The production of lithium batteries will be put into the capacity cabinet for charging and discharging before leaving the factory, and the temperature will rise slowly in this process, accompanied by a large amount of heat release. In order to obtain the comprehensive data of lithium batteries, the temperature sensor installed in the capacity cabinet will be used to obtain real-time temperature.
       What is lithium battery capacity?
       Simple understanding is capacity sorting, performance screening classification. Lithium battery capacity through the computer management to get each detection point data, so as to analyze the size of the battery capacity and internal resistance and other data, to determine the quality of lithium battery grade, this process is the capacity. Lithium-ion batteries need to stand for a period of time, usually no less than 15 days, after the first capacity separation, during which some inherent quality problems will show up. Formation of lithium battery: generally refers to the implementation of a series of technological measures for the initial charge of the battery to make its performance stable, including small current charging and discharging, static temperature, etc.
        Principle of lithium battery capacity separation:
        The capacity separation of lithium battery is completed by the component capacity cabinet (because the basic principle of formation and capacity separation is the same, the formation and capacity separation function is integrated in the same cabinet, called the component capacity cabinet). The function of differentiation into the capacity cabinet is actually like the charger, but it can charge and discharge a large number of batteries at the same time.
        Lithium battery capacity through the computer management to get each detection point data, so as to analyze the size of the battery capacity and internal resistance and other data, to determine the quality of the battery grade, this process is the capacity.
       What is the function of lithium battery capacitance?
       The production of lithium cell can not be sold immediately, should be stored for at least 15 days, during this period, some inherent defects are shown, such as self-discharge is too large and so on, in the library to save the period of the cell, after getting the order, and then take out again testing again capacity, that is to say, charge and discharge again, the capacity can not reach the grade, Or quality problems eliminated, and then to maintain about 50 percent of the power to the sales department, and finally to the mobile phone battery assembly plant hands. The cells that will be used for the assembly of lithium batteries are separated by the forming machine. Through this process, some cells that do not meet the requirements can always be picked out and returned with the cell factory. After the mechanical test of lithium battery detection, it can be seen that the battery is charged and discharged, and it is "charged". So when you get the battery, you get two bars, which is normal. The classification and grouping of lithium battery is to select the monomer with the same internal resistance and capacity for combination. When combined, only those with similar performance can form a lithium battery pack. For example, in order to meet the energy demand of electric vehicles, power battery packs often require dozens to thousands of batteries. Affected by the complexity of the system, the behavior of battery packs is unique, and it is not a simple addition and subtraction of a single battery to obtain the performance of lithium battery packs.
          Precision requirements for formation and volume separation of lithium batteries:
          In order to improve the electrochemical performance of lithium battery such as cycle life, stability, self-discharge, safety, etc., the consistency of lithium battery must be strictly controlled or the battery grade must be accurately assessed. Therefore, the measurement accuracy of current and voltage of formation and capacitance separation equipment has high requirements, limited to the sensor acquisition accuracy. At present, the measuring accuracy of current and voltage of chemical capacitance equipment in the market is generally about one thousand. For the formation, the higher the accuracy of current and voltage control, the better the quality of lithium battery products will be. The accuracy of current and voltage sensor in more than 1/10,000 is an ideal choice.
         The battery has been partitioned and checked before leaving the factory, and the partitioned container in the lithium battery factory is partitioned. Lithium batteries are widely used in electronic products and other fields due to their high energy density, high voltage, high cycle, high safety and environmental protection. Therefore, it is very important to ensure the consistency and reliability of lithium battery products.