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Cylindrical lithium battery

A lithium battery and cylindrical technology, applied in the field of cylindrical lithium batteries, can solve the problems of battery short circuit, poor sealing, low voltage, etc., and achieve the effect of improving work efficiency and avoiding damage

Inactive Publication Date: 2009-11-18
徐敖奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very easy to damage the nickel-plated layer at the mouth of the steel shell. Once the nickel-plated layer is damaged, the steel shell is easy to rust
[0005] 2. When the battery core runs at the same speed on a high-speed machine, a large resonance is generated, and the paint layer on the pole piece and the welding at the bottom will be damaged to varying degrees, such as the paint layer on the pole piece. In the case of resonance If a small part falls off, it may cause a micro-short circuit to the battery, resulting in low voltage
Serious consequences such as large head diameter and poor sealing may occur during sealing

Method used

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  • Cylindrical lithium battery
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  • Cylindrical lithium battery

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] figure 1 Shown is a cylindrical lithium battery of the present invention, including an explosion-proof combination cap 1 with a nut and a housing 3, such as figure 2 As shown, there is a step 31 at the mouth of the housing 3 , and an annular metal sealing ring 2 is embedded between the explosion-proof combination cap 1 with a nut and the housing 3 . The thinner part of the step 31 is 0.1 mm thinner than the thicker part. Such as image 3 As shown, there is a step 21 opposite to the step 31 on the outer peripheral surface of the metal sealing ring 2 .

[0018] During processing, the metal sealing ring 2 relies on the thickness boundary of the step 31 as a base pad, and is tightly embedded in the step 31 of the mouth of the shell 3, and the explosion-proof combination cap 1 with nuts is embedded in the metal sealing ring 2 and directly adopts hydraulic sealing The machine performs the sealing operation, and finally completes the sealing of the cylindrical lithium batt...

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PUM

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Abstract

The invention discloses a cylindrical lithium battery, comprising a nut cap with a nut explosion combination, a metal gasket ring and a shell; wherein the opening of the shell is provided with a step. As the technical proposal is adopted, after the nut cap with the nut explosion combination, the metal gasket ring and the shell are combined, sealing operation can be carried out directly by adopting a hydraulic sealing machine, thereby not only improving the working efficiency, but also effectively avoiding damage of roll groove sealing process on battery performance in processing.

Description

technical field [0001] The invention relates to a cylindrical lithium battery. Background technique [0002] Cylindrical lithium batteries include cells, caps, and casings. The casings with the cells installed are generally sealed by roller groove sealing. [0003] The traditional cylindrical lithium battery roller groove sealing process has the following disadvantages: [0004] 1. The steel shell with the battery core is running on the high-speed roller groove machine. Due to the principle of inertia, the mouth of the steel shell and the mold head produce large friction. It is very easy to damage the nickel-plated layer at the mouth of the steel shell. Once the nickel-plated layer is damaged, the steel shell is prone to rust. [0005] 2. When the battery core runs at the same speed on a high-speed machine, a large resonance is generated, and the paint layer on the pole piece and the welding at the bottom will be damaged to varying degrees, such as the paint layer on the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/14H01M10/36H01M2/02H01M2/08H01M2/04H01M2/12H01M50/107H01M50/143H01M50/147H01M50/188
CPCY02E60/12Y02E60/10
Inventor 徐敖奎许刚
Owner 徐敖奎