Introduce the operating temperature range of lithium-ion batteries

The normal working temperature of lithium-ion battery: -20℃~60℃, except that when the temperature is lower than 0℃, the performance of the lithium-ion battery will decrease, and the discharge capacity will be correspondingly low. Therefore, the working temperature of the lithium-ion battery is fully functional. 0~40℃. The temperature of the lithium-ion battery required by some extraordinary situations is different, and some can even run normally at hundreds of degrees Celsius. Generally, polymer batteries whose working temperature can be lower than -20°C are called low-temperature polymer batteries. Low-temperature polymer batteries are classified into ordinary low-temperature polymer batteries with a minimum working temperature of -40°C and ultra-low temperature polymer batteries with a minimum working temperature of -55°C. . Generally speaking, the better the low temperature capability of the low temperature polymer battery, the worse the high temperature performance. These two requirements are contradictory. Many lithium ion battery companies have developed a wide temperature type low temperature battery. The temperature from minus 40°C to minus 70°C is mainly used in products with extraordinary requirements such as automotive electronic equipment. Charging requirements. Lithium batteries must be above 0°C. Otherwise, they will be charged frequently and the battery will be damaged more quickly. There are still safety problems. The discharge is generally at -20~60°C. The battery is sensitive to temperature in the process of use, and the current working temperature range of lithium-ion batteries is -20℃～60℃. Taking lithium iron phosphate with the highest penetration rate in the country as an example, the charging of sub-zero temperature lithium batteries will become difficult, and after charging, the capacity retention rate at 0°C is about 60-70%, and at -10°C it is 40-55%. It is 20-40% at -20°C. When the temperature of the battery is 60 higher than that of the battery, the lithium-ion battery is at risk of overheating and burning and exploding as the battery business heats up. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What is the important difference between lithium ion batteries and traditional lead-acid batteries