The application field of solid-state aluminum electrolytic capacitors is entering some emerging fields, such as new energy vehicles, charging piles, intelligent electronic devices, etc. the rapid development of emerging industries also increases the demand for solid-state aluminum electrolytic capacitors. With the development of new energy vehicles and the abundance of models, pure electric vehicles have been developed in buses, taxis and small cars. It can be seen that the market of aluminum electrolytic capacitors is considerable.
For the automotive market with high safety requirements, the selection and design of all electronic components, including solid-state aluminum electrolytic capacitors, should be based on safety and durability. Therefore, special attention should be paid to the requirements of withstand voltage, high temperature resistance and failure threshold when selecting solid aluminum electrolytic capacitor; In the design, sufficient margin shall be reserved for withstand voltage and capacity.
The capacitor used for automobile ECU has strict requirements for temperature resistance. When driving, the automobile must be affected by the radiant heat of the engine and work in a high temperature environment. When parking, it must have low temperature resistance due to the influence of low external temperature. Specifically, it is required to have a large temperature range of - 40 ℃ ~ - + 125 ℃ and high thermal stability.
In addition to normal operating requirements, it is also necessary to ensure a longer service life in the operating temperature range (about 4000 hours). The main factor affecting the life of electrolytic capacitor is high temperature. The higher the temperature, the faster the volatilization rate of electrolyte, and the life of electrolytic capacitor decreases with the increase of temperature. The purpose of prolonging product life can be achieved by adopting methods such as high sealing and inhibiting electrolyte evaporation, that is, using sealing materials with high sealing to achieve high temperature thermal stability.
The selection of solid aluminum electrolytic capacitor with low core temperature can ensure a long service life of the capacitor. The lower the temperature of the electrolyte core, the service life will be doubled. Choosing high-quality solid-state aluminum electrolytic capacitors is much cheaper than cheap ones. When using electrolyte products, we can improve the "capacitor heat dissipation device" to solve the impact of "exposure" on the "life of aluminum electrolytic capacitors".
Of course, in the process of capacitor selection, we should select appropriate products according to the needs of different applications. Shandong Hongming Electronics Co., Ltd. provides capacitors of various brands and models, which can be used in a variety of application scenarios. We will recommend appropriate capacitor products for you according to your needs and products.