Dyness POWERBOX Pro - Battery Management System(BMS); Voltage Protection; Current Protection

Powerbox Pro series User Manual
10
The master LED1 yellow flash
Communication failure between
batteries
2.4 Battery Management System(BMS)
2.4.1 Voltage Protection
Low Voltage Protection in Charging
：
When any battery cell voltage or total voltage is lower than the rated protection value during
discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm
sound. Then battery system stops supplying power to the outside. When the voltage of each cell
back to rated return range, the protection is over.
Over Voltage Protection in Charging
：
During charging stage, the system will stop charging when the total voltage of the battery pack is
higher than rated value or the voltage of any single cell reaches the protection value. When total
voltage or all cell back to rated range, the protection is over.
2.4.2 Current Protection
Over Current Protection in Charging
：
When the charge current of any module
＞
90A, current limit protection mode is activated,
current will be limited to 1A
，
protection is removed after rated time delaying 10S. Circulate like
this until the current is lower than 90A.
Over Current Protection in Discharging
：
When the discharge current of any module is higher than 100A, the battery buzzer alarms and
the system stops discharging after 15s. After protection, the discharging will restore in 60s delay
or immediately when there is charging current.
Caution:
The buzzer sound alarm setting can be manually turned off on the background software, and the
factory default is on.