What are the differences between lithium battery capacity and rated capacity?

The difference between the capacity of the lithium battery and the rated capacity The capacity is an important indicator of the electrical performance of the battery. Lithium battery capacity is usually divided into rated capacity, actual capacity and theoretical capacity. The capacity of the lithium battery is determined by the capacity of the electrode, especially the positive electrode material. By improving the performance of the positive electrode material, the capacity of the lithium battery can be greatly increased and the volume of the battery can be reduced. Lithium battery capacity is a very critical indicator in lithium-ion applications. At present, the commonly used methods for calculating and evaluating lithium battery capacity include chemical method, voltage method, and current integration method. Battery capacity: It is one of the important performance indicators to measure battery performance. It represents the amount of electricity released by the battery under certain conditions (discharge rate, temperature, termination voltage, etc.) (JS-150D can be used for discharge test), that is, the battery capacity, usually The unit is ampere hour (abbreviated as AH, 1Ahu003d3600C). The battery capacity is divided into actual capacity, theoretical capacity and rated capacity according to different conditions. The calculation formula of battery capacity C is Cu003d∫t0It1dt (integrate current I from t0 to t1), and the battery is divided into positive and negative poles. The battery capacity is generally calculated by AH (ampere hour), and the other is calculated by CELL (unit plate) several watts (W). Rated capacity: refers to the capacity of the motor or electrical appliance marked on the nameplate that can work continuously for a long time under rated working conditions. Generally, it refers to apparent power for transformers, active power for motors, and apparent power or reactive power for phase modulation equipment, in VA, kVA, and MVA. The actual capacity of the battery: reflects the actual storage capacity of the battery, and the unit is expressed in Ah ampere-hour. Similarly, the greater the ampere hour, the greater the battery capacity, and the longer the range of the electric vehicle. During use, the actual capacity of the battery will gradually decay. The national standard stipulates that the actual capacity of a new battery is greater than the rated capacity as a qualified battery. For example, the batteries of electric bicycles on the market now require more than 2 hours (120 minutes) to discharge at a constant current of 5A, which is greater than (2 hours × 5A) 10Ah. It is equivalent to an electric car driving on a flat road for more than 2 hours. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What is the difference between a lithium battery charger and a lead-acid charger?