At first look, the Aria EV appears to be like not a lot totally different than some other student-built electrical prototype—no totally different than the battery-powered cars built by engineering students from dozens of universities yearly. Beneath its panels, nevertheless, is a problem to the fashionable auto business: What if electric vehicles had been designed to be repaired by their homeowners?
The Aria challenge started in 2024, when roughly 20 college students assembled at Eindhoven University of Technology in the Netherlands below the college’s Ecomotive group construction, which operates like a small startup. College students apply, are chosen, and spend a yr creating a car in a setting meant to reflect business follow.
The purpose, says group spokesperson Sarp Gurel, “was to make the automobile as accessible and repairable as potential.” Gurel, who graduated final July with a bachelor’s diploma in industrial engineering and is at present working towards a grasp’s diploma at Eindhoven, says the Aria EV will not be but highway authorized. Its objective is to exhibit that repairability could be embedded into EV structure from the outset. With that goal in thoughts, the group targeted first on probably the most difficult and costly part in nearly any EV: the battery.
Modular Battery Design in EVs
Aria’s complete battery capability is 13 kilowatt-hours (kWh), which is way under the 50 to 80 kWh packs frequent in mass-market electrical sedans and SUVs. The dimensions is nearer to that of a light-weight city car or neighborhood EV, which is extra acceptable for a student-built prototype targeted on idea validation slightly than long-range freeway journey.
What distinguishes Aria will not be the battery’s dimension, however its construction. Somewhat than housing the 13 kWh in a single sealed pack, the group divided the whole capability into six smaller modules. Every module weighs about 12 kilograms—a lot simpler to deal with than the 400 kilograms or extra that’s typical of a traditional EV’s monolithic battery pack. This makes it possible for a single individual to take away, swap, and change modules.
The modules sit in strengthened compartments beneath the car ground and are secured utilizing a bottom-latch system. When the car is totally powered down, a latch could be made to mechanically launch a module. Built-in interlocks isolate the high-voltage connection earlier than a module could be lowered. This mixture of {hardware} and software program ensures that component-level substitute is easy and comparatively secure, bringing the thought of “repairability by design” right into a tangible, hands-on kind. Even with this cautious design, modular batteries introduce technical issues that have to be managed, significantly when integrating totally different modules over the car’s lifespan.
Joe Borgerson, a laboratory analysis operations coordinator at Ohio State University’s Center for Automotive Research in Columbus, notes one complication: Mixing new and aged battery modules can create challenges. Borgerson has spent the previous three years designing and constructing a battery pack from scratch as a part of the U.S. Department of Energy’s Battery Workforce Challenge. “Our group is integrating a student-designed pack right into a Stellantis car platform,” he says, “which has given me deep publicity to each automaker design philosophy and high-voltage EV structure,.”
To enhance the their automobile’s {hardware}, the Aria group developed a diagnostic app that may be accessed through a devoted USB-C port. When the consumer connects their smartphone, the app presents a 3D visualization on the telephone display screen that factors out faults, locates issues, identifies the mandatory instruments to repair them, and supplies step-by-step restore directions. The instruments themselves are saved within the car. The system goals to cut back as many boundaries as potential for customers to keep up and prolong a car’s service life.
College students at Eindhoven University of Technology unveiled their Aria EV prototype in November.Sarp Gürel
Challenges of EV Modularity
Whereas Aria prioritizes modularity, the broader EV business pattern is towards built-in, interdependent techniques that simplify manufacturing processes and minimize prices. This pattern is true for the structural battery packs for EVs as effectively.
Not like mainstream EVs, Aria treats energy storage as a replaceable subsystem. Whether or not it scales economically and structurally to bigger, highway-capable EVs stays an open query. However designing a car for repairability includes tradeoffs that ripple throughout each system within the automobile.
Borgerson says that dividing techniques into detachable models provides interfaces—mechanical fasteners, electrical connectors, seals, and security interlocks. Every interface should survive vibration, temperature swings, and crash forces. Extra interfaces can imply added mass and complexity in contrast with tightly built-in battery constructions. And these parts take up house that will in any other case be used for power storage.
Matilde D’Arpino, an assistant professor of mechanical and aerospace engineering at Ohio State whose analysis focuses on electrified powertrains and superior car architectures, notes that EV batteries are already modular internally—cells kind modules, and modules kind packs—however making modules externally replaceable adjustments validation necessities. Excessive-voltage isolation, thermal efficiency, and crash integrity should stay strong even when power storage is split into detachable segments. In different phrases, what looks like a easy technique to make batteries user-friendly truly cascades into system-level design selections influencing security, thermal management, and car construction.
Right-to-repair legislation in Europe and the United States might push automakers to rethink sealed architectures for batteries and different parts. Financial incentives might additionally emerge from fleet operators or long-term homeowners who profit from changing a fraction of a battery system slightly than a complete pack. However adopting this method would require adjustments throughout provide chains, certification processes, and repair fashions.
The Aria prototype isn’t able to go toe-to-toe with manufacturing EVs, however it demonstrates some proof-of-concept concepts about repairability.Sarp Gürel
Shopper expectations are additionally shaping the boundaries of what designs like Aria’s can turn out to be. Within the mainstream market, consumers constantly prioritize longer driving range and decrease sticker costs—two elements which have outlined competitors amongst fashions such because the Chevrolet Bolt EV, the Hyundai Ioniq 5, and the the Tesla Model 3. Range anxiety stays a robust psychological issue, whilst charging infrastructure expands, and value sensitivity has intensified as government incentives fluctuate. Designing for modularity and repairability, as Aria does, should finally take care of these shopper priorities. Any added value, weight, or complexity have to be weighed towards a market that also rewards automobiles that go farther for much less cash.
In the end, nevertheless, Aria inserts a special precedence into the equation: restore as a core design requirement. Whether or not that precedence turns into mainstream will rely much less on whether or not it may be engineered—and extra on whether or not regulators, producers, and shoppers determine it ought to be.
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