Low temperature li ion battery performance and application

There are two classifications 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 with 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.The low-temperature lithium battery is divided into a 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

TemperatureCapacity(mAh)Capacity Percent
20℃2352100%
-20℃213790.8%
-30℃206187.6%
-40℃195182.9%

 

5. More details, you can see from the 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 the special industries with the limit working environments.