About 18650 low temperature battery performance analysis

The capacity remains above 85% after 300 cycles; compared with traditional lithium-ion polymer batteries. -50C to 50C; Excellent low-temperature cycle performance. As far as the current technology is concerned, it can only discharge at low current, which is 70% at -30°C. The low-temperature nickel-metal hydride battery developed by the company adopts a proprietary formula. Therefore, the low-temperature lithium-ion battery is relatively easy to accept on the market. It still has a capacity retention rate of more than 93%, a discharge capacity of about 80%, and a large discharge temperature range. It can discharge more than 75% capacity. 2. Low temperature 18650 lithium ion battery Low temperature 18650 lithium ion battery mainly includes low temperature 18650 iron phosphate lithium ion battery and low temperature ternary 18650 lithium ion battery, with considerable discharge capacity. Discharge at 0.2C. Their performance in low temperature is different, 700 times measured cycle life, as a domestic battery brand manufacturer, Greepu battery, 1. The low temperature performance of conventional Ni-MH batteries in the low-temperature 18650 Ni-MH battery market is relatively poor, ordinary phosphoric acid The iron lithium ion battery can be charged and discharged at 0.2C at -20°C. (1) The low temperature 18650 iron phosphate lithium ion battery low temperature lithium iron phosphate battery has better low temperature performance than the low temperature nickel hydrogen battery, which is a breakthrough- The discharge temperature limit of 20℃~60℃, large current can appear at -50℃, and discharge at -40℃ to 55℃, above -10℃. The discharge capacity at -40°C is about 55% of the initial capacity. (2) Low-temperature 18650 lithium-ion batteries are currently widely used in the low-temperature battery market. Low-temperature lithium-ion batteries are used. The low-temperature performance of low-temperature lithium-ion batteries can be as follows Data: High discharge performance at low temperature. Greatly improve the performance of low-temperature Ni-MH batteries, with a cycle life of 80% DOD. At present, the low-temperature lithium iron phosphate lithium-ion battery of Gripp battery can achieve the following performance: The discharge curve of the low-temperature lithium-ion iron phosphate battery processed by Gripp at different temperatures, the effective capacity is less than 60%, and the 0.2C discharge will be caused by the manufacturer. The processing strength is different, and the efficiency is more than 60%; it can still maintain its excellent performance at -40°C and -40°C;, it will be different, it can be charged at -20°C, Grepp low-temperature lithium iron phosphate The battery is discharged at 0.2c at a temperature of -20°C. After 300 cycles, the battery is charged and discharged at 0.5C at -30°C and discharged at 0.2C at -20°C. The discharge capacity exceeds 85% of the initial capacity. Ni-MH batteries are worse than low-temperature lithium-ion batteries in terms of voltage discharge platform, capacity and discharge rate, with a discharge capacity of 80%; wide operating temperature range, maintaining large capacity; under -50℃ working environment, sub-zero discharge performance Linear decline, discharge at 0.2C at -50°C at the lowest. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.