Role of Controller in LED Solar Street Lamp

Led solar street lamp is a combination of solar panel, controller, light source, battery, etc. The solar power street lamp absorbs the solarlight as energy source and stores the electricity in the battery. Street lighting is an important supporting facility for the municipal government, and now LED solar street lamps have become the primary choice for street lighting projects. Friends who are more attentive should notice that the solar power street lamps will automatically turn on when the sky is dark. That is the controller works.

The solar controller is used in the solar photovoltaic system, its full name is the solar charge and discharge controller, which coordinates the work of solar panels, batteries, and loads. It is a very important component in the photovoltaic system. Make the entire solar photovoltaic system efficient and safe operation. The controller can ensure that the battery pack is not damaged due to overcharging or overdischarging, and has functions such as light control, time control, temperature compensation, lightning protection, and reverse polarity protection. Below, we will introduce several important functions of the LED solar street lamp controller in detail.

1. Control output period

To control the output period, the solar controller can set the time period, and the output current starts to work when the set time period is reached. For example, it can be set to turn on the lights in 3 segments, each for a few hours.

2. Adjust the output power

The controller of LED solar street lamp can also control the brightness of the LED lights by adjusting the power. For example, in the first period, the brightness is 100% for 3 hours, the second period is 50% for 3 hours, and the third period is 30% for 2 hours, which is very energy-saving. It not only meets the lighting needs at night, but also effectively extends the lifespan of the battery and LED lights.

3. Control

The basic function of the solar power street lamp controller is of course the control function. When the solar panel receives sunlight, the voltage of the solar panel reaches the starting voltage, the LED street light will go out, and the solar panel starts to charge the battery. On the contrary, the battery is discharged and the LED street light is on.

4. Stabilizing effect

When solar energy shines on the solar panel, the solar panel will charge the battery. Simultaneously, its voltage is very unstable. If it is directly charged, it may reduce the service life of the battery, and may even cause damage to the battery. The controller has a voltage stabilizing function in it, and can perform constant voltage current limiting on the voltage of the input battery. When the battery is fully charged, it can charge a small part of the current, or not charge it.

5. Boost

The controller of the LED solar street lamp also has a boost function, that is, when the controller can't detect the voltage output. For example, when the battery voltage is 25V, but 40V is needed to reach the normal lighting, the controller will increase the voltage so that the battery voltage can reach the lighting level.

The controller plays a significant role in LED solar street lamps, so when choosing a controller, you must choose a brand solar power street light manufacturer. High-quality controllers can guarantee the normal operation of solar street lights. For regular manufacturers, product quality is guaranteed and there is a complete after-sales system.