Revolutionary High-Voltage Solid-state iBDU for EV
Engineered for the future of electric mobility, HIITIO’s solid-state iBDU replaces traditional mechanical components with advanced power semiconductors, delivering superior safety, efficiency, and intelligence.
- Microsecond-level fault cutoff (<10 μs) for maximum system safety.
- No mechanical contacts, no arcing, no spark risk.
- 1,000,000 switching cycles — ideal for EV & aerospace.
- Compact, lightweight design with exceptional thermal performance.
- Supports CAN, RS485, and hardwire signals with live fault reporting.
HIITIO Solid-state iBDU for EV
A solid-state replacement for mechanical BDUs, delivering superior speed, safety, and durability.
HIITIO automotive-grade solid-state iBDU embodies high reliability and intelligent electrification design. It’s tailor-made for next-generation intelligent, standardized, and integrated EV battery packs, fully covering all traditional BDU functions while overcoming their key limitations.
Comparison Between solid-state iBDU and Traditional BDU
VS.
| Feature | Traditional BDU | Solid-state iBDU |
|---|---|---|
| Load Capability | Not scalable, depends on relays | Scalable, Flexible configuration |
| Response Speed | 10-50ms | <10μs |
| System Efficiency | 99.98% | 99.87% |
| Maintenance Frequency | 2 years | 10 years |
| Failure Rate (PPM) @10000 hrs | 120 | <10 |
| Cycle Life | 50,000~100,000 cycles | 1,000,000 cycles |
| Fault Recoverable | NO | YES |
| NVH | Noise when action | No noise |
| Dimension (1000A@900V, 4 circuits) | 450*250*150mm | 80% less |
| Weight (1000A@900V, 4 circuits) | 2~4 kg | 50% less |
Ultra-Fast Fault Protection
When a fault current or collision occurs, the HIITIO’s High-Voltage Solid-State Solution isolates the fault and cuts off the current within microseconds — far faster than traditional relays, which typically respond in milliseconds and may even experience contact sticking, preventing safe disconnection.
Simplified, Plug-and-Play Design
By eliminating the complex wiring, copper busbars, and component assemblies of traditional BDUs, the HIITIO’s High-Voltage Solid-State Solution’s plug-and-play architecture dramatically reduces system complexity and lowers assembly costs.
Extended Lifespan and Superior Reliability
Traditional contactors suffer from contact wear after long-term switching, with a typical lifespan of only 100,000–200,000 cycles. The HIITIO’s High-Voltage Solid-State Solution’s semiconductor-based switching greatly minimizes mechanical wear from electrical and thermal stress, achieving a lifespan of up to 1,000,000 cycles for enhanced reliability.
Why Solid-State? Why Now?
Solid-state technology eliminates mechanical limitations, enabling faster response, higher reliability, and smarter protection—meeting the demands of modern EV, aerospace, and high-voltage energy systems.
Ultra-Fast Protection (<10 μs)
Detect and isolate short circuit or overcurrent events in microseconds — compared to 10–50 ms with mechanical contactors.
Contact-Free Switching
No mechanical contacts, no arcing, no sticking, no physical wear — dramatically improving reliability and safety.
Million-Cycle Lifetime
Solid-state architecture supports >1,000,000 switching cycles, removing lifetime bottlenecks of traditional relays.
Lightweight
Up to 50% lighter and 80% smaller than legacy BDU/contactor + fuse assemblies.
Smarter Diagnostics
Integrated voltage, current, and temperature sensing with CAN, RS485, or analog interface options.
High-Reliability Applications
Aviation, EVs, robotics, defense, industrial DC grids, ESS — anywhere safety and uptime matter.
Integrated Functions in One Compact Module
Instead of using fuses, contactors, shunts, Hall sensors, voltage modules, and complex wiring, HIITIO integrates all essential protection, switching, and monitoring functions into a single compact, semiconductor-based module.
Switching & Protection
- Main ± switching (solid-state)
- High-voltage e-fuse
- Integrated pre-charge
- Solid state circuit breaker
- Thermal protection
Deliver fast, arc-free, semiconductor-based switching with integrated protection against short circuit, overcurrent, overvoltage, and thermal events—ensuring safe, reliable operation in any high-voltage environment.
Sensing & Communication
- Current sensing
- Voltage measurement
- Temperature monitoring
- CAN/RS485 interface
- Fault reporting
- Diagnostics & SOH
Integrated current, voltage, and temperature sensing paired with real-time CAN or RS485 communication ensures accurate monitoring, fast diagnostics, and seamless system coordination.
Engineered for Demanding Applications
Optimized to deliver reliable, high-performance power protection across mission-critical environments where safety, speed, and durability are non-negotiable.
Electric Vehicles (EV)
- High-voltage battery protection
- Intelligent BDU (iBDU) replacement
- Fast short-circuit isolation
- Lightweight power architecture
eVTOL / Aerospace Power Systems
- Microsecond protection critical for propulsion safety
- Zero-arc switching for EMI-sensitive environments
- Lightweight, compact design
Energy Storage Systems (ESS)
- High-voltage DC distribution
- Fast fault isolation
- Long-life maintenance-free power switching
Industrial High-Voltage DC Systems
- Robotics & automation
- DC microgrids
- High-power converters
FAQ
What makes HIITIO’s iBDU safer than mechanical contactors?
HIITIO iBDUs use semiconductor switches instead of mechanical contacts, eliminating arcing, contact bounce, and welding risks. The system detects abnormal currents and performs <10 μs short-circuit cutoff, dramatically faster than the 10–50 ms response typical of mechanical relays.
Can HIITIO customize voltage, current, and interface specifications?
Yes. HIITIO offers full customization for voltage levels, current ratings, cooling methods, communication interfaces, enclosure size, and multi-channel configurations. Our engineering team works closely with OEMs and integrators to match system architecture and certification requirements.
Does the iBDU fully replace fuses and contactors?
In most applications, yes. iBDUs integrate the functions of:
- Main contactors (positive & negative)
High-Voltage E-Fuse - Pre-charge relays
Solid state circuit breaker - Shunt or Hall sensors
- Voltage/temperature sensors
This significantly simplifies system design and reduces maintenance.
How fast can the iBDU respond to short circuits or overloads?
The iBDU detects and isolates short-circuit events in less than 10 microseconds, which is 1,000× faster than mechanical devices. Overcurrent and I²t protection thresholds are software-configurable.
How long is the lifetime of iBDU & SSPC compared to mechanical relays?
Mechanical contactors typically last 50,000–100,000 cycles, while HIITIO iBDU & SSPC achieve over 1,000,000 switching cycles with zero contact wear.
Ready to Build a Safer, Smarter High-Voltage System?
Talk to our engineers or request a sample today.
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