What is solar light
The solar-powered lamp is composed of a solar-powered cell module, some LED light, a control box (the control box has a charger, a controller, a battery) and a lamp pole. solar-powered panel light efficiency reaches 127Wp/m2, high efficiency, which is very beneficial to the wind resistance design of the system; The lamp head part uses 1W white LED and 1W yellow LED integrated on the printed circuit board as a lattice with a certain spacing as a plane light source. The control box is made of stainless steel, nice and durable; The control box is equipped with maintenance-free lead-acid battery and a special charging controller for solar-powered street lamp developed by slow pulse fast charging and discharging patented technology. The system uses valve-controlled sealed lead-acid battery, which is also called “maintenance-free battery” because of its little maintenance, which is conducive to reducing system maintenance costs; Charge and discharge controller in the design of a full range of functions (with light control, time control, overcharge protection, over discharge protection and reverse protection, etc.) and cost control, to achieve a high cost performance.
The advantages of Solar-powered light
the use of Solar-powered photovoltaic cells to provide electricity, Solar-powered energy as a green and white new energy, sufficient Solar-powered energy resources to ease the tension of conventional energy has positive significance. The installation of Solar-powered light is simple and convenient, and there is no need to lay a large number of basic projects such as cables to ordinary street light, and only a base is fixed, and all the lines and control parts are square boxes in the lamp frame, forming a whole. The operation and maintenance cost of Solar-powered street lights is low. Solar-powered street lights use Solar-powered power supply, in addition to rainy days to convert to pilot power transfer to generate a small amount of electricity costs, operating costs are almost zero. The entire system is controlled automatically, without human intervention, and almost no maintenance costs.
The disadvantages of solar lamps
Dispersion: Although the total amount of solar radiation reaching the Earth’s surface is large, the energy flux density is very low. On average, near the Tropic of Cancer, when the weather is relatively clear in summer, the irradiance of solar radiation at noon is the largest, and the average solar energy received on an area of 1 square meter perpendicular to the direction of sunlight is about 1,000W; If the day and night are averaged throughout the year, it is only about 200W. In winter, it is only about half, and the cloudy day is generally only about 1/5, so the energy flow density is very low. Therefore, when using solar energy, if you want to get a certain amount of conversion power, you often need a fairly large set of collection and conversion equipment, and the cost is high.
Low efficiency and high cost: some aspects of the development level of solar-powered power utilization are theoretically feasible and technically mature. However, some solar-powered power utilization devices, because of low efficiency and high cost, in general, the economy can not compete with conventional power. For a considerable period of time in the future, the further development of solar-powered power utilization is mainly restricted by economy.
Working principle
During the day, under lamping conditions, the solar-powered cell module generates a certain electromotive force, and forms a solar-powered cell array through the series and parallel of the components, so that the array voltage meets the requirements of the input voltage of the system. The battery is charged through the charge and discharge controller, and the electrical power converted from lamp power is stored. At night, the battery pack provides input power to the inverter. Through the function of the inverter, the direct current is converted into alternating current, which is transmitted to the distribution cabinet. The power is supplied by the switching function of the distribution cabinet. The discharge of the battery pack is controlled by the controller to ensure the normal use of the battery. The photovoltaic power station system should also have a limited load protection box lampning protection device to protect the over-load operation of the system equipment and avoid lampning strikes, and maintain the safe use of the system equipment.
solar-powered lamp system principle: The working principle of the system is simple, the solar-powered cell made of photovoltaic principle during the day the solar-powered panel receives solar-powered radiation and converts it into electrical power output, after the charging and discharging point controller is often in the battery, at night when the illuminance gradually decreases to about 101ux, the solar-powered panel open circuit voltage is about 4.5v, the charge and discharge controller detects this voltage value after action, The battery discharges the guest. After the battery is discharged, the charge controller acts, and the battery discharge ends. The main function of the charge and discharge controller is to protect the battery and extend the service life of the battery.