PTC Heater HVCH 25KW30KW35KW 600V800V1100V 12KG Bus Truck Construction Machinery BTMS RBS Battery Heating Cabin Heating EVLINK

Are You Facing These Thermal Management Challenges?

Vibration Testing

EVLINK has successfully completed comprehensive water circulation and power-on performance testing for its Q Series PTC Coolant Heaters at the laboratory facilities of Shanghai University of Engineering Science (SUES).

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.

QA01-Series (15-25kW)DC High Voltage Water Coolant Heater With Stepless Regulable Performance As Needed

1. It is compact and lightweight, allowing for easy installation in limited space while maintaining optimal heating performance.
2. The PTC Cabin Heater is designed to deliver fast heat-up times, quickly warming up the cabin to provide immediate comfort in cold weather conditions.
3. It offers energy efficiency, minimizing power consumption and maximizing the efficiency of the vehicle's heating system.

HVCH QA01 Series is an interior heater for heating water circuits in big vehicles , it could stepless regulate performance as needed.

HVCH QA01-Series could quickly, consistently,powerfully and reliably heat the vehicle interior. The compact device ensures a constantly high heat output of 15kW-25kW and allows for flexible use in a power range of 600 to 875 Volts. HVCH QA01-Series features infinitely variable heat output control by means of an integral control unit. This takes place either by regulating the water outlet temperature or by limiting the maximum heat output or power consumption. Furthermore, it is CAN-capable and transmits key operating data to the vehicle system using an intelligent diagnostic function.

Specification:

Product Features:

Ø Excellent Water Resistance.

During the actual operation, muddy roads and wet rainy days and long playing in high temperature, all require our high voltage coolant heater excellent waterproof performance.IP 67 Water and dust proof reports can be provided.

Ø Stepless Regulate Performance.

This takes place either by regulating the water outlet temperature or by limiting the maximum heat output or power consumption.Our High Voltage coolant heater has been equipted in thousands of vehicles for three years ,the good quality has been accecpted by the custmers.

Ø Reliable Dual Self-Protection System

Dual protection system includes mechanical protection device and electronic protection, which acts to shut the module down in reaction to a short circuit, overload, or over-temperature condition. In addition, We add the high voltage relay and current fuse in the high voltage circuit.

Ø Completely Separation of Water and Electricity

Water and electricity is completely separated.Different from other manufacturers,we solve perfectly the contradiction between the heat transmission efficiency with the Insulation requirement of DC 3500 V.Benefits from this technical improvement, our 870V (nominal voltage) products have been mass produced and used in heavy dump trucks in 2021.

Ø PTC thermistor heater with self - controlled constant temperature.

PTC water coolant heater come with all advantages of the PTC heating technology. Thanks to the PTC effect, the heating elements dynamically adjust their power without exceeding a maximum temperature. High operational reliability and energy efficiency without any additional switching elements.

Application:

To guarantee a safe journey even in challenging climate conditions, vehicles must be ready for operation right from the start.

Sufficient power of 15 to 25kw can meet the heating, defrosting, battery heating and other needs of large vehicles. Users can adjust the power according to the demand, control the power consumption. We also provide customized service, which can be adjusted according to customer requirements, such as voltage, power, etc

Our service:

1. We can supply you directly, save the agent fees and reduce your cost;
2. Big order comes with big discount, trial orders are also welcome;
3. Reply your enquiry within 24 hours;
4. Price advantages:reasonable and competitive;
5. We are manufacturer and possess strong strength;
6. Do our utmost to meet your demands.

Competitive Advantage:

1. Safety and reliability
2. OEM for your design
3. Stable performance
4. Water-proof, excellent insulating property

5. Excellent dry burning resistance
6. High Voltage,High Power,High Intelligence,High Reliability

15-25kW coolant water heater

High Voltage Coolant Water Heater

high voltage water coolant heater

PTC Heater HVCH 25KW30KW35KW 600V800V1100V 12KG Bus Truck Construction Machinery BTMS RBS Battery Heating Cabin Heating EVLINK Images