Apparatus and Method for Manufacturing Secondary Battery

Patent metadata

Field	Value
Publication number	US-2022029192-A1
Application number	US-202017311577-A
Country	US
Kind code	A1
Filing date	Mar 31, 2020
Priority date	Apr 16, 2019
Publication date	Jan 27, 2022
Grant date	—

Abstract

An apparatus for manufacturing a secondary battery includes a first guide in which one side of one end is recessed to define a concave space, wherein, when a battery case of the secondary battery is folded, the one end is configured to be inserted into the battery case to push a folding part of the battery case to an outside; and a second guide configured to hold a sealing part of the battery case so as to fix the battery case.

First claim

1 - 12 . (canceled)

13 . An apparatus for manufacturing a secondary battery, the apparatus comprising:
a first guide in which one side of one end is recessed to define a concave space, wherein, when a battery case of the secondary battery is folded, the one end is configured to be inserted into the battery case to push a folding part of the battery case to an outside; and a second guide configured to hold a sealing part of the battery case so as to fix the battery case.

14 . The apparatus of claim 13 , wherein the first guide is inserted into the battery case through the sealing part.

15 . The apparatus of claim 13 , wherein, when the first guide pushes the folding part to the outside, a portion of the folding part is inserted into the concave space.

16 . The apparatus of claim 13 , wherein, in the first guide, the one side of the one end is recessed inward to be filleted.

17 . The apparatus of claim 13 , wherein, in the first guide, the one side of the one end is recessed inward and filleted to define the concave space with a plurality of planes, and an exterior angle defined by the plurality of planes is provided as an obtuse angle.

18 . The apparatus of claim 13 , further comprising a sealing tool configured to apply heat and a pressure to the sealing part to seal the sealing part.

19 . The apparatus of claim 18 , wherein, before the sealing part is sealed, the first guide is pulled out from the battery case.

20 . The apparatus of claim 13 , wherein the first guide has a thickness greater than a width of an accommodation part of the battery case when the folding part is unfolded and less than a thickness of the battery case when the battery case is folded.

21 . The apparatus of claim 13 , wherein the second guide has a forceps shape so that it is configured to hold the sealing part from opposing surfaces.

22 . The apparatus of claim 21 , wherein the first guide has a bar shape.

23 . A method for manufacturing a secondary battery, the method comprising:
accommodating an electrode assembly, in which electrodes and separators are alternately stacked, in a battery case; inserting one end of a first guide, in which one side of the one end is recessed to form a concave space, into the battery case when the battery case is folded; pushing a folding part of the battery case to an outside with the first guide; fixing the battery case by holding a sealing part of the battery case with a second guide; and sealing the sealing part by applying heat and a pressure to the sealing part with a sealing tool.

24 . The method of claim 23 , further comprising, after the step of fixing the battery case and before the step of sealing the sealing part, a step of pulling out the first guide from the battery case.

25 . The method of claim 23 , wherein the step of inserting the one end of the first guide includes inserting the first guide into the battery case through the sealing part.

26 . The method of claim 23 , the step of pushing the folding part to the outside includes allowing a portion of the folding part to be inserted into the concave space of the first guide.

27 . The method of claim 23 , wherein the first guide has a thickness greater than a width of an accommodation part of the battery case when the folding part is unfolded and less than a thickness of the battery case when the battery case is folded.

28 . The method of claim 23 , wherein the step of fixing the battery case includes holding the sealing part from opposing surfaces with the second guide having a forceps shape.

Assignees

• Lg Energy Solution Ltd

Inventors

• Lee Sang Kyun
• Park Min Soo
• Kim Young Ha
• Hong Young Hoon
• Kim Seong Hyun
• Hong Eui Jin

Classifications

• H01M50/103

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title

• H01M50/102

  characterised by their shape or physical structure · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/049 Primary

  Processes for forming or storing electrodes in the battery container · CPC title