Rhombus launches serial switching DC fast charger dispenser

Rhombus Energy Solutions’s new RES-D3-CS20 DC fast charger dispenser is now available for immediate ordering. The D3 design allows multiple remote EV charging dispensers to be connected to a single Rhombus power control system (PCS), potentially reducing total EVSE costs for electrified fleets.

Most of today’s DC fast charging systems that support remote dispensers have a 1:1 relationship between the dispenser and the PCS, but for many EV fleet customers and use cases, this is not the most economical approach. Rhombus consulted with a number of EV fleet operators and OEMs, and concluded that, for use cases such as electrified school bus fleets and some delivery services, having multiple dispensers that share a PCS significantly reduces overall system costs.

There are a variety of different options for sharing a PCS across multiple dispensers, each with its own advantages and tradeoffs. Some competitive designs that use one PCS to drive multiple dispensers require a power switching system to connect the dispensers to the PCS. The Rhombus D3 switching dispenser serially connects the dispensers to the PCS. Up to five dispensers can be connected serially to a single PCS using one DC power line, which Rhombus says can lower installation costs by reducing the number of trenches required by up to 80%.

“This dispenser will work with current and future Rhombus power control systems and provides full bi-directional capability to support V2G operation,” said Rhombus CEO Rick Sander. “We believe that the D3 switching dispenser will accelerate the deployment of electric medium- and heavy-duty vehicles by significantly reducing EVSE cost per port as well as overall installation costs.”

“Our D3 switching DC fast charging dispenser combines cutting-edge high-power technology into a small, space-saving package,” said CTO Joseph Gottlieb. “We have talked with a number of our current and prospective customers to understand their needs for a switched charging dispenser, [and] the D3 meets those needs with industry-leading technology and capabilities.”

Source: Rhombus Energy Solutions

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