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Verification Advantages Production Management Development Process

Leading Verification

General and safety tests

Mechanical strength of controller casing Sealing of cooling circuit Water resistance of cooling circuit Cold state DC resistance of stator winding Airtightness test Insulation resistance Voltage resistance Safe grounding Over-speed test Active discharge time Passive discharge time Protective function
Electric load test

Voltage range of DC power supply Long-term overvoltage test Short-term overvoltage test Superimposed AC voltage Slow drop and rise of power supply voltage Instantaneous drop of supply voltage Reset characteristic Reverse voltage test Single-line disconnection Multi-line disconnection Signal short-circuit test
Performance test

Operating voltage range Torque-speed characteristic Temperature rise Peak torque and power Continuous torque and power Locked-rotor torque Maximum operating speed No-load back electromotive force Efficiency and high efficiency zone Speed controller accuracy Torque control accuracy Speed response time Torque response time Continuous operating current of controller Short time operating current of controller Maximum operating current of controller Feed characteristics
Environmental reliability test

High- and low-temperature storage High- and low-temperature operation Temperature cycling Temperature shock Damp heat cycle Constant damp heat Temperature gradient Frequency sweep vibration Random vibration Mechanical shock Salt spray test Protection class IP67/IP68/IPX9K Reliability and durability test
Other tests

EMC NVH

Workshop Validation

Introduction to production line and workshop

Our production line is a plane circulation type automated assembly line, and Kilews electric screwdrivers are used to collect process torque data, etc.
Test bench

Rated power: ≤60kW

Peak power: ≤120kW

Peak time: ≤60S

Test time: 8-10min

Torque range: ≤500N·m

Speed range: ≤12,000rpm
Circuit board aging room

Operating temperature: room temperature ~ 110°C

Heating power: 54kW

Temperature fluctuation: blasting

Power: 0.75kW

Temperature control mode: intelligent control

Test time: 48h
Leakage detector

Test item: water channel airtightness detection

Test item: complete-unit airtightness detection

Test time: 2-3min
Functional testing cabinet

Test item: rotary transformer test

Test item: IO test

Test item: voltage and current

Test item: vehicle communication test

Test time: 2-3min
Dynamometer bench

Rated power: 250kW

Rated torque: 500N·m

Peak speed: 16,000rpm

Power supply: 24V~1,200V

Test chamber temperature: -50°C~150°C

Cooling water temperature: 10°C~90°C
Insulation and voltage resistance tester

Resistance test: 20mΩ-20kΩ

Test speed: 2.5-10 times/second

Accuracy: ± 0.1% + 2

Display mode: resistance value or percentage

Test time: 1min