How to test high power cell?

source:other news release time:2022-12-29 Hits:0 Popular:Lithium-ion battery wholesale

　　1. Initial performance test of high magnification electric core

　　The battery is discharged to 3.0V at a constant current of 1.0CmA under the condition of 25 ± 5 ℃. After the battery is fully charged, it is left for 2 hours to visually inspect the appearance of the battery, measure the size, open circuit voltage and internal resistance of the battery. After the test, three cycles of 1.0CmA (discharge; full charge, discharge; full charge, discharge; 50% charge or full charge) are conducted to test the discharge capacity and median voltage in the third week,

　　2. Discharge performance test of high rate electric core

　　(1) Applicable test standards for batteries with different nominal ratios

　　Table of applicable test standard parameters for batteries with different nominal ratios and structural systems:

　　remarks:

　　1) Pulse circulation rate test shall be conducted at 25C and above;

　　2) 15C test standard is generally applicable to assembly process; It can also replace 7C or 10C standard as the battery magnification performance judgment standard;

　　3) The limit multiple test and high current pulse test are generally applicable to the necessary test process, and do not participate in the routine test.

　　(2) Multiplication test method and standard

　　After full charging at the ambient temperature of 25 ± 5 ℃, conduct 1.0CmA discharge and 7CmA/10CmA/15CmA/nominal magnification/

　　(nominal magnification+m)/high current pulse test/pulse magnification discharge test,

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