Application of 18650 lithium ion battery
The 18650 battery life theory is 1000 cycles of charging. Due to the large capacity per unit density, most of them are used in notebook computer batteries. In addition, 18650 is widely used in major electronic fields because of its excellent stability at work: commonly used in high-end strong light flashlights, portable Power supplies, wireless data transmitters, electric thermal clothing, shoes, portable instruments and meters, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.
Advantage:
1. The capacity of 18650 lithium-ion battery is generally between 1200mAh and 3600mAh, while the general battery capacity is only about 800MAH. If it is combined into 18650 lithium-ion battery pack, the 18650 lithium-ion battery pack can easily exceed 5000mAh.
2. Long service life 18650 lithium ion battery has a long service life, and the cycle life can reach more than 500 times in normal use, which is more than twice that of ordinary batteries.
3. High safety performance 18650 lithium ion battery has high safety performance, no explosion and no combustion; Non toxic, pollution-free, ROHS trademark certification; All kinds of safety performance are completed at one go, and the number of cycles is greater than 500; High temperature resistance is good, and the discharge efficiency reaches 100% at 65 degrees. In order to prevent battery short circuit, the positive and negative electrodes of 18650 lithium ion battery are separated. Therefore, the possibility of short circuit has been reduced to the extreme. Protective plates can be installed to prevent overcharge and discharge of the battery, which can also prolong the service life of the battery.
4. High voltage: the voltage of 18650 lithium-ion batteries is generally 3.6V, 3.8V and 4.2V, which is much higher than the 1.2V voltage of nickel cadmium and nickel hydrogen batteries.
5. Without memory effect, it is not necessary to empty the remaining power before charging, which is convenient to use.
6. Small internal resistance: the internal resistance of polymer cell is smaller than that of general liquid cell. The internal resistance of domestic polymer cell can even be less than 35m, which greatly reduces the self power consumption of battery and prolongs the standby time of mobile phone, which can fully reach the level in line with international standards. This polymer lithium battery supporting large discharge current is an ideal choice for remote control model, and has become the most promising product to replace Ni MH battery.
7. It can be combined in series or in parallel into 18650 lithium-ion battery pack 8. It has a wide range of applications, including notebook computers, walkie talkies, portable DVDs, instruments and meters, audio equipment, aircraft models, toys, video cameras, digital cameras and other electronic equipment.
Shortcoming:
The biggest disadvantage of the 18650 lithium-ion battery is that its volume has been fixed, and it is not very well positioned when it is installed in some notebooks or some products. Of course, this disadvantage can also be said to be an advantage. Compared with other polymer lithium-ion batteries, etc. This is a disadvantage in terms of the customizable and changeable size of lithium-ion batteries. And it has become an advantage for some products with specified battery specifications.
The 18650 lithium-ion battery is prone to short-circuit or explosion, which is also related to the polymer lithium-ion battery. If it is relatively ordinary batteries, this disadvantage is not so obvious.
The production of 18650 lithium-ion batteries must have protective circuits to prevent the battery from being overcharged and causing discharge. Of course, this is necessary for lithium-ion batteries, which is also a common drawback of lithium-ion batteries, because the materials used in lithium-ion batteries are basically lithium cobalt oxide materials, and lithium-ion batteries made of lithium cobalt oxide materials cannot have large currents. Discharge, the safety is poor.
The production conditions of 18650 lithium-ion batteries are high. For general battery production, 18650 lithium-ion batteries have high requirements for production conditions, which undoubtedly increases production costs.
Damaite is a one-stop battery supplier, focusing on battery manufacturing technology for 15 years, safe and stable, no explosion hazard, strong battery life, long-lasting power, high charging conversion rate, no heat, long service life, durable, and qualified for production , The products have passed a number of certifications from countries and around the world. It is a battery brand worth choosing.
Post time: Jul-11-2022