Systems and methods for batteries

The battery cell system with a deformable pad and elastic members ensures consistent compressive pressure on solid-state battery stacks, addressing deformation and pressure loss issues, thus improving electrode contact and battery performance.

WO2026156216A1PCT designated stage Publication Date: 2026-07-23BLUE CURRENT INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BLUE CURRENT INC
Filing Date
2026-01-16
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Challenges in maintaining uniform, high pressure on solid-state battery cell stacks due to issues like deformation, creep, and pressure loss, particularly with materials like foams or rubbers, and difficulty in constraining sides to prevent shear moments and yield strength, which affect cell performance and longevity.

Method used

A battery cell system with a deformable pad positioned in a recess between a plate and the cell stack, constrained by the recess to maintain axial pressure, and elastic members that exert extension forces to ensure consistent compressive pressure, using incompressible materials to prevent deformation and pressure loss.

Benefits of technology

Maintains uniform high pressure on the cell stack, preventing deformation and pressure loss, thereby enhancing contact between electrodes and electrolytes, reducing capacity fade, and improving the performance and longevity of solid-state batteries.

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Abstract

Battery cell systems may have a first plate, a second plate, a first deformable pad interposed between the first plate and the second plate and configured to be compressed to a first pad compressed state, and a battery cell stack having a first stack surface at a first end, and the first plate is coupled to the second plate, the battery cell stack is interposed between the first plate and the second plate, the first deformable pad is in the first pad compressed state, and the battery cell stack is under a compressive pressure. Some systems have a plate assembly having the second plate, a third plate movably coupled to the second plate, and a plurality of elastic members interposed between the second plate and the third plate, and the plurality of elastic members are compressed between the second and third plates.
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