Test standards are divided into national standards, international standards, industry standards, and enterprise standards.
National standard:
1) GB/T 18488-2015 electric vehicle motor and controller thereof
2) GB/T 2423 Basic environmental test procedures for electrical and electronic products
3) Environmental conditions and tests for electrical and electronic equipment of GB/T 28046 road vehicles
4) GB/T 29307-2012 Drive motor system reliability test method for electric vehicles, GB/T 4208-2017 shell protection class (IP code)
International standard:
1) ISO 16750 Road vehicles-Environmental conditions and testing for electrical and electronic equipment
2) ISO 19453 Road vehicles-Environmental conditions and testing for electrical and electronic equipment for drive system of electric propulsion vehicles
3) ISO20653 Road vehicles – Degrees of protection (IP code) – Protection of electrical equipment against foreign objects, water and access
4) IEC 60068 Environmental testing
Industry standard:
1) QCT 413-2002 Basic technical conditions of automotive electrical equipment
2) QCT 1022-2015 pure electric passenger car reducer assembly technical conditions
3) QCT 1069-2017 Permanent magnet synchronous drive motor system for electric vehicles
4) LV123 Electrical characteristics and electrical safety of high voltage components in road vehicles – Requirements and tests
5) LV124 Electric and Electronic Components in Motor Vehicles up to 3.5 t – General Requirements, Test Conditions and Tests
Enterprise standards: in principle, enterprise standards are more stringent than national standards, international standards, and industry standards, and their products are guaranteed.
Test item classification: general test, safety test, performance test, environmental adaptability test, reliability and durability test, capacitor compatibility test, NVH, etc
General test: mainly appearance, quality, tightness, size, electrical performance test
Appearance: Before the test, the appearance will be checked for scratches and rust, which is a must check before the test.
Quality: Before testing, the quality of a single piece should be measured.
Size: Size measurement to see if it meets our product design standards. The dimensions are measured using a coordinate survey. Ah, there is another, there is a sealing: sealing experiment, can be divided into two categories, one is the water channel air tightness, and one is the cavity air tightness, the inverter will produce a lot of heat when working, which requires the inverter heat dissipation design, so there are two water pipes on the inverter, one is the inlet water pipe, one is the outlet water pipe. To measure the tightness of the inverter cooling hydrograph.
Electrical performance: insulation resistance, voltage resistance, stator turn to turn voltage resistance, partial discharge, breakdown voltage.
The electrical performance test is a must-check item before the test to ensure that the motor insulation performance is intact.
Safety test
The safety test is divided into: safe grounding, controller support capacitor discharge time, controller over speed protection/over current protection/over temperature protection, sensor short circuit, open circuit fault protection, revolution monitoring fault protection, communication timeout fault protection.
Performance test
Performance tests are divided into: RPM torque characteristics, sustained torque/power, peak torque/power, efficiency, maximum operating revolutions, torque/speed control accuracy, operating voltage range, lock-in torque, temperature rise, overspeed.
Environmental adaptability test
Environmental adaptability test includes: high/low temperature storage/operation, temperature cycle, alternating wet and heat cycle, steady state temperature and humidity, temperature shock, dust proof, waterproof, rain test, ice water thermal shock, salt spray corrosion, mixed gas corrosion
Vibration
Vibration is divided into: sweep vibration, random vibration, mechanical shock
Post time: Sep-30-2024
