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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56
From version 77.2
edited by Admin
on 2026/03/31 14:19
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To version 85.1
edited by Admin
on 2026/04/02 09:52
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  
... ... @@ -39,7 +39,7 @@
39 39  
40 40  === SOC estimation ===
41 41  
42 -The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell, and then the overall battery SOC, by using following algorithms:
42 +The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell by using following algorithms:
43 43  
44 44  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
45 45  
... ... @@ -94,7 +94,7 @@
94 94  
95 95  === SOH estimation ===
96 96  
97 -The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
97 +The BMS Main 3 / BMS Main 2R device calculates the state of health of the battery (SOH) using two algorithms:
98 98  
99 99  In **"By effective capacity" **mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
100 100  
... ... @@ -546,7 +546,7 @@
546 546  
547 547  Charge/Discharge contactor has three algorithms of operation:
548 548  
549 -On **Dependent (on Charging and Discharging signals)** algorithm the charge/discharge contactor depends on Charge and Discharge algorithms and their signals and behaves
549 +On **Dependent (on Charging and Discharging signals)** algorithm the charge/discharge contactor depends on Charge and Discharge controllers and behaves:
550 550  
551 551  * as Charging contactor if "Charging" signal is set;
552 552  * as Discharging contactor in other cases.
... ... @@ -560,9 +560,8 @@
560 560  
561 561  the charging/discharging contactor opens.
562 562  
563 +On **Independent (on Charge request or Discharge request)** algorithm charge/discharge contactor is based on its own controller and performs as follows:
563 563  
564 -**Independent (on Charge request or Discharge request)** - charge/discharge contactor is based on its own controller and performs as follows:
565 -
566 566  * if there is "Charge request" or "Discharge request" signal and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging/discharging contactor closes;
567 567  * If the "Charge request" or "Discharge request" disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the charging/discharging contactor opens.
568 568  
... ... @@ -627,9 +627,9 @@
627 627  
628 628  The following **balancing rules** are supported:
629 629  
630 -* when the battery is charging (current I > 0) and time after until the battery is relaxed;
631 -* when the battery is charging (current I > 0) or when the battery is in a state of relaxation;
632 -* 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.
633 633  
634 634  A balancing resistor is connected to the cell if the following conditions are simultaneously met:
635 635  
... ... @@ -646,9 +646,9 @@
646 646  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
647 647  )))
648 648  
649 -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.
650 650  
651 -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.
652 652  
653 653  To change the cell balancing parameters, select the "Control → Cell balancing" section:
654 654  
... ... @@ -708,7 +708,7 @@
708 708  * the battery voltage is below the minimum level;
709 709  * the “Charger connected” signal is cleared for 60 seconds.
710 710  
711 -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.
712 712  
713 713  To change the parameters of the power down control, select the "Control → Power down" section:
714 714  
... ... @@ -717,10 +717,10 @@
717 717  In this section:
718 718  
719 719  * **Minimum voltage to power down** – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
720 -* Idle time to power down – a time of battery inactivity after which the battery is shut down, minute;
721 -* Wait the "Power up/down request" is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
722 -* Power down if KEYRUN and CHARGE_ON are cleared – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared;
723 -* Delay before setting the internal power down signal – a delay before turning off the device power when removing KEYRUN and CHARGE_ON or receiving the “Power down request” command, ms.
719 +* **Idle time to power down** – a time of battery inactivity after which the battery is shut down, minute;
720 +* **Wait the "Power up/down request" is cleared (on startup)** – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
721 +* **Power down if KEYRUN and CHARGE_ON are cleared** – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared;
722 +* **Delay before setting the internal power down signal** – a delay before turning off the device power when removing KEYRUN and CHARGE_ON or receiving the “Power down request” command, ms.
724 724  
725 725  === Heater ===
726 726  
... ... @@ -730,22 +730,24 @@
730 730  
731 731  In this section:
732 732  
733 -* Enable – a flag to enable the heater control;
734 -* Minimum cell temperature, °C;
735 -* Tolerant cell temperature, °C;
736 -* Delay before starting the heater, millisecond;
737 -* Delay before stopping the heater, millisecond;
738 -* Switch off the heater on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
732 +* **Enable **– a flag to enable the heater control;
733 +* **Minimum cell temperature**, °C;
734 +* **Tolerant cell temperature**, °C;
735 +* **Delay before starting the heater**, millisecond;
736 +* **Delay before stopping the heater**, millisecond;
737 +* **Errors 1, 2 to open the heater** – bitfields to choose the errors which will open the heater.
739 739  
740 740  As a result of operating the heating algorithm, the “Heater” signal is generated.
741 741  
742 742  Conditions for signal generation:
743 743  
744 -* the minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before starting the heater” time.
743 +* the minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before starting the heater” time;
744 +* there are no errors from "Errors 1, 2..." bitfields.
745 745  
746 746  Conditions for clearing the signal:
747 747  
748 -* the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before stopping the heater” time.
748 +* the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before stopping the heater” time;
749 +* there is an error from "Errors 1, 2..." bitfields.
749 749  
750 750  (% class="box infomessage" %)
751 751  (((
... ... @@ -760,22 +760,24 @@
760 760  
761 761  In this section:
762 762  
763 -* Enable – a flag to enable the cooler control;
764 -* Maximum cell temperature, °C;
765 -* Tolerant cell temperature, °C;
766 -* Delay before starting the cooler, millisecond;
767 -* Delay before stopping the cooler, millisecond;
768 -* Switch off the cooler contactor on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
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.
769 769  
770 770  As a result of operating the cooling algorithm, the "Cooler" signal is generated.
771 771  
772 772  Conditions for signal generation:
773 773  
774 -* the maximum temperature among all cells of the battery is greater than the “Maximum cell temperature” value during the “Delay before starting the cooler” time.
775 +* the maximum temperature among all cells of the battery is greater than the “Maximum cell temperature” value during the “Delay before starting the cooler” time;
776 +* there are no errors from "Errors 1, 2..." bitfields.
775 775  
776 776  Conditions for clearing the signal:
777 777  
778 -* the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before stopping the cooler” time.
780 +* the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before stopping the cooler” time;
781 +* there is an error from "Errors 1, 2..." bitfields.
779 779  
780 780  (% class="box infomessage" %)
781 781  (((
... ... @@ -784,6 +784,11 @@
784 784  
785 785  === High voltage ===
786 786  
790 +(% class="box warningmessage" %)
791 +(((
792 +This section is not available on BMS Main 2R.
793 +)))
794 +
787 787  The BMS Main 3 device has an ability to measure high voltages before and after contactors.
788 788  
789 789  To change the parameters of high voltage fault, select the "Control → High voltage" section:
... ... @@ -792,9 +792,9 @@
792 792  
793 793  In this section:
794 794  
795 -* Enable – a flag to enable High voltage control;
796 -* Delay before clearing the High voltage fault, second;
797 -* 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**.
798 798  
799 799  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.
800 800  
... ... @@ -807,7 +807,7 @@
807 807  
808 808  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.
809 809  
810 -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.
811 811  
812 812  Before starting the process of determining the discharge characteristic, it is necessary to prepare a BMS:
813 813  
... ... @@ -820,18 +820,14 @@
820 820  
821 821  In this section:
822 822  
823 -* Enable – a flag to enable cell analysis;
824 -* Discharge step, Ah;
825 -* Delta voltage – a maximum allowable voltage drop for the cell, V;
826 -* Logic index, Cell index – a position of the analyzed cell;
827 -* 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).
828 828  
829 -Discharge step should be set equal to
837 +Discharge step should be set equal to С/21, where C is the cell capacity.
830 830  
831 -Discharge step= С/21,
832 -
833 -where C is the cell capacity.
834 -
835 835  The discharge characteristic will be constructed for the given cell (its position is determined by the fields “Logic index” and “Cell index”).
836 836  
837 837  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.