JEE Technology

JEE's platform-based multi-in-one integrated electric drive assembly for new energy vehicle electric drive systems further deeply integrates units such as the motor, motor controller, reducer and on-board power supply. With a platform-based design and wide performance coverage, it delivers high power density, a high proportion of high-efficiency operating range, small volume and light weight, achieving low cost and convenient vehicle installation.

Technical highlights: Platform-based: platform-based design with wide performance coverage; High efficiency: high power density and a high proportion of high-efficiency operating range; Low cost: small volume and light weight. Application prospects: suitable for A0-A class vehicles; bidirectional OBC supports V2L; charging power covers 3.3kW, 6.6kW and 11kW; supports 400A ultra-fast charging.

• A0-A class battery electric passenger vehicles
• Integrated on-board power supply applications supporting V2L external discharge
• Project case: JAC

A water-cooled e-axle assembly formed by pulling the traction motor, its inverter and the reducer into one housing. The three previously separate units share casting, cooling circuit and high-voltage interface, so axial length and jumper harnesses shrink considerably. The compact module makes packaging in the front and rear compartments easier and lets one carry-over layout cover front-, rear- and all-wheel-drive models, while low electromagnetic noise translates directly into a quieter cabin.

Layout: traction motor plus inverter plus reducer as a three-in-one e-axle assembly; peak power: 160 kW at 350 V bus; torque output: 3200 N·m at the wheels, 340 N·m from the motor; speed: 16000 rpm maximum, 5000 rpm rated; reduction stage: single-stage parallel-axis helical gears, ratio 11.5; efficiency: ≥93% peak, ≥88% over the CLTC cycle; cooling: water circuit with 65 °C inlet at 10 L/min; package: ≤85 kg, envelope ≤560×520×340 mm, IP67 rating

• Front/rear e-axle for battery electric passenger vehicles
• Project cases: Chery, Vinfast

JEE's oil-cooled three-in-one integrated electric drive assembly adopts an oil-cooling technical route and features low noise, intelligent control and high efficiency. The platform is compatible with both BEV and PHEV models, covers a 400V voltage platform, and supports compatible switching between IGBT and SiC power modules.

Technical highlights: Quietness: total noise level as low as 73dB; Intelligence: rotor temperature estimation, intelligent oil pump, active heating, harmonic injection; High efficiency: CLTC efficiency 89.57%; Safety: supports information security. Application prospects: the platform is compatible with BEV and PHEV; products cover a 400V voltage platform; suitable for A/B class vehicles; optional differential lock; maximum 60% gradeability; IGBT and SiC compatible.

• A/B class BEV battery electric passenger vehicles
• PHEV plug-in hybrid passenger vehicles
• Vehicles with optional differential lock and maximum 60% gradeability conditions
• Project case: Li Auto

JEE's two-in-one on-board power supply product integrates the on-board charger OBC and the DC/DC converter in a two-in-one design, offering small volume, light weight, high integration, high efficiency and a high coverage rate of automated processes, and supporting OTA upgrades; it can be adapted to a multi-in-one assembly for integrated applications, or packaged in its own housing as a standalone power supply application.

Technical highlights: two-in-one integrated design; high efficiency; high coverage rate of automated processes; small volume, light weight and high integration; OTA upgrades. Application prospects: can be adapted to a multi-in-one assembly for integrated applications; can be packaged in a separate housing for standalone power supply applications; OBC can be extended to 11kW.

• Integrated on-board charger OBC + DC/DC power supply for battery electric passenger vehicles
• Standalone on-board power supply for A00/A0 class micro electric vehicles
• Project cases: Chery Little Ant EQ1, JAC iEV4, JAC iEV5, JAC iEV6E, JAC iEV6EL, etc.

The JEE high power density drive motor is a permanent magnet synchronous motor developed by a professional electromagnetic, thermal, structural and NVH team. It offers the advantages of high power density, high torque density and high-speed operation capability, and can be used in combination with a high-ratio gearbox. With more than 10 years of continuous production and cumulative deliveries exceeding 200,000 units, it is reliable in quality and low in cost.

Motor type: permanent magnet synchronous motor; Features: high power density, high torque density and high-speed operation capability; can be used with a high-ratio gearbox; Mass production track record: more than 10 years of continuous production, cumulative deliveries exceeding 200,000 units, reliable quality and low cost.

• Drive motor for battery electric passenger vehicles
• Mass production track record / project cases: Honda VE-1, JAC Volkswagen Sehol, JAC iEV7S, Yudo π1, Yudo π3, etc.

An inverter aimed at the traction machine of battery-electric passenger cars. Power modules, DC-link capacitors, gate-drive board and control board all sit inside one compact enclosure, and a single control unit runs torque control, fault diagnostics and vehicle-level protection. That degree of integration pays off as freedom in engine-bay layout: raising the power rating on a given platform no longer forces a redesigned mounting interface, and automated assembly lines hold consistency from batch to batch.

Power density: ≥20 kW/L; supported bus: 250-450 V on 400 V platforms; output capability: 550 Arms peak, 250 Arms continuous; power ratings: 160 kVA peak, 80 kVA continuous; conversion efficiency: ≥98.5% at the best point; cooling: liquid-cooled base plate, coolant ≤65 °C; protection and ambient: IP67 sealed, -40 °C to 85 °C; proven volume: over 10 years in continuous production and more than 200,000 units shipped

• Motor controller (inverter) for battery electric passenger vehicles
• Mass production track record / project cases: Honda VE-1, JAC Volkswagen Sehol, JAC iEV7S, Yudo π1, Yudo π3, etc.