A composite busbar for charger integrated capacitor

Abstract

The invention relates to an integrated capacitor composite busbar, in particular to a composite busbar used for an integrated capacitor of a charger. The utility model relates to a composite busbar used for integrating capacitors of a charger. There are 5 layers of busbars stacked from top to bottom, consisting of U busbar, V busbar, W busbar, positive busbar and negative busbar. It is electrically connected to the P-phase, O-phase, N-phase, 1-phase and 2-phase of the integrated capacitor respectively through self-locking nuts. The invention provides a composite busbar design for the integrated capacitor of the charger, which consists of 5 layers of busbars. It is safe and effective to use the DC filter positive electrode 1, DC filter negative electrode 2 and 3 groups of the integrated capacitor for the potential of DC voltage regulation. P, O, N are separated, which has the advantages of high integration and high space utilization. At the same time, the installation is convenient and the technology is mature. Insulation is used in the middle of each potential, and the electrical performance is reliable and the failure rate is low.

Description

technical field [0001] The invention relates to an integrated capacitor composite busbar, in particular to a composite busbar used for an integrated capacitor of a charger. Background technique [0002] Under the background of the national energy strategy, along with the continuous enhancement of people's awareness of environmental protection and the development of hybrid technology, rail transit locomotives in the form of hybrid vehicles have become a development trend. As an indispensable part of hybrid technology, the charger plays an important role in saving energy, reducing vehicle weight, and enabling quick response. The charger includes an integrated capacitor that can stabilize DC voltage and DC filtering. There are 5 groups of 11 lead terminals at the connection points, which are respectively connected to the three major components of power module, reactor and filter. A highly integrated capacitor for chargers such as figure 1 and figure 2 As shown, it includes ...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the space of the charger, the wiring points of the integrated capacitors are relatively concentrated, and they have the characteristics of a large number and different potentials.

There are the following disadvantages: 1) There are a total of 11 wiring points in 4 rows of integrated capacitors, which are relatively concentrated

If cables are used for wiring, a space of at least 150mm must be reserved in three dimensions next to the wiring points of the integrated capacitors, because the cables need a large space when bending to ensure the bending radius requirements during wiring. Therefore, for the charger, use The cable wiring method is difficult, it is not easy to ensure the electrical clearance at the terminal, and the space is too large, and the design cycle is long

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