Do solar street lights have to be illuminated by the sun to glow?

Solar street lights do not have to be illuminated by the sun to emit light.
Description of the working principle of the solar street light: During the daytime, the solar street light is under the control of the intelligent controller. The solar panel absorbs the solar light and converts it into electrical energy after being irradiated by sunlight. The light source is powered to realize the lighting function.
The DC controller can ensure that the battery pack is not damaged due to overcharge or overdischarge, and has functions such as light control, time control, temperature compensation, lightning protection, and reverse polarity protection. The solar street light system can guarantee normal operation in rainy weather for more than 15 days.
Its system composition is composed of LED light source (including drive), solar panel, battery (including battery incubator), solar street light controller, street light pole (including foundation) and auxiliary materials and wires.

By the way, add the installation and maintenance costs of solar street lights

The operation and maintenance cost of solar street lights is low. The solar power supply used by solar street lights has almost zero operating cost, except that conversion to commercial power supply in cloudy and rainy days will generate a small part of the electricity cost. The operation of the entire system is automatically controlled without human intervention, and almost no maintenance costs are incurred.

With the continuous expansion of urban construction, many remote areas also have street lights and other equipment. At that time, in those small and remote places, if there is a problem in the power generation or transmission, the maintenance cost will be very high, not to mention the near future. Street lights have only become popular in a few years, so we can often see that street lights on rural roads are always turned on very sparingly.

Now this kind of solar street light only needs to be inspected within a fixed time. You can refer to “The work items to be checked after the installation of solar street lights”. Maintenance is a rare thing, and compared with ordinary street lights, the maintenance cost of solar street lights Very cheap.