The best 21 18650 battery production flow charts

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 best 21 18650 battery production flow charts

The most understandable 21 production process diagram of 18650 battery.

Negative homogenate

image 27

Cathode homogenate

image 28


image 29

Rolled by roller

image 30

slitting machine

image 31


image 32


image 33

into the shell

image 34

spot welding

image 35


image 36


image 37

Weld cap

image 38


image 39

dry storage

image 48

Check alignment

image 41

Shell coding

image 42

form into

image 43

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

image 44 2

normal temperature storage

image 45 767x1024 1

divide capacity

image 46

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

image 47

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