With the intensification of automotive electrification, the voltage and output power of automotive circuit system have been greatly improved, and the requirement of the key components on the voltage and impact resistance of electronic components is more stringent. The change of working conditions puts forward new requirements for the performance of capacitive components in electronic systems, which stimulates the demand for metal film capacitors in the automotive industry. For example, the second generation of Toyota Prius replaced the existing aluminum electrolytic capacitors with thin film capacitors. On the one hand, metal film capacitors are very suitable for use in the electrical environment of new energy vehicles because of their voltage and impact resistance. On the other hand, from 2011 to March 2016, the system and weight of metal thin film capacitors have been reduced by 3 or 4 times, and the metallized partitioning technology has been improved, which has greatly helped the development of thin film capacitors. At present, thin film capacitors can cover the voltage range between 600 VOC and iZoovoc more economically than electrolytic capacitors.

The development of metallized thin film capacitors in major areas of the market The films used in metallized thin film capacitors have a direct impact on the performance of products. There is still a big gap between domestic producers who are good at making polypropylene film and foreign high-quality polypropylene film (such as Steiner of Germany, ChuangSP, Polo Lai of France and Toray of Japan), especially the crystallinity of PP film which affects capacitance life, high voltage and high temperature characteristics. Domestic producers can only achieve 60%, 65%, while foreign producers can reach 75% to 80%, and gradually in the future. Raise. In this way, if we use the same thickness of film, the same technology to make products, foreign high-quality film will be better than the domestic product life of 50% longer film, high voltage resistance more than 30%. In addition to the need to provide high-quality products, the rapid response to customer demand and good cost control capabilities are important barriers to competition in the film capacitor industry.