Curbside electric vehicle (EV) charging offers undeniable convenience, especially for drivers needing to power up while spending a few hours away from home. However, the typical setup often involves chargers mounted on poles or standalone structures, reminiscent of parking meters or even integrated into lampposts. While functional, these installations can encroach upon valuable pedestrian space, narrowing sidewalks and potentially hindering accessibility. This challenge is particularly acute in dense urban environments where space is already at a premium.
Addressing this issue requires innovative thinking, and surprisingly, a groundbreaking solution emerges from an unexpected quarter. Rheinmetall, a prominent German company renowned as Europe’s largest arms maker, is also deeply invested in the future of mobility. Their answer to the urban charging conundrum is elegantly simple yet technologically advanced: replace sections of concrete curbs with discrete, high-performance Level 2 EV chargers. This approach to sidewalk EV charging promises to revolutionize how we integrate EV infrastructure into our cities.
Dubbed simply the Rheinmetall Curb Charger, this product is precisely what its name suggests. It’s a robust, modular unit weighing approximately 80 kilograms (176 pounds), constructed from durable stainless steel and aluminum. Its defining feature is its seamless integration: the Rheinmetall Curb Charger fits neatly into the sidewalk, replacing a standard curbstone. This means it has no support structure, allowing pedestrians to enjoy the full width of the sidewalk without obstruction. As depicted in materials from Rheinmetall, the charger sits flush, blending into the urban landscape.
Despite its unobtrusive design, the Curb Charger packs a significant punch. It’s a Level 2 EV charger capable of delivering up to 22 kW of power through a 400V three-phase electrical connection, facilitating relatively quick top-ups for EVs. For user interaction and connectivity, it’s equipped with an integrated 4G modem and an Ethernet port, alongside an RFID reader and a clear display. EV drivers can initiate and manage charging sessions conveniently via a smartphone app, or by scanning an RFID card or a QR code on the unit.
Durability and safety are paramount in the Curb Charger’s design. It boasts an impressive IP68 rating, signifying it can be submerged in water at least 3.2 feet (1.0 meter) deep for a minimum of 30 minutes without damage. Rheinmetall assures that the encapsulated electronics can withstand all types of weather. The enclosure incorporates built-in drains, so even during heavy rainfall, it can safely deliver power to a connected EV. To underscore this resilience, the company has even demonstrated someone pouring a bucket of water directly over the charging cable while in use. For added safety in flood-prone areas, a water level sensor automatically cuts power if the street water level rises excessively. Furthermore, a built-in heating system ensures the charger remains snow- and ice-free during cold weather, guaranteeing operational availability.
Regarding charging cables, the Rheinmetall Curb Charger follows a common European model for public charging: users must bring their own Type 2 cable. This is rarely an issue for EV drivers in Europe, who are accustomed to this “bring-your-own-plug” approach for curbside charging. This design choice also contributes to the unit’s sleek, integrated profile. Charging operators also benefit from a thoughtful design; if a unit malfunctions, a quick-release system allows the metal enclosure to be easily separated from the electronic module, enabling swift and simple replacement.
The Rheinmetall Curb Charger isn’t just a promising concept; it has already demonstrated its capabilities in demanding real-world conditions. For the past year, Rheinmetall conducted an extensive field trial with four of these innovative curb chargers in Germany. The results from this year-long test are compelling:
| Metric | Result from German Field Trial |
|---|---|
| Operational Uptime | Over 99% |
| Charging Sessions Delivered | Over 2,800 sessions |
| Trial Duration | 12 months |
| Operating Conditions | Successfully operated in all kinds of weather |
These impressive figures, achieved across a full year and diverse weather patterns, highlight the charger’s robustness and reliability. The high uptime signifies a dependable service for EV users, crucial for building confidence in public charging infrastructure.
The success of the Rheinmetall Curb Charger offers a promising glimpse into the future of urban EV charging. Innovative sidewalk EV charging solutions like this one, which prioritize space efficiency and aesthetic integration without compromising on power or durability, are vital. As cities worldwide grapple with the need to expand EV infrastructure, such discreet yet powerful options could play a significant role in accelerating EV adoption by making charging more accessible, convenient, and harmonious with the urban environment. With any luck, these types of solutions will catch on globally, making our transition to electric mobility smoother and more seamlessly integrated into our daily lives.
