Comparison of lithium battery pack and lead-carbon battery pack

(1) Lithium battery pack Lithium battery has the characteristics of high working voltage, high specific energy, small size, light weight and long cycle life. According to the electrode data used, it can be divided into lithium cobalt oxide battery, lithium iron phosphate battery, ternary lithium battery, lithium manganate battery and lithium titanate anode battery. Among them, the commercial application of lithium iron phosphate battery is the most extensive, which is mainly due to its excellent safety performance and good cost performance. At present, the capacity of lithium iron phosphate batteries that can be seen on the market is mainly about a few amperes to 10 amperes, and the battery capacity of mobile energy storage systems is generally about 50 amperes. If the capacity is too small, the number of batteries will be added, which will increase the overall cost of the system at the monitoring points of the series and parallel connections and the battery system. However, large capacity will increase the difficulty of battery production and increase the hidden dangers of battery packs. In mobile energy storage systems, the energy of lithium batteries is generally divided into 500kWh and 1MWh, and the selection of 3.2v50ah lithium iron phosphate batteries is completed in series and parallel. In order to meet the DC voltage input requirements of the energy storage type bidirectional converter, the battery voltage is around 500~600V. (2) Lead-carbon battery Lead-carbon battery is a new type of battery developed in recent years. According to its electrochemical reaction principle, lead-carbon batteries are lead-acid batteries. However, due to the addition of capacitive carbon data in the negative electrode, the charge-discharge function and cycle life of lead-acid batteries are much higher than that of ordinary lead-acid batteries. Together, the recovery of lead resources in lead-carbon batteries is very high, and lead recycling can be completed. Even if the life of lead-carbon batteries ceases, they have great commercial value. Excellent performance, high safety, outstanding cost-effective advantages and potential commercial value make lead-carbon batteries widely used in the fields of new energy and energy storage. Lead-carbon batteries have a large single capacity, generally 500~1000Ah, and the nominal voltage of the battery is 2V. In mobile energy storage systems, the energy of lead-carbon batteries is generally divided into 500KWh, 1MWh, 1.2mwh and 1.34mwh. The battery voltage is about 600-700v, select 2V500Ah or 2V1000Ah battery series and parallel to complete. Compared with lithium batteries, lead-carbon batteries with the same capacity have lower cost and better environmental adaptability. In summary, due to the small number of monomers and the few monitoring points of the battery management system, the cost of the entire system is low. However, compared with lithium batteries, lead-carbon batteries are larger and have larger components, so energy storage systems based on lead-carbon batteries take up more space and are less mobile. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.