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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
8KW PTC Technology 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.8KW PTC technology heater is specially designed for electric vehicles and has the advantages of fast heating and environmental protection.
Description
8KW PTC Technology Heater
Products Description
Necessary conditions for heater:
- The heater is controlled by CAN communication
- High voltage power supply
- Low voltage power supply (BATT) or Kl15 (ignition switch voltage), Kl31 (GND)
- The heater needs to set a high voltage interlock circuit
- The whole vehicle must have an insulation monitoring device to monitor:
o Over (under) voltage protection
o Short circuit protection (fuse in the distribution box)
o Leakage protection
o Interlock response
- The high voltage electric heater must be equipped with a 40A fuse
- It must be ensured that the high voltage power supply has no reverse polarity
- The whole vehicle needs to be powered off when overvoltage occurs
- The high voltage input should be pre-charged
- The high voltage input should be equipped with a relay. When a serious fault occurs, the high voltage can be cut off without affecting the safety of the whole vehicle
Products Parameter
| Power | 8KW±10%(600VDC, T_In=60℃±5℃, flow=10L/min±0.5L/min) |
| Flow resistance | 4.6 ( Refrigerant T = 25 ℃, flow rate = 10L/min) KPa |
| Burst pressure | 0.6 MPa |
| Storage temperature | -40~105 ℃ |
| Use ambient temperature | -40~105 ℃ |
| Voltage range (high voltage) | 600V (450~750V) / 350V (250~450V) optional |
| Voltage range (low voltage) | 12V(9~16V) / 24V (16~32V) optional |
| Relative humidity | 5~95% |
| Supply current | 0~14.5 A |
| Inrush current | ≤25 A |
| Dark current | ≤0.1 mA |
| Insulation withstand voltage | 3500VDC/5mA/60s, no breakdown, flashover and other phenomena |
| Insulation resistance | 1000VDC/200MΩ/5s |
| Weight | ≤3.3 Kg |
| Discharge time | 5s (60V) |
| IP protection (PTC assembly) | IP67 |
| Heater air tightness Applied voltage | 0.4MPa, test 3min, leakage less than 500Par |
| Communication | CAN2.0 / Lin2.1 |
Power-on check
Only high voltage can be operated without limiting the performance of the heater.
After turning on or resetting the heater, the heater waits for a power request on the CAN bus. Once a valid power request is received, the power-on check starts.
First, the total current is checked when all heating circuits of the heater are not activated. If it exceeds a predetermined value, the heater is not working at this time, so this fault indicates a short circuit, leakage current or open circuit fault.
Products Details
1. High-efficiency heating, rapid response in low-temperature environments
Utilizing PTC ceramic positive temperature coefficient technology, with a rated power of 8kW, it heats up instantly upon power-on, requiring no preheating. Even in low-temperature environments (-40℃), it can quickly and stably output heat, making it suitable for core scenarios such as electric vehicle battery preheating, cabin heating, defrosting, and defogging. Its thermal efficiency is far higher than traditional resistance heating, saving over 30% in energy.
2. Safe and reliable, multiple protections eliminate hidden dangers
Self-limiting temperature to prevent dry burning: The PTC element automatically increases resistance and reduces power when the temperature exceeds the limit, eliminating the risks of overheating, dry burning, and open flame.
High-voltage safety architecture: Supports a wide voltage range of 450–750VDC, standardly equipped with a 40A fuse, high-voltage interlock, insulation monitoring (withstand voltage 3500VDC/60s), leakage/short circuit/reverse connection protection, complying with vehicle high-voltage safety regulations.
Industrial-grade protection: PTC components are IP67 dustproof and waterproof; the entire unit operates in a wide temperature range of -40℃ to 105℃, and has passed military-grade reliability verification.
3. Intelligent and controllable, compatible with vehicle thermal management
Precise temperature control: PID algorithm for stepless power adjustment (20%–100%), temperature control accuracy ±1℃, supports CAN2.0/Lin2.1 bus communication, seamlessly integrating with the vehicle's VCU.
Low power consumption design: Standby dark current ≤0.1mA, 5-second rapid discharge at 60V, reducing static energy consumption and extending battery life.
4. Compact and lightweight, easy to install and highly adaptable
Small and high-energy: Weighing ≤3.3kg, compact size, flow resistance only 4.6kPa, suitable for the space layout of various electric/hybrid vehicles.
High adaptability: Multiple voltage options are available, including high voltage 600V/350V and low voltage 12V/24V. Plug and play, supporting rapid integration and after-sales maintenance.
Products Installation
Products Application
1. New Energy Vehicle Cabin Heating: Provides winter heating for pure electric and hybrid buses and commercial vehicles, rapidly raising the temperature for defrosting and defogging, enhancing passenger comfort.
2. Low-Temperature Preheating and Insulation of Power Batteries: Preheats battery packs in frigid environments, improving charging efficiency and discharge performance, and extending lithium battery life.
3. Thermal Management of the Vehicle's Three-Electric System: Maintains constant temperature control for the circulating water circuits of the motor, electronic control unit, and reducer, ensuring stable operation of the power system at low temperatures.
4. Heating for Engineering and Special Vehicles: Provides water circuit heating and equipment temperature control for special vehicles such as sanitation vehicles, logistics trucks, RVs, and construction machinery.
Products Certification
Our Company
FAQ
Q: What DC high voltage does this heater support?
A: It supports 350V-750VDC wide voltage input, compatible with most new energy vehicles, and fits 12V/24V low voltage control system.
Q: Can it work well in extremely cold environment?
A: It can run stably at -40℃ with fast heating response, perfect for harsh cold working conditions.
Q: What safety protections are equipped?
A: It has over temperature, over current, short circuit, insulation and high voltage interlock protection. PTC self-limiting temperature design avoids dry burning, ensuring safe vehicle application.
Q: Does it support intelligent communication control?
A: Yes, it supports CAN bus communication, which can connect with vehicle controller to realize automatic start-stop, power adjustment and precise temperature control.
Q: What fields can this heater be used in?
A: It is widely used for electric buses, new energy trucks, sanitation vehicles, RVs, construction machinery and other new energy vehicle thermal management systems.
Q: Is it easy to install and maintain?
A: Featuring compact size and standard interfaces, it is easy to install. It owns low failure rate and needs simple daily maintenance.
Q: What about its heating performance and energy saving effect?
A: Adopting advanced PTC heating technology, it features high thermal efficiency, stable heat output and effectively reduces overall vehicle energy consumption.
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