2020年6月27日星期六

Best Battery Manufacturer in China

The global battery market is growing constantly, and competition between manufacturers is expected to intensify with the introduction of new and advanced technologies and higher investments in the market.
Out of all these companies, we will explore the top 5 battery manufacturers in China.

CALB

With headquarters in Luoyang, China and more than 2,000 employees worldwide, CALB is a large, nationally owned enterprise. It provides products for renewable energy storage, transportation, wind and photovoltaic energy storage, telecommunication, mining equipment, and rail transportation markets. Its products include lithium-ion batteries featuring large capacity, long cycle life, high power density, low self-discharge rate, and low temperature performance.

BYD

BYD was established in 1995, and its headquarters are in Shenzhen, China. The main products are lithium iron phosphate power batteries and lithium-ion polymer batteries. BYD announced in 2018 its plan to quadruple its manufacturing capacity before 2020. The clients of BYD include top consumer electronics brands such as Samsung, LG, Huawei, Lenovo, ZTE, and TCL.

Shenzhen BAK Technology

Founded in 2001, Shenzhen BAK Technology Co. Ltd is mostly known for its lithium-ion polymer  and LiFePo4 batteries. It manufactures and exports various types of rechargeable batteries. Around 75% of their products are exported globally while the rest of the 25% is sold within China. The company has subsidiaries in Europe and India and has set up offices in the United States to support an extensive domestic market.

LARGE

Dongguan LARGE Electronics Co. Ltd. was established in 2002. It focuses on lithium-ion-battery module research, development, production, and sales. The company’s main products are power supplies, power-storage power supply, industrial power supply and other consumer power supplies. It has grown to be a leading lithium-ion battery provider with customizations.

Grepow

Shenzhen Grepow Battery Co., Ltd. was founded in 1998. It is an advanced technology company that specializes in the research and production of NIMH, Li-PO batteries, and LiFePO4 batteries and development of power management systems. After decades of development, Grepow is now one of the largest manufacturers of high C-rate and high capacity batteries in China. Its sales network covers all areas of China, most areas of Asia, Europe, America, Austria, and some areas of Africa. We have established offices in Xinjiang, Germany, and U.S.A. to provide better service to customers for delivery efficiency and after-sales service.
The battery manufacturers in this article are in no particular order. In fact, there are many other battery manufacturers in China who contribute to the further development and research of batteries.

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2020年6月9日星期二

Top Drone Parts Companies

Article source: Top drone parts companies

1. Drone Electronic Speed Controller (ESC)

ESC stands for Electronic Speed Controller, and they control the speed of the motors in drone. The ESC receives throttle signals from the flight controller, and drives the brushless motor at the desired speed.
There is a working current on the label of ESC, such as 20A, 30A, etc. This is the maximum continuous working current of ESC, and if it continues to exceed the current, the ESC will burn out. When the multirotor drone is moving at high speed or hovering in a windy environment, the working current will be greatly increased. Therefore, we should try to select ESC with larger working current than normal’s when the price and structure space permitted.
Also, ESC has internal resistance, the heat dissipation performance should be paid highly attention to when choosing a suitable ESC.
Using good quality ESC will for sure bring you with a reliable and smooth flight experience.

* ESC company Recommend: HOBBYWING


HOBBYWING is dedicated to developing and manufacturing different brushless power systems (motors & ESC) and relevant electronic devices for RC cars, boats and aircraft for all players.

2. Drone Motors

The motor is an essential part of the power system of UAV.
The continuous maturity of brushless motor technology is also an important technical basis for UAV industry. Compared with brush motor, brushless motor has the advantages of high efficiency and lifespan.
A motor is indicated by 4 numbers like 2207 or others. It 27 shows the diameter and (07)shows the height of the rotor in millimetre (mm). The bigger the motor gets, the higher the thrust it can generate.

KV represents the speed at which the motor rotates for every volt applied to the motor. The value of KV is multiplied by the voltage equal to the idle speed of the motor (revolutions per minute).

* Motor company Recommend: T-MOTOR


T-motor is a brand which specialize in UAV’s propulsion system, with full coverage-product line of components from light weight FPV racing motor to heavy lift brushless motor, carbon fiber propeller ESC, the whole propulsion system, which also set the standard in the UAV industry.

3. Drone Battery


The battery is also one key part of the drone, the main drone power battery type is Lithium Polymer battery (LiPo Battery) on the market, compared with other battery type, lithium polymer battery has higher energy density, higher discharge Rate and better performance. lithium polymer batteries are made of several cells in series or parallel, normally, every single cells has a standard full voltage of 4.2V and a rated voltage of 3.7V.
Intelligent battery is specially designed for UAV drone. What’s the difference? Smart battery with a built-in Battery Management System(BMS) which could have functions as below: balance the charging protection, charging temperature protection, Over charge/discharge protection, short circuit protection, SOC Indicator, battery daily record, charging temperature protection, over-current protection, etc...

* Drone Battery Company Recommend: GREPOW

Grepow is the Leading Global Professional Customize Battery Manufacturer, HQ founded in 1998 in China and now has two branch both in USA (www.genstattu.com) and EU(www.gensace.de)
Specialized in the research and production of NIMH/LIPO/LiFePO4. Grepow possesses the tech from cell design, structural design, BMS design to pack design.

4. Charger

Lithium Polymer battery (LiPo Battery) is usually charged by the charger with balance function, which will automatically adjust the charging voltage of each battery cell to get maximum consistency.
This is also the safest and most common used charging way on the market.

* Charger company recommend: Sky RC


Sky RC, established in 2008, specializing in chargers and power supplies, providing the highest standards in both product expertise and customer service. They are well known for iMAX B6AC charger which is the most common charger used in the RC hobby industry at the beginning. Of course, for drone battery charger, EVPEAK is also worth knowing, they focus on dedicated charger for uav, intelligent balance charger and so on.
Need more information, please email us: info@grepow.com

2020年6月3日星期三

Drone Delivery

Work cited: Grepow news — Drone Delivery
There have been some exciting announcements in the world of drone deliveries lately. The announcements come more from the FAA than from the tech companies, as there have finally been drone deliveries in the United States.
Is this the beginning of crowded skies delivering our food, drone parts and new socks, or is this just a fad? You and I know drone deliveries can be a sustainable technology, and obviously companies like Amazon, Google and USPS think the same.
The pros and cons of drone delivery are worth our attention.

What is Drone Delivery?

Delivery drones are unmanned aerial vehicles (UAVs) that can deliver lightweight packages. Drones generally use 4-8 propellers and rechargeable batteries to provide thrust and attach packages underneath the body of the drone.
Delivery drones are operated autonomously or remotely with operators potentially overseeing multiple drones at once. Delivery drones are used for medical goods, food, retail, or even deliveries that can be difficult to achieve through more traditional vehicle-based services.

Possible benefits of drone delivery

The purpose of a delivery drone is to provide services for delivering objects or commodities rapidly and in hard-to-reach or out-of-the-way locations. They can deliver products quickly to virtually any location.
Drone delivery companies can save money on shipping costs, which would in turn reduce costs for consumers.  Furthermore, a drone would not add to roadway congestion due to less vehicle miles traveled (VMT), and there would be improved safety for the driver of the vehicle.
Consumers would also receive their packages far more quickly and reliably, which would build consumer trust and encourage repeat purchasing.

Possible Limitations of drone delivery:

Drone Battery Life

One of the limiting factors for drone delivery has been battery life. High-quality drones usually can stay in the air for about 30 minutes, and the longer a drone has to recharge, the less packages a fleet can deliver.

Expenses

The cost of adding delivery drones to a company’s services requires a significant investment in the infrastructure of the organization. That’s why there are only a few large businesses that consider using this technology at present. The average price of a drone that can accurately make a delivery can be up to $500.

Privacy risk

Streaming videos to headquarters would allow supervisors to know if a delivery was successfully completed. This technology could help to lessen the risk of theft in the future as well, but there are privacy concerns as drones would likely use GPS and cameras to find homes and deliver packages.

Uncertainty

Irregular and/or unpredictable events, such as weather, wildlife, or vandalism/sabotage, could bring down a drone during a delivery, which could potentially become a safety hazard for those on the ground and/or adversely impact the reliability of drones.

Others

Limited payloads prevent heavier or larger items from being delivered via drone, and designated drop-off locations may become difficult to determine in dense, urban areas.
These are all factors that need to be considered when operating drones for delivery.

Conclusion

It’s just a matter of time until drones have the potential to eliminate the challenges people face every day. Drone delivery is inevitable: when regulations loosen up and the infrastructure is in place, we should expect to see drone deliveries for a variety of purposes. Drones could enable a step change in the availability of everyday items.

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More information please email us: info@grepow.com