Novel structure of round soft-shell battery

Abstract

The invention discloses a novel structure of a round soft-shell battery, and the structure comprises a shell made of thinner metal material; a metal reinforcing ring is additionally arranged on the outer side of the sealing part of the shell, the metal reinforcing ring is tightly matched with the shell to form a thick and thin double-layer reinforcing structure, and the novel structure comprises atop cover made of thinner metal material; a metal supporting ring is additionally arranged on the inner side of the sealing part of the top cover; the metal supporting ring is tightly matched with the sealing part to form a thick and thin double-layer reinforcing structure; according to the designed novel structure of the round soft-shell battery, the sealing strength can be improved, the internal pressure can be stabilized, and the use safety can be improved.

Description

technical field [0001] The invention belongs to the technical field of energy storage lithium batteries, and in particular relates to a new structure of a circular soft shell battery. Especially suitable for small batteries on wearable devices. Background technique [0002] Compared with the cylindrical battery, the existing aluminum-plastic film pouch battery has the following disadvantages: [0003] 1. The quality requirements of the outsourcing material aluminum-plastic film are high; [0004] 2. It is difficult for soft-pack batteries to use the winding method to produce batteries, which is difficult for automated production and high in manufacturing costs; [0005] 3. The aluminum-plastic film of the soft pack battery cannot be stretched, and the height of the battery is limited and cannot achieve the ideal height; [0006] 4. The sealing part of the small pouch battery takes up a lot of space and has a small volume-to-energy ratio; [0007] Compared with the alumin...

AI Technical Summary

Problems solved by technology

[0003] 1. The quality requirements of the outsourcing material aluminum-plastic film are high;

[0004] 2. It is difficult for soft-pack batteries to use the winding method to produce batteries, which is difficult for automated production and high in manufacturing costs;

[0005] 3. The aluminum-plastic film of the soft pack battery cannot be stretched, and the height of the battery is limited and cannot achieve the ideal height;

[0008] 1. The weight of the shell and the top cover is heavy, resulting in a relatively low energy density of the battery;

[0009] 2. It is impossible to adopt the soft-pack battery production process of first sealing, then forming, then pumping and then sealing, which will easily cause high internal pressure of the battery and high sealing requirements;

[0010] 3. The shell has high strength, can withstand large internal pressure, and has a small explosion-proof safety factor

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