USPTO Grants Patent for AESC Japan Battery Cooling Module

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 24th, 2026

Detected March 26th, 2026

Summary

The United States Patent and Trademark Office (USPTO) has granted US Patent No. 12586839 B2 to AESC Japan Ltd. for a battery module designed with improved cooling performance. The patent details a specific configuration of battery cells, spacers, and heat transfer plates aimed at enhancing thermal management within battery devices.

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What changed

The USPTO has officially granted US Patent No. 12586839 B2 to AESC Japan Ltd. This patent covers a novel battery module design that incorporates improved cooling mechanisms. The invention features a specific arrangement of battery cells, spacers, and heat transfer plates, where the heat dissipation portions of the plates are exposed between cells to contact the spacer, thereby enhancing heat absorption and dissipation.

This patent grant signifies a new intellectual property asset for AESC Japan Ltd. in the field of battery technology. While not imposing direct compliance obligations on other entities, it highlights advancements in battery thermal management that may influence future industry standards or product development. Companies involved in battery manufacturing or research may wish to review the patent details to understand the scope of AESC Japan's protected technology.

Source document (simplified)

← USPTO Patent Grants

Battery module with improved cooling performance, battery device including said battery module, and method for manufacturing said battery module

Grant US12586839B2 Kind: B2 Mar 24, 2026

Assignee

AESC JAPAN LTD.

Inventors

Yasuhiro Yanagihara, Masayuki Nakai

Abstract

A battery module is configured so that cooling performance can be improved. The battery module includes multiple battery cells stacked on each other, a spacer provided at an end portion of each battery cell, and heat transfer plates each of which has a heat absorption portion arranged between the multiple battery cells stacked on each other to absorb heat from the battery cells and a heat dissipation portion dissipating the heat absorbed by the heat absorption portion to the outside. The heat dissipation portion is bent relative to the heat absorption portion 20a, and is exposed through between the battery cells to contact the spacer. The spacer includes contact portions having contact surfaces contacting the heat dissipation portion, and a positioning portion having a surface facing a direction opposite to that of the contact surface and defining the position of the spacer.