Electric heaters with PTC technology and hot film technology for electric vehicles
Common electric heater technologies in electric vehicles include PTC technology (positive temperature coefficient) and hot film technology. Both technologies are used to provide heating functions within the vehicle interior, but their principles and working methods are slightly different.
PTC technology electric heater
Working principle: PTC technology is based on positive temperature coefficient materials. When current passes through the PTC material, its resistance increases with the increase of temperature. When the temperature rises, the heating power of the electric heater will automatically reduce to avoid overheating and has the characteristics of self-control power.
Features
PTC electric heater has stable heating performance and can effectively avoid overheating.
PTC electric heaters do not require additional controllers for temperature adjustment, simplifying system design.
The heating power of PTC electric heater is positively related to temperature, so it can provide stable heating effect in low temperature environment.
Hot film technology electric heater
Working principle: Hot film technology converts electrical energy into thermal energy, using a film made of special heat-sensitive materials to provide a heating effect through resistance heating.
Features
Hot film technology electric heaters are thin, light and flexible, and are suitable for complex space designs.
Hot film technology can achieve local heating and precise heating control of the interior space of the vehicle.
Hot film technology has a faster heating speed and can achieve the desired heating effect in a short time.
Choose and apply
PTC technology is often used for large-area heating, such as car heating systems.
Hot film technology is often used in local heating scenarios such as seat heating and steering wheel heating.
Taken together, PTC technology and hot film technology are common electric heater technologies in electric vehicles. They each have specific advantages and applicable scenarios. While meeting the heating needs of vehicles, they also take into account energy efficiency, safety and comfort, etc. factor.
