MIDA 400kW Liquid-Cooled DC Fast Charger for Ultra-Fast EV Charging

Product Overview

MIDA Liquid-Cooled DC Charging Piles (300kW/350kW/400kW) represent the pinnacle of ultra-fast charging technology, designed to meet the growing demands of high-capacity electric vehicle batteries. As the EV market shifts towards larger battery packs and higher voltage architectures, the need for infrastructure that can deliver massive power safely and efficiently has never been greater. Our liquid-cooled charging solutions are engineered to provide a seamless, high-speed charging experience that rivals traditional refueling times.

The 400kW Liquid-Cooled DC Charger is a flagship product from MIDA Power, integrating state-of-the-art thermal management systems. Unlike traditional air-cooled systems that struggle with high current densities, our liquid-cooled technology actively manages the temperature of the charging cables and connectors. This allows for a much thinner and lighter cable that is easier for users to handle, while still being capable of delivering continuous currents up to 600A. This ensures that the charging station can operate at peak performance without thermal throttling, even in extreme ambient conditions.

Core Technical Advantages

Ultra-High Power Density and Efficiency

At the heart of our DC Fast Charging Station are high-efficiency Silicon Carbide (SiC) power modules. SiC technology offers significantly lower switching losses compared to traditional IGBTs, leading to system efficiencies exceeding 96%. This not only reduces operational costs for charge point operators (CPOs) but also minimizes the heat generated within the power cabinet, further enhancing the longevity of internal components.

Advanced Liquid Cooling System

The primary differentiator of our 350kW and 400kW models is the integrated liquid cooling unit. A specialized coolant is circulated through the charging cables and the contact pins of the connector. This system effectively absorbs the heat generated by high current flow, maintaining the cable surface temperature at a safe and comfortable level for users. The liquid-to-air heat exchanger within the cabinet is designed for maximum surface area, ensuring that heat is dissipated efficiently even when the ambient temperature reaches 50°C.

1000V High-Voltage Architecture

Designed for the future, our charging piles support a wide output voltage range from 150V to 1000V. This makes them compatible with a diverse range of vehicles, from standard 400V passenger cars to the latest 800V and 1000V high-performance EVs and electric buses. The intelligent control system automatically detects the vehicle's battery voltage and adjusts the output accordingly, ensuring optimal charging speeds across the entire SOC (State of Charge) curve.

Key Specifications

The MIDA liquid-cooled series is built to industrial standards, ensuring reliability in the harshest environments. Our Commercial EV Charger units undergo rigorous testing to meet global certifications including CE and UL (pending). Below are the primary technical specifications for our 300kW-400kW range:

• Input Voltage: 3-Phase 400V AC ±15% (Customizable for 480V)
• Output Power: 300kW / 350kW / 400kW
• Output Current: Up to 600A (Liquid-cooled cable)
• Voltage Range: 150V - 1000V DC
• Protection Rating: IP55 / IK10
• Communication Protocol: OCPP 1.6J (Upgradeable to 2.0.1)
• Connector Options: CCS1, CCS2, NACS, GBT
• Operating Temperature: -30°C to +55°C (Derating above 50°C)

The system also features redundant power module configurations. In the unlikely event of a single module failure, the system can continue to operate at a reduced capacity, ensuring that the station remains available for customers and minimizing downtime for operators.

Core Hardware Components

Industrial-Grade Power Modules

We utilize specialized 40kW or 50kW power conversion modules that are designed for continuous high-load operation. These modules feature independent air ducts or liquid-cooled plates, preventing dust and corrosive salt spray from entering the critical electronics. This "closed" cooling design significantly reduces maintenance requirements and extends the service life of the equipment in coastal or desert regions.

Smart Control and Communication

The main controller supports high-speed CAN bus communication with the vehicle and Ethernet/4G connectivity for backend management. With full support for OCPP 1.6J, operators can easily integrate our Charging Pile into their existing networks for monitoring, billing, and remote diagnostics. The 10-inch high-brightness touchscreen provides a clear interface for users, supporting multiple languages and RFID/Credit Card payment options.

Safety and Protection Systems

Safety is paramount in high-power charging. Our systems are equipped with multi-layered protection, including over-voltage, under-voltage, short-circuit, ground-fault, and over-temperature sensors. The liquid cooling unit has its own dedicated monitoring system that tracks coolant pressure, flow rate, and temperature, automatically shutting down the high-power output if any parameters deviate from the safe range.

Application Scenarios

Highway Charging Corridors

The primary application for 400kW liquid-cooled chargers is along major highways and intercity travel routes. By providing charging times of 10-15 minutes for an 80% charge, these stations eliminate "range anxiety" and enable long-distance EV travel for both passenger and commercial vehicles.

Public Fast-Charging Hubs

In urban environments, high-power hubs located in shopping centers or dedicated charging plazas serve high-mileage drivers like taxi and ride-share operators. The high throughput of our 350kW systems allows for more vehicles to be serviced per hour, maximizing the ROI of the charging site.

Heavy-Duty Fleet Depots

Electric trucks and buses require massive amounts of energy in short periods to maintain operational schedules. Our liquid-cooled DC piles are the ideal solution for fleet depots, providing the high current necessary to charge large battery packs during mandatory driver breaks or between shifts.

After-sales Advantages

MIDA Power is committed to providing world-class support for our global partners. We offer a comprehensive 2-year warranty on all liquid-cooled charging systems, with optional extensions up to 5 years. Our global service network provides technical support and spare parts availability to ensure that your stations remain operational.

We also provide extensive training programs for local installation teams and maintenance personnel. From site survey and grid connection advice to software integration and routine maintenance, MIDA’s engineering team is with you every step of the way. Our remote diagnostic capabilities allow us to resolve over 80% of software issues without a site visit, ensuring your uptime is maximized.

Deep Dive: Power Module Technology

The efficiency and reliability of a DC Fast Charger are primarily determined by its power conversion modules. MIDA uses cutting-edge 40kW and 50kW modules that utilize a three-level VIENNA rectifier topology and a full-bridge LLC resonant converter. This combination allows for a wide input voltage range and extremely low output ripple, which is critical for protecting the vehicle's battery management system (BMS).

Each module is hot-swappable, meaning maintenance can be performed without taking the entire charging station offline. The modules also feature intelligent sleep modes; during low-traffic periods, the system can deactivate unnecessary modules to maintain peak efficiency even at partial loads. This granular control is what sets our 400kW Liquid-Cooled Charging Pile apart from less sophisticated competitors.

Global Standards and Interoperability

As the global EV landscape evolves, interoperability is the key to a successful charging network. MIDA’s liquid-cooled systems are designed to be truly universal.

• CCS2 (Combined Charging System Type 2): The dominant standard in Europe, Australia, and parts of Asia. Our system fully supports the ISO 15118 standard, including Plug & Charge (PnC) capabilities for a seamless user experience.
• NACS (North American Charging Standard): With the industry-wide shift in North America, our chargers come equipped with native NACS connectors, ensuring compatibility with Tesla and other manufacturers adopting this port.
• CCS1: Primarily used in North America and South Korea, our systems provide high-current liquid-cooled CCS1 solutions for existing regional infrastructure.
• GBT: For the massive Chinese market and export projects to Southeast Asia, we offer high-power GBT liquid-cooled solutions that comply with the latest 2015+ standards.

By supporting all major protocols, MIDA ensures that your charging infrastructure can serve every EV on the road today and in the future.

Installation and Civil Engineering Requirements

Deploying a 400kW charging station requires careful planning. Due to the high power draw, a dedicated transformer or a high-capacity connection to the local grid is necessary. MIDA’s engineering team provides detailed foundation drawings and electrical schematics to assist with site preparation.

The cabinet itself is designed for ease of installation, with bottom-entry cable glands and large service doors for easy access to the AC input terminals. We also offer integrated battery storage solutions (BESS) for sites where the grid is constrained, allowing the station to deliver 400kW by buffering energy during off-peak hours.

Future-Proofing with V2G and MCS

Looking ahead, MIDA is already integrating V2G (Vehicle-to-Grid) capabilities into our high-power platforms. Bi-directional power flow will allow EVs to act as distributed energy resources, supporting the grid during peak demand. Furthermore, we are tracking the development of MCS (Megawatt Charging System) for heavy-duty electric trucks, and our liquid-cooled architecture is the foundation for future MW-level upgrades.

By choosing MIDA’s 400kW Liquid-Cooled DC Charging Pile, you are investing in a platform that is not only the leader in today’s market but also ready for the technological shifts of the next decade.