Grindstone guide, production line and production method pertaining to rechargeable battery core production

A secondary battery and guide technology, applied in secondary battery manufacturing, manufacturing tools, final product manufacturing, etc., can solve problems such as breakage and protrusion of separators

Active Publication Date: 2018-08-31
KOTOBUKI PRECISION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the central core with a C-shaped cross section as in Patent Document 1 to Patent Document 4, if the battery is deformed by a large external pressure, the edge of the slit may protrude and damage the separator.

Method used

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  • Grindstone guide, production line and production method pertaining to rechargeable battery core production
  • Grindstone guide, production line and production method pertaining to rechargeable battery core production
  • Grindstone guide, production line and production method pertaining to rechargeable battery core production

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Embodiment Construction

[0037] Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. However, the present invention is not limited to the following embodiments.

[0038] figure 1 The cutting device 100 of the production line 1 of the central core body C of the lithium ion secondary battery according to an embodiment of the present invention is shown, Picture 9 The surface cutting device 200 in the production line 1 is shown (the overall view of the production line 1 is not shown). Production line 1 is used for manufacturing Picture 11 A tubular central core C as shown.

[0039] In addition, in figure 1 , image 3 , Picture 9 Here, the symbols 100(1) and 200(1) indicate that both the cutting device 100 and the noodle cutting device 200 are included in the production line 1.

[0040] Such as figure 2 As shown, the cutting device 100 is used to cut a raw material pipe P to form a work pipe (not shown) A of a predetermined length, and a plura...

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PUM

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Abstract

The present invention limits the occurrence of burrs and scratches on the two ends of a pipe-type core for a rechargeable battery. This grindstone guide (20) is for guiding a cutting grindstone (10) for cutting pipes when manufacturing pipe-type cores for rechargeable batteries and is provided with: pipe bundle supports (22, 23, 24) for holding one or multiple pipe bundles, in which material pipeshave been bundled, side by side; and guiding members (22, 23) for guiding the cutting grindstone (10). The guiding members (22, 23) have a pair of guiding surfaces (30) that contact the side surfacesof the cutting grindstone (10) and the guiding surfaces (30) are formed with sintered diamond or cemented carbide. The pipe bundle supports (22, 23, 24) have a holding frame (27) for juxtaposing themultiple pipe bundles in parallel therein and immobilizing same. The guiding surfaces (30) are preferably disposed in a U-shape so as to surround the holding frame (27) and opens towards the side opposite to the cutting grindstone (10).

Description

Technical field [0001] The present invention relates to a central core of a lithium ion secondary battery, and in particular to a device and method used when manufacturing a tubular central core without slits on the side. Background technique [0002] In the past, a hollow cylindrical center core was inserted into the center hole of the wound electrode body of a lithium ion secondary battery to prevent the wound electrode body from deforming toward the center hole due to repeated charging and discharging. In addition, it is also convenient An exhaust passage for conveying the gas generated at the bottom of the battery to the upper side with exhaust holes is formed. [0003] Such a central core body may be misaligned due to impact and vibration applied to the battery, which may result in damage to the above-mentioned function or damage to the insulating separator of the wound electrode body. Therefore, various methods have been proposed to prevent these problems. Program. [0004] F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B27/06B23D45/12H01M10/04
CPCB23D45/12B24B27/06H01M10/04Y02P70/50
Inventor 米仓胜治小林淳次久保修后藤贵博道上弘基
Owner KOTOBUKI PRECISION CO LTD
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