Typical application scenarios of lead-acid/lead-carbon batteries. Should lead-acid batteries be eliminated?

In recent years, the development of lithium-ion batteries has been very fast, giving many people the impression that lead-acid batteries should be eliminated when they lag behind. However, in fact, with the introduction and improvement of lead-carbon battery technology, its core competitiveness: low cost (0.6~0.8rmb/Wh) and better life span make it suitable for stationary energy storage, low-speed electric vehicles, and electric bicycles. Many achievements have been made in other fields, and they have become strong opponents of technologies such as lithium batteries. 1) In terms of stationary energy storage, energy storage fields such as photovoltaic power station energy storage, wind power storage, and grid peak shaving, often require batteries with high power density, long cycle life, and low price. Lead-carbon batteries have a greater competitive advantage in occasions with ample space and high cost requirements, and relatively low investment costs. Because of its high energy density and high cost, lithium batteries are more suitable for use in occasions where space is required and the cost is not so sensitive. It will be more developed in distributed energy storage applications. Compared with other energy storage technologies, such as capacitors (the energy storage density is very low and can only be used for power buffering), flow batteries (the technological maturity is medium, the volume is obviously too large), the lead-carbon technology still has a good competitive strength at this stage . Why lead-carbon batteries are heavier than lead-acid batteries. Lead-carbon batteries are used for stationary energy storage. 2) In terms of vehicle energy storage, the important competitive advantages of lead-carbon batteries are low cost, stable performance, and good safety. A. The low cost makes it always have an advantage in low-speed electric vehicles and other low-end markets. Although the country has the idea of u200bu200bpromoting lithium batteries, after all, the laws of the market must be respected. B. Stable performance enables lead-carbon batteries to always provide reliable protection under extreme conditions such as high and low temperatures. For example, car start-stop power supplies must be able to output large currents at -20°C, while low-temperature performance of lithium-ion batteries has always been common. The old problem of sex. C. Good safety: The safety of transportation cannot be overemphasized. In this regard, lithium batteries have objective shortcomings, and lead-acid-lead-carbon batteries have inherent advantages in this regard. Therefore, the author believes that in recent years, lead-carbon batteries can maintain their dominant position in some subdivisions. Although technologies such as lithium batteries are growing rapidly, these battery technologies all have their own advantages and disadvantages, and no energy storage technology can be used in all scales and scenarios. According to field needs, choosing the right energy storage technology application is the kingly way. Lead-acid batteries are an ancient and practical battery technology. The new generation of lead-carbon batteries that have emerged through the optimization of the introduction of capacitive carbon has become an important help for this magical battery technology to continue the legend in the new era. Cost, performance stability, and safety are the core advantages of this type of battery. Therefore, in the field of stationary energy storage and low-end electric vehicles, it will still have good competitiveness in recent years. Of course, with the continuous advancement of various technologies, we also earnestly hope that more newer and better energy storage technologies will continue to emerge and mature, thereby bringing convenience to our lives.