The Rawsuns SECC is an automotive- and charging-grade communication controller designed for European-standard EV charging stations (EVSE). It manages real-time information exchange between the charging station and electric vehicles, guiding the entire CCS charging session from plug-in to full handshake completion. Compliant with ISO 15118, DIN 70121, IEC 61851-1, and the upcoming EN ISO 15118-20:2022 standard, the SECC module eliminates protocol complexity for charger manufacturers — enabling seamless, secure, and future-proof DC fast charging with native V2G (Vehicle-to-Grid) and Plug & Charge (PnC) support.
🇪🇺 EU 2027 Mandate Ready — Fully aligned with Delegated Regulation (EU) 2025/656, mandating PnC and V2G capabilities effective 2027.
Core Functions
| Function | Description |
| EV–EVSE Communication | Manages bidirectional data exchange between charging station and EV during the entire charging process |
| V2G Protocol Stack | Complete Vehicle-to-Grid protocol stack — forwards EV requests to EVSE and feeds EVSE status back to the vehicle |
| PLC DC Charging (HPGP 1.1) | HomePlug Green PHY V1.1-compliant powerline communication for CCS DC charging |
| CP Status Detection | IEC 61851-1 compliant Control Pilot signal monitoring (±12V, 1 kHz, 5% duty cycle) |
| Multi-Interface Connectivity | RS-232, Ethernet (RJ45), CAN Bus, TF card for configuration, debugging, and firmware upgrade |
| OCPP Integration | Upper-layer OCPP communication control for remote management, authentication, and cloud connectivity |
| Modular Architecture | Core board + motherboard design — highly portable; core board extractable for custom pile development |
Why SECC
- 🇪🇺 EU Regulation 2027 Compliant: Supports EN ISO 15118-20:2022 with mandatory Plug & Charge (PnC) and V2G — future-proof your charging stations before the 2027 deadline.
- Zero Protocol Burden for Charger Makers: SECC handles all ISO 15118 / DIN 70121 protocol details internally. Charging station controllers communicate via simple RS-232 or Ethernet — no need to implement complex PLC or V2G stacks.
- Complete V2G & PnC Stack: Native support for bidirectional energy transfer and certificate-based Plug & Charge. EVs authenticate and authorize automatically upon plug-in.
- HPGP 1.1 PLC Communication: Industry-standard HomePlug Green PHY for robust, interference-resistant powerline data transmission between EV and EVSE.
- Rich Interface Portfolio:
- RS-232 (115200 baud) — internal configuration
- RJ45 Ethernet — upgrade & communication
- CAN 2.0 (250K baud, GB/T 27930) — BMS communication
- TF Card slot — logging & firmware storage
- Core Board + Motherboard Design: Modular architecture allows the core board to be extracted and re-used across different charging pile form factors — dramatically reducing development time and BOM cost.
- OCPP-Ready: Upper-layer OCPP protocol support enables remote station management, user authentication, smart charging scheduling, and over-the-air firmware upgrades.
- Ruggedized for Harsh Environments: Operates from −40°C to +85°C, with industrial-grade components rated for outdoor charging station deployment.
Technical Specifications
| Parameter | Specification |
| Input Voltage | DC 9V – 32V |
| Power Consumption | ~1.2W |
| PLC Standard | HomePlug Green PHY 1.1 (HPGP 1.1) |
| CP Detection | PWM: ±12V (5%), 5% duty cycle (±1%), 1 kHz (±1%) |
| CAN Interface | CAN 2.0, GB/T 27930, 250K baud |
| RS-232 | 115200 baud (internal configuration) |
| Ethernet | RJ45 (upgrade & communication) |
| Operating Temperature | −40°C to +85°C |
| Communication Protocols | ISO/IEC 15118-1/2/3, DIN 70121, IEC 61851-1 |
| Advanced Features | V2G, PnC, HPGP V1.1, OCPP, Customization support |
| EU Compliance | EN ISO 15118-20:2022, Delegated Regulation (EU) 2025/656 |
Interface Definition (17-Pin Connector)
| Pin | Signal | Description |
| A | GND | Signal Ground |
| B | RX | RS-232 RXD (Channel 1) |
| C | TX | RS-232 TXD (Channel 1) |
| D | GND | Signal Ground |
| E | RX | RS-232 RXD (Channel 2) |
| F | TX | RS-232 TXD (Channel 2) |
| G | POWER | Emergency Stop Power |
| H | SIG | Emergency Stop Signal |
| I | GND | Signal Ground |
| J | P | CAN_H |
| K | N | CAN_L |
| L | V− | Power Ground |
| M | V+ | Power Positive (DC 9–32V) |
| N | ENET | Ethernet Port (RJ45) |
| O | PD | Plug Detection Signal |
| P | PE | Charging Gun Earth |
| Q | CP | Control Pilot |
Mechanical & Enclosure
- Form Factor: Compact modular design (core board + motherboard)
- Mounting: DIN-rail or screw-mount compatible
- Connector: 17-pin industrial connector
- Dimensions: See mechanical drawing (ref: Section 5, External Dimensions)
- Cooling: Passive (no fan required at ~1.2W dissipation)
Applications
- European-Standard DC Fast Charging Stations: CCS-enabled public and fleet charging infrastructure.
- AC & DC Charging Piles: Residential, commercial, and highway fast-charge deployments.
- V2G Bi-Directional Charging Hubs: Grid services, peak shaving, and energy storage applications.
- Fleet Charging Depots: Logistics hubs, bus terminals, and commercial vehicle charging.
- Charging Station OEMs: Core module for manufacturers building EU-compliant charging equipment.
Standards & Compliance
| Standard | Coverage |
| ISO/IEC 15118-1/2/3 | V2G, PnC, TLS security, communication layers |
| EN ISO 15118-20:2022 | EU 2027 mandatory standard (PnC + V2G) |
| DIN 70121 | EU DC charging communication |
| IEC 61851-1 | CP status detection |
| GB/T 27930 | China DC charging (CAN interface) |
| HPGP 1.1 | PLC physical layer |
| OCPP | Remote management & cloud integration |
| EU 2025/656 | Delegated regulation — 2027 mandatory PnC/V2G |