DC Connection Unit (DCU)

For customers who do not require an onboard charger and prefer a dedicated DC charging solution, the DCU Enhanced is the perfect choice. This version enables direct DC charging, eliminating the need for an onboard charger—ideal for applications where fast, high-power charging is critical.

Whether for electric buses, trucks, or other heavy-duty vehicles, the DCU Enhanced stands out for its simplicity, reliability, and advanced communication protocols. It can operate independently or in a master-slave configuration with Stercom’s Onboard Charger, making it adaptable to different charging infrastructures.

Key Features:

• Standalone DC charging via CCS or in master-slave mode with a Stercom OBC
  Direct Powerline Communication (EPLC) with DC charging stations
• Complies with DIN 70121 / ISO 15118 high-quality communication standards
• Available in 250A or 500A versions
• Supports up to 950V battery capacity
• Functional safety compliance (ISO 26262) for secure operation
• SAE J1939 CAN communication for seamless vehicle integration
• Available in open-frame or IP67 enclosure for various use cases

The DCU Basic is ideal for customers who require a fully integrated charging solution with both AC and DC charging functions. In combination with Stercom’s Onboard Charger (OBC), it ensures a seamless charging process: the OBC manages the charging control, while the DCU provides a safe and efficient connection to the vehicle battery.

This version is perfectly suited for fleet operators, commercial vehicles, and customers who prefer an onboard charging solution for maximum flexibility. The DCU Basic enables optimized energy transfer and guarantees fast and efficient vehicle charging.

Key Features:

• Connects the CCS DC pins directly to the high-voltage battery
• Manages the interface to a DC charging station (EVSE) for DC fast charging
• Connection via Type 2 CCS DC pins
• High-quality communication protocol via Powerline Communication (EPLC) according to DIN 70121 or ISO 15118 for DC charging
• 250A DC charging current, optionally 500A
• Supports battery capacities up to 950V
• SAE J1939 CAN communication with the vehicle CAN bus