As the global electric vehicle (EV) market continues to grow rapidly, powertrain systems are evolving toward integrated, all-in-one solutions. In particular, the eAxle—an integrated system that combines the electric motor, motor controller, and transmission—has gained significant traction among automakers. This configuration reduces size and weight, improves energy efficiency, and optimizes manufacturing costs, making it a core technology in electric drivetrains. Chroma has previously introduced the 1210 E-Propulsion Test System, a single-axis electric drivetrain test system for verifying integrated motor and controller systems. However, as technology and market demands continue to evolve, multi-in-one applications like the eAxle have become a key focus in the EV industry. As a result, greater emphasis is now being placed on the reliability, performance, and safety testing of these systems.

To meet the latest industry needs, Chroma is now launching the 1220 E-Axle Test System, covering the three core components of the eAxle: motor, motor controller, and transmission. Designed for low-speed, high-torque test scenarios, the system significantly enhances test efficiency, accelerates development cycles, and helps reduce product development risks. The Chroma 1220 can simulate real-world loading conditions and supports a wide range of international standards, including: 

• GB/T 18488-2015: Drive motor systems for EVs 
• GB/T 29307-2022: Reliability test methods for EV drive motor systems 
• CSAE 143-2020: Test and assessment specifications for integrated electric drive systems in BEVs 
• SAE J2907: Performance characterization of electrified powertrain motor-drive subsystems 
• ECE R85: Uniform provisions for determining rated power of ICEs and electric motors

▲System architecture of the Chroma 1220 E-Axle Test System

In terms of communication protocols, the 1220 system supports CAN, CAN FD, and EtherCAT, enabling seamless integration with existing architectures. In addition, the system is compatible with HIL (Hardware-in-the-Loop) simulation testing and supports the integration of various real-time vehicle models developed in Simulink. With dynamic load simulation and driving condition testing, it can replicate real-world driving scenarios such as high-speed driving, low-speed starts, and uphill driving. The system can also simulate speed differentials between left and right wheels during cornering at varying speeds. By combining differential wheel speed simulation technology with a dyno setup, the 1220 verifies the dynamic behavior of the eAxle system while ensuring that the testing process adheres to international standards. This integration of software and hardware validation enhances both the accuracy and flexibility of testing. In terms of usability, the highly customizable software supports both manual and automated testing. It allows for real-time data monitoring and generates comprehensive test reports, reducing manual workload and improving R&D efficiency.

   
▲User interface and sample test report

Through advanced testing technologies and highly integrated solutions, Chroma ATE helps automakers and supply chain partners accelerate EV technology development while ensuring product quality and market competitiveness. As the automotive industry embraces electrification, we remain committed to innovation, providing the industry with precise and efficient testing tools to drive the continued growth of the EV market.

For more information about this product, please visit the Chroma website and leave your inquiry and contact details. We'll be happy to assist you!