What is a low temperature lithium battery?

Release time：

2022-12-05

Low temperature lithium battery is a kind of lithium metal battery, and its operating temperature is - 20 ° C to 60 ° C. It can work normally at low temperature, but its charging and discharging efficiency is low. It has the advantages of small volume, high specific energy, good cycle performance and low cost.

What is a low temperature lithium battery?

Low temperature battery is made of special materials and processes, which is suitable for use in cold environments below zero, and the discharge capacity has good working performance. Generally, it is required to work normally in an environment of about - 40 ° C, the discharge capacity is kept above 80%, and the low temperature working temperature can reach - 50 ° C.

The low temperature lithium battery uses VGCF and activated carbon with a specific surface area of (2000+500) m/g as additives and their matching positive and negative electrode materials, and injects special electrolyte with special additives to ensure the low temperature discharge function of the lithium battery. At the same time, the volume change rate is ≤ 0.5% when the battery is stored at 70 ° C for 24h, which has the protection and storage functions of conventional lithium batteries.

Type of low temperature lithium battery:

Low temperature lithium batteries are divided into three series according to their use environment: civil low-temperature batteries, special low-temperature batteries, and low-temperature batteries in other environments:

1. Civil low-temperature lithium battery: 0.2C discharge of - 20 ° C battery accounts for more than 90% of the rated capacity- 0.2C discharge of 30 ° C battery accounts for more than 85% of the rated capacity;

2. Special low temperature lithium battery: - 40 ° C battery 0.2 discharge accounts for more than 80% of the rated capacity;

3. Low temperature lithium battery in other environments: 0.2 discharge at - 50 ° C accounts for more than 50% of the rated capacity;

Application of low temperature tank:

Low temperature lithium batteries have been widely used due to their advantages of light weight, high specific energy and long service life. They are suitable for use in below zero cold environments. They are commonly used in the power supply of military equipment, aviation, aerospace, deep-sea diving equipment, polar scientific research, exploration equipment, cold belt rescue, power supply for disaster relief, cold clothing, and cold shoes.