background image

 

                                                                         Rozna ulica 20, 6230 Postojna, Slovenia 
                                                                 e-mail: [email protected]

www.rec-bms.com

 

 

 

 

 
 

VICTRON CCGX-SUPPORTED ACTIVE BATTERY 

MANAGEMENT SYSTEM REC ACTIVE BMS 

 

 

 

 

Features: 

 

-

 

robust and small design 

-

 

4 cells 

-

 

single cell voltage measurement (0.1 – 5.0 V, resolution 1 mV) 

-

 

single cell - under/over voltage protection 

-

 

single cell internal resistance measurement 

-

 

SOC and SOH calculation 

-

 

over temperature protection  

-

 

under temperature charging protection 

-

 

active cell balancing up to 2.5 A DC per cell  

-

 

shunt current measurement (resolution 19.5 mA @ ± 500 A) 

-

 

galvanically isolated user defined multi-purpose digital output 

-

 

programmable relay (normally open or normally closed) 

-

 

galvanically isolated RS-485  communication protocol 

-

 

CAN communication (Victron compatible) 

-

 

error LED + buzzer indicator  

-

 

12 ERROR log on the device FIFO 

-

 

PC user interface for changing the settings and data-logging (optional accessory) 

-

 

hibernate switch 

-

 

one IP65 protected connector for all connections 

-

 

one-year warranty 

Summary of Contents for ACTIVE BMS

Page 1: ...e protection under temperature charging protection active cell balancing up to 2 5 A DC per cell shunt current measurement resolution 19 5 mA 500 A galvanically isolated user defined multi purpose dig...

Page 2: ...s Current is measured by a low side shunt resistor Battery pack current temperature and cell s voltage determine state of charge SOC State of health SOH is determined by comparing cell s current para...

Page 3: ...cell over temperature switch off 55 C under temperature charging disable 15 C voltage to current coefficient 0 01953125 A bit current measurement zero offset 0 0 A maximum charging discharging current...

Page 4: ...ve Analog signal 13 relay 1 user defined Normally open 14 Charge Optocoupler collector 15 Charge Optocoupler emitter darlington reverse protection diode polyfuse 16 Optocoupler 2 user defined collecto...

Page 5: ...Assemblies 776268 in Instruction Sheet U S BMS Unit Connector Cells part Connect each cell to the BMS unit cell connector plug Use silicon wires with cross section of 0 5 1 4 mm2 20 16 AWG Before inse...

Page 6: ...first minus e g 1A XXXX Messages are comprised as follows STX DA SA N INSTRUCTION 4 bytes 16 bit CRC ETX STX start transmission 0x55 always DA destination address 0x01 to 0x10 set as 6 SA sender addre...

Page 7: ...B LCD3 7 Ah LSB Read only CELL Cell voltages BMS first responds with how many BMS units are connected then it sends the values of the cells in float format Read only PTEM Cell temperatures BMS first r...

Page 8: ...FF x xxx Current measurement zero offset Returns float current A 2 0 to 2 0 A IOJA Or IOJA x xxx Voltage to current coefficient Returns float value 0 0005 to 0 5 BATTARY PACK SETTINGS INSTRUCTIONS CYC...

Page 9: ...025 to 0 025 V CAL2 or CAL2 x xxx Cell 2 calibration offset Returns float voltage V 0 025 to 0 025 V CAL3 or CAL3 x xxx Cell 3 calibration offset Returns float voltage V 0 025 to 0 025 V CAL4 or CAL4...

Page 10: ...or pin designator Pin Designator 1 2 3 GND 4 5 6 7 CANH TERMINATION 8 CANL TERMINATION Termination plug with 120 R No termination is used inside ABMS connector Terminate pins 2 and 7 with 120 Ohm resi...

Page 11: ...alancing is charging of dangerously low cell if other cells are above dangerous level consequently longer pack usage is possible Balancing START Voltage If errors 2 4 5 8 10 12 are not present and the...

Page 12: ...measurement procedure for a proper internal DC resistance calculation Two more 300 ms measurements are performed through the whole ABMS measurement interval Shunt connection is shown in Fig 6 Figure 6...

Page 13: ...Number of Devices until the last cell rises to the End of Charge Voltage At that point the Maximum charging voltage allowed is set to Number of cells x End of Charge Voltage per cell end of charge hys...

Page 14: ...ically saved when you change it Grid set point is not fixed value and can be modified for user needs ABMS Outputs setting Non Victron devices can be controlled by digital outputs Charge optocoupler an...

Page 15: ...e digital output should be taken into account Optocoupler outputs can drive a small signal relay or LED diodes Fig 7 shows two different connection schematics Both outputs can be used to drive LED dio...

Page 16: ...s like this degrade the contactor cells and input capacitors in the electronic devices Fig 8 shows contactor connection with the pre charge unit Figure 8 Contactor connection schematics Parallel Cells...

Page 17: ...to balance the cells if balancing is enabled 5 s error hysteresis 20 mV voltage difference hysteresis Charging is enabled discharging is enabled Main relay is connected Relay 1 and optocoupler 2 are...

Page 18: ...ort circuit or measuring failure 15 s error hysteresis 10 mV voltage difference hysteresis Charging is disabled discharging is disabled Main relay is disconnected Relay 1 and optocoupler 2 are disable...

Page 19: ...Figure 10 BMS dimensions M4 bolts are preferred to use for mounting BMS unit can be also supplied without the enclosure if an application is weight or space limited The dimensions of the BMS including...

Reviews: