With focus on environmental protection, electric vehicle development has gained tremendous international attention and are getting into automotive market. Automobiles with internal combustion engines use engine waste heat for heating, they need additional equipment as their main heating source. High Voltage Positive Temperature Coefficient (PTC) Heaters which are capable of achieving the required heating power, efficiency, and reliability is considered to be best choice. Positive temperature coefficient (PTC) heaters bring efficiency and safety to EV heating systems. The heating element inside a PTC heater has a positive temperature coefficient and its resistance increases with temperature. When power is first applied to the cold PTC heating element, it has a low resistance and draws a large amount of current. As it heats up, the resistance increases and the current draw decreases. This makes a PTC heater inherently both safe and efficient; the PTC heater will stop drawing current if it overheats and it only draws the current it needs to maintain temperature. A PTC heater also heats faster than a traditional element, as it draws maximum current when it is cold.
The heater part of the PTC air heater assembly is located in the lower part of the heater, using the characteristics of the PTC sheet for heating. The heater is energized by high voltage, the PTC sheet generates heat, the heat is transferred to the heat sink aluminum strip, and then the airbox fan blows over the surface of the heater, taking away the heat and blowing out warm air. PTC heater compact structure, reasonable layout, maximum efficiency use of heater space, and in the design of the heater to consider the safety, waterproof, assembly process, to ensure that the heater can operate normally. PTC electric heater is most widely applied to electric vehicle today for defrosting and air heating.Compared to traditional heater, it is safer and more reliable because the self-regulating PTC element will not be damaged without air flow.
NF PTC air heater assembly adopts one-piece structure, integrating controller and PTC heater into one, the product is small in size, light in weight and easy to install.
Post time: Mar-09-2023
