Electric vehicle charging station --The Application Case of RF

With new energy vehicle (NEV) ownership exceeding 40 million units (2025 data), new energy EV chargers have become a "standard facility" in urban infrastructure, community supporting facilities, and highway service areas. Public fast chargers (60kW-180kW) can charge to 80% battery capacity in 30 minutes, while residential slow chargers (3.5kW-7kW) meet overnight home charging needs. Even logistics parks and scenic spot parking lots have deployed dedicated chargers in batches, forming a "vehicle-pile-network" connected charging ecosystem. The stable operation of all this relies on the precise internal hardware composition and support of key components.

The "Core Framework" of New Energy EV Chargers: Disassembly of Four Major Systems

Taking DC fast chargers as an example, new energy EV chargers mainly consist of four modules: power supply system, power conversion system, control and protection system, and communication system. Each system works in synergy through circuit boards:

·Power Supply System: Connects to the 380V three-phase grid power, responsible for introducing municipal electricity into the device, including basic components such as air switches and contactors;

·Power Conversion System: Centered on the AC-DC/DC-DC conversion circuit board, it is the key to converting "municipal electricity to vehicle battery-adapted voltage" and the main application scenario for passive electronic components;

·Control and Protection System: Composed of an MCU control board, current/voltage detection circuits, and overload protection circuits, ensuring "safe and precise" charging processes;

·Communication System: Uses 4G/5G or Ethernet modules to realize signal interaction between the charger, cloud platform, and vehicle BMS (Battery Management System), supporting remote monitoring and intelligent scheduling.

Key Application Scenario: Where Are Passive Electronic Components Used in EV Chargers?

For example ： Passive Components Ensure "Efficient Power Votage Conversion"

The power conversion circuit board is the "heart" of fast chargers, responsible for converting 380V AC to 200-750V DC (to adapt to battery voltages of different vehicle models). Our RF directional coupler was install in the board ， responsible for urge suppression" to prevent core chips from being damaged by sudden grid voltage rises .

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The benefits of choosing us include not only a wealth of application cases, but also finished products of the same specifications as international brands, as well as faster supply speed and quality inspection guarantee.