Vehicle-mounted high temperature resistant electrolytic capacitor and preparation method thereof

Abstract

The invention belongs to the energy storage device manufacture technical field, and specifically relates to a vehicle-mounted high temperature resistant electrolytic capacitor and a preparation methodthereof; the vehicle-mounted high temperature resistant electrolytic capacitor is high in reliability and high temperature resistant; the vehicle-mounted high temperature resistant electrolytic capacitor comprises an anode; a dielectric layer is arranged on the surface of the anode; an electrolyte layer is arranged on the dielectric layer; a cathode is arranged on the electrolyte layer; the cathode and the electrolyte layer are connected and sealed by a rubber plug; the anode and the cathode are respectively provided with an anode pin and a cathode pin; the electrolyte layer has a conductivity of 6.6+/-1ms/cm, a PH value of 5.3+/-1, and a spark voltage of above 100V; the vehicle-mounted high temperature resistant electrolytic capacitor is applied in the energy storage device manufacture field.

Description

technical field [0001] The invention belongs to the technical field of manufacturing energy storage devices, and in particular relates to a high-temperature-resistant electrolytic capacitor for vehicles and a preparation method thereof. Background technique [0002] As the working environment of automotive electrolytic capacitors becomes worse and worse, higher requirements are placed on the high temperature resistance and reliability of capacitors. However, the upper limit of the operating temperature of capacitors has become a development bottleneck in the field of automotive applications. [0003] The main reason is that the factors affecting the rated working temperature of the capacitor mainly include anode foil, cathode foil, electrolyte, rubber plug and other raw materials and structural design; Increasing the temperature of the working environment can easily lead to failure of the capacitor within the rated life, which restricts the application of capacitors in high-...

AI Technical Summary

Problems solved by technology

[0002] As the working environment of automotive electrolytic capacitors becomes worse and worse, higher requirements are placed on the high temperature resistance and reliability of capacitors. However, the upper limit of the operating temperature of capacitors has become a development bottleneck in the field of automotive applications.

[0003] The main reason is that the factors that affect the rated working temperature of the capacitor mainly include anode foil, cathode foil, electrolyte, rubber plug and other raw materials and structural design; Increasing the working environment temperature can easily lead to capacitor failure within the rated life, which restricts the application of capacitors in high-temperature working environments in the automotive field

[0004] At present, domestic and foreign manufacturers of electrolytic capacitors have little research on the design of ultra-high temperature 150°C capacitors, and no manufacturers have developed electrolytic capacitors that can operate stably at ultra-high temperatures of 150°C and above.

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