CN113489450B - Household photovoltaic system - Google Patents

Abstract

The invention relates to the technical field of photovoltaic systems, and discloses a household photovoltaic system, which includes a bracket, a battery panel, a cleaning device and a base station; the bracket is installed on the sunny side of the roof, and the battery panel is installed on the bracket. The cleaning device is installed on the roof for cleaning the surface of the battery panels, and the base station is set on the wall; the base station is equipped with a controller, a battery, an inverter and an electricity meter, and the battery panels are electrically connected to the controller. The controller is electrically connected to the battery, and under the protection of the controller, the electric energy generated by the battery panel is stored in the battery. The panels of this household photovoltaic system are installed directly on the roof, taking up no floor space, and there is no shield on the roof, which will not block sunlight, so it is difficult to affect the panels. In addition, the roof area is large and can be laid over a large area. panels to improve power generation efficiency.

Description

A household photovoltaic system

Technical field

The present invention relates to the technical field of photovoltaic systems, specifically a household photovoltaic system.

Background technique

With the development of the global economy, new energy power generation technology has also developed rapidly. Solar energy has become one of the most promising renewable energy sources due to its abundant resources, wide distribution and cleanliness. Since entering the 21st century, the world's solar photovoltaic power generation industry has developed rapidly, the scale of market application has continued to expand, and its role in the subsequent development of energy has become increasingly important. The development and utilization of solar photovoltaic technology is one of the important measures for my country to implement a resource-saving society, energy conservation, emission reduction, sustainable development and improvement of the living environment.

Photovoltaic systems are generally divided into independent systems, grid-connected systems and hybrid systems. If the solar photovoltaic system can be carefully divided into six types according to its application form, application scale and load type, it can effectively alleviate the demand conflict in areas with power shortages and solve life and communication problems in remote areas. Improve the global ecological environment and promote sustainable human development.

Among them, the household photovoltaic system refers to placing photovoltaic panels on the top floor or in the courtyard of a household, using a small power or micro-inverter to perform the commutation process, and directly utilizing the new energy, or integrating the excess power into the power grid. . Currently, light energy is collected and converted through solar photovoltaic modules on the market, but the installation process is too complicated, and the dust on the surface of the solar photovoltaic modules affects the power generation efficiency. For this reason, we propose a household photovoltaic system.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the present invention provides a household photovoltaic system.

The present invention provides the following technical solutions: a household photovoltaic system, including a bracket, a battery panel, a cleaning device and a base station;

The bracket is installed on the sunny side of the roof, and the battery panel is installed on the bracket. The cleaning device is installed on the roof for cleaning the surface of the battery panel, and the base station is installed on the wall;

The base station is equipped with a controller, a battery, an inverter and an electric meter. The battery panel is electrically connected to the controller, and the controller is electrically connected to the battery. Under the protection of the controller, the electric energy generated by the battery panel is stored in batteries;

The controller is electrically connected to the inverter, and the inverter is electrically connected to the electric meter. The electric energy is converted into alternating current through the inverter and imported into the AC power grid through the electric meter, and the alternating current can be directly used for the AC load.

Preferably, the bracket includes cross beams, support beams and clamps. The cross beams are provided in multiple groups and installed on the roof, and the support beams are provided with multiple sets and are installed at 90° to the cross beams. The battery panels pass through The clamps are installed on the support beams.

Preferably, the clamping member includes several shaped steel, bolts and connecting blocks. The supporting beam is provided with a chute. The connecting block is located in the chute on the supporting beam and is slidingly connected with the chute. The bolt Threaded connection with the connection block in the chute on the support beam through several shaped steel.

Preferably, the cross beams are installed on the roof through supports, and the battery panels are adjusted to the optimal power generation angle through the supports.

Preferably, the cleaning device includes a cleaning pipe, a solenoid valve, a tap water pipe and a PLC controller. The cleaning pipe is installed on the tap water pipe through the solenoid valve, and multiple sets of nozzles are installed on the cleaning pipe, and the PLC controller is electrically connected to the solenoid valve. sexual connection.

Preferably, the PLC controller is provided with a time period for regularly opening the solenoid valve. The solenoid valve is automatically opened at intervals to connect the water pipe to the cleaning pipe and cause the water flow to be sprayed from the nozzle to affect the surface of the battery panel. Perform cleaning.

Preferably, when the weather conditions of the base station are good during the day, the battery panel provides power to the inverter through the controller, and finally supplies the AC load. The power consumption is small during the day, and the excess power can be stored in the battery pack or sold. To the grid; when the weather conditions are poor or at night, the battery can provide power to the inverter through the controller, and finally supply the AC load. If the battery power is not enough to meet the AC load, it can be switched to the grid for power supply.

Preferably, the base station is equipped with a fire alarm system, a moisture-proof device and a heat dissipation system.

Compared with existing technology, this household photovoltaic system has the following beneficial effects:

(1) The panels are installed directly on the roof, occupying no ground space, and there is no shield on the roof, which will not block the sunlight, so it is difficult to affect the panels. In addition, the roof area is large, and the panels can be laid over a large area. Thereby improving power generation efficiency;

(2) The bracket only needs to be installed on the roof, and the panel does not need to be drilled when installing, and it can be stably installed on the bracket. The installation process is simple, and the bracket is assembled using multiple structures, so it can be installed according to According to the needs and roof area, splice the brackets to the appropriate size to facilitate the reasonable installation of photovoltaic modules;

(3) Use the cleaning device to spray water on the panel, and use the water flow to flow down the surface of the panel to wash away the dust on it, thereby improving the power generation efficiency of the panel. In addition, the cleaning device can automatically clean the panel, so It is convenient and does not require too much operation;

(4) The base station regulates and controls the electric energy generated by the battery panel. On the one hand, it sends the adjusted energy to the AC load, and on the other hand, it sends the excess energy to the battery pack for storage. When the generated power cannot meet the load needs , the controller sends the battery's power to the load. After the battery is fully charged, the controller must control the battery from being overcharged. When the battery's stored power is discharged, the controller must control the battery from being overdischarged to protect the battery. and connect electric energy to the grid.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic structural diagram of the stent of the present invention;

Figure 3 is a schematic structural diagram of the cleaning device of the present invention;

Figure 4 is a schematic diagram of the internal system structure of the base station of the present invention.

In the picture: 1. Bracket; 2. Battery panel; 3. Cleaning device; 4. Base station; 11. Cross beam; 12. Support beam; 13. Clamp; 21. Shaped steel; 22. Bolt; 23. Connecting block.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. In order to maintain the following description of the embodiments of the present disclosure For clarity and conciseness, this disclosure omits detailed descriptions of known functions and components to avoid unnecessarily obscuring the concepts of the invention.

Please refer to Figure 1-4, a household photovoltaic system, including a bracket 1, a panel 2, a cleaning device 3 and a base station 4;

The bracket 1 is installed on the sunny side of the roof, and the battery panel 2 is installed on the bracket 1. The cleaning device 3 is installed on the roof for cleaning the surface of the battery panel 2, and the base station 4 is installed on the wall; the battery The panel 2 is directly installed on the roof, taking up no ground space, and there is no shield on the roof, which will not block the sunlight, so it is difficult to affect the battery panel 2. In addition, the roof area is large, and the battery panel 2 can be laid over a large area, thus Improve power generation efficiency.

The bracket 1 includes a cross beam 11, a support beam 12 and a clamp 13. The cross beam 11 is provided with multiple groups and is installed on the roof, and the support beam 12 is provided with multiple groups and is installed at 90° to the cross beam 11, so The battery panel 2 is installed on the support beam 12 through the clamp 13.

The clamp 13 includes a geometric steel 21, bolts 22 and a connecting block 23. The support beam 12 is provided with a chute. The connecting block 23 is located in the chute on the support beam 12 and is slidingly connected to the chute. , the bolt 22 is threadedly connected to the connecting block 23 in the upper chute of the support beam 12 through the several-shaped steel 21. During installation, the bolt 22 is connected to the connecting block 23 through the several-shaped steel 21, and the connecting block 23 is inserted into the support. In the chute on the beam 12, move the position of the clamp 13 so that the geometric steel 21 is in contact with the two battery panels 2, and tighten the bolts so that the connecting block 23 and the geometric steel 21 are tightly attached to the support beam 12. Use The several-shaped steel 21 presses the battery panel 2 to complete the installation of the battery panel 2, and there is no need to drill holes in the process, which is convenient.

The cross beam 11 is installed on the roof through the support, and the panel 2 is adjusted to the optimal power generation angle through the support. The optimal inclination angle of the panel makes the annual power generation of the solar cell as large as possible, and the power generation in winter and summer. The inclination angle with the smallest difference as possible is generally taken as the local latitude or the local latitude plus a few degrees as the inclination angle for local solar cell module installation. Therefore, during installation, it is necessary to select a suitable model of support according to the location and the angle of the roof.

The cleaning device 3 includes a cleaning pipe, a solenoid valve, a tap water pipe and a PLC controller. The cleaning pipe is installed on the tap water pipe through the solenoid valve, and multiple sets of nozzles are installed on the cleaning pipe, and the PLC controller is electrically connected to the solenoid valve. , use the cleaning device 3 to spray water on the battery panel 2, and use the water flow to flow down the surface of the battery panel 2 to wash away the dust on it, thereby improving the power generation efficiency of the battery panel 2. In addition, the cleaning device 3 can automatically clean the battery panel 2 Cleaning is easy and does not require too many operations.

The PLC controller is provided with a time period for regularly opening the solenoid valve. The solenoid valve is automatically opened at regular intervals to connect the water pipe to the cleaning pipe and cause the water flow to be sprayed from the nozzle to clean the surface of the battery panel 2 .

The base station 4 is equipped with a controller, a battery, an inverter and an electricity meter. The battery panel 2 is electrically connected to the controller, and the controller is electrically connected to the battery. Under the protection of the controller, the battery panel 2 The generated electrical energy is stored in the battery;

The controller is electrically connected to the inverter, and the inverter is electrically connected to the electric meter. The electric energy is converted into alternating current through the inverter and imported into the AC power grid through the electric meter, and the alternating current can be directly used for the AC load.

When the weather conditions of the base station 4 are good during the day, the battery panel provides power to the inverter through the controller, and finally supplies the AC load. The power consumption is small during the day, and the excess power can be stored in the battery pack or sold to the grid. ; When the weather conditions are poor or at night, the battery can provide power to the inverter through the controller, and finally supply the AC load. If the battery power is not enough to meet the AC load, it can be switched to the grid for power supply.

The base station 4 is equipped with a fire alarm system, a moisture-proof device and a heat dissipation system, so as to protect the internal environment of the base station 4 and avoid problems with the equipment inside.

The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the present invention.

Claims (3)

1. A household photovoltaic system, characterized by: comprises a bracket (1), a battery plate (2), a cleaning device (3) and a base station (4);

the cleaning device comprises a bracket (1), a battery plate (2), a cleaning device (3) and a base station (4), wherein the bracket (1) is arranged on one side of a roof facing the sun, the battery plate (2) is arranged on the bracket (1), the cleaning device (3) is arranged on the roof and is used for cleaning the surface of the battery plate (2), and the base station (4) is arranged on a wall;

the base station (4) is internally provided with a controller, a storage battery, an inverter and an ammeter, the battery plate (2) is electrically connected with the controller, the controller is electrically connected with the storage battery, and under the protection of the controller, the electric energy generated by the battery plate (2) is stored in the storage battery;

the controller is electrically connected with the inverter, the inverter is electrically connected with the electric meter, electric energy is converted into alternating current through the inverter and is imported into an alternating current power grid through the electric meter, and the alternating current can be directly used for an alternating current load;

the bracket (1) comprises a beam (11), a supporting beam (12) and clamping pieces (13), wherein the beam (11) is provided with a plurality of groups and is arranged on a roof, the supporting beam (12) is provided with a plurality of groups and is arranged at an angle of 90 degrees with the beam (11), and the battery plate (2) is arranged on the supporting beam (12) through the clamping pieces (13);

the clamping piece (13) comprises a table-shaped steel (21), a bolt (22) and a connecting block (23), wherein a chute is formed in the supporting beam (12), the connecting block (23) is positioned in the chute on the supporting beam (12) and is in sliding connection with the chute, and the bolt (22) is in threaded connection with the connecting block (23) in the chute on the supporting beam (12) through the table-shaped steel (21);

the cleaning device (3) comprises a cleaning pipe, an electromagnetic valve, a tap water pipeline and a PLC controller, wherein the cleaning pipe is arranged on the tap water pipeline through the electromagnetic valve, a plurality of groups of spray heads are arranged on the cleaning pipe, and the PLC controller is electrically connected with the electromagnetic valve;

the PLC is internally provided with a time period for starting the electromagnetic valve at regular time, and the electromagnetic valve is automatically opened at intervals to enable a tap water pipeline to be communicated with the cleaning pipe and enable water flow to be sprayed out of the spray head so as to clean the surface of the battery plate (2);

when the daytime weather condition is good, the base station (4) supplies power to the inverter through the controller by the battery board, and finally supplies alternating current load, so that the daytime electricity consumption is low, and the redundant electric energy can be stored in the storage battery pack or sold to a power grid; when weather conditions are poor or at night, the storage battery can provide power for the inverter through the controller and finally supply alternating current load, and if the electric energy of the storage battery is insufficient to meet the alternating current load, the power supply can be switched to the power grid for supplying power.

2. A household photovoltaic system according to claim 1, wherein: the cross beam (11) is arranged on a roof through a support, and the battery plate (2) is adjusted to an optimal power generation angle through the support.

3. A household photovoltaic system according to claim 1, wherein: and a fireproof alarm system, a moistureproof device and a heat dissipation system are arranged in the base station (4).