Applications

1.Main components: The 6.6kW electric vehicle on-board charger is mainly composed of five parts: AC input port, power unit, control unit, low-voltage auxiliary unit, and DC output port.

2.Communication input port: responsible for receiving AC power from the power grid, with 7 pin ports and three types of connections.

3.Power unit: As a transmission channel for charging energy, it includes modules such as rectification and inversion, which convert AC power into DC power suitable for power batteries.

4.Control unit: The core part that precisely completes the conversion of electrical energy and provides protection functions by controlling the conversion process of the power unit.

5.Low voltage auxiliary unit: supplies power to on-board electrical appliances during charging.

6.DC output port: connected to the battery pack, providing a charging circuit for the power battery.

In addition, the 6.6kW car charger also includes auxiliary components such as radiators and fans to ensure stable operation of the charger. This topology enables the on-board charger to efficiently and safely charge the power battery of electric vehicles.

1. Power upgrade demand: With the increase of electric vehicle battery capacity, 6.6kW chargers are still mainstream, but they are insufficient in the face of higher charging demands. The market is developing towards high-power chargers ranging from 11kW to 22kW.

2. High voltage architecture transformation: Electric vehicle battery voltage is moving from 400V to 800V, requiring chargers to have higher voltage conversion capabilities. The 6.6kW charger needs to adapt to this change to ensure charging safety and efficiency.

3. Technological material innovation: The application of third-generation semiconductor materials such as silicon carbide (SiC) and gallium nitride (GaN) will improve the power density and energy conversion efficiency of chargers, reduce heat loss, and increase charging speed.

4. Intense market competition: The demand for new energy vehicles continues to grow, and high-power chargers have become the key to market competition. Major manufacturers are increasing their R&D investment to promote technological upgrades and product innovation.

In summary, the 6.6kW electric vehicle on-board charger market is facing trends such as power upgrades, high-voltage architecture transformation, technological material innovation, and fierce market competition.

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