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Hebei Nanfeng Automobile Equipment (Group) Co.,Ltd
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Tel: +86 010 58673556
Candy Jiao
E-mail: nh.jiao@auto-parkingheater.com
Email: nh.li@auto-parkingheater.com
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600v Thick Film Heating Element For EV
NF Group is the largest electric heater manufacturer in China. Now we have launched a new product: a 7-15 kW thick film electric heater, which has been supplied in batches. This product has the advantages of ultra-high thermal efficiency, strong pressure resistance, ultra-long life, ultra-safety, and simple structure.
Description
600V Thick film heating element for EV
Products Description
Key performance features include:
Compact structure, high power density, and flexible fit within the vehicle's installation space.
Redundant sealing design enhances system reliability.
| OE NO. | HVCH-Q8 |
| Rated power | 8KW(OEM 7KW~15KW) |
| Rated Voltage | DC600V(OEM 350V~890V) |
| Voltage Range | DC450V~DC750V |
| Control Low Voltage | 9V~32V |
| Control Signal | CAN |
| Over dimension (L* W* H) | 277.5mmx198mmx54mm |
| Inlet and Outlet Water Joint Dimension |
Ø25mm |
Products Design
A TVS is installed at the low-voltage power supply input to effectively prevent surges. A high-frequency isolation transformer provides auxiliary power to the high-voltage side. Digital isolators communicate between the high- and low-voltage control units. The input auxiliary power supply includes current limiting protection. Temperature sensors NCT_A and NTC_B, located at the water inlet and outlet, respectively, monitor coolant temperature in real time, providing timely protection when temperatures exceed these limits.
Products application
Products advantage
Thick Film Heating Advantages
·Simple film structure, lightweight, low heating unit temperature, and high heat transfer efficiency;
·Constant electrical resistance, low thermal resistance, and reliable insulation;
·Precise power control with no inrush current;
·High power per unit weight and per unit volume;
Products certification
Products FAQ
Q1: What is the core difference between thick-film heaters and traditional PTC heaters?
Principal Difference: Thick-film technology uses screen-printed rare earth slurry to form micron-scale circuits on a substrate (ceramic/stainless steel), achieving an electrothermal conversion efficiency of >95%. PTC technology relies on the ceramic material to self-limit its temperature, resulting in an efficiency of only 70-80%.
Response Speed: Thick-film heaters activate in just 30 milliseconds, 1,000 times faster than PTC heaters (>28 seconds), reducing battery warm-up time to 5 minutes in low-temperature environments.
Q2: What is the energy efficiency ratio (COP)? How does it affect battery life in winter?
The COP can reach over 0.95, saving 20-30% more energy than PTC heaters. After activation at -20°C, battery life loss is reduced to 8-10% (compared to 25-30% for PTC heaters).
Q3: Is it compatible with 800V high-voltage platforms? What is its insulation safety?
It supports 400-800V architectures, has an insulation withstand voltage of >3kV, and passes the LV 124 electrical safety standard, eliminating the risk of breakdown.
Q4: Can the IP rating (ingress protection) withstand harsh environments?
It comes standard with IP67/IP6K9K (dustproof/waterproof), a salt spray test rating of >480 hours, and is suitable for snowmelt and high-humidity coastal environments.
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