US 2021/0344085 A1Published application

Electrode assembly and inspection method therefor

AssigneeLG Chem, Ltd.

InventorsKwan Hong BAE, Chan Woo PARK

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Abstract

The present invention relates to an electrode assembly and an inspection method therefor, whereby tab folding and alignment of an electrode may be accurately checked. The electrode assembly, according to one embodiment, has a structure in which at least one unit cell is laminated, the unit cell having a structure of a first electrode/a separator/a second electrode/a separator/a third electrode, wherein the first electrode and the third electrode may each comprise a tab protruding toward the outer periphery of one side, and the second electrode may comprise a tab protruding toward the outer periphery of the other side facing the one side.

Claims16

Dependent claims

An electrode assembly having a structure in which at least one unit cell comprising a first electrode, a separator, a second electrode, separator, and a third electrode structure, stacked in order as listed,

wherein each of the first electrode and the third electrode includes a tab protruding toward an outer periphery of one side, and the second electrode includes a tab protruding toward an outer periphery of the other side facing the one side,
wherein each of the first electrode tab and the third electrode tab includes a through hole formed in an edge of one side, and an inclined portion forming a predetermined angle with respect to an virtual extension line extending from both outer peripheries adjacent to each other among outer peripheries of the tab in an edge of the other side, and
wherein the through hole of the first electrode tab and the inclined portion of the third electrode tab are arranged to overlap with each other.

Dependencies are inferred from the claim text.

Facts

Application: 17/283,246Filed 4 May 2020
Priority: KR 10-2019-005630514 May 2019
Published: 4 Nov 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01M 10/0413
Construction or manufacture in general: large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
H01M 50/533
Electrode connections inside a battery casing: characterised by the shape of the leads or tabs
G01N 21/8803
Investigating the presence of flaws or contamination: visual inspection
G01N 21/95
Investigating the presence of flaws or contamination: characterised by the material or shape of the object to be examined

Family

US 12,176,579 B2Related patent
US 2021/0344085 A1This patent

From the US filing history. Foreign family members aren’t listed.

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