The dimensions of this card are 1650 mm x 992 mm x 40 mm.
This size is the standard 660 PV panel size and is suitable for most PV system installations. 660 photovoltaic panels mainly use high-efficiency polycrystalline silicon solar cells as photoelectric conversion components.
Polycrystalline silicon solar cells have the characteristics of high efficiency, strong stability and long life, and are currently one of the most widely used solar cells.
How deep do you have to dig for a 7 meter solar street light?
295*295 mm, 10 W.
Solar cells Conventional ones usually have a structure made of EVA material and the cells located between two layers of glass are heavier and require supports during installation, making them difficult to mover.
Flexible thin-film solar cells do not require glass backsheets or covers and are 80% lighter than double-layer glass solar cell modules. Flexible cells using PVC backsheets and ETFE film covers can even be bent as desired. , easy to carry. No special supports are required during installation and it can be easily installed on the roof or on top of a tent.
Detailed informationPrinciple of energy production
Solar cell is a device that reacts to light and can convert light energy into electricity. There are many types of materials that can produce photovoltaic effects, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, copper selenium indium, etc. Their principles of energy production are basically the same. Today, ifCrystalline silicon is used as an example to describe the photovoltaic power production process. Crystalline P-type silicon is doped with phosphorus to obtain N-type silicon, forming a P-N junction.
When light irradiates the surface of the solar cell, part of the photons are absorbed by the silicon material; the energy of the photons is transferred to the silicon atoms, causing the electrons to transition and become free electrons. accumulate on both sides of the P-N junction to form a potential difference, when the external circuit is connected, under the action of this voltage, a current will flow through the external circuit to produce a certain output power. The essence of this process is as follows: the process of converting photon energy into electrical energy.
Baidu Encyclopedia - Solar panel
Solar panel calculation formula
The street lightSolar is a kind of lighting equipment that uses solar energy to generate electricity. . Provides illumination at night and does not require external power. When installing solar street lights, the solar panels must be buried underground to absorb solar energy and convert it into electrical energy. So, how deep should you dig a pit to install a 7 meter solar street light?
First of all, we need to consider the size and installation angle of the solar panel. Generally speaking, the size of solar panels is 1.6m x 0.9m, and the installation angle is generally 30 degrees. Based on this size and angle, we can calculate the projected area of the solar panel on the ground.
Projected area = solar panel length x solar panel width x cos (installation angle)
= 1.6 m x 0.9 m x cos (30 degrees)
≈ 1.39 square meters
Nexte, we need to consider the installation depth of solar panels. Generally speaking, the installation depth of solar panels should be equal to 2 times its projected area. Therefore, the depth of the pit that needs to be dug for a 7 meter solar street light can be calculated as follows:
Installation depth = projected area x 2
= 1 .39 square meters 78 meters.
It should be noted that the above calculations are only reference values and the actual installation depth may vary depending on specific circumstances. During the actual installation process, underground pipelines, ground conditions and other factors should also be considered to ensure the stable installation and normal operation of the panelssolar. Therefore, when installing solar street lights, it is best to consult professionals for advice and make adjustments according to the actual situation.
Calculation formula: S ring = π (R?-r?), where S ring = surface size of the solar panel, R is the radius of the outer diameter of the solar panel and r is the LCD screen. display.
The power output of solar panels is only related to the area, and the power output has a linear relationship with the area.
Content radius (note: the outer diameter of the LCD screen is 41mm, that is, r is 20.5mm). According to the test data and parameter display provided by the manufacturer, it is necessary to double the surface). after two 5530-8L modules are connected in parallel to meet the current 100uA size requirement. Ring S = π (R?-r?) = 2*55*30, calculated R = 50.21 mm, that is, theouter diameter of the solar panel is 100.5mm.
Detailed information:
Precautions for using solar panels:
< p >1. Check whether the battery board is damaged, find out in time, and replace it in time.2. Check whether the battery board connection wire and ground wire are in good contact and whether they fall off. Check for heat at the junction of the mixing box.
3. Check if the battery panel bracket is loose or broken. Check and remove weeds around panels blocking them.
4. Check whether there is a cover on the battery panel surface, check the battery panel surface for bird droppings, and clean it if necessary.
5. Evaluate the cleanliness of the battery board.
6. In windy weather, key inspections of panels and battery holders should be carried out.
7. On heavy snow days, the battery panels should be cleaned in time to avoid snow and ice on the surface of the battery panels. The temperature of the battery panels must be detected and compared to the ambient temperature. for analysis.
Baidu Encyclopedia - Solar panels