Electrode manufacturing method, electrode current collector, and electrode

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 31st, 2026

Detected March 31st, 2026

Summary

The USPTO granted Patent US12592391B2 to Toyota Jidosha Kabushiki Kaisha covering electrode manufacturing methods and electrode current collector designs for battery technology. The patent describes forming active material layers on metal foil with adhesive layers and groove portions, with specific configurations for peeling portions of the active material layer.

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What changed

The USPTO granted Patent US12592391B2 to Toyota Jidosha Kabushiki Kaisha on March 31, 2026. The patent covers electrode manufacturing methods involving forming active material layers on electrode current collectors with metal foil having adhesive layers in specific regions, creating groove portions, and peeling off portions of the active material layer. The patent includes 5 claims and CPC classification H01M 4/667 related to battery technology.

This patent grant provides Toyota with intellectual property protection for its electrode manufacturing innovations in the US market. Companies developing similar battery electrode manufacturing processes should review the patent claims to assess potential licensing needs or design-around considerations. No compliance actions or deadlines are required.

Source document (simplified)

← USPTO Patent Grants

Electrode manufacturing method, electrode current collector, and electrode

Grant US12592391B2 Kind: B2 Mar 31, 2026

Assignee

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventors

Yusuke Kintsu, Tetsuya Mimura, Haruka Shionoya, Yasuhiro Sakashita, Takeshi Kondo, Tomoyuki Tasaki, Yuta Kawamoto

Abstract

An electrode is manufactured by forming an active material layer on a surface of an electrode current collector, forming a groove portion on a surface of the active material layer, and peeling off a part of the active material layer. An electrode current collector includes a metal foil and an adhesive layer. The metal foil includes a first region and a second region. The adhesive layer covers the first region. In the second region, the metal foil is exposed. The active material layer includes a first portion that covers the adhesive layer and a second portion that covers the second region. The groove portion is formed in each of the first portion and the second portion. The second portion is peeled off.