Tongzhou Weipu MCy Oil-Cooled EV Test Temperature Control System
| Brand | Tongzhou Weipu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | MCy |
| Instrument Type | Integrated Circulating Chiller |
| Temperature Control Range | −40 °C to +150 °C |
| Cooling Capacity | 22 kW to 40 kW |
| Temperature Stability | ±0.5 °C |
Overview
The Tongzhou Weipu MCy Oil-Cooled EV Test Temperature Control System is an integrated circulating chiller engineered for high-fidelity thermal simulation in electric vehicle (EV) powertrain validation environments. Unlike conventional water-based chillers, the MCy employs a dual-stage heat exchange architecture: refrigerant → thermal oil → test loop oil. This design isolates the primary refrigeration circuit from the test fluid, eliminating corrosion risk, minimizing moisture ingress, and enabling stable operation across extreme temperature gradients—from cryogenic gearbox lubricant conditioning at −40 °C to high-temperature engine oil soak testing at +150 °C. The system is purpose-built for dynamic thermal load profiles typical of EV drivetrain component testing, including rapid ramp rates, sustained steady-state holds, and multi-step transient cycles required by ISO 16750-4, SAE J2380, and GB/T 18488.2 test protocols.
Key Features
- Integrated refrigeration and oil circulation architecture with hermetically sealed screw compressors and high-efficiency plate heat exchangers
- Wide operational range: −40 °C to +150 °C, maintained via PID-controlled expansion valves and dual-sensor feedback loops (inlet/outlet oil temperature)
- Cooling capacity scalable from 22 kW to 40 kW at 20 °C ambient, optimized for high-viscosity synthetic oils (e.g., PAO, ester-based EV transmission fluids)
- ±0.5 °C temperature stability over 24-hour continuous operation—verified per ASTM E740 calibration traceability procedures
- Stainless steel fluid reservoir and piping (316L), compatible with MIL-PRF-23699, Dexron ULV, and Shell E75W-80 specifications
- Integrated safety interlocks: low-flow detection, high-pressure cutout, oil overheating protection, and refrigerant leak monitoring per IEC 61508 SIL 2 requirements
Sample Compatibility & Compliance
The MCy accommodates thermal testing of full-scale EV components—including e-axles, on-board chargers, battery thermal management modules, and dual-clutch transmissions—using standard SAE J1922-compliant oil circuits. Its oil-handling design conforms to ISO 8502-2 cleanliness standards for hydraulic systems and supports GLP-compliant test documentation when paired with validated data acquisition hardware. The unit meets CE machinery directive (2006/42/EC), RoHS 2011/65/EU, and EMC directive 2014/30/EU requirements. Refrigerant selection (R-513A or R-1234ze, depending on configuration) complies with EU F-Gas Regulation (EU) No 517/2014 and EPA SNAP Program guidelines.
Software & Data Management
The MCy integrates with industry-standard test automation platforms via Modbus TCP and EtherCAT interfaces. Its embedded controller logs timestamped temperature, flow rate, pressure, and compressor runtime data at 100 ms intervals, storing ≥30 days locally with optional cloud backup. All audit trails comply with FDA 21 CFR Part 11 requirements—including electronic signatures, user role-based access control, and immutable event logging. Optional LabVIEW and Python SDKs enable custom script integration for automated thermal profiling aligned with AVL PUMA, ETAS INCA, or dSPACE SCALEXIO test benches.
Applications
- Dynamic thermal cycling of EV reduction gearboxes under simulated urban/highway drive cycles
- Thermal soak validation of silicon carbide (SiC) inverter cooling plates using dielectric thermal oils
- Pre-conditioning of traction motor stator windings prior to insulation resistance (IR) and partial discharge (PD) testing per IEC 60034-18-41
- Calibration support for high-accuracy torque sensors operating in oil-immersed environments (e.g., Kistler 4503B)
- Environmental stress screening (ESS) of power electronics housings per MIL-STD-810H Method 502.7
FAQ
What types of thermal oils are compatible with the MCy system?
The MCy is validated for use with polyalphaolefin (PAO), polyol ester (POE), and silicone-based thermal fluids meeting ASTM D6920 viscosity classification and flash point >250 °C.
Can the MCy interface with existing test cell SCADA systems?
Yes—native Modbus TCP and EtherCAT support enables direct integration with Siemens SIMATIC, Rockwell FactoryTalk, and National Instruments VeriStand without gateway hardware.
Is remote monitoring and alarm notification supported?
Standard Ethernet connectivity includes SMTP-based email alerts and SNMP v3 trap forwarding for critical faults (e.g., flow loss, refrigerant undercharge).
Does the system include factory calibration documentation?
Each unit ships with NIST-traceable calibration certificates for temperature sensors (±0.15 °C uncertainty) and flow meters (±1.0% FS), compliant with ISO/IEC 17025:2017 requirements.
What maintenance intervals are recommended for continuous 24/7 operation?
Compressor oil analysis every 4,000 hours; refrigerant moisture and acidity testing every 12 months; full heat exchanger inspection per ISO 8502-3 at 24-month intervals.
