Heating Solution with over 95% Energy Efficiency
The electric High Voltage Heater (HVH) is the ideal heating system for plug-in hybrids (PHEV) and battery electric vehicles (BEV). It converts DC electric power into heat with practically no losses.
Innovative Heating Layer Technology
The HVH heating element, just 0.6 mm thin and 200 cm² in size, consists of a complex layer system and is firmly bonded to the heat exchanger. That is how almost loss-free, rapid conversion of electrical power to heat is achieved.
The maximum in energy efficiency and the small installation space requirement substantiate the superiority of the heating layer principle over widely prevailing technologies on the market that result in reduced performance when coolant temperatures go up. Another advantage of the heating layer technology: As opposed to PTC elements, it does not use rare earths.
Available with 5, 7 and 10 kW Heating Output
Addressing different customer requirements the proven HVH technology is available in 3 variants:
HVH 50 Gen 1.5 with heating output of 5 kW
HVH 70 Gen 1.5 with heating output of 7 kW
HVH 100 with heating output of 10 kW
Multi-level Safety Concept
To avoid injuries to people and damage to surrounding components, multilevel, redundant safety measures have been integrated into the hard and software as well as into the mechanism of the HVH.
Thanks to the type approval and CE conformity, Webasto HVH is compliant with the international vehicle standards. Redundant safety measures are implemented, such as SPICE Level 2 software design and Hardware design in accordance with ISO26262.
- Coolant outlet temperature
- Coolant inlet temperature
- PCB temperature
- Overheating sensor
- High voltage current sensor
Additional safety measures
- Galvanic separation between low and high voltage
- Sensor layer monitoring the whole heat layer
- Switches to provide a redundant switch-off
Protects the Battery From Power Peaks
The Webasto HVH featuring the heating layer technology is capable of creating an effective balance of the high voltage circuit. Thanks to its characteristics with rapid and particularly precise adjustability, the heating layer can absorb short-term power spikes, converting them directly into heat – a clear advantage over PTC heaters.
Unique is the active discharge support function of the HVH 100, that reduce the discharge time of the complete high voltage circuit to milliseconds.
Wide Voltage Range up to 870 Volts
The HVH 50/70 Gen 1.5 high voltage range is 100 - 490 Volts, which fits perfectly most electrical passenger cars.
The HVH 100 delivers up to 10 kW heating power and works with voltages up to 870 V, needed by many commercial vehicles such as busses, trucks and LCV.
Fast and Flexible Installation
The compact design of the HVH and its low weight of only 2 / 2.6 kg allow for flexible installation positions in the engine compartment. To also enable particularly fast and easy Plug & Play installation in series production, all connections are located on one side of the device.
|HVH 50 Gen 1.5||HVH 70 Gen 1.5||HVH 100|
Heating performance (kW)
HV voltage range DC (V)
|100 – 490||100 – 490||250 – 870|
|> 95||> 95||> 95|
Controllability steps (W)
|284 x 200 x 54||284 x 200 x 54||325 x 200 x 72|
Temperature range for heating (°C)
|-40 to 90||-40 to 90||-40 to 90|
Temperature range for ambient (°C)
|-40 to 125||-40 to 125||-40 to 125|
|LIN 2.1||LIN 2.1||LIN 2.1|
Passive discharge (V) according to ISO 6469-3.3.
|< 60 in 4 Sec||< 60 in 4 Sec||< 60 in 40 Sec*|
Dielectric strength (V DC)
IP protection class
|IP 6K9K IP 6K7||IP 6K9K IP 6K7||IP 6K9K IP 6K7|
|TYCO HVA280||TYCO HVA280||TYCO HVA280|
|LV FEP connector 8 PIN integrated de-aerating membrane||LV FEP connector 8 PIN integrated de-aerating membrane||LV FEP connector 8 PIN integrated de-aerating membrane|
|ISO 6469 Part 3 / ECE R100||ISO 6469 Part 3 / ECE R100||ISO 6469 Part 3 / ECE R100|
|According to ISO 26262||According to ISO 26262||According to ISO 26262|
|ECE R10 Rev. 5||ECE R10 Rev. 5||ECE R10 Rev. 5|
Insulation resistance (MΩ)
|15 years or 12,000 heating hours||15 years or 12,000 heating hours||15 years or 12,000 heating hours|