What types of low temperature lithium batteries are available? Where are they used?

Low temperature lithium batteries are lithium ion batteries that can operate normally in extremely low temperature environments. There are three types of low temperature lithium-ion batteries: low temperature 18650 lithium batteries, low temperature soft pack lithium polymer batteries and low temperature lithium iron phosphate batteries. Low-temperature lithium-ion batteries are divided into: military low-temperature lithium batteries, industrial low-temperature lithium batteries; according to the use of the environment is divided into three series: civilian low-temperature batteries, special low-temperature batteries and extreme environment low-temperature batteries.

Low-temperature lithium-ion batteries are mainly used in: military weapons, aerospace, ballistic vehicle equipment, polar scientific research, cold zone rescue, power communications, public safety, medical electronics, railways, ships, robots and other fields.

Cryogenic lithium-ion batteries are divided into steel-cased cylindrical cryogenic lithium-ion batteries and aluminium-soluble film soft pack cryogenic lithium-ion batteries according to the packaging of the cell shell; liquid, gel and solid cryogenic lithium-ion batteries according to the type of electrolyte. At present, many people often say that the lithium-ion battery basically refers to the liquid cylindrical steel-cased lithium battery or the liquid soft pack lithium battery.

So the following we will respectively get to know the three types of low temperature lithium batteries, as well as their performance comparison, can be more intuitive and clear for customers to identify the advantages of each of the three types of low temperature lithium batteries, customers can choose according to their own needs, to see which low temperature lithium batteries suitable for doing. A, low temperature 18650 lithium battery
Low temperature 18650 lithium battery is a fixed size cylindrical steel shell lithium battery, due to the cylindrical steel shell of 18650 lithium battery using electrolyte is liquid, so the discharge performance in a lower temperature environment is very variable, it is easy to fail.

In low temperature -20 ℃ above, the discharge capacity is more than 75%, if below -20 ℃, the capacity drops sharply, the discharge capacity may be about 40% of the original, below -30 ℃, the battery basically does not work;
In general low temperature environments, 18650 lithium batteries have a certain position by virtue of their low cost;

The battery has no advantage under high current discharge due to its fixed size

The 18650 lithium battery is heavier and has a fixed shape, which is not conducive to the concept of saving space in equipment, given the same discharge performance requirements;

18650 lithium battery maximum capacity is limited, in the same space size, low temperature soft pack lithium battery capacity can be several times;

Second, soft pack low temperature lithium polymer batteries

Soft pack low temperature polymer lithium battery can be manufactured in the shape and size of the space reserved for the equipment, fully enabling the equipment to achieve more ideal practical use requirements, but the disadvantage is also obvious,

its production cost is relatively high, only applicable to equipment that is not price sensitive.

Charging temperature: -20°C ~ +45°C

Discharge temperature: -40°C ~ +60°C

-40°C 0.2C discharge capacity ≥ 80%

-30°C 0.2C discharge capacity ≥ 90%

-40℃ 0.5C discharge capacity≥70%

Outstanding low temperature cycle performance, can achieve 0.2C charging and discharging 300 weeks capacity retention rate of 85% or more

Charging temperature: -20℃ ~ +45℃

Discharge temperature: -40℃ ~ +60℃

-40℃ 3C discharge capacity≥75%

-40℃ 1C discharge capacity≥85%

Three, low temperature lithium iron phosphate battery

Low-temperature lithium iron phosphate battery has a soft package and steel shell two, but currently more soft package form, its cost is more expensive than the steel shell, but better performance. Compared with low-temperature lithium polymer

Batteries, the price is slightly lower, but higher than the low-temperature 18650 lithium battery.

Excellent low temperature working performance: discharging at 0.5C at -40℃, the discharge capacity exceeds 65% of the initial capacity; discharging at 0.3C at -35℃, the discharge capacity exceeds 75% of the initial capacity;

Wide operating temperature range, -40°C to 55°C;

Rechargeable at -20°C;

Flexible in size, alternative designs for the size and shape of the battery can be made according to customer requirements.

Low temperature lithium batteries are widely used due to their light weight, high specific energy and long life. Low temperature lithium batteries are made of special materials and processes and are suitable for use in sub-zero cold environments.

Shenzhen CSIP Secience and Technology Co., Ltd. has been focusing on special batteries, energy storage and comprehensive energy batteries, power batteries, industrial batteries, 3C consumer battery products, research and development, training, production, sales, maintenance and customization, is a national high-tech enterprises, through the ISO9001 quality certification system, with 25 patented technologies, and Google, China Tower, China Electronics and other well-known enterprises to establish a deep Cooperative relationship