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Cylindrical lifepo4 cells is a specific shape of lithium ion battery, that is, lithium iron phosphate battery, is a high-performance secondary battery, widely used in electric vehicles, energy storage systems, power tools and other fields. This kind of battery has attracted much attention for its long life, high safety and environmental friendliness. Its shape is cylindrical, so it is especially called cylindrical lithium battery. This battery uses lithium iron phosphate (LiFePO4) as the positive electrode material and therefore has a unique set of properties and characteristics. In terms of basic characteristics, the nominal voltage of the battery is usually 3.2V, the termination charge voltage is 3.6V, and the termination discharge voltage is 2.0V. This battery has the characteristics of high efficiency output, the standard discharge is 2 ~ 5C, continuous high current discharge can reach 10C, and even in the instant pulse discharge (10 seconds) can reach 20C. This makes it excellent in applications where high power output is required.
cylindrical common specifications of LiFePO4 battery mainly divided according to its diameter and height. On the market, the most common cylindrical LiFePO4 cells specifications are 18650, 26650 and 32650. These numbers represent the size of the battery, where "18650" indicates that the diameter of the battery is 18mm and the height is 65mm; "26650" indicates that the diameter of the battery is 26mm and the height is 65mm. "32650" indicates that the diameter of the battery is 32mm and the height is 65mm. These specifications of batteries have their own characteristics in terms of energy density, charge and discharge performance, and can be selected according to specific application scenarios.
1, battery capacity: Battery capacity is an important parameter to measure how much power the battery can store, usually expressed in mAh (mah) or Ah (ampere-hour). The capacity of the cylindrical LiFePO4 cells varies depending on the specifications and manufacturing process. In general, batteries with larger diameters and heights have higher capacity. For example, 32650-gauge batteries typically have a larger capacity than 18650 gauge batteries.
2, voltage: is another important parameter of the battery voltage, it determines the scope of work and energy output of the battery. The standard operating voltage of a cylindrical LiFePO4 battery is usually 3.2V or 3.3V. In practical applications, the voltage of the battery will change with the charge and discharge process, but it should be carried out within the specified range to ensure the safety and stability of the battery.
3, internal resistance: resistance is produced in the internal resistance of battery in the work, it will affect the battery charging and discharging efficiency and calorific value. Cylindrical LiFePO4 batteries typically have a lower internal resistance, which allows the battery to have a higher energy conversion efficiency and a lower heat output.
4, cycle life: cycle life is one of the important indicators to measure battery performance, it says the battery in the process of charging and discharging cycle stability and service life. The cylindrical LiFePO4 cells has a high cycle life, often reaching thousands or even tens of thousands of charge and discharge cycles, which makes it an advantage in applications that require long periods of use.
5, the safety performance: safety performance is in the battery can not be neglected. The cylindrical LiFePO4 cells adopts safety measures such as multi-layer structure and thermal isolation, so that it can remain stable under abnormal conditions such as overcharge, overdischarge, and short circuit, effectively preventing the occurrence of safety accidents such as thermal runaway of the battery.
6, operating temperature range: working temperature range, is the point at which the battery in normal working temperature range. The cylindrical LiFePO4 cells has a wide operating temperature range, usually between -20 ° C and 60 ° C, which makes it perform well in a variety of environments.
cylindrical LiFePO4 cells excellent cycle life. After 500 cycles, its discharge capacity can still be maintained at more than 95%, which means that the battery has a long service life and can meet the needs of long-term use. At the same time, the battery also has a low self-discharge rate, which can maintain a high charge even when not used for a long time. In addition, safety is another important feature of the cylindrical LiFePO4 battery. Even if the battery is damaged inside or outside, there will be no dangerous situations such as burning or explosion. This is thanks to its unique material structure and design, which allows the battery to remain stable when impacted or squeezed.
Cylindrical LiFePO4 batteries can show unique advantages in the home energy storage scenario. For example, in home energy storage batteries, depending on the load power and use environment, the discharge time may vary from 1 hour to 10 hours, which is equivalent to the discharge rate from 0.1C to 1C. The cylindrical LiFePO4 cells can adapt to this variable discharge demand and maintain stable performance. In addition, the LiFePO4 battery also has a high single unity. Because the cylindrical lithium battery has established a series of international unified standard specification models, its processing technology is mature and perfect, suitable for large-scale, uninterrupted production and manufacturing. This gives the cylindrical LiFePO4 battery an advantage in terms of cost, quality and production efficiency.
so to speak, cylindrical LiFePO4 cells is a kind of excellent performance and security of lithium ion batteries. It has excellent performance in high temperature, cycle life, safety, environmental protection and other aspects, and is suitable for a variety of application scenarios. Despite some limitations, with the continuous advancement of technology and the improvement of the process, it is believed that the performance of the cylindrical LiFePO4 cells will be further improved and optimized. The cylindrical LiFePO4 battery is available in a variety of specifications and a wide range of parametric features. When selecting and using, it should be comprehensively considered according to specific application scenarios and needs to give full play to its performance advantages and ensure safety and reliability. At the same time, with the continuous advancement of technology and the expansion of application fields, the performance and specifications of cylindrical LiFePO4 batteries will also be continuously optimized and updated, providing more possibilities for future energy storage and applications.
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