Explosion-proof double-value capacitor

Abstract

The invention discloses an explosion-proof double-value capacitor. According to the technical main points, the explosion-proof double-value capacitor comprises a first capacitor core pack, a core rod and a second capacitor core pack; the explosion-proof double-value capacitor is characterized in that the height of the first capacitor core pack is smaller than that of the second capacitor core pack; the core rod is an insulating core rod and is provided with a through hole; the through hole and the core rod are coaxially arranged; the first capacitor core pack is arranged in the through hole; and the second capacitor core pack is wound on the outer side wall of the core rod. The explosion-proof double-value capacitor has the advantages that welding of a pin on the first capacitor core pack is facilitated, the heat dissipation effect can be improved to reduce the burst probability and the service lifetime is prolonged.

Description

technical field [0001] The invention relates to an explosion-proof double value capacitor. Background technique [0002] The double-value capacitor is used in the starting and running of the motor. In the prior art such as figure 2 As shown, the structure of the dual-value capacitor includes a mandrel 4, a first capacitor core package 3, an isolation film 2, a second capacitor core package 1 and pins 5, and the first capacitor core package 3 is wound on the mandrel 4, The second capacitor core package 1 is wound around the periphery of the first capacitor core package 3, and an isolation film 2 is provided between the first capacitor core package 3 and the second capacitor core package 1, and the pins 5 are respectively welded to the first capacitor core package package 3 and the end of the second capacitor core package 1. In this double-value capacitor structure, due to the first capacitor core package 3 and the second capacitor core package 1 being set at the same heigh...

AI Technical Summary

Problems solved by technology

In this double-value capacitor structure, due to the first capacitor core package 3 and the second capacitor core package 1 being set at the same height, and the limitation of capacitance, when the first capacitor core package 3 is wound on the mandrel 4, the formed The thickness is thinner, so there are a series of defects: 1. Due to the thinner thickness, the end area of ​​the first capacitor core package 3 is small, which makes it difficult for the pin 5 to be welded to the end of the first capacitor core package 3. 2. Since the first capacitor core package 3 is completely wound on the core rod 4, that is, the entire core rod 4 is covered, the heat dissipation of the first capacitor core package 3 is poor; 3. 1. Since the first capacitor core package 3 is thin and has poor heat dissipation, it is easy to burst, has a short lifespan and low reliability, so there is room for improvement

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