Why don't the street lights turn on after dark?
LED street lights provide lighting and safety guarantee for people traveling at night. LED street lamp manufacturers are a kind of solid-state cold light source, which has the characteristics of environmental protection, no pollution, low power consumption, high luminous efficiency, and long life. Therefore, LED street lamps will become the choice for energy-saving road lighting. LED street light is a kind of high-efficiency solid-state light source formed by semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, the holes injected into the P zone and the electrons injected into the N zone are in After being diffused to the active area, photons are emitted through radiation recombination, which directly converts electrical energy into light energy. The government really serves the people, and the people are very satisfied. LED street light is a kind of high-efficiency solid-state light source formed by semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, the holes injected into the P zone and the electrons injected into the N zone are in After being diffused to the active area, photons are emitted through radiation recombination, which directly converts electrical energy into light energy. But after a while, I found that the lights at night were not as bright as usual, so I quickly reported the situation to the relevant person in charge, and the relevant person in charge quickly contacted the LED street light manufacturer. The manufacturer replied that it may be due to the following reasons that the lights cannot be turned on after dark.
One, voltage
The controller shows that the battery is under pressure and cannot be illuminated after dark, but the battery voltage has exceeded this point under the pressure value, indicating that the battery has been charged. In a 12v system, the lower voltage protection value is about 11.1v (the default value of the controller). After the battery drops to this voltage point, the controller will turn off the power, stop discharging, and protect the battery but release it.
reason
The solar panel charges the battery during the day and charges the voltage to 12V (the default value of the controller) before continuing to discharge to prevent the battery from being damaged by deep discharge for a long time. Then, after the battery is under-voltage, if the controller does not restart, 11.1 or 12V is under-voltage state, you must wait for the battery to recharge to 12V, and then continue to discharge.
Solution
It is sufficient to use solar panels or a DC charger to charge the battery voltage to 12V or higher.
2. Controller
If the LED street light has been installed and can be turned on normally for a period of time, the controller is out of order. The reason for the damage of the controller is that the system is subjected to strong electric shocks, such as direct lightning strikes or short circuits, or the internal electronic components of the controller may be damaged.
Solution
Replace the controller, test the controller, and check the response of the indicator light. If neither indicator light is on, the controller will be damaged and must be replaced.
3. The LED light source is driven by DC power supply.
The indicator light of the detection controller shows normal discharge and the battery voltage is sufficient, that is, the light is off. At this time, the positive and negative poles of the lamp should be directly connected to the positive and negative poles of the battery. If it cannot be discharged, the DC power supply of the LED light source will be damaged. Need to be replaced. Now the LED light source DC power driver is integrated with the controller in the aluminum box. Installation and maintenance are simpler and more convenient. If a component is damaged, it can be replaced directly.
The first thing that customers think of when they encounter problems is to complain to the LED street light manufacturer. In fact, if you buy products from regular manufacturers, don't worry about quality issues. The main reasons for these problems are environmental factors and improper use. Just contact the LED street light manufacturer to solve the problem in time. These are just examples of solving some common problems. If you have other questions, you can directly contact the LED street light manufacturer.
Benwei Solar Street Lights Outdoor Lamp
Product Features:
>LED light, solar panel, lithium battery and controller,all in one compact design.
>No wiring,100% solar powered ,easy to install and ship.
>Built-in infrared sensor, can adjust the light output automatically(time control + light sensor control+ motion sensor control).
>Rust-proof, dustproof and waterproof IP65.
>5 years warranty.
