TATTU Battery-The Magic Weapon of Drone Racing China

In the end of the SHENZHEN international drone exhibition. The Drone Racing China attract attention of many visitors, they are make up of the teams from China, the Netherlands, the United States and so on, they staged a international Drone racing in SHENZHEN, CHINA.

Although the drone racing is still in the primary stage, and a few of rules and technology needs to improve, but it has attracted many UAV hobbyists. Drone racing can fly in the outdoor or indoor, and also put up the glasses, through video transmission system to experience FPV(First Person View) drone racing.
 
Quadcopter in the competition, the fastest speed can reach more than 200 kilometer per hour, combined with various obstacles,lighting effects,etc.,feel so shocked. One of most famous drone racing is Dubai held in 2016, in the event, they prepared as much as $1 million bonuses, and finally the age of 15 British boy won the championship. In March 2016, organized by SHENZHEN association of UAV, joint enterprise, nearly 20 domestic industries established China's first UAV racing league, then began to invite professional referees and drone race team, prepare the UAV racing series.

The drone racing divided into 3 level of knockout,promotion race and finals. There are total of 50 contestants, and about 5000 audiences watched the competition at contest site. Through the fierce competition, in finally, Kunhuang Li and Tao Wang who come from China win the championship and the Second. This drone racing is hold in indoor,and has the complex electromagnetic environment, it's more difficult than outdoor,so crashing can't be avoided. But champion of Kunhuang Li with his superior flying skills, crowned.
In this drone racing China, the champion of Kunhunag Li and the other pilots choose the Tattu FPV battery,it not only the Tattu battery has high profile and favorable comment of rate in the UAV field, but also they test the Tattu lipo battery after the use of trust, so they chose Tattu batteries for this competition.
 
Tattu FPV battery is according to the FPV, they has moderate volume,light weight and high discharge rate. At present,through on average 4 series of lithium battery pack, nominal voltage of 14.8v, the UAV battery capacity most of the 1300mah battery, and lipo battey discharge rate around 75c, using professional 5A battery charger for about 20 minutes. Of course,there are some pilots commonly use the capacity of battery,such as1800mah,1550mah and 1050mah battery.

In the competition, the pilots of the psychological and flight skills is important, but also the performance of battery is good or bad is also very important.

Why Such a Short Time of RC Lipo Battery

The RC lipo battery has a limited life, like as human, cars. Under normal circumstances, RC lipo battery after about 200 times the charge and discharge of storage capacity to the discharge will be significantly decreased, use time is also lower. How to use the 200 times charge-discharge? Or how to extend the battery lifespan? Let's to listen the battery expert's recommend.

At first, charge the highest voltage of 4.20v

It's known to all, 4.20v is always the highest voltage of lipo battery, but with the development of technology and improvement. At present, most of manufacturers of lipo battery can be safe to reach 4.25v, even more of the top technology manufacturers can achieve 4.30v, so 4.30v is the highest voltage at current technology.

Model airplane with lipo battery charger are basic set voltage 4.20v, so use charger of voltage 4.20v to charge the lipo battery is OK, but if you raise the highest voltage to charge (such as 4.35v), they will irreversible damage the lipo battery.

At second, discharge the lowest voltage of 2.75v

Maybe many hobbyists have some questions, why? After research, every RC lipo battery has stage of voltage test from 4.20v to 2.75v. No matter from the battery internal structure theory of data, or from the battery discharge measurement, the lowest voltage is 2.75v.
Remind the important thing to hobbyists,at first tell you the roughly of the battery voltage contrast parameters:

2.75V approximately equal to 0%; 3.56V approximately equal to 5%; 3.70V approximately equal to 10%; 3.75V approximately equal to 20%; 3.85V approximately equal to 50%.
If not do scientific research and the battery with high resolution, the above data can be treated as a standard data. If there couldn't find the same leaves in the world, and also couldn't find two pieces of the same parameters of batteries, only the parameters of similar. So more than the contrast of voltage and power relations we only use symbols to represent "approximately equal to".

From the above battery voltage compare relations you can know, when the battery voltage to 3.56v is only 5% of the electricity, the 5% of the electricity control isn't good, it's easy to reach 0% of the limit value, more than the limit, the battery bilge gas immediately.

At third, within 1c charge current to the RC Lipo battery without injure. 5c charging isn't recommend

Battery charging is a process of converts electrical energy into chemical energy, is a chemical reaction. The chemical reaction has considerable relationship with temperature and pressure. The earliest lithium battery only lithium and manganese substances, the reaction procedure for Li+MnO2=LiMnO2 is REDOX reaction.

Why the cheap RC battery pack has the using lifespan?

According to the experimental data and theoretical prove, within 1c charge current to the battery without injure. More than 2c current will cause the capacity declined slight, and then up to the 5c current, the capacity obvious reduction.
The mainly reason of capacity reduction is the battery internal material generated crystal lead to chemicals. So we use the 1c current to charge is benefits the RC lipo battery.

Source: http://www.genstattu.com/blog/why-such-a-short-time-of-rc-lipo-battery/

the main difference between lipo and NIMH battery

Ni-mh batteries A nickel Cmetal hydride battery, abbreviated NiMH or Ni CMH, is usually a variety of rechargeable battery. The chemical reaction on the constructive electrode is similar to that from the nickel Ccadmium cell (NiCd), with each using nickel oxyhydroxide (NiOOH). Even so, the damaging electrodes use a hydrogen-absorbing alloy as a substitute of cadmium. A NiMH battery can have 2 to 3 times the capacity of an equivalent size NiCd, and its energy density can approach that of a lithium-ion battery. Lipo batteries A lithium polymer battery, or far more properly lithium-ion polymer battery (abbreviated variously as LiPo, LIP, Li-poly and others), is usually a rechargeable battery of lithium-ion technologies inside a pouch format. As opposed to cylindrical and prismatic cells, LiPos are available in a soft bundle or pouch, which tends to make them lighter but additionally less rigid.
The designation "lithium polymer" has brought about confusion amongst battery customers because it may be interpreted in two ways. Originally, "lithium polymer" represented a producing technological innovation making use of a polymer electrolyte instead of the more frequent liquid electrolyte. The result is actually a "plastic" cell, which theoretically could be thin, versatile, and produced in different shapes, devoid of danger of electrolyte leakage. The technological innovation hasn't been fully created and commercialized and research is ongoing.
The second which means appeared soon after some companies applied the "polymer" designation to lithium-ion cells contained inside a non-rigid pouch format. That is now one of the most common use, through which "polymer" refers extra to a "polymer casing" (that is certainly, the soft, external container) rather then a "polymer electrolyte". When the design and style is often flat, and light-weight, it is not genuinely a polymer cell, due to the fact the electrolyte continues to be in liquid form, despite the fact that it might be "plasticized" or "gelled" by means of a polymer additive.These cells are often designated as "Lipo 7.4v 5000mah"; nonetheless, from a technological viewpoint, they are really exactly the same since the ones marketed just as "Li-ion", since the underlying electrochemistry may be the exact same.

1. Bodyweight

In each cell from the battery voltage , the NiMH is 1.2V, whilst the lithium battery 3.6V, lithium battery voltage is its three fold. The same style of lithium battery weighs lighter compared to the nickel-metal hydride batteries . We are able to see that every distinct weight battery itself , but because of 3.6V lithium battery substantial voltage, once the output voltage of the same to ensure that just one battery pack can lower the number of third leaving right after forming the battery weight and volume reduction .

2. Memory effect

NiMH batteries have memory result . Therefore, common discharge management can also be needed. This periodic discharge management belongs towards the fuzzy state to become taken care of , even some with no the best information discharge ( or perhaps a number of instances each and every discharge right after discharge are due to distinctive providers differ ) this cumbersome discharge management when applying NiMH batteries can't be avoided . Relative lithium batteries mainly because no memory result, inside a pretty effortless and basic to make use of . It is actually fully with out regard to simply how much residual voltage , direct is often charged , the charging time can be reduced naturally .

3. Self-discharge charge

NiMH batteries from 25 to 35% ( January ) , lithium batteries from 2 to 5% ( May possibly ) . Thereby obtained , the price of self-discharge NiMH batteries a lot increased than lithium .

4.Charging

Nickel-metal hydride batteries and lithium batteries can't overcharge resistance . As a result, the nickel-metal hydride battery frequent current charging PICKCUT control mode on the highest charging voltage , charging stops carry on because the greatest way of charging . The 7.4v lipo battery utilizing continual existing, continuous voltage charging mode is most effective.

5. Application

NiMH batteries: buyer electronic merchandise, remote management toys , hybrid vehicles , renewable energy programs; Lithium Battery: cell phones, laptops, energy tools, electric autos, backup electrical power lights , small home appliances.

what is a quadcopter and to understand the other aircrafts

what is a quadcopter?

Quadcopters are also called multirotors, due to them having 4 or more small rotors instead of one like the traditional helicopter. Some models have more than 4 rotors and are called multirotors. As a general rule, the more rotors a drone has, the stronger and more stable it becomes. This why the more high end professional photography drones have 6 to 8 rotors, but these units are currently thousands of dollars.

How to define aircrafts?

You can find two mostly facets, the definition from the element is the number of the motor, it defines the number of rotor how much N; 2 it truly is rack wing (axis) M, the quantity of that defines the aircraft is M shaft aircraft. We normally of a spacecraft termed M axis N propeller aircraft.

About Tricopter(3-motor)

Tricopter normally has two axis during the plane forward, a shaft within the negative. So your body must seems like T or Y sort. Unfavorable motor modify plane by the rotation in the fixed on the course , tricopter is superior manage, ordinarily also rise quicker, but not drastically. Obviously, when the motor stops operation, so the plane will crash, but this type of model is relatively agile.

About Quadcopter(4-motor)

Quadcopter weight in excess of a tricopter, have been also additional possible to kind, as the quadcopter will not ought to separate to manage the parameters of single motor. They are more secure, along with the flying time is longer,you can carry a high capacity and longer battery,such as Gens ace&Tattu 10000mah battery , quadcopter by reducing the velocity of your two motor to implement the roll, as well as the other two motor can handle the entire from the aircraft.
QuadcopterX(QuadX) or quadcopter (Quad ) has distinctive wingspan, helps make the plane seems to be like an X or maybe.

About Hexcopter and Octocopter(6-moter and 8-moter)

The fundamental design of hexcopter and octocopter are very same. Rotor organized around a central point right into a round shape. There are some model install the rotor in the top rated. Y variety hexcopter looks like a tricopter, but no one in which the parameters with the rotor independent handle. To the contrary, yaw is similar for the four rotor aircraft, by altering the velocity of the motor. Compared with all the independent style and design yaw rotor, such design and style feeling not sensitive in contrast with independent yaw.
Much more rotor enables the vehicle to load better and more secure. Underneath the control on the rotor a lot more aircraft in flight controllers, when one particular or extra on the motor power, still can continue to keep the capability to fly without having crashing. But not surprisingly the total weight of aircraft and its complexity of building and is proportional to your price, along with the number of rotor also need many power supply,also will need more 2s 7.4v Lipo battery to carry.
As a beginner, quadcopter seems to be one of the best introduction to the model. They are easy to set up, and the flight is very stable. But when you start, it is better to ensure that the following two points: as simple as possible, the lighter weight, the better.

Drone Competition is Growing as a High Energy Sport

It was reported by the Wall Street Journal last year that the US billionaire, boss of the team Miami Dolphins , Stephen Ross has invested the Drone Racing League. He invested $1million through his investment company RSE Ventures. The industries of UAV have raised a question when the news came out: Is UAV contest a real sport? Nick Horbacezewski, CEO of the Drone Racing League said: "I think the game has the ability to let people resonate together because it has been not only a traditional racing game but also a game with new technology. Recently it has been reported that the drone competition is expected to become the next emerging sporting events. Unlike most racing sports such as car racing, horse racing or dog sledding there is no driver inside the drone. Drivers need to wear goggles, and they control it according to the video camera embedded in the front of the drone. Such manipulation is known as FPV (first person video). By combining FPV and UAV that participants and spectators could experience the speeds up to 90 miles / hour and give participants an immersive, high-speed flight experience of competition.

In the United States, the two-day U.S. National Drone Racing Championships held in California State Fair in 2005. It attracted 120 participants to participated in and the prize money is reaching a high of $ 25,000. It was reported that the game was expected to attract only 60 spectators, but the videos of UAVs hit on YouTube more than a million. Moreover in France, Australia and the United Kingdom the similar evevnts have been also organized.
In China in November 2015 the International Air Robot Contest (IARC) was held at the Beijing University of Aeronautics and Astronautics, the two play-offs multi-rotor UAV "Shepherd of Action" and "remote through" were added. And the competition rules was setting based on FPV model. Both playoffs game directly push the game to a climax and the applause, screams constantly which made the entire event completely a success.

With the growing popularity of the UAVs and virtual reality goggles equipment, consumer goods of science and technology are increasingly becoming affordable. Related associations, Unions strongly promote and integrate into the modern new technology with God's perspective of the world, the industry of UAV is bond to boil up and FPV drone competition will be growing as a high-energy movement.

Competition of UAVs is on the rise and development. it is a new industry and event planning and preparation will require a lot of time and manpower. The real development of drone competition takes time and it also faces many problems.such as the FPV battery flight time.

Currently, the UAVs on market mainly target lithium polymer battery as the main power. Endurance ability is typically between 20-30 minutes. There are some differences because of different technology but most of their flight time is less than 45 minutes while their charging time is more than one hour. The UAVs can not carry heavy battery with large capacity due to the need to minimize the weight of UAV. Most of the UAV just can maintain ten to twenty minutes in flight then it must be replaced by another battery or plug in the charging cable. So pilots often go out with three to four batteries which is regarded as a primary limits to the development of the UAV industry. To promote the development of the UAV marketing we should putting the problem how to prolong the flying time of UAV into the first place.

In September 2015 Tesla, a leader in the field of electric vehicles, announced a specific application of aerial UAV prototype. Company Tesla showed their scientificalness in rechargeable batteries. It was reported that the UAV was equipped with a 10000mAh battery and a single charge could promise a sustainable flight for 60 minutes and the charging time is only about 20 minutes. Tesla with unique skills has entered the UAV market and it is bound to have a tremendous impact on the domestic UAV battery. Everyone hope to have a kind of battery which charging time is shorter and flying time is longer. But this long-awaited product is still in the phase of conceptual designing.

The research on UAV battery has emerged in endlessly. Currently most of the new products are on the phase of research, and development of the UAVs battery can not be predicted. We hope these UAV battery can live up the expectations.
Source: http://www.genstattu.com/blog/drone-competition-is-growing-as-a-high-energy-sport/

The application of drone in ecological protection

Due to the unique bird's-eye view, the drone can observe a wider range. The drone can offer you help no matter you are an agency selling real estate or you are a forest patrol.
In fact, drones, a cutting-edge technology, have been applied in ecological preservation areas, which would make the protection works easier. Let us see how it works.

In forest degeneration areas, the traditional plating method needs a large quantity of manual labors, which is time-wasting. In 2015, a new British company designed a drone, which can sow a special seed capsule into the soil. In practice, just like a bullet, the seed capsule would be shot and fixed into the soil. At the same time, the seed will rupture and can be exposed in the sunshine, then it will grow.

That drone can successfully sow ten seeds per minute, and it is estimated that a group of drone can sow 36,000 seeds for maximum every day.

However, the drone can be used before seeding. Scientists can take advantage of drones to make aerial photography towards the forest degeneration areas for the ground mapping. Moreover, the drone is able to supervise the illegal plant-cutting in the forest degeneration areas.

Supervise the habitats

The drones, with light weight and good performance, can shoot the detailed aerial photography, even converted into 3D model. Scientists can quickly identify the change of habitats when they use the drone to shoot systematically such as the periodic shooting for a certain area. The change of habitats can attribute to the the change of density of crown, erosion of river bed, quality and quantity of water, etc.

Drones can make aerial shooting for a large area in very short time. The scientists can analyze the change of the human activity, such as plantation destroy and expansion of the market around the particular habitats through image scaling.

fight against poacher

Drones can use with various tools, and one of them is thermal imaging camera. In some situations, this camera can transfer the video real-time to the researchers. Those two factors make the drones become the effective weapon to attack the poaching. Thermal imaging camera can shoot the human's appearance and shape through the trees and can track the campfire set by the poachers. Tracking poachers by drones is comparatively safe since the poachers often hold the weapons. Knowing the position of poachers contributes to the arrest, and stops the poachers from hiding.

tracking animals

The biologists in ecological preservation areas are using radio to track the displacement distance of animals and their habitat scales and judge whether the animals have entered the prohibited areas (non-preservation areas or human activity areas).

But the radio is regarded as an out-of-date method and time-consuming, because scientists have to go to the regular activity areas of animals in person, track the radio signal on foot and make record. In contrast, the drone can fly following the radio signal and collect the data and image more quickly, so that the scientists can track more animals and acquire more data.

Be against the forest fire

Thermal imaging cameras can also be used in investigating forest fires, avoiding the expansion of fires to cause the serious result. With the help of drones, people can make the quick reaction and control the fire easily.

But the drones can make more contributions to the forest fires. Till now, the firemen have always taken the planes or helicopters to observe the fires. Unfortunately, the firing areas are full of danger, such as the collision of several aircraft in a limited space. The drones can renew the the observation measure and guaranteed the safety of pilots and firemen.

Of course, if the drones are not the only equipment, the drones should cooperate with the aircraft very carefully and precisely.

Drones protect future

Undoubtedly, the drone has changed lots of fields, from estate selling to military activities. Recently, the drone has made contributions to ecological preservation areas and biological field. Now that the ecological protection has not made so much progress, the drone tech would definitely become a popular auxiliary.And also the UAVs flight time is a very popular industry, Gens ace &Tattu lipo battery has a few of reputation in the UAV field, if you interested, you can pay more attention to Gens ace 2s lipo battery and Tattu smart battery.
SOURCE: http://www.genstattu.com/blog/the-application-of-drone-in-ecological-protection/

A breakthrough of the flight time of the industrial level UAVs battery

There's a breakthrough of UAV battery.
In the beginning of this year, the first domestic high mobility X8 multi-rotor drones with 7*24 hours' flight time was release in Chuangzhi Technology Center, Shanghai, China. This drone is called "skyhook" and adopts irregular ground power transmission system to support the continuous flight. It can carry visible light zoom camera, infrared camera, airborne radar and communication antenna to supervise the security, deal with emergency danger and control the traffic. Those are all the impossible missions for the consumer level drones among the market.

the breakthrough of flight time

Previously, the flight time mainly hinders the drone scene application. Skyhook makes the continuous flight come true. Compared with the consumer level drones, Skyhook uses a suit of power supply unit form the ground with the power transmission system, communication signal and a cable made of fiber that can connect with the cars or other fixed device on the ground. All of those ensure that the drone can be mobile can work continuously.

TATTU is remarkable in the field of battery for drones. The ultra-long flight time, smart battery and protection of low voltage are all the strengths. In the storage, compared with the other battery, the Tattu battery can stop discharging once the voltage reaches 3.5V and self-protect(3s 2200mah lipo).

In addition to the flight time, the perception and identification is another main problem for drones.

There are three measures to realize the perception and identification. First, depend on the extra sensor, the radar, because it is hard for drones to fly safely in the shared areas without people's supervision and control. Second, identify the object by the drone's camera, which need strong computation ability. Finally, a traditional computation, which need the drone designed to identify or escape the threat by the precise computation, and comprehend how the object is identified while moving. Skyhook adopts that carrying different devices such as infrared camera and laser radar 3D scanning topography, and analyzes by the returned images.

No matter which measure, the key is to let drones know their surrounding, which is very helpful, even though the application scenarios are very limited. For example, they can identify whether there is hole on the frozen roads, find the fires while patrolling in the forest, and find the footprints of the missing climbers.

The diversity of application scenarios

For next steps, some company will research how to carry different load to accomplish tasks according to the application scenarios. For example, the forestry has comparatively low automation rate, and the drones can fly for patrol 24 hours instead of labor. Another application scenario that can be imagined is that in the disaster of Tianjin explosion, drones can be used to test the temperature, gas composition and microarticle in the air. Also, with the visible light and infrared camera, it can search the signs of life.

In recent years, drones have been firstly applied in the anti-terrorist, drug control, traffic dispersion, fire-fighting and other safety tasks. The quantity of purchase has been increased. In 2014, the public security organization has purchased more than 60 drones, and until the third season, 2015, the public security organization has purchase over 300 drones, which is five times more than 2014.

Drones have developed dramatically from civil use to commercial use.

Drones also applied in agriculture irrigation. The drones can irrigate 40 times faster than manual irrigation. Using the microwave radar, drones can scan the ground in real time, keep a suitable distance and control the volume of liquid. It can fly 8 meters per second, and cover the crops with liquid evenly. It can switch the mode among fully automatic, half-automatic and manual operation, and has the property of dust protection, waterproof, corrosion resistance. Furthermore, it can fold.

Apart from the agriculture, the traditional geography has taken advantage of the professional drones, such as monitoring weathering, observing the change of river and glacier. The archaeologist and historian are using the drones loaded with common digital cameras to 3c modelling and restore the scene of ancient architecture relics.

The wide range of application brings new trouble for drones. The drones have the characteristics of low altitude, low speed, small objective, so they are hard to supervision, detect and dispose, especially the prevention and control. It need further observation and research that how to regulate this safety factors, since illegal photography or delivering drugs is a countless phenomenon.
Source: http://www.genstattu.com/blog/a-breakthrough-of-the-flight-time-of-the-industrial-level-uavs-battery/