| abstract |
An ultra-thin lithium battery, comprising a battery core and a packaging film, the packaging film includes a positive packaging film with a positive electrode lug and a negative electrode packaging film with a negative electrode lug, and the lithium battery packaging film is composed of an outer protective layer and a negative electrode packaging film. The inner metal layer is composited, and at least the inner surface of the metal layer is provided with a chemically treated anti-corrosion layer. The invention adopts a brand-new packaging film structure, one is that there is no inner film layer; the other is that the inner surface of the metal is used as the current collector of the lithium battery and directly used as the tab, which saves the traditional tab and the current collector. The welding process greatly reduces the thickness of the lithium battery. The ultra-thin manufacturing process, low cost, and high battery energy density are realized. The battery has a certain flexibility and can be bent, which is more convenient for later use in the structural design of electronic products, and can greatly expand the application field and scope of lithium batteries. |