The electronic devices we use every day can be powered by one of the most common batteries in the world, Lithium Ion (Li-Ion) Batteries. These small and lightweight batteries power laptops, cell phones, and many other types of modern technology, but their assembly is actually quite complex. Li-Ion Batteries are made up of many different components that all need to work together to create a functional battery that can be used again and again.
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Lithium Ion Battery Assembling Process
Usually, all electrodes except cathode is assembled first, then powder coating process is followed by assembly of cathode and anode. Cathode sheet and anode sheet will be punched and stacked into pouch which will be folded with separator into cell. During Lithium Ion battery assembling process, first of all positive electrode (anode) is stacked on negative electrode (cathode), then pressed several times until electrode materials are firmly contact with each other.
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And then electrolyte solution (mixture of polyelectrolytes in organic solvent) is applied to all over electrodes, it's done for two reasons:
1. It prevents oxidation of metal particles at surface of anode;
2. Conductivity improvement through applying electrolyte between electrodes' surface and separator wall make it possible for current flow between them. After that, Heat sealing is used to weld (heat-weld) both ends of cathode cavity on aluminum foil at bottom of Lithium Ion battery pack to seal out atmosphere from inside.
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Because exposure to air or water may affect capacity of battery when being used later. Positive electrode plate, negative electrode plate, separator and plastic backing plate form a sealed cavity without any contact with outside atmosphere which can maintain sufficient voltage when installed later. After batteries are heat sealed, if needed, electrical test devices can be connected to electric terminals. Then pressurized gas charging starts.
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Pressure must reach twice as much as pressure during normal working process while charging time must not exceed 30 hours or cycle life of battery will decrease rapidly. Charging pressure depends on kind of materials used in electrode products but there’s no explicit regulation about it in official standards so that manufacturers tend to use lower than its standard pressure when making Lithium Ion batteries.
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Benefits:
The lithium ion battery, which is also referred to as a Li-ion or Li-Ion, provides high energy density and power to weight ratio. These batteries are very well suited for both consumer and industrial applications such as laptop computers, cell phones, cordless power tools, medical devices and hybrid electric vehicles. The lithium ion battery does not suffer from a memory effect like many other types of rechargeable batteries do.
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Market Outlook:
A lithium-ion (Li-ion) battery is a rechargeable battery that uses lithium ions as one of its electrochemical components. Due to their expanding use in consumer devices, particularly mobile phones and tablets, the lithium ion battery industry has witnessed a major growth in demand in recent years. These batteries are also utilized in electric vehicles like hybrid cars and battery packs.
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As the need for energy storage grows, these batteries are being used more frequently in grid storage applications. The global lithium-ion battery market is expected to reach $129.3 billion by 2027, with a compound annual growth rate (CAGR) of 18.0% from 2020 to 2027. Higher energy efficiency requirements in technologically advanced consumer electronics are likely to give key companies with a growing lithium-ion battery market potential.
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