Working principle of PTC heater for new energy vehicles
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PTC heater, also known as PTC heating element, its core component is composed of PTC ceramic heating element and aluminum tube. This type of heater has significant advantages such as low thermal resistance and high heat transfer efficiency, making it an automatic constant temperature and energy-saving electric heater.
Its design is exquisite, consisting of galvanized outer pressure plate, stainless steel corrugated spring plate, galvanized inner pressure plate, single-layer aluminum heat dissipation component, PTC heating element, double-layer aluminum heat dissipation component, nickel plated copper electrode terminal, and PPS high-temperature plastic electrode sheath and other components. It is worth mentioning that it adopts U-shaped corrugated heat dissipation fins, effectively improving the heat dissipation rate. At the same time, it combines the advantages of adhesive and mechanical, ensuring the stability and safety of PTC heating components during operation.
The safety of PTC heaters is one of its highlights. In any application, it will not experience the surface redness that may occur with electric heating tube heaters, thus avoiding safety hazards such as burns and fires. Especially when the fan malfunctions and stops running, due to insufficient heat dissipation, the power of the PTC heater will automatically drop sharply, stabilizing its surface temperature at around Curie temperature (usually around 250 ℃), ensuring the safety of use.
PTC heaters, with their high efficiency, safety, and stability, have been widely used in various heating needs and are indispensable heating equipment in modern life.
2. Working principle of PTC
The working principle of PTC heater is based on the characteristics of constant temperature heating PTC thermistor. This type of thermistor has a unique self heating characteristic, and when powered on, its resistance will enter the jump zone, thereby maintaining a constant surface temperature. This constant temperature mainly depends on the Curie temperature of the PTC thermistor and the applied voltage, and is not closely related to the ambient temperature.
It is precisely based on this constant temperature heating characteristic that PTC heaters are designed and applied. In small and medium power heating scenarios, it exhibits significant advantages. Compared with traditional heating elements, PTC heaters have many advantages such as no open flame, high heat conversion rate, almost unaffected by power supply voltage, and long natural lifespan. These characteristics make its application in electric heating appliances increasingly favored by research and development engineers.
PTC thermistors can be made into various external structures and specifications as needed, such as circular, rectangular, elongated, circular, and honeycomb porous shapes. By combining with metal components, various forms of high-power PTC heaters can be formed to meet different heating needs.
In summary, PTC heaters have become an important component of modern heating technology by utilizing the characteristics of constant temperature heating PTC thermistors to achieve efficient, stable, and safe heating effects.
