Changes in lithium battery capacity and analysis of lithium battery detection methods

The capacity of a lithium battery is related to the discharge current of the lithium battery and the temperature of the electrolyte. Therefore, the nominal capacity is obtained at a certain discharge current, a certain termination voltage and a certain electrolyte temperature. There are two types of standard capacity. If the lithium battery is not used for a long time, it will slowly discharge by itself until it is scrapped. The capacity of the lithium battery is usually in amperes and hours. The calculation formula of the lithium battery capacity is Cu003dI∫t0tdt. The lithium battery capacity is divided into actual conditions according to different conditions. Capacity, theoretical capacity and rated capacity. The capacity status of lithium batteries will decrease with the increase in the use time of lithium batteries. According to the research results of 25,000 lithium batteries by the International Electrochemical Society, lithium batteries will enter an unstable period after 2 years of use, which means that lithium batteries After the battery pack is used for 2 years, a lithium battery cell with a drastically reduced capacity will appear. With the rapid development of the lithium battery industry, the demand for 5V series of lithium battery cell detection equipment has increased greatly. Because lithium batteries have a wide range of specifications and models, and the scope of use is wide, the requirements for lithium battery cell testing equipment are also increasing. Colorful, Keda brand 5V series lithium battery test equipment, current rise time 10ms, charge-discharge switching time 20ms, accuracy 0.05% FS, not only can complete all test requirements for battery testing in the general sense, but also fully meet the relatively complex and complicated software Simulated operating conditions of new energy vehicles with higher hardware requirements. 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: Analysis of seven common faults and solutions for power lithium-ion batteries