China's Leading Suppliers: Bridgold's Modern Factory for High-Precision EV Control Systems

Overview of China's Digital & Modern Factory Solutions

Bridgold proudly presents its new Phase II facility, spanning 15,000 m² and launched in October 2023. This state-of-the-art factory incorporates advanced digital management and intelligent production systems, guaranteeing full traceability and exceptional precision in every product. As a leading supplier in the EV control system components market, our robust capabilities enable seamless high-volume deliveries while maintaining consistent quality.

Product Details

Deep Experience in EV Control Systems

With over 40 years of expertise in copper busbars and braided wires, we possess in-depth knowledge of the challenges faced by EV control systems (inverters, OBC, DC/DC, PDU, etc.)—high-frequency switching noise, limited enclosure space, severe thermal cycling, and road-induced vibration. From material selection and structural design to insulation withstand and temperature-rise validation, we offer customized solutions throughout the entire design cycle, strictly complying with automotive industry standards.

Product Display

Product Details (Core Functions of Copper Busbars)

High-Current Transmission

Connecting inverters and drive motors for efficient, low-loss, and stable power transfer.

Equipotential & Grounding

Equalizing enclosure and structural potentials while providing safe leakage protection paths.

Vibration & Thermal Absorption

Preventing rigid connections from fatigue failure caused by road shocks and thermal cycling.

Type 1

Laminated Busbars

Low parasitic inductance effectively suppresses IGBT/SiC turn-off overvoltage, protecting power devices; the flat structure significantly reduces enclosure depth and increases power density; custom L/Z shapes fit compact layouts.

Type 2

Braided Busbars

Ultimate flexibility with an extremely small bending radius, absorbing complex vibrations and displacements between modules; the braided structure distributes stress to resist high-frequency fatigue; the open surface area enhances heat dissipation; high tolerance greatly simplifies assembly.

Type 3

Rigid Busbars

Manufactured from high-purity T2 copper via rolling or extrusion, offering extremely high current-carrying capacity and strong mechanical rigidity. With a fixed form, they are ideal for main-circuit busing connections, delivering superior cost-effectiveness for standardized mass production.

Frequently Asked Questions

Q What are the main functions of copper busbars in EV control systems?

Copper busbars perform three critical functions: high-current transmission between power modules (inverters and motors), equipotential bonding/grounding for structural protection, and absorption of vibration and thermal expansion to eliminate mechanical fatigue failure.

Q Why are laminated busbars preferred for IGBT/SiC power modules?

Laminated busbars provide very low parasitic inductance, which suppresses peak turn-off overvoltages on sensitive IGBT and SiC devices. Their flat, multi-layer design also maximizes volumetric power density and fits into tight packaging spaces.

Q How do braided busbars protect against EV road-induced vibration?

Braided busbars offer exceptional multi-directional flexibility with minimal bending radiuses. The woven structure evenly distributes mechanical stress, resisting high-frequency fatigue while allowing for thermal expansion and module displacement.

Q What raw material is used for rigid busbars and what are its advantages?

Rigid busbars are fabricated from high-purity T2 copper using precision rolling or extrusion techniques. They deliver optimal electrical conductivity, high mechanical rigidity, and cost-effective scalability for standardized automotive production lines.

Q Can your busbars be customized for unique EV enclosure architectures?

Yes, we provide end-to-end custom engineering across the entire design lifecycle—including raw material selection, customized L/Z-shape configurations, insulation withstand verification, and thermal rise testing tailored strictly to automotive standards.