User-free lithium-ion battery use and life prolonged method

Автор: Iflowpower – Kannettavien voimalaitosten toimittaja

In recent years, drone has slowly entered the Volkswagen's field of view, which is very contemplated, easy to operate, simple structure, has won countless image creative institutions, and even entered ordinary people's home. At present, the mainstream aerial photographic drone is a multi-rotor, straight machine and fixed wing. Their structure determines that the fixed wing can be flying for a long time, but the fixed wing takeoff and the landing requirements are high, and the factors that cannot hover in flight are often Can only be used in the image quality requirements for the image quality.

And the multi-rotator, although the direct flight is short, but can take off and land in complex gear, flight is smooth, can hover, good anti-wind, easy to play, is currently used in image creation, most models. These two models are dominated by the battery, and the direct machine can also supply power with an oil engine, but the mechanical vibration and greater flight risk of the oil have greatly reduced its usage. Thus, the use of batteries is increasingly popular in unmanned aerial photography.

There are more than a dozen batteries equipped with a team, and there are dozens of pieces, they are tirelessly for motors, electric tones, flight control, OSD, and maps. Each power supply of electricity for aircraft such as pass, receiver, remote control, monitors, etc. In order to better, safer flights, we must understand the parameters, use, maintenance, charge and discharge of the battery.

Battery. Nowadays, the total number of lithium ion batteries used in the aerial photography (Li-Polymer, also known as high molecular lithium ion battery), generally referred to as lithium electricity. The lithium polymer battery has a high energy density, smaller, ultra-thin, lightweight, and high safety and low cost, etc.

are a new battery. In shape, the lithium polymer battery has ultra-thin characteristics, which can be combined with various products to produce batteries of any shape and capacity. The outer packaging is aluminum-plastic packaging, which is different from the metal housing of liquid lithium electricity, internal quality hidden danger It can be displayed immediately, such as drumming.

The basic parameters of the battery are taken from the basic parameters of the battery. Take a 22.2v10000mAH aerial photomic lithium battery as an example.

It is made of 6 pieces of rated voltage of 3.7V, and the capacity is 10000mAh lithium battery series, that is, 6S1P. There are also 6S2P batteries, which are constructed of 12 pieces of 5000mAh batteries.

It will be described here that 6S1P is higher than the 6S2P safety factor, because 1P is more simpler than 2P, of course, 1P price is higher. Among the lithium electrical modes, the single-chip voltage 3.7v is the rated voltage, which is obtained from the average operating voltage.

The actual voltage of the single-chip lithium battery is 2.75 ~ 4.2V, and the capacity of lithium-based capacitance is 4.

2V discharge to 2.75V. Lithium battery must be maintained within 2.

75 ~ 4.2V voltage range. If the voltage is less than 2.

75V, it belongs to excessive discharge, and lithium electrical fluid can be expanded. The internal chemical liquid will crystallize, and these crystals may pierce the internal structural layer cause short circuit, and even let the lithium battery change zero. The single-chip voltage is higher than 4.

2V when charging is overcharged. The internal chemical reaction is too fierce. Therefore, it is necessary to use a regular charger that meets the safety standard to charge the battery, and it is strictly forbidden to conduct private modifications to the charger, which may cause very serious consequences! It is also possible to remember that the aircraft power lithium battery cell voltage can not be used to 2.

75V. At this time, the battery can not be supplied to the aircraft effective power, in order to safely, set the single piece alarm voltage to 3.6V, If this voltage is reached, or close to this voltage, the flying will immediately perform the return or landing movement immediately, and prevent the battery due to poor battery voltage.

The discharge capacity of the battery is expressed in a multiple (c), which means that the maximum discharge current can be reached according to the nominal capacity of the battery. Common aerial cells include 15C, 20C, 25C or higher battery. As for the number of c, simply, 1C is different for different capacity batteries.

1C means that the discharge rate of the battery 1C can operate for 1 hour. Example: 10000mAh capacity battery last for 1 hour, then the average current is 10,000mAh, that is, 10A, 10A is 1C of this battery. Then, the battery is marked with 10000mAh25c, then the maximum discharge current is 10A25 = 250a, so that the maximum discharge current is 10A15 = 150a, which can be seen that the aircraft can be used when performing a large dynamic flight.

The moment of power consumption is supplied more current support. Its discharge performance will be better. Of course, the number of C is higher, and the battery price will rise.

Never pay attention to the discharge C number of the battery is discharged here, otherwise the battery may be scrapped or burned. In the battery of the battery, you should stick to six not, the correct way to use is the best way to extend battery life. 1.

However, this is required for the charger. Some chargers are not perfect in the power failure function. They have not stopped charging from 4.

2V. In addition, some charger uses a period of time because components Aging, it is also easy to have a problem that is not stopped. Therefore, it must be seen when the lithium battery is charged.

When it is found that the charging time is too long, it must be manually check whether the charger has failed. If there is a failure, you should unplug the battery as soon as possible. Otherwise, if the lithium poly battery is overcharge, it will affect the battery life.

Also reminded, it must be charged according to the number of charging C, or lower in the battery specified in the battery, and cannot exceed the specified charging current. 2, but the discharge curve of the discharge battery indicates that the voltage drop is faster when the discharge is started, but the discharge is between 3.9 ~ 3.

7V, the voltage drop is not fast. However, once it is reduced to 3.7V, the speed of the voltage will speed up, the control is not good, resulting in over-delivery, light damage, the battery, the voltage is too low, the oil.

Some models have fewer batteries, so they will float each time. This battery is very short. The strategy is, try to fly less, fly a cycle with a life life.

Ning Cai battery is more, do not fly the battery to exceed the capacity limit each time. To make full use of battery alarms, alarm should land as soon as possible. 3, dissatisfied to save the electric battery, can not be filled for more than 3 days, if you don't turn it over more than a week, some batteries can drum directly, some batteries may not be temporary, but several times are preserved, the battery May be scrapped directly.

Therefore, the correct way is that after receiving the flight task, it is recharged, and if there is no flight task within 3 days, please save the single-chip voltage to 3.80 ~ 3.90V.

If there is a mixed electricity, it is not flying because of the various reasons, and it is necessary to discharge the battery to 3.80 ~ 3.90V within 3 days.

If the battery is not used within three months, continue to save the battery charges, so that the battery life can be extended. Battery storage should be placed in a cool environment. When the battery is stored for a long time, it is best to be placed in a sealed bag or sealed in the release box, it is recommended to have a ambient temperature of 10 to 25c, dry, non-corrosive gas.

4, the outer skin that does not damage the outer skin battery is an important structure that prevents battery explosion and leakage. The aluminum-plastic skin damage of lithium poly battery will directly lead to the battery to get fire or explosion. The battery should be lightly put, when the battery is fixed on the plane, the strap should be tight.

Because it is possible to do a big dynamic flight or cutting machine, the battery will take out because it is tipped, which is easy to cause battery skin damage. 5, this situation is not shorted often occurs during maintenance and transportation of battery welding lines. Short-circuit will directly lead to fire or fire explosions.

When it is found that the battery is broken when the battery is used for a while, it is necessary to pay attention to the electric soldering iron, do not contact the positive and negative electrode of the battery. In addition, during the process of transporting the battery, the best way is that no battery is separately set on a self-sealing bag and placed in the explosion-proof box, preventing the positive and negative electrodes of a piece of battery due to bumps and collisions due to bumps and collisions. Other conductive materials short or broken.

6, don't cool this principle, many flying friends will ignore. There is often low temperature weather in the north or high altitude area. At this time, the battery is placed outside, and its discharge performance will be greatly reduced.

If you still have to fly during the normal temperature, then you will have problems. At this point, the alarm voltage should be raised (such as a single-chip alarm voltage to 3.8V), because the pressure drop in the low temperature environment will be very fast, the alarm will immediately land immediately.

There is another way to keep the battery. Before the takeoff, the battery is saved in a warm environment, such as the house, in the car, insulation box, etc. Quickly install the battery when you take off, and perform a flight task.

Try to shorten the time to half of the normal temperature status while flying at low temperature to ensure safe flight. At present, there are many brands and types of aerial model lithium electricity, and according to the electricity of their own models, they can choose the matching battery, so that the smooth operation of each electrical component can be guaranteed. Don't buy some cheap three-free batteries, don't buy the battery, do your battery, don't change the battery.

If the battery drum bag, the skin, the filler is dissatisfied, please stop using it. Although the battery is a consumable, it gives the flight silently supplies energy. We have to take time to pay attention to it, understand it, to protect it, can better, safer to fly the task for each aerial flight.

It can also be thought that since this battery can be placed in the arm, then after the thickness, size and waterproof and dustproof problems will be solved, it is no longer a dream.