Battery Module Partition Plate Venting for Thermal Runaway Gas Release
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Solution Overview
Problem
Thermal runaway in battery modules or packs often results in untimely gas exhaust, leading to potential failure due to trapped gases and increased pressure, which can cause the battery to burst.
Innovation Solution
A partition plate with exhaust holes oriented in multiple directions, including a first direction and a second direction at an angle to the vertical, and an exhaust hood to enhance gas discharge, combined with a pressure relief mechanism at the top and bottom of the battery cell, facilitating timely gas release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exhaust holes are provided only in the vertical direction, then the structure is simple, but gas exhaust is untimely and may cause battery bursting
Solution Approach 1:
The patent applies dimensionality change by configuring exhaust holes in multiple spatial directions (vertical, inclined, and horizontal directions) rather than only in the vertical direction. This multi-directional exhaust hole arrangement enables gas to be discharged along different paths, preventing gas trapping and reducing the risk of battery bursting while maintaining structural simplicity.
2Productivity
If exhaust holes are oriented only vertically, then the exhaust structure is simple, but gas may be trapped and pressure builds up
Solution Approach 1:
The patent applies segmentation by dividing the exhaust function into multiple exhaust holes oriented in different directions (vertical, inclined at angles, and horizontal). This segmentation of the exhaust pathway allows gas to be discharged through multiple channels simultaneously, improving gas discharge efficiency and preventing pressure buildup without requiring a complex overall structure.
3Strength
If the partition plate structure is simplified, then manufacturing is easier, but rigidity and bending resistance are reduced
Solution Approach 1:
The patent applies curvature by designing the partition plate with an arc-shaped configuration instead of a flat structure. This arc-shaped design inherently provides better bending resistance and structural strength while maintaining manufacturing simplicity, as the curved geometry can be formed through standard molding processes.
Data Source
AI summary
This application discloses a partition plate, a partition plate assembly, a battery module, a battery pack, and an electrical device, and belongs to the technical field of batteries. The partition plate of this application is applied to the battery module, the partition plate including: a plurality of exhaust holes, a portion of the exhaust holes in the plurality of the exhaust holes having an exhaust direction provided along a first direction, and another portion of the exhaust holes in the plurality of the exhaust holes having an exhaust direction provided along a second direction, where the first direction and the second direction are provided at an included angle to the vertical direction, respectively, and the first direction and the second direction are provided at an included angle.