1. Product category and key parameters
· Product category: Electric vehicle electric drive system assembly-dual motor products
· Speed parameters:
· Maximum speed: 3000 r/min (wheel end)
· Speed control accuracy: ±1 r/min
Torque parameters:
· Maximum torque: ±5000 Nm (single side)
Torque control accuracy: ≤±0.2% FS
· Torque measurement accuracy: ≤±0.05% FS
2. Main functions of the equipment
1. Oil filling and oil management
· Accurate control of oil injection volume (±0.1L), equipped with a flow meter and circulating filtration system.
2. Torque and speed test
· Supports torque self-learning and accuracy testing, covering the entire working condition range (±5000Nm, 0-3000r/min).
3. NVH performance testing
· It has time domain, frequency domain, and order domain analysis functions, and vibration energy monitoring (the vibration energy of the bench is lower than the product ≥10dB).
3. Dynamometer parameters
Torque range: ±5000 Nm
· Speed range: 0-3000 r/min
· Control accuracy:
o Speed: ±1 r/min
o Torque: ≤±0.2% FS
· Data acquisition frequency: ≥1 kHz
· Brand model: Siemens 1PH8288 250KW.
4. Production capacity and beat
· Single beat: ≤864 seconds (about 14.4 minutes/unit)
· Change time: ≤2 hours
· Equipment failure rate: ≤5%
· Process capability:
· Critical equipment CMK≥1.67, CGK≥1.33
5. Core features of equipment
1. Data traceability and MES integration
· Seamlessly connect with the customer's self-developed MES system, realize the full process traceability of test data, process parameters, and material information, and support the automatic upload of test results to the server.
2. Integrated auxiliary equipment
· Auxiliary equipment includes: oil injection and weighing system; controller software brushing, oil pump ID brushing system; online pre-installed system.
3. Cooling and oil circulation system
· PID control of coolant flow (0-12L/min) and temperature (dome temperature to 65℃), the oil filtration accuracy meets ISO 4406 standards, and supports residual oil recycling and recycling.