Bus high-voltage system integrated harness

The long-term allowable working temperature of the cable of road vehicle (electric bus) harness shall not exceed 125 ℃. If the standard ambient temperature is exceeded, the method of increasing the cross-sectional area of the cable shall be adopted to meet the environmental temperature requirements. Of course, beyond that. The high voltage harness of the whole vehicle (bus) also needs the tests of voltage resistance, insulation resistance, salt spray requirements, flame retardant requirements and harness tensile force requirements of other projects.

Corresponding preparations shall also be made for the design layout of the high-voltage harness of the whole vehicle. The main design scheme of the high-voltage harness of the vehicle involves the harness routing design, wire diameter design, high-voltage connector selection, charging port type and application, shielding design, high-voltage harness fixing clip selection, high-voltage trunking design, high-voltage interlocking HVIL design, etc. In the design of high-voltage system, considering the electromagnetic interference, the entire high-voltage system is completely covered by the shielding layer.

According to the characteristics of high-voltage harness, high-voltage harness is generally divided with high-voltage electrical appliances as the center, which can be divided into motor high-voltage wire, battery high-voltage wire, charging high-voltage wire, etc. The high-voltage line of the motor is generally the high-voltage line connecting the controller and the motor; The high-voltage line of the battery is generally the high-voltage line connecting the controller and the battery; The charging high-voltage line is generally the high-voltage line connecting the charger and the battery.


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