Lithium battery series formation capacity calibration equipment and calibration method

The invention discloses a capacity calibration device and method for lithium battery series formation. The capacity calibration device comprises a shell; the calibration system comprises a power supply module, a switching module, a constant voltage module, a detection module and a main control module, and the power supply module is connected with the switching module, the constant voltage module, the detection module and the main control module; and the main control module controls the switching module to perform mode or channel switching so as to detect current values and voltage values of series formation and capacity grading of lithium battery production in the constant voltage module through the detection module. According to the invention, the voltage and current requirements of series formation and capacity grading in lithium battery production can be met. By means of tool calibration, equipment is more reliable, use is more convenient, meanwhile, good formation effect consistency and larger-scale produ