Encapsulation pulse power capacitor

Abstract

The present invention provides an encapsulation pulse power capacitor. The encapsulation pulse power capacitor comprises a plastic package housing, an encapsulation glue layer, two metal electrode slices and a plurality of capacitors. The capacitors are connected in parallel through the two metal electrode slices, each two metal electrode slice comprises a plurality of electrode plates, one expansion joint is arranged between each two adjacent electronic plates, the electrode plates are provided with clamping plate mechanisms, the two metal electrode slices are arranged at intervals in the plastic package housing, the clamping plate mechanisms of the two metal electrode slices are oppositely arranged to form necks fixing the capacitors, the capacitors are stacked between the two metal electrode slices, capacitors are clamped in the corresponding necks, two ends of the capacitors are welded on the corresponding electrode plates, and the encapsulation glue layer is arranged between the plastic package housing and the capacitors and between the adjacent capacitors. The necks are employed to fix the capacitors and weld the capacitors to allow the welding to be convenient and rapid, effectively buffer the extension stress of the capacitors, avoid crack of the capacitors and avoids phenomena of generation of expansion breakdown and flashover.

Description

technical field [0001] The invention relates to a potting pulse power capacitor. Background technique [0002] In existing pulse power capacitors, in order to increase capacitor capacitance and energy storage energy, multiple capacitors are usually connected in parallel as energy storage units, and multiple capacitors are connected in parallel through metal electrode sheets connected to capacitor electrodes. However, for pulse power capacitors with this structure, due to the expansion of the capacitor when it is heated and the ambient temperature changes, it is easy to squeeze each other due to expansion between the capacitor and the capacitor or between the capacitor and the metal electrode sheet, resulting in the expansion stress of the capacitor. Cracks are generated due to damage, and there is a risk of expansion breakdown and high-voltage flashover, and the reliability and safety are low. On the other hand, the existing capacitors are directly fixed on the metal electr...

AI Technical Summary

Problems solved by technology

However, for pulse power capacitors with this structure, due to the expansion of the capacitor when it is heated and the ambient temperature changes, it is easy to squeeze each other due to expansion between the capacitor and the capacitor or between the capacitor and the metal electrode sheet, resulting in the expansion stress of the capacitor. Cracks are generated due to damage, and there is a risk of expansion breakdown and high-voltage flashover, and the reliability and safety are low

On the other hand, the existing capacitors are directly fixed on the metal electrode sheets by welding, the welding process is complicated, time-consuming and low in work efficiency

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