Requirements for material filler using EV charging cable

China [CN]

Due to the non-uniformity of the insulation core diameter of the electric vehicle charging cable, there will be a large gap when the cable is formed. In order to ensure the good appearance of the cable, we will add filler when cabling, making the cable more round and beautiful, and improving the bending resistance and strength of the cable.

According to more information, there are no special requirements for standard cables, mainly considering the temperature of materials, compactness of fillers, environmental requirements, production process, etc. The following series introduce the required production of cable fillers.

Characteristic requirements of charging cable filler materials:

According to the use characteristics of the electric vehicle charging cable, an example is given to illustrate that the selected filler material should have the following characteristics:

1. Good softness

The use environment of electric vehicle charging cable has high requirements on the bending performance of the cable, so the filler material should be selected with good flexibility, such as polypropylene mesh tear tape.

2. Good flame retardancy

The electric vehicle charging cable itself has high flame retardant requirements, and the filler materials should be selected with good flame retardancy. For cables with halogen-free requirements, the filler materials should also meet the halogen-free requirements. Common materials include glass fiber rope, inorganic paper rope, etc.

3. Good water absorption

The cable shall be waterproof during use, so the filling material must be non hygroscopic. Polypropylene mesh filling rope and glass fiber rope are good choices. Cotton thread, hemp rope and the like have strong water absorption and are not suitable for selection.

4 Small specific gravity

The smaller the unit length and weight of the cable, the better, easy to install and economical. Therefore, the filling material shall be the material with small specific gravity. The proportion of polypropylene mesh filling rope is only about 0.7, which is suitable.

For more EV Cable and electric vehicle High-Voltage cable, please visit OMG official website: https://www.omgevcable.com