Stellantis Patents Innovative Multifunctional Hood for EVs

The shift toward electric vehicles (EVs) has revolutionized automotive design, prompting automakers to rethink spaces traditionally occupied by internal combustion engines (ICEs). A recently unveiled patent, granted to Stellantis early today on the United States Patent and Trademark Office (USPTO) website, takes this evolution a step further, proposing a redefined hood design that prioritizes accessibility, ergonomics, and user convenience for the front cargo compartment—or “frunk.”

A New Hood Concept for Front Cargo Spaces – 

The patent introduces an advanced hood concept specifically designed for vehicles that utilize their engine compartments as cargo spaces. Unlike traditional hoods that open at angles of 45° to 50°, this innovative design opens at angles of 90° to 120°, offering superior clearance for loading and unloading.

Interestingly, most of the patent drawings showcase this design on a Ram 1500 REV, suggesting that Ram may expand its reputation for functionality from the rear to the front of the vehicle. This new multifunctional hood design complements Ram’s already patented multifunction tailgate, which has been celebrated for its versatility and practical applications.

Additionally, the side profile of the patent drawing resembles the design Stellantis teased for a midsized Ram pickup truck during the company’s EV Day 2021 presentation. Based on the unibody STLA Large architecture, that vehicle is expected to enter production sometime after 2026. Could this multifunctional hood design debut on the much-anticipated midsized Ram? Only time will tell.

A Closer Look at the Features – 

Multi-Door Configurations:

The patent outlines several hood configurations, including:

• Dual Longitudinal Doors: These doors open along the vehicle’s longitudinal axis, providing wide access to the cargo space.
• Bifold or Accordion Doors: These slide or fold to one side, offering compact yet comprehensive access.
• Roll-Up Doors: Similar to garage doors, roll-up doors roll away toward the windshield, grille, or fenders, depending on the design.

Each configuration is tailored to optimize usability and adapt to different vehicle designs, ensuring seamless integration with the body structure.

Unobstructed Entry and Ergonomics:

The design emphasizes a completely open cargo space. When the hood is in the open position, the area above the cargo space remains clear, thanks to precise door placement. The patent defines this clearance using an “imaginary cylinder” concept, ensuring no obstruction from the hood and enabling easy access from multiple angles.

Synergy with Ram’s Multifunctional Tailgate – 

Ram’s multifunctional tailgate—known for its swing-door, split-open, and fold-down capabilities—set a new standard for utility in the truck segment. Its success lies in its ability to adapt to various loading needs, whether it’s making heavy objects easier to lift into the bed or allowing closer access to cargo when opened sideways.

By incorporating this multifunctional hood design into vehicles like the Ram 1500 REV, Stellantis is creating a consistent user experience that maximizes functionality at both ends of the vehicle. Just as the tailgate has become a favorite feature among truck owners, a hood design with comparable versatility could redefine expectations for EVs.

Addressing EV-Specific Needs – 

In EVs, batteries are often placed beneath the passenger compartment, freeing up space in the front of the vehicle. This innovation takes advantage of that space for practical use, reimagining the traditional notion of a hood. By incorporating these adaptable door systems, the patent acknowledges the evolving role of the frunk in modern vehicle design.

For example, users of current EVs often report difficulty accessing their frunks due to limited hood angles. Heavy or bulky items become challenging to load, especially in confined spaces. This new hood design directly addresses such pain points, providing a user-friendly solution that meets the needs of modern EV owners.

Potential Applications and Benefits – 

While the design is particularly relevant for EVs, it could also benefit internal combustion engine (ICE) vehicles with reduced engine compartments or hybrid vehicles seeking dual utility from their front spaces.

Key benefits include:

• Improved User Safety: The design prioritizes user health and comfort by reducing the need to bend awkwardly and preventing head injuries.
• Enhanced Accessibility: Loading and unloading items from multiple angles ensures greater flexibility.
• Aesthetic Integration: The design maintains a seamless and visually appealing exterior, fitting within the vehicle’s body lines.

Future Implications – 

This patent reflects a broader industry trend of rethinking vehicle design in light of EV advancements. As automakers explore innovative ways to enhance usability and efficiency, patents like these pave the way for more practical, user-centric solutions.

Moreover, the hood’s adaptability—featuring customizable door types and opening mechanisms—suggests it could become a standard feature across various segments, from luxury EVs to practical family vehicles.

The new hood design represents a significant step forward in automotive innovation.