What is the charging technology of charging piles

China [CN]

The development of electric vehicles is an important component of the development of new energy. For an electric vehicle, battery charging equipment is one of the indispensable subsystems. Its function is to convert the electrical energy of the power grid into the electrical energy of the on-board battery of an electric vehicle. There are different methods for classifying electric vehicle charging devices, which can be generally divided into on-board charging devices and off-board charging devices. Whether from the perspective of industrial transformation or energy strategy, the future prospects of charging pile cables are broad.

Onboard charging device refers to a device installed on an electric vehicle that uses a ground AC power grid and on-board power supply to charge the battery pack, including an on-board charger, an on-board charging generator set, and a running energy recovery charging device. An AC power cable with a plug is directly inserted into the charging socket of the electric vehicle to charge the battery. The vehicle charging device usually uses a contact charger with a simple structure and convenient control, and can also be an inductive charger. It is designed completely according to the type of on-board battery, with strong pertinence. Off-board charging devices, that is, ground charging devices, mainly include dedicated chargers, dedicated charging stations, general-purpose chargers, charging stations for public places, etc. It can meet various charging methods of various batteries. Generally, off-board chargers have large power, volume, and weight to accommodate various charging methods.

The charging pile cable is a vehicle charging and discharging early warning control system with control signal transmission functions such as transmitting electric energy, charging saturation prompt, safety warning, etc.

The charging pile cable comprises a cable core formed by forming a main line core, a center line, a high temperature warning core, and a control signal core. The hollow part of the cable core is filled with TPE rubber filler strips, and the outer sheath layer is extruded outside the cable core; The high temperature warning core is a temperature sensing iron wire; The control signal core consists of at least two insulated control wire cores twisted in pairs and wrapped with polyester tape, then woven with a shielding layer and extruded with a control wire sheath.

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