New Energy Vehicle Core Component --Film Capacitor
May 14, 2022
A capacitor is a passive electronic device, which is a passive electronic component separated by an insulating material and an insulating medium between the electrodes. It can be used as a kind of energy storage, regulation, filtering, coupling, rectification, DC voltage, bypass circuit, coupling, etc. A film capacitor is a capacitor that uses a film as a medium.
Inductive film capacitors have wires attached to the inner electrodes, while non-inductive types have wires or terminal electrodes at their ends. Compared with the inductive type, the non-inductive type has a lower inductive component and better high frequency performance. In addition, the use of non-inductive coils can reduce the loss of film capacitors and improve the service life of the capacitors. The thickness and volume of the laminated film capacitors are small, which is suitable for the coil type coil type of small electronic products, so the coil type is widely used in electronic equipment. filtering, isolation, bypassing, coupling and noise reduction.
The application field of film capacitors continues to expand, new application fields continue to emerge, and the emergence of new fields such as new energy vehicles, photovoltaics, wind power generation, etc., makes the application scope of film capacitors continue to expand, and the production process and technical level of film capacitors continue to improve. The application range of capacitors has also expanded. Like the 660 V AC inverter, the equivalent capacitance of film capacitors is one-half of the equivalent capacitance of capacitors at the same price;
As a new type of hybrid vehicle, film capacitors have been widely used in pure electric vehicles, such as pure electric vehicles. However, the cruising range of pure electric vehicles is short, the charging time is long, and the safety is questioned. In order to increase consumers' trust in pure electric vehicles, new energy vehicle manufacturers are constantly developing their core systems. The application of film capacitors in new energy vehicles reflects the performance improvement of drive inverters in power systems.
