When and where is Battery Show Europe 2026?

Battery Show Europe 2026 runs June 9 to 11 at Messe Stuttgart, Germany. Envalior will exhibit at booth 5-C41.

What is Xytron M5080ET used for in EV batteries?

According to Envalior, Xytron M5080ET is a polyphenylene sulfide (PPS) compound intended for overmolding and functionalising busbars in high-voltage EV battery and powertrain systems. Envalior says it withstands temperatures above 150 degrees Celsius and showed stress cracking resistance more than 70 percent higher than comparable PPS compounds in thermal shock testing.

What is thermal runaway in an EV battery?

Thermal runaway is a self-accelerating heat event inside a battery cell that can spread to neighbouring cells and cause fire or explosion. It is triggered by overcharging, physical damage, or manufacturing defects. Preventing thermal runaway and stopping its spread between cells are key safety requirements for EV battery design.

What is China's GB 38031-2025 battery safety standard?

GB 38031-2025 is China's updated electric vehicle battery safety standard, introducing a no-thermal-propagation mandate. It takes effect for new vehicles on July 1, 2026, requiring that a thermal runaway in one cell must not propagate to neighbouring cells.

What does Stanyl SN-PURE do in an EV battery?

According to Envalior, Stanyl SN-PURE is an electrolyte additive that forms a thin protective layer on the cell cathode surface. Envalior says it reduces heat generation during thermal abuse by approximately one-third and interrupts self-accelerating chemical reactions that contribute to thermal runaway.

What is Tepex and how does it help EV battery safety?

Tepex is a continuous-fibre-reinforced thermoplastic from Envalior. According to Envalior, it acts as a thermal barrier between battery cells at pack level, delaying the propagation of critical temperatures to neighbouring cells and resisting particle bombardment during a thermal runaway event.

What thermal shock resistance properties does Pocan BFN4221Z offer for EV battery junction boxes?

According to Envalior's press release, Pocan BFN4221Z is an impact-modified PBT grade achieving 2.9 percent elongation at break, UL 94 V-0 flame classification in all colours at 0.4mm, and a maximum Comparative Tracking Index of 600 to IEC 60112. These properties are intended to support thermal shock resistance in large EV battery junction box housings that contain metal inserts and integrated busbars.

How does Envalior's thermal runaway toolbox address GB 38031-2025 compliance?

Envalior says its combined Stanyl SN-PURE and Tepex toolbox operates at two levels: SN-PURE targets the onset of thermal runaway at the cell cathode, while Tepex acts as a structural barrier to delay or stop cell-to-cell propagation at pack level. Envalior says this multi-level approach is intended to help manufacturers meet the no-thermal-propagation requirements of GB 38031-2025, which takes effect July 1, 2026 for new vehicles in China.

Which thermoplastic materials does Envalior offer for high-voltage EV busbar applications?

Envalior's busbar thermoplastics portfolio includes Xytron PPS, Durethan PA6, Akulon PA66, Pocan PBT, and ForTii PPA grades. The new Xytron M5080ET grade is specifically intended for overmolding applications in high-voltage EV battery systems where thermal shock and stress cracking resistance are primary design requirements.

Envalior to present thermal management materials at Battery Show Europe 2026

Q: What is Envalior presenting at Battery Show Europe 2026?

Envalior says it will present three engineering thermoplastic innovations intended for EV battery thermal management, busbar durability, and thermal runaway mitigation. These include Xytron M5080ET PPS, Pocan XHR and BFN Z PBT grades, and a Stanyl SN-PURE and Tepex thermal runaway toolbox.

Category: Automotive, Batteries, Materials, Power Electronics, Regulation & Policy, Thermal Management

June 8, 2026

Envalior high-voltage EV battery pack with exposed internal busbars and cell architecture, illustrating EV battery thermal management materials presented at Battery Show Europe 2026 in Stuttgart.

Envalior’s engineering thermoplastics for EV battery thermal management span busbar overmoulding, junction box housings, and cell-level thermal runaway mitigation

(Image courtesy of Envalior)

Envalior will present three engineering thermoplastic innovations at Battery Show Europe 2026 in Stuttgart, intended for thermal management, busbar durability, and thermal runaway mitigation in high-voltage EV batteries. Envalior says the materials address persistent thermal management challenges in battery component design, from junction box reliability to cell-level safety compliance.

New PPS compound intended for EV battery busbar thermal management

High-voltage EV battery systems expose busbars to repeated thermal stress, and stress cracking under those conditions remains a design risk. Envalior’s Xytron™ M5080ET is a new polyphenylene sulfide (PPS) compound intended for overmolding and functionalising busbars. According to Envalior, it withstands temperatures above 150°C, and thermal shock testing across a range of -50°C to 180°C showed stress cracking resistance more than 70% higher than comparable PPS compounds. The material achieves UL 94 V-0 flame classification and is intended to support electrical safety and mechanical integrity across the service life of the component.

Xytron™ M5080ET sits within Envalior’s broader busbar thermoplastics portfolio, which includes Durethan® PA6, Akulon® PA66, Pocan® PBT, and ForTii® PPA grades.

Pocan® grades intended for junction box thermal shock resistance

Battery junction boxes carry significant thermal shock risk due to their size, the number of metal inserts they contain, and the integration of metal busbars. Envalior’s Pocan® XHR grades are intended to address this through enhanced elongation at break, improved hydrolysis resistance, and strong heat ageing performance. Where flame retardancy is also required, the impact-modified Pocan® BFN Z grades offer a combination of high elongation at break that conventional flame-retardant PBT grades do not. According to Envalior’s press release, the Pocan® BFN4221Z grade achieves 2.9% elongation at break, attains UL 94 V-0 classification in all colours at 0.4mm, and carries a maximum Comparative Tracking Index of 600, meeting the electrical reliability demands of high-voltage battery environments.

Stanyl® and Tepex® toolbox targets GB 38031-2025 battery safety requirements

Thermal runaway prevention is now a regulatory requirement as well as an engineering goal. China’s GB 38031-2025 battery safety standard takes effect for new vehicles on July 1, 2026, introducing a no-thermal-propagation mandate. Envalior has developed a technology toolbox combining two materials intended to address this at multiple levels. According to Envalior, Stanyl® SN-PURE acts as an electrolyte additive that forms a thin protective layer on the cell cathode surface, reducing heat generation during thermal abuse by approximately one-third and interrupting self-accelerating reactions. Tepex®, a continuous-fibre-reinforced thermoplastic, acts as a thermal barrier between cells at battery pack level and, according to Envalior, resists both elevated temperatures and particle bombardment if a runaway is already underway.

Envalior says the combined approach can help battery manufacturers meet both onset inhibition and propagation requirements of the standard, with applicability extending to solid-state battery architectures as they scale toward commercialisation.

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