Instruments and procedures for charging and discharging test of lithium-ion battery pack

　　When the lithium-ion battery pack is bought back, it is critical to carry out a series of inspections, especially charge discharge tests. When testing the cycle performance of lithium ion batteries, it is important to determine the charging and discharging mode of the batteries. The instruments and methods used in the charging and discharging test will be described in detail in the following sections. Collect all the things you don't know!

　　1. Introduction to Experimental Instruments

　　The charge and discharge test of lithium-ion battery packs generally adopts constant current constant voltage charge and constant current discharge modes, recording the test time, voltage, current and other data during the process, and characterizing the electrochemical performance parameters such as battery or material capacity, coulomb efficiency, charge and discharge platform, and battery internal parameter changes by analyzing the data changes during the process.

　　At present, the lithium-ion battery pack test system used by relevant domestic and foreign organizations includes the battery test system of Arbin Company, the battery test system of Sunway Company, the battery test system of Blue Power Company and the battery test system of MACCOR Company.

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