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A lithium battery is a type of battery using a lithium metal or a lithium alloy as a negative electrode material and using a nonaqueous electrolyte solution. The first scientist to invent a lithium battery was Edison. Of course, people are now completely familiar with lithium batteries, especially the emergence of ESS All-In-One Indoor, which is widely used in vehicles, electric vehicles and other transportation fields, people's attention to lithium batteries has been upgraded to a higher level.
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Lithium battery classification
1. According to internal materials, lithium batteries are usually divided into two categories:
Lithium metal battery: A lithium metal battery is generally a battery using manganese dioxide as a positive electrode material, metallic lithium or an alloy metal thereof as a negative electrode material, and a nonaqueous electrolyte solution.
Lithium-ion battery: A lithium-ion battery is generally a battery using a lithium alloy metal oxide as a positive electrode material, graphite as a negative electrode material, and a non-aqueous electrolyte.
Although the lithium metal battery has a high energy density, it can theoretically reach 3,860 watts/kg. However, since it is not stable enough and cannot be charged, it cannot be used as a power battery for repeated use. Lithium-ion batteries have been developed as the main power battery due to their ability to be repeatedly charged. For example, Lithium-Ion Battery Pack For Golf Cart can be used repeatedly in this case. However, because of its combination with different elements, the composition of the cathode material varies greatly in various aspects, leading to an increase in the industry's disputes over the cathode material route.
2, by purpose; can also be divided into two categories:
The first one is the digital battery, which is the daily mobile phone, tablet, mobile power supply, etc. These are all digital batteries.
The second type is the power battery, which is Tesla, BYD some new energy electric vehicles, and batteries for products such as drones. These batteries require a large amount of instantaneous current, and digital batteries can not meet the instantaneous high current, so this The class is also called a high rate battery, and the price is more expensive than the digital battery.
3, according to the shell material, can be divided into three categories:
The first category, steel-shell batteries, as the name suggests, is that the outer casing is steel.
The second type, the aluminum shell battery, the same shell is made of aluminum.
The third category, polymer batteries, the outer shell is a polymer material, mostly silver, a few manufacturers are doing black, the industry has become black leather.
Lithium battery structure
The lithium battery structure is divided into five parts, namely, positive electrode, negative electrode, diaphragm, electrolyte and outer casing.
(1) The positive electrode of a lithium battery contains an active material, a conductive agent, a solvent, a binder, a matrix, and the like.
(2) The negative electrode of a lithium battery contains an active material, a binder, a solvent, a matrix, and the like.
(3) Lithium battery separator
(4) Lithium battery electrolyte
(5) The lithium battery case contains steel shells, aluminum shells, cover plates, tabs, insulating tape and other hardware.
The production process of lithium batteries is not very consistent with each manufacturer, but most of them are inseparable from these links, specifically as follows: material preparation - homogenization - coating - rolling - slitting - baking Bake - winding - into the shell - laser welding - baking - injection - pre-filling - sealing - cleaning - aging - full inspection - storage - shipping.
Objectively speaking, the lithium battery production process is divided into three major sections, one is the production of pole pieces, the second is the production of batteries, and the third is battery assembly. In the lithium battery production process, the pole piece production is the foundation, the battery core production is the core, and the battery assembly is related to the quality of the lithium battery product. The specific steps of the lithium battery production process include positive electrode drawing, negative electrode drawing, positive electrode sheet, negative electrode sheet, steel shell assembly, liquid injection and testing, and packaging.
The above is a description of the lithium battery. If you are interested in lithium batteries, you can contact us. We are an excellent developer and supplier of innovative intelligent energy storage systems, which can provide you with Rack Mount Li-Ion Battery System. Welcome you.