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What are the requirements for charging electric cars?

Date:2019-09-09 16:04:59   Popularity:

What are the requirements for charging electric cars?

Electric vehicles rely on electricity to drive the car. Therefore, after using the electric car for a period of time, the battery needs to be charged without electricity. When it comes to charging the electric car, it has to mention the charging line of the electric car. The line requirements are briefly introduced.

Functional requirements Electric vehicle charging cable is a carrier for connecting electric vehicles and charging piles. Its basic function is to transmit electrical energy. However, with the development of charging technology, in order to better complete the charging process, communication between the electric vehicle and the charging pile is required, and automatic control is performed when necessary. Therefore, the charging process puts higher requirements on the charging cable. The charging cable not only needs to have the function of power transmission, but also needs to transfer the state and information of the vehicle and the power battery to the charging pile for real-time interaction, and charge under the necessary conditions. The action is controlled to complete the charging process safely and reliably.

Safety requirements At present, the safety of electric vehicles has become the focus of the industry. The charging and discharging process of electric vehicles, due to long time, high current intensity, high frequency of cable use, its safety should be highly valued. Electric vehicle charging cables should have high heat resistance and aging resistance on the basis of ensuring good insulation performance. At the same time, they should have good low-smoke flame-retardant properties during combustion to ensure that losses and injuries are minimized. .

Current status of current standards for the production of electric vehicle charging cable products are mainly American ANSI/NFPA/NECArticle400, European coordination document HD22, etc. Most of the charging cable products in China are IEC60245 and IEC60227 issued by the International Electrotechnical Commission (IEC) or The national standards GB/T5013 and GB/T5023 standards equivalent to the two standards are used as reference.

Since the use requirements of electric vehicle charging cables are different from those of conventional wire and cable, the current wire and cable standards are difficult to cover all the requirements of charging cables. Therefore, it is necessary to develop independent charging cable product standards to promote the healthy development of the industry. Considering the mechanical performance requirements, electrical performance requirements, safety, environmental protection and service life of charging cables, new low-smoke halogen-free flame retardant materials, polyester elastomers, polyurethane materials, etc. are more suitable for charging cables. Insulation materials and sheath materials have become the development direction of charging cable products.

Ogilvy's cables are closely related to the safety of electric vehicles. Omega's high-voltage lines and charging lines are one of the core components of the new energy vehicle safety system. Electric vehicle safety includes three aspects, the safety of power batteries, the safety of electric vehicles, and the safety of charging infrastructure. High-voltage lines and charging lines play an important role in the safety of the power battery and the safety of the charging infrastructure.