Battery, motor and motor control technology are the three cores of new energy vehicles. In the motor drive and control circuit, the main electronic components required are power semiconductor devices IGBT, control IC and capacitor, of which IGBT accounts for about 2/3 of the cost.
The core of the motor control technology is the inverter technology that requires efficient motor control. The inverter technology of high efficiency motor control requires a powerful IGBT module and a matching DC support capacitor.
For a long time, ceramic capacitors and aluminum electrolytic capacitors are the most common capacitor electronic components on the market. They are widely used in various electronic products, mainly in the circuit system for filtering, frequency modulation, DC isolation and time control.
With the intensification of automotive electrification, the voltage and output power of automotive circuit systems have been greatly improved, and the critical components have stricter requirements on the voltage and impact resistance of electronic components. The changes in working conditions put forward new requirements for the performance of capacitive components in electronic systems, thereby driving the automotive industry's demand for film capacitors.
The film capacitor is the main component in the drive circuit of electric vehicles, which mainly plays a smoothing role. The inverter converts the direct current of the battery into a voltage with small fluctuations through the converter, and then converts it into a rectangular wave similar to alternating current through the IGBT switching element. The resulting surge voltage is very large and needs to be eliminated with a smoothing capacitor.
In the field of new energy vehicles, the existing aluminum electrolytic capacitors will be partially replaced by film capacitors in the future. At present, more and more companies have replaced electrolytic capacitors with film capacitors. Both BYD "Qin" and Tesla Model 3 use film capacitors.
At the same time, the use of thin-film capacitors in DC / DC, motor control systems, battery management systems, and other high-voltage electrical units will also increase with the promotion and popularization of new energy vehicles.
ICAR Italy is one of the leading manufacturers of low and medium voltage capacitors and systems. The company was founded in 1946, and its 70 years of experience in research, design, development and production of high-performance capacitors have maintained its undisputed leadership position. ICAR began to develop capacitors in metallized polypropylene in the early 1960s. In addition, from the beginning, Icar realized the importance of developing Icar's own metallization system to control the production process from polypropylene film to finished capacitors and systems. Icar products mainly include: power electronic capacitors (DC or AC applications, buffers); protection capacitors; energy storage and fast discharge capacitors; induction heating capacitors; LV and HV power factor correction systems and components; LV active filters, voltage regulation Devices, transformers and special chokes; lighting and motor running capacitors; EMI / RFI filters, etc.
Since 1965, ICAR has metallized all the polypropylene films it uses. Capacitive components, spraying, surface treatment and testing have all been performed on site using specially made systems.
Capacitors with safety devices in self-regenerating metallized polypropylene film in a metal case. Using traditional materials and strict construction standards, it is recommended to use these capacitors when safety and reliability are a priority.
ECOFILL is a self-healing metallized polypropylene film capacitor filled with resin in a plastic case. The simple design, highly automated production process and quality control system make these capacitors highly reliable for every application.
ICAR can provide a series of solutions for new energy applications.