Innovative Portable Fast Charger Powers EVs Without Robust Grid Connections
A remarkable innovation in electric vehicle charging, the Smart Charging Cube, offers an unprecedented level of flexibility and power. This mobile DC fast charging station can service up to four electric vehicles concurrently, delivering a substantial 400 kilowatts of power. Its unique capability lies in its independence from a high-capacity grid connection, achieved through integrated, large-scale battery systems. This feature makes it an ideal solution for various scenarios where conventional high-power charging infrastructure is impractical or unavailable, fundamentally transforming how electric vehicles, especially commercial ones, can be recharged.
The Smart Charging Cube, a modular and easily transportable direct current fast charging unit, distinguishes itself by providing considerable power output without necessitating a robust grid link. While it can supply up to 400 kW, it also has the potential to reach an astounding 1,000 kW when paired with an external Megawatt Charging System (MCS) cabinet. Remarkably, it only requires a minimal household mains connection of 32 amps, common in European residences. Conversely, its input current can escalate to 630 amps when recharging its substantial internal battery, particularly when no vehicles are connected for charging.
Equipped with battery capacities ranging from 500 to an impressive 1,100 kilowatt-hours, the Smart Charging Cube functions as a self-contained EV fast charger. This integrated battery system allows for operation in diverse locations without the need for extensive excavation or permanent electrical installations, a significant advantage for transient environments such as temporary work sites where electric trucks frequently require rapid power boosts.
It's important to understand the charging dynamics: while the battery-equipped fast charger can be linked to a typical household electrical outlet with a mere 32A connection, fully charging the largest battery at 400 volts would take approximately three and a half days. In stark contrast, utilizing a 630A connection drastically reduces this charging time to just four hours, highlighting the efficiency gains with higher amperage inputs.
This pioneering technology originates from AW Automotive, a German firm renowned for its stationary battery storage solutions. While this specific variant of the charging cube is distributed by Man Truck & Bus, primarily for their electric trucks and buses, the foundational product, known as the PowerCube, has seen deployment by numerous other entities globally. In the United States, similar portable charging concepts have been advanced by companies such as FreeWire and Electric Era. However, these American counterparts typically feature smaller battery capacities, making them more suitable for passenger electric vehicles rather than the larger, energy-demanding commercial trucks.
This innovative charging solution addresses critical infrastructure gaps, particularly in areas where establishing traditional high-power charging stations is either too costly or logistically challenging. By offering a high-capacity, portable, and grid-independent charging option, the Smart Charging Cube is set to accelerate the adoption and operational efficiency of electric fleets, ensuring that electric vehicles remain charged and productive regardless of their location.