EVLINK 20kw 800v 600v Hvc Automotive Electric Heater For New Energy Cars

Are You Facing These Thermal Management Challenges?

Applications

EVLINK Technology’s high-voltage PTC water heater is widely used in electric buses, electric heavy-duty trucks,  electric light trucks, mining trucks, and energy storage thermal management systems. 

About Us

Evlink was founded in 2020, specializing in the R&D and manufacturing of automotive-grade high-voltage,  high-power coolant heaters. Our core team brings over 10 years of experience in the electric vehicle components industry.

In 2025, the company achieved an annual revenue of nearly RMB 200 million, with a workforce of 400 employees,  including 80 R&D engineers.

Our core business focuses on electric heating solutions for thermal management systems in commercial vehicles.  We offer high-voltage coolant heaters with a voltage range of 600V–1100V and power output from 3kW to 35kW.  Our mass-produced models reach a maximum rated voltage of DC 870V and a maximum rated power of 35kW,  placing our technical performance at the forefront of the industry.

Our Team

The company operates a modern production base covering 18,000 square meters,  equipped with advanced manufacturing facilities and a  professional management team.

With 16 years of industry experience, we have established a senior R&D team of over 80 experts,  specializing in hardware, software, and system integration.

18000m²   |    80+          |    65+           |     30+

Factory Area                         R&D Engineers                   Export Countries                    Production Lines

Certifications & Patents

Our patented technologies reflect our continuous innovation in high-voltage PTC heating systems,  ensuring efficiency, safety, and long-term reliability.

Production Process

Backed by a professional R&D team and extensive project experience,  we provide customized development and system integration services for high-voltage liquid heaters based on  customers’ actual operating conditions, achieving optimized thermal management performance and better vehicle compatibility.

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. Options include:

· Power and voltage customization

· Connector types

· Communication protocols (CAN, etc.)

· Appearance and mounting structure

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

With the development of new energy electric vehicles and hydrogen fuel cells, the demand for automotive thermal management systems is increasing. EVLINK has extensive technical and production experience in this field, especially in the design, research, and manufacturing of high-voltage platform liquid heaters and air heaters. The innovative features and advantages of EVLINK's automotive water heaters represent a new revolution in high-power heaters for electric vehicles.

High Voltage and High Power Design

Maximum Power and Voltage

• Maximum Power: 35kW, sufficient to meet the heating needs of most cold areas.
• Maximum Rated Voltage: DC 1050V, the future trend.

Market Recognition

Customers and Collaborations

• 70% of Chinese bus manufacturers choose EVLINK's products.
• HVCH-Q heaters were installed on hydrogen fuel buses during the Beijing Winter Olympics.
• Collaborations with well-known companies such as King Long, CATL, Geely, BYD, and Air International to provide vehicle thermal management systems.

Innovations

PTC Modular Design

• Unique modular design to address the demand for higher power, which traditional heaters cannot meet.
• Custom-made PTC elements with Curie temperature points to ensure good voltage resistance and low-temperature starting performance.

Matrix Arrangement Structure

• 3-row matrix arrangement to improve heat dissipation efficiency.
• High-quality alumina ceramic substrates used as insulation materials, solving the issues of traditional polyimide films being prone to scratches and reduced insulation performance at high temperatures

Copper Busbar Connection

• Using copper busbars to connect modules, avoiding the messiness and potential short circuits or leakage associated with traditional wiring.

Safety Precautions

Surge Current Management

• Using PTC chips with good low-temperature starting performance to smooth the current curve and reduce surge current.
• Staggered starting to lower the overall current.

Transient Overvoltage Protection

• High-voltage power supply filter capacitors and overvoltage protection devices.
• Choosing 1600V IGBTs to increase breakdown voltage.

High-Temperature Risk Control

• Combining mechanical temperature control switches with glass-sealed NTC thermistors to ensure safety under high temperatures.

Waterproof Structure

• Using silicone parts combined with stainless steel plates to ensure waterproof performance at inlet and outlet pipes.
• Optimized mounting feet design to enhance resistance to bumps and impacts.

Control Logic

Soft Starting

• Grouped starting, each group controlled by independent IGBTs, to achieve smooth startup.

PID Regulation

• Collaborating with customers to debug PID adjustments and optimize energy-saving strategies.

Switching Without Load

Combining contactors with IGBTs to reduce the impact on contactors during switching, preventing adhesion.

Conclusion

Through innovative PTC modular design, reliable safety precautions, and precise control logic, EVLINK's automotive water heaters offer efficient and reliable heating solutions. These innovations not only enhance product performance but also further solidify EVLINK's leading position in the automotive thermal management field.