Why do solar street lights shine during the day

Source: Views: 45 2020-06-24 16:39:14

If the solar street light is on during the day, first check the controller. The red light on the controller indicates that it is charging, the red light flashes indicates that the battery is fully charged, and the controller is charging with a small pulse of current. If the connection of the solar panel is not very strong, it will not be able to charge normally. It usually shows that there is a voltage, and the normal open circuit voltage is above 17.5V, but there is no current. This phenomenon is that the battery board line is not connected properly. The troubleshooting method can be directly used to detect the data with the voltage and ammeter after the black electrical cover behind the battery board is opened.

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1: Object cover If the solar panel is covered, it will also lead to the situation that the solar street lamp cannot be used normally, covered by heavy snow, and covered by dust. When these coverings cover the solar panel, the output voltage of the solar panel will be lower than a certain value, and the solar street lamp will be triggered to light.

2: The photoresistor is particularly sensitive to light. When the light intensity is weak, the resistance is large. As the light becomes stronger, the resistance value decreases. You can find a balance point by sliding the rheostat. When the light is strong, the photoresistor value is small. The use of photoresistors has certain disadvantages. Photoresistors have relatively high requirements for installation and are prone to miscontrol in rainy and cloudy days.

3: The solar panel converts sunlight energy into electrical energy. The stronger the light, the weaker the light, and the lower the output light. You can use the output voltage of the battery board as a basis to turn on the street light when the voltage is below a certain level and turn off the street light when the voltage is above a certain level.

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4: The solar street light controller displays the under-voltage status, and the light does not turn on after dark, but the battery voltage has exceeded the under-voltage value, indicating that the battery has power. After the battery drops to this voltage point, the controller turns off the power and stops discharging, mainly to protect the battery from being over-discharged and affecting the subsequent use of the entire device. The charging voltage will continue to discharge only when it is charged to 24V (the default value of the controller). The main purpose of this setting is to avoid the battery from being deeply discharged and damaged. In the case of battery Undervoltage, if the solar street light controller is not restarted, between 22.2 volts and 24 volts are Undervoltage. Only when the battery voltage of the solar street light is charged to more than 24 volts will it continue to discharge.