USPTO Patent Application: Die Assembly for Secondary Battery Electrode Plate

ChangeBridge: Patent Apps - Batteries (H01M)

Published March 26th, 2026

Detected March 26th, 2026

Summary

The USPTO has published a patent application detailing a die assembly for notching secondary battery electrode plates and its manufacturing method. The application, filed by inventors Sungjin KWON and Seonghyun JO, focuses on a specific method for creating the punch and die holders to ensure precise cutting of battery components.

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What changed

This document is a USPTO patent application (US20260084334A1) for a die assembly designed for notching electrode plates of secondary batteries. The application, filed on September 11, 2025, by inventors Sungjin KWON and Seonghyun JO, describes a manufacturing method that involves overlapping and polishing punch and die holders, setting center points, and creating reference holes to ensure precise alignment and cutting of battery components.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on manufacturers. However, it represents a new development in battery manufacturing technology. Companies involved in secondary battery production, particularly those focused on electrode plate manufacturing or die assembly, may wish to review this application for potential intellectual property considerations or technological advancements relevant to their operations.

Source document (simplified)

← USPTO Patent Applications

DIE ASSEMBLY FOR NOTCHING ELECTRODE PLATE OF SECONDARY BATTERY AND METHOD OF MANUFACTURING DIE ASSEMBLY

Application US20260084334A1 Kind: A1 Mar 26, 2026

Inventors

Sungjin KWON, Seonghyun JO

Abstract

The present disclosure relates to a die assembly used for notching or cutting an electrode plate of a secondary battery and a method of manufacturing the die assembly. The present disclosure provides a method of manufacturing a punch holder and a die holder of a die assembly for notching an electrode plate of a secondary battery, which includes fixedly overlapping a punch holder and a die holder, simultaneously polishing side surfaces of the punch holder and the die holder overlapping each other, setting a center point of each of the punch holder and the die holder overlapping each other, and generating a reference hole passing through each of the punch holder and the die holder overlapping each other at a position spaced from the center point, and a notching die assembly manufactured by the method.