It consists of the following parts: ,, battery pack, light source, light pole and lamp housing. If the output power is AC or 110V, an inverter must be configured.

1,:

Solar PanelsSolar Street LightsSolar Street LightsMonocrystalline silicon solar cellsPolycrystalline silicon solar cellsAmorphous silicon solar cellsPolycrystalline silicon solar cellsPolycrystalline silicon solar cellsSingle crystal silicon solar cellsMonocrystalline silicon solar cellsAmorphous silicon solar cellsAmorphous silicon solar cells Solar control Device

Regardless of the size, a charge-discharge controller with good performance is essential. In order to prolong the service life of the battery, its charging and discharging conditions must be restricted to prevent the battery from overcharging and deep charging. In places with large temperature differences, qualified controllers should also have functions. At the same time, it should have street lamp control functions, with light control and time control functions, and should have the automatic load control function at night, which is convenient for extending the working time of street lamps on cloudy and rainy days.

3. Battery

Since the input energy of the solar photovoltaic power generation system is extremely unstable, it is generally necessary to configure a storage battery system to work. Generally, there are lead-acid batteries, Ni-Cd batteries, and Ni-H batteries. The selection of battery capacity generally follows the following principles: First, on the premise that it can meet the lighting at night, store the energy of solar cell components during the day as much as possible, and at the same time, it must be able to store the electrical energy that can meet the lighting needs of continuous rainy days at night. The battery capacity is too small to meet the needs of night lighting. The battery is too large. On the one hand, the battery is always in a state of power loss, which affects the battery life and causes waste at the same time. The storage battery should match the solar battery and the electric load (street lamp). A simple method can be used to determine the relationship between them. The solar cell power must be more than 4 times higher than the load power for the system to work normally. The voltage of the solar cell must exceed the working voltage of the battery by 20~30% to ensure the normal negative charge to the battery. The battery capacity must be more than 6 times higher than the daily consumption of the load.

4. Light source

The light source used by solar street lamps is an important indicator of whether the solar lamps can be used normally. Generally, solar lamps use low-voltage energy-saving lamps, low-pressure sodium lamps, induction lamps, and DLED light sources.

(1) Low-voltage energy-saving lamps: low power, high luminous efficiency, but with a service life of 2000 hours, low-voltage lamps are black, generally suitable for solar lawn lamps and garden lamps.

(2) Low-pressure sodium lamp: The low-pressure sodium lamp has high efficiency (up to 200Lm/w), but an inverter is required. The low-pressure sodium lamp is expensive, and the entire system is high and uses less.

(3) Induction lamp: low power and high luminous efficiency. The lamp is used under normal commercial power conditions of 220V (pure sine wave, frequency 50 Hz), and its lifespan can reach 50,000 hours. The service life on solar lamps is greatly reduced as that of ordinary energy-saving lamps (because solar lamps are all square wave inverters The output frequency, item position, and voltage of the solar power supply 220V are not comparable to ordinary mains).

(4) LED: LED light source, long life, up to 1000000 hours, low working voltage, no inverter, high luminous efficiency, domestic 50 Lm/w, imported 80 Lm/w. As technology advances, the performance of LEDs will be further improved. The author believes that LED as the light source of solar street lights will be a trend.

5. Light pole and lamp housing

The height of the light pole should be determined according to the width of the road, the distance between the lamps, and the illuminance standard of the road. According to our collection of many foreign solar lamp materials, most of the lamps choose energy-saving between beautiful and energy-saving. The appearance of lamps is not demanding, and it is relatively practical.