The power generation energy of lithium-ion LED street lights is solar panels, which are one of the important components in LED street lights. LED street lamp 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 area and the electrons injected into the N area are in After being diffused into 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 the choice of road lighting energy-saving transformation. During the daytime, sunlight shines on solar panels, converting light energy into electrical energy and storing it in lithium batteries, which are then stored in 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 light efficiency, and long life. Therefore, LED street lamps will become the choice of road lighting energy-saving transformation. The battery powers the LED light source of the street light at night. Below, the led street light technician will analyze the main protection modes of lithium battery led street lights for you:
Mode 1. Direct charging protection point voltage:
Direct charging is also called fast charging. This is a fast charge. When the voltage of the lithium battery is low, the lithium battery is usually charged with a high current and relatively Gaodianya battery. However, there is a control point, also called a protection point. The voltage of the direct charge protection point is generally the “super-electric protection point” voltage. When charging, the terminal voltage of the lithium battery cannot be higher than this protection point, otherwise it will cause overcharge and be harmful to the lithium battery.
Mode II, floating charge control point voltage:
Generally, after the equalization is completed, the lithium battery can also be left to stand for a period of time to make its terminal voltage drop naturally. When it drops to the sustaining voltage point, it enters a floating state. Similar to low current charging, the battery voltage is low. Fill it up, fill it at a low point, and then connect it in series to prevent the battery temperature from rising continuously, which is very beneficial for lithium batteries.
Mode 3. Uniform charge control point voltage:
After the direct charging is over, the lithium battery is generally left for a period of time by the charge and discharge controller to make its voltage drop naturally. When it drops to the “recovery voltage” value, it will enter a uniform state of charge. Simultaneous charging, which is “balanced charging”. The filling time should not be too long, usually a few minutes to ten minutes. The time setting is too long and harmful. For a small system with two lithium batteries, neither is important. and so. Generally, led street light controllers are not fully charged and only have two stages.
Mode 4, over-discharge protection termination voltage:
Lithium battery discharge should not be lower than the national standard. Although lithium battery manufacturers have their own protection parameters, in the end they must be closer to national standards.
For safety reasons, the overdischarge protection point voltage of 12V lithium battery is usually artificially added with 0.3V as temperature compensation or zero drift correction of the control circuit, so that the overdischarge protection point voltage of 12V battery is 11.10V, and the overdischarge 24V system GE protection The point voltage is 22.20 volts.
The LED street lamp produced by the LED street lamp manufacturer is equipped with an intelligent control system, which can prevent overcharge and overdischarge, greatly reduce the difficulty of maintenance and effectively extend the battery life. The company specializes in R&D and sales of LED street lamp products, solar photovoltaic power generation panels, LED street lamps and other products. It has many years of production experience and advanced production equipment. The following are solar panel factories, LED street lamp branches, lamp pole branches, and battery branches. Factory, controller branch, quality assurance, reasonable price configuration, purchase LED outdoor lighting, consult the total price of street lights, and the price of solar photovoltaic panels, please click on our online customer service, or call our service hotline: welcome to order!
Post time: Feb-23-2021