Battery End Cover Assembly Patent

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 31st, 2026

Detected March 31st, 2026

Summary

USPTO granted patent US12592461B2 to Contemporary Amerex Technology (Hong Kong) Limited for a battery end cover assembly with fool-proof structural features. The patent covers an end cover body with oppositely arranged edges, an electrode terminal passing through, and a connecting area positioned asymmetrically for electrical connection with electrode assembly tabs. The invention includes 15 claims and was filed as Application No. 19056192.

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What changed

USPTO granted Patent No. US12592461B2 to Contemporary Amerex Technology (Hong Kong) Limited on March 31, 2026. The patent covers an end cover assembly for battery cells featuring a fool-proof structural part positioned on the interior-facing side of the end cover body, with an electrode terminal containing a connecting area for electrically connecting with electrode assembly tabs. The distance positioning between the connecting area and the first/second edges creates an asymmetric design intended to prevent incorrect assembly orientation.

This is a routine patent grant notice with no compliance deadlines or required actions for third parties. Companies manufacturing battery cells may wish to review the patent claims to ensure their products do not infringe on the protected design. The patent has 15 claims covering various aspects of the end cover assembly including H01M50/147, H01M50/531, and related CPC classifications.

Source document (simplified)

← USPTO Patent Grants

End cover assembly, battery cell, battery, and electrical apparatus

Grant US12592461B2 Kind: B2 Mar 31, 2026

Assignee

CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventors

Yuyong Lei, Zhijun Guo, Peng Wang, Chuan Li

Abstract

An end cover body comprises a first edge and a second edge which are oppositely arranged in the width direction of the end cover assembly; the fool-proof structural part is located on the side of the end cover body facing the interior of the battery cell; the electrode terminal passes through the end cover body, comprises a connecting area facing the interior of the battery cell; the connecting area is used for electrically connecting with a tab of an electrode assembly; in the width direction, the distance from the connecting area to the first edge is larger than the distance from the connecting area to the second edge; the fool-proof structural part is at least partially located on the side of the connecting area close to the first edge.