18650 lithium battery 18650 lithium battery repair research methods and uses

18650 Lithium Battery parameters

The overall structure of the 18650 lithium-ion battery is as follows:

The nominal voltage of a single section is generally 3.6V or 3.7V.

Charging voltage: 4.20V (4.2V-4.3V for lithium cobalt)

The small discharge termination voltage is generally 2.75V V, 18650 pack builder below this voltage, the battery capacity will be seriously reduced or even scrapped.

Charging time end working voltage: 4.20V

The diameter is 18 ± 0.2 mm

Height :65±2.0 mm

Capacity: more than 1000 Mach, some brands will mark 3600 Mach or 4500 Mach and other amazing capacity, battery manufacturing machine the current 18650 battery capacity * is Sanyo, can do 3100 Mach, but the price is not low.

18650 lithium battery repair method

1, lithium battery repair research method one

Use an eraser or other cleaning tool to remove surface rust.

Lithium battery repair method principle 1;

The use of a long time lithium-ion battery metal surface will have a certain degree of oxidation, li ion battery construction resulting in poor contact between the mobile phone battery and the mobile phone, lithium-ion battery use time is short, you can use rubber or other cleaning tools to wipe the rusty surface of the material, so that the battery and the mobile phone better contact.

2, lithium battery repair method 2

Take down your battery after all use up, handle with temperature, the battery in the case of unstable temperature control will greatly shorten the different time we use, because this battery is no electricity and has a very important part of lithium-ion technology has been developed with memory electricity with this method can make working memory electricity release part, winter is coming, Leave it outside for a while, then bring it inside.

Lithium battery repair principle Method II:

The low temperature can change the electrolyte in the lithium battery, promoting the chemical reaction of the battery that has just been frozen. The use of lithium batteries is actually a process of charging and discharging. During this time, the negative and positive charges in the battery collide with each other. The reason why the battery is becoming more and more useless is that at normal room temperature, the kinetic energy inside the electron is relatively large, so the battery is in an active state and leakage is more frequent. When the lithium battery is placed in a low temperature environment, the microstructure of the lithium film and electrolyte on the surface of the lithium battery, as well as their interfaces, will significantly change, resulting in temporary inactivity inside the battery and reduced leakage current. So after the recharge, the waiting time of the phone will increase.

3, Lithium battery repair method 3

There is another method, take off the battery, put it for about a week, and slowly consume the electricity, which needs to be completely consumed by the machine first. Then full charge, it is estimated that your current charging time must be very short, after full charge, disconnect and charge again, repeated several times, absolutely effective.

The principle of lithium battery repair research method three:

Lithium batteries have a cycle life of about 600 times. If the number of charges is large, the thermal motion of the molecule will gradually destroy the arrangement of the internal structure of the molecule, and the efficiency of storing charges will gradually decrease. The freezing process can easily destroy the original internal structure of the battery, which can improve the charging capacity in a short period of time, but long-term use may not be effective. Once the microstructure of lithium-ion batteries is destroyed, it is impossible to fully recover, and long-term use of this method will accelerate the loss of mobile phone batteries.

The third principle of the lithium battery repair method: The deep discharge of the mobile phone is to achieve a deeper level of recharging by exhausting the internal energy, which requires some unconventional methods. Find a way to connect the mobile phone to a small 1.5V light bulb, and the electricity inside the lithium battery will be conducted to the small light bulb until all discharge. The phone needs to slowly drain its battery through low voltage. Under normal circumstances, if the phone connection is below the rated voltage of 3.6 volts, it will automatically shut down. After discharging, a recharged phone battery can last longer.

18650 Lithium battery usage

The number 18650 represents the external size :18 refers to the 18.0mm battery diameter, 650 refers to the 65.0mm battery height, the common 18650 battery is divided into lithium-ion batteries, lithium ferrous phosphate batteries and nickel-metal hydride batteries. The voltage and capacity specifications are respectively nickel-metal hydride battery voltage 1.2V, ordinary capacity 2500MAH, lithium-ion battery voltage 3.6V, ordinary capacity 1500MAH-3100MAH.

The 18650 battery life is theoretically charged 1000 times for the circulatory system. Because the capacity of the enterprise unit value density can be very large, it is often used for most notebook batteries. In addition, because 18650 has very good stable working performance in the work, it is widely used in major network electronic technology fields in China: Commonly used in the production of high-grade light flashlight, portable power supply, wireless information data transmission, electric warm clothes, shoes, portable instruments, portable lighting control equipment, portable printers, industrial development instruments, medical instruments and so on.

　　Generally, 18650 batteries are used in industry more, civil less, and commonly used for notebook batteries and high-end flashlights.