Formation of 3C lithium battery means that the anode and cathode materials in the battery core are activated by charging and discharging after the battery is manufactured, so as to improve the self-discharging, charging and discharging performance and storage performance of the battery. Capacity grading refers to grading the battery capacity by testing the battery capacity and other electrical performance parameters after the battery is manufactured. Formation and capacity separation of 3C lithium battery are completed by automatic system respectively.

Why should 3C lithium batteries be assembled and disassembled? Because the consistency of parameters such as capacity, voltage, current and internal resistance is not high due to the restriction of battery production process after the production of battery cells is completed, it is necessary to divide and divide the battery capacity to maintain the consistency of 3C lithium battery cells.

After the formation and capacity separation of 3C lithium battery are completed, its performance needs to be tested. In the test, the elastic microneedle module can be used as the medium of current transmission and play the role of stable connection. The performance test of 3C lithium battery includes basic performance, safety performance, environmental performance and electrochemical performance. The elastic microneedle module can pass the current in the range of 1-50A during the test, and has strong overcurrent capacity, with an average service life of 20W times, which can effectively improve the test efficiency of 3C lithium battery and ensure the high efficiency and safety of the test.