High Voltage Coolant Heater | Automotive
High Voltage Coolant Heater | Automotive
The world's smallest, lightest and most efficient Automotive High Voltage Fluid Heater for automotive thermal management, battery heating & interior heating.
Heating power up to 7 kW
Voltage range 195 - 450 V
Robust and field-tested wire heating technology
Patented fluid guidance
High energy efficiency of ~98%
High Voltage Coolant Heater | Gen 2.0 Automotive
The latest generation of DBK's high-voltage coolant heater is currently the smallest, lightest and most efficient automotive fluid heater in the world thanks to its patented fluid guidance system. Featuring proven and robust tubular heating technology, the heater is designed for long-term, maintenance-free operation in automotive applications. It can be used to heat coolant circuits of high-voltage batteries or for interior heating in electric or hybrid vehicles.
The high-voltage coolant heater consists of an electronic housing with 360° EMC shielding and a separate fluid chamber. It achieves a heating capacity of up to 7 kW and is based on robust tubular heating technology. The high-voltage heating system can be operated in a voltage range of 195 to 450 V DC and transports up to 14 liters of fluid per minute. Thanks to optimized fluid guidance and heating elements in direct contact with the medium, the heater achieves a very high efficiency and short heat-up times. Its energy efficiency of almost 98% in combination with the compact size and low weight lead to a significantly better energy balance of the vehicle.
Thanks to integrated sensors on the circuit board, an indirect temperature measurement at the coolant inlet and outlet is possible. Sensors in the fluid chamber were completely omitted to reduce leakage points. The heater is controlled via PWM and LIN 2.0 interface.
The installation and connection of the high-voltage coolant heater offers maximum flexibility: The special fluid guidance system allows for a wide range of installation positions. The up to four mounting brackets facilitate installation in the vehicle. A Hirschmann HPS40-2 Plus connector with improved protection against accidental contact (IPXXB+; no HV interlock necessary) is used for the high-voltage connection. The nozzle geometry for the fluid connection is suitable for hoses and spring band clamps according to DIN 3021-3.
The high-voltage coolant heater is validated according to LV124/VW80000 Automotive Standard.
FEATURES
Power up to 7 kW
Can be operated at a voltage range of 195 - 450 V DC
Robust and field-tested wire heating technology (tubular heating elements)
Heating elements in direct contact with medium (highest efficiency & short heating time)
High energy efficiency of ~98%, compact size, and low weight (approx. 1.2 kg) lead to better energy balance of the vehicle
Highly flexible installation position within the vehicle thanks to optimized fluid guidance
Indirect temperature measurement at coolant inlet and outlet using integrated sensors on the PCB. No sensors in the fluid chamber to reduce leakage
Control via PWM and LIN 2.0 interface; custom solutions on request
Electronics housing with 360° EMC shielding
Plug connection high voltage circuit: Hirschmann HPS40-2 Plus (improved touch protection (IPXXB+; no HV interlock necessary)
Pressure compensation element
Fluid connection: Nozzle geometry suitable for hose and spring band clamp according to DIN 3021-3
Up to 4 mounting brackets (feasibility on request)
Validated according to LV124/VW80000 Automotive Standard
Technical Data
| High Voltage Coolant Heater | Gen 2.0 Automotive |
|---|---|
| Heating capacity at 65°C inlet, 10l/min, ≥ 280 V (kW) | 5 |
| Heating capacity at 45°C inlet, 10 l/min, ≥ 350 V (kW) | 7 |
| Operating voltage (V DC) | 195 - 450 |
| Nominal voltage (V DC) | 280 |
| Flow rate (l/min) | 6 - 14 |
| Nominal flow rate (l/min) | 10 (at 5 – 7 kW) |
| Pressure drop at 0°C, 10 l/min (mbar) | < 20 |
| Max. Current (A) | 20 |
| Power control | PWM |
| Communication interface | LIN 2.0 as standard (LIN 2.x on request) |
| Operating temperature (°C) | -40 to +110 |
| Protection class according to ISO 20653 | IP6K9K, IPX7 |
| Lifetime in heating mode (h) | 15.000 |
| High-voltage connection | Hirschmann HPS40-2 Plus |
| Fluid connection with crimp for hose connection (mm) | Ø 20 |
| Coolant mixing ratio (water: antifreeze) | 60:40 to 40:60 |
| Dimension without fluid connection L x W x H (mm) | 201 x 90 x 73 |
| Dimension with fluid connection L x W x H (mm) | 201 x 117 x 73 |
| Weight empty (kg) | < 1,2 |
Applications
High-voltage coolant heater for efficient thermal management in Automotive
Battery or interior heating in electric and hybrid vehicles