Cut out the small ears of the positive and negative terminals on the battery - the pole ear die cutting and slicing
The die - cutting process is to use the die - cutting machine to form the conductive pole ear. We know that the battery is divided into positive and negative poles, and the pole ear is the metal conductive body that leads from the positive and negative poles of the battery. Generally speaking, the ears of the positive and negative poles of the battery are the contact points when charging and discharging.
And the next slitting process is to cut the battery pole piece through the cutter.
Complete the prototype of the cell - winding process
Here, the positive electrode, negative electrode and isolation film of the battery are combined in a winding way to form a bare cell. Advanced CCD visual inspection equipment can realize automatic detection and automatic correction, to ensure that the core pole film is in good position.
With the aid of CCD visual inspection equipment, the battery production workshop of CATL Ningde era is one of the most automated battery production workshops in the world.
Remove moisture and inject electrolyte - baking and injection
Water is the enemy of the battery system, the battery baking process is to make the battery internal moisture standard, to ensure that the battery has a good performance in the whole life cycle.
And liquid injection, is to inject electrolyte into the cell. The electrolyte is like the blood flowing in the body of the cell, and the exchange of energy is the exchange of charged ions. These charged ions are transported from the electrolyte to another electrode, where they are charged and discharged. The amount of electrolyte injection is the key of the key. If the amount of electrolyte injection is too large, it will lead to the battery heating and even direct failure. If the amount of injection is too small, it will affect the circulation of the battery.
