DOT TCEM Climatic Systems for e-Axle Testing for Industrelec / Stellantis France

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Il Disgelo developed for Industrelec, as part of a project for Stellantis in France, a supply consisting of four DOT TCEM climatic chambers dedicated to e-Axle testing.

The project includes two 2.9 m³ TCEM chambers and two 4.0 m³ TCEM chambers, the latter configured with Z-axis movement capability. The equipment was developed to integrate climatic conditioning directly with dynamometric test benches and with the mechanical, electrical and fluid interfaces required for testing electric drive systems.

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Developed solution

The chambers use a modular structure composed of two joinable half-shells, designed to simplify installation and access to the e-Axle and its related connections with the test bench.

The 2.9 m³ configurations are dedicated to testing with fixed geometry, while the 4.0 m³ versions offer greater usable depth and dedicated interfaces allowing different shaft positioning along the Z axis.

The system was designed to ensure:

• controlled climatic testing on e-Axle and electric drive systems;
• four dedicated testing stations;
• two 2.9 m³ configurations and two 4.0 m³ configurations;
• integration with dynamometers and test benches;
• Z-axis movement in the 4.0 m³ chambers;
• temperature and relative humidity control;
• thermal gradients up to 4 °C/min;
• management of the thermal load generated by the DUT;
• reinforced structure for stresses generated by motor torque;
• dedicated feedthroughs for shafts, wiring and fluid circuits;
• specific interfaces for water/glycol circuits;
• cycle programming and data logging through CliMaLogic®;
• connection with external systems via Ethernet, Modbus TCP/IP and CAN-ready interface.

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Main technical data

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DOT TCEM-40 – 2.9 m³

• quantity: 2;
• usable volume: approx. 2.9 m³;
• internal dimensions: 1695 × 1332 × 1300 mm;
• external dimensions: approx. 1995 × 2082 × 1650 mm;
• configuration: without Z-axis movement.

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DOT TCEM-40 – 4.0 m³

• quantity: 2;
• usable volume: approx. 4.0 m³;
• internal dimensions: 1695 × 1780 × 1300 mm;
• external dimensions: approx. 1995 × 2530 × 1650 mm;
• configuration: with Z-axis movement capability.

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Common performance

• temperature range: −40 °C to +90 °C;
• temperature accuracy: ±0.5 °C over time;
• heating rate: up to 4 °C/min;
• cooling rate: up to 4 °C/min;
• relative humidity: 20% to 95% RH;
• climatic operating range: +10 °C to +90 °C;
• humidity accuracy: ±1% to ±3% RH;
• allowable dissipation at −40 °C: 1.5 kW;
• reference DUT mass: 500 kg;
• approximate chamber weight: approx. 3900 kg;
• installed power: 80 kW;
• maximum power consumption: approx. 45 kW;
• power supply: 400 V ±10%, three-phase + neutral + earth;
• refrigerant: R449A;
• refrigeration unit: Dorin semi-hermetic compressor;
• control system: PLC with CliMaLogic® software;
• programming: up to 50 programs with 20 steps each;
• data logging: CSV export via USB;
• communication: Ethernet, VNC Viewer, Modbus TCP/IP and CAN-ready.

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Result

The project made it possible to create a platform consisting of four DOT TCEM climatic systems dedicated to e-Axle validation, capable of supporting different test-bench configurations and different electric drive system geometries.

The combination of 2.9 and 4.0 m³ chamber volumes, Z-axis movement capability, dedicated interfaces for shafts and fluid circuits, and integrated climatic control enables thermal and climatic tests to be carried out directly around the e-Axle system while maintaining full integration with the testing infrastructure.