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-EVE Power CO,LTD Confidential Proprietary-
3.11 Rate Discharge Performance
Discharge the cell according to (3.9)at the ambient temperature of 25°C ±2°C;
Charge the cell to 3.65 V at a constant power of 448 W and rest for 30 min,note as E1*;
Discharge to 2.5 V at a constant powerof448 W and rest for 30 min,note as E₁*;
Charge the cell to 3.65 V at a constant power of 896 W and rest for 30 min,note as Ez;
Charge the cell to 3.65 V at a constant power of 448 W and rest for 30 min;
Discharge to 2.5 V at a constant power of 896 W and rest for 30 min,note as E₂*;
Discharge the cell to 2.5 V at a constant power of 448 W and rest for 30 min;
Charge the cell to 3.65 V at a constant power of 896 W and rest for 30 min,note as E;
Discharge to 2.5 V at a constant power of 896 W and rest for 30 min,note as Ea*;
Discharge to 2.5 V at a constant powerof448 W and rest for 30 min;
1P discharge energy retention rate =E2/Ei*
0.5P energy efficiency =E₁*/Ei;
1P energy efficiency =E₃"/E3.
448 W 3.65 V, 30 min,E;
448 W 2.5 V, 30 min,E;
896 W 3.65 V, 30 min,E;
448 W 3.65 V, 30 min;
896 W 2.5 V, 30 min,E₂*;
448 W 2.5 V, 30 min;
1P= E₂*/E₁**100%;
0.5P= E₁/E₁*100%;
1P=E₃*/E₃*100%;
3.12 High/Low Temperature Discharge Performance
3.12.1 45℃ Charge-discharge Performance
Discharge the cell according to (3.9)at the ambient temperature of 25°C ±2℃;
Rest the cell for 5 h under the ambient temperature of 45°C ±2℃;
Charge to 3.65 V at a constant powerof448 W and then rest for 30 min,note the energy as E4;
Discharge to 2.5 V at a constant powerof448 W and rest for 30 min,note the energy as E4";
Discharge energy retention rate =E4*/Eo*X100%
，
energy efficiency =E4*/E4X100%.
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