Parallel-charging and serial-use type photovoltaic conversion controller

Abstract

The utility model discloses a parallel-charging serial-use type photovoltaic conversion controller, which comprises a controller body and a sealing assembly arranged on the controller body and used for sealing a connecting wire, and the sealing assembly comprises a plurality of groups of hollow rings which are arranged on one side of the controller body close to a wiring hole and are symmetrically arranged in pairs. The opposite sides of the hollow rings are connected with the controller body through a plurality of connecting rods, and a sealing ring is arranged between every two opposite hollow rings. According to the utility model, through the arrangement of the sealing assembly, under the driving action of the driving assembly, the sealing ring is expanded by air, and the expanded sealing ring abuts against the side wall of the wire, so that the connection sealing performance between the wiring hole and the wires with different diameters is ensured, and the wires with different diameters can pass through the wiring hole conveniently; therefore, the convenience of connection of wires with different diameters is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic conversion controllers, in particular to a parallel-charging and serial-using photovoltaic conversion controller. Background Art

[0002] The parallel charging and serial use photovoltaic conversion controller combines the characteristics of parallel charging and serial use. In the photovoltaic system, parallel charging can increase the charging current, thereby speeding up the charging speed, while serial use can increase the overall voltage output.

[0003] The lower end of the parallel-charging and serial-type photovoltaic conversion controller is provided with a plurality of wiring holes, which are respectively used to electrically connect to components such as photovoltaic arrays or batteries, and in order to prevent external dust and water vapor from entering the photovoltaic conversion controller through the wiring port, an annular rubber pad is installed at the wiring hole to seal the connecting wire and the wiring port. However, since the diameters of the wires connected to different electrical components of the photovoltaic conversion controller are different, when the wire diameter is large, it is easy to generate greater resistance with the annular rubber pad when the wire is inserted, thereby making it inconvenient for the wire to move in the wiring hole, and when the wire diameter is small, the annular rubber pad is not tight enough against the side wall of the wire, thereby reducing the connection sealing between the connection hole and the wire.

[0004] Therefore, a parallel-charging and serial-using photovoltaic conversion controller is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a parallel-charging and serial-use photovoltaic conversion controller to solve the problem that the annular rubber pad proposed in the above background technology is difficult to adapt to the sealing of wires with different diameters.

[0006] To achieve the above object, the utility model provides the following technical solutions: a parallel-charging and serial-use photovoltaic conversion controller, comprising a controller body and a mounting hole provided on the controller body, wherein a plurality of wiring terminals are provided in the mounting hole, a protective plate is connected to the mounting hole by four screws, a plurality of wiring holes are provided on one side of the controller body, each of the wiring holes is communicated with the mounting hole, and a sealing component is provided on the controller body for sealing the connecting wires;

[0007] The sealing assembly includes multiple groups of hollow rings symmetrically arranged in pairs on one side of the controller body close to the wiring hole, each of the hollow rings is concentrically arranged with the wiring hole, one of the two opposite hollow rings is located in the mounting hole, and the opposite side is connected to the controller body through multiple connecting rods, a sealing ring is provided between the two opposite hollow rings, and an injection assembly for injecting air into each sealing ring is provided on the controller body.

[0008] The hollow rings located on the same side are connected via a connecting pipe.

[0009] The gas injection assembly includes a fixing plate fixedly connected to one side of the controller body, the fixing plate is fixedly connected to a gas injection pipe on a side away from the controller body, the gas injection pipe is slidably connected to the gas injection plate, the gas injection pipe is provided with a driving assembly for driving the gas injection plate, the gas injection pipe is provided with a mounting pipe at one end close to the hollow ring, the other end of the mounting pipe is connected to the hollow ring, and the side wall of the gas injection pipe is fixedly connected to an air inlet pipe.

[0010] One-way valves are respectively arranged in the air intake pipe and the air injection pipe, and the conducting direction of the two one-way valves is from the air intake end of the air intake pipe to the installation pipe.

[0011] The side wall of the installation pipe is provided with an air release valve.

[0012] The driving assembly includes a T-rod slidably connected to the gas injection pipe, one end of the T-rod is connected to the gas injection plate, and a spring is sleeved on the side wall of the T-rod located inside the gas injection pipe. The two ends of the spring are respectively connected to the gas injection plate and the inner wall of the gas injection pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges the sealing component so that the sealing ring expands due to air under the driving action of the driving component. The expanded sealing ring will abut against the side wall of the wire, thereby ensuring the sealing of the connection between the wiring hole and wires of different diameters and facilitating the passage of wires of different diameters through the wiring hole, thereby improving the convenience of connecting wires of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the sealing assembly structure of the utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 101, controller body; 102, mounting hole; 103, wiring terminal; 104, protective plate; 105, wiring hole; 201, hollow ring; 202, connecting rod; 203, sealing ring; 204, connecting pipe; 301, fixing plate; 302, air injection pipe; 304, air injection plate; 305, air inlet pipe; 306, mounting pipe; 307, one-way valve; 308, air release valve; 401, T-bar; 402, spring. DETAILED DESCRIPTION

[0019] 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 in 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.

[0020] Example 1

[0021] See also Figure 1-Figure 3 , a parallel-charging and serial-use photovoltaic conversion controller shown in the figure includes a controller body 101 and a mounting hole 102 opened on the controller body 101, a plurality of wiring terminals 103 are arranged in the mounting hole 102, a protective plate 104 is connected to the mounting hole 102 by four screws, a plurality of wiring holes 105 are opened on one side of the controller body 101, each wiring hole 105 is arranged in communication with the mounting hole 102, and also includes a sealing component arranged on the controller body 101 for sealing the connecting wires;

[0022] The sealing component includes a plurality of groups of hollow rings 201 symmetrically arranged in pairs on one side of the controller body 101 close to the wiring hole 105, each hollow ring 201 is concentrically arranged with the wiring hole 105, one of the two opposite hollow rings 201 is located in the mounting hole 102, and the opposite side is connected to the controller body 101 through a plurality of connecting rods 202, a sealing ring 203 is arranged between the two opposite hollow rings 201, and the sealing ring 203 is made of rubber material, and an air injection component for injecting air into each sealing ring 203 is arranged on the controller body 101;

[0023] It should be noted here that: through the setting of the sealing component, under the driving action of the driving component, the sealing ring 203 is expanded by air, and the expanded sealing ring 203 will be against the side wall of the wire, thereby ensuring the sealing of the connection between the wiring hole 105 and wires of different diameters, while also facilitating the passage of wires of different diameters through the wiring hole 105, thereby improving the convenience of connecting wires of different diameters.

[0024] It is worth noting that: as a prior art, the specific structure and working principle of the parallel-charging and serial-using photovoltaic conversion controller have been mastered by people in this field, and will not be elaborated here.

[0025] See also Figure 2 and Figure 3 , the hollow rings 201 on the same side are connected by a connecting pipe 204;

[0026] It should be noted here that the connection pipe 204 is provided to facilitate the communication between the sealing rings 203 .

[0027] See also Figure 2 and Figure 3 The gas injection assembly shown in the figure includes a fixing plate 301 fixedly connected to one side of the controller body 101, a side of the fixing plate 301 away from the controller body 101 is fixedly connected to a gas injection pipe 302, the gas injection pipe 302 is slidably connected to a gas injection plate 304, the gas injection pipe 302 is provided with a driving assembly for driving the gas injection plate 304, an end of the gas injection pipe 302 close to the hollow ring 201 is provided with a mounting pipe 306, the other end of the mounting pipe 306 is connected to the hollow ring 201, and the side wall of the gas injection pipe 302 is fixedly connected to an air inlet pipe 305;

[0028] It should be noted here that: by providing the gas injection assembly, the sealing ring 203 can be easily expanded by gas.

[0029] See also Figure 2 and Figure 3 In the figure, a one-way valve 307 is provided in the air inlet pipe 305 and the air injection pipe 302, respectively. The conducting direction of the two one-way valves 307 is from the air inlet end of the air inlet pipe 305 to the installation pipe 306;

[0030] It should be noted here that the provision of the two one-way valves 307 and the limitation of the conduction direction facilitate the air suction and air injection operations.

[0031] See also Figure 2 and Figure 3 , the side wall of the mounting pipe 306 shown in the figure is provided with a relief valve 308;

[0032] It should be noted here that the provision of the air release valve 308 facilitates the air release of the sealing ring 203 .

[0033] Working principle: When the controller body 101 is electrically connected to components such as a photovoltaic array or a storage battery, the protective plate 104 is first removed, and then the wire is inserted from the wiring hole 105 into the mounting hole 102 and connected to the wiring terminal 103, thereby completing the electrical connection between the controller body 101 and components such as a photovoltaic array or a storage battery;

[0034] After the controller body 101 is electrically connected to the photovoltaic array or battery and other components, the driving assembly drives the gas injection plate 304 to slide back and forth in the gas injection pipe 302. When the gas injection plate 304 moves close to the mounting pipe 306, the gas in the gas injection pipe 302 is injected into the mounting pipe 306 under the pressure difference and the one-way blocking of the two one-way valves 307, and finally injected into the sealing ring 203 through the hollow ring 201. When the gas injection plate 304 moves away from the mounting pipe 306, the pressure difference and the one-way blocking of the two one-way valves 307 are Under the blocking effect, the outside gas is drawn into the gas injection pipe 302 from the air inlet pipe 305, so that during the reciprocating movement of the gas injection plate 304, the outside gas is continuously drawn into the gas injection pipe 302 and finally injected into the sealing ring 203, so that the sealing ring 203 is expanded by the gas. The expanded sealing ring 203 will be against the side wall of the wire, thereby ensuring the sealing of the connection between the wiring hole 105 and wires of different diameters, and also facilitating the passage of wires of different diameters through the wiring hole 105, thereby improving the convenience of connecting wires of different diameters.

[0035] Example 2

[0036] See also Figure 3 This embodiment further explains Example 1. The driving assembly shown in the figure includes a T-shaped rod 401 slidably connected to the gas injection pipe 302. One end of the T-shaped rod 401 is connected to the gas injection plate 304. The T-shaped rod 401 is located on the side wall of the gas injection pipe 302 and is sleeved with a spring 402. The two ends of the spring 402 are respectively connected to the gas injection plate 304 and the inner wall of the gas injection pipe 302.

[0037] It should be noted here that: when the T-bar 401 is pulled, when the T-bar 401 moves away from the gas injection tube 302, it will synchronously drive the gas injection plate 304 to slide in the gas injection tube 302. When the T-bar 401 is pulled to the appropriate position, the pulling of the T-bar 401 is released. At this time, under the elastic action of the spring 402, the gas injection plate 304 will be driven to slide in the opposite direction in the gas injection tube 302, so that in the process of reciprocating pulling of the T-bar 401, the gas injection plate 304 will be driven to slide reciprocatingly in the gas injection tube 302.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A parallel-charging and serial-use photovoltaic conversion controller, comprising: A controller body (101) and a mounting hole (102) provided on the controller body (101), wherein a plurality of wiring terminals (103) are provided in the mounting hole (102), a protective plate (104) is connected to the mounting hole (102) via four screws, and a plurality of wiring holes (105) are provided on one side of the controller body (101), and each of the wiring holes (105) is arranged in communication with the mounting hole (102); It is characterized by further comprising: A sealing component disposed on the controller body (101) for sealing the connecting wires; The sealing component comprises a plurality of groups of hollow rings (201) arranged symmetrically in pairs on one side of the controller body (101) close to the wiring hole (105); each of the hollow rings (201) is arranged concentrically with the wiring hole (105); one of the two opposite hollow rings (201) is located in the mounting hole (102), and the opposite side is connected to the controller body (101) via a plurality of connecting rods (202); a sealing ring (203) is arranged between the two opposite hollow rings (201); and an injection component for injecting gas into each sealing ring (203) is provided on the controller body (101).

2. A parallel-charge-series photovoltaic conversion controller according to claim 1, characterized in that: The hollow rings (201) located on the same side are connected via a connecting pipe (204).

3. A parallel-charge-series photovoltaic conversion controller according to claim 1, characterized in that: The gas injection assembly comprises a fixing plate (301) fixedly connected to one side of a controller body (101); a side of the fixing plate (301) away from the controller body (101) is fixedly connected to a gas injection pipe (302); the gas injection pipe (302) is slidably connected to a gas injection plate (304); the gas injection pipe (302) is provided with a driving assembly for driving the gas injection plate (304); a mounting pipe (306) is provided at one end of the gas injection pipe (302) close to the hollow ring (201); the other end of the mounting pipe (306) is connected to the hollow ring (201); and a side wall of the gas injection pipe (302) is fixedly connected to an air inlet pipe (305).

4. A parallel-charge-series photovoltaic conversion controller according to claim 3, characterized in that: One-way valves (307) are respectively provided in the air intake pipe (305) and the air injection pipe (302), and the conducting direction of the two one-way valves (307) is from the air intake end of the air intake pipe (305) to the installation pipe (306).

5. A parallel-charging and serial-using photovoltaic conversion controller according to claim 3, characterized in that: A gas relief valve (308) is provided on the side wall of the installation pipe (306).

6. A parallel-charging and serial-using photovoltaic conversion controller according to claim 3, characterized in that: The driving assembly comprises a T-shaped rod (401) slidably connected to the gas injection pipe (302), one end of the T-shaped rod (401) is connected to the gas injection plate (304), and a spring (402) is sleeved on the side wall of the T-shaped rod (401) located inside the gas injection pipe (302), and the two ends of the spring (402) are respectively connected to the gas injection plate (304) and the inner wall of the gas injection pipe (302).

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