Modular bus capacitor integrated with filter and discharge resistor

Abstract

The invention provides a modularized bus capacitor integrated with a filter and a discharge resistor. The modularized bus capacitor comprises a shell, a bus capacitor core, a positive pole direct current busbar, a negative pole direct current busbar, a Y capacitor, a magnetic ring and a discharge resistor module, the Y capacitor comprises a positive electrode Y capacitor and a negative electrode Y capacitor; the shell is of a square cylindrical structure; two symmetrical mounting grooves are formed in the front side of the shell; the pole Y capacitor and the negative pole Y capacitor are accommodated in the mounting grooves in a matched manner and are fixed; the rear side of the shell is provided with a first connecting column used for fixing the positive pole direct current busbar and the negative pole direct current busbar. The Y capacitor, the discharge resistor module, the magnetic ring and the bus capacitor are integrated, so that the occupied space is reduced, and the space utilization rate is improved; an interference current conduction path is shortened, and the electromagnetic compatibility is improved; and the Y capacitor, the discharge resistor module and the magnetic ring are integrated outside the bus capacitor, so that heat dissipation is facilitated, adverse effects on heat dissipation of a bus capacitor core are avoided, and the heat dissipation performance of the module is improved.

Description

technical field [0001] One or more embodiments of the present specification relate to the technical field of electric vehicle motor controllers, and in particular, to a modular bus capacitor with an integrated filter and a discharge resistor. Background technique [0002] While the rapid development of science and technology has brought great convenience to human life, the problem of environmental pollution has also become severe. The traditional fuel vehicle as the main travel tool is an important part of the problem of environmental pollution. The replacement of traditional gasoline vehicles by automobiles has been vigorously promoted. However, due to the low integration of the bus capacitor of the electric drive system and other components, the motor controller is large in size, which greatly limits the output power of the new energy vehicle. In addition, components such as filters and discharge resistors often have parameters that are difficult to adjust or stabilize. T...

AI Technical Summary

Problems solved by technology

[0010] To sum up, the common problems in the current related research are: high integration leads to insufficient flexibility of component parameters and difficult adjustment, and too high integration leads to poor heat dissipation, easy failure of components, and reduced stability

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