Cylindrical lithium battery is a more common type of lithium battery, the use of steel-cased cylindrical lithium battery durability and safety are higher than the soft pack lithium-ion batteries. According to the material can be divided into lithium cobalt acid battery, lithium manganate battery, ternary battery. Cylindrical lithium batteries of different materials have different advantages. Cylindrical lithium-ion batteries are commonly used in notebook computers, cameras, lighting equipment, electric toys, hardware tools, handheld mobile energy and other fields. In addition, cylindrical lithium-ion batteries are more suitable for high-volume automated combination production, electric bicycles, electric motorcycles, high-volume lithium-ion batteries are basically cylindrical lithium-ion battery production, what are the varieties of cylindrical lithium batteries, what are the types and differences of cylindrical lithium batteries? Cylindrical lithium batteries and what other advantages
(A) types of cylindrical lithium batteries
(1) 16340 battery
16340 battery is a diameter of 16mm, the height of 34mm lithium battery, this battery is a little shorter due to the height of the ruler, and the capacity is not very small, so it is often found in strong flashlights, LED flashlights, headlamps, laser lights, lighting fixtures, etc.. Some primary batteries are used in communication equipment, or electronic measuring instruments.
2）18650 battery
18650 lithium battery is a kind of lithium battery with a diameter of 18mm and a height of 65mm, its biggest feature is that it has a very high energy density, almost 170 watt hours / kg, so this battery is a better cost performance, we usually see most of this battery, because it is a more mature lithium battery, all aspects of the system quality stability is better, widely used in 10 Kilowatt-hour or so battery capacity occasions, high-performance batteries for notebook computers are basically used 18650 lithium-ion batteries as a power source. Power tools and electric vehicles also use a large proportion of 18650 lithium batteries as a combination. The majority of flashlights use 18650 single battery, in short, 18650 lithium-ion batteries are the most common in life, the highest frequency of use of lithium battery models.
3) 21700 battery
21700 battery is a diameter of 21mm, height of 70mm lithium battery, because of its increased volume, space utilization becomes larger, cell monomer and system energy density can be improved, its volume energy density is much higher than 18650 type battery, 21700 lithium-ion battery is as 18650 lithium battery upgrade, higher capacity storage than 18650 lithium battery makes its Performance is a bit stronger, Tesla electric car in the early use of 18650 lithium-ion batteries, after the basic use of 21700 lithium batteries as a replacement for 18650 lithium batteries. 21700 batteries are also widely used in power tools and everyday electric equipment.
4）10440 battery
10440 battery is a 10mm diameter, 44mm height of lithium batteries, and we are often called "No. 7 battery" size, the size of this lithium battery equivalent to No. 7 battery capacity is generally very small, only a few hundred mAh, mainly used in mini electronic products. For example, flashlights, mini stereos, amplifiers, etc.
5）14500 battery
14500 battery is a kind of lithium battery with a diameter of 14mm and a height of 50mm, which is also the size we have been called "No. 5 battery", this kind of battery is generally 3.7V or 3.2V, the nominal capacity is relatively small, a little larger than 10440 battery, generally 900mAh, with superior discharge performance. The most important application areas are consumer electronics, such as wireless audio, electric toys, digital cameras, etc.
Advantages of cylindrical lithium battery
1. Cylindrical lithium batteries have formed a series of standard specifications and models that are unified internationally, and the process is more mature and suitable for continuous production in large quantities.
2. Cylindrical lithium batteries are generally sealed batteries, so there is no maintenance problem during use.
3. The lithium battery shell has high pressure resistance, and there is no phenomenon such as square and soft packing battery expansion during use.
4. The cylindrical body has a large specific surface area and good heat dissipation.
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