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The slave BMU is the single-cell battery management layer. It consists of a battery monitoring chip and its associated circuits, responsible for collecting various types of information about single cells, calculating and analyzing the battery's SOC (remaining battery capacity) and SOH (battery health status), realizing active balancing of single cells, and uploading single-cell abnormal information to the master control.
It uses a first-line brand automotive-grade high-precision AFE chip, full temperature range, high-precision voltage and temperature acquisition, modular design, and can manage up to 66S per pack, compatible with conventional air-cooled 16S, liquid-cooled 48S/52S/64S liquid-cooled battery packs, supports fan control, firmware upgrades, up to 57-channel multi-channel NTC acquisition, with intelligent balancing and firmware upgrades, supports multi-slave cascade automatic address encoding, uses a highly reliable automotive-grade lock connector, and supports fan control.
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Operating voltage range
DC9V-36V
Operating current
≤ 35mA(12V)/ ≤ 20mA(24V)
CAN communication
1 channel
Number of voltage acquisition strings
16 strings, 48 strings, 52 Serial, 64 serial
Temperature detection point
14-54 channels
Single-cell detection range
0~5000mV; Exceeding the range of 0.5~5V will cause AFE damage
Voltage acquisition accuracy
±4mV
Temperature detection accuracy
±1℃
Balancing function
Support, passive balancing
Balancing open number of paths
Support cardinality or even balancing
Balancing current
Effective value 100mA
Automatic address allocation
Support
IO output
2-way dry contact | low-side driver output
Analog input detection
2-way
Software upgrade
Support CAN bus upgrade
Power reverse connection protection
Support
Power surge protection
Support
Withstand voltage
AC 3100V
Operating temperature
-20~65℃
Storage temperature
-40~125℃
Implementation standard
GB/T 34131-2023
EMC
GB/T-18655;IS011452;ISO7637;ISO10605;ISO16750
Protection level
IP43, not waterproof
Humidity
5%~95%℃, no condensation
Altitude
≤ 5000m
Appearance size
170*100*31.2mm; 360*120*31.2mm
