Sodium battery 210AH high and low temperature discharge test report

 Number of tests

2 pcs

Test cycle

3d

Atmospheric  voltage：86~ 106Kpa

2. Test equipment： Charge and discharge test cabinet

3. Test method：

1）High temperature discharge： The battery was fully charged and stored at 55℃ for 5h, and then discharged at 0.5P to 1.5V at 55℃;

2）low temperature discharge： The battery is fully charged and stored at -10℃ for 24h, and discharged to 1.5V at 0.5P. The battery is fully charged after being placed at room temperature for 6h, and stored at -20℃ for 24h, and discharged to 1.5V at 0.5P at -20℃.

1)High temperature discharge： capacity ratio≥95% ;

2)-20℃ discharge: capacity ratio ≥90%;

5. Test data

Relationship between single-cell capacity and temperature

6. Experimental results:

High temperature discharge: Capacity ratio ≥95%; -20℃ discharge: Capacity ratio ≥90%, meeting the test requirements

7. Result judgment: qualified

Number of tests

2 pcs

Test cycle

3d

Atmospheric voltage： 86~106Kpa

2. Test equipment： Charge and discharge test cabinet

3. Test method：

1）After the volume is fixed, fully charge the battery and place it at 25°C for 4 hours;

2）The battery cell is charged at 0.5C (actual charging energy calculation) constant power for 6 minutes and left for 2 hours;

3) Cycle step 05) 20 times

4. Test data

0.5℃-25℃ discharge characteristic curve