Integrated capacitor laminated DC-link busbar combining stacked copper conductors, insulation layers and DC-link capacitance for compact power-module interconnection in EV inverters, PCS and other high-power converters.
Standard name: Integrated Capacitor Laminated Busbar / DC Bus Integrated Busbar
English: Integrated Capacitor Laminated Busbar, also commonly called DC-Link Busbar Assembly
Industry colloquial names: capacitor busbar, DC-Link busbar, laminated busbar capacitor assembly (ICB)
This product is most accurately classified as a Laminated Busbar, specifically an Integrated Capacitor Laminated Busbar or DC-Link Busbar Assembly. It combines stacked positive and negative copper conductors separated by insulation with integrated DC-link film capacitance and multiple power terminals. This architecture shortens the electrical path between the capacitor and switching devices, helping reduce loop inductance and switching-voltage overshoot. Similar capacitor-busbar integration is used commercially for low-inductance DC-link assemblies.
Base body: Laminated Busbar (multi-layer copper conductors + insulating film hot-pressed together, with positive and negative electrodes stacked to achieve extremely low stray inductance), then DC-Link Film Capacitor is welded on to form an integrated assembly. It is not a simple busbar, but a busbar + capacitor integrated semi-finished product, directly connected to IGBT/SiC power modules.
Core purpose: shorten the loop distance from the capacitor to the power semiconductor, reduce loop stray inductance, suppress switching spikes, and adapt to SiC high-frequency inverters.
New energy vehicles (EV/HEV)
On-board main drive inverters, on-board OBC on-board chargers, and on-board DC-DC converters. The capacitor is generally a film DC-Link capacitor, laser/resistance welded onto the laminated busbar, connecting to SiC/IGBT power modules.
Energy storage converters PCS (BESS energy storage systems)
DC side of large commercial and industrial energy storage and residential energy storage converters, DC bus assemblies inside energy storage cabinets.
Photovoltaic / wind power inverters
Photovoltaic string and central inverters, wind power converters (pitch control + generator-side converters).
Industrial high-power drives
High-power frequency converters, servo drives, UPS uninterruptible power supplies, high-power welding machines.
Rail transit
High-speed rail and subway traction converters.
Others: marine power conversion, high-power data center power supplies.
| Tipo de producto | Integrated Capacitor Laminated Busbar |
|---|---|
| Estructura | Laminated Busbar with Integrated DC-Link Film Capacitor |
| Material del conductor | Multi-Layer Copper Conductors |
| Aislamiento | PET sheet |
| Configuration | Stacked Positive and Negative DC Conductors |
| Connection | Multiple Flat Power Terminals with Mounting Holes |
| Interface | IGBT and SiC Power Modules |
| Solicitud | EV Inverters, PCS, Renewable Energy and Industrial Drives |
