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• Time:2024-07-11

what is inside an ev charger?Electric vehicle chargers, especially on-board chargers (OBCs), have complex and sophisticated internal structures and can be mainly divided into the following parts:

I. Main circuit

Functional description: The main circuit is the core part of the electric vehicle charger, responsible for converting external AC power into DC power for charging the power battery.

Specific composition:

Power factor correction (PFC) module: The main function of this module is to improve the input power factor and suppress high-order harmonics, ensure the phase consistency of current and voltage, and reduce interference to the power grid.

DCDC converter (LLC module): This module further boosts and converts the DC power after PFC processing to meet the requirements of the power battery for charging current and voltage, and achieves electrical isolation.

II. Control circuit

Functional description: The control circuit is the "brain" of the electric vehicle charger, responsible for receiving signals, controlling the charging process, and monitoring the status of the charger.

Specific composition:

Sensor: used to monitor current, voltage and other parameters during the charging process.

ECU (electronic control unit): processes signals from sensors and controls the charging process according to preset algorithms.

IGBT drive: controls the switch of the insulated gate bipolar transistor (IGBT), and then controls the opening and closing time of the power device in the main circuit to achieve accurate current and voltage output.

3. Wiring harness and standard parts

Function description: Wiring harness and standard parts are used to connect the main circuit, control circuit, fixed components and circuit boards to ensure the electrical connection and mechanical structure of the entire charger are stable and reliable.

4. Other key components

Low-voltage auxiliary unit: provides a standard low-voltage power supply (such as 12V or 24V) to power other electrical appliances on electric vehicles (such as battery management system, thermal management system, automotive instruments, etc.) during charging.

Communication interface: such as CAN communication interface, used for CAN communication of electric vehicles or data exchange between battery management system and charger.

Safety protection device: including overcurrent protection, overvoltage protection, overheating protection, etc., to ensure the safety of electric vehicles and chargers during charging.

5. Charging indicator light

Function description: used to indicate the charging status, usually using different colors (such as green, yellow, red) to indicate different charging stages or states.

In summary, electric vehicle chargers contain multiple key components and complex control systems that work together to ensure that electric vehicles can be charged safely and efficiently. At the same time, with the continuous advancement of technology and the continuous development of the market, the performance and functions of electric vehicle chargers are also constantly improving and improving.

If you want to know more about "what is inside an ev charger", you can consult us online or by email (sales@hjlcharger.com).