Changes for page 3.3 Control

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

From 77.1 to 76.19 From 87.2 to 87.1

From version 87.1

edited by Admin
on 2026/04/02 10:12

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To version 77.1

edited by Admin
on 2026/03/31 14:18

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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 calculated as overall string current divided by 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 estimated as a fraction of overall current accordingly to the 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 by using following algorithms:
++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 **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
@@ -94,11 +94,11 @@
  === SOH estimation ===
--The BMS Main 3 / BMS Main 2R device calculates the state of health of the battery (SOH) using two algorithms:
++The BMS Main 3 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.
--In** "By total charge–"** mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed data about cell health depending of amount of discharge rate to configure the linear function.
++In** "By total charge–"** mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed data about cell health depending of amount of discharge rate to configure the linear function.
  To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
@@ -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 check the preacharge process by monitoring **the current and voltage difference** before and after contactors.
++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 2R can check the preacharge process **only by monitoring the current**.
++BMS Main 2R can detect errors while pre-charging the load capacity **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” generates if any of the following is true:
++“Precharge error” generation conditions 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";
@@ -546,7 +546,7 @@
  Charge/Discharge contactor has three algorithms of operation:
--On **Dependent (on Charging and Discharging signals)** algorithm the charge/discharge contactor depends on Charge and Discharge controllers and behaves:
++On **Dependent (on Charging and Discharging signals)** algorithm the charge/discharge contactor depends on Charge and Discharge algorithms and their signals and behaves
  * as Charging contactor if "Charging" signal is set;
  * as Discharging contactor in other cases.
@@ -560,8 +560,9 @@
  the charging/discharging contactor opens.
--On **Independent (on Charge request or Discharge request)** algorithm charge/discharge contactor is based on its own controller and performs as follows:
++**Independent (on Charge request or Discharge request)** - charge/discharge contactor is based on its own controller and performs as follows:
++
  * 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;
  * 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.
@@ -626,9 +626,9 @@
  The following **balancing rules** are supported:
--* **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.
++* 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).
  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 balancing **of the cell, if its voltage is higher than estimated value.
++BMS Main 3 / BMS Main 2R can force a cell balancing, if its voltage is higher than estimated value.
  To change the cell balancing parameters, select the "Control → Cell balancing" section:
@@ -666,14 +666,13 @@
  * **Minimum cell voltage to start balancing**, V;
  * **Voltage deviation to start balancing**;
  * **Voltage deviation to stop balancing**;
--* **Voltage to start forced balancing** – if cell voltage is above this value, it will start discharging through balancing resistor;
--* **Voltage to stop forced balancing** – if cell voltage is below this value, it will stop discharging through balancing resistor;
++* **Voltage to start  forced balancing** – if cell voltage is above this value, it will start discharging through balancing resistor;
  * **Maximum allowable temperature of BMS Logic devices**, ºC;
  * **Command to discharge all cells** – a flag to force the balancing of all cells.
  === Series balancing ===
--The BMS Main 3 / BMS Main 2R device supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used. A series of cells must be equivalent: they must have the same number of cells and the same capacity.
++The BMS Main 3 device supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used. A series of cells must be equivalent: they must have the same number of cells and the same capacity.
  Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 3 provides two signals to power switches: “Balancing series 1” and “Balancing series 2”, as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. The “Balancing series 1” and “Balancing series 2” signals are used to connect high-power balancing resistors in parallel with cell series 1 and 2.
@@ -690,17 +690,17 @@
  In this section:
--* **Enable **– a flag to enable series balancing;
--* **Number of Logics in a series**;
--* **Minimum series voltage to start balancing**, V;
--* **Balancing threshold**, V;
--* **Coulomb threshold** – the difference of the charges Qthr, given by a series of cells, above which balancing to be started, Ah;
--* **Period **– a period to reset of charge counters for each series (to avoid accumulation of error), second;
--* **Do not sum series voltages** – a flag to disable the summing of series voltages.
++* Enable – a flag to enable series balancing;
++* Number of Logics in a series;
++* Minimum series voltage to start balancing, V;
++* Balancing threshold, V;
++* Coulomb threshold – the difference of the charges Qthr, given by a series of cells, above which balancing to be started, Ah;
++* Period – a period to reset of charge counters for each series (to avoid accumulation of error), second;
++* Do not sum series voltages – a flag to disable the summing of series voltages.3
  === Power down ===
--The BMS Main 3 / BMS Main 2R device can shut down itself if the battery voltage is low or the battery is idle for a long time.
++The BMS Main 3 device can shut down itself if the battery voltage is low or the battery is idle for a long time.
  Shutting down the battery system is performed according to the following conditions:
@@ -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 for a long time **in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” state.
++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.
  To change the parameters of the power down control, select the "Control → Power down" section:
@@ -715,11 +715,11 @@
  In this section:
--* **Minimum voltage to power down** – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
--* **Idle time to power down** – a time of battery inactivity after which the battery is shut down, minute;
--* **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.
--* **Power down if KEYRUN and CHARGE_ON are cleared** – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared;
--* **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.
++* Minimum voltage to power down – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
++* Idle time to power down – a time of battery inactivity after which the battery is shut down, minute;
++* 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.
++* Power down if KEYRUN and CHARGE_ON are cleared – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared;
++* 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.
  === Heater ===
@@ -729,24 +729,22 @@
  In this section:
--* **Enable **– a flag to enable the heater control;
--* **Minimum cell temperature**, °C;
--* **Tolerant cell temperature**, °C;
--* **Delay before starting the heater**, millisecond;
--* **Delay before stopping the heater**, millisecond;
--* **Errors 1, 2 to open the heater** – bitfields to choose the errors which will open the heater.
++* Enable – a flag to enable the heater control;
++* Minimum cell temperature, °C;
++* Tolerant cell temperature, °C;
++* Delay before starting the heater, millisecond;
++* Delay before stopping the heater, millisecond;
++* Switch off the heater on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
  As a result of operating the heating algorithm, the “Heater” signal is generated.
  Conditions for signal generation:
--* 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;
--* there are no errors from "Errors 1, 2..." bitfields.
++* 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.
  Conditions for clearing the signal:
--* 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;
--* there is an error from "Errors 1, 2..." bitfields.
++* 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.
  (% class="box infomessage" %)
  (((
@@ -761,24 +761,22 @@
  In this section:
--* **Enable** – a flag to enable the cooler control;
--* **Maximum cell temperature**, °C;
--* **Tolerant cell temperature**, °C;
--* **Delay before starting the cooler**, millisecond;
--* **Delay before stopping the cooler**, millisecond;
--* **Errors 1, 2 to open the cooler **– bitfields to choose the errors which will open the cooler.
++* Enable – a flag to enable the cooler control;
++* Maximum cell temperature, °C;
++* Tolerant cell temperature, °C;
++* Delay before starting the cooler, millisecond;
++* Delay before stopping the cooler, millisecond;
++* Switch off the cooler contactor on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
  As a result of operating the cooling algorithm, the "Cooler" signal is generated.
  Conditions for signal generation:
--* 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;
--* there are no errors from "Errors 1, 2..." bitfields.
++* 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.
  Conditions for clearing the signal:
--* 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;
--* there is an error from "Errors 1, 2..." bitfields.
++* 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.
  (% class="box infomessage" %)
  (((
@@ -787,11 +787,6 @@
  === 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.
  To change the parameters of high voltage fault, select the "Control → High voltage" section:
@@ -800,9 +800,9 @@
  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.
@@ -815,7 +815,7 @@
  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 / BMS Main 2R device can automatically determine the battery discharge characteristic.
++The BMS Main 3 device can automatically determine the battery discharge characteristic.
  Before starting the process of determining the discharge characteristic, it is necessary to prepare a BMS:
@@ -828,14 +828,18 @@
  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 С/21, where C is the cell capacity.
++Discharge step should be set equal to
++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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