Plug attaching device, and secondary battery manufacturing method using the same

Patent metadata

Field	Value
Publication number	US-2022376370-A1
Application number	US-202217745878-A
Country	US
Kind code	A1
Filing date	May 17, 2022
Priority date	May 19, 2021
Publication date	Nov 24, 2022
Grant date	—

Abstract

A technology capable of sealing a target with higher airtightness is provided. The plug attaching device disclosed herein is for attaching, to a through hole of a target, a cylindrical plug having therein a non-through hole that has an opening in one end surface. The device includes an insertion pin, and a guide portion. The guide portion is slidable in the axial direction of the insertion pin. This device is configured such that the plug is disposed inside the through hole, the insertion pin is pushed into the non-through hole with the guide portion disposed on the periphery of the opening to attach the plug into the through hole, and after the attachment, the insertion pin is moved in an opposite direction to the non-through hole to remove the insertion pin from the non-through hole, and the guide portion is then detached from the opening.

First claim

What is claimed is

1 . A device for attaching into a through hole of a target a cylindrical plug having therein a non-through hole that has an opening on one end surface, the device comprising:
an insertion pin to be inserted into the non-through hole from the opening of the plug; and a guide portion for guiding a peripheral wall surface of the insertion pin, the guide portion being slidable in an axial direction of the insertion pin, wherein the device is configured such that: the plug is disposed inside the through hole, the insertion pin is pushed into the non-through hole with the guide portion disposed on a periphery of the opening, to attach the plug into the through hole, and after the attachment, the insertion pin is moved in an opposite direction to the non-through hole to remove the insertion pin from the non-through hole, and the guide portion is then detached from the opening.

2 . The device according to claim 1 , wherein
the insertion pin coaxially comprises a columnar large-diameter portion, and a columnar small-diameter portion having a diameter smaller than the large-diameter portion, the small-diameter portion protrudes from an end of the large-diameter portion in the axial direction, the large-diameter portion is slidable in the axial direction along an inner wall surface of the non-through hole, and the device is configured such that the plug is attached into the through hole with at least part of the large-diameter portion and the small-diameter portion inserted into the non-through hole, and an end of the small-diameter portion in the insertion direction in contact with at least part of a bottom surface of the non-through hole.

3 . The device according to claim 1 , wherein
the plug comprises a plug body to be fitted into the through hole of the target, and a restriction portion for restricting fitting of the plug into the through hole, the plug body and the restriction portion are continuous to each other, the opening of the non-through hole is formed in an outer surface on the restriction portion side in the direction in which the plug body and the restriction portion are continuous to each other, the non-through hole extends from the opening to the inside of the plug body through the restriction portion, and the bottom surface of the non-through hole is formed inside the plug body.

4 . A method for manufacturing a secondary battery comprising
an electrode assembly that comprises a positive electrode and a negative electrode, a nonaqueous electrolyte, and a battery case comprising a liquid injection hole for injecting the nonaqueous electrolyte, the battery case housing the electrode assembly and the nonaqueous electrolyte, the method comprising
temporary sealing the liquid injection hole of the battery case housing the electrode assembly and the nonaqueous electrolyte, wherein
the temporary sealing is performed by using the device according to claim 1 .

Assignees

• Prime Planet Energy & Solutions Inc

Inventors

• Fujishima Seigo

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/102

  characterised by their shape or physical structure · CPC title

• H01M50/645 Primary

  Plugs · CPC title

• H01M10/058

  Construction or manufacture · CPC title