Production process analysis of lithium battery

Lithium battery is a kind of battery using lithium metal or lithium alloy as anode materials, using nonaqueous electrolyte solution. Scientist Thomas Edison first invented the lithium battery. Now, people are familiar with lithium batteries, especially its wide application in the field of automobile, electric cars and other vehicles. People also pay more attention to lithium battery.

1, according to the internal material lithium batteries are usually divided into two categories:

Lithium battery: the lithium battery is generally use lithium manganese dioxide as positive pole material, metal or its alloy metal anode materials for batteries, the use of water electrolyte solution.

Lithium ion battery: the lithium ion battery is generally use lithium alloy metal oxide anode material, graphite as the cathode material, using nonaqueous electrolyte battery.

Although the high energy density lithium battery, theoretically can reach 3860 w/kg. But because of its nature was not enough stability and not charging, so I can't as the repeated use of the power battery. And because lithium ion batteries are capable of being recharged, being as the main power battery development. But because with the different elements to form the positive materials in various aspects of the performance difference is very big, lead to disputes in the path of the anode materials industry.

Usually we say that the most main power battery lithium iron phosphate batteries, manganese acid lithium battery, cobalt acid lithium batteries as well as ternary lithium battery(3) nickel cobalt manganese

2, according to utility cent; Also can be divided into two categories:

First is the digital battery, is our everyday use of mobile phones, tablets, mobile power and so on, these are all belong to the digital type battery.

Is the second is power battery, tesla, BYD new energy electric vehicles, drones and other products is the use of batteries, these batteries required instant current is very big, digital battery can't satisfy the instantaneous large current, so this class is also called high-magnification batteries, price is digital batteries are expensive.

3, according to the shell material, can be divided into three categories:

The first category, steel battery shell, just as its name implies is the shell is steel.

The second category, aluminum shell battery, the same shell is aluminum material.

The third class, polymer battery, the shell is a kind of polymer material, mostly in the form of silver, one of the few companies do is black, the industry to become black.

4, according to the shape and three categories:

First, cylindrical battery, the use of a lot, like 18650266, 50 and so on, the general combination, combination less can be used as a digital products, like the early laptop, generally 8 18650, mobile power supply, the combination of one to five or six, and tesla's series parallel combination of more than 7000, 18650.

Second, square battery, this class is mostly polymer battery, because the polymer ductility is very good, can make a lot of modelling, high width can be adjusted freely, most digital products are now using this type of battery.

Third, special-shaped battery, it is some strange cell, the shape of the battery will form a complete set according to the requirements of products, such as popular now smart apparel products, such as intelligent hand ring is a ring, so the battery is also made into ring.

Lithium battery structure is divided into five parts, namely, the positive and negative, the diaphragm, the electrolyte and the shell.

(1) lithium battery anode containing active material, conductive agent, solvent, adhesive, such as matrix material.

(2) lithium battery cathode contains active substances, such as adhesives, solvent, substrate material.

(3) the lithium battery diaphragm

(4) lithium battery electrolyte

(5) lithium battery shell contains steel shell, aluminum shell, cover plate, pole ear, insulating tape and other hardware.

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