Stellantis Patents Foam-Based Battery Thermal Runaway Suppression System
Stellantis has received a patent for an innovative foam-based system designed to prevent thermal runaway in electric vehicle battery packs. The technology integrates directly into the pack structure. It activates to suppress fire propagation if a cell fails.
The foam expands upon detecting excessive heat or gas release. This action fills voids around affected cells to isolate them. The material also absorbs energy and cools the surrounding area.
Stellantis developed the system amid scaling back certain EV programs. The company previously paused production of the all-electric Ram 1500 REV. It also delayed higher-output versions of the Dodge Charger Daytona electric muscle car.
The patent describes the foam as lightweight and non-conductive. Deployment occurs automatically without external intervention. This approach aims to enhance safety in high-voltage lithium-ion batteries.
Thermal runaway remains a key concern in EV battery design. Incidents involve rapid temperature increases leading to fire or explosion. Existing mitigation includes venting systems and physical barriers.
Stellantis applies the technology across its brands including Dodge, Ram, Jeep, and Chrysler. The patent covers integration with various pack configurations. It supports both cylindrical and prismatic cell types.
U.S. regulators emphasize battery safety in EV approvals. The National Highway Traffic Safety Administration investigates thermal events. Manufacturers face recalls for inadequate protection measures.
This development follows industry investments in advanced safety features. Competitors explore similar chemical and mechanical suppression methods. Stellantis positions the foam system as cost-effective for mass production.
The patent award occurs as EV adoption faces scrutiny over fire risks. High-profile incidents involving stationary packs highlight needs. Integrated suppression reduces response time compared to external extinguishers.
Stellantis continues electrified vehicle development despite program adjustments. Hybrid and plug-in models gain priority in North American lineups. The company targets improved profitability in EV segments.
Battery suppliers collaborate on inherent safety improvements. Materials resist puncture and overcharge. Stellantis’ foam adds a secondary layer for containment.
Implementation timeline remains undisclosed. The system could appear in upcoming electrified models. Stellantis invests in 800-volt architectures for faster charging and efficiency.
This patent strengthens intellectual property in EV safety. Automakers race to address consumer concerns over battery fires. Enhanced protection supports broader market acceptance.
