Advantages and disadvantages of cylindrical lithium batteries

Common battery forms are usually cylindrical. Cylindrical batteries are widely used, mainly because of the high safety performance of the steel shell structure and the reliable structure and other characteristics that are favored by the market. The more common types are 14500, 18650, 21700, 32650, etc., batteries Commonly used in: laptop computers, digital cameras, lighting equipment, children's toy enterprise products, pneumatic tools, portable mobile energy and other fields; advantages of cylindrical lithium batteries: 1. Good single consistency, in other words, it can be produced in large quantities Manufacturing, production and processing, battery manufacturers have mature and perfect technology. Cylindrical lithium batteries have a high production capacity per day. 2. Cylindrical lithium batteries have high durability and are not easy to explode. The single itself has good mechanical properties. Compared with square and soft-pack batteries, closed cylinders , Under the similar size, the highest bending strength can be obtained; the sealing performance is good, and it is not easy to explode. The technology is mature and the cost is low, but at the same time, the space for optimizing production costs has already been consumed almost; 3. The energy density is high and the single energy is small. When a safety accident occurs, the form is easy to control, but this is also becoming a replacement. The reason (how do you say that popular saying, what makes you successful will also destroy you, and what can’t kill you will also make you strong, the same thing is true) 4. The small internal resistance greatly reduces the self-consumption of the battery Electricity, to increase the battery life of smart phones, can also reach the level of international standards. This type of polymer lithium battery compatible with large discharge currents is an ideal choice for remote control models and becomes the most promising enterprise product to replace nickel-metal hydride batteries. 5. Wide range of use: laptop computers, handheld walkie-talkies, portable disc players, instrumentation equipment, audio equipment, model airplanes, laptop computers, digital cameras, lighting equipment, children's toy business products, pneumatic tools and other electronic equipment, as a family of lithium batteries The 18650 battery was widely used in consumer electronic products in the early years. In recent years, with the strong rise of new energy electric vehicles, 18650 batteries have also begun to be used in the new energy electric vehicle industry. Disadvantages of cylindrical lithium battery: 1. High-level software level of cylindrical lithium battery single system. In the context of new energy electric vehicles, the number of single cylinders of battery system software is very large, which makes the complexity of battery system software greatly increased, regardless of organization or management system. For the other two types of batteries, the production cost of the system software level of cylindrical batteries is relatively high; 2. The probability of the alienation of cylindrical lithium battery cell characteristics increases. Under the conditions of unbalanced working temperature and environment, the probability of a large number of cell characteristics alienation increases. However, why Tesla chose 18650 at the beginning of the design? I believe it is just a helpless choice. This is because ten years ago, only cylindrical batteries could be mass-produced qualified power batteries. The safety and thermal management requirements of the battery are instead the driving force for the research and development of its powerful electronic control system. 3. The increasing space of energy density has long been very small. The increasing space of energy density has long been very small. Chaowei has achieved a single capacity of 4050 mAh, and the specific energy of the cell is 306Wh/kg. Since then, no higher record has been seen. . In a given space, only by continuously optimizing the materials can there be a better way out. 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: 14500 lithium battery, 14500 lithium battery pack manufacturer