Lithium battery electrolyte filling process analyze

2019-09-18

The electrolyte function of the lithium battery is to conduct ions between the positive and negative electrodes, and acts as a medium for charging and discharging, just like the blood of the human body.


electrolyte filling


Lithium battery injection can be divided into two steps:filling and infiltration.Infiltration is a more critical and difficult step.During this step,electrolyte is diffuse at electrode.There are three force interactions in this process:the pressure Fi from the electrolyte flow, the capillary force due to the surface tension Fs, and the resistance Fg generated by the air in the hole.So,Vacuum-pressure filling is beneficial to electrolyte infiltration.When filling the electrolyte, vacuuming the battery can reduce the resistance generated by the air, while pressurizing the electrolyte can increase the driving force of the liquid flow. 

electrolyte filling machine

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