Setting Up a Hands-Free Charging Depot for Robotaxis: A Step-by-Step Guide with Rocsys M1

Introduction

Robotaxis are hitting the roads at an accelerating pace, and with them comes the need for automated, hands-free charging solutions that keep depots running without human intervention. Rocsys, a Dutch-American company, has introduced the Rocsys M1—the world’s first overhead charging system designed specifically for robotaxi depots. This guide walks you through deploying the M1 system, which can serve up to 10 bays from a single overhead unit, and highlights what you need to get started.

What You Need

Before you begin, gather the following components and prerequisites:

• Rocsys M1 overhead charging unit (one per up to 10 parking bays)
• Robotaxis equipped with compatible charging ports (the system uses a proprietary connector or industry-standard CCS, depending on configuration)
• Dedicated power supply capable of delivering the required current (consult Rocsys for specs)
• Fleet management software that can integrate with the M1 API (e.g., to schedule charging sessions)
• Depot layout plan showing bay positions and access routes for autonomous vehicles
• Safety equipment such as emergency stop buttons and ground markings
• Installation tools (mounting brackets, electrical conduits, network cabling)

Step-by-Step Instructions

Step 1: Assess Your Depot and Determine Bay Configuration

Start by analyzing your robotaxi depot's layout. The M1 is designed to cover up to 10 parking bays from a single overhead unit. Mark the positions where robotaxis will park for charging. Ensure the bays are aligned in a straight line or a gentle curve so the overhead arm can reach each vehicle without obstruction. Consider the turning radius and parking accuracy of your robotaxis—they need to stop within a tolerance of a few inches for the charging arm to connect. Consult Rocsys’s site survey guidelines to confirm clearances and electrical load.

Step 2: Install the Overhead Charging Unit

Mount the M1 overhead unit on the ceiling above the center of the bay line. Use the provided brackets to secure it to structural supports (I-beams or concrete). The unit houses a robotic arm and power electronics. Run high-voltage cables from your main electrical panel to the unit, and connect low-voltage control and network cables. Ensure the installation meets local electrical codes and that the unit is grounded properly. After mounting, power up the unit and perform the initial calibration so the arm knows the exact coordinates of each bay.

Step 3: Integrate with Fleet Management Software

The M1 communicates with your existing fleet management system via a REST API. You’ll need to set up an integration that triggers charging sessions based on battery state of charge and vehicle schedule. For example, when a robotaxi docks in a bay, the fleet software sends a command to the M1 to start charging. Test the integration by simulating a few handshake cycles. Rocsys provides a developer portal with sample code and documentation for this step.

Step 4: Configure Autonomous Charging Sessions

With the hardware and software in place, configure the M1 to handle autonomous charging. The system uses a vision-based alignment system: cameras on the M1 detect the robotaxi’s charging port and guide the robotic arm to connect. You may need to train the system with your robotaxi’s specific port location. Set parameters such as charge rate (up to 150 kW DC) and end-of-charge voltage. Enable fallback procedures—for instance, if the arm fails to connect after three attempts, the vehicle should back out and retry.

Step 5: Validate and Monitor Daily Operations

Run a pilot with a few robotaxis to verify that the M1 reliably charges every vehicle across all bays. Monitor key metrics: connection success rate, average charging time, and power delivered. Use the M1’s dashboard to check for error logs. Over time, adjust the positioning or calibration if needed. Set up alerts for anomalies like overheating or communication drops. The system logs all sessions for reporting and billing.

Tips for a Smooth Deployment

• Start small: Begin with 2-3 bays before scaling to the full 10. This lets you fine-tune alignment and integration without disrupting the entire depot.
• Train your fleet: Ensure robotaxis are programmed to precisely stop within the designated marks. GPS alone may not be accurate enough; consider using visual markers or docking guides.
• Plan for redundancy: While one M1 unit can cover many bays, having a backup unit or a manual charging station can prevent downtime during maintenance.
• Check local regulations: Autonomous charging systems may require specific certifications. Engage with local electrical inspectors early in the process.
• Keep software updated: Rocsys regularly improves the M1’s algorithms for better port detection and arm speed. Subscribe to their update channel.
• Budget for scalability: The M1 system costs around $13 million for a full depot (Rocsys recently raised $13M for scaling). Factor in installation and integration costs.

Rocsys plans to roll out the M1 across North America and Europe starting in 2027. With this guide, you’re ready to build a hands-free charging depot that keeps your robotaxi fleet charged and ready for passengers.