In the field of new energy vehicle industry, high-voltage connector is an extremely important component, which has been applied to the whole vehicle and charging facilities. The main application scenarios of high-voltage connectors on the vehicle are: DC, PTC charger for water heating, PTC for air heating, DC charging port, power motor, high-voltage wiring harness, maintenance switch, inverter, power battery, high-voltage box, electric air conditioning, AC charging port, etc.
Due to the diversity of the requirements for electric vehicle interfaces, more stringent requirements are put forward for connector performance. High insertion and removal times, current carrying capacity, heat resistance and seismic resistance are the key factors to be considered in product development. With the increasing power demand of the electric drive unit of new energy vehicles, higher and higher requirements are put forward for the working current and voltage of the connector. The traditional connection voltage is about 14V, while the voltage of the high-voltage connector of electric vehicles reaches 400-600V.
In the actual use of the process, the overheating or burning of the connector, signal interference and other situations are often encountered, to meet the harsh environment of the connector seal and stability. Connector enterprises will do some testing items to ensure the safety of the connector in use. The project mainly includes: 1, visual inspection, size inspection, contact holding force, exchange, crimping pull force, cable fixing; 2 Insert and pull out force, normal operation, bending; 3, contact resistance, insulation resistance, withstand voltage, temperature rise, over current; 4, electrical load; 5, vibration and impact; 6. Salt spray; 7. Simulation environment; 8, shell weather resistance; 9, chemical resistance reagent; 10. Shielding.
New energy vehicle high voltage connector in the selection of materials need to use new materials with high temperature resistance, in addition to the sealing, shielding and waterproof requirements are also higher than the traditional automotive connector, so the cost is relatively high than the general industrial connector.
Post time: Jun-11-2022