High Voltage PTC Coolant Heater HVCH 2KW 5KW 7KW 8KW 200V-800V for Electric Bus, Truck, Construction Machinery, BTMS and Cabin Heating

Are You Facing These Thermal Management Challenges?

Choose EVLINK !

Leveraging our experienced R&D team and extensive project expertise, we provide customized development and system matching services for high-voltage coolant   heaters based on specific operating conditions, delivering safer, more efficient, and more reliable high-voltage PTC liquid heating solutions to ensure optimized   thermal management performance and seamless vehicle integration.

High Voltage Coolant Heater——A Series

6-18 kW | 400–800 V | CAN | IP67

Product Features

The EVLINK A-series is an innovative direct-heating electric heater that offers significant advantages over PTC heaters from other brands. Thanks to EVLINK's structural innovations, the A-series delivers a power output of up to 18 kW, efficiently covering the 10 kW to 18 kW range. Its compact size—significantly smaller than other products of equivalent power—provides vehicle layout and thermal management engineers with great flexibility when positioning the PTC heat source. This heater is expected to become a mainstream choice for cabin temperature control in passenger vehicles.

• It enables efficient heat transfer and distribution, ensuring uniform heating and a continuous supply of hot water.
• This high-pressure water heater is compatible with various high-pressure systems and is suitable for applications such as industrial operations and power generation facilities.

Applications

The A-Series is widely used in buses and other large vehicles. It consistently creates a comfortable interior environment for passengers, regardless of whether the season is cold or warm. Furthermore, thanks to its compact size and high-performance capabilities, it is the preferred choice for structural engineers when positioning heat sources.

Electric  Trucks                                                                          Electric Buses                                                                               Electric Construction Equipment

About us

EVLINK provides High Voltage Coolant Heaters, Air Heaters, BTMS, and intelligent thermal controllers for electric vehicles, industrial equipment, energy storage, and data center cooling.

With our Open Thermal Management Platform, professional R&D team, CNAS-certified laboratory, and OEM/ODM capabilities, we deliver customized thermal management solutions from component development to complete system integration.

      18000m²     |     100+         |     65+            |      30+

             Factory Area                                     R&D Engineers                             Export Countries                                Production Lines

♦ Our Servies

• Holistic Consultation Process: A service designed to understand and fulfill unique customer requirements fully.
• Swift Response Framework: A mechanism that promises uninterrupted and efficient service delivery.
• Global Support Network: A promise to make every EVLINK user feel valued, backed by a global support structure.

♦ Competitive Advantages 

♦ FAQ 

• Q: How to choose the right PTC water heater?

• A: Please provide the following parameters to help with selection:

  · Application scenario (bus / heavy-duty truck)

  · Intended use (battery heating, cabin heating, regenerative braking energy recovery)

  · Operating conditions

  · Operating voltage range

  · Rated voltage and power

  · Battery type and capacity

  · Target outlet water temperature

  · Ambient operating temperature

  · Coolant flow rate

  · Installation space

• 
  

  Q: How does a PTC water heater work?

• A: The PTC heater works by passing electric current through PTC ceramic material. The material’s resistance increases as temperature rises, automatically adjusting the heating power to maintain a constant temperature.

• Q: Which vehicle types is it suitable for?

• A: Suitable for most electric buses, electric trucks, and electric construction machinery (excavators, loaders, etc.).

• Q: How does it perform in low-temperature environments?

• A: PTC heaters remain stable in low-temperature conditions, making them ideal for electric vehicles in cold regions.

• Q:  What are the core advantages of EVLINK PTC water heaters?

• A:High reliability, fast and uniform heating, patented thermal expansion control, moisture protection, and exceptional performance under extreme conditions.

• Q:   Is customized development supported?

• A:  Yes.Common customization options include

  · Power rating (3 kW – 35 kW)

  · Voltage platform (400 V – 800 V)

  · Communication protocol (CAN / EN enable)

  · Mounting bracket design and dimensions

  · High-voltage and low-voltage connectors

  
  

• Q:    Is OEM/ODM customization available?

• A:  Yes.Common customization options include

  · Power rating (3 kW – 35 kW)

  · Voltage platform (400 V – 800 V)

  · Communication protocol (CAN / EN enable)

  · Mounting bracket design and dimensions

  · High-voltage and low-voltage connectors

• Q: What is the lead time?

• A:Minimum order quantity: 1 unit. Sample delivery within 7 days. Agile development ensures rapid response to changing requirements.  

• Q: Are certifications available?

• A:The product meets automotive-grade standards and can provide certifications such as CE, ISO, and E-Mark.

• Q: Are sample tests supported?

• A:Yes. Samples can be provided for performance verification and vehicle integration testing.

• Q:  Does it support full vehicle system integration?

• A:Yes. Integration with the vehicle control system is possible via CAN communication.

Introduction

In the face of global warming and environmental pollution challenges, nations have agreed to reduce carbon emissions and achieve carbon neutrality. The promotion and application of commercial electric vehicles (EVs) are crucial for reaching this goal. Large lithium batteries, as the power source for commercial EVs, play a decisive role in the vehicle's performance, driving range, and lifespan. Due to their high energy/power density, long cycle life, high stability, and high efficiency, lithium batteries have become the most promising candidates to drive the development of EVs.

However, lithium batteries are highly sensitive to operating temperatures. At low temperatures (<15°C), increased internal resistance and decreased reaction kinetics significantly reduce discharge capacity, shortening driving range. Subzero temperatures can even trigger lithium dendrite growth during charging, leading to internal short circuits. Uneven battery temperature distribution also causes inconsistent electrochemical processes, further reducing battery pack capacity and cycle life. Therefore, a battery thermal management system (BTMS) with liquid cooling and heating solutions is crucial for ensuring the safety and performance of lithium-ion batteries in EVs.

EVLINK's PTC High-Voltage Liquid Heater

Over the past decades, EVLINK has developed various PTC liquid heaters for commercial EVs, actively heating large lithium batteries through coolant. EVLINK's 20kW, 25kW, and 30kW heaters are specifically designed for various types of commercial vehicle BTMS. BTMS integrators select EVLINK's PTC high-voltage liquid heaters to transfer information about preheating strategies to the heaters, such as requiring the PTC heater to provide 24kW of power and adaptively adjust once a certain coolant temperature is reached. EVLINK's PTC high-voltage liquid heaters can develop corresponding strategies based on customer-provided information, ensuring efficient and safe battery preheating.

Advantages of PTC Liquid Heaters

• High Power and Voltage: EVLINK heaters operate at high voltages up to 1100V, providing up to 35kW of heating power, suitable for large-scale commercial EVs.
• Efficient Preheating: Utilizing efficient PTC elements, EVLINK heaters can quickly heat the coolant to the desired temperature, rapidly raising battery temperature in low-temperature environments to ensure normal EV operation.
• Intelligent Adjustment: The heaters feature adaptive adjustment capabilities, adjusting heating power in real-time based on feedback from BTMS, optimizing energy consumption, and improving overall system efficiency.
• Safety and Reliability: PTC materials have self-regulating properties; when the temperature reaches the set value, resistance significantly increases, automatically limiting current to ensure heater and battery safety.

Design Considerations for BTMS

BTMS design must consider various factors depending on the battery integration level. Specific designs should include battery preheating strategies, heat transfer paths and media selection, and battery pack geometry and layout. For external heating systems, optimizing heat transfer fluid and flow channel geometry is key to improving heating efficiency. Internal heating systems require efficient heat generation within the battery to achieve effective preheating.

Future Trends and Challenges

As EV adoption and technology advance, EVLINK remains committed to developing more efficient and reliable PTC liquid heaters, providing optimal battery thermal management solutions for commercial EVs. Future research will focus on further enhancing heating efficiency, optimizing BTMS design, and developing new materials and technologies to meet more stringent environmental conditions and power demands.

Conclusion

The promotion of EVs not only reduces pollution and emissions but also lessens dependence on oil. Lithium batteries' sensitivity to operating temperatures makes a thermal management system essential for ensuring high performance, long cycle life, and safe operation. EVLINK's PTC high-voltage liquid heaters, with their high power, high voltage, and intelligent adjustment features, are the ideal choice for commercial EV battery thermal management. In the future, EVLINK will continue to drive the development and application of EV technology.

EVLINK is dedicated to providing the highest quality PTC liquid heater solutions for commercial EVs, helping achieve green travel and sustainable development goals. If you have any questions or needs regarding our products, please feel free to contact us.