How to understand how to extend the life of light-emitting diode (LED) street lights
Batteries are an important part of LED street lights. 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. 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. Batteries are now divided into lead-acid batteries and lithium batteries. 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. The function of the battery is to store energy. The length of time that the LED street light is on and the number of days to maintain a rainy day largely depend on the battery. Therefore, battery maintenance is particularly important. How can we effectively extend the life of the battery? We should do the following:
1, prevent overcharging
The life and performance of led street lamp batteries are closely related to the accumulation of heat generated inside the battery. The heat source inside the battery mainly comes from the power loss of the internal electrochemical reaction. The product of charging voltage and charging current can be simply seen. In the oxidation reaction, the floating charge current increases, generating more heat. During constant voltage charging, the floating charge current increases with the increase of temperature, thereby further increasing the temperature. Thermal runaway is a special phenomenon caused by the structure of the vrla battery. Thermal runaway often causes serious hazards such as battery dehydration, bulging of the casing, and serious battery failure. To prevent overcharging, the charging voltage should be provided in strict accordance with the manufacturer's instructions. It is now possible to build a combined power supply to realize intelligent management. The first thing to note is that the settings must be correct, and secondly, unauthorized personnel cannot change it at will.
2, prevent over-discharge
The depth of discharge is closely related to the number of charges and discharge cycles (service life) designed for the battery. For example, when the discharge depth is 5<lunk;GT;, the number of cycles is 10,000. When the discharge depth is 50<, the number of cycles is only 800. Excessive discharge will cause the battery to no longer be in state or even scrapped. Different discharge rates have different discharge time and termination voltage, and the effective capacity is also different, which is affected by the ambient temperature. Here is no longer listing and drawing related curves. The battery specifications of different manufacturers are given. The maintenance personnel shall pay attention to and strictly follow the relevant data settings of the monitoring unit, and shall not change it at will. Now rack power manufacturers are designed to have battery-powered functions, that is, when the led street lamp battery discharges to a set end voltage, the battery discharge circuit is automatically cut off by monitoring instructions. More manufacturers consider that the monitoring unit cannot detect the end-of-battery voltage or cannot send commands for some reason (depending on its working power supply). Therefore, maintenance personnel should also pay attention to the reliability of these hardware circuits during inspection, inspection and maintenance.
3, prevent insufficient charging
Insufficient charging is mainly caused by too low charging voltage or too low charging. Or a problem with the rack system.
4, control the ambient temperature
When the temperature of the battery rises, the electrolyte activity increases, the internal resistance of the battery decreases, and the floating charge current increases, which leads to intensified corrosion of conductive elements and shortened service life. On the contrary, the electrolyte activity decreases, the internal resistance of the battery increases, and the battery discharges to the load. Ability is weakened. Therefore, it is very necessary to monitor and maintain the temperature and ambient temperature of the LED street lamp.
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>5 years warranty.
