Classification and Charging of Cylindrical Lithium Battery
The cylindrical lithium battery has a long history, so the market penetration is very high. The cylindrical lithium battery adopts a quite mature winding process, with high degree of automation, stable product transmission quality and relatively low cost. There are many types of cylindrical lithium batteries, such as 10440, 14500, 16340, 18650, 21700, etc.
Model classification of cylindrical lithium battery
The cylindrical lithium battery is divided into lithium cobaltite, lithium manganate and ternary materials. Each of the three materials has its own advantages. Batteries are widely used in notebook computers, digital cameras, lighting, toy products, electric tools, portable mobile energy and other fields. There are many types of cylindrical lithium batteries, such as 14650, 17490, 18650, 21700, 26650, etc. Cylindrical lithium battery is more popular in Japan and South Korea, and there are quite large-scale enterprises in China to produce cylindrical lithium battery.
The main model of cylindrical lithium battery is 186501665014500. 18650 means 18 mm in diameter and 65 mm in length. The No. 5 battery is 14500, with a diameter of 14 mm and a length of 50 mm. Generally, 18650 batteries are used more in industry and less in civil use. Common batteries are also used more in notebook batteries and high-end flashlight.
◆ 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 of what we have always called "No.5 battery". This kind of battery is generally 3.7V or 3.2V, with a relatively small nominal capacity, which is a little larger than 10440 battery, generally 1600mAh, with superior discharge performance. The main application fields are consumer electronics, such as wireless audio, electric toys, digital cameras, etc.
16340 battery
16340 battery is a kind of lithium battery with a diameter of 16mm and a height of 34mm. Because the height of the ruler is a little bit shorter and the capacity is not very small, it often appears in high-intensity flashlight, LED flashlight, headlight, laser lamp, lighting lamp, etc.
◆ 18650 battery
18650 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. Therefore, this kind of battery is a better cost-effective battery. Most of the batteries we usually see are this kind of battery, because it is a relatively mature lithium battery, with good system quality stability in all aspects, which is widely applicable to 10kW When the battery capacity around the occasion, for example, in mobile phones, laptops and other small appliances.
◆ 21700 battery
21700 battery is a kind of lithium battery with a diameter of 21mm and a height of 70mm. Because its volume increases and its space utilization ratio increases, the energy density of the single cell and the system can be improved. Its volume energy density is far higher than that of 18650 battery, which is widely used in digital, electric vehicles, balance cars, solar energy lithium battery street lights, LED lights, electric tools, etc.
How to charge a cylindrical lithium battery?
Avoid charging at too high temperature if the cylindrical lithium battery is used in an environment higher than the specified operating temperature, i.e. above 35 ° C, the power of the battery will be continuously reduced, i.e. the power supply time of the battery will not be as long as usual. If you charge the device at this temperature, the damage to the battery will be greater.
Avoid charging in low temperature. If you use lithium battery in low temperature environment, i.e. below 4 ° C, you will also find that the battery life is reduced. Some original lithium batteries of mobile phones can not even be charged in low temperature environment.
The activation of lithium battery does not need a special method. In the normal use of the machine, the lithium battery will be activated naturally.
Shallow discharge and shallow charge are more beneficial to lithium battery. It is necessary to conduct deep discharge and deep charge only when the power module of the product is calibrated for lithium battery. Therefore, the use of lithium-ion power supply products do not have to adhere to the process, everything to facilitate the first, charging at any time, do not worry about the impact of life.
application area
1. Energy storage is mainly used in base station power supply, clean energy storage, power grid energy storage, home optical storage system, etc.
2. Power mainly refers to electric vehicles, electric bicycles, new energy vehicles, etc.
3. Digital mobile phones, tablets, laptops, electric toys, MP3 / MP4, earphones, rechargeable batteries, aircraft models, mobile power supplies, etc.
There are many kinds of lithium batteries and their applications are also various. The cylindrical lithium battery has high energy density and high average output voltage. And its self discharge is small, we should all know that a good battery is very durable, because the cylindrical lithium battery has no memory effect, so it is very durable and has a long service life.
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