January 12, 2021
Mysterious lithium battery production process, super detailed illustration
Today HOPPT BATTERY takes everyone into the world of "lithium batteries," the cornerstone of modern society.
"Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the harmful electrode material and uses a non-aqueous electrolyte solution. Lithium metal's very active chemical properties, processing, storage, and lithium metal use have very high environmental requirements.
Lithium batteries can roughly divide into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.
The well-known Tesla electric car is a battery panel composed of 18650 lithium-ion batteries in series and parallel. With the growing popularity of new energy vehicles, the power battery industry has also become hot!
Below we will learn to understand the manufacturing process of lithium batteries in the form of diagrams.
The following pictures and text will explain the 21 production processes of lithium batteries:
The first step: negative electrode homogenate
Step 2: Positive electrode homogenate
The third step coating
Fourth step rolling
Step 5 Slitting
Step 6 baking
Step 7 winding
The eighth step into the shell
Step 9 spot welding
Step 10 baking
Eleventh step injection
Step 12 welding cap
Step 13 cleaning
Step 14 Dry storage
Step 15 Check the alignment.
The sixteenth step shell coding
The assembled battery is given a certain current to excite the battery's positive and negative active materials. Finally, the electrochemical process that makes the battery have the discharge capacity called a chemical conversion. The battery can only be used as a power source after chemical conversion.
Step 18 OCV measurement
Nineteenth step storage at room temperature
Step 20: Divide
In the battery manufacturing process, the battery's actual capacity 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.
Step 21: final process
The above is the preparation process of lithium batteries. What do you think about this?
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