
低温快充锂电池充放电性能说明
充放电性能
NO.
Items
Test Method and Condition
Criteria
1
Standard Charging
标准充电
Charging the cell initially with constant current at 0.5C and then with constant voltage at 4.2V till charge current declines to 0.05C
先用0.5C恒流充电至4.2V,再恒压4.2V充电直至充电电流≤0.05C
2
Initial Capacity
初始容量
The capacity means the discharging capacity of the cell, which is measured with discharging current of 0.2C with 3.0V cut-off voltage after standard charging.
该容量是指标准充电后,0.2C放电至3.0V截止电压所放出的容量。
≥ 2800mAh
3
Discharging at High-
Temperature
高温放电
1) Standard Charging标准充电
2) Put the cell into 80±2℃ high temp oven for 2 hours and discharge at 0.2C CC to 3.0V at the high temperature. 在80±2℃的高温箱中恒温2h,在该温度下0.2C恒流放电至3.0V。
Discharging capacity初始容量85%
4
Discharging at Low Temperature
低温放电
1) Standard Charging标准充电
2) Put the cell into -40±2℃ high temp oven for 4 hours and discharging at 1C CC to 2.5V at the high temperature.
在-20±2℃的高温箱中恒温4h,在该温度下1C恒流放电至2.5V。
Discharging capacity初始容量60%
5
Cycle Life
循环寿命
A battery unit shall be repeated 100 charge/discharge cycles, charged at CC-CV 0.5CmA to 4.20V , laying the battery 5min, discharged at 0.5CmA to3.0V end voltage,After 400 cycles,recording the discharging capacity
电池用0.5CmA恒流恒压充饱电至4.2V,搁置5min,用0.5CmA电流放电到3.0V,记录放电容量,循环400次.
Nominal capacity标称容量
Cycle life循环寿命≥400 times次
6
Self-discharge
自放电
After the standard charging, storied the cells under the condition as No.6.4 for 28 days, then measured the capacity with 0.5C till 3.0V
标准充电后,在No.6.4条件下贮存28天,再以0.5C放电至3.0V所放出的容量。
Residual capacity:>90%
余容量:
>90%
7
Initial impedance of cell
电芯初始内阻
Internal resistance measured at AC 1KHz after 50% charging
半充状态下,测量其AC 1KHz下的交流阻抗
≤ 20mW
8
Cell Voltage
电芯电压
As of shipment.
出货状态
3.8V~4.1V
9
Temperature
Characteristics
温度特性
1. According to item 5.5, at 20±5℃.
2. Capacity comparison at each temperature, measured with constant discharge current 1C with3.0V cut-off. Percentage as an index of the capacity compared with 100% at 20℃
1.在20±5℃条件下,用5.5方法将电池充电。
2.在不同温度条件下,用0.5C的电流恒流放电至截止电压3.0V。以20℃时放电容量为基准计算百分比。
-20℃: ≥60%
20℃: 100%
50℃: ≥85%
10
Storage
Characteristics
储存特性
1. According to item 5.5, at 20±5℃.
2. The battery shall be stored at 50±5℃ for 7days and rested at room temperature for 1 hour then measured with constant discharge current 1C with 3.0V cut-off.
1. 在20±5℃条件下,用5.5方法将电池充电。
2.将电池在50±5℃条件下贮存7天,然后在常温下静置1小时,用0.5C的电流恒流放电至3.0V截止电压。
Retained Capacity
≥85%
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(以上价格仅供参考,具体价格以实际详谈为准。)
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