EVE LF280K - Page 19

-15
-EVE Power CO,LTD Confidential Proprietary-
Model
LF280K
Specification No
PBRI-LF280K-D06-01
Version
C
Charge the cell to 3.65 V at a constant power of 0.5P,rest for 30 min;Discharge to 2.5 V at a
constant power of 0.5P,rest for 30 min;Charge the cell to 3.65 V at a constant powerof0.5P,restfor
30 min;Discharge to 2.5 V at a constant power of 0.5P,record the discharge capacity Ci.rest for
30 min;The capacity retention rate =Ci*/280Ah×100%.
When the cell is at 80%SOH and 70%SOH,modify the charging and discharging power according
to the capacity of the cell:100
～
80%SOH,448 W;80
～
70%SOH;358.4 W;70
～
60%SOH,313.6
W.
3.15.2 45℃ Cycle
Before the test,prepare and install the clamp according to 3.3.1.
3.3.1
Pre-cycle initial capacity test:test the cell capacity according to (3.10).
Cycle test:at ambient temperature of 45°C±2℃;
a.Discharge the cell in accordance with (3.9);
b.Charge the cell to 3.65 V at a constant power of 448 W and rest for 30 minutes;
c.Discharge to 2.5 V at a constant powerof448 W and rest for 30 minutes;
d.Repeat steps b~c 2500 times.
b.448 W 3.65 V, 30 min;
c. 448 W 2.5 V, 30 min;
d. b~c 2500cycle。
Capacity test after cycle at ambient temperature of 25°C±2℃:
Charge the cell to 3.65 V at a constant power of 0.5P,rest for 30 min;Discharge to 2.5 V at a
constant power of 0.5P,rest for 30 min;Charge the cell to 3.65 V at a constant power of 0.5P,rest
for 30 min;Discharge to 2.5 V at a constant power of 0.5P,record the discharge capacity Crz and
rest for 30 min;The capacity retention rate =Ciz*/280Ah×100%.
When the cell is at 80%SOH and 70%SOH,modify the charging and discharging power according
to the capacity of the cell:100~80%SOH,448 W;80~70%SOH;358.4 W;70~60%SOH,313.6 W.