Low Temperature Li-ion battery performance and application

There are two classification of the performance, one is storage low temperature li-ion battery, another is discharge rate low temperature li-ion battery.

Low temperature energy storage lithium battery is widely used in military PC, paratrooper device, military navigation instrument, UAV backup start-up power supply, special AGV instrument , satellite signal receiving device, marine data monitoring equipment, atmospheric data monitoring equipment, outdoor video recognition equipment, oil exploration and testing equipment, railway along the monitoring equipment, Power grid outdoor monitoring equipment, military heating shoes, car backup power supply.

Low temperature discharge rate lithium battery is used in infrared laser equipment, strong light armed police equipment, acoustic armed police equipment.

Low temperature lithium battery is divided into military low-temperature lithium battery and industrial low-temperature lithium battery from the application.

0.5C discharge performance test report

One 18650-2200mah cell discharge performance under -20℃ and -40℃

1.testing machineNeware automatic battery test system,Chf constant temperature and humidity test cabinet。

Low Temperature Li-ion battery
Low Temperature Li-ion battery
Low Temperature Li-ion battery
Low Temperature Li-ion battery

2.Battery performancelow temperature li-ion battery 18650CL-2200mAh

Low Temperature Li-ion battery
Low Temperature Li-ion battery

3.Testing method

First,when the temperature is 20℃ ,the battery is charged with  5C current  to 4.2V and discharged with 0.5C current to 2.5V.

Second,when the temperature is 20℃ ,the battery is charged with 0.5C current to 4.2V,and the temperature is -20℃,discharged with  0.5C current to 2.5V.

Third,when the temperature is 20℃ ,the battery is charged with 0.5C current to 4.2V,and the temperature is -30℃,discharged with 0.5C current to 2.5V.

Four,when the temperature is 20℃,the battery is charged with  0.5C to 4.2V,and the temperature is -40℃ ,discharged with 0.5C current to 2.5V.

4.Test data

Temperature Capacity(mAh) Capacity Percent
20℃ 2352 100%
-20℃ 2137 90.8%
-30℃ 2061 87.6%
-40℃ 1951 82.9%

 

5.More details, you can see from test diagram

20℃ test diagram

Low Temperature Li-ion battery
Low Temperature Li-ion battery

-20℃ test diagram:

Low Temperature Li-ion battery
Low Temperature Li-ion battery

-30℃ test diagram:

Low Temperature Li-ion battery
Low Temperature Li-ion battery

-40℃ test diagram:

Low Temperature Li-ion battery
Low Temperature Li-ion battery

Low temperature li-ion battery is used for special industry with limit working environment.

Leave a Comment