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Hebei Nanfeng Automobile Equipment (Group) Co.,Ltd
Phone: +86 18811334770
Tel: +86 0317 8620396
Tel: +86 010 58673556
Candy Jiao
E-mail: nh.jiao@auto-parkingheater.com
Email: nh.li@auto-parkingheater.com
Add: Room 505, Building B, Free Town Center, No.58, East Third Ring South Road, Chaoyang District, Beijing, 100022, P.R.China
High Quality High Voltage PTC Electric Heater
Hebei Nanfeng Group has been producing heaters for more than 30 years, and our company is the largest manufacturer of automobile heating and cooling equipment in China and the designated supplier of military vehicles in China.Key markets targeted include electric vehicles. battery thermal management and HVAC refrigeration units. At the same time, we also cooperate with Bosch, and our product quality and production line have been highly recoanized by Bosch.
Description
High-quality High Voltage PTC Electric Heater
Products Description
The advent of new energy vehicles like electric cars brings a problem of range deterioration caused by heating and air conditioning. Conventional cars utilize excess heat from the engine for such purposes. However, electric and new-energy vehicles do not have an engine or an adequate heat source. This is where PTC electric heaters come into the picture, and they can be used for water heating, battery heating, seat heating, and defrosting of rear-view mirrors.
In conclusion, the PTC electric heater is an innovative and safe solution for heating applications in new energy vehicles, and its high sensitivity and wide temperature range make it versatile for multiple purposes. Its long service life, small size, and ease of installation add to its appeal and reliability.
| Model | SR02-12 |
| Rated voltage (V) | 410V |
| Voltage range (V) |
250~490V |
| Rated power (W) |
7000W, Tmed=60℃; 10L/min |
| Controller low voltage (V) | 9-16V |
| Control signal |
LIN2.1 |
|
Storage temperature |
Ts-40℃~125℃ |
|
Coolant |
50 (water) + 50 (ethylene glycol) |
Product Structure:
The high-pressure coolant heater assembly has 4 φ4.45 mounting holes, which are provided for vehicle or bracket installation. The recommended installation torque is 5N±1; the φ19 standard water pipe is used, and the specifications are as shown below. The installation structure and quantitative data are shown in the 3D digital model and 2D drawings.
The high-pressure coolant heater assembly has 1 M6 stud for vehicle grounding wire connection. It is recommended to use an M6 nut to fix the grounding harness to the grounding screw. The recommended nut tightening torque is: ≤9Nm.
Products high voltage interlock
High-voltage interlock
The high voltage interlock signal is directly led out from the low voltage end, not uploaded through the bus, see the definition of the low voltage port.
When the high voltage connector is disconnected, the high voltage interlock line is disconnected before the high voltage power line. After the vehicle detects that the interlock line is disconnected, the high-voltage power will be cut off. This function effectively avoids the possibility of sparks and the risk of electric shock when the high-voltage connector is connected and disconnected.
Products Feature
Vehicle electrical requirements
A. Overvoltage protection: The vehicle needs to have an over-voltage and under-voltage power supply shutdown function
B. Short-circuit current: It is recommended to arrange a special fuse in the high-voltage circuit of the heater to protect the heater and related parts of the high-voltage circuit
C. The vehicle system needs to ensure a reliable insulation monitoring system and insulation fault handling mechanism.
D. High-voltage wiring harness interlocking function
E. Ensure that the positive and negative poles of the high-voltage power supply cannot be reversed
Vehicle installation environment requirements
A. The heater must be arranged according to the recommended requirements, and it must be ensured that the air inside the heater can be discharged with the water channel. If the heater is trapped inside, it may cause the heater to overheat, thereby activating software protection, and in severe cases, hardware damage may occur.
B. The heater is not allowed to be arranged at the highest position of the cooling system. It is recommended to place it at a relatively low position of the cooling system.
C. The working environment temperature of the heater is -40℃~120℃. It is not recommended to be installed in an environment without air circulation around the high heat source of the vehicle (hybrid vehicle engine, range extender, pure electric vehicle exhaust pipe, etc.).
D. The allowed layout requirements of the product in the vehicle are shown in the following figure:
Products application
How Does the Heater Support Battery Thermal Management in EVs?
✅ Battery Temperature Optimization: EV battery packs operate best between 20-40°C. A PTC water heater is essential for pre-conditioning batteries in cold climates, reducing charge time and improving range.
✅ Integration with Cooling Loops: The heater works in conjunction with electronic water pumps, ensuring uniform heat distribution to prevent localized overheating or cooling inefficiencies.
✅ Smart Thermal Cycling: Some systems allow the heater to cycle on/off based on battery demand, ensuring optimal energy use without unnecessary heat generation.
Products certification
FAQ
FAQ
Q: How Does the PTC Heater Maintain Stable and Efficient Heating?
A: 1.Self-Regulating Technology: Unlike traditional resistance heaters, PTC (Positive Temperature Coefficient) elements adjust power output automatically based on the surrounding temperature. This prevents overheating and improves efficiency without requiring external control circuits. 2.High Thermal Efficiency: PTC heating elements convert nearly 98% of electrical energy into heat, reducing energy waste and improving overall system performance in electric buses, trucks, and off-road EVs.
Q: How Does the Heater Perform in Extreme Cold Conditions (-30°C and Below)?
A: Cold Weather Optimization: Traditional heaters may suffer from power loss or slow heating in extreme cold, but PTC heaters maintain performance due to stable resistance characteristics. Fast Heat-up Time: The 20kW power output ensures rapid heating, which is crucial for electric vehicle thermal management, preventing battery degradation and keeping cabin temperatures comfortable. Battery Protection: In extreme cold, EV batteries suffer from reduced charge acceptance. The PTC water heater plays a key role in warming up the battery pack, improving charging efficiency and range in winter conditions.
Q: What Are the Key Differences Between PTC Water Heaters and Traditional Fuel-Based Heaters?
A: Zero Emissions & Energy Efficiency: Unlike diesel heaters, which burn fuel and produce emissions, PTC water heaters are fully electric and compatible with EV high-voltage systems (300V-800V DC). Lower Maintenance Costs: Fuel heaters require fuel refills, exhaust system cleaning, and mechanical servicing. PTC heaters, on the other hand, are solid-state devices with no moving parts, significantly reducing maintenance needs. Silent Operation: PTC heaters do not produce combustion noise, making them ideal for passenger buses, long-haul trucks, and premium EVs where noise reduction is a priority.
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