Which is better for lithium-ion batteries and lead-acid batteries?

①Volume energy density: Under normal circumstances, the lead-acid battery pack weighs 16-30 kilograms and has a large volume; while the weight of lithium ion batteries is generally 2.5-3.0 kilograms, and the volume is relatively small. The volumetric capacity density of lithium ion batteries is usually It is about 1.5 times that of lead-acid batteries, so it is easy to ride and transport. The energy density of lithium-ion battery packs is generally 200-260wh/g, and lead-acid is generally 50-70wh/g, so the weight energy density of lithium-ion batteries is 3 to 5 times that of lead-acid. ② Construction cost: The cost of main materials such as positive electrode material, negative electrode material, current collector, barrier, and electrolyte of lithium-ion battery packs is much higher than that of lead-acid batteries. The cost of assembly auxiliary materials and external circuit systems of lead-acid batteries is extremely low. Due to the construction process, the labor cost of lithium-ion batteries is relatively high. In the manufacturing cost, the labor cost of lithium-ion batteries accounts for more than 40%, while the labor cost of lead-acid batteries is generally 10% to 20%. ③Acceptance cost: The machinery and equipment used for the production of lithium-ion battery packs are expensive and costly, and the depreciation and loss of machinery and equipment is large. Lithium-ion batteries are irreversible in most processes in production, while lead-acid batteries are reversibly repaired and reused. The acceptance cost of lead-acid batteries after utilization is more than 40%, while the acceptance cost of lithium-ion batteries is almost zero. ④Utilization life: the cycle times of ternary power lithium-ion batteries are usually more than 1,000 times, the cycles of lithium iron phosphate batteries are more than 2,000 times, and the cycles of lead-acid batteries are usually only 300 to 350 times. Lithium iron phosphate power The capacity of the lithium battery cell is still greater than 80% after 2000 cycles, and the 3C cycle life reaches more than 800 cycles. Therefore, the service life of lithium-ion batteries is 3-6 times that of lead-acid batteries. ⑤Value: At present, lithium-ion batteries are more expensive than lead-acid in value, about three times higher. However, the united use of life clarifies that the cost of investment in communication is still longer than the use cycle of lithium-ion batteries. ⑥ Applicability: Lithium-ion batteries are slightly less safe than lead-acid batteries, so various safety precautions must be taken during use, such as preventing damage to lithium-ion batteries by external forces or disturbances, because this may cause fire or Explosion; the current temperature compatibility of lithium-ion batteries is also very good, so in other adaptability, lithium-ion batteries are by no means inferior to lead-acid batteries. ⑦National policy: Lead-acid batteries are very harmful to the situation due to production links or discarded batteries. Therefore, in terms of national policy guidelines, the expansion of lead-acid batteries has been restricted, or lead-acid batteries have been restricted on certain scales. Utilization of batteries. However, lithium-ion batteries are green and environmentally friendly batteries, and there is no pollution in the production process. In the future, the trend of replacing lead-acid batteries with lithium-ion batteries will double and the progress will gradually accelerate. 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: What are the essentials for correct charging of lithium-ion batteries?