Busbar for power electronic equipment and power electronic equipment

By adopting a PCB stacked busbar structure in power electronic devices, separating current channels and stacking copper layers, the problems of high manufacturing difficulty and parasitic inductance of stacked busbars are solved, realizing low-cost and high-performance power electronic devices.

CN224153722UActive Publication Date: 2026-04-21XINGHUAN JUNENG (XIAN) TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XINGHUAN JUNENG (XIAN) TECHNOLOGY CO LTD
Filing Date
2025-05-09
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing laminated busbars are difficult and costly to manufacture in power electronic equipment, and their parasitic inductance cannot be eliminated, making it impossible to simultaneously meet the requirements for carrying current and load.

Method used

The stacked busbar with PCB structure carries the charging and discharging current of the DC bus capacitor with smaller current through the first and second copper clad layers, and carries the current between the power electronic switching devices and the load with larger current through the first and second copper busbars. The structural strength of the PCB is used to support the heavier DC bus capacitor, the thickness of the copper busbar is reduced to simplify the manufacturing process, and the parasitic inductance is reduced through the stacked copper clad layer design.

Benefits of technology

It reduces the processing difficulty and cost of busbars, reduces parasitic inductance, and improves the performance and reliability of power electronic equipment, making it suitable for high-frequency, high-power power electronic equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224153722U_ABST
    Figure CN224153722U_ABST
Patent Text Reader

Abstract

The utility model provides a busbar for power electronic equipment and the power electronic equipment, the power electronic equipment comprises a direct current bus capacitor and a power electronic switch device, the busbar comprises a PCB, a first copper bar and a second copper bar, the PCB comprises a substrate, a first copper clad layer and a second copper clad layer, and the first copper clad layer and the second copper clad layer are laminated on the substrate; the DC bus capacitor is arranged on the PCB, two ends of the DC bus capacitor are respectively connected with the first copper-clad layer and the second copper-clad layer, and the power electronic switch device, the first copper bar and the second copper bar are respectively connected with the PCB. The copper-clad layer on the PCB is used for bearing the charging and discharging current of the direct current bus capacitor with small current, the first copper bar and the second copper bar are used for bearing the current between the power electronic switching device with large current and the load, the direct current bus capacitor with heavy weight is borne by utilizing the structural strength of the PCB, the PCB is higher in toughness and not prone to deformation, and the service life of the power electronic switching device is prolonged. And the reliability is higher in the use process.
Need to check novelty before this filing date? Find Prior Art