Negative Electrode Sheet and Lithium Ion Battery Patent Application

ChangeBridge: Patent Apps - Batteries (H01M)

Detected March 27th, 2026

Summary

The USPTO has published a patent application (US20260088389A1) detailing a novel negative electrode sheet and lithium ion battery design. The application focuses on a heat transport structure within the electrode sheet to improve thermal management.

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What changed

This document is a published patent application from the USPTO for a negative electrode sheet and lithium ion battery. The invention features a heat transport structure integrated into the active material layer of the negative electrode sheet, comprising a heat transport layer and heat transport columns, designed to enhance heat dissipation. This is a disclosure of new technology, not a regulatory mandate.

As this is a patent application, there are no immediate compliance obligations for regulated entities. However, companies involved in battery manufacturing or energy storage may wish to review this application for potential intellectual property insights or future technological developments in the field. The application was filed on November 9, 2023, and published as US20260088389A1.

Source document (simplified)

← USPTO Patent Applications

NEGATIVE ELECTRODE SHEET AND LITHIUM ION BATTERY

Application US20260088389A1 Kind: A1 Mar 26, 2026

Inventors

Xia Wu, Zhihao Yu, Wenwen Li

Abstract

This application discloses a negative electrode sheet and a lithium ion battery. In the negative electrode sheet, an active material layer is attached to an inner surface of a negative electrode current collection layer, and a heat transport structure extending from the surface to the interior is configured in the active material layer. The heat transport structure includes a heat transport layer and a heat transport column. The heat transport layer is attached between the active material layer and the lithium replenishment layer. Heat transport holes are opened in the active material layer by laser. Multiple heat transport columns attached to an inner surface of the heat transport layer are inserted into corresponding heat transport holes.