18650 lithium battery knowledge complete analysis
Author: Source: Datetime: 2016-11-24 15:26:24
More than and 300 years ago, Benjamin Franklin began to catch lightning, open the understanding of lightning, also open the understanding of electricity, since that time, there are a lot of people to consider how to capture the power storage battery, and gradually this kind of thing has, indeed, as a very important the invention of history, the battery appeared really solve a lot of problems, improve the efficiency of all kinds of life greatly, and the emergence of lithium battery makes it harder for people to understand more deeply the power, 18650 lithium battery is used for a long time, a lithium battery and the still existing, can see 18650 the shadow of lithium battery in a lot of places, because the battery compared with other batteries, the advantage is obvious, and the safety is also relatively good, it also can be used in solar powered portable generator. Even has been used in large equipment, this paper introduces the knowledge of the 18650 batteries, to explain why there will be an explosion of events.
It is generally believed that the no-load voltage of the lithium battery to 3.0V the following is that the electricity runs out (the specific values need to look at the threshold of the battery protection board, for example, there is low to 2.8V, there are 3.2V). Most of the battery can not be in the no-load voltage below 3.2V, or over discharge will damage the battery (lithium batteries on the market are basically with the use of protective plate, it will lead to excessive discharge protection board does not detect the battery, thus unable to charge the battery).
4.2V is the highest limit voltage battery, lithium batteries will generally no-load voltage charge to 4.2V that is full of electricity, the battery charging process, the battery voltage in 3.7V gradually increased to 4.2V, rechargeable lithium battery can not be charged to the no-load voltage of more than 4.2V, otherwise it will damage the battery, this is the place. Lithium battery special general, 18650 lithium battery has the following advantages.
1, a wide range of use
Notebook computer, portable radios, DVD, instrumentation, audio equipment, aeromodelling, toys, cameras, digital cameras and other electronic equipment.
Can be combined in series or parallel into 18650 lithium battery pack, it can be used in solar power generator systems.
3, small resistance
The internal resistance of polymer batteries with liquid core is small, the internal resistance of domestic polymer batteries can even do 35m, greatly reducing the power consumption from the battery, prolonging the standby time of mobile phone, can reach the level of international integration. This supports a large polymer lithium battery discharge current is the ideal choice of remote control model, become the most promising alternative battery products.
4, there is no memory effect
Before charging the remaining power will not short, easy to use.
5, high voltage
18650 voltage of lithium batteries are generally in 3.6V, 3.8V and 4.2V, the 1.2V voltage is much higher than that of nickel cadmium and nickel metal hydride battery.
6, high safety performance
18650 lithium battery safety performance is high, no explosion, no burning; non-toxic, no pollution, through the RoHS certification mark at all; safety performance, cycle number is greater than 500 times; good temperature resistance, discharge efficiency under the conditions of 65 degrees up to 100%. In order to prevent the battery short circuit phenomenon, the positive and negative of the 18650 lithium battery are separated. So it is possible to have a short circuit phenomenon has been reduced to the extreme. Can be installed to protect the board, to avoid excessive battery charging, so that can also extend the life of the battery.
7, long service life
18650 lithium battery life is very long, the normal use of the cycle life of up to more than 500 times, is more than two times the average battery, it can be used in solar backup generator.
8, large capacity
18650 lithium battery capacity is generally between 1200mah~3600mah, and the battery capacity is only about 800, if the combination of 18650 lithium battery to 18650 lithium batteries, 18650 lithium battery that is casually can break 5000mah.TAG: Fisker cobalt Eon CATL Ceramic Combinations KW 250 SCiB Batter Toshiba -Lithium Shared Show Pack
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