What are the types of low-temperature batteries and their low-temperature performance?

At present, low-temperature batteries commonly include low-temperature 18650 lithium batteries, low-temperature polymer lithium batteries, low-temperature lithium iron phosphate batteries, low-temperature nickel-hydrogen batteries and low-temperature batteries. Low-temperature 18650 lithium battery 1, low-temperature 18650 lithium battery Due to the fixed size of 18650 lithium battery, its capacity has always been concerned by many practitioners. In recent years, various lithium battery processing manufacturers have improved their technology and their capacity has increased accordingly, especially like Samsung , Panasonic, LG, Sony, and Toshiba can achieve more than 3600mAh, but the low-temperature performance stability and consistency of the 18650 lithium battery is still in the range of 2600mAh~3000mAh. It is worth noting that many buyers have a misunderstanding that the actual discharge current will be large when the capacity is high, but this is just the opposite: the low temperature performance of 18650 lithium batteries is generally divided into capacity type and rate type, and the capacity type mainly reflects the large capacity. But the discharge current is generally lower than 1C, and the current is small; the rate type can discharge at a large current, but the capacity is lower and the use time is not long. How to distinguish the actual capacity of 18650 lithium battery low temperature performance? The labeled capacity of unscrupulous manufacturers is unbelievable. If you want to know the actual capacity, you have to perform charge and discharge detection through professional detection and test equipment. Therefore, most people don’t know the detailed capacity when they get it, and they can easily be deceived by the seller. Buyers really feel that the capacity is strange, and they can ask the supplier to issue a test report or choose a third-party professional test agency to report. The low-temperature performance price of 18650 lithium battery is directly proportional to the capacity. The larger the capacity, the greater the energy ratio and the more raw materials used, so the price will be more expensive. 2. Low temperature polymer lithium battery The approximate range of low temperature lithium battery currently on the market is as follows: Charging temperature: 0℃~+45℃ Discharging temperature: -40℃~+60℃-40℃ 0.2C discharge capacity ≥80%-30 ℃ 0.2C discharge capacity ≥ 90% -40 ℃ 0.5C discharge capacity ≥ 70% Low temperature cycle performance is outstanding, can achieve 0.2C charge and discharge cycle 300 cycles capacity retention rate above 85% low temperature high rate battery charging temperature: 0 ℃ ~ +45 ℃ Discharge temperature: -40℃~+60℃-40℃ 3C discharge capacity ≥75%-40℃ 1C discharge capacity ≥85% 3. Low temperature lithium iron phosphate battery At present, low temperature is better than the performance of lithium iron phosphate battery The polymer lithium battery is worse. We can know in detail through its charge-discharge performance curve: 4. Due to the material characteristics of low-temperature nickel-metal hydride batteries, the current low-temperature nickel-metal hydride batteries generally operate maturely at -20℃ to 50℃. ℃, it can discharge at a rate of 1 to 5C, and it can also be charged at -30℃. Low-temperature Ni-MH battery product specifications reference table: Ni-MH battery model category voltage diameter (mm) height (mm) weight (g) AAAA series AAAA3001.2V7.842.2-0.46.8±0.3AAA series AAA230-AAA9501.2V1021.0 ~44.45-0.45.5~12.3±0.3AA series AA300-AA25001.2V11.2~14.316.6~50.4-0.48.0~29.6±0.5A series A650-A37001.2V16.628.0~66.6-0.415.8~52.6 ±0.55. Low-temperature battery batteries traditionally refer to lead-acid batteries. Due to material characteristics and environmental pollution, lead-acid batteries on the market are slowly being replaced by lithium batteries or nickel-hydrogen batteries. Therefore, there are basically no lead-acid batteries in the low-temperature category. The important reason is the future market demand, which determines the potential for continued development in this category. 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 article: Where are ternary lithium batteries widely used? How long is its cycle life?