Innovations in EVLINK High Voltage Coolant Heaters

Overview

As global environmental policies tighten and new energy technologies advance rapidly, 600V-rated electric buses are gaining prominence in the commercial market. Compared to traditional diesel buses, electric buses offer significant advantages in both environmental protection and economic efficiency.

The main advantages of electric buses are:

• Environmental Benefits: Electric buses greatly reduce exhaust emissions, improving air quality. This is especially important in cities that frequently experience heavy pollution, making the promotion of electric buses crucial.
• Economic Benefits: Although the initial purchase cost of electric buses is higher, their operating costs are lower. Over the long term, the total cost of ownership is significantly lower than that of diesel buses.

EVLINK's 600V PTC electric heaters play a crucial role in electric buses. These heaters can quickly raise the cabin temperature of the bus, even in extremely cold environments, ensuring the normal operation of electric buses.

Design and Technological Advantages

High Voltage and High Power Design

• Power and Voltage: The maximum power is 20kW, meeting the heating needs of cold regions. The maximum rated voltage is 600V-DC 1050V, suitable for special voltage conditions.

Innovations

PTC Modular Design

• Unique modular insulated ceramic 20kW heater design ensures stable and safe operation of high-voltage PTC heaters.
• Custom heating cores maintain stable start-up performance even in -40°C low-temperature environments.

Matrix Arrangement Structure

• The 600V electric vehicle heater features internal relays and fuses, with IGBT independent cooling, significantly improving heat dissipation efficiency.
• The 600V commercial vehicle heater uses high-quality alumina ceramic substrates as insulation materials, solving the issues of traditional polyimide films being prone to scratches and reduced insulation performance. A 5-year warranty is provided.

Copper Busbar Connection

• Modular copper busbar connections simplify the internal structure of the heater, solving the issues of short circuits or leakage common in traditional HVCH heaters.

600V High Voltage Coolant Heater

• Specifically designed for high voltage systems (600V~800V) in electric vehicles, capable of quickly heating coolant to improve heating efficiency.
• Essential for maintaining optimal battery temperatures and extending the lifespan of electric vehicle components. The current TMS is gradually shifting from air cooling to liquid cooling solutions.

Commercial Vehicle Heaters

• Specifically designed for commercial vehicles, providing reliable performance under various operating conditions.
• Advanced high-voltage PTC technology ensures rapid heating and stable temperature control.

Safety and Control

Safety Precautions

• Surge Current Management: Using PTC chips with excellent low-temperature start-up performance to smooth the current curve and ensure steady rise without adversely affecting other vehicle components.
• High-Temperature Risk Control: EVLINK's 600V high voltage water heaters are equipped with a thermostat protection device and a temperature sensor to ensure safety under high-temperature conditions.

Control Logic

• Soft Start: Grouped start-up with independent IGBT control, using special step-by-step start-up logic to achieve smooth start-up.
• PID Regulation: Collaborating with customers to optimize PID regulation based on temperature, ensuring energy-saving strategies and battery health.
• No-Load Switching: Combining contactors with IGBTs to minimize impact on contactors during switching, preventing adhesion.

Product Description and Specifications

EVLINK's PTC coolant heaters use electricity to heat the coolant, providing thermal energy for vehicles. They are widely used in electric and hybrid vehicles for heating passenger cabins, defrosting and dehumidifying windows, or activating battery thermal management systems (TMS) to replace batteries, meeting regulatory and functional requirements.

Specifications

Conclusion

Through innovative PTC modular design, reliable safety precautions, and precise control logic, EVLINK provides efficient and reliable heating solutions. These innovations not only enhance product performance but also solidify EVLINK's leading position in the automotive thermal management field. By integrating high voltage coolant heaters and commercial vehicle heaters, EVLINK ensures comprehensive thermal management solutions for modern electric vehicles.