Redox battery cell connections

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 31st, 2026

Detected March 31st, 2026

Summary

USPTO granted patent US12592405B2 to Standard Energy Inc. covering redox battery cell connections with positive and negative bus bars that electrically connect stacked cells in parallel while mechanically fastening the stack. The patent names Dongyoung Lee, Bugi Kim, and Kihyun Kim as inventors.

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What changed

USPTO granted Patent No. US12592405B2 to Standard Energy Inc. on March 31, 2026. The patent covers a redox battery system where positive and negative conducting bus bars extend in the stacking direction to connect multiple battery cells in parallel, with one or both bus bars also serving as mechanical fastening means. CPC classifications include H01M 8/18-188, H01M 8/0247, H01M 8/004246, and H01M 8/248.

Patent grants do not impose compliance obligations on other entities. Companies developing redox or flow battery systems should review the claims to assess potential overlap with their own technology and consider freedom-to-operate implications. The patent expires 20 years from the August 15, 2022 filing date.

Source document (simplified)

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Connections for redox battery integration

Grant US12592405B2 Kind: B2 Mar 31, 2026

Assignee

Standard Energy Inc.

Inventors

Dongyoung Lee, Bugi Kim, Kihyun Kim

Abstract

A redox battery comprises a plurality of redox battery cells stacked in a stacking direction, wherein each of the redox battery cells comprises a first half cell connected to a positive current collector, a second half cell connected to a negative current collector and an ion exchange membrane separating the first and second half cells. The redox battery additionally comprises a positive conducting bus bar extending in the stacking direction and electrically connecting the positive current collectors of the redox battery cells in parallel, and a negative conducting bus bar extending in the stacking direction and electrically connecting the negative current collectors of the redox battery cells in parallel. One or both of the positive and negative bus bars are configured as fastening means for mechanically fastening the stacked redox battery cells in the stacking direction.