CN211018704U - An off-grid photovoltaic power generation device for teaching - Google Patents

Abstract

The utility model discloses an off-grid photovoltaic power generation device for teaching, which comprises a photovoltaic bracket, a photovoltaic component, an adjustable U-shaped clamp and a porous steel plate arranged on the photovoltaic bracket, wherein the photovoltaic bracket comprises four upright posts and a frame arranged at the upper part and the lower part of the four upright posts, the bottom of the upright posts is provided with rubber trundles, the photovoltaic component is arranged on the upper frame, the photovoltaic component is provided with a photovoltaic special-purpose press block, the photovoltaic component is fixed on the frame through the photovoltaic special-purpose press block, the porous steel plate is arranged on the lower frame and fixed through bolts, the porous steel plate is provided with a storage battery, a photovoltaic controller, an off-grid inverter, a direct current load and an alternating current load which are respectively fixed through the adjustable U-shaped clamp, all parts of the device are connected to form a whole body, the device is convenient to move through the rubber universal trundle, experimental teaching can be carried, the defects that an existing off-grid photovoltaic power generation device for teaching is high in integration level, cannot be moved and is difficult to disassemble are overcome.

Description

An off-grid photovoltaic power generation device for teaching

technical field

The utility model belongs to a teaching appliance in the teaching of photovoltaic specialty, in particular to an off-grid photovoltaic power generation device for teaching.

Background technique

With the rapid consumption of fossil energy, energy crisis and environmental problems have become common issues faced by all countries in the world, which has prompted the development and application of new energy to become a global hotspot; photovoltaic power generation technology is due to its large energy reserves, renewable, pollution-free, etc. The characteristics have quickly become an ideal renewable energy technology; the teaching of photovoltaic-related majors in colleges and universities at home and abroad has also flourished.

In the teaching of photovoltaic-related majors, a teaching mode that combines theory and experiment is generally adopted; the experimental teaching of off-grid photovoltaic power generation devices is an important content. The teaching equipment currently used is basically customized by professional companies. Photovoltaic modules, photovoltaic controllers, batteries, off-grid inverters, loads and other components are integrated in the experimental cabinet. Students cannot directly observe the internal components of the device during the experiment. They only need to use the plug-in interface according to the electrical connection diagram. Just connect the circuit; in addition, the current teaching tools are large in size and difficult to disassemble and move. They all use simulated light sources to provide irradiation energy indoors, and cannot directly use solar energy to conduct experiments, which will affect the experimental results of students. Therefore, it is necessary to design a Small, movable, easy to disassemble and assemble off-grid photovoltaic power generation device for teaching.

Utility model content

The purpose of the utility model is to provide an off-grid photovoltaic power generation device for teaching, which is a small, movable, easy-to-disassemble and assemble off-grid photovoltaic power generation device for teaching, which is convenient to carry out experimental teaching outdoors and fully exercise students' practice. Operation ability, improve the experimental effect.

In order to achieve the above-mentioned effects, the utility model adopts the following technical solutions:

The utility model relates to an off-grid photovoltaic power generation device for teaching, which comprises a photovoltaic support, a photovoltaic component, an adjustable U-shaped clamp and a porous steel plate arranged on the photovoltaic support.

The photovoltaic support includes four uprights and frames arranged on the upper and lower parts of the four uprights, rubber casters are arranged at the bottom of the uprights, the photovoltaic components are arranged on the upper frame, and photovoltaic special pressure blocks are arranged on the photovoltaic components, and the photovoltaic components pass through. The photovoltaic special pressure block is fixed on the frame, the porous steel plate is set on the lower frame and fixed by bolts, and the battery, photovoltaic controller, off-grid inverter are respectively fixed on the porous steel plate by adjustable U-shaped clamps. inverter, DC load, AC load.

As a further description of the present invention, the four uprights of the photovoltaic support are set as one set of long and one set of short, and the frame arranged on the upper part of the four uprights is inclined.

As a further description of the present utility model, the adjustable U-shaped clamp includes two L-shaped adjustable fixed seats and two L-shaped adjustable seats, and a chute is provided on the vertical plate of the U-shaped adjustable fixed seat , an oblong fixing hole is arranged on the horizontal plate, one side of the L-shaped adjustment seat is provided with bolts, and the bolts are matched with the chute, and the other side of the two L-shaped adjustment seats is respectively provided with a chute and a bolt matching the chute, The two L-shaped adjustable fixed seats and the two L-shaped adjustable seats are connected by chute and bolt to form a U shape.

As a further description of the present utility model, the photovoltaic controller is connected with photovoltaic modules, batteries, off-grid inverters, DC loads, and AC loads respectively through photovoltaic special wires, and the terminals of the photovoltaic special wires are all set with voltage wire bolts.

As a further description of the present utility model, an air switch is set between the photovoltaic module and the photovoltaic controller, an air switch is set between the off-grid inverter and the photovoltaic controller, and the off-grid inverter is connected to the photovoltaic controller. The DC load is connected in parallel to the load output terminal of the photovoltaic controller.

As a further description of the present utility model, the photovoltaic support is set as a special C-shaped steel, and the rubber caster is set as a rubber universal caster.

Compared with the prior art, the beneficial effects of the present utility model are:

The scheme of the utility model is to connect all the components to form a whole, which is convenient to move through the rubber universal casters, and can carry out experimental teaching outdoors, and all the connections are easy to disassemble and assemble, fully exercise the students' practical operation ability, and solve the problem of the current teaching use. Off-grid photovoltaic power generation devices have disadvantages such as high integration, immovability, and difficulty in disassembly.

Description of drawings

Fig. 1 is the overall structure view of the utility model;

Fig. 2 is the structural view of the adjustable U-shaped clamp of the utility model;

3 is a schematic diagram of the electrical connection of the present invention.

In the picture, 1. Photovoltaic bracket, 11. Rubber caster, 2. Photovoltaic module, 3. Adjustable U-shaped clamp, 31. L-shaped adjustable fixed seat, 32. L-shaped adjustment seat, 4. Porous steel plate, 41. Battery , 42. Photovoltaic controller, 43. Off-grid inverter, 44. DC load, 45. AC load, 5. Air switch.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

An off-grid photovoltaic power generation device for teaching, as shown in FIGS. 1-3 , includes a photovoltaic support 1 , a photovoltaic assembly 2 , an adjustable U-shaped clamp 3 and a porous steel plate 4 arranged on the photovoltaic support 1 .

The photovoltaic support 1 includes four uprights and a frame arranged on the upper and lower parts of the four uprights, the bottom of the uprights is provided with rubber casters 11, the photovoltaic module 2 is arranged on the upper frame, and the photovoltaic module 2 is provided with a special pressure block for photovoltaics. , the photovoltaic module 2 is fixed on the frame through the photovoltaic special pressure block, the porous steel plate 4 is set on the lower frame, and is fixed by bolts, and the battery is fixed on the porous steel plate 4 by the adjustable U-shaped clamps 3 respectively. 41 . Photovoltaic controller 42 , off-grid inverter 43 , DC load 44 , and AC load 45 .

The photovoltaic module 2 is fixed on the frame by a photovoltaic special pressure block, and can be easily disassembled and assembled indoors and outdoors.

The rubber casters 11 and the column and the frame are all fixed by stainless steel inner hexagon bolts, and the bolt size is M10×30mm.

The four uprights of the photovoltaic support 1 are set to be relatively long and short, and the frame arranged on the upper part of the four uprights is inclined.

The adjustable U-shaped fixture 3 includes two L-shaped adjustable fixing seats 31 and two L-shaped adjustable fixing seats 32. The vertical plate of the L-shaped adjustable fixing seat 31 is provided with a chute, and the horizontal plate is provided with a chute. An oblong fixing hole is provided, one side of the L-shaped adjustment seat 32 is provided with bolts, and the bolts cooperate with the chute, and the other side of the two L-shaped adjustment seats 32 are respectively provided with a chute and a bolt matching the chute. The two L-shaped adjustable fixed bases 31 and the two L-shaped adjustable bases 32 are connected to form a U-shape by means of sliding grooves and bolts.

The U-shaped adjustable fixed seat 31 and the L-shaped adjustable seat 32 are composed of steel plates with a width of 20 mm and a thickness of 2 mm, which are suitable for the needs of different size components. The lower part of the adjustable U-shaped fixture 3 is provided with four oblong holes, Stainless steel inner hexagon bolts are fixed with porous steel plate 4 .

The photovoltaic controller 42 is respectively connected to the photovoltaic module 2, the battery 41, the off-grid inverter 43, the DC load 44, and the AC load 45 through the photovoltaic special wires, and the terminals of the photovoltaic special wires are provided with crimping bolts. .

An air switch 5 is set between the photovoltaic module 2 and the photovoltaic controller 42 , an air switch 5 is set before the off-grid inverter 43 and the photovoltaic controller 42 , and the off-grid inverter 43 is connected to the DC load. 44 is connected in parallel to the load output terminal of the photovoltaic controller 42 .

The photovoltaic support 1 is made of special C-shaped steel with a specification of 41mm*41mm*2mm.

The rubber caster 11 is set as a rubber swivel caster with a size of 4 inches.

In the solution of the present invention, the DC load 44 is set as a DC LED lamp, and the AC load 45 is set as a small AC fan.

The photovoltaic module 2 described in the solution of the utility model is a 280W monocrystalline silicon photovoltaic module with a size of 1650mm×992mm×35mm; the battery 41 is a 24V24Ah lead-acid battery for energy storage; the parameter of the photovoltaic controller 42 is 24V; The parameter of inverter 43 is 300W24V, the parameter of DC LED lamp is 24V36W; the parameter of AC small fan is 220V20W; the special wire for photovoltaic is single-core 4mm2 multi-strand tinned copper wire; the specification of air switch ⁵ is single-circuit 1P20A; the size of porous steel plate 4 is 1000mm×800mm×2mm, the aperture is 10mm, and the hole spacing is 30mm.

The scheme of the utility model is to connect all the components to form a whole, the overall size is small, it is convenient to move through the rubber universal casters, and the structural connection and electrical connection are convenient for disassembly and assembly, and experimental teaching can be carried out indoors or outdoors, fully To carry out students' practical operation ability, and carry out experiments for off-grid photovoltaic device recognition, construction, disassembly, demonstration and other experiments for photovoltaic-related students, which solves the shortcomings of the current teaching off-grid photovoltaic power generation devices, such as high integration, immovability, and difficulty in disassembly.

Claims (6)

1. An off-grid photovoltaic power generation device for teaching, it comprises a photovoltaic support, a photovoltaic assembly, an adjustable U-shaped clamp and a porous steel plate arranged on the photovoltaic support, it is characterized in that: the photovoltaic support comprises four uprights and a device. On the upper and lower frames of the four uprights, rubber casters are arranged at the bottom of the uprights, the photovoltaic modules are arranged on the upper frame, the photovoltaic modules are provided with photovoltaic special pressure blocks, and the photovoltaic components are fixed on the frame by the photovoltaic special pressure blocks. The porous steel plate is set on the lower frame and fixed by bolts. The battery, photovoltaic controller, off-grid inverter, DC load and AC load are respectively fixed on the porous steel plate by adjustable U-shaped clamps. 2 . An off-grid photovoltaic power generation device for teaching according to claim 1 , wherein the four columns of the photovoltaic support are set as a relatively long and a short set, and are arranged on the upper part of the four columns. 3 . The frame is inclined. 3 . An off-grid photovoltaic power generation device for teaching according to claim 1 , wherein the adjustable U-shaped clamp comprises two L-shaped adjustable fixed seats and two L-shaped adjustable seats. The vertical plate of the L-shaped adjustable fixing seat is provided with a chute, and the horizontal plate is provided with an oblong fixing hole. The L-shaped adjustment seat is provided with bolts on one side, and the bolts cooperate with the chute. The two L-shaped adjustment A chute and a bolt matching the chute are respectively provided on the other side of the seat, and the two L-shaped adjustable fixed seats and the two L-shaped adjustable seats are connected by the chute and the bolt to form a U shape. 4. An off-grid photovoltaic power generation device for teaching according to claim 1, characterized in that: the photovoltaic controller is connected to photovoltaic modules, batteries, off-grid inverters, DC loads, alternating current For load connection, the terminals of the photovoltaic special wires are all provided with crimping bolts. 5. An off-grid photovoltaic power generation device for teaching according to claim 4, characterized in that: an air switch is arranged between the photovoltaic module and the photovoltaic controller, and the off-grid inverter and the photovoltaic controller are provided with an air switch. Before setting the air switch, the off-grid inverter and the DC load are connected in parallel to the load output end of the photovoltaic controller. 6 . The off-grid photovoltaic power generation device for teaching according to claim 1 , wherein the photovoltaic support is set as a special C-shaped steel, and the rubber caster is set as a rubber universal caster. 7 .

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