Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14

From 1.4 to 2.1

From version 2.1

edited by Admin
on 2024/12/04 14:54

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To version 46.1

edited by Admin
on 2025/04/09 12:14

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@@ -1,1 +1,1 @@
--drafts.bms-main-3.3\. Settings.WebHome
++Battery management systems.BMS Main 3.3\. Configuration.WebHome

Content

@@ -1,8 +1,14 @@
--=== 3.3.1 Common settings ===
++(% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
++= Configuration =
++(% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
++== Control ==
++
++=== Common settings ===
++
  To change the common BMS settings, select the "Control → Common settings" section:
--[[image:1733322611547-671.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
++[[image:1735054851946-552.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
  In this section:
@@ -10,10 +10,12 @@
  * Cell resistance – nominal (maximum) internal resistance of the cells, Ohm;
  * Relax time (after charging) – a relaxation time after charging, second;
  * Relax time (atfer discharging) – a relaxation time after discharging, second;
--* Number of cycles – a number of charge-discharge cycles;
--* Reset parameters – a command to reset cells state of charge, capacity, and resistance.
++* Reset parameters – a command to reset cells state of charge, capacity, and resistance;
++* Method of calculating the battery voltage:
++** 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 values “Capacity”, “Resistance”, “Cycles” are used to calculate the SOC of cells and the battery.
++The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery.
  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.
@@ -25,7 +25,7 @@
  The “Reset parameters” command is used for starting-up and adjustment of the battery.
--=== 3.3.2 SOC estimation ===
++=== SOC estimation ===
  The BMS Main 3 device calculates the state of charge of the battery (SOC) using two algorithms:
@@ -36,8 +36,9 @@
  To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
--[[image:1733322611549-423.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="148" width="800"]]
++[[image:1735056107942-306.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
++
  The following estimation algorithms supported:
  * Voltage – by open circuit voltage;
@@ -61,7 +61,8 @@
  * Minimal SOC – the battery SOC is assumed to be the minimum SOC among the cells;
  * Average SOC – the battery SOC is taken equal to the arithmetic average of the cell SOC;
--* Min-Max SOC – the battery SOC is taken based on the minimum and maximum SOC of the cells (recommended method).
++* Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if any cell has 100% SOC, b) 0% if any cell has 0% SOC;
++* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC.
  Other parameters:
@@ -75,9 +75,9 @@
  * Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
  * Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
--=== 3.3.3 SOC correction ===
++=== SOC correction ===
--The BMS Main 3 device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see section** **2.3.2).
++The BMS Main 3 device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
@@ -92,22 +92,30 @@
  * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
  * Last correction timestamp – time when last correction was made.
--=== 3.3.4 Resistance estimation ===
++=== Resistance estimation ===
  Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value
--R = (U-U,,ocv,,) / I,,stable,,,
++{{formula fontSize="SMALL" imageType="PNG"}}
++R = \frac{U-U_{ocv}}{I_{stable}}
++{{/formula}}
--where U is the cell voltage measured in the charge or discharge state, V; U,,ocv,, is the cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, – stabilized current through the cell in the state of charge or discharge.
++where U — the cell voltage measured in the charge or discharge state, V; U,,ocv,, — cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, — stabilized current through the cell in the state of charge or discharge.
  The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
--R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
++{{formula fontSize="SMALL"}}
++R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
++{{/formula}}
--(Q,,max,, is the maximum cell capacity),
++provided that
--where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
++{{formula fontSize="SMALL"}}
++| I_{stable2}-I_{stable1} | > 0.2 × Qmax
++{{/formula}}
++where Q,,max,, — the maximum cell capacity,U,,2,, — voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, — the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.
++
  The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I.
  To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
@@ -122,9 +122,9 @@
  * Minimum SOC – minimum cell SOC value for resistance calculation;
  * Maximum SOC – maximum cell SOC value for resistance calculation.
--The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see section 2.3.1). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
++The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance / 2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
--=== 3.3.5 Low SOC (signal) ===
++=== Low SOC (signal) ===
  To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section:
@@ -147,9 +147,12 @@
  * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
++(% class="box infomessage" %)
++(((
  The "Low SOC signal" is indicative and can be output to a discrete output or a power switch.
++)))
--=== 3.3.6 High charging current (signal) ===
++=== High charging current (signal) ===
  To change the parameters of the generation high-current signal, select the "Control → High charging current (signal)" section:
@@ -172,9 +172,12 @@
  * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
++(% class="box infomessage" %)
++(((
  The "High charging current" signal is indicative and can be output to a discrete output or a power switch.
++)))
--=== 3.3.7 Charge map ===
++=== Charge map ===
  The BMS Main 3 device calculates the maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
@@ -182,7 +182,7 @@
  To configure parameters for determining the charge current limit, select the "Control → Charge map" section:
--[[image:1733322637793-171.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="177" width="800"]]
++[[image:1735064362593-844.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
  In this section:
@@ -189,20 +189,20 @@
  * Enable – a flag to start calculation of the charge current limit;
  * Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
--* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current Kcs depending on SOC and battery temperature;
++* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current** Kcs** depending on __maximum cell SOC__ and battery temperature;
  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
--* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on contactor temperature;
++* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
--* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current Kcv depending on maximum cell voltage;
++* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current **Kcv** depending on __the maximum cell U,,ocv,, voltage__ (corrected due to current and cell resistance)
  * Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
--* Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current Kct depending on maximum cell temperature;
++* Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current **Kct** depending on maximum cell temperature;
  * Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
  Value of the charge current limit at given SOC, temperature, contactors temperature, maximum cell voltage and maximum cell temperature is calculated as follows:
--Charging current limit = Maximum charging current × Kcs × Kcc × Kcv × Kct
++**Charge current limit = Maximum charge current × Kcs × Kcc × Kcv × Kct**
--=== 3.3.8 Discharge map ===
++=== Discharge map ===
  The BMS Main 3 device calculates the maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
@@ -210,7 +210,7 @@
  To configure parameters for determining the discharge current limit, select the "Control → Discharge map" section:
--[[image:1733322637795-310.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="800"]]
++[[image:1735064399985-526.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="800"]]
  In this section:
@@ -217,26 +217,26 @@
  * Enable – a flag to start calculation of the discharge current limit;
  * Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
--* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current Kds depending on SOC and temperature;
++* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current **Kds **depending on __minimum cell SOC__ and temperature;
  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
--* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on contactor temperature;
++* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
--* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current Kdv depending on minimum cell voltage;
++* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current **Kdv** depending on __the minimum cell U,,ocv,, voltage__ (corrected due to current and cell resistance)
  * Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
--* Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current Kdt depending on maximum cell temperature;
++* Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current **Kdt** depending on maximum cell temperature;
  * Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
  Value of the discharge current limit at given SOC, temperature, contactors temperature, minimum cell voltage and maximum cell temperature is calculated as follows:
--Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv × Kdt
++**Discharge current limit = Maximum discharge current × Kds × Kdc × Kdv × Kdt**
--=== 3.3.9 Charge map (PEAK & CONTINUOUS) ===
++=== Charge map (PEAK & CONTINUOUS) ===
  The BMS Main 3 has an alternative algorithm for the maximum allowed charging current based on peak and continuous battery operating modes.
  To configure parameters for determining the charge current limit, select the "Control → Charge map (PEAK & CONTINUOUS)" section:
--[[image:1733322637796-187.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
++[[image:1735064434321-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
  In this section:
@@ -257,14 +257,13 @@
  I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,
++=== Discharge map (PEAK & CONTINUOUS) ===
--=== 3.3.10 Discharge map (PEAK & CONTINUOUS) ===
--
  The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
  To configure parameters for determining the discharge current limit, select the "Control → Discharge map (PEAK & CONTINUOUS)" section:
--[[image:1733322735595-661.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
++[[image:1735064454708-345.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
  In this section:
@@ -285,8 +285,120 @@
  I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,
--=== 3.3.11 Charge ===
++=== Main contactor ===
++The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors.
++
++The Main contactor algorithm supports the following modes:
++
++* Always on;
++* Automatic.
++
++In “Always on” mode main contactor closes if all the following is true:
++
++* Other contactors are open;
++* There are no errors from the "Errors 1, 2 ..." bitfileds.
++
++In “Always on” mode main contactor opens if all the following is true:
++
++* Other contactors are open;
++* There is an error from the the "Errors 1, 2 ..." bitfileds.
++
++In “Automatic” mode, the main contactor closes by internal algorithms at the same time with other contactors.
++
++In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
++
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Main **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
++
++To change the parameters of the main contactor, select the "Control → Main contactor" section:
++
++[[image:1735064488658-863.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
++
++In this section:
++
++* Enable – a flag to enable the main contactor control;
++* Algorithm – main contactor control algorithm:
++** Always on – contactor is always closed;
++** Automatic – contactor closes by internal charge and discharge algorithms;
++** On demand – contactor is closed by an external request;
++* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed;
++* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s;
++* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset;
++* Errors 1, 2 to open the main contactor – bitfields to choose the errors which will open the main contactor.
++
++=== Charging status ===
++
++To change the parameters of charging process status, select the "Control → Charging status" section:
++
++[[image:1735064935499-941.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]In this section:
++
++* Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A;
++* Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
++* Voltage to clear the “Ready to charge” – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
++* Voltage to reset the “Ready to charge” – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
++* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0;
++* Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal.
++
++(% class="box infomessage" %)
++(((
++**Note:** The "Allow charging" signal activates under two independent conditions:
++1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and
++2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
++)))
++
++=== Discharging status ===
++
++To change the parameters of discharging process status, select the "Control → Discharging status" section:
++
++[[image:1735064980481-209.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]In this section:
++
++* Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
++* Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
++* Voltage to clear the “Ready to discharge” – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
++* Voltage to reset the “Ready to discharge” – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
++* Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
++
++=== Precharge ===
++
++The BMS Main 3 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 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
++
++TBA
++
++To change the parameters of precharge contactor, select the "Control → Precharge" section:
++
++[[image:1735065073836-743.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]]
++
++* Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
++* Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
++* Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
++* Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
++* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
++* Relaxation between attempts – a duration between precharge attempts, millisecond;
++* Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
++* Precharge resistor resistance, Ohm;
++* Maximum allowable power dissipated in the resistor, W;
++* Delay before setting the "Precharge error" when checking power, millisecond;
++* 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:
++
++* 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";
++* power dissipated on the precharge resistor is above the maximum value during the “Delay before setting the 'Precharge error' when checking power” time.
++
++(% class="box warningmessage" %)
++(((
++Behavior of contactors at “Precharge error” is configured in corresponding contactor settings!
++)))
++
++=== Charge ===
++
  There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.
  The device supports three charge control algorithms:
@@ -295,49 +295,36 @@
  * On charger connected – charging is allowed when there is a signal “Charger connected”;
  * On charge request – charging is allowed when there is a signal “Charge request”.
--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 appears:
++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:
--* Overvoltage;
--* Overcurrent;
--* High temperature (CH);
--* Low temperature (CH);
--* HYG offline (optional);
--* Combilift offline (optional);
--* Spirit offline (optional);
--* Spirit charger error (optional);
--* Short circuit (optional);
--* High contactor temperature (optional);
--* CH contactor cycles error;
--* Precharge error (optional);
--* Critical error
++* Service reset;
++* Power down request;
++* Inhibit charging,
--or one of the signals:
--
--* Service reset
--* Power down request
--* Inhibit charging
--
  both contactors are open (no current flows).
  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 list above), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
++* 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, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
  * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
--* If errors in the list above occur the charging contactor and allow charging contactor open.
++* If errors from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open.
  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 list above), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
++* 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, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
  * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed);
--* If errors in the list above occur the charging contactor and allow charging contactor open.
++* If errors from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open.
--Note – When errors occur in the system, the charging contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++(% 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).
++)))
  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
--[[image:1733322798914-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="327" width="800"]]
++[[image:1735063563460-549.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="262" width="800"]]
  In this section:
@@ -346,22 +346,17 @@
  ** Always on – charging is always allowed;
  ** On charger connected – charging is allowed when there is a signal “Charger connected”;
  ** On charge request – charging is allowed when there is a signal “Charge request”;
--* Current corresponding to charging – a current level to generate the "Charging current present" signal, A;
--* Current corresponding to no charging – a current level to clear the "Charging current present" signal, A;
++* Allow charging only when the "Ready to charge" signal is set – charging contactor will open if "Ready to charge" signal is cleared;
  * Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond;
  * Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond;
++* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the charge contactor (see [[Precharge>>path:#HPrecharge]]);
++* Errors 1, 2 to open the charging contactor – bitfields to choose the errors which will open the charging contactor;
  * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
--* Custom delay: <error> – specific error delay, millisecond;
++* Custom delay: <error> – delay for specific error, millisecond;
  * Switch off the charging contactor on errors without delay – a flag to protectively open the charging contactor without a delay. In the opposite case, when an error is detected, the charging contactor opens always with the delay “Delay before stopping charging”;
--* Control the precharging contactor – a flag that allows control of the precharging contactor;
--* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
--* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
--* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0.
--Note – The allow charging contactor closes under two independent conditions: 1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
++=== Discharge ===
--=== 3.3.12 Discharge ===
--
  The device controls the discharging contactor to connect battery to the load.
  The device supports three algorithms to control battery discharging:
@@ -370,26 +370,8 @@
  * On charger disconnected – load is connected when there is no signal “Charger connected”;
  * On discharge request – load is connected when there is signal “Discharge request”.
--When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors appears:
++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:
--* Undervoltage;
--* Overvoltage (optional);
--* Overcurrent;
--* High temperature (DCH);
--* Low temperature (DCH) (optional);
--* HYG offline (optional);
--* Combilift offline (optional);
--* Spirit offline (optional);
--* Spirit charger error (optional);
--* Short circuit (optional);
--* High contactor temperature (optional);
--* Unallowable charging;
--* DCH contactor cycles error;
--* Precharge error (optional);
--* Critical error
--
--or one of the signals:
--
  * Service reset
  * Power down request
  * Inhibit discharging
@@ -398,21 +398,22 @@
  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 list above), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Charger connected” appears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
++* 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.
  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 list above), then through the delay time T,,on,, the discharging contactor closes;
--* If the signal “Discharge request” disappears or errors occur (see the list above), then after the delay time T,,off,, the discharging contactor opens.
++* 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 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.
--Note – In case of errors in the system operation, the opening of the discharging contactor is performed either immediately or with a delay T,,off,, (depends on the settings described below).
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
--The device supports controlling the precharging contactor. The duration of switching on the precharging contactor before closing the discharging (load) contactor is adjusted.
--
  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
--[[image:1733323750262-841.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="360" width="800"]]
++[[image:1735064038329-836.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="273" width="800"]]
  In this section:
@@ -421,32 +421,53 @@
  ** Always on – load is always connected;
  ** On charger disconnected – load is connected when there is no signal “Charger connected”;
  ** On discharge request – load is connected when there is signal “Discharge request”;
--* Current corresponding to discharging – a current level to generate the "Discharging current present" signal, А;
--* Current indicating no discharging – a current level to clear the "Discharging current present" signal, А;
++* Allow charging only when the "Ready to discharge" signal is set – discharging contactor will open if "Ready to discharge" signal is cleared;
  * Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond;
  * Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond;
++* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the discharge contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]);
++* Errors 1, 2 to open the discharging contactor – bitfields to choose the errors which will open the discharging contactor;
  * Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
  * Custom delay: <error> – specific error delay, millisecond;
  * Switch off the discharging contactor on errors without delay – a flag to protectively open the discharging contactor without a delay. In the opposite case, when an error is detected, the discharging contactor opens always with the delay “Delay before stopping discharging”.
--* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
--* Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
--* Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
--* Voltage to clear the “Ready to discharge” – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
--* Voltage to reset the “Ready to discharge” – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
--=== 3.3.13 Charge/Discharge ===
++=== Charge/Discharge ===
--The BMS Main 3 device can control the charging/discharging contactor, which combines algorithms of charging and discharging contactor. It behaves as a charging contactor when “Charge request” or “Charger connected” is set, otherwise – as a discharging contactor.
++The BMS Main 3 device can control the charge/discharge contactor, which combines algorithms of charging and discharging contactor.
++Charge/Discharge contactor has three algorithms of operation:
++
++* Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
++* Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
++* Independent (on Charge request or Discharge request) - Charge/Discharge contactor is based on its own controller that listen to Charge and Discharge requests and closes if one of these signals occurs.
++
++TBA
++
++(% class="box infomessage" %)
++(((
++**Note: **when errors occur in the system, the **Charge/Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
++)))
++
  The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
--[[image:1733322827919-875.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="85" width="800"]]
++[[image:1735122153011-166.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="800"]]
  In this section:
  * Enable – a flag to enable the charge/discharge controller.
++* Algorithm:
++** Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
++** Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
++** Independent (on Charge request or Discharge request);
++* Delay before starting charging or discharging, millisecond;
++* Delay before stopping charging or discharging, millisecond;
++* Control the precharging contactor – a flag that enables control of precharging contactor while closing the charge/discharge contactor;
++* Emulate the "Charging" and "Discharging" signals – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor;
++* Errors 1, 2 to prevent CHARGING through charging/discharging contactor, Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor – bitfields to choose the errors which will open the charging/discharging contactor. This bitfields are combined by bitwise OR and intended to separate settings for charging and discharging processes;
++* Errors 1, 2 which affect the contactor only if battery CHARGING is detected – a bitfield to choose the errors which will trigger only if charging current is present. This bitfield is combined with "Errors 1, 2 to prevent CHARGING through charging/discharging contactor" by bitwise AND;
++* Errors 1, 2 which affect the contactor only if battery DISCHARGING is detected – a bitfield to choose the errors which will trigger only if discharging current is present. This bitfield is combined with "Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor" by bitwise AND;
++* Switch off the charging/discharging contactor on errors without delay – a flag to protectively open the charging/discharging contactor without a delay. In the opposite case, when an error is detected, the charging/discharging contactor opens always with the delay “Delay before stopping discharging”.
--=== 3.3.14 Discharge (AUX) ===
++=== Discharge (AUX) ===
  The BMS Main 3 device can control the power supply of external equipment using the auxiliary (AUX) discharging contactor. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
@@ -456,11 +456,11 @@
  * the battery has low SOC;
  * the battery voltage is out of range;
--* the battery system errors are detected.
++* the errors are detected (configured in the "Errors 1, 2 ..." bitfields).
  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
--[[image:1733322827920-878.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
++[[image:1735066190419-838.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
  In this section:
@@ -468,68 +468,16 @@
  * Switch off the discharging (AUX) contactor if the SOC is too low;
  * Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging contactor opens, %;
  * Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging contactor re-closes, %;
++* Switch off the discharging (AUX) contactor if the cell voltage is out of the range;
++* Minimum cell voltage, V;
++* Maximum cell voltage, V;
  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
--* Minimum voltage – minimum battery voltage, V;
--* Maximum voltage – maximum battery voltage, V;
--* Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error.
++* Minimum battery voltage, V;
++* Maximum battery voltage, V;
++* Errors 1, 2 to open the auxiliary discharging contactor – bitfields to choose the errors which will open the auxiliary discharging contactor.
--=== 3.3.15 Main contactor ===
++=== Cell balancing ===
--The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors.
--
--The Main contactor algorithm supports the following modes:
--
--* Always on;
--* Automatic;
--* On demand.
--
--In “Always on” mode main contactor closes if all the following is true:
--
--* Charging contactor is open;
--* Discharging contactor is open;
--* There are no errors from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (CH);
--** High temperature (DCH);
--** Unallowable charging;
--** Critical error.
--
--In “Always on” mode main contactor opens if all the following is true:
--
--* Charging contactor is open;
--* Discharging contactor is open;
--* There is an error from the list below:
--** Overcurrent;
--** Undervoltage;
--** Overvoltage;
--** High temperature (CH);
--** High temperature (DCH);
--** Unallowable charging;
--** Critical error.
--
--In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors.
--
--In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
--
--To change the parameters of the main contactor, select the "Control → Main contactor" section:
--
--[[image:1733322872744-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
--
--In this section:
--
--* Enable – a flag to enable the main contactor control;
--* Algorithm – main contactor control algorithm:
--** Always on – contactor is always closed;
--** Automatic – contactor closes by internal charge and discharge algorithms;
--** On demand – contactor is closed by an external request;
--* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed;
--* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s;
--* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset.
--
--=== 3.3.16 Cell balancing ===
--
  Balancing makes the voltage of all cells equal to the minimum cell voltage.
  The following balancing rules are supported:
@@ -541,20 +541,25 @@
  A balancing resistor is connected to the cell if the following conditions are simultaneously met:
  * the voltage on the cell is higher than the balancing start voltage;
--* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold.
++* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold;
  A balancing resistor is disconnected from the cell if any of the following conditions are met:
--* the voltage on the cell is less than the balancing start voltage;
++* the voltage on the cell is less than the balancing stop voltage;
  * the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
++(% class="box infomessage" %)
++(((
  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 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 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:
--[[image:1733322883460-118.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
++[[image:1735065702806-422.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
  In this section:
@@ -563,15 +563,17 @@
  ** Balance on charge – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states);
  ** Balance on charge or relaxed - balancing is performed while and after the charging and in the relaxed state (in “Charge ON”, “Charge OFF”, “Relaxed (after charging)” and “Relaxed (after discharging)” states);
  ** Balance always – balancing is always performed regardless the battery state;
--
--[[image:1733322883462-975.png]]
--
++* Balancing condition:
++** Automatic – balancing will be performed automatically if needed conditions are met;
++** On balancing request – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value;
  * Minimum cell voltage to start balancing, V;
  * Voltage deviation to start balancing;
  * Voltage deviation to stop balancing;
++* Voltage for 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.
--=== 3.3.17 Series balancing ===
++=== Series balancing ===
  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.
@@ -598,7 +598,7 @@
  * 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
--=== 3.3.18 Power down ===
++=== Power down ===
  The BMS Main 3 device can shut down itself if the battery voltage is low or the battery is idle for a long time.
@@ -621,7 +621,7 @@
  * 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.
--=== 3.3.19 Heater ===
++=== Heater ===
  To change the parameters of the heater control algorithm, select the "Control → Heater" section:
@@ -646,9 +646,12 @@
  * 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.
--If there is the "Heater" signal, the heater contactor closes and/or a signal is output to the corresponding digital output.
++(% class="box infomessage" %)
++(((
++If there is the "Heater" signal, the heater contactor closes and/or a signal is set to the corresponding digital output.
++)))
--=== 3.3.20 Cooler ===
++=== Cooler ===
  To change the parameters of the cooler control algorithm, select the "Control → Cooler" section:
@@ -673,18 +673,18 @@
  * 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.
--If there is the "Cooler" signal, the cooler contactor closes and/or a signal is output to the corresponding digital output.
++(% class="box infomessage" %)
++(((
++If there is the "Cooler" signal, the cooler contactor closes and/or a signal is set to the corresponding digital output.
++)))
++=== High voltage ===
--1.
--11.
--111. High voltage
--
  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:
--[[image:1733322914683-203.png]]
++[[image:1733322914683-203.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="87" width="800"]]
  In this section:
@@ -694,13 +694,13 @@
  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.
--**If there is the “High voltage fault”, the “Critical error” is generated and all contactors open.**
++(% class="box warningmessage" %)
++(((
++If there is the “High voltage fault”, **the “Critical error” is generated.**
++)))
++=== Cell analysis ===
--1.
--11.
--111. Cell analysis
--
  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.
@@ -712,7 +712,7 @@
  To configure parameters for determining the discharge characteristic of the battery, select the "Control → Cell analysis" section:
--[[image:1733322914685-558.png]]
++[[image:1733322914685-558.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]]
  In this section:

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Changes for page 3.3 Control

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