Roof photovoltaic system

Abstract

The utility model relates to a roof photovoltaic system which comprises a controller and a power generation module and an energy storage module which are electrically connected with the controller, the power generation module is electrically connected with the energy storage module, a monitoring module is arranged on the side face of the power generation module, and the monitoring module comprises a visual monitoring unit, a dust monitoring unit, a temperature and humidity monitoring unit and an infrared monitoring unit. The power generation module is provided with a cleaning module, the cleaning module is electrically connected with the controller, the controller is further connected with a marking module and an alarm module, and the marking module is electrically connected with the cleaning module. By arranging the monitoring module and the cleaning module, the power generation module can be comprehensively monitored, the cleaning module is controlled to clean at regular time according to the dust condition and the temperature and humidity condition, and the cleanliness of the power generation module is guaranteed; the controller can judge whether hot spots still exist on the power generation modules or not according to signals of the monitoring module after the cleaning module acts, the marking module marks the power generation modules still having the hot spots after cleaning, and searching and positioning during maintenance are facilitated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of photovoltaic power generation, in particular to a roof photovoltaic system. BACKGROUND

[0002] The photovoltaic power generation system refers to a power generation system for directly converting solar radiation energy into electric energy by using the photovoltaic effect of a photovoltaic cell. The photovoltaic power generation system can be divided into an independent photovoltaic power generation system, a grid-connected photovoltaic power generation system and a distributed photovoltaic power generation system. The roof photovoltaic system is the most common distributed photovoltaic power generation system, which can be independently arranged on a roof, an open space or other occasions, and can also be connected to a public power grid. The roof photovoltaic system not only provides power for a specific building or area, but also can connect the excess power to the power grid. The roof photovoltaic system generally comprises a photovoltaic cell array, a controller, an energy storage device and an inverter combination, and also comprises other additional units such as a monitoring system and a protection circuit to ensure the overall stability of the system.

[0003] The photovoltaic hot spot phenomenon is caused by the attachment of dust, bird droppings and other shielding objects on the surface of the photovoltaic module, which causes the local cell to be shielded and generates a hot spot. If the hot spot temperature is too high, it may cause damage to the module and even cause a fire. It is a common fault that occurs on the roof photovoltaic system and needs to be checked regularly.

[0004] At present, the roof photovoltaic system on the market is generally monitored manually by a remote camera, which is time-consuming and laborious. With the progress of technology, more and more intelligent monitoring systems have appeared. For example, a photovoltaic device monitoring system is disclosed in Chinese Patent No. CN115765624A, published on October 22, 2022, which comprises a voltage monitoring unit, a hot spot monitoring unit, a power monitoring unit, an image acquisition unit and a control unit. The voltage monitoring unit is connected to the photovoltaic module for monitoring the voltage of the photovoltaic module. The hot spot monitoring unit is used to monitor the hot spot failure of the photovoltaic module. The power monitoring unit is connected to the photovoltaic module for monitoring the power generation of the photovoltaic module. The image acquisition unit is used to acquire images of the photovoltaic module and the environment around the photovoltaic module. The control unit is in communication connection with the voltage monitoring unit, the hot spot monitoring unit, the power monitoring unit and the image acquisition unit.

[0005] The application monitors the voltage and power of the photovoltaic module, monitors the hot spot failure of the photovoltaic module through the hot spot monitoring unit, and analyzes and compares the received data through the control unit. When the voltage and power of the photovoltaic module are abnormal or a hot spot failure occurs, a warning signal is generated. In addition, a cleaning unit is provided to avoid the problem that the photovoltaic device cannot perform accident warning in the prior art, which easily leads to large-scale shutdown of the photovoltaic device. However, the inventor believes that the cleaning unit in the application has a complex structure and is inconvenient to use. Therefore, it is necessary to design a roof photovoltaic system that is convenient to use. CONTENT OF THE UTILITY MODEL

[0006] The application provides a roof photovoltaic system which is convenient to use.

[0007] The application provides a roof photovoltaic system which adopts the technical scheme as follows:

[0008] The roof photovoltaic system comprises a controller and a power generation module and an energy storage module electrically connected with the controller, the power generation module is electrically connected with the energy storage module, a monitoring module is arranged on the side surface of the power generation module, an inverter is connected to the energy storage module, and a load is connected or the national power grid is connected through the inverter, the monitoring module comprises a visual monitoring unit, a dust monitoring unit, a temperature and humidity monitoring unit and an infrared monitoring unit, a cleaning module is arranged on the power generation module and corresponds to the power generation module in one-to-one mode, the cleaning module is electrically connected with the controller, a marking module and an alarm module are further connected to the controller, the marking module is electrically connected with the cleaning module, and the alarm module comprises a short-circuit alarm circuit and a manual alarm switch.

[0009] Preferably, the controller is a CPU microprocessor, the power generation module is composed of multiple groups of solar cell panels connected in series and in parallel, the energy storage module is composed of multiple groups of lithium cells connected in series and in parallel, and after the cleaning module operates, the controller controls the marking module to mark according to the signal of the monitoring module.

[0010] Preferably, the visual monitoring unit comprises a remote monitor and a display, the dust monitoring unit is an optical dust sensor, the temperature and humidity monitoring unit comprises a temperature sensor and a hygrometer, and the infrared monitoring unit is an infrared monitoring camera.

[0011] Preferably, the cleaning module comprises an electric push rod, the electric push rod is arranged below the solar cell panel and is arranged along the width direction of the power generation module, a connecting rod is arranged on the output end of the electric push rod, a cleaning rod is rotatably connected to the connecting rod, a cleaning brush is arranged on one side of the cleaning rod close to the solar cell panel, and the cleaning brush is a sponge or a soft brush.

[0012] Preferably, the connecting rod is a vertical rod, the end of the connecting rod is movably connected with the cleaning rod, the cleaning rod is arranged obliquely, and the length of the cleaning rod is greater than the height of the power generation module.

[0013] Preferably, a plurality of water spraying holes are uniformly arranged on the cleaning rod, a water tank is arranged on the side surface of the power generation module, a water pipe connected with the water spraying holes and a water supply pump are arranged in the water tank, and the water supply pump is electrically connected with the controller.

[0014] Preferably, the numbers of different electric push rods in the cleaning module are different, and the marking module can mark the electric push rods according to the signal of the monitoring module.

[0015] Preferably, the cleaning module is electrically connected with a manual switch.

[0016] To sum up, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The present application sets up a monitoring module, and a cleaning module is connected to the controller, wherein the monitoring module includes a visual monitoring unit, a dust monitoring unit, a temperature and humidity monitoring unit, and an infrared monitoring unit, which can comprehensively monitor the power generation module in multiple dimensions. The visual monitoring unit is for manual monitoring, the dust monitoring unit can detect air dust, and the temperature and humidity monitoring unit can detect the temperature of the light-emitting module and the air humidity. The cleaning module is controlled to clean regularly to ensure the cleanliness of the surface of the power generation module. The infrared monitoring unit can take infrared photos of the light-emitting module to determine whether there is a hot spot on the light-emitting module. The controller controls the cleaning module to clean the light-emitting module to avoid the influence of the hot spot on the power generation efficiency. The marking module is electrically connected with the cleaning module, and the marking module can mark the cleaning module, so as to correspondingly mark the power generation module with a hot spot, which is convenient for regular maintenance by the staff.

[0018] 2. By setting the controller, the monitoring module, and the cleaning module, the cleaning module can be controlled to clean the power generation module according to the information of the monitoring module, and the power generation module with a hot spot can be cleaned in time to ensure the power generation efficiency. Meanwhile, the controller can determine whether there is a hot spot on the power generation module according to the signal of the monitoring module after the action of the cleaning module, and the marking module can mark the power generation module with a hot spot after cleaning, which is convenient for finding and positioning during maintenance.

[0019] 3. By setting the dust monitoring unit and the temperature and humidity monitoring unit, the cleaning frequency of the cleaning module can be adjusted according to the degree of dust raising and the rainwater condition to ensure the cleaning effect.

[0020] 4. By setting the electric push rod below the solar cell panel, the connecting rod can be driven to move horizontally to ensure the cleaning effect of the cleaning rod. The cleaning rod is rotationally connected with the connecting rod, and the length of the cleaning rod is greater than the height of the solar cell panel, so that the whole can be cleaned. In combination with the water spraying hole arranged on the cleaning rod and the water tank on the side, water can be sprayed for cleaning to ensure the cleaning effect. By setting the manual switch on the cleaning module, manual control is facilitated, which is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of a roof photovoltaic system in a preferred embodiment of the present application.

[0022] Figure 2 is a structural schematic view of a power generation module in a preferred embodiment of the present application.

[0023] Figure 3 is a perspective view of a cleaning module in a preferred embodiment of the present application.

[0024] Figure 4 is a side view of the cleaning module in the preferred embodiment of the application.

[0025] Explanation of reference signs: 1, controller; 2, power generation module; 201, solar panel; 3, energy storage module; 4, monitoring module; 401, visual monitoring unit; 402, dust monitoring unit; 403, temperature and humidity monitoring unit; 404, infrared monitoring unit; 5, inverter; 6, cleaning module; 601, electric push rod; 602, connecting rod; 603, cleaning rod; 7, marking module; 8, alarm module. DETAILED DESCRIPTION

[0026] The application will be further described in detail below with reference to the accompanying drawings.

[0027] The embodiments of the application disclose a roof photovoltaic system.

[0028] Reference Figure 1 A roof photovoltaic system comprises a controller 1 and a power generation module 2 and an energy storage module 3 electrically connected with the controller 1, the power generation module 2 is electrically connected with the energy storage module 3, a monitoring module 4 is arranged on the side of the power generation module 2, specifically, the controller 1 is a CPU microprocessor, the power generation module 2 is composed of multiple groups of solar panels 201 in series and parallel connection, the energy storage module 3 is composed of multiple groups of lithium cells in series connection; the energy storage module 3 is connected with an inverter 5 and connects a load or is connected into a national power grid through the inverter 5, the monitoring module 4 comprises a visual monitoring unit 401, a dust monitoring unit 402, a temperature and humidity monitoring unit 403 and an infrared monitoring unit 404, the visual monitoring unit 401 comprises a remote monitor and a display, the dust monitoring unit 402 is a laser dust sensor PM2.5-DL0001, the temperature and humidity monitoring unit 403 comprises a temperature sensor and a hygrometer, the temperature sensor is a storage temperature acquisition wire harness DHT11 arranged on the back plate of the power generation module, the hygrometer is arranged on the side of the power generation module 2 and is used for collecting air humidity; the infrared monitoring unit 404 is an infrared monitoring camera; the power generation module 2 is provided with a cleaning module 6, the cleaning module 6 is electrically connected with the controller 1, the controller 1 is further connected with a marking module 7 and an alarm module 8, the marking module 7 is electrically connected with the cleaning module 6, the alarm module 8 comprises a short-circuit alarm circuit and a manual alarm switch, after the cleaning module 6 is actuated, the controller 1 controls the marking module 7 to mark according to the signal of the monitoring module 4.

[0029] Reference Figures 2 to 4The cleaning module 6 comprises an electric push rod 601 arranged below the solar cell panel 201 and arranged along the width direction of the power generation module 2, a connecting rod 602 is arranged on the output end of the electric push rod 601, a cleaning rod 603 is rotatably connected to the connecting rod 602, a cleaning brush is arranged on one side of the cleaning rod 603 close to the solar cell panel 201, the cleaning brush is a sponge or a soft brush, specifically, the cleaning brush is a soft brush and the thickness of the cleaning brush is greater than 1 cm in the embodiment; the connecting rod 602 is a vertical rod, the end of the connecting rod 602 is movably connected with the cleaning rod 603, the cleaning rod 603 is arranged obliquely and the length of the cleaning rod 603 is greater than the height of the power generation module 2; a plurality of water spraying holes are uniformly arranged on the cleaning rod 603, the water spraying holes are located on the side of the cleaning rod 603, a water tank is arranged on the side of the power generation module 2, a water pipe connected with the water spraying holes and a water supply pump are arranged in the water tank, the water supply pump is electrically connected with the controller 1, the numbers of the different electric push rods 601 in the cleaning module 6 are different, the marking module 7 can mark the electric push rod 601 according to the signal of the monitoring module 4, and a manual switch is electrically connected to the cleaning module 6,

[0030] The implementation principle is that: by arranging the monitoring module 4 and connecting the cleaning module 6 to the controller 1, the power generation module 2 can be comprehensively monitored in multiple dimensions, the cleaning module 6 is controlled to clean regularly in combination with the dust condition and the temperature and humidity condition, and the cleanliness of the surface of the power generation module 2 is ensured; by arranging the controller 1, the monitoring module 4 and the cleaning module 6, the power generation module 2 can be cleaned by the cleaning module 6 according to the information of the monitoring module 4, the power generation module 2 with hot spots is cleaned in time, the power generation efficiency is ensured, the controller 1 can determine whether the hot spots still exist on the power generation module 2 according to the signal of the monitoring module 4 after the cleaning module 6 acts, the marking module 7 marks the power generation module 2 with hot spots after cleaning, the power generation module 2 with hot spots is found and positioned conveniently during maintenance, the maintenance time is shortened, and the use is facilitated.

[0031] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A rooftop photovoltaic system characterized by: The utility model provides an energy-saving and environmental protection type solar power generation system, including controller (1) and with controller (1) electricity connection's power generation module (2) and energy storage module (3), power generation module (2) with energy storage module (3) electricity connection, the side of power generation module (2) is provided with monitoring module (4), and energy storage module (3) is connected with inverter (5) and is connected load or is incorporated into national power grid through inverter (5), monitoring module (4) includes visual monitoring unit (401), dust monitoring unit (402), temperature and humidity monitoring unit (403) and infrared monitoring unit (404), the power generation module (2) is provided with cleaning module (6) and cleaning module (6) with power generation module (2) one to one correspondence, and cleaning module (6) is electrically connected with the controller (1), and the controller (1) is further connected with marking module (7) and alarm module (8), the marking module (7) is electrically connected with the cleaning module (6), and the alarm module (8) includes short circuit alarm circuit and manual alarm switch.

2. A rooftop photovoltaic system according to claim 1, wherein: The controller (1) is a CPU microprocessor, the power generation module (2) is composed of a plurality of solar cell panels (201) in series and parallel connection, the energy storage module (3) is composed of a plurality of lithium battery cells in series and parallel connection, after the cleaning module (6) acts, the controller (1) controls the marking module (7) to mark according to the signal of the monitoring module (4).

3. A rooftop photovoltaic system according to claim 1, wherein: The visual monitoring unit (401) includes a remote monitor and a display, the dust monitoring unit (402) is an optical dust sensor, the temperature and humidity monitoring unit (403) includes a temperature sensor and a hygrometer, and the infrared monitoring unit (404) is an infrared monitoring camera.

4. A rooftop photovoltaic system according to claim 2, wherein: The cleaning module (6) includes an electric push rod (601), the electric push rod (601) is arranged below the solar cell panel (201) and is arranged along the width direction of the power generation module (2), a connecting rod (602) is arranged on the output end of the electric push rod (601), a cleaning rod (603) is rotatably connected to the connecting rod (602), a cleaning brush is arranged on one side of the cleaning rod (603) close to the solar cell panel (201), and the cleaning brush is a sponge or a soft brush.

5. A rooftop photovoltaic system according to claim 4, wherein: The connecting rod (602) is a vertical rod, the end of the connecting rod (602) is movably connected to the cleaning rod (603), and the cleaning rod (603) is arranged obliquely and has a length greater than the height of the power generation module (2).

6. A rooftop photovoltaic system according to claim 4, wherein: A plurality of water spraying holes are uniformly arranged on the cleaning rod (603), a water tank is arranged on the side of the power generation module (2), a water pipe connected to the water spraying holes and a water supply pump are arranged in the water tank, and the water supply pump is electrically connected to the controller (1).

7. A rooftop photovoltaic system according to claim 4, wherein: The numbers of different electric push rods (601) in the cleaning module (6) are different, and the marking module (7) can mark the electric push rods (601) according to the signal of the monitoring module (4).

8. A rooftop photovoltaic system according to claim 4, wherein: A manual switch is electrically connected to the cleaning module (6).

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