Manufacturing process of lithium manganese battery

Hongli lithium battery manufacturer is taking fully sealed cylindrical coil lithium manganese dioxide battery as an example to illustrate the basic manufacturing process of this kind of battery and its manufacturing process.

I. Preparation of manganese dioxide anode

The heat treated electrolytic manganese dioxide powder was mixed with acetylene black, polytetrafluoroethylene emulsion and isopropyl alcohol in a certain proportion and stirred into paste, and then the paste was evenly coated on the metal collector net for heat treatment and rolled into electrodes; Another method is to heat the prepared positive electrode paste and place it on both sides of the metal collecting fluid by rolling the opposite roller to make the electrode. The prepared electrode should be placed in the air humidity less than 2010 environment.

Ii. Preparation of lithium metal anode

Select the corresponding thickness and width of lithium belt according to different battery models, and cut it into the required length, and then cold weld the pole ear on the cut lithium belt. Negative electrode preparation must be carried out in an environment with relative humidity less than 2%.

Third, preparation of diaphragm

The polypropylene diaphragm that meets the thickness and width requirements is dried and placed in an environment with humidity less than 2% for reserve. Usually choose in 130 ~160℃ can be closed composite diaphragm.

Iv. Preparation of battery core

In an environment with humidity less than 2%, two layers of diaphragm slightly wider than the electrode are wrapped on both sides of the manganese dioxide positive electrode to separate the positive electrode and the lithium negative electrode, and then it is wound into a core on the winding machine and placed in the battery case. Coiling structure of lithium manganese dioxide battery core.

5. Preparation of electrolyte solution

Electrolyte solution formula manufacturers vary, the basic preparation method is proportional to the removal of water after lithium perchlorate and purified propylene carbonate, ethylene glycol dimethyl ether and other mixed preparation. The preparation of the electrolyte solution requires a dry air environment with less than 2% humidity.

Vi. Filling of electrolyte solution and sealing welding of liquid filling port

The top cover with a glass insulator is first welded with the shell with the electrode core installed, and then the specified weight of electrolyte solution is injected into the battery through the injection hole with a liquid injector, and the hole plugging welding is carried out with a steel ball.

The above is the introduction of lithium manganese battery manufacturing process. For more lithium manganese cylindrical batteries, please contact Jiangmen Hongli lithium battery manufacturer.

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