Conventional lithium battery ambient temperature of -20 ℃ - 65 ℃, but in some extreme environments, such as geological exploration, aviation and military and some other special industries need to work in more than -20 ℃ lithium battery limit temperature. Specially produced low-temperature lithium batteries can operate at -40℃ or even lower ambient temperatures, and after a special customized pack, low-temperature lithium batteries can be charged and discharged at -50℃.
So how to achieve normal operation of low temperature lithium batteries in extremely low temperature environment?
To achieve the low temperature characteristics of lithium batteries, generally through the following two points to achieve
First, the special lithium battery electrolyte, so that it does not solidify in extremely low temperature environment. Generally, the electrolyte of Li-ion battery will solidify in the environment of more than -25℃, leading to the ultimate loss of discharge performance. Therefore, increasing the anti-freezing property of lithium battery electrolyte can improve the stability of lithium battery in low temperature environment.
Second, the special heatable pack structure, lithium batteries at very low temperatures, charging is very difficult, through the self-generated heat of the battery PACK, the battery body is heated to a rechargeable temperature and then charged.
Lithium polymer batteries, lithium iron phosphate batteries have low-temperature battery characteristics of products, lithium polymer batteries and lithium iron phosphate low-temperature products, respectively, what are the characteristics?
Low-temperature lithium polymer batteries use special rechargeable battery raw materials and innovative production and manufacturing technology. -30 ℃ low temperature charging, charge and discharge capacity is still greater than 80%. Low temperature lithium polymer battery has the following advantages.
1. High ultra-low temperature charging and discharging characteristics, at least -50℃ charging and discharging, high efficiency of more than 60%; charging and discharging, charging and discharging capacity of 80% in the natural environment of -40℃.
2. High quality low temperature cycle system, charging battery in -30℃ natural environment, maintaining the volume above 85% after 300 cycles
4. safety factor higher than ul/ce/un.
5. Widely used in cold weather and military machinery and equipment.
Low temperature lithium iron phosphate batteries have the following characteristics.
1. low internal resistance by using stacking technology.
2. wide operating temperature range, -40 to 55°C.
3. battery can be charged at -20c.
4. high safety factor and longer life of low temperature lithium iron phosphate batteries.
Low-temperature lithium batteries are used in special industries, in addition to meeting the low-temperature characteristics, the safety and stability of the battery is also particularly important. In the manufacturing cost will be higher than the conventional lithium battery. Shenzhen Ruiding Electronics Co., Ltd. is a professional lithium battery PACK manufacturer, can provide high-quality lithium battery custom PACK process to meet the production needs of customers with high quality requirements.
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