33
Explanation of 3 stage charging curve
Initial stage (battery analysis)
：
Charger will detect and determine whether the battery is properly
connected or it is already fully charged.
Stage 1 (Constant current)
：
Maximum constant current is applied for fast charging, until the
voltage of battery reaches to boost voltage.
Stage 2 (Constant voltage)
：
In this stage, charger applies a constant voltage on the battery.
Charging current decreases gradually and then goes into the final
stage when charging current
to 10% of rated current.
drops
Stage 3 (float charging)
：
The charger is able to provide a float voltage after 2 stage charging in
order to keep the battery fully charged at all times. Especially suitable
for lead-acid batteries.
Suitable for lead-acid batteries (flooded water type, Gel colloid type,
AGM adsorption glass fiber)
.
1
2
3
4
*
stage 3
Float
100%
V
boost
V
float
10%
5
In the initial stage of charging, the charger charges the battery
with the maximum current. After a period of time (depending on
the battery capacity), the charging current decreases gradually.
When the charging current drops to 10% of the rated current LED
,
indicator lights up in green, indicating that the charging process
is completed and the charger remains at float charging stage.
5.
.
10 2
3 stage charging (default)
Charge
Current
Start
Charge
Voltage
Color of LED
Loading Indicator
Constant
Current
Constant
Voltage
stage 1
stage 2
Orange
Green
State
Constant Current
V
boost
V
float
HEP-2300-55
40A
57.6V
55.2V
34
SBP-001, the smart battery charging programmer developed by
MEAN WELL, can be used to set charging curves of the unit
through editing software. SBP-001 provides functions such as
charging curve adjustment and battery temperature
compensation. Install configuration and software interface are
shown as below. Please refer to "SBP-001 Smart Battery Charging
Programmer User Manual" for details
.
5.
.
10 5
Charge mode setting – via SBP-001
https://www.meanwell.com/webapp/product/search.aspx?prod=SBP-001&pdf=U0JQLUUucGRm&a=4
Users can set the unit at power supply mode or charger mode directly
t h r o u g h c o m m a n d : C U R V E _ C O N G I H ( P M B u s : 0 x B 4 h ;
CANBus/Modbus: 0x00B4)). Command
CURVE_CONFIG also can be
”
used to set the unit at 2 stage or 3 stage charge and relevant charge
settings. Please refer to 5.11 communication interfaces for detailed
information.
5.
.
10 4
Charge mode setting via communication interfaces
–
Upper limit of voltage
compensation
57 6V
.
49 8V
.
-
~
30 70
℃
NOTE: If the desired parameter differs from the factory setting,
SBP-001 or communication interfaces shall be used to
change the parameter.
Lower limit of voltage
compensation
Compensation range
of Temperature
5
Figure
5 9
-
PIN5,6 RTH+
PIN7,8 RTH-
NTC
CN81
●
The battery temperature sensor (a NTC) that comes with the
product can be connected to the batter y for sensing
temperature of the battery. The charge is able to work normally
without the sensor.
●
The temperature sensor which comes with the product can be
connected to pin Rth+ and pin Rth-. The wire length of the
sensor can be adjusted according to different applications by
linking the connector and sensor parts with wire length needed.
Default setting is -3mV/Cell/, ℃ compensated voltages are
shown as below:
5.
.
10 3
Temperature Compensation