Application engineering brief
Thermal Runaway Protection for Prismatic Cells
Define an inter-cell barrier from the prismatic cell geometry, gap, vent path and target propagation test.
The engineering problem
Start with the installed interface.
Large cell faces and narrow gaps create a demanding transient heat-transfer path while swelling and stack pressure change the installed condition.
A practical review combines barrier thickness, compressed state, electrical behavior, edge treatment and the module’s cell restraint and vent direction.
Position and function
Where this component works—and what it must do
- Between prismatic cell faces
- Cell top near vent features
- Module end plate
- Side wall and inter-module boundary
- Inter-cell thermal delay
- Dielectric separation
- Expansion accommodation
- Encapsulation for handling and dust control
Selection logic
Decision data customers and engineers expect
| Decision dimension | What must be defined |
|---|---|
| Cell event | Document chemistry, capacity, state of charge and initiation method. |
| Gap | Map beginning- and end-of-life spacing and compression. |
| Edge | Review frames, seams and bypass heat paths. |
| Validation | Set the temperature or propagation outcome and full test configuration. |
Data required
Send these inputs for a useful first review
- Cell make-up and dimensions
- Inter-cell gap and tolerance
- Expansion or stack-pressure target
- Thermal exposure and acceptance criterion
- Module section drawing
Continue the evaluation
Related engineering pathways
Frequently asked questions
Clear answers before sampling
Should the barrier fill the complete gap?
That depends on expansion, pressure and the selected construction. Nominal and compressed thickness must be reviewed together.
Why encapsulate aerogel?
Encapsulation can improve handling and particle control, but it also changes thickness, edges and thermal behavior.
Can a coupon result predict module propagation?
It can support screening, but it cannot replace module-level validation with the target cells and geometry.
Drawing-led response