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1、BAK B18650CC-2.2Ah performance report,2012-5,Summery of Performance test result:,Note: Standard charge / discharge Condition,Summery of Safety test result:,Phenomena code:,5.4.1 Discharge rate capability at 22.5 2.5C Test inspection: The cell is charged according to standard charge method at 22.5 2.
2、5C, and then, it is discharged to 2.75V using 0.5C current. -The cell is charged according to standard charge method, and then, it is discharged to 2.75V using 1C current; -The cell is charged according to standard charge method, and then, it is discharged to 2.75V using 2C current; The cell is char
3、ged according to standard charge method, and then, it is discharged to 2.75V using 3C current, The cell is charged according to standard charge method, and then, it is discharged to 2.75V using 5C current, - The discharge capacities of different current shall be recorded. -Pass Criteria: -The discha
4、rge capacity at 1C / the 0.5C discharge capacity 95% -The discharge capacity at 2C / the 0.5C discharge capacity 97% -The discharge capacity at 3C / the 0.5C discharge capacity 97% -The discharge capacity at 5C / the 0.5C discharge capacity 97%,Discharge rate capability,5.4.2 Cycle life -Test inspec
5、tion: Ambient Temp: 25-The cell is charged by 1C, and terminate by 4.2V/0.02C , and then it is discharged by 1C/3C to 2.75V. The rest time after discharge is 30 minutes in this cycle. -The test continues for 500 cycles/300 cycles. -Pass Criteria: Residual capacity/ Original capacity 80%.,Cycle life,
6、Method: Charge 1C 4.2V 0.02C cut off, 10 min rest Discharge 1C/2C/3C 2.75V cut off, 30min rest,Cycle life,Method: Charge 1C 4.2V 0.02C cut off, 10 min rest Discharge 10A to 2.75V cut off, 30min rest,5.4.3 High-Low temperature discharge performance -Test inspection: Cell shall be charged following th
7、e standard charge method. And then the cell shall be stored for 3 hours at 25 followed by a discharge at 1C to 2.75V at this temperature. -Next the cell shall be charged following the standard charge method. And then the cell shall be stored for 3 hours at 60 followed by a discharge at 1C to 2.75V a
8、t this temperature. -Then cell shall allowed to cool to room temperature for one hour, followed by standard charging. And then the cell shall be stored for 3 hours at 0 followed by a discharge at 1C to 2.75V at this temperature. -Then the cell shall be allowed to warm to room temperature for one hou
9、r, followed by standard charging. And then the cell shall be stored for 3 hours at -10 followed by a discharge at 1C to 2.75V at this temperature. -The discharge capacities of different temperature shall be recorded. The capacity of the cell at each temperature shall be compared to the capacity achi
10、eved at 25 and the percentage shall be calculated. -Pass Criteria: -The discharge capacity at -10 / discharge capacity at 2560% -The discharge capacity at 0 / the discharge capacity at 2580% -The discharge capacity at 60/ the discharge capacity at 25100%,High-Low temperature discharge performance,5.
11、4.4 Storage Performance -Test inspection: - After standard fully charge, according to standard charge method, the cell is discharged according to standard discharge method. - Perform 10 cycles to check capacity. Finishing fully charged. Record capacity of 10th cycle. The 10th cycle discharge capacit
12、y is called the original discharge capacity. Then the cell is fully charged according to standard charge method and stored at 25 for 1month. - After storage, the cell is discharged according to the requirement of standard discharge method. This discharge capacity is named by the Residual capacity. A
13、nd than charge and discharge the cell by 0.5C. The discharge capacity is named by the Recovery capacity. - Pass Criteria:,Storage performance,5.5.1 Vibration test -Test inspection: Ambient Temp：22.52.5 After standard fully charge, cell shall be attached to a vibration table directly and subjected to
14、 vibration that consists of 10 Hz to 55 Hz to 10 Hz at the speed of 1Hz/min in 90100mins.The total excursion of the vibration is 0.8mm(0.060 inches). The cell shall be vibrated in each direction along axis of the cylinder and the vertical directions of axis of the cylinder. The final impedance shall
15、 be recorded. -Pass Criteria: -There shall be no electrolyte leakage.,5.6.1 Insulated Overcharge Test -Test inspection: Ambient Temp：22.52.5 The cell is discharged following the standard discharge method. Wrapped the cell with glass wood. Apply a 12V power supply and a 1C charge current for 1.5hrs.
16、-Pass Criteria: -No leakage、No flame、No fire、No explode.,5.6.2 Over discharge Test -Test inspection: Ambient Temp：22.52.5 Cell shall first be charged according to standard charge method，and then cell is to be discharged by 0.2C current for 12 hours; The test is completed when the cell is to be discharged up to 250% of rate capacity or the other protective devices prevent the discharge. -Pass Criteria: -No flame、No fire、No explode.,5.6.3 Hot oven te
