Which battery is better than lead-acid battery

The cost of main materials such as cathode materials, anode materials, current collectors, separators, and electrolytes of lithium-ion batteries is much higher than that of lead-acid batteries. The cost of assembly auxiliary materials and external circuit systems for lead-acid batteries is extremely low. Due to the manufacturing process, the labor cost of lithium-ion batteries is relatively large. 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%. The machinery and equipment used in the production of lithium-ion batteries are expensive and valuable, and the depreciation and loss of machinery and equipment is large. Most of the processes in the production of lithium-ion batteries are irreversible, while lead-acid batteries are reversibly repaired and reused. The recycling value of lead-acid batteries after use is more than 40%, while the recycling value of lithium-ion batteries is almost zero. Regardless of the volume ratio energy or weight ratio of lithium ion batteries, lithium ion batteries are more than 3 times higher than lead-acid batteries. Lithium-ion batteries are smaller and lighter. Long cycle life. The cycle life of lithium-ion batteries used in electric vehicles is generally more than 800 times, and lithium-ion batteries using lithium iron phosphate cathode materials can reach about 2000 times, which is 1.5 to 5 times higher than that of lead-acid batteries. This greatly reduces the use cost of lithium-ion batteries, prolongs the service life, and improves the ease of use. It has a wide range of charging efficiency. This is a unique advantage of lithium-ion batteries. When necessary, the charging time can be controlled between 20min and 1h, and the charging efficiency can reach more than 84%. On the basis of further technological innovation, this feature will be better utilized. We understand that the general comparison of energy storage products should be carried out from the perspectives of weight energy density, volume energy density, service life, price, applicability, and national policies: weight energy density The current energy density of lithium-ion batteries is generally 200~260wh/g , The lead acid is generally 50~70wh/g, then the weight energy density lithium ion battery is 3~5 times that of the lead acid, which means that under the same capacity, the lead acid battery is 3~5 times that of the lithium ion battery. Therefore, lithium-ion batteries have an absolute advantage in the lightweight of energy storage devices. Volume Energy Density The volume capacity density of lithium-ion batteries is usually about 1.5 times that of lead-acid batteries, so with the same capacity, the volume of lithium-ion batteries is about 30% smaller than that of lead-acid batteries. The most popular material systems for service life are ternary and iron-lithium. The cycle times of ternary power lithium-ion batteries are usually more than 1,000 times, the cycle times of lithium iron phosphate batteries are more than 2,000 times, and the cycle times of lead-acid batteries are usually Only about 300 to 350 times, so the service life of lithium-ion batteries is about 3-6 times that of lead-acid batteries. Price Currently, the price of lithium-ion batteries is more expensive than lead-acid batteries, about 3 times, but combined with the analysis of the service life and the same cost, the life cycle of lithium-ion batteries is still longer. Applicability Lithium-ion batteries are slightly less safe than lead-acid batteries, so various safety precautions should be done during use, such as preventing external forces or accidents from damaging the lithium-ion batteries, because this may cause fire or explosion; At present, the temperature applicability of lithium-ion batteries is also very good, so in other adaptability aspects, lithium-ion batteries are not inferior to lead-acid batteries. The National Zhengce Lead-acid battery is very harmful to the environment due to the production process or waste batteries. Therefore, in terms of national policy orientation, it has been restricting the expansion of lead-acid batteries or restricting the development of lead-acid batteries in certain areas. In the future, the trend of replacing lead-acid batteries with lithium-ion batteries will become more apparent and the progress will gradually accelerate. 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: Safe use of lithium-ion batteries and precautions for charging and discharging