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Novel structure of round soft-shell battery

A soft shell and battery technology, which is applied to structural parts, lithium batteries, battery pack components, etc., can solve the problems of heavy shell and top cover, high internal pressure of the battery, and limited battery height, so as to reduce the overall weight, Improve safety performance and stabilize internal air pressure

Pending Publication Date: 2021-02-19
宁波科锂特电池配件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Novel structure of round soft-shell battery
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  • Novel structure of round soft-shell battery

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Embodiment example

[0031] see figure 1 , the present invention provides a technical solution: a new structure of a circular soft-shell battery, including a shell (100) and a top cover (200), and the shell (100) is stamped from a metal material with a thickness of about 30% of the shell material of a traditional cylindrical battery. The sealing part of the mouth is made of a material 3 to 4 times thicker than that of the shell. The sum of the weight of the casing (100) and the metal reinforcing ring (102) is about 50% lighter than that of the same traditional cylindrical battery, so that the strength of the sealing part is stronger.

[0032] In this implementation case, the top cover (200) is stamped and made of a metal material with a thickness about 30% of the shell material of a traditional cylindrical battery, and the sealing part of the mouth is made of a material with a thickness about 3 times that of the shell material. The sum of the weight of the top cover (200) and the metal support ri...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/107H01M50/119H01M50/152H01M50/186H01M10/052
CPCH01M10/052Y02E60/10
Inventor 王君褚振旗
Owner 宁波科锂特电池配件有限公司
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