Maintenance method of uav lithium ion battery

Battery is one of the key factors to ensure the normal takeoff of uav, and how to increase its service life is a question worth pondering by every drone owner.

According to the industry insiders, both the uav battery and the mobile phone battery are lithium batteries, which are the power source of the equipment, and the safety performance requirements are also higher. But again there is a difference between the drone than the phone battery is a significant characteristic, discharge, unmanned aerial vehicle (uav) battery to discharge, in order to meet the using demand of the unmanned aerial vehicle (uav) in different environments, such as aerial, if encounter a strong wind, so need battery can do large current discharge makes the corresponding compensation, ensure the location of the unmanned aerial vehicle (uav). The battery life of drones is relatively short because of different requirements.

Industry insiders also offered some practical Suggestions for lithium battery users:

One, but put

The discharge curve of the battery shows that the voltage drop is fast when the battery is discharged at the beginning, but not fast when the battery is discharged to 3.9-3.7v. However, once the voltage drops to 3.7v, the speed of voltage drop will be accelerated, which will lead to over discharge if the control is not good. In the case of light, the battery will be damaged; in the case of heavy, the voltage will be too low, which will cause explosion. Some model friends because the battery is less, so every time will put, such a battery is very short life. The strategy is to fly as little as one minute for an extra cycle of life, rather than buying two more batteries at a time and flying them beyond their capacity limits. To make full use of the battery alarm, you should land as soon as possible.

Two, but fill

1. Use a special charger. This charger can be lithium ion or lithium polymer charger, the two are very close. Some mobile phone chargers can be used to charge lithium polymer batteries. This won't damage the battery.

2. Accurately set the number of battery cells in the battery pack. For the first few minutes of charging, you'll have to look closely at the charger's display, which shows the number of batteries in the battery pack. If you don't know, you shouldn't charge or use a familiar charger.

3. Charge a new lithium battery pack for the first time, check the voltage of each cell in the battery pack, and do the same for every 10 charges and discharges in the future. This is absolutely necessary because an unbalanced battery pack will burst when the correct number of batteries is selected for charging. If the voltage difference between cells in a battery pack is more than 0.1 volts, you should equalize the voltage of each cell to 4.2 volts. If the voltage difference between the cells exceeds 0.1 volts after each discharge, your battery has malfunctioned and should be replaced.

4. Don't charge without being looked after

5. Use a safe place for charging batteries and chargers.

6. Generally, there is no special instruction from the manufacturer, and the charging current shall not exceed 1C. Batteries that now support large current discharges also support charging at more than 1C. But it will greatly shorten the battery life. It is more cost-effective to buy three batteries to charge alternately than to buy one battery without having to charge it quickly.

Three, dissatisfied with the preservation of electricity

A fully charged battery cannot be kept fully charged for more than 3 days. If the battery is not discharged for more than a week, some batteries will bulge directly. Some batteries may not bulge temporarily, but after several times of full charge storage, the battery may be discarded directly. Therefore, the correct way is to charge the battery after receiving the flight mission. If there is no flight mission within 3 days after using the battery, please charge the monolithic voltage to 3.80~3.90V and save it. If the battery fails to fly due to various reasons after being charged, the battery should be discharged to 3.80~3.90V within 3 days after being charged. If the battery is not used within three months, continue to store the battery after one charge and discharge to extend the battery life. Batteries should be stored in a cool environment, long-term storage battery, best can in sealed bags or sealed box, suggest the environment temperature is 10 ~ 25 ° C, and dry, no corrosive gas.

Do not damage the package

The outer packing of the battery is an important structure to prevent the battery from explosion and leakage fire. The battery should be handled with care, and when fixing the battery on the plane, the strap should be tightened. Because it is possible to do a big dynamic flight or fall machine, the battery will be because the tie belt is not tight and thrown out, which is also easy to cause damage to the battery skin.

Five, no short circuit

This often happens during battery line maintenance and transportation. Short circuits can lead directly to battery fires or explosions. When it is found that the battery is broken after a period of time and needs to be soldered again, it is particularly important to note that the soldering iron should not touch both the positive and negative electrodes of the battery. In addition, in the process of transporting the battery, the best method is that each battery is separately covered with a self-sealing bag and placed in the explosion-proof box, to prevent a short circuit caused by the positive pole and negative pole of a battery encountering other conductive materials at the same time due to turbulence and collision in the process of transportation.

Six, not low temperature

This is a principle that many flyers ignore. In the north or high altitude areas often have low temperature weather, at this time the battery such as long time placed outside, its discharge performance will be greatly reduced, if you have to fly at room temperature when the flight time, it will be a problem. At this time, the alarm voltage should be raised (for example, the monolithic alarm voltage is adjusted to 3.8v), because the voltage drop will be very fast in the low temperature environment, and the alarm will land immediately after it rings. In addition, the battery should be kept in a warm environment, such as inside the house, inside the car and the incubator, before taking off. To take off quickly install the battery, and carry out the flight mission. When flying at low temperature, try to shorten the time to half of the normal temperature to ensure safe flight.

Industry insiders also added that people should not blindly choose when buying uav batteries. They should consider factors such as brand, market heat and performance evaluation, and take all factors into consideration to choose the battery suitable for their uav.

The uav industry is a sunrise industry, and the uav battery industry is also a sunrise industry with a very broad development prospect. Lithium battery in the future development will be more and more suitable for all-around use, safer, more intelligent, and more popular. In the future, shenzhen grepp battery co., ltd. will continue to make great efforts in research and development, combining electronic and battery technology, and vigorously develop products focusing on the TATTU brand, to meet the needs of customers of different types of uav for ordinary batteries and intelligent batteries.

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