Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56

From 78.2 to 78.3 From 87.6 to 87.7

From version 78.3

edited by Admin
on 2026/03/31 14:27

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To version 87.6

edited by Admin
on 2026/04/02 10:24

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@@ -15,7 +15,7 @@
  * **Cell capacity** – nominal capacity of cells, Ah;
  * **Cell resistance** – nominal (maximum) internal resistance of the cells, Ohm;
  * **Connection of cells:**
--** **Serial **– all cells are connected in series in a single string.
++** **Serial **– all cells are connected in series in a single string;
  ** **Parallel-Serial **– cells are grouped in parallel and serial items;
  * **Parallel-Serial: Number of Logic devices in a chain**;
  * **Parallel-Serial: Number of parallel chains in a block**;
@@ -29,7 +29,7 @@
  ** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery;
  ** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS.
--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.
++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.
  The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery.
@@ -39,7 +39,7 @@
  === SOC estimation ===
--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:
++The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell by using following algorithms:
  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
@@ -94,7 +94,7 @@
  === SOH estimation ===
--The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
++The BMS Main 3 / BMS Main 2R device calculates the state of health of the battery (SOH) using two algorithms:
  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.
@@ -402,9 +402,9 @@
  The BMS Main 3 / BMS Main 2R device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor.
--BMS Main 3 can detect errors while pre-charging the load capacity by monitoring **the current and voltage difference** before and after contactors.
++BMS Main 3 can check the preacharge process by monitoring **the current and voltage difference** before and after contactors.
--BMS Main 2R can detect errors while pre-charging the load capacity **only by monitoring the current**.
++BMS Main 2R can check the preacharge process **only by monitoring the current**.
  In **simple **mode precharge contactor closes a "Precharge time" before the closing of Charge or Discharge contactors and opens after the same amount of time after closing them.
@@ -431,7 +431,7 @@
  * **Delay before clearing the "Precharge error"**, second;
  * **Lock the "Precharge error"** – a flag to block the error until the device is restarted.
--“Precharge error” generation conditions if any of the following is true:
++“Precharge error” generates if any of the following is true:
  * the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts";
  * voltages before and after contactors are not equal during the "Precharge time" after "Number of precharging attempts";
@@ -448,27 +448,27 @@
  BMS Main 3 / BMS Main 2R supports three charge control algorithms:
--If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
++If the "**Always on**" algorithm is selected, the "Сharging signals" and the "Allow charging" signals are always set. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
  * Service reset;
  * Power down request;
  * Inhibit charging,
--both contactors are open (no current flows).
++both signals are cleared.
  When the algorithm "**On charger connected**" is selected, the control is performed as follows:
--* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
--* If the signal “Charger connected” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens.
++* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Charging" and the "Allow charging" signal are set;
++* If the signal “Charger connected” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the "Allow charging" signal is cleared and after the delay time T,,off,, the "Charging" signal is cleared.
  When the "**On charge request**" algorithm selected, the control is performed as follows:
--* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
--* If the signal “Charge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
++* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Charging" and the "Allow charging" signal are set;
++* If the signal “Charge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the "Allow charging" signal is cleared and after the delay time T,,off,, the "Charging" signal is cleared;
  (% class="box infomessage" %)
  (((
--**Note: **when errors occur in the system, the **Charge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++**Note: **when errors occur in the system, the **"Charing" **signal is cleared either immediately or with the delay T,,off,, (depends on the settings described below).
  )))
  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
@@ -493,26 +493,26 @@
  === Discharge ===
--The BMS Main 3 / BMS Main 2R device controls the discharging contactor to connect battery to the load.
++The BMS Main 3 / BMS Main 2R device connect battery to the load using the "Discharging" signal.
  BMS Main 3 / BMS Main 2R supports three algorithms to control battery discharging:
--When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
++When the algorithm "**Always on**" is selected, the "Discharging" signal is always set. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
  * Service reset
  * Power down request
  * Inhibit discharging
--the discharging contactor opens.
++the "Discharging" signal is cleared.
  If the algorithm "**On charger disconnected**" is selected, the control is performed as follows:
--* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
++* if there are no “Charger connected” and "Charging" signals and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Discharging" signal is set;
++* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the "Discharging" signal is cleared.
  When the "**On discharge request**" algorithm selected, the control is performed as follows:
--* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
++* if there is signal “Discharge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Discharging" signal is set;
  * If the signal “Discharge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
  (% class="box infomessage" %)
@@ -626,9 +626,9 @@
  The following **balancing rules** are supported:
--* when the battery is charging (current I > 0) and time after until the battery is relaxed;
--* when the battery is charging (current I > 0) or when the battery is in a state of relaxation;
--* always (regardless of battery state).
++* **Balance on charge** – perform balancing when the battery is charging (current I > 0) and time after until the battery is relaxed;
++* **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 ;
++* **Balance always** regardless of battery state.
  A balancing resistor is connected to the cell if the following conditions are simultaneously met:
@@ -645,9 +645,9 @@
  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
  )))
--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.
++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.
--BMS Main 3 / BMS Main 2R can force a cell balancing, if its voltage is higher than estimated value.
++BMS Main 3 / BMS Main 2R can **force balancing **of the cell, if its voltage is higher than estimated value.
  To change the cell balancing parameters, select the "Control → Cell balancing" section:
@@ -707,7 +707,7 @@
  * the battery voltage is below the minimum level;
  * the “Charger connected” signal is cleared for 60 seconds.
--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.
++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.
  To change the parameters of the power down control, select the "Control → Power down" section:
@@ -787,6 +787,10 @@
  === High voltage ===
++(% class="box warningmessage" %)
++(((
++This section is not available on BMS Main 2R.
++)))
  The BMS Main 3 device has an ability to measure high voltages before and after contactors.
@@ -796,9 +796,9 @@
  In this section:
--* Enable – a flag to enable High voltage control;
--* Delay before clearing the High voltage fault, second;
--* Lock the High voltage fault.
++* **Enable **– a flag to enable High voltage control;
++* **Delay before clearing the High voltage fault**, second;
++* **Lock the High voltage fault**.
  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.
@@ -811,7 +811,7 @@
  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.
--The BMS Main 3 device can automatically determine the battery discharge characteristic.
++The BMS Main 3 / BMS Main 2R device can automatically determine the battery discharge characteristic.
  Before starting the process of determining the discharge characteristic, it is necessary to prepare a BMS:
@@ -824,18 +824,14 @@
  In this section:
--* Enable – a flag to enable cell analysis;
--* Discharge step, Ah;
--* Delta voltage – a maximum allowable voltage drop for the cell, V;
--* Logic index, Cell index – a position of the analyzed cell;
--* 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).
++* **Enable **– a flag to enable cell analysis;
++* **Discharge step**, Ah;
++* **Delta voltage** – a maximum allowable voltage drop for the cell, V;
++* **Logic index, Cell index** – a position of the analyzed cell;
++* **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).
--Discharge step should be set equal to
++Discharge step should be set equal to С/21, where C is the cell capacity.
--Discharge step= С/21,
--
--where C is the cell capacity.
--
  The discharge characteristic will be constructed for the given cell (its position is determined by the fields “Logic index” and “Cell index”).
  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.

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