Traction battery pouch cell stacking module
The traction battery pouch cell stacking module addresses uncontrollable thermal events by using end caps with burst foils for controlled gas release and heat absorption, improving safety and reducing thermal stress on adjacent cells.
DE102025115820B3Active Publication Date: 2026-06-03DR ING H C F PORSCHE AG
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- DR ING H C F PORSCHE AG
- Filing Date
- 2025-04-24
- Publication Date
- 2026-06-03
AI Technical Summary
Technical Problem
Existing traction battery pouch cell stacking modules lack effective control over thermal events, leading to uncontrollable gas release and potential thermal infection of adjacent cells due to uncontrolled tearing of the pouch cell film.
Method used
A traction battery pouch cell stacking module with end caps featuring degassing openings sealed by burst foils, allowing controlled gas release through defined pathways, and incorporating intermediate layers for volume equalization and heat absorption during thermal events.
Benefits of technology
The solution provides controlled gas release and reduced thermal stress by directing gas flow away from critical points, enhancing safety and reducing thermal impact on adjacent cells.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
The invention relates to a traction battery pouch cell stacking module (10) with several planar lithium-ion pouch cells (20) stacked in the stacking direction to form a cell stack (200), and a cell carrier frame (30) that encompasses and holds together the pouch cell cell stack (22) at its two longitudinal ends (201), wherein the cell carrier frame (30) has two end caps (31, 32) spaced apart from each other in the longitudinal direction (y) by longitudinal connectors (25) and held in position, which fluidly close the respective longitudinal end (201) of the cell stack in a cap-like manner, wherein at least one end cap (31) has a cap body (311) which has at least one degassing opening (40) which is fluid-tightly closed by a burst foil (50) which is fluid-tightly connected to the cap body (311).
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