Product Series

Automotive high-voltage harness

The high-voltage harness is the primary carrier for power transmission in electric vehicles and is one of the critical components that ensure both vehicle performance and safety. The main function of the in-vehicle high-voltage harness is to supply high-voltage electricity to new-energy vehicles. In new-energy vehicles, it is considered a high-safety component, characterized by high voltage, high current, and a large number of thick-gauge wires.

Email:

ailsa.lin@yydzgf.com

Phone:

+86 18069625699

Still hesitating? Just get a sample and contact us!

Product Details

Product Name

PRODUCT Name

Automotive high-voltage harness

Product Categories

Product category

(1) High-voltage cable for power batteries: This refers to the wiring harness connecting the power battery to the high-voltage box.
(2) Motor controller cable: This refers to the wiring harness connecting the high-voltage box to the motor controller.
(3) Fast-charging harness: This refers to the wiring harness connecting the fast-charging port to the high-voltage box.
(4) Slow-charging harness: The harness connecting the slow-charging port to the on-board charger.
(5) High-voltage accessory harness (high-voltage harness assembly): This refers to the harness that connects the high-voltage box to the DC/DC converter, on-board charger, air-conditioning compressor, and air-conditioning PTC.

Wire material

Wire material

XLPE TPE EPDM

Product Performance Requirements

Product performance requirements

(1) Electrical Performance: In electric passenger vehicles, high-voltage cables primarily serve to transmit energy—delivering power from the battery to various subsystems. Therefore, the high-voltage wiring harness designed for electric passenger vehicles must be capable of handling high voltages and large currents.
(2) Shielding: During operation of electric vehicles, the repeatedly varying electrical loads and the extensive use of variable-frequency technology in the system cause drastic fluctuations in wire harness voltage, current, and frequency, resulting in significant electromagnetic interference. Typically, high-voltage connectors are 360° shielded, and high-voltage cables are all equipped with shielded cables.
(3) Mechanical Performance: Due to the relatively large diameter of high-voltage cables used in electric passenger vehicles, special routing considerations are required—specifically, the high-voltage harness for electric passenger vehicles is routed externally. Therefore, the high-voltage harness for electric passenger vehicles must be designed with mechanical protection as well as dust- and water-resistant features.
(4) Durability: The high-voltage wiring harness should exhibit excellent resistance to temperature, weather conditions, corrosion, vibration, and cable abrasion. It must also feature a substantial safety margin and a long connector lifespan to ensure the vehicle’s reliable and long-term operation. To enhance the service life and quality of the high-voltage wiring harness, the connection between high-voltage cables and high-voltage connectors should be reinforced. A locking mechanism should be employed for connections between high-voltage connectors, and the wiring layout should be optimized. Furthermore, wear-resistant materials should be selected for the high-voltage wiring harness components.