OpenTechnical
This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12605757-B2, on 21 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000294

Manufacturing method of battery case

Published
Permanent URL
Classification
Manufacturing & Assembly Equipment › Machining Systems
Original source
US-12605757-B2, the United States Patent and Trademark Office, 21 April 2026
Document SHA-256
d312aed51aadf300f8a017e9a4a9993d6d0d77dd356ed49eafc5d84b699bab6a

Abstract

A manufacturing method of a battery case having a rectangular transverse cross-section in which an intermediate product having an elliptical transverse cross-section is shaped into a final product having a rectangular transverse cross-section by drawing and ironing the intermediate product multiple times to reduce a curvature radius of each corner and thicknesses of side walls formed on both sides of the corner. A difference between an ironing rate of the side wall formed on one side of the corner and an ironing rate of the side wall formed on the other side of the corner is reduced less than a predetermined difference, after the curvature radius of the corner between the side walls has been reduced shorter than a predetermined radius during the process of shaping the intermediate product into the final product.

Publication information

Plain textMarkdownManifestIntegrity record

Citation

OpenTechnical Publication OT-2026-000000294, “Manufacturing method of battery case,” published September 15, 2026 at 19:02:42 UTC, https://opentechnical.org/p/OT-2026-000000294.

To cite specific content, add the paragraph or figure numbers.

Terms

This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.