How to sort and test the capacity of lithium batteries?

The voltage method is the earliest method to test the capacity of lithium batteries. The remaining capacity is obtained by monitoring the open circuit voltage of the battery. This is because there is a definite relationship between the battery terminal voltage and the remaining capacity, and the remaining capacity can be estimated by measuring the battery terminal voltage. Lithium battery sorting tests can generally be divided into two types: capacity sorting and characteristic sorting. Characteristic sorting is also called curve sorting. It is derived on the basis of capacity sorting. Capacity sorting is the division of lithium batteries by capacity intervals as described above, and characteristic sorting is to meet the capacity Under the premise of selecting the conditions, the batteries in the interval from Qiantong to tolerance are distinguished according to different voltage characteristics. The sorting of secondary batteries is generally realized by computer control. Most automatic sorting equipment is equipped with corresponding software, which can easily implement these operations. Generally speaking, manual sorting equipment can only meet the requirements of capacity sorting, and basically cannot perform characteristic sorting. Even in the quiet condition of capacity sorting, it takes a lot of manpower to complete it, and the operation is more troublesome. At present, most manufacturers of secondary lithium batteries use automatic sorting equipment to carry out sorting operations. The sorting conditions are set by the grate machine and sent to the equipment. Those who meet the conditions will be instructed. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Briefly describe the principle of lithium battery protection chip