How does low-temperature lithium battery realize normal operation in extremely low temperature environment?

The ambient temperature of conventional lithium batteries is -20℃-65℃, but in some extreme environments, such as geological prospecting, aviation military and some other special industries, they need to exceed the limit temperature of -20℃. operation. The specially produced low-temperature lithium battery can operate at -40°C or even lower ambient temperature. After the specially customized pack, the low-temperature lithium battery can be charged and discharged at -50°C. So how does low-temperature lithium battery realize normal operation in extremely low temperature environment? To achieve the low-temperature characteristics of lithium batteries, generally through the following two points to achieve the first, special lithium battery electrolyte, so that it does not solidify in a very low temperature environment. In general, the electrolyte of lithium battery will be solidified in an environment exceeding -25°C and the discharge performance will eventually lose. Therefore, increasing the frost resistance of the lithium battery electrolyte can improve the stability of the lithium battery in a low temperature environment. Second, the special heatable pack structure makes it very difficult to charge lithium batteries at extremely low temperatures. Through the self-heating of the battery pack, the battery body is heated to a rechargeable temperature and then charged. Both polymer lithium batteries and lithium iron phosphate batteries have low-temperature battery characteristics. What are the characteristics of low-temperature products of polymer lithium batteries and lithium iron phosphate batteries? Low-temperature lithium polymer batteries use special rechargeable battery raw materials and innovative manufacturing technology. When charging at a low temperature of -30℃, the charge and discharge capacity is still greater than 80%. Low-temperature lithium polymer batteries have the following advantages. 1. High ultra-low temperature charge and discharge characteristics, at least -50℃ charge and discharge, high efficiency above 60%; under -40℃ natural environment, charge and discharge, charge and discharge capacity of 80%; 2. High-quality low temperature cycle system, at -30℃ Rechargeable batteries in natural environments keep the volume above 85% after 300 cycles; 4. The safety factor is higher than ul/ce/un; 5. Widely used in cold weather and military machinery and equipment. Low temperature lithium iron phosphate battery has the following characteristics: 1. Adopt superposition technology, low internal resistance; 2. Wide operating temperature range, -40 ~ 55 ℃; 3. The battery can be charged at -20c; 4. High safety factor, low temperature phosphoric acid Lithium iron batteries have a longer life; low-temperature lithium batteries are used in special industries. In addition to meeting low-temperature characteristics, the safety and stability of the battery is also particularly important. The manufacturing cost will be higher than that of conventional lithium batteries. Shenzhen Electronics Co., Ltd. is a professional lithium battery PACK manufacturer, which can provide high-quality lithium battery customized PACK technology to meet the production needs of customers with high-quality requirements. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.