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Preparation of diaphragm

From:CTECHI GROUP Limited     Release time:2019-04-12

Overview:The polypropylene diaphragm meeting the thickness and width requirements is dried and placed in an environment with a humidity of less than 2% for use. A composite diaphragm that can be closed at 130-160 ° C is usually used in Lithium Manganese Dioxide battery for digital cameras.

The polypropylene diaphragm meeting the thickness and width requirements is dried and placed in an environment with a humidity of less than 2% for use. A composite diaphragm that can be closed at 130-160 ° C is usually used in Lithium Manganese Dioxide battery for digital cameras.

Fourth, the preparation of the battery core

In a humidity of less than 2%, two layers of a membrane slightly wider than the electrode are coated on both sides of the manganese dioxide positive electrode to separate the positive electrode from the lithium negative electrode, and then wound into a core body on a winder and then released. Inside the battery case. The winding structure of the lithium manganese dioxide battery core is shown in Figure 6-9.

Fifth, the preparation of electrolyte solution

The electrolyte solution formula is different from each manufacturer. The basic preparation method is to prepare the mixture of lithium perchlorate after water removal and purified propylene carbonate and ethylene glycol dimethyl ether. The preparation of the electrolyte solution is required to be carried out in a dry air environment a humidity of less than 2%.

Filling of electrolyte solution and sealing of liquid injection port

The upper cover with the glass insulator is first welded to the housing in which the electrode core is mounted, and then a predetermined weight of the electrolyte solution is injected into the battery from the injection hole by a liquid filling machine, and the steel ball is used for plugging and welding. If you want to learn more about 3.6V 2000mah Li-SOCl2 battery,you can contact us.


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