Jing-Jin Electric Oil-Cooled Hairpin Motor Platform Debuts

Jing-Jin Electric Oil-Cooled Hairpin Motor Platform Debuts

Jing-Jin Electric oil-cooled hairpin motor platform made its debut at IAA Transportation 2026 in Hanover, Germany, where Jing-Jin Electric Technologies Co., Ltd. presented the system for heavy-duty commercial vehicles. The platform uses the company’s in-house-developed Super Oil Cooling technology, which directs coolant toward high-temperature areas close to the motor windings. This approach is designed to improve thermal management during demanding operating conditions while supporting sustained torque output. The announcement positions the platform as the basis for several motor and integrated drive products intended for heavy-duty commercial vehicle applications in Germany.

Thermal Management and Motor Efficiency

The oil-cooled platform can deliver continuous torque of up to 90% of its peak torque, according to the company’s announcement. Its motor uses multi-layer balanced hairpin windings, high-performance permanent magnets, and low-loss electrical steel sheets. Together, these design elements support a maximum efficiency of more than 98%. By directing coolant closer to areas that experience high temperatures near the windings, the Super Oil Cooling system is intended to manage heat where it is generated, helping the motor maintain a high level of torque over sustained operating periods.

Expanded Motor Platform Applications

At IAA Transportation 2026, Jing-Jin Electric Technologies Co., Ltd. also outlined additional products that will use the same motor platform. These include drive motors, range-extender motors, and two-in-one integrated motor and controller units. The product strategy extends the underlying platform beyond a single motor configuration and provides a common technical base for multiple heavy-duty commercial vehicle applications. The range-extender motor offering also broadens the platform’s potential use across vehicle architectures that require an onboard power-generation component to support propulsion or extend operating range.

Integrated Motor and SiC Controller Design

The two-in-one integrated unit combines the motor with a high-power silicon-carbide, or SiC, controller and inverter brick. According to the announcement, this integration reduces system weight and removes the need for three-phase cables between the motor and controller. Eliminating those separate cable connections can simplify the physical arrangement of the powertrain system while reducing components associated with the connection between the motor and controller. The integrated design therefore represents a further application of the platform beyond motor efficiency and thermal performance, with system-level integration also forming part of JJE’s product approach.

Commercial Vehicle Applications

The unveiling gives Jing-Jin Electric Technologies Co., Ltd. an opportunity to present its motor technology directly within the heavy-duty commercial vehicle industry at a major transportation-focused event. The company’s stated performance figures center on sustained torque capability, high peak efficiency, thermal control, and integrated power electronics. The combination of these characteristics could be relevant to commercial vehicle manufacturers evaluating ways to manage motor heat, packaging, weight, and electrical-system complexity. Future adoption will depend on how the platform performs in vehicle-level applications and how manufacturers assess the resulting system benefits.

Industry Impact & Outlook

The platform’s combination of direct oil cooling, sustained torque capability, high efficiency, and integrated SiC power electronics addresses several engineering considerations for heavy-duty commercial vehicle powertrains. For manufacturers, the potential relevance lies not only in motor performance but also in system weight, packaging, and the removal of three-phase cables between the motor and controller. JJE’s planned range of drive motors, range-extender motors, and integrated units could allow the underlying technology to serve multiple vehicle configurations. The next significant consideration will be vehicle-level validation and manufacturer evaluation of these claimed performance and integration benefits.

Frequently Asked Questions

What did Jing-Jin Electric unveil at IAA Transportation 2026?
Jing-Jin Electric unveiled an oil-cooled hairpin motor platform for heavy-duty commercial vehicles at IAA Transportation 2026 in Hanover, Germany, with an emphasis on thermal management and sustained torque capability. The platform uses JJE’s in-house-developed Super Oil Cooling technology to direct coolant toward high-temperature areas near the motor windings. The motor can provide continuous torque of up to 90% of peak torque and reaches maximum efficiency above 98%. Its design includes multi-layer balanced hairpin windings, high-performance permanent magnets, and low-loss electrical steel sheets. JJE also plans drive motors, range-extender motors, and two-in-one motor and controller units using the same platform.