Application scenarios and functional attributes of new energy vehicle wiring harness Dec 19, 2023

New energy vehicle wiring harness, this seemingly insignificant component, is an indispensable part of new energy vehicles. Like the nerves of the human body, it spreads throughout every corner of the vehicle and is responsible for transmitting various signals and energy. According to its function and connection in the vehicle, new energy vehicle wiring harnesses can be divided into a variety of types, each type has its own unique characteristics and application scenarios.


Just like the urban transportation network, the new energy vehicle wiring harness also has a complex distribution and composition. Different car modules are like different urban areas, and the car wiring harnesses required are also different. Just like roads, some wiring harnesses are responsible for transmitting important traffic information, while others are responsible for delivering energy and ensuring the proper operation of vehicles.


Let's take a closer look at several common classifications of new energy vehicle wiring harnesses. According to its function, the wire harness can be divided into high voltage wire harness and low voltage wire harness. The high-voltage wiring harness is mainly responsible for transferring high-voltage electric energy to provide energy for the motor and battery of new energy vehicles; The low-voltage harness is responsible for transmitting various control signals to ensure the normal operation of the vehicle.


In addition to the function, the wiring harness connection is also an important basis for classification. Common connection methods include welding, crimping, and splicing. Each connection has its own unique characteristics and usage scenarios. For example, the welding wire harness has high strength and stability, and is suitable for parts that need long-term stable operation; The crimped harness has the characteristics of high efficiency and convenience, and is suitable for the parts that need quick connection; The plug-in cable harness is flexible and can cope with a variety of complex connection needs.


The above is only a few common classification methods of new energy vehicle wiring harness, in fact, there are many other classification methods and standards. Different classification methods can give us a deeper understanding of the characteristics and application scenarios of wire harnesses, and provide us with more reference and help in the design, production and maintenance process.


New energy vehicle harness types

1, Power Cable Harness: with dry transmission of high power, connect the battery pack, motor,(or motor), electronic control unit (ECU) and other power system components. Power harness usually includes high-voltage cables, battery connection wires, motor connection cables, etc., which carry the power transmission task of electric vehicles.

2, Signal Wire Harness: used to transmit data, communication signals and control signals, used to connect a variety of sensors, ECUs, displays, vehicle communication systems, etc. These signals are used to monitor and control information such as battery status, motor performance, charging status, etc.

3, Sensor Wire Harness: specially used to connect various sensors, such as temperature sensors, speed sensors, position sensors, etc., to monitor the state of the vehicle and provide feedback to the control system. Sensor harnesses typically include lighter weight wires and connectors.

4, Charging Wire Harness: For electric vehicles, the charging harness is used to connect the charging plug, charging controller and battery charging interface. They take on the task of charging electric vehicles.

5, Auxiliary Wire Harness: generally used to connect other vehicle systems, such as air conditioning system, sound system, lighting system, etc. The auxiliary wiring harness consists of internal and external circuit connections


New energy vehicle harness types

Wiring harnesses are also divided into high voltage wiring harnesses and low voltage wiring harnesses, which are mainly used in these positions of automobiles

High-Voltage wiring Harness and Low-Vltage wiring Harness: According to the voltage level, the harness can be divided into high-voltage and low-voltage harness. High voltage harnesses are mainly used to transmit high voltage (usually battery voltage), while low voltage harnesses are used to transmit lower voltage signals and power supplies.


New energy vehicle wiring harness Types

Summary: The selection and application of wire harnesses vary depending on the function used. Low-voltage harnesses are required in some locations, while high-voltage harnesses are required in others, and even high temperature and corrosion resistance are required in specific locations. In addition, some positions require thick, large square harnesses, while others require ultra-thin, short harnesses. The above is the classification of automotive wiring harness modules.

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