Product Introduction
PW3402 is a battery management system designed according to the features of backup power battery array used in large-scale communication base stations. It can monitor, protect and alarm the energy storage array of lithium iron phosphate or lithium titanate batteries. Besides, it also has the function of controlling the switch of backup power and AC. The system has the true meaning of "1 +1" backup and "0" delayed response.

System Characteristics:
Seamless transitions between backup power and AC
Omnibearing management and protection of battery pack, maximum improvement of battery pack
Modular construction, extendable, a single cluster head could support 200 strings of lithium batteries
High-precision voltage detection of single cell(± 1mV), proper protection of overcharge and over discharge
Active fulltime balance, transient equalizing current more than 5A, average equalizing current more than 2A
The system has data transfer bus which is capable of high-speed transmission
High-precision current detection
Reserved function of distributed SoC estimation for every battery pack
Battery power management could control every string of batteries
Multipoint temperature monitoring which could monitor every battery and environment temperature
Electric leakage detection
BMS internal protection which could cut off the current loop automatically
SOC estimation of the battery cluster, Reserved function of distributed SoH estimation
Capacity correction of battery clusters
Event logging
Battery pack status display
BMS authority management and parameter setting, including HMI, remote setting (upper computer software) and GPRS

Main Applications:
Telecommunications room (CMCC, China Telecom)
IDC Center
Computer System
High Precision Equipment
Factory Production Lines