Answers to the specification requirements of electric vehicle charging cables

On the basis of ensuring good insulation performance, electric vehicle charging cables should have high heat resistance and aging resistance, and at the same time, they should have good low-smoke flame-retardant properties when burning to ensure that losses and injuries are minimized .

 

At present, the production and manufacture of electric vehicle charging cable products are mainly based on the American ANSI/NFPA/NECArticle400, the European harmonized document HD22, etc. The vast majority of charging cable products in my country are based on the IEC60245 and IEC60227 standards issued by the International Electrotechnical Commission (IEC). The two standards are equivalent to the national standards GB/T5013 and GB/T5023 as the reference. The Article400 charging cable standard in the United States was formulated relatively early, mainly relying on the product standard established by the UL62 flexible cable standard of UL company in the United States. The insulating materials specified in the standard include polyvinyl chloride (PVC), thermoplastic elastomer (TPE), polypropylene Ethylene (EPR) and other materials, sheath materials include PVC, chlorinated polyethylene (CPE), TPE and other materials, there are many types of materials and models in the standard, and the specific structural parameters are mostly consistent with UL cable products. It is relatively broad, and there are no strict restrictions on materials and structures, as long as it can meet the basic performance requirements of the charging cable.

 

Electric vehicle charging cable products produced and manufactured in Europe are mainly manufactured in accordance with the European standard harmonization documents HD22.4 and HD22.12. HD22.4 specifies ethylene-propylene rubber insulated and ethylene-propylene rubber/neoprene rubber and its equivalent mixture sheathed flexible cables with rated voltage of 450/750V and below, HD22.12 specifies heat-resistant ethylene-propylene rubber with rated voltage of 450/750V and below Insulated and sheathed flexible cables of ethylene propylene rubber/neoprene and equivalent mixtures.

 

Since the use requirements of electric vehicle charging cables are different from those of traditional wires and cables, the current wire and cable standards are difficult to cover all the use requirements of charging cables. Therefore, it is necessary to formulate independent charging cable product standards to promote the healthy development of the industry.

 

The industry standards fully refer to the requirements of GB/T25085-2010 and GB/T25087-2010, while Ogilvy's years of experience in high-voltage line products in the car and the specific environment where the products are used, while referring to the two standards, it also refers to GB/T12528-2008 rated 1500V AC rail locomotive standard and CQC-1103~1105 charging cable standard. Mainly for withstand voltage, insulation volume resistivity, flame retardant, tear resistance, softness, etc. Made higher Require.

 

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