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EV battery thermal propagation protection

Protect the battery where heat can travel next.

Siltherm builds thin thermal barriers for cell gaps, module boundaries and pack top covers.

Explore barrier locationsDiscuss an EV application
Battery barrier placement mapThree high-value positions in the battery architecture

A complete barrier component

Balance thermal protection with the way the battery moves.

A cell barrier must fit the gap and retain its function as the stack moves. Siltherm combines the insulation with the covering and mechanical response the interface needs.

Battery packCoupled architecture
A

Thin thermal resistance

Add protection without consuming valuable cell or module space.

B

Controlled compression

Match the component response to cell expansion and restraint.

C

Interface protection

Select coverings around isolation and adjacent conductive parts.

D

Ready-to-integrate geometry

Cut, encapsulate and combine layers for the intended assembly.

Application positions

See where the barrier enters the battery architecture.

The same insulation technology can take a different form at cell, module and pack level. The component is developed around the available gap and the interface it must protect.

Exploded electric vehicle battery pack showing cell modules, intermediate layers and the pack top cover01
  1. 01
    Pack top-cover barrierHigh-temperature protection beneath the lid
  2. 02
    Cell-to-cell barrierThin resistance across the shortest heat path
Pack architecture

Protection from the cell interface to the pack lid

Thin barriers can be configured between cells and beneath the top cover without consuming the space reserved for modules, clearances and service access.

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Prismatic battery-cell stack on an engineering test bench with narrow interfaces between adjacent cells02
  1. 01
    Prismatic cell stackRepeated cell interfaces define the available gap
  2. 02
    Compression restraintThe finished component must work with stack movement
Cell-stack integration

A thin barrier within a restrained cell stack

Cell geometry, compression duty and electrical interfaces are considered together before the barrier component is finalised.

EV product routes

Silthin for compact battery interfaces.

Use Silthin as the thermal foundation, then configure it for the cell or pack interface.

Ultra-thin microporous thermal barrier

Siltherm Silthin

Thermal resistance in a compact cell or module interfaceCompression response matched to the battery architectureCustom sizes with PET or application-specific encapsulation
Review the product-system route
Siltherm Silthin thin microporous thermal barrier product sample

From material to battery component

Define the product, then prove it in the intended assembly.

Silthin data defines the thermal material. The project then proves the configured barrier in its intended battery assembly.

Open engineering guidance
Product performance

Thermal and dimensional definition

Matched to the selected Silthin construction

Application confirmation

Cell, module or pack-cover fit

Evaluated in the intended geometry and test method

Application and custom requirements

Discuss the barrier your battery needs.

For material selection or a custom barrier, share the cell format, installation position, available gap and thermal, compression or electrical requirements. Leave your contact details so our team can review the application with you. Please keep the initial brief non-confidential.

Send your application brief
Thermal CalculationEngineering support