;

[0018] Figure 3 is Figure 2 an enlarged view of area A in

[0019] Figure 4 This is a schematic structural diagram of the installation component of the present utility model.

[0020] In the figure: 10, base; 11, outer shell; 12, heat sink; 13, heat dissipation holes; 20, installation mechanism; 21, circuit installation member; 211, pressing plate; 212, fixing clip; 213, wire hole; 214, card slot; 215, sliding hole; 216, card teeth; 217, limiting teeth; 22, installation component; 221, vertical plate; 222, installation cavity; 223, U-shaped buckle; 224, card block; 225, limiting slot; 226, elastic pad. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] During specific implementation: As Figures 1-4 shown, a wireless monitoring device for a photovoltaic busbar box includes: a base 10, on the top of which an outer shell 11 is installed; an installation mechanism 20, which is installed on the top of the base 10 and can limit the circuits of the monitoring device; a plurality of heat sinks 12 are fixedly installed on the inner wall of the outer shell 11, and heat dissipation holes 13 are opened on both sides of the outer shell 11; bolts are installed through the four sides of the top of the base 10, and the base 10 is installed inside the photovoltaic busbar box through the bolts.

[0023] As Figure 1 , Figure 2 and Figure 3 shown, the installation mechanism 20 includes a circuit installation member 21 installed through the front and rear sides of the top of the base 10, and installation components 22 are installed on both sides of the top of the base 10. The circuit installation member 21 includes two pressing plates 211 arranged on the front and rear sides of the top of the base 10. A plurality of fixing clips 212 are fixedly installed at the bottom of the pressing plate 211. A wire hole 213 is opened at the top of the surface of the fixing clip 212, and a card slot 214 is opened at the bottom of the surface of the fixing clip 212. A plurality of sliding holes 215 are opened on the front and rear sides of the top of the base 10. The bottom end of the fixing clip 212 passes through the sliding hole 215 and extends to the bottom of the base 10; card teeth 216 are opened on both sides of the inner wall of the card slot 214, and a limiting tooth 217 is fixedly installed on one side of the inner cavity of the sliding hole 215, and the card teeth 216 are engaged with the limiting tooth 217;

[0024] In this embodiment, the circuit is pre-passed through the wire hole 213, and the circuit is wound into the inside of the card slot 214, so that the circuit is located between the card slot 214 and the base 10. After the circuit connection is completed, the staff presses the pressing plate 211, so that the fixing clip 212 descends inside the sliding hole 215 to clamp the circuit. At the same time, the fixing clip 212 and the pressing plate 211 are fixed by the clamping between the limiting teeth 217 and the engaging teeth 216;

[0025] In this embodiment, the shape of the card slot 214 is "U-shaped", and the card slot 214 and the sliding hole 215 are slidably connected; it is convenient to clamp the circuit according to the shape of the circuit to avoid the circuit from shaking when being locked.

[0026] As Figure 1 and Figure 4 As shown in the figure, the installation component 22 includes two vertical plates 221 fixedly installed on both sides of the top of the base 10. The vertical plates 221 are installed on both sides of the outer shell 11. An installation cavity 222 is formed between the two vertical plates 221. U-shaped buckles 223 are fixedly installed at the bottoms of both sides of the outer shell 11. A clamping block 224 is fixedly installed on the side of the U-shaped buckle 223 away from the outer shell 11. A limiting groove 225 is opened at the top of one side of the vertical plate 221, and the clamping block 224 is clamped with the limiting groove 225;

[0027] In this embodiment, the outer shell 11 and the U-shaped buckles 223 on both sides thereof are snapped into the inside of the installation cavity 222. When the U-shaped buckles 223 enter the inside of the installation cavity 222, the clamping blocks 224 are automatically snapped into the inside of the limiting grooves 225 for limiting. When disassembly is required, the staff presses one side of the U-shaped buckle 223 to separate the clamping block 224 from the limiting groove 225;

[0028] In this embodiment, an elastic pad 226 is fixedly installed at the bottom between the two vertical plates 221. The top of the elastic pad 226 is in contact with the bottoms of the outer shell 11 and the U-shaped buckles 223. The material of the elastic pad 226 is a rubber component; it is convenient to tightly press the U-shaped buckles 223 and the outer shell 11 to avoid the clamping blocks 224 from shaking inside the limiting grooves 225.

[0029] When the utility model connects the base 10 and the housing 11, the housing 11 and the U-shaped buckles 223 on both sides thereof are snapped into the interior of the installation cavity 222. When the U-shaped buckles 223 enter the interior of the installation cavity 222, the clamping blocks 224 are automatically snapped into the interior of the limiting grooves 225 for limiting. When disassembly is required, the staff presses one side of the U-shaped buckle 223 to separate the clamping block 224 from the limiting groove 225. When connecting the circuit, the circuit is pre-passed through the wire hole 213, and the circuit is wound into the interior of the card slot 214, so that the circuit is located between the card slot 214 and the base 10. After the circuit connection is completed, the staff presses the pressing plate 211, so that the fixing clip 212 descends in the sliding hole 215 to clamp the circuit. At the same time, the fixing clip 212 and the pressing plate 211 are fixed by the clamping connection between the limiting teeth 217 and the clamping teeth 216.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wireless monitoring device for a photovoltaic busbar box, characterized in that, Comprising: A base (10), on the top of which a housing (11) is mounted; A mounting mechanism (20), which is mounted on the top of the base (10) and can limit the wires of the monitoring device; Among them, the mounting mechanism (20) includes wire mounting members (21) penetrating through the front and rear sides of the top of the base (10). On both sides of the top of the base (10), mounting components (22) are mounted. The wire mounting member (21) includes two pressing plates (211) arranged on the front and rear sides of the top of the base (10). A plurality of fixing clips (212) are fixedly installed at the bottom of the pressing plate (211). A wire hole (213) is opened at the top of the surface of the fixing clip (212), and a card slot (214) is opened at the bottom of the surface of the fixing clip (212). A plurality of sliding holes (215) are opened on both the front and rear sides of the top of the base (10). The bottom end of the fixing clip (212) penetrates through the sliding hole (215) and extends to the bottom of the base (10).

2. The wireless monitoring device for a photovoltaic busbar box according to claim 1, wherein: On both sides of the inner wall of the card slot (214), card teeth (216) are opened. On one side of the inner cavity of the sliding hole (215), a limiting tooth (217) is fixedly installed. The card teeth (216) are engaged with the limiting tooth (217).

3. The wireless monitoring device for a photovoltaic busbar box according to claim 1, wherein: The mounting component (22) includes two groups of vertical plates (221) fixedly installed on both sides of the top of the base (10). The vertical plates (221) are installed on both sides of the housing (11). An installation cavity (222) is jointly formed between the two vertical plates (221). U-shaped buckles (223) are fixedly installed at the bottoms of both sides of the housing (11). A card block (224) is fixedly installed on the side of the U-shaped buckle (223) away from the housing (11). A limiting slot (225) is opened at the top of one side of the vertical plate (221). The card block (224) is engaged with the limiting slot (225).

4. The wireless monitoring device for a photovoltaic busbar box according to claim 3, wherein: At the bottom between the two vertical plates (221), an elastic pad (226) is fixedly installed. The top of the elastic pad (226) is in contact with the bottom of the housing (11) and the U-shaped buckle (223). The elastic pad (226) is made of a rubber member.

5. The wireless monitoring device for a photovoltaic busbar box according to claim 1, characterized in that: A plurality of heat dissipation fins (12) are fixedly installed on the inner wall of the housing (11). Heat dissipation holes (13) are opened on both sides of the housing (11).

6. The wireless monitoring device for a photovoltaic busbar box according to claim 1, characterized in that: Bolts are penetrated and installed around the top of the base (10). The base (10) is installed inside the photovoltaic busbar box through the bolts.

7. The wireless monitoring device for a photovoltaic busbar box according to claim 1, characterized in that: The shape of the card slot (214) is "U-shaped", and the card slot (214) is slidably connected to the sliding hole (215).

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