Distributed photovoltaic grid-connected auxiliary control device

Abstract

The utility model relates to the technical field of solar grid-connected assemblies, in particular to a distributed photovoltaic grid-connected auxiliary control device, which comprises a control box, a cover plate and an auxiliary mechanism, a convex bin is arranged above the control box, a radiating fin group is arranged above the convex bin, and the auxiliary mechanism comprises two fixing blocks, a turbofan and four mounting blocks. Fixing assemblies are arranged in the fixing blocks, fixing grooves are formed in the two sides of each turbofan, the two fixing blocks are fixedly connected with the cooling fin set and located on the two sides of the cooling fin set, the two fixing assemblies are connected with the turbofans in a clamped mode and located in the corresponding fixing grooves, and the turbofans abut against the corresponding mounting blocks. The turbofan is arranged in the heat dissipation fin group and located among the four mounting blocks and right above the heat dissipation fin group, the four mounting blocks are fixedly connected with the heat dissipation fin group and located at four opposite angles of the heat dissipation fin group, heat dissipation is actively carried out through the turbofan, and therefore the heat dissipation effect of the heat dissipation fin group can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy grid-connected components, in particular to a distributed photovoltaic grid-connected auxiliary control device. Background Art

[0002] Solar energy has been studied and utilized in various countries. Solar power generation systems have been widely used throughout the world for their stable and reliable power supply, easy installation, simple operation and maintenance, beautiful appearance, and long service life. They are gradually changing from supplementary energy to alternative energy. Solar power generation systems include controllers, inverters, and photovoltaic application devices. Solar grid-connected power generation systems convert solar energy into electrical energy to generate current, and then send the electrical energy to the power grid through connectors and grid-connected inverters. Since no batteries are required, the cost is lower and the system has a longer operating life. In addition, remote monitoring can be carried out during operation without the need for personnel supervision, saving manpower. Grid-connected power generation has become one of the effective ways to apply solar energy on a large scale, reducing pollution, It will also bring inestimable social benefits in terms of energy saving and environmental protection. There are many types of controllers for existing solar grid-connected systems. Currently, a solar grid-connected controller includes a mounting base plate and a control box for accommodating a control module that matches the mounting base plate. The control box is installed on the mounting base plate through fasteners. A network cable interface and a 458 interface are arranged on the side of the control box body. The solar grid-connected controller formed by the existing technology has a simple structure, is convenient and practical, and can add external components to improve the performance of the controller on the one hand; on the other hand, it can more intuitively and clearly reflect the timely parameters of the controller; but its function is single and it cannot adapt well to the distributed photovoltaic power generation grid-connected system.

[0003] The prior art patent CN207967958U discloses a distributed photovoltaic power generation multifunctional grid-connected control device, comprising a control box body with a hollow bottom surface, the top surface of the control box body is integrally formed with a convex bin, and the inner bottom surface of the control box body is integrally formed with an inner retaining edge; a cover plate is installed on the bottom surface of the control box body by bolts; a string-type photovoltaic inverter is fixed to the top surface of the cover plate by bolts; a switching switch is fixed to the top surface of the cover plate by a support, and a main control board is installed on the inner side of the convex bin; a DC input waterproof terminal and a charging waterproof terminal are arranged on one side of the control box body; an AC output waterproof terminal and an electric energy detection waterproof terminal are installed on the DC input waterproof terminal and the opposite side of the control box body, and a heat dissipation fin group is integrally formed on the outer top surface of the convex bin to facilitate heat dissipation; the distributed photovoltaic power generation multifunctional grid-connected control device of the prior art has a simple structure and diversified functions, and can well integrate electric energy into the power grid.

[0004] However, in the above-mentioned prior art, since the installed heat dissipation fin group is a passive heat dissipation element, active heat dissipation cannot be performed, thereby reducing the heat dissipation effect of the device. Utility Model Content

[0005] The utility model aims to provide a distributed photovoltaic grid-connected auxiliary control device, aiming to solve the technical problem in the prior art that the installed heat dissipation fin group is a passive heat dissipation element, which cannot perform active heat dissipation, thereby reducing the heat dissipation effect of the device.

[0006] To achieve the above-mentioned purpose, the utility model adopts a distributed photovoltaic grid-connected auxiliary control device, including a control box, a cover plate and an auxiliary mechanism, a DC-DC module and an electric energy detection module are arranged on one side of the control box, a convex bin is arranged above the control box, a main control board is arranged on the inner side of the convex bin, a heat dissipation fin group is arranged above the convex bin, a switching switch and a photovoltaic inverter are arranged on the cover plate, and the DC-DC module, the electric energy detection module, the switching switch and the photovoltaic inverter are all connected to the main control board, the control box is fixedly connected to the cover plate and is located above the cover plate, and is also located above the photovoltaic inverter. On one side of the inverter, the auxiliary mechanism includes two fixed blocks, a turbofan and four mounting blocks, a fixed assembly is arranged in the fixed block, both sides of the turbofan are provided with fixed grooves, the two fixed blocks are respectively fixedly connected to the heat dissipation fin group and are located on both sides of the heat dissipation fin group, the two fixed assemblies are respectively engaged with the turbofan and are located in the corresponding fixed grooves, the turbofan and the corresponding mounting blocks are abutted against each other and are located between the four mounting blocks and are also located directly above the heat dissipation fin group, the four mounting blocks are respectively fixedly connected to the heat dissipation fin group and are located at four diagonals of the heat dissipation fin group.

[0007] Wherein, the auxiliary mechanism also includes two handles, which are respectively fixedly connected to the turbofan and located at two ends of the turbofan.

[0008] Among them, the fixing assembly includes a threaded sleeve, a connecting rod and a fixing rod, one end of the connecting rod has a thread, the end face of the fixing block has a C-shaped groove, and the C-shaped groove has a circular groove. The threaded sleeve is threadedly connected to the connecting rod and is sleeved on the thread, and the threaded sleeve also abuts against the fixing block and is located in the circular groove. The connecting rod is fixedly connected to the fixing rod and is located at one end of the fixing rod and is also located in the C-shaped groove. The fixing rod is slidably connected to the fixing block and is located in the C-shaped groove. The fixing rod is also clamped with the turbofan, is located in the fixing groove, and passes through the C-shaped groove.

[0009] Wherein, the distributed photovoltaic grid-connected auxiliary control device also includes two bolt seats, which are respectively fixedly connected to the cover plate and are located at both ends of the cover plate.

[0010] Among them, the switching switch includes a switch body and a support, the switch body is fixedly connected to the support and is located above the support, and the switch body is also connected to the main control board, the support is fixedly connected to the cover plate and is located above the cover plate, and is also located on one side of the photovoltaic inverter.

[0011] The utility model discloses a distributed photovoltaic grid-connected auxiliary control device, comprising a control box, a cover plate and an auxiliary mechanism, wherein a convex bin is arranged above the control box, a heat dissipation fin group is arranged above the convex bin, the auxiliary mechanism comprises two fixed blocks, a turbofan and four mounting blocks, a fixed assembly is arranged in the fixed block, both sides of the turbofan have fixed grooves, two fixed blocks are respectively fixedly connected to the heat dissipation fin group and are located on both sides of the heat dissipation fin group, two fixed assemblies are respectively engaged with the turbofan and are located in the corresponding fixed grooves, the turbofan and the corresponding mounting blocks are mutually supported, and are located between the four mounting blocks, and are also located directly above the heat dissipation fin group, the four mounting blocks are respectively fixedly connected to the heat dissipation fin group and are located at four diagonal corners of the heat dissipation fin group, and the turbofan actively dissipates heat, thereby effectively improving the heat dissipation effect of the heat dissipation fin group. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the auxiliary mechanism in the first embodiment of the utility model.

[0015] Figure 3 The utility model Figure 2 Section view along line AA.

[0016] Figure 4 The utility model Figure 2 Sectional view along line BB.

[0017] Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0018] 101-control box, 102-cover plate, 103-DC-DC module, 104-electric energy detection module, 105-convex compartment, 106-main control board, 107-heat dissipation fin group, 108-switching switch, 109-photovoltaic inverter, 110-fixing block, 111-turbo fan, 112-mounting block, 113-fixing groove, 114-handle, 115-threaded sleeve, 116-connecting rod, 117-fixing rod, 118-C-shaped groove, 119-circular slot, 201-bolt seat, 202-switch body, 203-support. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] First embodiment:

[0021] See also Figure 1 to Figure 4 ,in Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 This is a schematic diagram of the structure of the auxiliary mechanism in the first embodiment of the utility model. Figure 3 The utility model Figure 2 The cross-sectional view along the AA line. Figure 4 The utility model Figure 2 Sectional view along line BB.

[0022] The utility model provides a distributed photovoltaic grid-connected auxiliary control device, including a control box 101, a cover plate 102 and an auxiliary mechanism, the auxiliary mechanism includes two fixed blocks 110, a turbo fan 111, four mounting blocks 112 and two handles 114, the fixing assembly includes a threaded sleeve 115, a connecting rod 116 and a fixing rod 117, and the above-mentioned scheme solves the technical problem that the installed heat dissipation fin group 107 is a passive heat dissipation element, and thus active heat dissipation cannot be performed, thereby reducing the heat dissipation effect of the device. It can be understood that the above-mentioned scheme can be used in the scenario of heat dissipation of the device, and can also be used to solve the problem of poor heat dissipation effect of the device.

[0023] According to this specific embodiment, a DC-DC module 103 and an electric energy detection module 104 are arranged on one side of the control box 101, a convex warehouse 105 is arranged above the control box 101, a main control board 106 is arranged inside the convex warehouse 105, a heat dissipation fin group 107 is arranged above the convex warehouse 105, a switch 108 and a photovoltaic inverter 109 are arranged on the cover plate 102, and the DC-DC module 103, the electric energy detection module 104, the switch 108 and the photovoltaic inverter 109 are all connected to the The control box 101 is connected to the main control board 106, the control box 101 is fixedly connected to the cover plate 102, and is located above the cover plate 102, and is also located on one side of the photovoltaic inverter 109. The current capacity is detected by the power detection module 104. When it is charged, the switching switch 108 is controlled to merge the power on the DC bus into the power grid through the photovoltaic inverter 109. The photovoltaic inverter 109 has a wide adaptability range and can accept multiple fluctuating power transmitted by each photovoltaic of distributed photovoltaics, and convert it into AC power to be transmitted to the household network or the municipal network.

[0024] Among them, a fixing component is arranged in the fixing block 110, and fixing grooves 113 are provided on both sides of the turbofan 111. The two fixing blocks 110 are respectively fixedly connected to the heat dissipation fin group 107 and are located on both sides of the heat dissipation fin group 107. The two fixing components are respectively engaged with the turbofan 111 and are located in the corresponding fixing grooves 113. The turbofan 111 and the corresponding mounting block 112 are mutually supported and are located between the four mounting blocks 112, and are also located directly above the heat dissipation fin group 107. The four mounting blocks 112 are respectively fixedly connected to the heat dissipation fin group 107 and are located at four diagonal corners of the heat dissipation fin group 107. Active heat dissipation is performed by the turbofan 111, which can effectively improve the heat dissipation effect of the heat dissipation fin group 107. The turbofan 111 is engaged and fixed by the fixing component, so that the turbofan 111 can be easily disassembled or installed. The four mounting blocks 112 can easily support the turbofan 111.

[0025] Secondly, the two handles 114 are respectively fixedly connected to the turbofan 111 and are located at both ends of the turbofan 111. The turbofan 111 can be easily lifted or lowered by the handles 114.

[0026] Again, one end of the connecting rod 116 has a thread, the end face of the fixing block 110 has a C-shaped groove 118, and the C-shaped groove 118 has a circular groove 119. The threaded sleeve 115 is threadedly connected to the connecting rod 116 and sleeved on the thread, and the threaded sleeve 115 also abuts against the fixing block 110 and is located in the circular groove 119. The connecting rod 116 is fixedly connected to the fixing rod 117 and is located at one end of the fixing rod 117 and is also located in the C-shaped groove 118. The fixing rod 117 is slidably connected to the fixing block 110 and is located in the C-shaped groove 118. The fixing rod 117 is also engaged with the turbofan 111 and is located in the fixing groove 113 and passes through the C-shaped groove 118. The threaded sleeve 115 is supported in the circular groove 119 to limit the movement of the connecting rod 116, thereby preventing the fixing rod 117 from moving out of the fixing groove 113, thereby making the connection between the fixing rod 117 and the fixing groove 113 tighter.

[0027] When the utility model is used to dissipate heat for the device, the heat inside the device is conducted to the heat dissipation fin group 107, the turbofan 111 is started, and the exhaust end of the turbofan 111 is arranged outwardly, and the intake end is arranged inwardly, thereby accelerating the flow of heat on the heat dissipation fin group 107 and blowing it out through the turbofan 111, thereby improving the heat dissipation effect of the device, and in this way solves the technical problem that the installed heat dissipation fin group 107 is a passive heat dissipation element, and thus active heat dissipation cannot be performed, thereby reducing the heat dissipation effect of the device.

[0028] The second embodiment is:

[0029] Based on the first embodiment, please refer to Figure 5 ,in Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0030] The utility model provides a distributed photovoltaic grid-connected auxiliary control device, which also includes two bolt seats 201 , and the switching switch 108 includes a switch body 202 and a support 203 .

[0031] According to this specific embodiment, the two bolt seats 201 are respectively fixedly connected to the cover plate 102 and are located at two ends of the cover plate 102 . The cover plate 102 can be installed indoors or outdoors through the bolt seats 201 .

[0032] Among them, the switch body 202 is fixedly connected to the support 203 and is located above the support 203, and the switch body 202 is also connected to the main control board 106, the support 203 is fixedly connected to the cover plate 102 and is located above the cover plate 102, and is also located on one side of the photovoltaic inverter 109. The support 203 can be used to easily support the switch body 202, thereby facilitating the switch body 202 to work with other components.

[0033] A distributed photovoltaic grid-connected auxiliary control device using this embodiment can be installed indoors or outdoors through the bolt seat 201, and the support 203 can facilitate the support of the switch body 202, thereby facilitating the switch body 202 to work with other components.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A distributed photovoltaic grid-connected auxiliary control device, comprising a control box and a cover plate, a DC-DC module and an electric energy detection module are arranged on one side of the control box, a convex bin is arranged above the control box, a main control board is arranged inside the convex bin, a heat dissipation fin group is arranged above the convex bin, a switching switch and a photovoltaic inverter are arranged on the cover plate, and the DC-DC module, the electric energy detection module, the switching switch and the photovoltaic inverter are all connected to the main control board, the control box is fixedly connected to the cover plate, and is located above the cover plate, and is also located on one side of the photovoltaic inverter, characterized in that: It also includes auxiliary institutions; The auxiliary mechanism includes two fixed blocks, a turbofan and four mounting blocks, wherein a fixed assembly is arranged in the fixed block, and fixing grooves are provided on both sides of the turbofan. The two fixed blocks are respectively fixedly connected to the heat dissipation fin group and are located on both sides of the heat dissipation fin group. The two fixed assemblies are respectively engaged with the turbofan and are located in the corresponding fixing grooves. The turbofan and the corresponding mounting blocks are abutted against each other and are located between the four mounting blocks and directly above the heat dissipation fin group. The four mounting blocks are respectively fixedly connected to the heat dissipation fin group and are located at four diagonals of the heat dissipation fin group.

2. The distributed photovoltaic grid-connected auxiliary control device according to claim 1, characterized in that: The auxiliary mechanism also includes two handles, which are respectively fixedly connected to the turbofan and located at two ends of the turbofan.

3. The distributed photovoltaic grid-connected auxiliary control device according to claim 2, characterized in that: The fixing assembly includes a threaded sleeve, a connecting rod and a fixing rod, one end of the connecting rod has a thread, the end face of the fixing block has a C-shaped groove, and the C-shaped groove has a circular groove. The threaded sleeve is threadedly connected to the connecting rod and is sleeved on the thread, and the threaded sleeve also abuts against the fixing block and is located in the circular groove. The connecting rod is fixedly connected to the fixing rod and is located at one end of the fixing rod and is also located in the C-shaped groove. The fixing rod is slidably connected to the fixing block and is located in the C-shaped groove. The fixing rod is also clamped with the turbofan and is located in the fixing groove and passes through the C-shaped groove.

4. The distributed photovoltaic grid-connected auxiliary control device according to claim 3, characterized in that: The distributed photovoltaic grid-connected auxiliary control device also includes two bolt seats, which are respectively fixedly connected to the cover plate and are located at both ends of the cover plate.

5. The distributed photovoltaic grid-connected auxiliary control device according to claim 4, characterized in that: The switching switch includes a switch body and a support, the switch body is fixedly connected to the support and is located above the support, and the switch body is also connected to the main control board, the support is fixedly connected to the cover plate and is located above the cover plate, and is also located on one side of the photovoltaic inverter.

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