PTC PTC PTC unit for Motor-vehicle PTC heater comprising thereof and air conditioning system comprising thereof

摘要

Provided is a PTC unit for a vehicle heater. PTC unit according to an embodiment of the present invention includes a heat generating unit including a PTC (Positive Temperature Coefficient) element; And a heat dissipation unit provided on at least one surface of the heat dissipation unit and a heat dissipation base and a heat dissipation film provided on at least a portion of an outer surface of the heat dissipation base to improve heat dissipation performance. According to this, it is possible to express the improved heat dissipation performance without structural change to increase the specific surface area of the heat dissipation portion while reducing air permeability for improving the heat dissipation performance, and at the same time, the heat dissipation performance is excellent and the heat dissipation performance can be continuously expressed. In addition, as the air permeability of the heat dissipation unit is improved, noise and power consumption increase due to overuse of a peripheral device such as a fan can be prevented. Furthermore, the PTC heater for a vehicle can be realized at a reduced production cost since the overheating of the PTC module and the overload of the PTC module control circuit are prevented due to a decrease in air permeability of the heat dissipation unit.