How to extend the life of led street lamp battery
1, to prevent overcharging
The life and performance of the LED street lamp battery are closely related to the accumulation of heat generated in the battery. The heat source inside the battery is mainly used for the power loss of the internal electrochemical reaction, so that the product of the charging voltage and the charging current can be simply observed. LED street light is a high-efficiency solid-state light source formed based on a 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 area and the electrons injected into the N area 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 light efficiency, and long life. Therefore, LED street lamps will become a good choice for energy-saving transformation of road lighting. In the oxygen-reoxygenation reaction, increasing the floating charge flow generates more heat. During constant voltage charging, the floating charge flow increases with the increase in temperature, thereby further increasing the temperature. 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 light efficiency, and long life. Therefore, LED street lamps will become a good choice for energy-saving transformation of road lighting. The thermal runaway phenomenon is a special phenomenon caused by the structure of the valve-controlled sealed battery. Controlled heat often brings serious hazards, such as the loss of the battery, the abdomen of the casing, etc. Serious people will cause the battery to be scrapped. To prevent overcharging means to provide the charging voltage value strictly in accordance with the manufacturer's instructions. Realize the setting of current combined power supply and realize intelligent management. It is important to note that the first is to set rights, and the second is that unauthorized persons cannot make any changes.
2, to prevent insufficient charging
In contrast to overcharging, undercharging is mainly caused by the charging voltage setting being too low or too low. Or there is a problem with the rack system.
3, to prevent over-discharge
The depth of discharge is closely related to the number of charge and discharge cycle (service life) of the battery design. For example, when the discharge depth is 5u0026lt;lunk;GT;, the number of cycles is 10,000. When the discharge depth is 50u0026lt;, the number of cycles is only 800. Excessive discharge will cause the battery to no longer be in good condition 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.
4, control the ambient temperature
When the temperature of the battery rises, the activity of the electrolyte increases, the internal resistance of the battery decreases, the floating charge flow of the battery increases, the corrosion of conductive elements increases, and the service life decreases; on the contrary, the activity of the electrolyte decreases, and the internal resistance of the battery decreases. The resistance increases, and the discharge capacity of the battery to the load decreases. Therefore, it is necessary to monitor and maintain the temperature of light-emitting diode (LED) street lights. The charging voltage must also be temperature compensated to avoid overcharging at high temperatures and overcharging at low temperatures.