UAV aerial battery maintenance analysis

There are six errors in the use of batteries. Correct use is the best way to extend battery life. 1. However, there are requirements for charging the charger. Some chargers have imperfect power-off function after overflow, which causes the monolithic battery to overflow to 4.2V and has not stopped charging. In addition, some chargers have been used for a period of time because of components Aging is also prone to overflow problems. Therefore, when charging the lithium polymer battery, someone must be looked after. When the charging time is found to be too long, manually check whether the charger is malfunctioning. If there is a malfunction, unplug the battery as soon as possible. Otherwise, if the lithium polymer battery is overcharged, the battery life will be affected at least, and at worst, it will explode and catch fire. In addition, remind everyone that when charging, be sure to charge the battery according to the specified charging C number or a lower C number, and not exceed the specified charging current. 2. However, the discharge curve of the discharged battery states that the voltage drops relatively fast at the beginning of the discharge, but when the discharge reaches between 3.9V and 3.7V, the voltage drops not fast. But once it drops to 3.7V, the voltage drop will speed up. Poor control will lead to over-discharge, which can damage the battery in the slightest, and cause a bomber if the voltage is too low. Some model friends will over-discharge every time they fly because they have fewer batteries. Such batteries are very short-lived. The strategy is to fly one minute as little as possible, and one more cycle of life. It is better to buy two more batteries than to fly the battery to exceed the capacity limit each time. To make full use of the battery alarm, you should land as soon as possible. 3. If you are dissatisfied with the battery, you can’t store it on full charge for more than 3 days. If you don’t let it go for more than a week, some batteries will swell upright, and some batteries may not swell temporarily. May be scrapped straight away. Therefore, the correct way is to charge it after receiving the flight mission. If there is no flight mission within 3 days after the battery is used, please charge the voltage of the single chip to 3.80~3.90V and save it. After being charged, the battery should be discharged to 3.80~3.90V and stored within 3 days after the overflow due to various reasons. If the battery is not used within three months, continue to store the battery after charging and discharging it once to extend the battery life. The battery should be stored in a cool environment. When storing the battery for a long time, it is best to put it in a sealed bag or a sealed explosion box. The recommended ambient temperature is 10~25°C, and it is dry and non-corrosive. 4 , Does not damage the outer skin The outer skin of the battery is an important structure to guard against battery explosion and leakage. The damage of the aluminum-plastic outer skin of the lithium polymer battery will cause the battery to catch fire or explode straight. The battery should be handled gently, and the cable tie should be tightened when fixing the battery on the airplane. Because there is a possibility that the battery will be thrown out due to the tightness of the tie when flying in a big dynamic flight or crashing, which will easily cause damage to the battery skin. 5. No short circuit This situation often occurs during battery welding wire maintenance and transportation. A short circuit will cause the battery to ignite or burst into flames. When you find that the battery is disconnected after a period of use, you need to re-weld the wires, pay special attention to the electric soldering iron not to touch the positive and negative electrodes of the battery at the same time. In addition, in the process of transporting batteries, the best way is to put each battery in a self-sealing bag and place it in an explosion-proof box. Beware that the positive and negative electrodes of a certain battery will be touched at the same time due to bumps and collisions during transportation. Other conductive materials short-circuit or break the skin and short-circuit. 6. The principle of not catching cold is ignored by many flying friends. There are often low temperatures in the north or high altitude areas. At this time, if the battery is left outside for a long time, its discharge performance will be greatly reduced. If you need to fly with the flight time at room temperature, it will definitely cause problems. At this time, the alarm voltage should be increased (for example, the single-chip alarm voltage is adjusted to 3.8V), because the voltage drop will be very fast in a low temperature environment, and the alarm will drop immediately when the alarm sounds. In addition, the battery should be kept in a warm environment before taking off, such as in the house, in the car, in the incubator, etc. To quickly install the battery when taking off, and perform the flight mission. When flying at low temperatures, try to shorten the time to half of normal temperature to ensure safe flight. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.