Pure electric vehicles and hybrid petrol-electric car output is direct voltage, is in commonly 320 VDC to 540 VDC, the highest reaches 700 VDC - 700 VDC, PTC ceramics as a heating element is applied in electric vehicle defrosting or heating, the most basic requirement is for a long time in the reliability of high voltage, new electronic production of this kind of PTC ceramics has the following features:

1 high voltage resistance, high resistance to voltage can reach more than 1300 VDC, ensure the reliability of the heater is long-term work under high voltage.

2 under the low temperature heat up quickly, even if the environment temperature reaches to 40 degrees, also can realize quick start;

3 under the high dc voltage power aging, after long-term use can still maintain good heating effect;

4 Curie temperature can be adjusted according to customer's request, in the range 140-250 degrees;

5 life for more than 10 years