1. One of the prerequisites for special low-temperature batteries is that the larger the capacity and the lighter the weight, the better;
Currently, there are various types of low-temperature batteries, each with its own advantages and disadvantages. Only a few types of batteries meet the requirements: polymer lithium-ion batteries, lithium iron phosphate batteries, and ternary lithium cobalt oxide batteries. Among these three types of low-temperature lithium-ion batteries, polymer lithium-ion batteries have the highest energy density and are the lightest, followed by ternary lithium cobalt oxide batteries, and finally lithium iron phosphate batteries.
2. Low-temperature lithium-ion batteries used by the military must meet certain testing standards.
Regardless of whether the equipment is used in civilian, specialized, or industrial applications, battery safety is a crucial factor that must be considered. The only difference lies in the varying safety standards required for different uses and application environments. Special low-temperature lithium-ion batteries have particularly high safety requirements. Firstly, the battery must withstand a gunshot test without exploding or igniting. Secondly, it must ensure safety during high-intensity collisions and impacts, preventing injury or death.
3. Specifications for special low-temperature lithium-ion batteries should include specific charging requirements at certain temperatures:
Because low temperatures severely damage battery performance, charging batteries in such environments is a challenging technical process. Specialized low-temperature lithium batteries are typically charged indoors outdoors, with operating temperatures often around -20°C. Therefore, specialized low-temperature batteries must meet this fundamental requirement. Especially when charging outdoors, temperatures should be around -40°C for optimal performance.
4. The standard for special low-temperature batteries should be to ensure a certain service life.
Low temperatures can severely damage rechargeable batteries, and battery lifespan has always been a major concern. The primary impact of low temperatures on batteries is the lithium plating problem. If the manufacturing process does not meet certain requirements, the excessively rapid lithium plating rate will significantly shorten the lifespan of low-temperature rechargeable batteries. Although low-temperature lithium batteries use special raw material formulas, their lifespan is still significantly different compared to lithium batteries produced at room temperature. Therefore, the lifespan requirement for special low-temperature lithium-ion batteries is generally one year or longer.
5. Transportation safety regulations.
The safety regulations for transporting special low-temperature lithium-ion batteries are higher than those for general export transport vehicles. This is because the transport environment for special batteries is more complex, and the vibration of a single object is more intense than that of other objects. When subjected to vibration, the lithium cells inside the battery are less likely to experience short circuits or other malfunctions.
