The classification of electric vehicle chargers is mainly as follows:
(1) It can be divided into DC charger and AC charger according to the current.
(2) It can be divided into high-power charger and low-power charger according to the difference in power.
(3) According to the different charging frequency, it can be divided into industrial frequency charger and high frequency charger.
(4) In addition, there are negative pulse chargers, three-stage chargers, transformer chargers, and switching power supply chargers.
Today, the most widely used electric vehicle charging is power frequency chargers and high frequency chargers. The characteristics of the power frequency charger are: large size, heavy weight, high power consumption, but reliable performance and cheap price; the characteristics of the high frequency charger are: small size, small weight, short charging time, high current discharge performance, efficiency High, with intelligent activation function, it is conducive to the full dissolution, penetration and diffusion of battery activated substances, the electrochemical reaction and concentration polarization are fully thorough, and the battery energy is basically fully activated and exerted, and its service life is extended. Silicon chargers cannot. The high-frequency charger truly reflects the characteristics of safe, fast, efficient and cost-effective charging technology.
In addition, with the advancement of science and technology and people's continuous in-depth research on charger technology, many new chargers have emerged at the historic moment, such as high-power intelligent high-frequency chargers, thyristor rectifier chargers, etc. On the basis of the original charger, they make up for each other's weaknesses, and have made great progress in terms of charging efficiency, charging time, charging safety protection, and charging automation management, representing the trend and direction of the future development of chargers.
