Regular hexagonal direct current filter capacitor

Abstract

The invention discloses a regular hexagonal direct current filter capacitor which comprises a shell and a capacitor body. The shell is a regular hexagon annular shell which is defined by a bottom surface and two side walls and provided with an opening at the top. The capacitor body comprises a capacitor core group as well as a positive busbar and a negative busbar which are sequentially stacked at one side of the capacitor core group, the capacitor core group is a regular hexagonal annular core group enclosed by a plurality of cores, and the positive busbar and the negative busbar are regular hexagonal annular busbars; the capacitor body is installed in the shell, and the positive busbar and the negative busbar are arranged at one side close to the opening of the shell. According to the regular hexagonal direct current filter capacitor provided by the invention, the volume of the filter capacitor is effectively reduced, and the service life of the capacitor is prolonged.

Description

technical field [0001] The invention relates to the field of capacitors, in particular to a regular hexagonal DC filter capacitor. Background technique [0002] The performance of the motor controller of new energy vehicles is largely affected by the design of the filter. At present, the filter used in the new energy motor controller is mainly a bus DC filter, but there are the following problems: 1. The existing new energy The bus DC filter capacitor of the car motor controller is in the shape of a cuboid, which limits the space layout of the motor controller; second, the cuboid shape of the existing bus DC filter capacitor makes it difficult to share the water cooling pipe with the control module, requiring more space and higher costs. Three, the existing new energy vehicle motor controller bus DC filter capacitor cannot realize the uniform distribution of capacitor stray inductance; four, when the existing DC filter capacitor is working, the ripple current cannot be even...

AI Technical Summary

Problems solved by technology

[0002] The performance of the motor controller of new energy vehicles is largely affected by the design of the filter. At present, the filter used in the new energy motor controller is mainly a bus DC filter, but there are the following problems: 1. The existing new energy The bus DC filter capacitor of the car motor controller is in the shape of a cuboid, which limits the space layout of the motor controller; second, the cuboid shape of the existing bus DC filter capacitor makes it difficult to share the water cooling pipe with the control module, requiring more space and higher cost

Three, the existing new energy vehicle motor controller bus DC filter capacitor cannot realize the uniform distribution of stray inductance of the capacitor; four, when the existing DC filter capacitor is working, the ripple current cannot be uniformly distributed inside the capacitor, which affects the service life;

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