Grinding wheel guide, production line, and manufacturing method involved in manufacturing central core of secondary battery

A technology for secondary batteries and guides, which is applied in secondary battery manufacturing, manufacturing tools, and final product manufacturing, and can solve problems such as protrusions and breakage of separators

Active Publication Date: 2019-03-15
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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  • Grinding wheel guide, production line, and manufacturing method involved in manufacturing central core of secondary battery
  • Grinding wheel guide, production line, and manufacturing method involved in manufacturing central core of secondary battery
  • Grinding wheel guide, production line, and manufacturing method involved in manufacturing central core of secondary battery

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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 one embodiment of the present invention is shown, Figure 9 The noodle beveling device 200 in the production line 1 is shown (the overall view of the production line 1 is not shown). Line 1 is used to manufacture Figure 11 A tubular central core C as shown.

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

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

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PUM

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Abstract

An object of the present invention is to suppress generation of burrs or damages at both ends of a tubular center core for a secondary battery. The grinding wheel guide (20) of the present invention is used to guide a cutting grinding wheel (10) for cutting a tube when manufacturing a tubular central core for a secondary battery, and the grinding wheel guide (20) includes: a tube bundle support ( 22, 23, 24), which hold the tube bundle in a state where one or more bundles of material tubes are arranged; Guide, the guide member (22, 23) has a pair of guide surfaces (30) that abut against the side surfaces of the cut-off grinding wheel (10), and the guide surfaces (30) are formed of sintered diamond or cemented carbide. Preferably, the tube bundle support (22, 23, 24) has a holding frame (27) for a plurality of tube bundles to be fixed side by side on the inside, and the guide surface (30) is arranged so as to surround the holding frame (27) toward the cutting wheel (10). U-shaped with the opposite side open.

Description

technical field [0001] The present invention relates to a central core of a lithium-ion secondary battery, and more particularly to an apparatus and a method for manufacturing a tubular central core having no slits on its sides. Background technique [0002] In the past, a hollow cylindrical central core was inserted through the central hole of the wound electrode body of the lithium-ion secondary battery to prevent the wound electrode body from being deformed toward the central hole due to repeated charging and discharging. An exhaust passage for sending gas generated at the bottom of the battery to the upper side having the exhaust holes is formed. [0003] There is a possibility that such a central core may be dislocated due to shocks and vibrations applied to the battery, resulting in the loss of the above-mentioned functions or damage to the insulating spacer (separator) of the wound electrode body. Therefore, various methods for preventing the above-mentioned problems ...

Claims

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Application Information

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Patent Type & Authority Patents(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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