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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56
From version 78.2
edited by Admin
on 2026/03/31 14:26
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To version 83.1
edited by Admin
on 2026/04/02 09:45
Change comment: There is no comment for this version

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... ... @@ -15,7 +15,7 @@
15 15  * **Cell capacity** – nominal capacity of cells, Ah;
16 16  * **Cell resistance** – nominal (maximum) internal resistance of the cells, Ohm;
17 17  * **Connection of cells:**
18 -** **Serial **– all cells are connected in series in a single string.
18 +** **Serial **– all cells are connected in series in a single string;
19 19  ** **Parallel-Serial **– cells are grouped in parallel and serial items;
20 20  * **Parallel-Serial: Number of Logic devices in a chain**;
21 21  * **Parallel-Serial: Number of parallel chains in a block**;
... ... @@ -29,7 +29,7 @@
29 29  ** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery;
30 30  ** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS.
31 31  
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.
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 calculated as overall string current divided by number of chains in a block.
33 33  
34 34  The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery.
35 35  
... ... @@ -626,9 +626,9 @@
626 626  
627 627  The following **balancing rules** are supported:
628 628  
629 -* when the battery is charging (current I > 0) and time after until the battery is relaxed;
630 -* when the battery is charging (current I > 0) or when the battery is in a state of relaxation;
631 -* always (regardless of battery state).
629 +* **Balance on charge** – perform balancing when the battery is charging (current I > 0) and time after until the battery is relaxed;
630 +* **Balance on charge or relaxed** – perform balancing when the battery is charging (current I > 0) or when the battery is in a state of relaxation ​​​​​;
631 +* **Balance always** regardless of battery state.
632 632  
633 633  A balancing resistor is connected to the cell if the following conditions are simultaneously met:
634 634  
... ... @@ -645,9 +645,9 @@
645 645  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
646 646  )))
647 647  
648 -The BMS Main 3 / BMS Main 2R can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
648 +The BMS Main 3 / BMS Main 2R can enable the cell balancing by the external **“Balancing request”** signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
649 649  
650 -BMS Main 3 / BMS Main 2R can force a cell balancing, if its voltage is higher than estimated value.
650 +BMS Main 3 / BMS Main 2R can **force balancing **of the cell, if its voltage is higher than estimated value.
651 651  
652 652  To change the cell balancing parameters, select the "Control → Cell balancing" section:
653 653  
... ... @@ -707,7 +707,7 @@
707 707  * the battery voltage is below the minimum level;
708 708  * the “Charger connected” signal is cleared for 60 seconds.
709 709  
710 -The BMS Main 3 device also shuts down the battery if it stays in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” for the configured time.
710 +The BMS Main 3 device also shuts down the battery if it **stays for a long time **in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” state.
711 711  
712 712  To change the parameters of the power down control, select the "Control → Power down" section:
713 713  
... ... @@ -761,12 +761,12 @@
761 761  
762 762  In this section:
763 763  
764 -* Enable – a flag to enable the cooler control;
765 -* Maximum cell temperature, °C;
766 -* Tolerant cell temperature, °C;
767 -* Delay before starting the cooler, millisecond;
768 -* Delay before stopping the cooler, millisecond;
769 -* **Errors 1, 2 to open the heater** – bitfields to choose the errors which will open the heater.
764 +* **Enable** – a flag to enable the cooler control;
765 +* **Maximum cell temperature**, °C;
766 +* **Tolerant cell temperature**, °C;
767 +* **Delay before starting the cooler**, millisecond;
768 +* **Delay before stopping the cooler**, millisecond;
769 +* **Errors 1, 2 to open the cooler **– bitfields to choose the errors which will open the cooler.
770 770  
771 771  As a result of operating the cooling algorithm, the "Cooler" signal is generated.
772 772  
... ... @@ -787,6 +787,11 @@
787 787  
788 788  === High voltage ===
789 789  
790 +(% class="box warningmessage" %)
791 +(((
792 +This section is not available on BMS Main 2R.
793 +)))
794 +
790 790  The BMS Main 3 device has an ability to measure high voltages before and after contactors.
791 791  
792 792  To change the parameters of high voltage fault, select the "Control → High voltage" section:
... ... @@ -795,9 +795,9 @@
795 795  
796 796  In this section:
797 797  
798 -* Enable – a flag to enable High voltage control;
799 -* Delay before clearing the High voltage fault, second;
800 -* Lock the High voltage fault.
803 +* **Enable **– a flag to enable High voltage control;
804 +* **Delay before clearing the High voltage fault**, second;
805 +* **Lock the High voltage fault**.
801 801  
802 802  The BMS Main 3 implements a self-diagnostics of high-voltage measurement lines. If measurement line breaks or high-voltage polarity is wrong, “High voltage fault” is generated.
803 803  
... ... @@ -810,7 +810,7 @@
810 810  
811 811  The battery discharge characteristic – the dependence Uocv = Uocv(DOD) – is used to determine the tabular dependence Uocv = Uocv(SOC, t°C), which is necessary for calculating the battery charge level.
812 812  
813 -The BMS Main 3 device can automatically determine the battery discharge characteristic.
818 +The BMS Main 3 / BMS Main 2R device can automatically determine the battery discharge characteristic.
814 814  
815 815  Before starting the process of determining the discharge characteristic, it is necessary to prepare a BMS:
816 816  
... ... @@ -823,18 +823,14 @@
823 823  
824 824  In this section:
825 825  
826 -* Enable – a flag to enable cell analysis;
827 -* Discharge step, Ah;
828 -* Delta voltage – a maximum allowable voltage drop for the cell, V;
829 -* Logic index, Cell index – a position of the analyzed cell;
830 -* Analyse the most discharged cell – a flag to analyse of the least charged cell (in this case, the values “Logic index” and “Cell index” are ignored).
831 +* **Enable **– a flag to enable cell analysis;
832 +* **Discharge step**, Ah;
833 +* **Delta voltage** – a maximum allowable voltage drop for the cell, V;
834 +* **Logic index, Cell index** – a position of the analyzed cell;
835 +* **Analyse the most discharged cell** – a flag to analyse of the least charged cell (in this case, the values “Logic index” and “Cell index” are ignored).
831 831  
832 -Discharge step should be set equal to
837 +Discharge step should be set equal to С/21, where C is the cell capacity.
833 833  
834 -Discharge step= С/21,
835 -
836 -where C is the cell capacity.
837 -
838 838  The discharge characteristic will be constructed for the given cell (its position is determined by the fields “Logic index” and “Cell index”).
839 839  
840 840  The algorithm for determining the discharge characteristic of the battery will be started if the “Enable” flag is set. From this moment, the control of the discharge contactor is performed by this algorithm.