Safe and intelligent electric vehicle charging device and control method thereof

Abstract

The invention relates to the field of electric vehicle charging, in particular to a safety intelligent electric vehicle charger and a control method thereof. According to the scheme, the safety intelligent electric vehicle charger comprises an electric vehicle interface, an ARM (advanced RISC machines) master control unit. The ARM master control unit is connected with an intelligent charge billing module, an RFID (radio frequency identification) card recognition module, a man-machine interaction module, an electrical protective module and a remote communication module. The ARM master control unit, the intelligent charge billing module, the RFID card recognition module and the man-machine interaction module are in ARM architectures. The safety intelligent electric vehicle charger has the advantages that the charger is capable of accurately judging accidents and quickly responding in case of various accidents and capable of independently handling problems of an operating device in a short time, accidents are reduced, loss caused by the accidents is reduced to the maximum extent, and operation of a power grid is safer and more economical; the charger is functionally and modularly set, and accordingly, the functional structure of the charger can be managed and technological development is easier.

Description

Technical field [0001] The invention relates to the field of electric vehicle charging, in particular to a safe and intelligent electric vehicle charging device and a control method thereof. Background technique [0002] With the current shortage of fuel (non-renewable resources), it is necessary to find a new kind of energy to supply people's living consumption (including cars, etc.), while solar and wind energy are our biggest clean energy sources, inexhaustible. The key to continuous use lies in how to develop and utilize, and at the same time respond to the national call for the development and application of new energy, formulate specifications, provide technical support and program guidance for the future popularization and utilization of new energy. With the rapid development of electric vehicle charging piles, how the charging devices operate safely and reliably, and provide users with safe and reliable charging services have attracted more and more attention. There are ...

AI Technical Summary

Problems solved by technology

[0003] 1. Intelligent identification and adaptation of different batteries: Since the manufacturers of charging vehicles are different, the batteries of electric vehicles produced by each manufacturer are also different. At present, the charging piles on the market lack a unified standard, and the intelligent identification and automatic identification of different batteries cannot be realized. adapt

[0004] 2. High power factor and stability of output current and voltage: Due to the lack of necessary hardware protection measures and corresponding safety protection measures for the current charging devices on the market, there will be high power factors in the charging device during the charging process. And the phenomenon of current and voltage instability during charging

[0005] 3. The control strategy and method of fast charging: different charging methods of charging devices will lead to different charging effects

Since charging piles mostly adopt high-current fast charging method, if the battery is not stopped in time after it is fully charged, the battery will become hot, and excessive charging will seriously damage the life of the battery. Therefore, how to choose a good charging control strategy has a great impact on the battery. influences

[0006] 4. Non-serialization and modular development of charging device products: In an integrated product structure, the functions of components and product functions are in a many-to-many relationship, so that the design change of a certain component will affect the many-to-many relationship of the product. A function will also lead to the modification of parts with an uncertain scope. Similarly, in order to improve a certain function of the product, it will also lead to the modification of many parts.

As product complexity and product component reuse increases, managing such product structures and related information becomes difficult

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