Vehicle Power Supply-Shenzhen VAPEL Power Supply Technology Co.,Ltd.

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On-Board Charger (OBC) 20kW

This product is a 20kW three-phase four-wire vehicle charger with an input voltage range of 323-437Vac and a high-voltage output range of 330-554Vdc. It supports single-phase input with a voltage range of 187-253Vac, delivering a maximum output power of 6.6kW under single-phase input. It supports constant current charging, constant voltage charging, and constant power charging modes. Utilizing mature soft-switching technology internally, it features a compact structure, high efficiency,

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Technical Specifications

Project			Minimum	Typical	Maximum	Unit	Conditions
Environmental Conditions
Operating Temperature			-30		85	℃	Must be capable of starting at -40°C
Storage temperature			-40		105	℃
Relative humidity			5	-	95	%
Elevation			0		4000	m
Heat dissipation method			Water-cooled				Coolant inlet temperature ≤60°C; Flow rate 10-12 L/min
Ingress Protection Rating			IP67
Input Characteristics
Three-phase input	Rated Input Voltage		-	380	-	Vac	Rated frequency: 50 Hz
	Input Voltage Range		323		437	Vac	Frequency range: 45–60 Hz
	Maximum Input Current		-	-	34	A
	Input Current Control Accuracy		31.3	32	34.24	A	Minimum 0.98I_n;Maximum 1.07 I_n
	Input Current Control Accuracy		31.3	32	34.24	A	(Charging current < 15A (-0.5, +1.2A))
	Power factor			0.99			Rated input, output at half load and above
	Overall efficiency			95	-	%	Rated input, half-load output
	Inrush current				48	A	437Vac input, cold state
	Input current harmonic components				5	%	Rated input, output at full load
	Input Voltage Detection Accuracy		-2.5		2.5	%	Reported via CAN bus
Single-phase input		Rated Input Voltage		220		Vac	Rated frequency 50 Hz
Single-phase input		Input Voltage Range	187		253	Vac	Frequency range: 45–60 Hz
Low-voltage supply voltage range			8	24	32	V
Low-voltage operating current					2	A	Rated 24V
Output Characteristics
Rated Output Voltage				482		Vdc	1. Output voltage above 430Vdc: constant power at 20kW; Output voltage between 430Vdc and 320Vdc: output power linearly derated from 20kW to 10kW.
Output Voltage Range			330		570	Vdc	2. When the input voltage is below 370Vac, the output power begins to linearly derate. At an input voltage of 320Vac, the output power derates to 70% to ensure the input current remains below 34A.
Output Current Range			0		46.5	A	3. With single-phase input, the maximum output power is 6.6 kW. Below 220 Vac input, the output power begins to linearly derate to ensure the input current remains below 32 A.
Output rated power					20	KW
Output ripple and noise					4%Vo	V	The oscilloscope bandwidth should be 20 MHz, with probes connected in parallel to a 10μF capacitor and a 104Ω resistor.
Output rise time					5	s	Upon receiving the BMS startup command, the OBC output voltage increases from 10% to 90%.
Output fall time					500	ms	Upon receiving the BMS shutdown command, the OBC reduces output current to 10% within 300 ms and to 0 within 500 ms.
Output Voltage Regulation Accuracy			-1		1	%
Output Constant Current Accuracy			-5		5	%	Output current less than 1A is not required;

							Constant current accuracy ≤ ±50% at output currents of 1 to 5 A

							Constant current accuracy ≤ ±10% at output currents of 5 to 10 A

							When the output current is ≥10A, the constant current accuracy is ≤±5%.

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