Sunfree Lighting Limited is a high-tech manufacturer specialized in R&D and production of solar led street light

How to understand how to extend the light emitting diode ( 领导) Street lamp life

by:SUNFREE     2021-01-29
The battery is an important part of LED lights. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. LED lights factory it is a solid cold light source, green pollution-free, less power consumption, high photosynthetic efficiency, long life, therefore, the LED street lamp will become the choice of road lighting energy saving transformation. The battery now divided into lead-acid battery and lithium battery. LED lights factory it is a solid cold light source, green pollution-free, less power consumption, high photosynthetic efficiency, long life, therefore, the LED street lamp will become the choice of road lighting energy saving transformation. Is the function of energy storage battery. LED lights light up the length of time and maintain the number of days on rainy days depends largely on the battery. Therefore, especially important for battery maintenance work. How can we effectively extend the service life of the battery? We should do the following things:
1, prevent overcharge
led street lamp battery life and performance is closely related to the battery internal heat accumulation. Battery internal heat source mainly comes from internal power losses on electrochemical reaction. The product of charging voltage and charging current can easily see that. In the oxidation reaction, float charging flow increase, produce more heat. In constant voltage charging and float charging flow increases with the rise of temperature and, to further raise the temperature. Thermal runaway is a special phenomenon caused by the structure of vrla battery. Thermal runaway often leads to cell dehydration, shell bulge and other serious harm, and seriously cause dead batteries. To prevent overcharge, provide charging voltage should be in strict accordance with the manufacturer's instructions. Now can establish combination power and realize the intelligent management. First of all need to pay attention to is to set up correctly, followed by unauthorized personnel can not arbitrarily change.
2, prevent discharge
depth of discharge and the number of charging and discharging of battery design cycle ( The service life) Are closely related. For example, when the discharge depth is 5 & amp; lt; 笨蛋; GT; , the loop number is 10000. When the discharge depth of 50 & amp; lt; When only 800 cycles. Will lead to excessive discharge the battery is no longer in state, and even scrapped. Different discharge rate has different discharge time and termination voltage, effective capacity is different also, influenced by environmental temperature. And draw the curve of the relevant listed here no longer. The battery is given different manufacturers specifications. Maintenance personnel should pay attention to and strictly according to the monitoring unit of the data set, shall not be arbitrarily changed. Rack power now manufacturers are designed to have battery power function, when the led street light that the battery discharge to the termination voltage set, by monitoring the instruction automatically cut off the battery discharge circuit. More companies consider the monitoring unit can't detect battery termination voltage or for some reason can't send instructions ( Depends on its working power supply) 。 Therefore, the maintenance personnel in the process of inspection, the inspection and maintenance should also pay attention to the reliability of the hardware circuit.
3, insufficient to prevent charging
charge is mainly caused by charging charging voltage is too low or too low. Or frame system.

4, the control environment temperature when the battery temperature, electrolyte activity, battery internal resistance is reduced, float charging flow increase, lead to the conductive component corrosion intensifies, shorten service life. On the contrary, electrolyte activity is abate, battery internal resistance increases, the battery discharge to the load. Ability to be weakened. As a result, it is important to monitor and maintain the temperature of the LED street light and ambient temperature.

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