Specifications and features of liquid-cooled high-voltage cables for vehicle equipment

China [CN]

Product description: Cables, as a bridge between power supply equipment and power consumption equipment, play a role in transmitting electrical energy. High-voltage wires and cables for new energy vehicles are mainly responsible for transmitting current from the battery end to the electric drive and various components, thereby providing a power source for new energy vehicles. The use environment of cables for new energy vehicles is very different from that of ordinary automotive cables. First of all, cables for new energy vehicles need to transmit high voltage and high current, and the voltage range must be 400V-1500V.

1. Specifications and features

Current carrying capacity:

The current carrying capacity of liquid-cooled high-voltage cables is significantly improved. For example, some models of liquid-cooled cables can achieve a maximum current of 600A, far exceeding traditional cables.

By adopting liquid cooling technology, the cable can maintain a low constant temperature during the charging process, thereby overcoming the thermal damage to the cable and charging equipment caused by heating, and increasing the DC charging current.

Structural design:

The cable structure is exquisitely designed. For example, the main power line and ground wire often use bare copper wire stranded conductors, while the auxiliary power line and control line may use bare copper wire stranded conductors of different specifications.

There is a special coolant circulation channel inside the cable, and the coolant circulation is driven by the power pump to achieve efficient heat dissipation.

Insulation and materials:

The insulation materials of the cable are mostly made of high temperature resistant and aging resistant materials, such as silicone rubber, which has a temperature range of up to -200℃, ensuring that the cable is not easy to age during long-term use.

The coolant pipeline material must also have good high temperature resistance and high strength characteristics. For example, if thermoplastic polyester elastomer is used, the tensile strength can reach 60MPa.

Safety and durability:

Liquid-cooled high-voltage cables have good low-smoke flame retardant properties when burning, which can effectively reduce the risk of fire.

Cable sheaths are mostly made of wear-resistant and tear-resistant materials, such as thermoplastic polyurethane elastomer (TPU), to improve the durability and safety of the cable.

Lightness:

The liquid cooling system can be designed more compactly, so that the cable can maintain high performance while reducing the volume and weight, which is conducive to improving the overall energy efficiency and handling performance of electric vehicles.

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