Battery monitor

BM-108C Battery Monitor

Bm-108c battery monitor is used for real-time on-line monitoring of up to 108 batteries. The terminal voltage, total voltage, charging and discharging current, surface temperature and other parameters of each battery pack are monitored. Alarm signals are sent out for all abnormal parameters. The open communication protocol can monitor the operation status of multiple batteries by parallel lines.

As an improved version, bm-108c improves measurement accuracy, reduces volume, uses more advanced design and production process, and has better applicability and reliability than bm-108b.

Due to the simple installation method of guide rail, the measuring unit and battery pack are installed nearby, which is suitable for the existing centralized monitoring system, reducing the installation workload and cost to the greatest extent, and has excellent performance price ratio. It can effectively reduce the workload and work intensity of operation and maintenance personnel, which is of great significance to ensure the safe and normal operation of battery pack

 

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Feature

  • The advanced AVR single-chip microcomputer system has static operation and no life loss. Any fault will not endanger the safety of battery pack;
  • Precision common mode voltage detection technology, multi-channel real-time sampling, real-time online monitoring;
  • Single cell voltage, total voltage, charging and discharging current and temperature are monitored at the same time with high precision;
  • The dot matrix LCD display, humanized human-machine interface;
  • Online software calibration of measurement voltage accuracy;
  • Multiple alarm judgment, no disoperation / refusal to operate;
  • The RS485 isolated communication interface can automatically respond to a variety of communication protocols without setting;
  • Low power consumption, passing 8KV EMC test;

Specifications

PARAMETER SYMBOL TEST CONDITIONS. MIN TYP MAX UNITS
Power Vo AC 90 260 V
DC 90 310
Input power Po 2.5 W
Temperature rise Tr Free-air 10 ℃
Alarm contact Pj DC 60V/1A
Operating Ambient temperature Ts -20 50 ℃
PARAMETER SYMBOL TEST CONDITIONS. MIN TYP MAX UNITS
Measuring range Vi Between adjacent terminals 0.00 4.000 V
Maximum allowed input Vm ditto 500 V
Input impedance Rin ditto 400 KΩ
Resolution Vr 1 mV
Measurement error Vi=0-4.0V ±0.2 %
Nonlinearity ditto ±0.1 %
Zero drift Ve Vi=0.00V 0.00 1 mV
Temperature coefficient -10-50℃ ±0.05 mV℃
PARAMETER SYMBOL TEST CONDITIONS. MIN TYP MAX UNITS
Measuring range Vi 0.0 400.0 V
Maximum allowed input Vm ±500 V
Input impedance Rin 400 kΩ
Resolution Vr 0.1 V
Measurement error Vi=0-400V ±0.2 %
Nonlinearity ditto ±0.05 %
Zero drift Ve Vi=0.0V 0.0 0.1 V
Temperature coefficient -10-50℃ ±2 mV/℃

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