Ash removing device for photovoltaic module

Abstract

An ash removing device for a photovoltaic module comprises an upper support, a lower support, a left support rod and a right support rod which are sequentially fixed connected to form a rectangular frame. Ash removing brushes parallel with the left support rod and the right support rod are disposed between the left support rod and the right support rod. An ash removing brush motor for driving the ash removing brushes to rotate is disposed on the lower support. Upper traveling drive wheels and an upper traveling motor for driving the upper traveling drive wheels to rotate and lower travelling drive wheels and a lower traveling motor for driving the lower traveling drive wheels to rotate are respectively disposed on the horizontal plane of the upper support and the horizontal plane of the lower support. A solar panel is disposed above the upper support and used for powering the ash removing brush motor, the upper traveling motor and the lower traveling motor. The ash removing device has the advantages that the solar panel is used for powering all the motors, the ash removing device rotates the ash removing brushes and moves along the lateral frame of the photovoltaic module, and an environment-friendly ash removing effect is achieved.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a dust removal device for a photovoltaic module. [0002] Background technique [0003] Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert sunlight into electrical energy. The key component of this technology is solar cells. Multiple solar cells are packaged and protected in series to form large-area solar cells. Modules, but the solar cell modules used in photovoltaic power plants are installed obliquely and exposed to the air for a long time, which is very easy to cause dust on the surface of the modules, which has seriously affected the power generation efficiency of the modules. When the amount of ash accumulation reaches a certain level, the power generation efficiency drops by even more than 8%. For a 100MWp large-scale ground photovoltaic power station, which is expected to generate 600,000 kWh per day, it will los...

AI Technical Summary

Problems solved by technology

Large quantities of manpower are not readily available in such areas

For a 100MWp photovoltaic power station, more than 400,000 pieces of 250Wp photovoltaic modules need to be installed; considering that a pair of brackets is equipped with multiple modules, the plane area is large, and there is a certain inclination during installation. The height of the top is often higher than 2.5 meters, and the dust on the top is not easy to manually Clean up; the surface of the module is not evenly cleaned, and the hot spot effect caused by it will cause greater damage to the photovoltaic cells

[0006]2. Water flushing: high water consumption; access to clean water is limited (the drought in northwest China is severe, and access to groundwater is restricted by national policies); tap water costs are high

There is a one-time installation fee and maintenance fee for laying water pipes; there is the same site restriction problem for transporting water by car and "cleaning dust on vehicle machinery and equipment" below

[0007]3. Cleaning of vehicle-mounted machinery and equipment: equipment costs are high, and ordinary vehicles cannot pass through sites with desert and hillside conditions; There are certain requirements for strength; if there are vegetation, sprinkler and drip irrigation system, underground direct-buried cables, cable bridges laid in the air, and overhead lines, vehicles entering and leaving will affect them; roads with water after rain and hard snow on roads make it difficult for vehicles to pass

The distance between the moving vehicle and the components on the support needs to be precisely controlled. For the same photovoltaic power station, the distance between the two is likely to be erratic due to terrain fluctuations, and the quality of dust removal cannot be guaranteed.

[0008]4. Do not clean, wait for the rainy and snowy weather, and clean the surface of the module naturally: the weather conditions are unpredictable, and the rainfall in the northwest region itself is small, such as the Zhongwei area in Ningxia with good lighting conditions , the annual average rainfall is only 120mm; the snowy season is mostly concentrated in winter, and the ash accumulated in the other three seasons cannot be cleaned by snow

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