With the increasing popularity of new energy vehicles, the power battery industry has also become hot! The Tesla electric car we are familiar with uses a battery panel composed of 18650 lithium-ion batteries in series and parallel.
Let’s take a look at the production process of lithium batteries
The most understandable 21 production process diagram of 18650 battery.
Negative homogenate
Cathode homogenate
coating
Rolled by roller
slitting machine
bake
winding
into the shell
spot welding
bake
injection
Weld cap
cleaning
dry storage
Check alignment
Shell coding
form into
The assembled battery is given a certain current, so that the positive and negative active materials of the battery are excited, and the electrochemical process that finally makes the battery discharge capacity is called chemical formation. The battery can only be used as a power source after chemical formation.
OCV measurement
normal temperature storage
divide capacity
During the manufacturing process of the battery, the actual capacity of the battery cannot be completely consistent due to technological reasons. Through a certain charge and discharge test, the process of classifying the battery by capacity is called capacity division.
Final Process
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