Bag-making type lithium ion battery and preparation method thereof
A lithium-ion battery and bag-type technology, which is applied in the manufacture of electrolyte batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve problems such as low production efficiency and poor control, and achieve improved performance, reduced self-discharge, and improved The effect of sealing and safety performance
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[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention will be described in further detail below:
[0029] A bag-making lithium-ion battery is composed of aluminum-plastic packaging film, positive electrode tabs, negative electrode tabs, pole pieces, and bag-making pole pieces. The pole pieces and the upper and lower diaphragms are heat-sealed into one containing pole piece. Then, the bag pole piece and the counter electrode are layered together to form a pole group, and then the positive electrode tab and the negative electrode tab are welded together with the positive electrode tab and the negative electrode tab of the electrode group, and the aluminum-plastic packaging film is used Package after packaging.
[0030] In the technical scheme of the present invention, the diaphragm, positive electrode, diaphragm, and negative electrode laminates are assembled. The battery core is a laminated design. The nega...
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