Assembled battery with gas discharge flow path configuration

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 31st, 2026

Detected March 31st, 2026

Summary

The USPTO granted Patent US12592449B2 to Vehicle Energy Japan Inc. on March 31, 2026, covering an assembled battery with improved gas discharge flow path configuration. The patent (Application No. 18002297, filed September 27, 2021) includes 11 claims and covers a design where batteries with gas discharge units are stacked with metal flow path members to efficiently channel discharged gas.

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What changed

USPTO granted Patent US12592449B2 to Vehicle Energy Japan Inc. for an assembled battery technology. The patent covers a configuration where multiple batteries, each containing an electric charger/discharger, electrolytic solution, and gas discharge unit, are stacked with their discharge surfaces aligned. A metal first flow path member is placed opposite the gas discharge units to create a first flow path, while a second flow path member forms a second flow path with smaller cross-sectional area. The invention includes a connector coupling the flow paths and a guide member partitioning space inside the connector.

This is a routine patent grant with no compliance requirements or deadlines. No regulatory obligations are imposed on manufacturers or other parties. The patent simply establishes intellectual property rights for Vehicle Energy Japan Inc. regarding this battery assembly design.

Source document (simplified)

← USPTO Patent Grants

Assembled battery

Grant US12592449B2 Kind: B2 Mar 31, 2026

Assignee

VEHICLE ENERGY JAPAN INC.

Inventors

Koji Chida

Abstract

An assembled battery includes: a plurality of batteries, each with a container that contains an electric charger/discharger and an electrolytic solution and a gas discharge unit on its one surface, wherein the plurality of batteries are stacked so that the one surface of each battery is aligned to be flush with the one surface of the other batteries; a metal first flow path member is placed opposite the surface with the gas discharge unit, and configures a first flow path unit for gas discharged from the gas discharge units of the batteries; a second flow path member that forms a second flow path unit with a smaller flow path cross-sectional area; a connector that couples the first and the second flow path unit via an opening in the first flow path member; and a guide member that partitions a space inside the connector. This configuration allows for efficient gas discharge.