EPO Patent Publication: Battery Pack with Housing

ChangeBridge: EPO Bulletin - Batteries (H01M)

Published March 18th, 2026

Detected March 24th, 2026

Summary

The European Patent Office has published a new patent application, EP4712234A1, for a battery pack with a housing, cell group, and reinforcing plates. The patent, filed by Eve Energy Co., Ltd., describes specific structural components designed to enhance the battery pack's integrity.

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What changed

The European Patent Office (EPO) has published patent application EP4712234A1, detailing a battery pack design submitted by Eve Energy Co., Ltd. The application describes a battery pack comprising a housing, a battery cell group, and reinforcing plates. Each reinforcing plate includes a foam adhesive layer encapsulated by a fiberglass cloth layer, with these plates positioned on the side walls of the battery cell group to enhance structural integrity.

This publication represents a new patent filing and does not impose immediate compliance obligations on regulated entities. However, it is relevant for manufacturers in the battery sector, particularly those involved in product development and intellectual property strategy. Companies operating in this space should be aware of this filing as it pertains to advancements in battery pack technology and design.

Source document (simplified)

← EPO Patent Bulletin

BATTERY PACK

Publication EP4712234A1 Kind: A1 Mar 18, 2026

Applicants

Eve Energy Co., Ltd.

Inventors

ZHANG, Guojiang, QIU, Wencong, XU, Yuhong, JIANG, Jibing

Abstract

A battery pack is provided. The battery pack includes a housing (1), a battery cell group (2), and a plurality of reinforcing plates (3). Each of the plurality of reinforcing plates (3) includes a foam adhesive layer and a fiberglass cloth layer. The foam adhesive layer encapsulates the fiberglass cloth layer. The battery cell group (2) is arranged in the housing (1). Each of two side walls of the battery cell group (2) along a length direction of the battery cell group (2) is arranged with a corresponding one of the plurality of reinforcing plates (3). The foam adhesive layer is attached to a corresponding one of the two side walls of the battery cell group (2).

IPC Classifications

H01M 50/213 20210101AFI20260126BHEP H01M 50/242 20210101ALI20260126BHEP H01M 50/291 20210101ALI20260126BHEP H01M 50/293 20210101ALI20260126BHEP H01M 10/6567 20140101ALI20260126BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR

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