5
Figure 1-4 Battery charging stage curve
A) Bulk Charging
The battery voltage has not yet reached constant voltage (Equalize or Boost Charging Voltage). The
controller operates in constant current mode, delivering its maximum current to the batteries (MPPT
Charging). When the battery voltage reaches the constant voltage set point, the controller will start to
operate in constant charging mode.
B) Constant Charging
When the battery voltage reaches the constant voltage set point, the controller will start to operate in
constant charging mode. The MPPT charging stops during this process, and the charging current will
drop gradually at the same time. Constant charging has two stages, namely, equalize charging and
boost charging. These two charging processes are not repeated. Among them, equalize charging starts
on the 28th of each month.
Boost Charging
The default duration of the boost charging stage is generally 2 hours. Customers can also adjust the
constant time and preset value according to actual needs. When the duration is equal to the set value,
the system will switch to the float charging stage.
Equalize Charging
Explosive Risk! Equalizing flooded batteries would produce explosive gases, so well
ventilation of the battery box is recommended.
To Next Page
Loading...
Need help?
General
