Battery 6.6kw On-board Chargers

High Lights of the Battery 6.6kw On-board Chargers

√ Automotive standard communication (CAN)

√ Wide range of input and output voltages

√ Galvanic isolation

√ Suitable for plug-in hybrid and EV

√ Built-in 12V independent auxiliary power supply for car BMS power supply

√ Constant power and constant voltage state automatic conversion, effective saving time

√ Fan cooling

√ IP67 protection (not including fans)

As a power electronic system, the Battery 6.6kw On-board Chargers is mainly composed of power circuit and control circuit.

The power circuit is composed of AC voltage regulator, transformer and power tube, and DC/DC converter is its important component.

The control circuit realizes serial communication with the power management, and controls the power drive circuit to output a certain voltage and current according to the demand.

The main parameters of the Battery 6.6kw On-board Chargers are input voltage range, output voltage range, charging power and conversion efficiency.

On-board chargers are divided into unidirectional and bidirectional.

Unidirectional on-board chargers only charge electric vehicles as a unidirectional power grid.

Bidirectional on-board chargers can charge electric vehicles with the power grid, and can also discharge to the external interface through electric vehicles, as an emergency or V2G power grid power regulation.

The Battery 6.6kw On-board Chargers is generally a two-stage circuit. The front stage is the PFC (Power Factor Correction) stage, which is the power factor correction link. It realizes the conversion of the AC voltage of the power grid into DC voltage and ensures that the input AC current and the input AC voltage are in phase. According to the actual design power requirements, multi-stage Boost circuits can be used in parallel for expansion; the rear stage is the DC/DC stage, which realizes the conversion of the PFC stage output DC voltage into the required charging voltage, realizes the constant current/constant voltage charging function, and ensures the electrical insulation between the AC high-voltage side and the DC high-voltage side. Similarly, according to the actual design power requirements, multi-stage DC/DC circuits can be used in parallel for expansion. In addition, the more common DC/DC stage circuit topologies are phase-shifted full-bridge and LLC.

Applications of the On Board Charger (OBC)

More details about this 6.6kw on-board chargers please contact our sale team, Thank you!

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