4.2 Battery

Battery parameters are summarized in the "Battery" section:

In this section:

• Voltage – voltage of the battery, V;
• Current – current of the battery, A;
• Internal resistance – internal resistance of the battery, Ohm;
• BMS consumption – current consumption of the BMS, A;
• Board temperature – internal temperature of the BMS, °C;
• Contactor temperature – temperature of the contactor, °C;
• Number of cells – number of connected cells;
• Average cell temperature, °C;
• Minimum cell temperature, °C;
• Min. cell temp.: cell index – number of cell with minimum temperature;
• Maximum cell temperature, °C;
• Max. cell temp.: cell index – number of cell with maximum temperature;
• Average cell voltage, V;
• Minimum cell voltage, V;
• Min. cell volt.: cell index – number of cell with minimum voltage;
• Maximum cell voltage, V;
• Max. cell volt.: cell index – number of cell with maximum voltage;
• Minimum cell SOC, %;
• Min. cell SOC: cell index – number of cell with minimum SOC;
• Maximum cell SOC, %;
• Max. cell SOC: cell index – number of cell with maximum SOC;
• Number of balancing cells;
• State:
  • Discharging ON;
  • Discharging OFF;
  • Relaxed (after discharging) – battery is in a state of relaxation after discharging;
  • Charing ON;
  • Charging OFF;
  • Relaxed (after charging) – battery is in a state of relaxation after charging;
• Duration – duration of the battery in the "State" state, s;
• SOC – state of charge of the battery, %;
• DOD – depth of discharge of the battery, %;
• SOH – state of health of the battery, %;
• Balancing efficiency – balancing efficiency of the battery, %;
• Effective capacity, А×h;
• Instant capacity – instantaneous value of the effective capacity (used to calculate the SOC), А×h;
• Coulomb counter + – charge received by the battery from the charger, А×h;
• Coulomb counter - – charge transferred to the battery load, А×h;
• Charge current limit – maximum allowed charge current of the battery, A;
• Discharge current limit – maximum allowed discharge current of the battery, A;
• Work charge+ - amount of charge received from charger (positive direction) since device startup, Ah;
• Work charge- - amount of charge transmitted to the load (negative direction) since device startup, Ah;
• Work energy+ - amount of energy received from charger (positive direction) since device startup, Wh;
• Work energy- - amount of energy transmitted to the load (negative direction) since device startup, Wh;
• Total energy+ - total energy received by the battery modules from the charger, Wh;
• Total energy- - total energy spent by the battery modules on the load, Wh;
• Total balanced energy – total energy dissipated by the battery modules on balancing resistors, Wh;
• Input signals – a bitfield including input signals (see Input signals);
• Internal signals – a bitfield including device internal signals (see Internal signals);
• Errors 1, 2 – errors of the battery (see Errors).