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Battery cylindrical shell and cylindrical anti-explosion battery and its processing method and device

A technology for battery shells and processing equipment, applied in secondary batteries, battery pack parts, non-aqueous electrolyte batteries, etc., which can solve problems such as damage to the coating on the surface of the shell, doubts about the effect of sealing technology, and large fluctuations in sealing pressure. The fluctuation of sealing pressure is reduced, it is easy to popularize and implement, and the effect of simple implementation

Inactive Publication Date: 2007-06-27
HYB BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional cylindrical lithium-ion battery mainly shows the following disadvantages in these links: the coating on the surface of the shell is damaged when the groove is rolled, and the sealing pressure fluctuates greatly
However, based on experience, the effectiveness of this sealing technique is questionable

Method used

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  • Battery cylindrical shell and cylindrical anti-explosion battery and its processing method and device
  • Battery cylindrical shell and cylindrical anti-explosion battery and its processing method and device
  • Battery cylindrical shell and cylindrical anti-explosion battery and its processing method and device

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Experimental program
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Effect test

Embodiment 1

[0039] Processing equipment embodiment 1 and processing method:

[0040] Figures 5 and 6 are schematic diagrams of processing the convex ring of the casing by using Embodiment 1 of the processing equipment of the present invention. Embodiment 1 of the processing equipment includes a mandrel 11 and a rear ejector rod 12 for pressing and positioning the battery casing 9 from both ends in the axial direction, and the processing equipment also includes a hook die 13, which includes a probe The hook head 131 inserted into the rolling groove is formed with a smooth convex body 132 in a hook shape on the end side of the hook head 131 . The processing method includes the following steps: A) forming a circle of rolling grooves 90 by rolling on the shoulder of the battery case 9, and at the same time, applying an axial extrusion thrust in the axial direction of the battery case 9; B) after the rolling grooves 90 are formed, using The convex body 132 of the hook die 13 forms a circle of...

Embodiment 2

[0042] Processing equipment embodiment 2 and processing method:

[0043] Figures 7 and 8 are schematic diagrams of processing the convex ring of the shell by using the equipment embodiment 2 of the present invention. The processing equipment embodiment 2 includes a lower die 14, and the processing equipment also includes a stamping upper die 15. The lower end of the stamping upper die 15 includes a stepped surface 150, and a small head downwards is formed below the stepped surface 150. Tapered die head 151, the outer diameter of the small head of the tapered die head 151 is equivalent to the inner diameter of the battery case 9; the inner diameter of the opening 140 of the lower die 14 is equivalent to the outer diameter of the battery case 9, and the lower The clamping mold 14 has a depth-adjusting mechanism (not shown in detail) for adjusting the depth of the hole, and the depth-adjusting mechanism can make the outer bottom surface of the upper edge of the rolling groove 90 ...

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Abstract

This invention relates to a cell cylinder shell and a cylinder explosion-proof cell, its processing method and a device, in which, the shell includes a cylindrical side and a bottom molded at one run, a circle of concave cannelure is formed on the shoulder of the side and an upward convex ring on the upper edge of it. Advantage: the molding of the shell is more reasonable, the stress of the shell and airtight packing is improved and sealing of the seal is increased.

Description

technical field [0001] The invention relates to a chemical power source, more specifically, the invention relates to a mechanically sealed cylindrical battery and its manufacturing technology. Background technique [0002] With the rapid development of digital products such as digital cameras, video cameras, notebook computers, and mobile DVDs, lithium-ion batteries with high specific capacity, high energy density, and long life, especially cylindrical lithium-ion batteries, are widely used. [0003] At present, the usual cylindrical lithium-ion battery includes a steel case, and from top to bottom includes a cap, a temperature safety ring, a safety valve, a current disconnect device, a breathable plate, a positive ear, an upper gasket, a winding core, and an explosion-proof The shoulder of the battery casing forms a circle of concave rolling grooves, and a sealing ring is embedded between the upper edge of the rolling groove and the closing of the upper end of the casing. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/12H01M10/40H01M10/0525H01M10/058H01M50/107H01M50/186H01M50/193
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 江强冯岸柏石龙
Owner HYB BATTERY
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