DL5.0C User Manual
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Battery Management System(BMS)
Voltage Protection
Low Voltage Protection in Discharging:
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：
Battery will stops charging when total voltage or any battery cell voltage reaches the
rated protection value during charging stage. When total voltage or all cell back to rated
range, the protection is over.
Current Protection
Over Current Protection in Charging：
When the charge current
＞
90A, current limit protection mode is activated, current will be
limited to
≤
3A
，
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 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.
The buzzer sound alarm setting can be manually turned off on the background software,
and the factory default is on.
Temperature Protection
Low/Over temperature protection in charging：
When battery’s temperature is beyond range of 0
o
C~+55
o
Cduring charging, temperature
protection is activated, device stops charging.
The protection is over when temperature back to rated working range.
Low/Over temperature protection in discharging
：
When battery’s temperature is beyond range of -20
o
C~+55
o
C during discharging,
temperature protection is activated, device stops supplying power to the outside.
The protection is over when temperature back to rated working range.
Other Protection
Short Circuit Protection：
When the battery is activated from the shutdown state, if a short circuit occurs, the
system starts short-circuit protection for 60 seconds.
Self-Shutdown
：
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