320V 3-in-1 Integrated E-Drive System | Integrated Powertrain for Both EV & Fuel-to-Electric Retrofit

For manufacturers developing brand-new light-duty EVs and retrofitting traditional fuel vehicles to electric power, common pain points include dispersed components, complicated assembly procedures and difficult parts matching. Separate motor, MCU and reducer assemblies come with messy wiring and limited chassis layout space, leaving barely enough room for fuel-to-electricity conversion projects.

Fengchuan Powertrain proudly presents the 320V 3-in-1 integrated electric drive assembly FC1D120-320 (Low Power Version) / FC1D260-320 (High Power Version). It highly integrates the reducer, permanent magnet synchronous motor and Motor Control Unit (MCU) into one single unit. The integrated housing drastically simplifies vehicle assembly, with native compatibility for front-wheel and rear-wheel independent suspension layouts. Suitable for both new vehicle development and fuel vehicle electrification retrofits, it covers a full range of vehicle types including 1.0T-2.5T light trucks, A0/A00-class passenger cars, sightseeing vehicles, mini buses and UTVs. Featuring full automotive-grade IP67 protection, it supports one-stop matching with VCUs, cooling systems, high/low voltage wiring harnesses and auxiliary drive modules, significantly cutting vehicle R&D and retrofitting costs.

1. Integrated 3-in-1 Structure, Ideal for Both New EV Assembly & Fuel-to-Electric Retrofit

This product adopts a 3-in-1 integrated design of reducer + motor + MCU, combining three core power units into a single assembly to fully eliminate drawbacks of split layouts, especially well-suited for compact chassis space in retrofits:

1. Minimal assembly workload, excellent retrofit compatibility The integrated one-piece structure eliminates dozens of high-voltage connectors, sealing flanges and mounting brackets between the motor, controller and reducer, slashing vehicle assembly man-hours. Its compact size fits neatly into original fuel vehicle chassis without extensive frame cutting or modification, greatly reducing retrofitting time and expenses.

2. Compatible with front & rear independent suspension layouts It natively supports both front-wheel and rear-wheel independent suspension configurations with no secondary housing mold changes. It can directly match existing suspension structures for newly developed vehicles as well as mini-truck and mini-van fuel-to-electric conversion projects.

3. Fewer fault points, lower maintenance costs The integrated sealed housing eliminates dozens of mechanical and high-voltage connection points, fundamentally preventing water leakage, electric leakage, loose joints and abnormal noise. Individual components can be inspected and replaced separately during later maintenance without disassembling the entire unit for easier servicing.

Standardized expansion ports are reserved on the assembly. Fengchuan Powertrain can supply dedicated VCUs, complete radiators and customized high/low voltage wiring harnesses as required. Optional 2-in-1 / 3-in-1 / 4-in-1 auxiliary drive modules (integrated PDU, DCDC, OBC) are also available. No large-scale secondary development of the vehicle electronic control architecture is needed; calibration and vehicle launch can be completed immediately after connection.

2. Dual 320V High-Voltage Power Versions Covering Commute, Cargo & Retrofit Scenarios

Equipped with a liquid-cooled permanent magnet synchronous motor built on a 320V high-voltage platform, the assembly offers low and high power variants to cover light urban commuting, heavy mountain cargo hauling and full-load retrofit operating conditions with parameters tailored to diverse operational demands.

Low Power Version FC1D120-320

Rated Power: 20kW，Peak Power: 45kW Rated Torque: 47N·m， Peak Torque: 120N·m Rated Speed: 4050rpm，Peak Speed: 12000rpm for lower energy consumption during highway cruising Max Input Torque of Reducer: 140N·m ，Reduction Ratio: 10.3 for sufficient torque amplification at low-speed startup

Application Scenarios: A0/A00 compact family cars, scenic sightseeing vehicles, campus shuttle carts, light-duty UTVs and small mini-van fuel-to-electric retrofits. Delivers smooth, energy-efficient performance and extended driving range for flat urban commutes and low-speed short-distance passenger transport.

High Power Version FC1D260-320

Rated Power: 60kW ，Peak Power: 120kW Rated Torque: 95N·m ，Peak Torque: 260N·m Rated Speed: 6000rpm ，Peak Speed: 14000rpm with broad power bandwidth and no power attenuation under full-load high-speed driving Max Input Torque of Reducer: 280N·m ，Reduction Ratio: 9.92 for explosive climbing power under heavy loads

Application Scenarios: 1.0T-2.5T light cargo trucks, mini/small electric buses, heavy-duty UTVs and mini/light truck fuel-to-electric retrofits. Abundant power reserve for urban-rural freight, mountain slope passenger transport and full-load long-distance travel.

Core Product Parameter Table

Durability & Energy Efficiency

1. Automotive-grade durable manufacturing: 3-phase round wire winding, Class H insulation and S9 continuous duty cycle deliver stable performance across an ultra-wide temperature range with no degradation under harsh conditions including extreme cold, open-air exposure and construction site dust.

2. Ultra-high overall efficiency: System efficiency exceeds 95%, effectively extending driving range and cutting daily electricity costs for converted fuel vehicles with identical battery capacity.

3. Integrated liquid cooling system: The motor and MCU share a unified water cooling circuit for uniform, efficient heat dissipation. No high-temperature power derating occurs during prolonged full-load climbing or continuous high-speed travel, making it suitable for high-frequency, heavy-duty operation.

3. IP67 Automotive-Grade Electronic Control Protection for Stable Operation in Harsh Outdoor Retrofit Environments

The integrated MCU is developed strictly to passenger vehicle automotive standards with a full-unit ingress protection rating of IP67:

• The fully sealed integrated aluminum alloy housing provides comprehensive waterproof, dustproof and splash-proof performance. Moisture and dust cannot penetrate internal electronic components during rainy freight transport, muddy construction site operation and open-air scenic area service, drastically reducing outdoor breakdowns of converted vehicles.

• Integrated liquid cooling design molded together with the motor cooling cavity eliminates the need for separate independent cooling pipelines, simplifying full thermal management layout within the limited chassis space of retrofits.

• Multi-layer safety protection for high-voltage circuits including overcurrent, overvoltage, overtemperature and short-circuit prevention eliminates risks of electric leakage and high-voltage breakdown, fully complying with safety regulations for commercial and retrofit vehicles.

4. Matching Dedicated VCU with Complete Suite of Intelligent Driving Functions

Fengchuan Powertrain supplies customized Vehicle Control Units (VCUs perfectly matched to this 3-in-1 electric drive assembly), unlocking full-vehicle control logic without extra development work. A full set of practical intelligent functions comes standard for both new EV and fuel-to-electric retrofit projects:

• Precision graded torque management: Linear, smooth power output with jolt-free acceleration protects transmission components such as reducers and half-shafts to extend overall vehicle service life.
• Intelligent hill-start assist: Eliminates vehicle rollback for safer loaded and passenger-carrying hill startups, a must-have function for mountainous and slope-heavy high-frequency operation areas.
• Downhill regenerative slow energy recovery: Automatically recovers excess kinetic energy on long descents to reduce brake pad wear, extend driving range and cut operational energy consumption for converted vehicles.
• Standardized high/low voltage power on/off safety control: Automatic high-voltage self-check during power-up and discharge protection during power-down to avoid hazards including accidental energization and electric leakage.
• Real-time dashboard communication & visualization: Vehicle speed, motor power, system temperature and fault codes are synchronized to the on-board instrument panel in real time for visual vehicle status monitoring and rapid fault localization to streamline post-retrofit maintenance.

5. One-Stop Supply of Complete Matching Accessories to Resolve Retrofit Parts Matching Difficulties

Unlike suppliers that only sell standalone electric drive assemblies, Fengchuan Powertrain provides a full range of automotive-grade verified supporting hardware, eliminating the need for customers to source multiple vendors and conduct repeated compatibility testing, perfectly fitting fuel-to-electric conversion projects:

1. 

   Complete radiator system: Custom water cooling radiators, pipes and water pump assemblies with cooling interfaces precisely matched to the drive unit, all validated via high-low temperature and vibration durability bench tests.

   

2. Integrated high/low voltage wiring harnesses: Custom one-piece high-voltage power and low-voltage signal harnesses with foolproof connectors to prevent reverse wiring faults and fit original wiring layouts of converted fuel vehicles.

   

3. Optional integrated auxiliary drive modules: 2-in-1 / 3-in-1 / 4-in-1 auxiliary drive assemblies integrating PDU high-voltage power distribution, DCDC low-voltage conversion and OBC on-board chargers to simplify vehicle power distribution layout and reduce chassis wiring space occupation.

4. Full-process reliability validation: Radiators, wiring harnesses and auxiliary drive modules undergo complete automotive-grade testing including high-low temperature cycling, vibration durability, salt spray and voltage withstand. Units are ready for vehicle mounting directly upon factory delivery without additional customer verification, completely eliminating uncertainties such as mismatched parts and substandard operating conditions.

6. Full-Scene Vehicle Compatibility Covering Both New EV & Fuel Retrofit Markets

Leveraging its 320V high-voltage platform, dual power variants and independent suspension compatibility, this electric drive system fits mainstream light-duty new energy vehicles and fuel conversion models on the market: ▫️ 1.0T-2.5T Light-Duty Trucks (New / Retrofit): Electrification upgrades for urban-rural fresh produce delivery and building material short-distance freight, with sufficient heavy-load power from the high power variant. ▫️ A0/A00-Class Mini Passenger Cars (New / Retrofit): Fuel power replacement for urban family commuter vehicles and short-distance ride-hailing cars, delivering smooth, energy-saving performance via the low power variant. ▫️ Scenic & Campus Sightseeing Vehicles: Low-noise, zero-emission stable passenger transport within enclosed venues with simple maintenance requirements. ▫️ Mini & Small Electric Buses: Reliable power for high-frequency short-distance passenger transport in factories, scenic spots and residential communities with consistent climbing performance under full loads. ▫️ UTV All-Terrain Special Vehicles: Power support for venue off-roading and factory special operations, with flexible selection between low and high power versions.

7. One-Stop Full-Process Supporting Services from Fengchuan Powertrain

As a professional R&D and manufacturer of electric drive assemblies, we offer end-to-end implementation support for this 320V 3-in-1 integrated solution to OEMs and fuel-to-electric retrofit enterprises:

1. Bundled delivery of complete hardware packages: Customized full-set shipments including the 3-in-1 drive assembly, VCU, radiator, high/low voltage wiring harnesses and auxiliary drive modules for one-stop sourcing of all power and electronic control components.

2. Customized software calibration: Torque response, energy recovery and power output parameters are personalized and tuned based on vehicle load capacity, top speed, operating road conditions (mountain/plain) and original chassis parameters of fuel retrofit vehicles.

3. One-on-one technical after-sales support: Automotive-grade warranty system with professional engineers providing full follow-up for installation, commissioning, fault troubleshooting and vehicle calibration training, plus dedicated retrofit technical guidance for conversion projects.

4. Custom optimization for bulk orders: For large-volume vehicle/retrofit orders, housing mounting interfaces, cooling pipelines and power output curves can be fine-tuned to match exclusive chassis and retrofit solutions.

Conclusion

New vehicle development and fuel-to-electric conversion both demand an electric drive solution featuring high integration, easy installation, complete supporting parts and wide compatibility.

Fengchuan Powertrain’s 320V 3-in-1 integrated electric drive assembly FC1D120/FC1D260 integrates reducer, motor and MCU into a single unit with native compatibility for front and rear independent suspension layouts. Its dual power variants cover all commute, freight and passenger transport scenarios, paired with IP67 all-weather protection and one-stop matching VCUs, radiators, complete wiring harnesses and integrated auxiliary drive modules to drastically cut vehicle development, retrofitting and parts matching costs.

Whether for OEM forward development of brand-new vehicles or mini-truck, mini-van and mini-bus fuel-to-electric conversion projects by retrofit manufacturers, this highly integrated 3-in-1 electric drive enables fast mass production launch.

Please contact Fengchuan Powertrain’s sales team to obtain detailed 3D drawings, full calibration parameters, sample test evaluations and bulk quotation offers for cooperation negotiations!

📞 Contact Information

• Phone: +86 188-8191-8080

• WeChat: 188-8191-8080

• Email: md@fcdltech.com

• Address: High-Tech Industrial Park, Yibin City, Sichuan Province, China