Solar street light has its own particularity. It is necessary to ensure that system work

A, solar battery components solar cell components of voltage will decrease with the rising of temperature, due to the influence of high temperature, the voltage loss of about 2 v battery components, and the charging process controller on the pressure drop of the diode 0. 7 v, so choose to 18 v working voltage component. The

a. The solar cell module of solar cell components voltage will reduce with the increase of temperature. Due to the influence of high temperature, the voltage loss of the battery module is about 2 v, the charging process controller on the diode voltage drop to zero. 7V。 So, choose the working voltage of 18 v module. Due to the particularity of solar street lights, solar panels are usually installed on the light pole. For light pole, which is usually more than 5 meters high, and the center of gravity is high. In addition, most of the solar panels are suspended. In order to enhance the capacity of the whole equipment of wind resistance, usually select multiple solar panels to power needed for the formation of components. two Controller controller is the key to a management role in the whole street lamp system components. Its function is to manage the battery. A good controller should according to the characteristics of the accumulator set various key parameters, such as battery overcharge and over discharge points, restore points and charged state discharge control, etc. Choosing a street lamp controller, should pay special attention to the controller to restore the parameters of the connection point. When the battery voltage recovery features, when the battery is in a state of over discharge, cut off the load controller, and battery voltage recovery. If the parameters of the controller in a certain time setting is not correct, the lamp may flicker, shorten the service life of the battery and the light source. Three, battery ( Group) Need to consider when choosing a battery discharge rate of battery capacity, the influence of temperature on the influence of battery capacity and the influence of depth of discharge of battery capacity. Therefore, it is necessary to select the depth of a circular solar battery. When the batteries in parallel, it is necessary to consider the effect of imbalance between a single battery. Usually, the number of parallel group shall not be more than four. The choice of four, the choice of light source is solar street light is the most crucial step. At present, special light source rarely used for solar street light. To reduce the number of limited energy loss, as far as possible choose dc source. At present, the common light source are low-voltage DC energy saving lamps, high frequency electrodeless lamp, sodium lamp and led light source.