Introduction to the knowledge of lithium-ion batteries for drones

There are two common XT60 and T interfaces. XT60, generally rated capacity 60A, withstand large current; T type, just like his name, looks like a T type, generally rated capacity 20A; there are also a variety of interfaces, usually for low power such as remote control . The serial-parallel model airplane battery is spliced u200bu200bby a single chip, and the voltage of a single chip is 3.7V. The number in front of S represents several pieces, and the corresponding nominal voltage is also different. For example, 3S is 11.7V, 4S is 14.8V. The easiest way to determine the number of S is to directly count the number of batteries. Discharge rate The discharge rate reflects the discharge capacity of the battery and supports the maximum operating current. For example, a 5000mAh battery at a rate of 5C has a maximum operating current of 25A. Of course, the instantaneous current can be larger. For example, a common 3S2200mAh20C battery has a maximum discharge current of 2200mAh*20Cu003d44000mA. UAV battery Grepp UAV battery cell battery cell. The battery cell is the core of the battery. Remove the outer packaging of the battery to get the battery cell. The positive electrode materials of the battery are mainly lithium cobalt oxide, lithium manganate, and lithium iron phosphate. The negative electrode material is generally graphite. The production process includes winding and lamination. At present, the domestic battery production capacity is very strong, and the important ones are ATL, Greepu, BYD, and Ru0026F. PACK is packaged with the assembled battery cells connected by the adapter board to become a PACK. Generally speaking, how many strings and how many parallels refer to the series-parallel method of battery cells, which increase the voltage in series and increase the capacity (current) in parallel. 3S2P refers to three series and two parallel. If the rated voltage of the battery cell is 3.7V and the capacity is 2600mAh, then the PACK is 11.1V and the capacity is 5200mAh. The battery pack refers to the series and parallel connection of batteries. Technically, some batteries are a set of batteries. So a single battery is not a real battery, but we still call it a battery. But the regular AAA battery of your TV remote is actually a battery with a single positive and negative terminal. Lithium-ion batteries have a variable battery count. Small drones and smart phones usually use a single battery, denoted as 1S. You may have thought that your 2S will be a two-cell battery, and so on. Battery energy density is divided into weight energy density and volume energy density. Because drones are more concerned about weight, weight density is often used to measure battery performance. That is, the energy of the battery per unit weight, unit: Wh/Kg. The capacity of other batteries is not as large as possible. Larger capacity will cause the battery to become heavier. Because drones have requirements for battery life as well as battery explosive power, no matter how high the capacity is, the explosive power is not enough, the battery capacity can not be used up, and the aircraft cannot fly for long. Therefore, the battery must be based on the specific unmanned aircraft. The requirements of the drone, the appropriate capacity and magnification are configured (the magnification is generally 25C-30C, depending on the characteristics of the drone), otherwise it will easily affect the performance of the drone. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.