How to choose solar street light panels?

We all know that solar panels are an indispensable part of solar street lights. They absorb the light energy of the sun through the controller and convert the battery into electrical energy. Therefore, the length of the lighting time of solar street lights is not only related to the size of the battery, but also the size of the battery. The size also determines the charging capacity for a day. Therefore, the choice of solar street light panels is also very important, so how to choose?

Solar panels must choose appropriate open-circuit voltage and working voltage.

If the PWM solar street light controller is selected and charged at 12V, the open-circuit voltage of the solar panel is generally around 20V, and the operating voltage is generally 17.5V. If charged at 24V, the open-circuit voltage and operating voltage of the solar panel are twice that of 12V.

If the MPPT solar controller is selected, the open-circuit voltage of the solar panel must not exceed the maximum input voltage of the controller.

1. In terms of types, solar panels are divided into the single crystal and polycrystalline.

Monocrystalline silicon solar panels have higher efficiency and less light attenuation but are expensive, and polycrystalline silicon solar panels are relatively inefficient but inexpensive.

2. There are many external dimensions and dimensions of solar panels, and the appropriate size must be determined according to the installation environment of solar street lights. Generally speaking, under the same power, it is more appropriate to choose a smaller size.

The power generation capacity of solar panels is closely related to light intensity, ambient temperature, and installation angle. Changes in each link will affect its power generation effect. Raw materials, battery components generally include battery slices, Eva, backplane, aluminum alloy frame, tempered glass, etc. If low-quality battery slices are used, irregularities will occur, and defects will occur during the lamination process, copper-tin copper The phenomenon of bending and tightening; and bubbles will be generated, which proves that there will still be residual voids in the process of heating and sealing at 160 degrees. Life, including the filling of the frame gaps, is a very important link in the process.

The above selection of solar street light panels is shared here for you. Solar street lights use solar panels to gather sunlight and absorb solar energy in all directions. As long as there is a little light during the day, the panels can capture it and conduct sufficient energy is gathered and the solar energy is converted into electric energy. Once the sun sets, the solar street lights will be turned on in time to illuminate with sufficient brightness, bringing light and safety to people's travel at night.