Analyze the price trend of lithium batteries

The price of lithium batteries is declining rapidly, and its cost-effective advantages are becoming more and more obvious. From the performance point of view, lithium batteries are significantly better than important competitors such as lead-acid batteries, nickel-cadmium batteries, and nickel-hydrogen batteries, as can be seen from Table 2. Lithium batteries gradually expand the market scale through their performance advantages, and the increase in demand directly leads to the expansion of production and the reduction of manufacturing costs, which in turn stimulates a further increase in demand. In this way, the lithium battery industry has begun a virtuous circle of development. Other secondary batteries are in a vicious circle of declining market demand → decreasing economies of scale → rising costs → further declining market demand. The price trend of lithium batteries can be seen from the price trends of lead-acid batteries, nickel-hydrogen batteries and lithium batteries (Figure 2). Compared with nickel-hydrogen batteries, the price performance of lithium batteries in 2007 exceeded that of nickel-hydrogen batteries, and the absolute unit price in 2009 Lower than NiMH batteries. Compared with lead-acid batteries, the cycle life of lithium batteries is generally more than twice that of lead-acid batteries. In 2014, the price dropped to about twice that of lead-acid batteries. The unit cycle life price of the two batteries is basically the same, and the cost performance is beginning to play its advantages. At the same time, the price of lead-acid batteries has entered an upward channel, and the price of lithium batteries also has room for decline. Therefore, please regard 2014 as a turning point, after which the process of replacing lead-acid batteries with lithium batteries will be significantly accelerated. The cycle life of the lithium iron phosphate battery is consistent with the change law of SOC, and it increases significantly with the decrease of SOC. If the cycle life under 100% SOC is set to 1, then 90% SOC is 1.42, 80% SOC is 2.98, 60% SOC is 6.62, 50% SOC is 12.28, and 30% SOC is 19.44. 100%~30% SOC The relative life rate can be divided into four stages. The soc of the first stage is 100%~90%, and the slope of change is 0.42. The soc is 2:90~60%, the slope of change is 1.56; the stage: the soc is 60%~50%, the slope of change is 5.66; the soc is 4:50~30%, the slope of change is 3.58. In addition, this experiment also found that the change trend of the charging cut-off voltage under the 80%~90% state of charge of constant capacity charging has a certain relationship with the corresponding cycle life. Whether there is a corresponding relationship or what kind of correlation there is still further experimental verification. 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: Organic compounds can be used as cathode materials for lithium batteries