Introduction to high temperature lithium battery

As the earth's temperature is getting higher and higher, we have increasingly higher technical requirements, especially in some special high-temperature environments or the use of lithium batteries in vehicle-mounted products in summer. This will be a test of lithium battery materials and design. In the recent years of making lithium batteries, as the use of lithium batteries has become more and more diversified, with requirements for waterproof, explosion-proof, high temperature, low temperature, space use, etc., lithium battery experts are also actively testing to break through , The current high-temperature lithium battery is as follows as a preliminary analysis; the scope of use: outdoor lamps, high-voltage line robots, monitoring equipment, vehicle-mounted equipment batteries, vehicle-mounted canopy batteries, boiler use equipment. The common problems are: the battery swells, the battery life is seriously attenuated, and the battery has no voltage; the above problems have several important problems: 1. The user has not explained the usage scenario with the manufacturer, and only supplies the conventional voltage capacity requirements. The lack of supply of temperature requirements, current requirements and other special requirements resulted in the battery design performance not meeting the actual requirements; 2. The battery manufacturer did not have the ability to process high-temperature batteries, and the battery’s positive electrode active material should be made of high-temperature lithium cobalt oxide. The electrolyte must be a high-temperature electrolyte, the battery diaphragm must be a high-temperature resistant ceramic diaphragm, and the processing technology and formula must be a formula summed up through a large number of experiments; detection standard: the battery is fully charged in a constant temperature box, and the temperature is adjusted to 80 ℃. When the temperature in the box reaches 80℃, put the battery in a thermostat for 4 hours, and start to discharge with 0.2C current. When the battery is discharged, the battery has no obvious gas expansion; after cooling, the battery is overflowed, and the battery is discharged. The discharge capacity and time are not clearly reduced, and the appearance is not damaged, which proves that the battery's high-temperature performance is qualified. If swelling or life degradation occurs, it means that the battery's high-temperature performance does not pass. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of soft-pack polymer lithium battery