SDS

THE COPYRIGHT BELONGS TO TINNO MOBILE TECHNOLOGY CORP.
2021-5-6
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Page 9 of 25 Pages
Low
temperature
discharge
capacity
低 温 放 电 容
量
After the battery is fully charged in accordance with the
standard charging mode, the battery is placed in a
low-temperature box at -10℃±2 ℃ to be stored at this
temperature for 4h, and then discharged at 0.2C5 until
voltage reaches 3.0V.
电池按照标准充电模式充满电后，将电池放入-10℃±2 ℃的
低温箱中恒温 4h，然后以 0.2C 电流放电至终止电 3.0V。
The discharge time is required to be
no less than 3.5h. No obvious
appearance difference before and
after test.
放电时间≥3.5h，电池外观相比实
验前无明显差异
After the battery is fully charged in accordance with
the standard charging mode, the battery is placed in a
low-temperature box at -20
℃
±2
℃
to be stored at this
temperature for 4h, and then discharged at 0.5C5 until
voltage reaches 3.3V.
电池按照标准充电模式充满电后，将电池放入-20℃±2 ℃的
低温箱中恒温 4h，然后以 0.5C 电流放电至 3.3V。
Discharge capacity
≥
0mAh.
No obvious appearance
difference before and after test.
放电容量≥0mAh，电池外观相比实
验前无明显差异
Battery’s
internal
resistance
电池内阻
Under 23℃±2℃, internal resistance of battery with
SOC 50% is tested.
在 23℃±2℃的条件下，测试半电态电池内阻
internal resistance < 110 m Ω
（50%SOC）.
电池内阻＜110mΩ（半荷电状态）。
NTC
resistance
NTC 电阻
The required accuracy of NTC resistance is 10 k
±
1%.
Battery is put in the constant temperature box in -
10
℃
, -5
℃
and 0
℃
, 25
℃
, 45
℃
and 55
℃
, 60
℃
to be storage for 45 min with temperature and NTC
resistance (unit kΩ) be recorded. The distance between
NTC resistance and MOSS or other heating devices on
the protection board should be more than 5 mm. NTC
model is selected according to the instruction.
NTC 电 阻 精 度 要 求 10k±1% ， 把 电 池 放 在 恒 温 箱 里 在
-10℃,-5℃,0℃,25℃,45℃,55℃，60℃环境下存储45min,
并分别记录各温度下的NTC阻值(单位kΩ),NTC电阻在保护
板上的位置需要避免放置在MOSS等发热器件旁边，距离要求
5mm以上，NTC按照指定型号选用。
The resistance value should
meet technical requirements.
阻值符合技术要求规定
Cycle
performance
循环性能
under 23℃±2℃, battery is discharged at 0.5 C to
cut-off voltage, and put aside for 10 minutes. Then it is
charged at 0.5C to the limiting voltage and cut-off
current of 0.02C, and stored for 10 minutes. Repeating
the above steps to cycle battery.
在环境温度为 23℃±2℃时,电池用 0.5 C 放电放电至终止
电压，搁置 10 分钟；再以 0.5C 充电至限制电压，截止电流
0.02 C；搁置 10 分钟；再按照上述步骤进行下一个充放电
循环
400 cycles capacity retention
rate ≥80%
Swelling rate≦8%.
No obvious difference on battery
surface before and after test.
400 次循环容量保持率≥80%，电池
厚度变化率≦8% ，电池外观相比实
验前无明显差异