How High-Power Charging Connectors Support Electric Truck Operations

The growing use of electric trucks in logistics, freight transportation, ports, and industrial operations is creating new requirements for commercial vehicle charging infrastructure. Compared with passenger electric vehicles, electric trucks often operate with higher energy demands and tighter schedules. Charging equipment must therefore provide reliable power transfer while supporting frequent use and demanding working conditions.

High-power charging connectors are an important part of this process. They connect the charging station to the vehicle and help enable high-current DC charging. For fleet operators, charging equipment manufacturers, and infrastructure developers, selecting the right connector is essential for building an efficient and dependable charging system.

Zhangjiagang UCHEN New Energy Technology Co., Ltd., also known as Youcheng Technology (stock code: 873087), is a China-based charging solution service provider focused on the development and market promotion of high-performance charging products for new energy vehicles. Through its DUOSIDA brand, the company offers charging products for different vehicle interfaces and charging applications.

Why High-Power Charging Connectors Matter for Electric Trucks

Electric trucks are used in a wide range of commercial applications, including:

Long-distance and regional freight transportation
Logistics distribution and warehouse operations
Port and terminal transportation
Construction and industrial material handling
Commercial fleet transportation

In these applications, vehicles may need to recharge within limited time windows. A truck returning to a depot between shifts, for example, may need to complete charging before its next scheduled departure.

High-power charging connectors support charging systems designed for higher current levels. When matched with the vehicle battery, charging station, and electrical infrastructure, they can help reduce charging time and improve vehicle availability.

However, the connector is only one part of the charging system. Actual charging power depends on the voltage and current supported by the vehicle, charger, connector, and battery management system.

High Current Capacity for Commercial Charging Applications

Current rating is a key specification when evaluating HPC connectors for electric truck charging.

For DC charging, power can be calculated using the following formula:

Power (kW) = Voltage (V) × Current (A) ÷ 1,000

At 1,000 V, for example, 400 A corresponds to 400 kW, while 600 A corresponds to 600 kW. These are theoretical calculations, not guaranteed charging outputs. The actual power level depends on the complete charging system.

For commercial charging projects, different current configurations may be required according to vehicle type, charging duration, and operating schedule. A connector with a suitable current rating can help equipment manufacturers design charging systems around specific application requirements.

Youcheng Technology provides HPC product options with different current ratings, giving charging equipment developers technical choices for high-power DC charging projects.

DUOSIDA HPC Connector Product Options

1. HPC Products Rated at 400A, 500A, 600A, and 800A Constant Current

The DUOSIDA HPC product rated at 400A, 500A, 600A, and 800A constant current is designed for high-current DC charging applications. The product page identifies it as a fifth-generation UCHEN DC charging connector with liquid cooling.

Its published specifications include:

Rated current options: 400A, 500A, 600A, and 800A constant current
Rated voltage: 1500V DC
Plug head standard: GB/T 20234.3
Internal protection rating: IP67
Coupled protection rating: IP55
Mechanical lifespan: More than 10,000 no-load insertion and withdrawal cycles
Operating temperature: -30°C to +50°C
Impact resistance: 1-meter drop and 2-ton run-over test

The product also features a motorized electronic lock with manual unlocking capability.

For charging equipment manufacturers working on GB/T-compatible high-power charging systems, these specifications provide a basis for evaluating connector suitability. The final configuration should be confirmed according to vehicle inlet compatibility, charging station output, cable design, and system requirements.

2. HPC Products Rated at 600A Maximum Constant Current

Another option is the DUOSIDA HPC product rated at 600A maximum constant current, which is listed as compatible with the North American Charging Standard SAE J3400-2023 requirements.

The product specifications include:

Maximum rated current: 600A constant current
Operating voltage: 1000V
Internal protection rating: IP67
Mechanical lifespan: More than 10,000 no-load insertion and withdrawal cycles
Coupled insertion force: No more than 100N
Operating temperature: -30°C to +50°C
Terminal temperature rise: Below 50K
Housing material: Thermoplastic with UL94 V-0 flame-retardant grade

The product page also provides cooling-related specifications, including cooling media options and maximum coolant temperature.

This connector is suitable for evaluation in charging projects using the corresponding vehicle interface and system architecture. Buyers should confirm the exact model and technical requirements before procurement.

Liquid Cooling for High-Power Charging

As charging current increases, heat generated by electrical resistance becomes an important engineering consideration. Contact temperature, cable heating, and cooling performance can influence the stability of high-power charging.

Liquid-cooled HPC connectors are designed to help manage heat during high-current operation. The cooling system works alongside the connector’s conductive components and thermal design to maintain operating temperatures within specified limits.

For electric truck charging projects, buyers and engineering teams should review:

Required charging current and duration
Cooling medium and circulation design
Coolant temperature and flow requirements
Ambient temperature at the installation site
Temperature monitoring and charging control
Maintenance requirements for the cooling circuit

The DUOSIDA HPC product range includes liquid-cooled connector configurations. Their specifications can be used as a reference when charging equipment manufacturers evaluate thermal management requirements.

A suitable cooling system must be designed and validated as part of the complete charging equipment. Liquid cooling alone does not guarantee a specific charging speed.

Mechanical Durability for Frequent Fleet Use

Commercial charging connectors may be connected and disconnected many times during daily operations. At logistics depots, ports, and industrial sites, equipment can also be exposed to cable handling, accidental impact, dust, and moisture.

Mechanical durability is therefore an important factor in connector selection.

The DUOSIDA HPC product specifications include a mechanical lifespan exceeding 10,000 no-load insertion and withdrawal cycles. This provides a useful reference for charging equipment manufacturers and fleet infrastructure developers assessing repeated-use applications.

Other factors should also be considered:

Protection performance: Check the stated IP rating and whether it applies to the unmated or coupled condition.

Connector handling: Grip design, cable flexibility, insertion force, and locking mechanisms can influence daily usability.

Environmental suitability: Confirm that the connector’s operating temperature and protection specifications match the installation environment.

Maintenance: Follow the product manufacturer’s inspection and maintenance recommendations to support long-term operation.

These details are particularly relevant for charging stations shared by multiple drivers and vehicles.

What Buyers Should Consider When Selecting an HPC Connector

For charging equipment manufacturers, fleet operators, and EV infrastructure project developers, choosing an HPC connector involves more than comparing current ratings.

Charging Standard and Vehicle Compatibility

The connector must match the vehicle inlet and applicable charging standard. GB/T and SAE J3400-related products, for example, have different interface requirements. They should not be treated as interchangeable.

Voltage and Current Requirements

Confirm the vehicle’s operating voltage, charging station output, and required current. The connector rating should be appropriate for the system’s intended operating conditions.

Cooling System Compatibility

For liquid-cooled connectors, verify the cooling medium, temperature range, and other relevant requirements. The connector and charging station cooling design must work together.

Cable and Installation Requirements

Cable length, conductor sizing, routing, and connector handling should be reviewed during system integration. These factors can affect installation and user experience.

Technical Documentation

Before purchasing, request the specifications and documentation for the exact model. Product drawings, relevant test reports, and compatibility information can help engineering teams complete their evaluation.

Youcheng Technology: HPC Charging Product Supplier in China

For EV charging equipment manufacturers and commercial charging project developers, working with a supplier that offers dedicated charging products can support product evaluation and system integration.

Youcheng Technology focuses on high-performance charging products for new energy vehicles. Its DUOSIDA product portfolio includes:

HPC products
NACS charging products
Charging sockets and plugs
Vehicle outlet sockets
High-voltage connectors
EV charging stations
Charging adapters and related accessories

The availability of different product categories provides options for customers working on different charging interfaces and application requirements.

The company’s HPC product pages offer technical information on current ratings, operating voltage, protection performance, mechanical lifespan, and other model-specific characteristics. This information can support preliminary product selection and technical discussions.

For buyers, the next step is to identify the required charging standard, current rating, voltage range, and cooling arrangement, then confirm the appropriate product configuration with the supplier.

More information about DUOSIDA charging products is available at the official DUOSIDA EV website.

Conclusion

High-power charging connectors are important components in electric truck charging infrastructure. They support high-current power transfer, contribute to thermal management, and must withstand frequent use in commercial environments.

For fleet operators, connector selection should be based on charging schedules, vehicle compatibility, power availability, and operating conditions. For charging equipment manufacturers, product specifications, cooling requirements, and interface standards are essential considerations during system design.

Youcheng Technology provides DUOSIDA HPC connector options, including 400A, 500A, 600A, and 800A constant-current configurations as well as a 600A maximum constant-current product for a different charging interface. These products offer technical options for high-power charging applications.

By evaluating connector specifications alongside the complete charging system, buyers can make more informed decisions when developing charging solutions for electric truck operations.

www.duosidaev.com
Zhangjiagang UCHEN New Energy Technology Co., Ltd.