Novel aluminum plastic film button battery

Abstract

The invention discloses a novel aluminum plastic film button battery, which comprises an aluminum plastic film shell and a cell, wherein the aluminum plastic film shell has a shell structure with hollow upper and lower parts, and the upper and lower aluminum plastic film shells are folded to form a cell cavity; the fitting edges of the two layers of aluminum plastic films of the aluminum plastic film shell are packaged by hot melting; the outer ring of an aluminum plastic film packaging area is provided with a sawtooth structure; when the outer ring of the aluminum plastic film is folded upwardly, the outer ring of the aluminum plastic film can be tightly attached to the surface of the upper aluminum plastic film; the cell is formed by an anode piece, a diaphragm and a cathode piece by laminating or winding, and the uncoated area at the tail end of the piece is connected with a lead; the lead is led out along the gap of fitting of the upper layer and the lower layer of the aluminum plastic film shell, and lead adhesives are attached to the upper surface and the lower surface of the lead. In a condition with the same button battery storage space, the thickness of the circular side of the button battery is reduced, and more utilization space is provided for the cell; and at least one face of the cell has a convex or concave shape to adapt to the structure space of different electronic application products, and the capacity of the battery is improved as much as possible.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a novel aluminum-plastic film button battery. Background technique [0002] A button battery is a type of battery with a small body, which has a large diameter, a small thickness, and looks like a button. Button batteries are generally used in various small electronic products, such as electronic watches, electronic hearing aids, earphones, etc. Button batteries can be divided into metal shells and soft pack shells according to the shell materials. Among them, the soft package shell is generally packaged by hot melting, and the packaged soft package material needs to be folded and attached to the circular surface of the shell. The common soft package material in the packaging area is round and cannot be completely attached to the round surface after being folded. The folded surface will have wrinkles, which makes the actual button battery volume larger and the energy density ...

AI Technical Summary

Problems solved by technology

The common soft package material in the packaging area is round and cannot be completely attached to the round surface after being folded. The folded surface will have wrinkles, which makes the actual button battery volume larger and the energy density of the battery smaller.

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