1.8KW LiFePO4 On Board Charger

Here is the Charger designed for LiFePO4 Battery Pack.
the power of the charger is 1.8kw
There are different modules of the charger
48V25A LiFePO4 Charger
72V25A LiFePO4 Charger
96V16A LiFePO4 Charger
Weight of the Charger is only 1.8kg. its one of best Charger for your LiFePO4 Battery Pack

1. Overview

HK-H series 1.8KW charger was specially designed for supplying the electricity for electric vehicle’s power battery, on the basis of the national standards
for the charger. This product has the advantages of not only only high efficiency, small size, high stability, long lifespan, but also high protection grade,
and high reliability and complete protection function, etc. It’s definitely an ideal charging power supply for f electric vehicles.

This charger has built-in heat-sensing device and can automatic recover through the thermal protection. Fully sealed potting process and up to IP67
protection level ensures no causing trouble in any complex environment.

1.Key Feature:

Fully sealed potting process,				Work reliably under -35℃- +85℃
water cooling ( modular optional)
Built in thermal sensor				Cut off output under dangerous operations conditions
				(internal 95℃)
Protection level IP67				Work	safely in the short-term immersion conditions
2. Essential Parameter
	Input		Output			Max Output		Full-load
Hardware			Voltage				Power Factor
	Current					Current		Efficiency
			Range
48V25A	9A		18-68VDC			25A	≥0.99	≥93%
							(half-load more)
72V25A	9A		25-99VDC			25A	≥0.99	≥93%
							(half-load more)
96V16A	9A		34-132VDC			16A	≥0.99	≥93%
							(half-load more)

3. Features

Input		Frequency						45-65Hz
		Stand-by Consumption						≤5W
		Output Mode						CV / CC
		Output Power						1800W@220VAC 700W@110VAC
Main Output
		CV Accuracy					±1%
		CC Accuracy					±2%
		Ripple Voltage Coefficient					5%
Communication		CAN Communication						Yes
		Baud Rate						125Kbps、250Kbps、500Kbps
Function
		Terminal Resistance						N/A
	12V Output						Load Capacity of 200 mA, Output controllable
12V5A (Optional Output Function)
		Output Mode						Constant Voltage
		Output Voltage						13.8V
		Rated Current						5A
Low Voltage
		CV Accuracy						±2%
Output
		Maximum Current						5.5A±0.5A
		Output Power						≥62.5W
		Ripple Voltage Coefficient						1%

4.Protection function

Input Over-voltage Protection		AC270±5V
Input Under-voltage Protection		AC85±5V
Output Over-voltage Protection		Stop the output when exceeds + 1% of the maximum output voltage
Output Under-voltage Protection		Stop the output when below -5% of the minimum output voltage
Output Over-current Protection		Stop the output when exceeds + 1% of the maximum output current
Over-temperature Protection		Power down from 85 ℃ and turn off at 90℃
Short-circuit Protection		Stop Output
Battery Reverse Connect Protection		Fuse Burn-out
Ground Protection		≤100mΩ
CAN communication Protection		Automatically stop the output when CAN communication fails
Power-off Protection		Yes

5. Safety and others
		Input to Output：2000VAC≤10mA
Withstand Voltage		Input to Ground：2000VAC≤12mA
		Output to Ground：2000VAC≤10mA，all 1min
Insulation Resistance		Input, output, signal terminal to casing≥10MΩ
		Testing Voltage 1000VDC
Electromagnetic		GB/T 18487.3-2001	11.3.1
Immunity
Electromagnetic		GB/T 18487.3-2001	11.3.2
Abusive
Harmonic Current		GB   17625.1-2003	6.7.1.1
Inrush Starting Current		≤24A
Current-rise Time		≤5S，Overshoot≤5%
Close Response time		100%到 10%≤50mS，100%到 0%≤200mS
Protection Level		IP67
Vibration Resistance	10－25Hz Amplitude1.2mm，25－500Hz 30m/s2，8hrs per direction
Noise		≤60dB(A Level)
MTBF		150000H
Work Environment		Relative Temp 5%-95% No condensation
Working Temperature		-35℃ ~ +85℃
Storage Temperature		-55℃ ~ +100℃

6. Installation size, label requirements and interface definitions

1). Installation size,Label

 

         Label ( based on the actual situation)

2). Interface Definitions

7. LED status

1). Initial State

Red Off Green Off Red Off Green Off Red Off Green Off Red Off Green Off

2). Charging State

Red Off Red Off Red Off Red Off Red Off Red Off Red Off Red Off

3). Stand-by State

Green Off Green Off Green Off Green Off Green Off Green Off Green Off Green Off

4). Fault State

Red Green Red Green……………Other error status word error

Red Green…………………………Wrong Battery

Red Green Red……………………Wrong Communication

Green Red…………………………Wrong Input Voltage

Green Red Green…………………Internal Temperature Protection

Green Red Green Red……………Wrong Hardware

8. Charging Curve

1). CC/CV Charging mode：(for Lithium Battery)

U1= ^U₂³ ，U2= n_串 ×2.5V，U3=Maximum voltage for the battery pack I1= ^I₂² ，I2=Maximum charging current for the battery pack，I3= ^I₆²

① Pre-charge：It only enters into pre-charging process when the battery pack voltage is under U2 ( The charger does not start when battery
pack is under U1), then it operates in a constant current charging I1, finally, the pre-charging process is completed when voltage rises to U2.

② CC Charging：It operates in a constant current charging I2, then the CC charging ends when voltage reaches to U3.

③CV Charging：Constant voltage charging with U3, the whole charging process is completed when current reduces to U3

2). Different brand-name of lead-acid batteries have different kinds of charging curves.

Below shows a typical charging curve for Chilwee battery:

9. Expansion Function

Choose the accessories according to the actual needs: 1). Thermal Sensor Interface (for lead-acid battery charger)

Thermal Sensor is recommended to lead-acid battery charger, to detect the temperature of the battery and compensate charging voltage,

2). 12V Output

Charger provides a rating voltage 12V0.2A signal output. Its electrical connections is isolated from the interior circuit of the charger for
external application function extension. Note that this 12V with LED indicator output interface are common-grounded. The independent
12V output can supply power for the battery management system. Output 12V-5A.

3). LED Output Interface

Charger provides Red, Green two LED interface or Red, Yellow, Green three LED interface. Its electrical connections is isolated from
the interior circuit of the battery charger for external application function extension.

4). ENABLE Signal (for Lithium battery charger): External control circuit must be independent circuit

As for lithium battery charger, it’s essential to use an enable signal to control the charger’s work or close. Isolated circuit (such as Relay
or Optocoupler) shall be adopted to control the charger’s work or close. Note that if the control circuit is not independent, it lead to
damage of the charger.

5). Charging Lock up Signal(for lead acid battery)

 

4). Each product should be marked with product identification in obvious place, including part number, product brand,
     product type, production number, name of production enterprises, the warning message, etc

11. Packaging, Transport and Storage

1). Packaging

On the packing box, there are product name, product part number, product brand, product type, production number and name of
manufacturer; In packing box, along with the technical documents, it includes packing list, quality certificate, product specification.

2). Transportation

Suitable for cars, boats, aircraft, transportation. The products have to be prevented against sunshine and moisture and in a civilized
transportation.

3). Storage

Product should be stored in the packing box when it is not used and be maintained in a 5 ℃ to 40 ℃ clean, dry and well-ventilated
environment. It should not be stored together with chemicals, acid and alkali substances etc,. Should avoid storing in the sun, fire,
water and avoid storing with corrosive substances. The storage period is 2 years (from the inventory date of the factory). After the
2 years of storage period, the products should still comply with the provisions of the relevant standards.

3.3KW LiFePO4 On Board Charger OBC 

TC Charger