At first look, the Aria EV seems not a lot completely different than some other student-built electrical prototype—no completely different than the battery-powered cars built by engineering students from dozens of universities yearly. Beneath its panels, nonetheless, is a problem to the trendy auto trade: What if electric vehicles had been designed to be repaired by their house owners?
The Aria undertaking started in 2024, when roughly 20 college students assembled at Eindhoven University of Technology in the Netherlands below the college’s Ecomotive crew construction, which operates like a small startup. College students apply, are chosen, and spend a 12 months growing a automobile in a setting meant to reflect trade follow.
The aim, says crew spokesperson Sarp Gurel, “was to make the automobile as accessible and repairable as attainable.” Gurel, who graduated final July with a bachelor’s diploma in industrial engineering and is presently working towards a grasp’s diploma at Eindhoven, says the Aria EV is just not but highway authorized. Its function is to display that repairability may be embedded into EV structure from the outset. With that goal in thoughts, the crew targeted first on essentially the most difficult and costly part in virtually any EV: the battery.
Modular Battery Design in EVs
Aria’s whole battery capability is 13 kilowatt-hours (kWh), which is much beneath 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 automobile or neighborhood EV, which is extra applicable for a student-built prototype targeted on idea validation quite than long-range freeway journey.
What distinguishes Aria is just not the battery’s measurement, however its construction. Quite than housing the 13 kWh in a single sealed pack, the crew divided the full 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 exchange modules.
The modules sit in bolstered compartments beneath the automobile flooring and are secured utilizing a bottom-latch system. When the automobile is totally powered down, a latch may be made to mechanically launch a module. Built-in interlocks isolate the high-voltage connection earlier than a module may be lowered. This mix of {hardware} and software program ensures that component-level alternative is simple and comparatively protected, bringing the thought of “repairability by design” right into a tangible, hands-on type. Even with this cautious design, modular batteries introduce technical issues that should be managed, notably when integrating completely different modules over the automobile’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 crew is integrating a student-designed pack right into a Stellantis automobile 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 crew developed a diagnostic app that may be accessed by way of a devoted USB-C port. When the consumer connects their smartphone, the app presents a 3D visualization on the telephone display that factors out faults, locates issues, identifies the required instruments to repair them, and supplies step-by-step restore directions. The instruments themselves are saved within the automobile. The system goals to scale back as many limitations as attainable for customers to keep up and prolong a automobile’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 trade development is towards built-in, interdependent programs that simplify manufacturing processes and minimize prices. This development 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 automobile for repairability entails tradeoffs that ripple throughout each system within the automobile.
Borgerson says that dividing programs into detachable items 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 elements take up house that might 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 automobile architectures, notes that EV batteries are already modular internally—cells type modules, and modules type packs—however making modules externally replaceable adjustments validation necessities. Excessive-voltage isolation, thermal efficiency, and crash integrity should stay sturdy even when power storage is split into detachable segments. In different phrases, what looks as if a easy option to make batteries user-friendly truly cascades into system-level design choices influencing security, thermal management, and automobile construction.
Right-to-repair legislation in Europe and the United States might push automakers to rethink sealed architectures for batteries and different elements. Financial incentives might additionally emerge from fleet operators or long-term house owners who profit from changing a fraction of a battery system quite than a whole 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, nevertheless 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 persistently 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 strong psychological issue, whilst charging infrastructure expands, and value sensitivity has intensified as government incentives fluctuate. Designing for modularity and repairability, as Aria does, should in the end deal with these client priorities. Any added value, weight, or complexity should be weighed towards a market that also rewards autos that go farther for much less cash.
In the end, nonetheless, 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 customers resolve it ought to be.
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