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Special low-temperature lithium-ion batteries are a temperature requirement, especially for low temperature environments below -40 ℃, where the battery is required to discharge at 0.2C and reach over 80% of its rated capacity. The main feature is to have sufficient capacity and be able to work normally at low temperatures.
At present, the commercial and civilian low-temperature lithium-ion batteries on the market have better performance, which are lithium cobalt oxide formula lithium-ion batteries in low-temperature polymer lithium-ion batteries. Many lithium-ion battery manufacturers have developed their own proprietary battery formulas after years of research and development, which have the following advantages in terms of low-temperature lithium-ion battery performance:
(1) High low-temperature discharge performance, with a minimum discharge temperature of -50 ℃ at 0.2C and an efficiency of over 60%; Discharge at 0.2C in an environment of -40 ℃, with a discharge capacity of 80%;
(2) Low temperature lithium-ion batteries have a wide operating temperature range from -50C to 50C;
(3) Excellent low-temperature cycling performance, charged and discharged at 0.5C in an environment of -30 ℃, with a capacity of over 85% after 300 cycles;
(4) High safety performance, UL/CE/UN certified;
(5) Flexible size, customizable in size and shape according to customer needs;
(6) Compared with traditional lithium polymer batteries, it breaks through the discharge temperature limit of -20 ℃~60 ℃.
(7) Capable of mass production, with good battery consistency;
(8) Low temperature lithium-ion batteries can exhibit high current and maintain high capacity at -50 ℃;
(9) Low temperature lithium-ion batteries can still maintain their excellent performance in a working environment of -50 ℃;
(10) Low temperature lithium-ion batteries can be widely used in cold climates and special equipment.
Nowadays, the demand for batteries is increasing, and the requirements are also increasing. There are also various types of batteries, which can be divided into three types from a low-temperature perspective: civilian low-temperature batteries, special low-temperature batteries, and extreme environmental low-temperature batteries. Today, it is important to introduce the characteristics of special low-temperature batteries.
Low temperature lithium iron phosphate battery is a special low temperature battery, which is widely used in equipment, space industry, diving equipment, polar scientific investigation, power communication, public security, medical electronics and other low temperature fields. It has the following characteristics:
Low internal resistance, using stacking technology for more efficient discharge;
Discharge at 0.5C at -40 ℃, with a discharge capacity exceeding 60% of the initial capacity; Discharge at -35 ℃ at 0.3C, with a discharge capacity exceeding 70% of the initial capacity;
Wide working temperature range, with a minimum temperature of up to 40 ℃ and a maximum temperature of up to 55 ℃;
Can be charged at -20 ℃;
Using lithium iron phosphate chemical, with high safety and long cycle life;
UL/CE/UN certified;
The size is flexible, and the size and shape of the battery can be designed separately according to customer needs.
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