EV Charger

Electric Vehicle Supply Equipment (EVSE)

Embdes has developed a compact EV chargers or EVSE, to cater to slow / normal / fast charging needs for the electric vehicles. The solution shall be used as off-board charge system. The same solution shall be upgraded to meet various other charging requirements such as higher battery voltage, higher power, fast charging, etc. The design is modular and shall also be adapted for on-board in-vehicle charge solution as well. The hardware can be customized according to the customer requirements and OEM to meet various use cases.

EVSE is combined with state-of-the-art embedded systems, power electronics and control systems to cater to the need of modern electric vehicles for different types/modes of battery charging requirements. It measures and precisely regulates system voltage and current. Controller has protection capabilities to detect fault conditions and isolate the system & the EV thereby ensuring the safety of the ecosystem.

Low Voltage 3.3kW DC EVSE for 2/3/4 Wheeler Electric Vehicles

System Benefits:

The power stage shall be cascaded up to a 10kW (3.3kW x 3)
Support to scale the 48V power stage of the EVSE as per customer requirements
The mains AC is rectified to DC 380V by the PFC section. The GaN and SiC does the rectifier and boost converter functions. PFC section is controlled by MCU.
The DC-DC converter section steps down 380V DC to 48V DC for charging the Battery. DC-DC section is controlled by charge controller MCU.
The interface section connects the output charge coupler to the EV.

The Charger Specifications are as follows:

Input Voltage	Single phase 230V AC (+/- 15%)
Input Frequency	50Hz
Power Factor	>98%
Efficiency	>95%
Output Power	3.3kW
No. of Outputs	1
Nominal Output Voltage	35V DC to 54V DC
Output Current	70A DC
Intermediate DC BUS Voltage	380V DC
Overall Efficiency	>95%
Harmonics	THDv < 5% meets the standard of IEC61000-3-12
Switching Frequency	100kHZ (66kHZ PFC)
Output Connector	GB/T 20234.3
Conducted Emissions	within EN 55022 / CISPR 22 limits (EMI)
Charging Modes	Charging mode CC&CV
Communication	CAN
Charger & CMS	Protocol: OCPP 1.6 (Open Charge Point Protocol) Interface: Ethernet, 3G/4G
Protection	Reverse Voltage protection ESD protection Over Temperature protection Over Voltage protection Over Current protection Earth Leakage Cable Short Circuit protection Residual Current Protection EMI/EMC
Other Features	Manual emergency stop 3.5-inch Touch Info Display

High voltage 10kW DC EVSE for 4 Wheeler Electric Vehicles

System Benefits:

The power stage shall be cascaded up to a 30kW (10kW x 3)
Support to scale the 1000V power stage of the EVSE as per customer requirements
The mains AC is rectified to DC 750V by the PFC section. The GaN and SiC does the rectifier and boost converter functions. PFC section is controlled by MCU.
The DC-DC converter section converts 750V DC to 800V DC for charging the Battery. DC-DC section is controlled by charge controller MCU.
The interface section connects the output charge coupler to the EV.

The Charger Specifications are as follows:

Input Voltage	Three phase 415V AC (+/- 15%)
Input Frequency	50Hz
Power Factor	>98%
Efficiency	>95%
Output Power	10kW
No. of Outputs	1
Nominal Output Voltage	500V DC to 800V DC
Output Current	12.5A DC
Intermediate DC BUS Voltage	750V DC
Overall Efficiency	>95%
Harmonics	THDv < 5% meets the standard of IEC61000-3-12
Switching Frequency	100kHZ (66kHZ PFC)
Output Connector	GB/T 20234.3
Conducted Emissions	Within EN 55022 / CISPR 22 limits (EMI)
Charging Modes	Charging mode CC&CV
Communication	CAN
Charger & CMS	Protocol: OCPP 1.6 (Open Charge Point Protocol) Interface: Ethernet, 3G/4G
Protection	Reverse Voltage protection ESD protection Over Temperature protection Over Voltage protection Over Current protection Earth Leakage Cable Short Circuit protection Residual Current protection EMI/EMC
Other Features	Manual emergency stop 3.5 inch Touch Info Display

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