Integrated Auxiliary Inverter for Commercial EV Applications
We provide integrated auxiliary inverter solutions designed for commercial electric vehicles, combining multiple power conversion functions into a compact and efficient unit. The system integrates DC/DC converter, DC/AC inverter for auxiliary motors, and high-voltage power distribution to support essential vehicle auxiliary systems.
Designed for lightweight, simplified electrical architectures, our auxiliary inverter solutions help reduce component integration complexity, optimize power management, and improve reliability for electric buses, trucks, and other commercial vehicle platforms.
Integrated Multi-Function Design
Combines DC/DC converter, dual DC/AC inverters, and optional high-voltage distribution into a single compact unit, reducing component count and simplifying vehicle electrical architecture.
Efficient Auxiliary Power Management
Provides reliable power conversion for critical auxiliary systems, including electric air compressors, steering pumps, and low-voltage vehicle loads.
Compact & Reliable System Integration
Optimized internal layout and thermal design improve installation efficiency, system reliability, and long-term serviceability.
Integrated Auxiliary Inverter Technical Specifications
The integrated inverter combines a DC/DC converter, dual DC/AC inverters, and an optional high-voltage distribution unit into one compact solution. It converts high-voltage battery power into regulated DC and AC outputs to supply essential vehicle auxiliary systems, including electric air brake compressors and power steering pumps. The integrated high-voltage distribution unit enables centralized power management with functions such as power distribution, current monitoring, protection, pre-charge control, emergency shutdown, and insulation monitoring.
1. Environmental Requirements
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Item
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Parameter
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|---|---|
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Operating Temperature Range
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-40°C to +60°C
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Operating Altitude
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Derating required above 2,000 m
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Atmospheric Pressure Range
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70-106 Kpa
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Control Power Supply Voltage
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9–36 VDC
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Ingress Protection Rating
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IP67
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Weight (excluding connectors)
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22.5 kg
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2. PDU (Optional)
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Item
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Parameter
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|---|---|
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Input Voltage
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200-750 VDC
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Input Current
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≤350 A
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3. DC-DC Converter
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Item
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Parameter
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|
|---|---|---|
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Input Voltage (Low-Voltage)
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12 VDC
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24 VDC
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(9 V - 18 VDC)
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(15 V - 36 VDC)
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|
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Input Voltage (High-Voltage)
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380 VDC (220 V - 500 VDC)
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380 VDC (220 V - 500 VDC)
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540 VDC (400 V - 750 VDC)
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540 VDC (400 V - 750 VDC)
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|
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Ouput Voltage
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14 VDC
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27.5 VDC / 27 VDC
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Power
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1.5 kW
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3 kW
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4. DC-AC Inverters
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Item
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Parameter
|
||||||||
|---|---|---|---|---|---|---|---|---|---|
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Input Voltage (Low-Voltage)
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12 VDC / 24 VDC (9 V - 36 VDC)
|
||||||||
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Input Voltage (High-Voltage)
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380 VDC (220 V - 500 VDC)
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540 VDC (400 V - 750 VDC)
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|||||||
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Output Voltage. Frequency
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3-phase, 220 VAC. 50 Hz
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3-phase, 220 VAC. 50 Hz
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3-phase, 380 VAC. 50 Hz
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||||||
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Power
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2.2 kW
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3.7 kW
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5.5 kW
|
2.2 kW
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3.7 kW
|
5.5 kW
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2.2 kW
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3.7 kW
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5.5 kW
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|
Rated Current
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9 A
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13 A
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25 A
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9 A
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13 A
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25 A
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5.5 A
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9 A
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13 A
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5. Control Method
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Item
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Parameter
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|
|---|---|---|
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Control Voltage
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12 VDC / 24 VDC
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|
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Control Method
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Enable Control
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Active-high by default (active-high/active-low configurable)
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CAN Control
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DC-DC, DC-AC*2, CAN control supported through the high-voltage control board.
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|
* For additional configurations and customized solutions, please contact us at: contact@jenwyntech.com
Key Advantages of Our Integrated Auxiliary Inverter
Integrated Auxiliary Power Architecture
By integrating multiple auxiliary power functions into a single system, the solution reduces the number of standalone components, simplifies vehicle electrical architecture, and helps optimize installation space and overall system weight.
Optimized Electrical Design & Serviceability
The integrated layout enables cleaner high-voltage and low-voltage power distribution, reducing wiring complexity while improving accessibility for vehicle commissioning, troubleshooting, and maintenance.
Reliable Power Support for Commercial EV Operations
Designed for continuous-duty commercial vehicle applications, the system provides stable power management for essential auxiliary loads, supporting reliable operation of brake systems, steering systems, thermal management, and other vehicle subsystems.
Cost-Effective System Integration
Compared with separate auxiliary power components, an integrated solution helps reduce component coordination requirements, shorten installation processes, and improve overall vehicle development efficiency.
Manufacturing and Quality Assurance
We operate a structured manufacturing and quality management system based on standards such as IATF 16949 and ISO 9001. From component sourcing and PCBA production to final assembly and functional testing, each production stage is managed through defined processes and traceability systems to support consistent product quality and reliable delivery.
Manufacturing Process Control
Our production processes incorporate comprehensive control procedures throughout SMT, PCBA assembly, and final product manufacturing, including:
- Component traceability and material verification
- SMT process monitoring and inspection
- SPI and AOI inspection
- PCBA process tracking
- Assembly process control
Comprehensive Testing and Traceability
Each auxiliary inverter undergoes functional testing and quality inspection before delivery. Manufacturing data, test results, and repair records are maintained. Testing capabilities include:
- ICT functional testing
- ATE performance testing
- Finished product inspection
- Failure analysis and corrective actions
- Repair and rework record tracking
- OQA inspection
Production Data Management
Our production data management system provides full traceability throughout the manufacturing process, covering components, semi-finished products, and finished products. The system enables efficient tracking of:
- Material and component information
- Production process records
- Functional test results
- Product quality history
- Repair and rework records
Engineering Support for EV System Integration
Successful EV projects require effective technical communication between vehicle developers and system suppliers. We provide technical support for our EV systems, including product documentation, interface information, communication protocols, and engineering assistance during system integration.
Our support helps customers better understand system requirements, address technical issues during development and testing, and improve integration efficiency throughout the project lifecycle.
Our support includes:
- Review EV system configurations and identify potential risks
- Discuss vehicle requirements, interfaces, and application conditions
- Provide 3D and STEP files for layout and mechanical fit assessment
- Support sample installation, commissioning, and validation
- Support fault diagnosis and system troubleshooting
- Provide continuous technical communication throughout the project
Frequently Asked Questions
An auxiliary inverter provides power conversion and management for vehicle auxiliary systems that do not directly drive the vehicle, such as electric air brake compressors, power steering systems, thermal management components, and other high-voltage auxiliary loads. It helps ensure reliable operation of essential vehicle functions in commercial EV applications.
Auxiliary inverter systems are widely used in commercial electric vehicles, including electric buses, trucks, logistics vehicles, special-purpose vehicles, and other platforms requiring reliable auxiliary power management.
An integrated auxiliary power solution reduces the number of standalone components, simplifies vehicle electrical architecture, and helps optimize packaging space, wiring layout, and system maintenance compared with using separate auxiliary power units.
Yes. The auxiliary inverter can be configured according to different vehicle voltage levels, power requirements, and auxiliary system architectures. Specific adaptations are evaluated based on the vehicle application and project requirements.
Depending on project requirements, product-level adaptations may be available. Custom development requirements are evaluated separately based on technical feasibility. You may contact us at contact@jenwyntech.com for more details.
Yes. Our auxiliary inverters have been applied in domestic and international electric vehicle projects, supporting both prototype validation and mass production projects.
Technical support includes product documentation, interface information, communication specifications, troubleshooting assistance, and coordination during system debugging and validation based on project requirements.
Typical production lead time is approximately 60 days, depending on product configuration, order quantity, and production scheduling. Please contact our sales team for project-specific delivery schedules.