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Wiki source code of 3.4 Battery parameters

Version 3.2 by Admin on 2024/11/21 16:20
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Admin 1.2 1 == 3.4.1 Cell defaults ==
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3 To change the default cell settings, select the menu "Cells → Cell defaults":
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Admin 2.2 5 [[Cell default section>>image:1732205873121-893.png||data-xwiki-image-style-alignment="center" height="313" width="416"]]
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7 In this section:
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9 * Capacity – nominal capacity of cells, Ah;
10 * Resistance – nominal (maximum) internal resistance of the cell, Ohm;
11 * Relax time (after charging) – a relaxation time after charging, second;
12 * Relax time (atfer discharging) – the relaxation time after discharging, second;
13 * Cycles – a number of charge-discharge cycles;
14 * Reset battery cycles – a command to reset charge-discharge cycles;
15 * Reset cell parameters (SOC, capacity, resistance) – a command to reset cells state of charge, capacity, and resistance.
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17 The values “Capacity”, “Resistance”, “Cycles” are used to calculate the SOC of cells and battery.
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19 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.
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21 The “Reset cell parameters” command is used for starting-up and adjustment of battery.
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Admin 3.2 23 == 3.4.2 SOC estimation ==
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25 The BMS Main 2.x board calculates the state of charge of the battery (SOC) using two algorithms:
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27 * by open circuit voltage;
28 * by current and voltage.
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30 It is recommended to use the algorithm of calculation of SOC by voltage and current.
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32 To change the parameters of the algorithm for calculating the battery SOC, select the menu "Cells → SOC estimation":
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34 [[image:1732206031847-819.png]]