The electric vehicle line is the blood vessel of the electric bicycle. Through this blood vessel, the power of the battery is output to the motor, control system, lighting signal system, and auxiliary system to drive and control the vehicle. The carrier of this blood vessel is the electric vehicle Wiring Harness.

power cord and motor cord. These two places are the core parts of the electric vehicle wiring harness. Before Haozhi Electronics produces the power wiring harness, the allowable current value has been determined to be less than 15a, including 15a. The cross-sectional area of the copper wire is 1.5 square millimeters, and the current value of the motor wire Larger, reaching above 15a and below 22a, the cross-sectional area of the copper wire is 2.0 square millimeters.

Control the lock wire of weak current. The current intensity of the Wire Harness here is not large, 1.0a-3.0a, so a cross-sectional area of 0.5 square millimeters is sufficient.

Lighting, horn, alarm wiring harness. The electronic horn is a warning sound component for safe driving. Almost all the horns used on electric vehicles are active. Similarly, after full research with customers, Haozhi Electronics gave the data as the current intensity of 1.0a-3.0a, so the cross-sectional area is 0.5 square millimeters.

Data communication harness. Here, the amount of current allowed to pass through the wire harness is the smallest, which is below 0.5a, and the wire diameter is 0.24 square millimeters. Obviously, this combination is enough for the signal transmission of various components of the electric vehicle. Generally speaking, if the wire diameter is higher than the value specified above, the resistance of the wire harness is too large, and the voltage on the wire harness will be very large when a large current such as starting the car passes through, which can reach more than 2v, causing the controller to enter the undervoltage prematurely. Protect. Let's take 36v as an example.

If the cross-sectional area of the wire harness is too small, its internal resistance will increase, which is equivalent to connecting a resistor in series. When the battery voltage is 36v and a current of more than 15a passes, according to Ohm's law, if the internal resistance of the wiring harness exceeds 0.1 ohm, the upper voltage will reach about 2v, and the voltage provided to the controller is only 34v; when the battery voltage drops to 33v When the voltage supplied to the controller is only 31v, the controller enters under-voltage protection, but the battery is not actually fully discharged.

The above is about the dynamics of electric vehicle wiring harness. If you want to know more news and product information of our company, please go to our official website for consultation. We also sell Wire Harness, Connectors, Custom Cable Assemblies, Automotive Wire Assembly, Customized Molded Cables and Connectors Overmolding.