High pole lamp manufacturer's design principle analysis of rural solar street lights
High pole light manufacturers All understand the truth. The emergence of solar street lights plays an important role in the construction of new rural roads, which not only illuminates the rural roads but also saves energy. Solar street lights have their special characteristics and need to ensure the stability and reliability of the system work, so special attention should be paid to the design. So, what is the design principle of rural solar street lights?
1. Solar street light controller
The controller is the key component of the entire solar street light system as a manager, its maximum function. It is a comprehensive management of the battery. A good controller should set various key parameter points according to the characteristics of the battery, such as overcharge point, over discharge point, recovery connection point and SOC discharge control of the battery. When selecting the solar street light controller, it is especially necessary to pay attention to the controller to restore the connection point parameters. Since the battery has a voltage self-recovery characteristic, when the battery is in an overdischarge state, the controller cuts off the load, and then the battery voltage is restored, if some controller parameters If the points are not set properly, the lamps may flicker and shorten the life of the battery and the light source.
2, solar cell components
The voltage of the solar cell module will decrease with the increase of temperature. Due to the influence of high temperature, the voltage loss of the battery component is about 2V, and the charging process The diode on the controller has a voltage drop of 0.7V, so choose a component that operates at 18V. Due to the special nature of solar street lamps, solar panels are generally installed on the poles. For streetlight poles, they are generally more than 5 meters, with a high center of gravity, and most of the solar panels are suspended, to enhance the entire equipment. To resist wind, generally choose multiple solar panels to compose the required component power.
3. Selection of light source
The selection of light source is the most important step for solar street lamps. Currently, there are fewer light sources for solar street lamps, in order to reduce the loss of finite energy. The light source should be selected as the DC light source. At present, common light sources include DC energy-saving lamps, high-frequency electrodeless lamps, low-pressure sodium lamps and LED light sources.
4, battery (group)
When selecting a battery, it is necessary to consider the effect of discharge rate on battery capacity, the effect of temperature on battery capacity, and the effect of discharge depth on battery capacity. several aspects. Therefore, we must use a deep cycle solar battery. When the battery is connected in parallel, it is necessary to consider the imbalance between the individual cells. Under normal circumstances, the number of parallel groups should not exceed 4 groups.
The above is about the design principle of rural solar street lights introduced to this, the design of solar street lights needs to be scientific and reasonable, in addition to the above points, you also need to consider the overall structure of the street lights In particular, the calculation of the wind resistance of solar street lamps and the overall aesthetics of street lamps in combination with urban road design. In short, there are many factors affecting the performance of solar street lamps. I will not repeat them. Some people often regard the sunshine time as the peak solar hours when designing the solar street lamp system. In fact, this is not correct. The result of this design will lead to the whole system. Instability. Only by mastering the detailed meteorological resources and conditions of use of the site, and combining the actual experience and optimizing the system design, can ensure that the solar street lamp can work normally.
