Changes for page 3.3 Control
Last modified by Admin on 2026/04/30 15:56
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... ... @@ -12,27 +12,31 @@ 12 12 13 13 In this section: 14 14 15 -* Cell capacity – nominal capacity of cells, Ah; 16 -* Cell resistance – nominal (maximum) internal resistance of the cells, Ohm; 17 -* Relax time (after charging) – a relaxation time after charging, second; 18 -* Relax time (atfer discharging) – a relaxation time after discharging, second; 19 -* Reset parameters – a command to reset cells state of charge, capacity, and resistance; 20 -* Method of calculating the battery voltage: 21 -** Summation of cell voltages – the overall voltage is calculated as on sum of all cells in the battery; 22 -** Using voltage before contactors – the overall voltage is estimated as voltage before contactors measured by BMS. 15 +* **Cell capacity** – nominal capacity of cells, Ah; 16 +* **Cell resistance** – nominal (maximum) internal resistance of the cells, Ohm; 17 +* **Connection of cells:** 18 +** **Serial **– all cells are connected in series in a single string. 19 +** **Parallel-Serial **– cells are grouped in parallel and serial items; 20 +* **Parallel-Serial: Number of Logic devices in a chain**; 21 +* **Parallel-Serial: Number of parallel chains in a block**; 22 +* **Parallel-Serial: Number of serial blocks in a string**; 23 +* **Relax time (after charging)** – a relaxation time after charging, second; 24 +* **Relax time (atfer discharging)** – a relaxation time after discharging, second; 25 +* **Reset SOC** – a command to reset cells state of charge. New cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section; 26 +* **Reset resistance** – a command to reset cells resistance to “Cell resistance” value; 27 +* **Reset capacity** – a command to reset cells capacity to “Cell capacity” value; 28 +* **Method of calculating the battery voltage***: 29 +** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery; 30 +** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS. 23 23 24 -The values“Capacity”and“Resistance”are used to calculate theSOCofcells andthe battery.32 +The **"Parallel-Serial"** connection works as follows: a bunch of serial connected Logics are grouped into chains. A bunch of parallel connected chains are grouped to blocks. A bunch of serial connected blocks are grouped into string. By configuring the corresponding settings it is possible to create a complex string configuration. Current through each chain will be estimated as a fraction of overall current accordingly to the number of chains in a block. 25 25 26 -The values of“Relax time” are usedto determine thestateof the battery. If thebattery isin a stateof relaxation,the system recalculatesthevoltageonthecellsto the stateof charge ofthe battery.34 +The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery. 27 27 28 -The “Reset parameters”willreset:36 +The values of **“Relax time”** are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery. 29 29 30 -* state of charge (new cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section); 31 -* cell resistance to “Cell resistance” value; 32 -* battery capacity to “Cell capacity” value. 38 +The **“Reset ”** command is used for starting-up and adjustment of the battery. 33 33 34 -The “Reset parameters” command is used for starting-up and adjustment of the battery. 35 - 36 36 === SOC estimation === 37 37 38 38 The BMS Main 3 device calculates the state of charge of the battery (SOC) using two algorithms: