How to choose EV cable?

2022-07-26

The battery of a car is one of the core components of a new energy electric vehicle. Ordinary car batteries, also known as batteries, are used to convert chemical energy into electrical energy. The batteries we usually refer to are lead-acid batteries, which are mainly made of lead and its oxides and have a life cycle of 2 to 4 years. The car with automatic start-stop function has a dedicated battery with a lifespan of 5 to 6 years. New energy vehicles use lithium batteries, which have a longer working life. If they are used well, sometimes they can be used for 8 years without any problems. Let's take a look at how to use the car charging cable with the car editor of this station.

 

How to choose EV cable

 

EV cable introduction: demand

 

EV cable is a carrier connecting electric vehicles and charging piles, and its basic function is to transmit electrical energy. However, with the development of charging technology, in order to better complete the charging process, it is necessary to do a good job of communication between the electric vehicle and the charging pile, and to do automatic adjustment when necessary. Therefore, the charging process puts forward higher requirements for the charging cable. The charging cable must not only have the function of power transmission, but also transmit the status and information of the car and the power battery to the charging pile for real-time interaction. In this case, adjust the charging response so that the charging process can be completed safely and reliably.

 

The safety factor is required to be high, and the safety factor of electric vehicles has become the focus of the industry. Due to the long time, high current intensity and high frequency of cable use, the charging and discharging process of electric vehicles should be highly valued. On the basis of ensuring good insulation performance, EV cable should have high heat resistance and aging resistance, and at the same time, it should have good low-smoke flame-retardant properties when burning to ensure that losses and damage are minimized .

 

Introduction of EV cable:: Technical Standardization Analysis

 

The status quo of the specification is that the current EV cable products are manufactured on the basis of American ANSI/NFPA/NECArticle400, European harmonized document HD22, etc. The vast majority of charging cable products in my country are based on the IEC60245 and IEC60227 specifications issued by the International Electrotechnical Commission (IEC). The two standards are equivalent to the national standards GB/T5013 and GB/T5023 as reference. The Article400 charging cable specification in the United States was formulated relatively early, and the key relies on the product specification established by the UL62 flexible cable specification of the UL company in the United States. The insulating materials specified in the specification include polyvinyl chloride (PVC), thermoplastic elastomer (TPE), polypropylene (EPR) and other materials, sheath materials include PVC, chlorinated polyethylene (CPE), TPE and other materials, there are many kinds of materials and models in the specification, and the main parameters of the specific structure are basically the same as those of UL cable products. The specifications are relatively broad, and there are no strict restrictions on materials and structures, as long as they meet the basic performance requirements of the charging cable. The EV cable products produced and manufactured in Europe are mainly manufactured in accordance with the European Norm 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.

 

How to choose EV cable

 

The above is the demand for EV cable introduced by ZHONGZHEN NEW ENERGY Factory. Maybe you will not understand a little after reading this article. There are quite a lot of technical terms in the article. However, consumers are using electric vehicles. There is no need to worry about it when using it. Because of these professional knowledge, it will not matter when consumers use it. Consumers only need to follow the instructions for use and the guidance of professionals when using it.