RW Energy Baoding 60 kWh 30 kW Energy Storage Integrated DC Fast Charging Station Success Case

Adopting an innovative integrated energy storage and fast charging architecture, this solution addresses insufficient grid capacity in urban built-up areas. Featuring a compact integrated design, full-range environmental adaptability and multi-vehicle compatibility, it enables lightweight deployment of energy replenishment stations in public parking lots, creating a replicable model for non-grid-expansion charging construction and distributed energy storage charging development in northern cities.

01 Project Overview

1.1 Project Background

With the surge in new energy vehicle (NEV) ownership in Baoding, the demand for charging in urban centers, commercial districts, and residential communities has grown rapidly. This project is located in a public parking lot in downtown Baoding, serving ride-hailing cars, private EVs, and corporate fleets. The site faced several practical challenges: limited grid capacity, high costs of infrastructure expansion, tight construction deadlines, and complex outdoor environments.

The project addressed three core challenges:

• Grid Capacity Constraints: Insufficient on-site power distribution prevented the deployment of high-power fixed chargers, while traditional grid upgrades were too costly and time-consuming.
• All-Weather Operational Requirements: Baoding’s climate involves freezing winters, rainy summers, and dusty spring/autumn seasons, requiring equipment with superior thermal and environmental protection.
• Rapid Deployment and Portability: Public sites do not allow for large-scale civil works, necessitating "plug-and-play" equipment with minimal infrastructure requirements.

RW Energy provided a 60 kWh / 30 kW Energy Storage Integrated DC Fast Charging Solution. This integrated system eliminates the need for grid expansion and complex civil works, enabling the rapid construction of high-reliability fast-charging points.

1.2 Core Technical Parameters

1.3 Project Design

The project utilizes an Integrated ESS + DC Fast Charging architecture. The built-in battery storage enables "charging at low valley rates and discharging at peak rates," achieving peak-shaving and emergency power backup. The design complies with outdoor safety standards, featuring robust grounding, insulation, and fireproofing. The full set of drawings covers layout, cable connections, ventilation, and emergency safety nodes, ensuring rapid installation and compliance.

02 Core Technology and Functional Advantages

2.1 Technical Performance Advantages

• Integrated Storage, Zero Grid Expansion: The built-in 60 kWh battery allows for rapid commissioning with only basic existing power. The 0.5C optimized design minimizes heat generation and extends battery life, ensuring long-term reliability.
• Multi-Protocol Compatibility: Provides a stable 30 kW output with customizable power settings. It supports global standards (GB/T, CCS1/2, CHAdeMO), ensuring 100% compatibility with almost all EV models.
• High Protection and Wide Temperature Range: IP54 and IK10 ratings protect against dust, rain, and impacts. The system operates stably between -30 °C and +55 °C, perfectly adapted to Northern China’s extreme seasonal shifts.
• Comprehensive Safety Framework: Equipped with RCD 30mA leakage protection, 20 kA surge protection, and intelligent thermal management. The system automatically derates power if the connector temperature exceeds limits.
• Smart O&M: Supports OCPP 1.6J for remote monitoring, billing, and firmware updates (OTA). The modular design ensures low failure rates and easy maintenance.

03 Rigorous Testing: Ensuring Reliability

Before delivery, all units underwent full type-tests at the RW Energy Laboratory:

• Full Cycle Testing: Verified 60 kWh capacity consistency and output stability through continuous charge/discharge cycles.
• Continuous Full-load Test: Operated at 30 kW for ≥ 8 hours to ensure efficiency stays above 94%.
• Environmental Simulation: Validated structural integrity under simulated -30 °C to +55 °C cycles, heavy rain, and dust.
• Protocol Interoperability: Confirmed 100% handshake success rate with mainstream EV brands.

04 Logistics and Execution

Equipment was secured in industrial-grade, shock-proof, and moisture-proof packaging for long-haul transport. All accessories, including charging guns and technical documents, were categorized and tracked to ensure on-time delivery to the Baoding site.

05 Installation and Operational Summary

5.1 Field Implementation

• Conducted site surveys and foundation positioning with a minimum 50 cm clearance for heat dissipation.
• Utilized forklift positioning for rapid anchoring, cable connection, and insulation verification.
• Strictly followed outdoor safety codes for waterproof and fireproof sealing.
• Performed power-on commissioning, protocol pairing, and network testing before official grid integration.

5.2 Operational Feedback

• Zero Expansion, Rapid Launch: Deployed and commissioned within one week without grid upgrades, significantly lowering CAPEX.
• 99.9% Availability: Stable operation through severe winters, heatwaves, and sandstorms.
• Enhanced User Experience: The 3-unit cluster effectively relieved peak-hour queues, increasing station capacity by over 50%.
• Low Maintenance: Remote monitoring reduced manual inspection frequency by 60%.

5.3 Device Operation and Management

• Discharge Activation: Equipped with a dedicated high-voltage rotary switch in the HV box for safe activation of the battery discharge circuit.

• Flexible Recharging: Supports battery recharging via 380 V AC grid (small current) or external DC chargers, allowing for flexible energy strategies.

• Visualized Status: The industrial touchscreen displays real-time data, including total voltage, SOC (State of Charge), cell voltage, temperature, and fault logs, enabling refined health management.

06 Life-cycle Managed O&M Services

RW Energy provides integrated O&M services for the Baoding station, specifically focusing on battery health, insulation performance, and fire safety. Our "Dedicated Support + Closed-loop Management" ensures the long-term efficiency and reliability of Baoding’s NEV charging network.

This project technology is fully compatible with international standards and ready for rapid global deployment. Contact us today to customize your energy storage and charging solutions!