Current collector, prismatic battery cell and associated positioning method

The primary and secondary current collectors with positioning blades and folding stops address the challenges of current collection and assembly stability in prismatic battery cells, ensuring precise positioning and stable operation.

FR3169020A1Pending Publication Date: 2026-05-29VERKOR SA
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Patent Information

Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
VERKOR SA
Filing Date
2024-11-25
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing prismatic battery cells face challenges in efficiently collecting current from electrodes, ensuring precise positioning of electrode stacks within the casing, and maintaining stable assembly during operation, which can lead to improper functioning and disposal of cells.

Method used

A primary current collector with a lateral section and positioning blades, and a secondary current collector with folding stops, facilitate precise positioning and secure attachment of electrode assemblies within the battery cell casing, ensuring efficient current collection and stable assembly.

Benefits of technology

The solution enables precise positioning and secure attachment of electrode assemblies, facilitating efficient current collection and stable operation, reducing the risk of assembly displacement and electrolyte flow interference.

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Abstract

The invention relates to a prismatic primary current collector (30) for a battery cell (1) comprising at least two lateral tabs (41); each lateral tab (41) comprising a main face (45) and a positioning blade (43) integral with the main face (45), the positioning blade (43) and the main face (45) being intended to prevent the translation of a current collection tab (55) of an electrode of the battery cell (1). The invention also relates to an assembly (7) and a prismatic battery cell (1) comprising such a primary current collector (30). The invention further relates to a positioning method (P1) and a manufacturing method (P2) for a battery cell (1). Figure 1
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