Solar street lights that have become 'potential stocks'

1.1 Introduction to the basic composition of the system The system consists of solar cell components (including brackets), LED lamp heads, control boxes (with controllers, batteries) and light poles; the solar panel light efficiency reaches 127Wp/m2, with high efficiency, It is very beneficial to the wind-resistant design of the system; the lamp head part uses 1W white LEDs and 1W yellow LEDs integrated on the printed circuit board and arranged in a dot matrix with a certain spacing as a plane light source. The control box body is made of stainless steel, which is beautiful and durable; maintenance-free lead-acid batteries and charge and discharge controllers are placed in the control box. 1.2 Introduction to the working principle The solar cell solar cell panel made by the principle of photovoltaic effect receives solar radiation energy and converts it into electrical energy for output, which is stored in the battery through the charge and discharge controller. At night, when the illuminance is gradually reduced to about 10lux, the solar cell panel is open circuited The voltage is about 4.5V, the charge and discharge controller detects this voltage value and acts, and the battery discharges the lamp head. After the battery has been discharged for 8.5 hours, the charge and discharge controller will act and the battery will be discharged. The main function of the charge and discharge controller is to protect the battery. 2. System design idea Compared with general solar lighting, the design of solar street lights has the same basic principle, but there are more links to be considered. 2.1 Battery selection The calculation of battery design capacity is simpler than the peak wattage of solar modules. According to the above calculation, the daily power consumption of the load is 12.2AH. When the battery is fully charged, it can work continuously for 7 cloudy and rainy days, plus the first night of work, the battery capacity: 12.2×(7+1)u003d97.6(AH), two 12V100AH u200bu200bbatteries can meet the requirements . 2.2 Solar cell module bracket 2.3.1 Tilt angle design In order to make the solar cell module receive as much solar radiation as possible in one year, we need to choose an optimal inclination angle for the solar cell module. 2.3.2 Wind-resistant design In the solar street light system, a structural issue that needs to be paid great attention is the wind-resistant design. The wind resistance design is mainly divided into two parts, one is the wind resistance design of the battery module bracket, and the other is the wind resistance design of the light pole. 2.4 Controller The main function of the solar charge and discharge controller is to protect the battery. The basic functions must have overcharge protection, overdischarge protection, light control, time control and anti-reverse connection. In the selection of devices, there are currently single-chip microcomputers and comparators. There are many schemes, each with its own characteristics and advantages. The corresponding scheme should be selected according to the needs and characteristics of the customer group, which will not be described in detail here. 2.5 Surface treatment This series of products adopts new electrostatic coating technology, mainly FP professional building materials coatings, which can meet customers' requirements for product surface color and environment coordination. Suitable for any climatic environment. The processing technology is designed to be coated on the basis of hot-dip galvanizing, which greatly improves the product performance and meets the most stringent requirements of AAMA2605.2005. Other indicators have reached or exceeded the relevant requirements of GB. 3. Conclusion The overall design basically takes into account all aspects; the selection design of the peak wattage of photovoltaic modules and the selection of battery capacity use the most common design method at present, and the design idea is relatively scientific; the wind resistance design starts from the battery module bracket and lamp. The two poles have been analyzed, and the analysis is more comprehensive; the surface treatment adopts the most advanced technology at present; the overall structure of the street lamp is simple and beautiful; the actual operation proves that the matching between each link is good. Company: Shanghai CHZ Changhui Lighting Technology Co., Ltd. Website: www.chz-lighting.com