LG Energy Solution Patent Granted for Unit Cell Manufacturing

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 24th, 2026

Detected March 26th, 2026

Summary

The USPTO has granted LG Energy Solution, Ltd. a patent (US12586808B2) for an apparatus and method for manufacturing unit cells for batteries. The patent details specific components and processes involved in assembling battery unit cells, including the handling of electrodes and separators.

View original document View source feed page

What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12586808B2 to LG Energy Solution, Ltd. This patent covers a specific apparatus and method for manufacturing unit cells, which are fundamental components of batteries. The invention details the precise arrangement and function of reels, rollers, conveyors, headers, and cutters used in the assembly process, including the sequential layering of separator sheets and electrodes.

This patent grant is primarily an intellectual property event and does not impose new regulatory obligations on other entities. However, it signifies an advancement in battery manufacturing technology by LG Energy Solution. Companies operating in the battery manufacturing sector, particularly those involved in similar unit cell assembly processes, may wish to review the patent's claims to understand the scope of LG Energy Solution's intellectual property rights and to ensure their own processes do not infringe upon this patent.

Source document (simplified)

← USPTO Patent Grants

Apparatus and method for manufacturing unit cells

Grant US12586808B2 Kind: B2 Mar 24, 2026

Assignee

LG Energy Solution, Ltd.

Inventors

Se Hyun Yoon, Dong Hyeuk Park, Chun Ho Kwon

Abstract

An apparatus for manufacturing unit cells includes reels, rollers, conveyors, headers, and a cutter. A lower separator sheet is unwound from a lower separator reel. A feeding roller moves the lower separator sheet in a first direction. A conveyor moves a first electrode in a second direction parallel to the first direction. A first header conveys that electrode from the conveyor and onto the lower separator sheet. An upper separator sheet is unwound from an upper separator reel. Another feeding roller moves, in the first direction, a first ordered stack of the lower separator sheet, first electrode, and upper separator sheet. Another conveyor moves a second electrode in the second direction. Another header conveys that electrode from the second conveyor and onto the upper separator sheet. The cutter cuts, at preset intervals, a second ordered stack of the lower separator sheet, first electrode, upper separator sheet, and second electrode.